JPS60186536A - Vinyl chloride resin molded article and method for molding thereof - Google Patents

Abstract

PURPOSE:To obtain a molded article suitable as rainwater guttering, etc., having small linear expansion coefficient, high heat deformation resistance, improved moldability and physical properties such as impact resistance, and excellent surface appearance, etc., by compounding a vinyl chloride resin with short glass fiber, mica, and a modifying agent such as chlorinated polyethylene. CONSTITUTION:The objective molded article can be produced by dispersing and compounding (A) 100pts.(wt.) of a vinyl chloride resin with (B) 5-30pts.of short glass fibers of 0.05-3mm. length, (C) 5-30pts. of mica, and (D) 5-20pts. of a modifying agent selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate- butadiene-styrene copolymer. The composition may be incorporated further with 1-5pts. of a processing assistant such as methyl methacrylate-acrylonitrile- styrene copolymer and 10-50pts. of calcium carbonate. After kneading the composition, the glass fibers are separated into single fibers and broken to shorter length by applying shearing force, and the composition dispersed with the broken glass fibers is extruded to obtain the objective article.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention is suitable for molded products with a small coefficient of linear expansion and excellent physical properties and appearance, particularly thin-walled molded products such as rain gutters, decking materials, and window frames. This invention relates to a vinyl chloride resin molded product and a molding method thereof.

(Prior art) In recent years, molded products made of vinyl chloride resin, such as hard vinyl chloride rain gutters, have come into widespread use.
Rain gutters made of hard vinyl chloride have a higher coefficient of linear expansion than metal rain gutters, and during use, changes in temperature can cause changes in the longitudinal length, causing deformation or damage at connections or fasteners. In addition, the parts exposed directly to the sun's rays thermally expanded, causing them to bend and become wavy.

Conventionally, as described in Japanese Patent Publication No. 53-21891, 100 parts by weight of a vinyl resin having a viscosity index of 50 to 180 and 10 to 10 parts of an inorganic filler whose individual particles have an average diameter of 0.05 to 50 μm are used. 60 parts by weight, 1.5 to 5 parts by weight of a lubricant, and 5 to 40 parts by weight of glass fibers with a length of 4 to 6 openings. Also, the adhesion between the mixed glass fiber and the vinyl resin was poor, and large voids were created around the glass fiber, which caused the vinyl resin to be mixed evenly before the glass fiber was added. Compared to the molded product, the physical properties such as impact resistance are significantly reduced, and the moldability is also significantly worse, the surface condition of the molded product is not smooth, and not only does it have a poor appearance, but also However, it had the disadvantage of whitening (chalking) within a short period of time when used outdoors.

Also, as described in Japanese Patent Application Laid-Open No. 56-34741, (A
> Vinyl chloride resin 95-70% by weight, (B) mica 5-3
A blend of a copolymer resin mainly composed of methyl methallylate in an amount of 0% by weight or more than 1% by weight based on (A) + (B) has been proposed, but the combination of mixed mica and vinyl chloride resin has been proposed. There were drawbacks such as poor adhesion and poor physical properties such as ib impact resistance of the molded product.

(Purpose of the Invention) In view of the facts on paper, as a result of careful consideration, the inventor has determined that:
It was discovered that the shortcomings of the conventional paper-based method could be overcome by minimizing the length of the short glass fibers and adding a modifier that improves the adhesion between the short glass fibers, mica, and resin. The present invention has been made, and the present invention provides a molded product that has a small coefficient of linear expansion, is resistant to thermal deformation, has excellent physical properties such as impact resistance, has excellent moldability, and has a good surface condition. The object of the present invention is to provide a vinyl chloride resin molded product particularly suitable for thin-walled molded products such as rain gutters, decking materials, window frames, etc., and a method for molding the same.

