JPS59220355A - Manufacture of building panel for executing mortar at site - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a construction panel suitable for applying mortar at a construction site.

Traditionally, when finishing the exterior walls of a wooden building with mortar, a wall framework was created, log boards were nailed onto it, and asphalt-impregnated asphalt felt paper and metal lath were stretched over the entire surface and fixed with rivets. However, this conventionally known mortar finishing method is an example of a method of applying mortar.

Since rivets are used, the waterproofness of the mortar base layer is poor.
Furthermore, it has the disadvantage of poor workability.

Therefore, as a construction method to improve the drawbacks of conventionally known mortar finishing methods, a mixture of rubber asphalt emulsion and clay emulsion is applied to the substrate surface.
A construction method has been proposed in which mortar is mixed with an adhesive. but.

This construction method also has poor waterproof properties of the mixture coating layer. still.

The mixture of rubber asphalt emulsion and clay emulsion used in this construction method is.

It has low heat resistance, has a bad odor, and has low mortar adhesion, so it is necessary to use a mixture of mortar and adhesive, and when applying it to the board surface, it is difficult to apply with a brush and must be sprayed. It has drawbacks such as:

In addition, 2 plywood 1 asbestos board 1 water-dispersed rubber containing butyl recycled rubber emulsion as the main component on one side of a single-layer or multi-layer board of ready-made products such as plywood board, cement mortar board, metal board, plastic board, etc. A method has been proposed in which a pressure-sensitive adhesive is applied, uncured cement mortar or gypsum mixed with water is applied, and the uncured material is cured and then made into an adhesive to produce a panel. The disadvantage of this manufacturing method is that after the water-dispersed rubber-based pressure-sensitive adhesive has been applied and dried, uncured cement mortar or plaster must be applied again.

During the panel manufacturing process, uncured cement mortar or plaster must be applied and cured.

It takes a long time and is not productive and economical.

It is necessary to use semi-hardened cement mortar or plaster.

However, semi-hardened cement mortar has a short pot life and causes variations in quality.

The inventors completed this invention as a result of intensive research into building panels for on-site mortar construction that do not have the above-mentioned drawbacks.

That is, the present invention applies asphalt, 5 to 70 parts by weight of styrene-butadiene copolymer rubber, 30 to 200 parts by weight of thermoplastic resin, and 100 parts by weight of asphalt to one side of a board such as a wooden board 9 asbestos board. Inhibitor 0.1~
0.4 to 2.01'4 of an emulsion composition containing parts by weight of IO and a nonionic or anionic surfactant.
/n? The present invention relates to a method for manufacturing architectural panels for on-site mortar construction, which is characterized in that the panels are applied at a ratio of .

The construction panel for on-site mortar construction obtained by this invention does not emit a bad odor during panel manufacture, and there is no need to apply uncured cement mortar or plaster, so it is also highly productive and economical. Very good.

Furthermore, the construction panel for on-site construction obtained by this invention is
Since the emulsion composition has excellent weather resistance, it is possible to obtain sufficiently high adhesive strength even if the panel is left in the air for several months after being made and then cement mortar is applied.

There are no particular limitations on the boards used in this invention, and examples include one plywood board, one asbestos board, nine plaster boards, a cement mortar board, a metal board, and a plastic board. Among these, wooden boards such as plywood and asbestos boards are preferably used.

In this invention, asphalt and asphalt 100
5 to 5 parts by weight of styrene-butadiene copolymer rubber
It is necessary to use an emulsion composition containing 70 parts by weight of a thermoplastic resin, 30 to 200 parts by weight of a thermoplastic resin, 0.1 to 10 parts by weight of an antiaging agent, and a nonionic or anionic surfactant. This makes it possible to obtain panels that can be coated with mortar on-site after being left for a long time without applying cement mortar or plaster.

The emulsion composition described above can be obtained by adding and mixing each component to water, but preferably contains each component and a nonionic or anionic surfactant. It can be obtained by mixing an asphalt emulsion, a styrene-butadiene copolymer rubber emulsion, a thermoplastic resin emulsion, and an anti-aging agent. When mixing emulsions of each component, it is desirable that the same type of surfactant be blended.

The asphalt emulsion used to obtain the emulsion-based composition used in this invention can be made of known natural asphalt, petroleum asphalt such as straight asphalt or plain asphalt, or J
It is an emulsion of asphalt for waterproofing work specified in 5-A6011, and the proportion of asphalt in the total amount is preferably 40 to 700 to 70 parts by weight.

As the nonionic surfactant, known surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkylphenol ether, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene alkylamine are used.

Examples of anionic surfactants include fatty acid salts, alkyl sulfates, alkylbenzene sulfonates, alkylbenzene naphthalene sulfonates, alkyl sulfosuccinates,
Alkyl phosphate ester salt.

Polyoxyethylene alkyl sulfate salts, naphthalene sulfonic acid formalin condensates, etc. are used.

The asphalt emulsion can be obtained by a method known per se, for example, a method of stirring and mixing water containing the nonionic or anionic surfactant and molten asphalt.

The nonionic or anionic styrene-butadiene copolymer rubber emulsion used to obtain the emulsion composition used in this invention preferably has a rubber content of 40 to 70% by weight based on the total amount of the emulsion. A polymer rubber containing styrene in a proportion of 5 to 70% by weight is used.

As the nonionic or anionic surfactant, the same surfactant as used in the nonionic or anionic asphalt emulsion is preferably used.

The nonionic or anionic thermoplastic resin emulsion used to obtain the emulsion composition used in this invention contains a nonionic or anionic surfactant and a thermoplastic resin. Preferably, the proportion of resin is 40 to 70% by weight.

As the nonionic