(Summary of the Invention) The summary of the present invention is as follows: 1. In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 0.05 to 311+1, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-1Ill:acid vinyl copolymer, Acrylic nitrile foam copolymer and methyl methacrylate-butadiene-
At least one selected from +1j of styrene copolymers
A vinyl chloride resin molded article in which 5 to 20 parts by weight of a seed modifier is dispersed (hereinafter referred to as "molded article 1 of the present invention"),
2. Length 0.05 in vinyl chloride resin 100 heavy foot part
5 to 30 parts by weight of short glass fibers of 3 to 3 fins, and 5 parts of mica.
30 parts by weight, and at least one selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer.
5 to 20 parts by weight of a seed modifier and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate are dispersed. (hereinafter referred to as "molded product 2 of the present invention"), 3. In 100 parts by weight of vinyl chloride resin, length 0.05 to 3
5 to 30 parts of short glass fiber and 5 to 3 parts of mica
0 parts by weight, and at least one member selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylny-1-lyl-butadiene-styrene-1'=ffi combination, and methyl methacrylate-butadiene-styrene copolymer. 5 to 20 parts by weight of a modifier, 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate, and 1 part by weight of calcium carbonate.
0 to 50 parts by weight of a vinyl chloride resin molded product (referred to as "molded product 3 of the present invention" under X22); 4. 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers with a length of 2 to 12111 bound by a sizing agent, 5 to 30 parts by weight of mica, chlorinated polyethylene, and ethylene-vinyl acetate copolymer. , acrylonitrile
5 to 20 parts of at least one modifier selected from butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer are mixed in a mixer, and the mixture is mixed in a kneader. The short glass fibers are loosened and cut into single fibers by shearing force, dispersed in a resin as short glass fibers having a length of 0.05 to 31111 mm, and then extruded from an extruder to form them. 5. A method for molding a vinyl chloride resin molded product (hereinafter referred to as "molding method 1 of the present invention");
100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 2 to 12 baskets bundled with a sizing agent, 5 to 30 m ffi parts of mica, chlorinated polyethylene, ethylene-vinyl acetate, etc. polymer, 5 to 20 parts by weight of at least one modifier selected from acrylonitrile-butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer, and methyl methacrylate-I. - Acrylonitrile-styrene copolymer and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate are mixed in a mixer, the mixture is kneaded in a kneader, and sheared. Using force, the short glass fibers are loosened and cut into single fibers, and the short glass fibers having a length of 0.05 to 3 mm are dispersed in a resin, which is then extruded from an extruder to form a molded product. 6. A method for molding a vinyl chloride resin molded article (hereinafter referred to as "molding method 2 of the present invention"); 100 parts of vinyl chloride resin, 5 to 30 parts by weight of short glass wires R having a length of 2 to 12 times bundled with a sizing agent, 5 to 30 parts by weight of mica, chlorinated polyethylene,
5 to 20 parts by weight of at least one modifier selected from ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer; A small amount selected from acrylate-acrylonitrile-styrene copolymer and methyl methacrylate
1 to 5 parts of processing aids and 50 parts by weight of calcium carbonate are mixed in a mixer, this mixture is kneaded in a kneader, and the short glass fibers are made into single fibers by shearing force. A vinyl chloride resin characterized by loosening and cutting into fibers, forming short glass fibers with lengths of o, o5 to 3, and dispersing them in a resin, which are then extruded from an extruder to form a molded article. Molding method for molded products. (hereinafter referred to as "molding method 3 of the present invention"), 7. 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 0.05 to 300 g bound with a sizing agent, 5 to 30 parts by weight of mica, polyethylene chloride, ethylene-acetic acid. 5 to 20 parts by weight of at least one modifier selected from vinyl copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer are mixed in a mixer. The mixture is kneaded in a kneading machine, and the short glass fibers are combed into single fibers and dispersed in a resin by shearing force, and then this is extruded from an extruder to form a molded product. 8. Molding method for vinyl resin molded product (hereinafter referred to as "molding method 4 of the present invention"); 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers of length 0.05 to 3 silk bound with a sizing agent, 5 to 30 parts by weight of mica, and chlorinated polyethylene, ethylene-Il. ! i! :@
5 to 20 parts by weight of at least one modifier selected from vinyl copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer, and methyl methacrylate-acrylic 1 to 5 parts by weight of at least one processing aid selected from nitrile-styrene copolymer and methyl methacrylate are mixed in a mixer, the mixture is kneaded in a kneader, and the mixture is mixed by shearing force. A method for molding a vinyl chloride resin molded article (hereinafter referred to as the "molding method of the present invention"), which comprises loosening the short glass fibers into single fibers and dispersing them in a resin, and then extruding them from an extruder to mold a molded article. 5”), and 9. 100 parts by weight of vinyl chloride resin with a length of 0.05 to 3I bundled with a sizing agent
5 to 30 parts by weight of 1 m short glass fiber, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-
At least lfi selected from styrene copolymers
[i] 5 to 20 parts by weight of the modifier, 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate, and carbonic acid. Calcium lO~5
0 parts by weight are mixed in a mixer, this mixture is kneaded in a kneader, and the short glass fibers are broken into single fibers and dispersed in the resin by shearing force, and then this is extruded from an extruder. The present invention relates to a method for molding a vinyl chloride resin molded product (hereinafter referred to as "molding method 6 of the present invention"), which is characterized by molding a molded product. (Left below) (Structure of the Invention) Examples of the vinyl chloride resin used in the molded products 1 to 3 of the present invention and the molding methods 1 to 6 of the present invention include polyvinyl chloride (P, VC), polyvinylidene chloride, and Chlorinated polyvinyl chloride (chlorinated PvC) etc. are preferably used, among others,
Polyvinyl chloride (PVC) is particularly preferably used.

Glass short Ii used in the molded products 1 to 3 of the present invention and the molding methods 1 to 6 of the present invention! I! As the fiber, for example, glass chops in which the strands are cut into short lengths, or pile-shaped ones in which the strands are cut into short lengths, etc. are preferably used, and among them, glass chops in which the strands are cut into short lengths are particularly preferably used, and epoxy silane Those that have been surface-treated with a compres- sion treatment agent such as the following are preferably used.

The mica ζ used in the molded products 1 to 3 of the present invention and the molding methods 1 to 6 of the present invention preferably has a diameter of about 20 μm, and the surface is coated with a coupling treatment agent such as epoxy silane. Those that have been surface-treated are preferably used.

The modifier used in molded products 1 to 3 of the present invention and molding methods 1 to 6 of the present invention is added to the system to improve the adhesion between the short glass fibers and mica and the vinyl chloride resin. Chlorinated polyethylene (chlorinated 1) E)
, ethylene-vinyl acetate copolymer, acrylonitrile-
Butadiene-styrene copolymer (AI33) and methyl methacrylate-butadiene-styrene copolymer (M
A small number (at least one type) selected from among BS) are used.

Molded products of the present invention 2 and 3 and molding method of the present invention 2゜3.5.6
As the processing aid, at least one selected from methyl methacrylate-acrylonitrile-styrene copolymer (MAS) and methyl methacrylate (MMA) is used.

As the calcium carbonate used in the composition 3 of the present invention and the molding methods 3 and 6 of the present invention, for example, precipitated calcium carbonate, slight lucium carbonate, ultrafine calcium carbonate, etc. are preferably used, and especially ultrafine calcium carbonate is preferably used. Calcium carbonate is particularly preferably used, and those whose surfaces have been surface-treated with fatty acid ester or the like are preferably used.

In the molded products 1 to 3 of the present invention and the molding methods 1 to 6 of the present invention, stabilizers and pigments may be used in combination with the above-mentioned ones as necessary.

In the molded products 1 to 3 of the present invention and the molding methods 1 to 6 of the present invention, by adding 5 to 30 parts by weight of short glass fibers to 100 parts by weight of the vinyl chloride resin, moldability is improved. and fJi: Reduce the linear expansion coefficient of the molded product, increase its rigidity, and make it less likely to be thermally deformed due to temperature changes without degrading the impact resistance or the like. If short glass fibers are not added at all or if only a small amount of less than 5 parts by weight is added, a sufficient effect cannot be expected, and if a large amount exceeding 30 parts by weight is added. teeth,
The moldability deteriorates, the appearance of the molded product is not smooth, and the impact resistance and weather resistance deteriorate.

In the molded products 1 to 3 of the present invention and the molding methods 1 to 6 of the present invention, mica, along with other components, is added to the vinyl chloride resin 10
By adding 5 to 30 parts by weight relative to 0 parts by weight, the coefficient of linear expansion of the molded product is reduced without deteriorating its moldability and impact resistance, making it less likely to be thermally deformed due to temperature changes.

Either no mica is added or the amount of mica added is
If a small amount of less than 5 parts by weight is added to 100 parts by weight of vinyl chloride resin, a sufficient effect cannot be expected, and if a large amount of more than 30 parts by weight is added, molding The appearance of the molded product is not smooth, and the resistance to i! j The impact becomes worse.

In the molded products 1 to 3 of the present invention and the molding methods 1 to 6 of the present invention, the modifier is added to 100 parts by weight of the vinyl chloride resin in an amount of 5 to 20 weight BIS, along with other components. To improve physical properties such as impact resistance and rigidity of molded products without increasing expansion coefficient. If the modifier is not added at all or if it is added in a small amount (less than 5 parts by weight), a sufficient effect cannot be expected, and if it is added in a large amount exceeding 2 parts by weight, the coefficient of linear expansion will be large. turn into.

Molded products of the present invention 2 and 3 and molding method of the present invention 2゜3.5.6
In this, the processing aid is added together with other components in an amount of 1 to 5 parts by weight per 100 ffi of the vinyl chloride resin, so that the processing aid can be added together with the modifier without increasing the coefficient of linear expansion. Further improve the moldability of molded products. If the processing aid is not added at all or if it is added in a small amount (less than 1 part by weight), a sufficient effect cannot be expected, and if it is added in a large amount (more than 5 parts by weight), the linear expansion of the molded product may occur. The ratio becomes large.

In the molded article 3 of the present invention and the molding method 3.6 of the present invention,
By adding 10 to 50 parts by weight of calcium carbonate to 100 parts by weight of vinyl chloride resin together with other ingredients, the rigidity of the molded product can be improved without deteriorating the weather resistance and impact resistance. Prevents thermal deformation due to temperature changes. If calcium carbonate is not added at all or if it is added in a small amount of less than 10 parts by weight per 100 parts by weight of vinyl chloride resin, sufficient effects cannot be expected, and if calcium carbonate is added in excess of 50 parts by weight. If a large amount is added, the resistance f! j Impact resistance and weather resistance deteriorate.

In molding methods 1 to 3 of the present invention, vinyl chloride resin 1
00 parts by weight, 5 to 300 parts of short glass fibers having a length of 2 to 12 i+m, which have been bundled with a binding agent, are mixed in a mixer. Preferably, the mixing is carried out under heat and at high speed. This mixture was mixed in rolls, and while being bundled in a Toki machine, the short glass fibers with a length of 2 to 12 mWl, which had been bundled with a binding agent, were cut into single fibers using the shearing force. The fibers are made into short glass fibers with a diameter of 0.05 to 3 mm and uniformly dispersed in the resin. The mixing conditions for the L+-L kneader include a roll temperature of 150 to 180°C;
Preferably, the roll spacing is 1 to 211 IN and the kneading time is 3 to 8 minutes. A sheet-like material is extruded from a roll kneader and the sheet-like material is pulverized. The crushed pieces are further extruded to form a molded product. As for the extrusion conditions, it is preferable to select the extruder model so as to apply shearing force and to use a breaker with a small hole diameter so that the resin pressure is high, and the resin pressure range is 130 to 170. kg
/ca and resin temperature of 180 to 185°C are preferred.

As the kneading machine, in addition to the roll kneading machine 1 described above, an extruder with a large kneading force for producing pellets or the like may be used.

In molding methods 4 to 6 of the present invention, vinyl chloride resin 1
For 00 market weight, 0.05 is concentrated by a sizing agent.
The short glass fibers of 3 to 3III11 are mixed in a mixer. Preferably, the mixing is carried out under heat and at high speed. This mixture is passed through an extruder kneader for pellet production into a length of 0.05 to 31 lbs.
111 short glass fibers! The fibers are loosened and dispersed uniformly in the resin, which is then turned into pellets. As for the extrusion conditions of the extruder kneader for pellet production, select the extruder model so that it applies as much shear force as possible, and
It is also preferable to use a hole with a small diameter so that the resin pressure shows a high value, and the resin pressure temperature is 180 to 185℃.
is preferred. The pellets are extruded using an extruder to produce a molded product.

The extrusion conditions are the same as in the previous case. As the kneader, in addition to the above-mentioned extruder kneader, a roll kneader or the like may be used. In this case, pulverization is performed instead of pelletizing. Incidentally, the berezoization and pulverization described in O1J are not necessarily essential, and for example, the mixture may be directly introduced from the kneader to the extruder for molding. (The following is a blank space) (Rino Fruit of the Invention) The molded product 1 of the present invention contains 5 to 30 parts by weight of short glass fibers having a length of 0.05 to 30 mm and 5 to 30 parts by weight of mica in 100 parts by weight of a vinyl chloride resin. parts by weight, chlorinated polyethylene, ethylene-vinyl acetate co-merge, acrylonitrile-
5 to 20 parts by weight of at least one modifier selected from butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer are dispersed in the molded article. , The linear expansion coefficient is small, so thermal deformation due to temperature changes does not occur.
The surface condition of the molded product is good.

In addition, the molded article 2 of the present invention contains 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 0.05 to 3 ridges, 5 to 30 parts by weight of mica, chlorinated polyethylene, and ethylene. - 5 to 20 parts by weight of at least one modifier selected from vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer, and methyl methacrylate -7 Since it is made by dispersing 1 to 5 parts by weight of at least one processing aid selected from crylonitrile-styrene co-polymer and methyl methacrylate, the coefficient of linear expansion of the molded product is low. It is small and resistant to thermal deformation due to temperature changes, has excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability (the surface condition of the molded product is smooth and uniform, and it has a good appearance).

In addition, the molded product 3 of the present invention contains 5 to 30 short glass fibers with a length of 0.05 to 31 in the 100-layer polyvinyl chloride resin.
parts by weight, 5 to 30 parts of mica, selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-citadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. 5 to 20 parts by weight of one modifier and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate. and 10 to 50 parts by weight of calcium carbonate are dispersed in -C, so the coefficient of linear expansion of the molded product is smaller and thermal deformation due to temperature changes is more likely to occur. It has excellent physical properties, extremely good moldability, and the molded product has a smooth surface and good appearance.

In addition, in the molding method 1 of the present invention, 100 parts by weight of a vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 2 to 12 fins bound by a sizing agent, 5 to 30 parts by weight of mica, and chlorine. 5 to 20 parts by weight of at least one modifier selected from polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer; The mixture is kneaded in a kneading machine, and the short glass fibers are loosened and cut into single fibers by shearing force, and the short glass fibers having a length of 0.05 to 31 mm are prepared in a resin. The process is to form a mold into a molded product, and then extrude it from an extruder to form a 1ζ molded product.
Even if the short glass fibers are not cut into 0.05 to 3 fins in advance, the short glass fibers bundled by the sizing agent during kneading in the kneading fi will not clump together in one place, but will be loosened into single fibers. The molded product, which is cut into lengths of 0.05 to 3 mm and uniformly dispersed in the resin and extruded from an extruder, has only very small voids around the short glass fibers and mica. It has excellent adhesion between fibers and mica and resin, and as a result, the linear expansion coefficient of the molded product is small and thermal deformation due to temperature changes is less likely to occur, and the tensile strength and fJj resistance are low.
%N properties, good moldability, and a good surface condition of the molded product.

In addition, in the molding method 2 of the present invention, a length of 2 to 12 m + a is bundled with a binding agent on a 100-layer pile of vinyl chloride wood.
5 to 30 short glass fibers and 5 to 30 mica fibers
parts by weight, and at least one modifier selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer 5 and at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate 1
to 5 parts by weight in a mixer, knead the mixture in a kneader, loosen the short glass fibers into single fibers by shearing force, and cut them into single fibers with a length of 0.05 to 3 mm. Since the short glass fibers are dispersed in a resin and then extruded from an extruder to form a molded product, the short glass fibers are not cut into 0.05 to 3 pieces in advance and can be kneaded. During kneading in the machine, the short glass fibers are bundled by a sizing agent and are not clumped together in one place, but are loosened into small fibers, cut into 0.05 to 3 fin lengths, and uniformly dispersed in the resin. The molded product extruded from this extruder has extremely small voids around the short glass fibers and mica, and has excellent adhesion between the short glass fibers and mica and the resin, resulting in a linear expansion of the molded product. It has a small thermal deformation due to temperature changes, has excellent tensile strength and impact resistance, and has extremely good moldability, with a smooth and uniform surface condition of the molded product. , good appearance.

In addition, in the molding method 3 of the present invention, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers with a size of 2 to 12 mm bound by a sizing agent, 5 to 30 parts by weight of mica, and chlorinated At least one modifier selected from polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer 5
20 parts by weight, methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate
1 to 5 parts by weight of at least one processing aid selected from 1. and 10 to 50 parts by weight of calcium carbonate are mixed in a mixer, and this mixture is kneaded in a kneader,
The short glass fibers are combed and cut into single fibers by shearing force, and the length of the glass 9'4 u'li is 0.05 to 3.
Since the fibers are dispersed in a resin and then extruded from an extruder to form a molded product, the coefficient of linear expansion of the molded product is smaller and thermal deformation due to temperature changes is less likely to occur. Moreover, it has excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability, and the surface condition of the molded product is smooth and has a good appearance.

In addition, in the molding method 4 of the present invention, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 0°05 to 300 mm bound by a sizing agent, and 5 to 30 parts by weight of mica. , chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. This mixture is kneaded in a kneader, and the short glass fibers are combed into single fibers and dispersed in the resin by shearing force, and then extruded from an extruder to form a molded product. Since it is to be molded, it is necessary to cut the short glass fibers to lengths of 0.05 to 311 m in advance. The molded product extruded from the extruder has excellent adhesion between the short glass fibers and mica and the resin, and as a result, the coefficient of linear expansion of the molded product is small. Thermal deformation due to temperature changes occurs <<, and the tensile strength and resistance (±i
The physical properties of impact resistance are excellent, the moldability is good, and the surface condition of the molded product is good.

Further, in the molding method 5 of the present invention, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 0°05 to 3 fins, which are bundled with a binding agent, and 5 to 30 parts by weight of mica. , chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-cyclodiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. parts by weight, and at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate 1
to 5 parts by weight are mixed in a mixer, this mixture is kneaded in a kneader, the short glass fibers are loosened into single fibers by shearing force, and dispersed in the resin, and then extruded from an extruder. Since the product is to be molded, it is necessary to cut the short glass fibers to 0.05 to 3 fins in advance. The molded product, which is loosened into single fibers and easily dispersed uniformly in the resin, and extruded from an extruder, has good adhesion between the short glass fibers and mica and the resin, and as a result, the molded product has It has a small coefficient of linear expansion and does not suffer from thermal deformation due to temperature changes.It also has excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability, and the surface condition of the molded product is smooth and uniform. Good appearance.

In addition, in the molding method 6 of the present invention, 100 parts by weight of a vinyl chloride resin, 5 to 30 parts by weight of short glass fibers having a length of 0.05 to 3 mm, which are bundled with a binding agent, and 5 to 30 parts by weight of mica. and at least one modification selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylnylon-butadiene-styrene copolymer, and methyl methacrylate toph taziconine-styrene copolymer. 5 to 20 parts by weight of an agent, 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate acrylonitrile loose narene copolymer and methyl methacrylate, and 10 to 50 parts by weight of calcium carbonate. This mixture is kneaded in a kneading machine, and the short glass fibers are combed into single fibers by shearing force and dispersed in +MJ fat, and then extruded from an extruder to form them. Since the product is to be molded, it is necessary to cut the short glass fibers to 0.05 to 3 mm in advance. The molded product, which is loosened into fibers and easily divided into uniform parts in the resin, is extruded from an extruder.
The adhesion between short glass fibers and mica and resin is excellent, and as a result, the linear expansion coefficient of the molded product is small, and thermal deformation due to temperature changes is more likely to occur (<, and the tensile strength and impact resistance are It has excellent physical properties, has extremely good moldability, and the surface of the molded product is smooth and has a good appearance.

The present invention will be explained below with reference to Examples.

(Example 1. 2. 5. 6. L 10) 1st.
Examples 1, 2, 5, 6 shown in Table 2. ．． 9°10 blend (short glass fibers have a length of 2 to 5 bundled by a sizing agent)
(Using one whose surface has been treated with epoxy silane) was heated and mixed in a mixer at 120°C for 6 minutes, and this mixture was kneaded in a roll kneader for 5 minutes at 160°C to give a thickness of 1.
A 2m++ sheet-like material is made, this sheet-like material is crushed to make a 3-dragon-square crushed piece, and this crushed piece is extruded with an extruder and a mold at a resin temperature of 180 to 185°C to a thickness of 1. ．．
Two female thin-walled heteroplastic molded articles were extruded. A test piece was cut out from the molded product, and the coefficient of linear expansion, tensile strength, elongation, impact strength, and length of the short glass fibers in the molded product were measured. The adhesion was observed.

The results are shown in Examples 1 and 2. 5,6,9.1012 in Tables 1 and 2.

(Example 3. 4. 7. 8. 11. 12) 1st and 2
Example 3 not shown in the table. 4. , 7. 8. Mix the mixture of 11 and 12 (short glass fibers are bundled with a sizing agent and have a length of 0.1 to 0.2 μ and the surface is treated with epoxy silane) using a mixer. This mixture was extruded using an extruder and a mold at a resin temperature of 180 to 185°C to extrude mold a 1.2 IN+I thick LV flesh shaped product. Test pieces were cut out from the molded product, and the coefficient of linear expansion, tensile strength, elongation, impact strength, and length of the short glass fibers in the molded product were measured. The adhesion between them was observed. The results are shown in Table 1.2 as Examples 3, 4, 7, 8, 11.12.

(Comparative Examples 1 and 3) The formulations of Comparative Examples 1 and 3 in Table 3 were mixed well in a mixer, and the mixture was heated to a resin temperature of 180 to 1 in an extruder and mold.
The mixture was extruded at 85° C. to extrusion mold a thin, irregularly shaped article with a diameter of P7: 1.2+i*. A test piece was cut out from the molded product, and the coefficient of linear expansion, tensile strength, elongation and impact strength were measured. The results are shown in Table 3 as Comparative Example 1°3.

(Comparative Example 2) The formulation of Comparative Example 2 in Table 3 (the short glass fibers had a length of 4 to
611m, whose surface was treated with epoxy silane) was tried to be molded in the same manner as in Comparative Example 1, but the moldability was poor and molding was not possible. Mix at a layer temperature, and mix this mixture with a roll kneader for 19 minutes.
Knead at 0°C for 5 minutes to make a sheet with a thickness of 1.2 fins, cut out this sheet and heat it with a hand press at 190°C for 2 minutes at 50 kg/ct.
A 1.3u+ sheet was produced by pressing at 0°C and 100 kg/d for 1 minute, and test pieces were cut out from this sheet and measured and observed in the same manner as in the example. The results are shown in Table 3 as Comparative Example 2. Also shown.

The coefficient of linear expansion was measured using AS"FMjD696. The tensile strength and elongation were measured using JISA5706.
Measured at Regarding impact strength, JIS Δ5400
Measure with a saw. The adhesion between the short glass fibers and mica in the molded product and (Δ) can be determined by observing the cross section of the test piece under an electron microscope and observing the formation of voids around the short glass fibers. By 1111!Jib.

As is clear from Tables 1 and 2, in all of Examples 1 to 4, the coefficient of linear expansion is small, and the physical properties such as impact resistance are poor in comparison examples in which short glass fibers, mica, etc. are not dispersed. The moldability was improved to the extent that it was comparable to the value of 1, and it was possible to mold a thin-walled molded product of 1 J mm, and the surface condition of the molded product was good. In addition, in the case of Examples 5 to 8, the coefficient of linear expansion is small, and the physical properties such as impact resistance are the same as those of short glass fibers.
The value has been improved to the extent that it is comparable to the value of Comparative Example 1 in which mica etc. are not dispersed, and the moldability can be molded into a molded product with a thickness of 1.2 dragons, and the surface condition of the molded product is smooth and uniform. It was extremely good. In addition, IQj of Examples 9 to 12
In both cases, the coefficient of linear expansion is one step smaller, and it is also 1iil.
Physical properties such as impact resistance are improved to the extent that they are comparable to those of Comparative Example 1 in which short glass fibers, mica, etc. are not dispersed,
In addition, the moldability was extremely good, as it was possible to form a thin-walled molded product with a thickness of 1.2 mm, and the surface condition of the molded product was smooth and uniform.

As is clear from Table 3, Comparative Example 1 had a significantly large coefficient of linear expansion and was easily deformed due to temperature changes. In the case of Comparative Example 2, the moldability was poor, making it impossible to mold a thin-walled molded product, and the physical properties such as ill 2'A resistance were so poor that they could not be put to practical use. In the case of Ratio 1 Bite Example 3, although it was possible to form a thin-walled molded product, the surface condition was extremely poor, and the physical properties such as impact resistance were so poor that it could not be put to practical use. (Left below) Table 1 Table 2 Table 3 Procedure'? c City official letter (spontaneous) Mr. Commissioner of the Japan Patent Office 1, Indication of the case, Patent Application No. 42658 of 1982, 2, Name of the invention, Vinyl chloride resin molded product and its molding method 3, Ne11i
Relationship with the person who corrects the case Patent applicant postal code 530 Address 2-4-4 Nishitenma, Kita-ku, Osaka Patent Department TI
EL (06) 365-2181 Patent Department Tokyo resident TE
I, ・(03□), 434-95524, M Positive Object (ll FIA specification claim fence.

(2) Detailed description of the invention in the specification.

Contents of amendment (1) The scope of claims in the description is amended as shown in the attached sheet.

(2) Line 2 from the bottom of page 10 of the specification, lines 8 to 9 of page 11, line 11 of page 11, lines 1 and 12 of page 12
Page 3rd line - 4th line, page 12, 7th line from the bottom - 6th line from the bottom
Lines, page 13, lines 9 to 10, page 13, lines 12, page 13, lines 13 to 14, page 14, line 8, page 14, lines 10 to 11, line 15 page 7 line, page 16 line 1,
Page 16, line 3 to line 4, page 16, line 3 from the bottom to line 2 from the bottom, page 17, line 1, page 19, line 1o, line 19
6th line from the bottom of the page - 5th line from the bottom, page 26, line 7, 2nd line
1st line from the bottom of page 6, 3rd line of page 27, 4th line from the bottom of page 27, 1st line from the bottom of page 27, 6th line from the bottom of page 28~
5th line from the bottom, page 30, lines 1-2, page 30, line 4
Line - 5th line, page 31, 9th line from the bottom - 8th line from the bottom, 31st line 6th line from the bottom - 5th line from the bottom, page 32, 6th line - 5th line from the bottom, 33rd page 3rd line from the bottom of the page - 2nd line from the bottom,
[Methyl methacrylate] in lines 1 and 2 of page 34, lines 5 and 6 of page 35, and lines 8 and 9 of page 35 will be corrected to read ``methyl methacrylate.'' .

(11FIA specification 11th line 9th line from the bottom to 8th line from the bottom, page 12th line 5th line, page 13th line 8th from the bottom to 7th line from the bottom
Line 14, line 9 from the bottom, page 16, line 5, page 17, lines 2 to 3, page 19, lines 4 to 3 from the bottom, page 27, line 4, Page 28, line 1, page 30, line 6,
On page 931, line 4 from the bottom, page 34, line 3, and page 35, line 10, the words ``methyl methacrylate'' will be corrected to ``polymethyl methacrylate.''

f41 Details δ Page 19 @ 3 lines from the bottom, Page 41, Table 1, "Blend" column 7th, Page 42, Table 2, "Blend" column 7
In the frame and @page 43, Table 3, ``Formulation,'' column 5, ``MMA J'' is corrected to ``PMMA J'.

6. List of attached documents (1) Document stating the amended scope of claims 1 or more Claims t 5 to 5 short glass fibers with length α05 to 3H in 100 parts by weight of vinyl chloride resin 30 parts by weight, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-cyclodiene-styrene copolymer, and methyl methacrylate-butadiene-
A vinyl chloride resin molded article comprising 5 to 20 parts by weight of at least one modifier selected from styrene copolymers dispersed therein.

2 In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers with a length α05 to 3 fl, and mica 5
30 parts by weight, and at least one modifier selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-getadiene-styrene copolymer, and methyl methacrylate-getadiene-styrene copolymer. 5 to 20 parts by weight, and methyl methacrylate.
A vinyl chloride resin molded article comprising 1 to 5 parts by weight of at least one processing aid selected from acrylonitrile-styrene copolymer and bo-1 methyl meccrylate.

3. In 100 parts by weight of vinyl chloride resin, length α05
5 to 30 parts by weight of short glass fibers of 3 fl to 3 fl, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-
Vinyl acetate copolymer, acrylonitrile-butadiene-
At least one selected from styrene copolymer and methyl methacrylate-doped diene-styrene copolymer
5 to 20 parts by weight of a seed modifier, 1 to 5 parts by weight of at least one processing aid selected from methyl mechcrylyl-acrylonitrile-styrene copolymer and polymethyl methacrylate, and carbonic acid. Calcium 10-50
A vinyl chloride resin molded product made by dispersing parts by weight.

Table: 5 to 30 short glass fibers with a length of 2 to 12 fi bundled with a binding agent in 100 parts by weight of vinyl chloride resin.
parts by weight, 5 to 30 parts by weight of mica, and at least one selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-getadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. 5 to 20 parts by weight of one type of modifier are mixed in a mixer, the mixture is mixed in a kneader, and the short glass fibers are loosened and cut into single fibers by shearing force,
A method for molding a vinyl chloride resin molded article, which comprises dispersing short glass fibers having a length of α05 to 3n in a resin, and then extruding the fibers from an extruder to form a molded article.

5. 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers with a length of 2 to 12 we bundled with a sizing agent, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate. 5 to 20@91 parts of at least one modifier selected from acrylonitrile-getadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer; 1 to 5 parts by weight of at least one processing aid selected from loose styrene copolymer and polymethyl methacrylate are mixed in a mixer, this mixture is kneaded in a mixer, and the above-mentioned A chlorination process characterized by loosening and cutting short glass fibers into single fibers, dispersing them into short glass fibers with lengths α05 to 3 in a resin, and then extruding them from an extruder to form a molded product. Molding method for vinyl resin molded products.

6. 5 to 30 short glass fibers with a length of 2 to 12 cm, bundled with a sizing agent to 100 parts by weight of vinyl chloride resin.
parts by weight, 5 to 30 parts by weight of mica, and chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-gutadiene-styrene copolymer, and methyl meccrylate-gutadiene-styrene copolymer. 5 to 20 parts by weight of at least one selected modifier, and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and polymethyl methacrylate. , 10 to 50 parts by weight of calcium carbonate are mixed in a mixer, this mixture is kneaded in a mixer, and the short glass fibers are loosened into single fibers by shearing force and cut into single fibers, each having a length of 0.05. ~3H
1. A method for molding a vinyl chloride resin molded article, which comprises dispersing the short glass fibers in a resin and then extruding them from an extruder to form a molded article.

7. Add a sizing agent to 100 parts by weight of vinyl chloride resin.
7 5 to 30 parts by weight of short glass fibers with a bundled length α05 to 3 txz, 5 to 30 parts of mica, chlorinated polyethylene, ethylene-acetic acid □vinyl copolymer,
At least one modifier selected from the group consisting of acrylonitrile-getadiene-styrene copolymer and methyl meccrylyl-gukudiene-styrene copolymer 5 to 20
parts by weight in a mixer, the mixture is kneaded in a mixer, the short glass fibers are loosened into single fibers by shearing force and dispersed in the resin, and then extruded from an extruder. A method for molding a vinyl chloride resin molded product, the method comprising: molding a molded product using a polyvinyl chloride resin.

8. PVC resin 100 mold part, 5 to 30 parts by weight of short glass fibers with a length α05 to 3 cape bound with a sizing agent, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene. - 5 to 20 parts by weight of at least one modifier selected from vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate--butadiene-styrene copolymer and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and polymethyl methacrylate in a mixer, and the n1 mixture is mixed in a kneader. A vinyl chloride resin molded product characterized by kneading the 111F short glass fibers into single fibers using shearing force and dispersing them in the resin, and then extruding the strands from an extruder to form a molded product. Molding method.

9. Vinyl chloride-based FA fibers, 100 parts by weight, short glass fibers 5 with a length αo5 to 3ff bundled with a binding agent
5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-on-pucdiene-styrene copolymer. At least one modifier selected from 1 to 5 parts by weight of at least one processing aid selected from 5 to 20 weight rates and 1 to 50 parts by weight of carbonic acid lucicum are mixed in a mixing machine. This mixture is kneaded in a mixer, the short glass fibers are loosened into single fibers by shearing force, and dispersed in the resin, and then extruded from an extruder to form a molded product. A molding method for vinyl chloride resin molded products.

Claims (1)

[Claims] (1) In 100 parts by weight of vinyl chloride resin, a length of 0.05
5 to 30 parts by weight of short glass fibers of 5 to 31, and 5 to 30 parts by weight of mica.
30 parts by weight, and at least one selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-1-butadiene-styrene copolymer. 2. Vinyl chloride resin molded product with a length of 0.05% in 100 parts by weight of vinyl chloride resin.
5 to 30 parts by weight of short glass fibers of 3 am to 3 am, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene. - At least one modifier selected from styrene copolymers 5 to 2. Vinyl chloride in which OmW part and 1 to 5 parts of at least one processing aid selected from methyl methacrylate-1-acrylonitrile-styrene copolymer and methyl methacrylate are dispersed. Resin molded products. 3. In 100 parts by weight of vinyl chloride resin, length 0.05
5 to 30 parts by weight of short glass fibers of 5 to 31, and 5 to 30 parts by weight of mica.
30 parts by weight, and at least one selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer.
5 to 20 parts by weight of a seed modifier, 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate, and calcium carbonate IO. ~50
A polyvinyl chloride resin molded product in which regular parts are dispersed. 4. 5 to 3 short glass fibers with a length of 2 to 12 m+1 bundled with a binding agent in 100 parts by weight of vinyl chloride resin
0 parts by weight, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methylmethacryle-1-butadiene-styrene copolymer. 5 to 20 parts by weight of at least one modifier selected from among the above are mixed in a mixer, and this mixture is kneaded in a kneader,
The short glass fibers are combed and cut into single fibers by shearing force, and the short glass fibers having a length of 0.05 to 3 parts are dispersed in a resin, which is then extruded from an extruder to form a molded product. A method for molding a vinyl chloride resin molded product. 5. 5 to 3 short glass fibers with a length of 2 to 12++ m bundled with a sizing agent to 100 parts of vinyl chloride resin
0 parts by weight, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-1! lI1. 5 to 20 parts by weight of at least one modifier selected from IIJI vinyl copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer; and methyl methacrylate-butadiene-styrene copolymer. At least one processing aid selected from acrylonitrile-styrene copolymer and methyl methacrylate 1 to 5
parts by weight in a mixer, knead the mixture in a kneader, and comb and cut the short glass fibers into single fibers by shearing force to obtain short glass fibers with a length of 0°05 to 3 fins. 1. A method for molding a vinyl chloride resin molded article, which comprises dispersing the resin in a resin, and then extruding it from an extruder to form a molded article. 6. 100 parts by weight of a vinyl chloride resin, 5 to 30 parts by weight of short glass fibers with a length of 2 to 121111 bound by a sizing agent, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate, etc. 5 to 20 parts by weight of at least one modifier selected from the group consisting of acrylonitrile-butadiene-styrene copolymer and methyl methacrylate-1-1-butadiene-styrene copolymer; 1 to 5 parts by weight of at least one processing aid selected from a rate-acrylonitrile-styrene copolymer and methyl methacrylate and 10 to 50 parts by weight of calcium carbonate are mixed in a mixer, and this mixture is mixed. are kneaded in a kneader, and the short glass fibers are loosened and cut into single fibers by shearing force, and the length is 0.05.
- 3 Dispersed in resin as short glass fibers of tuna,
A method for molding a vinyl chloride resin molded article, which comprises then extruding it from an extruder to form a molded article. 7. 5 to 3 short glass fibers with a length of 0.05 to 3 fins bundled with a sizing agent in 100 parts by weight of vinyl chloride resin
0 parts by weight, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butane 1-styrene copolymer. 5 to 20 parts by weight of at least one modifier are mixed in a mixer, this mixture is kneaded in a kneader, and the short glass fibers are loosened into single fibers by shearing force and dispersed in the resin. 1. A method for molding a vinyl chloride resin molded product, which comprises: compressing the molded product, and then extruding it from an extruder to form a molded product. 8. Place 5 to 30 flf of short glass fibers with a length of 0.05 to 3 mm bundled with a sizing agent, 5 to 30 parts by weight of mica, and chlorinated polyethylene, ethylene- #r! ! , 5 to 20 parts by weight of at least one modifier selected from vinyl copolymers, acrylonitrile-butadiene-styrene copolymers, and methyl methacrylate-butadiene-styrene copolymers; and methyl methacrylate. 1 to 5 parts by weight of at least one processing aid selected from acrylonitrile-styrene copolymer and methyl methacrylate are mixed in a mixer, this mixture is kneaded in a kneader, and the shear force is increased. A method for molding a vinyl chloride resin molded article, which comprises loosening the short glass fibers into single fibers and dispersing them in a resin, and then extruding them from an extruder to form a molded article. 9. 5 to 3 short glass fibers with a length of 0.05 to 3 bound with a sizing agent in 100 parts by weight of vinyl chloride resin
0 parts by weight, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methylmethacryle-1-butadiene-styrene copolymer. 5 to 20 parts by weight of at least one modifier selected from among; 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate to acrylonitrile-styrene copolymer and methyl methacrylate; parts by weight and 10 to 50 parts by weight of calcium carbonate are mixed in a mixer,
This mixture is kneaded in a kneader, the short glass fibers are combed into single fibers by shearing force, and dispersed in a resin, and then this is extruded from an extruder to form a molded product. Molding method for resin molded products.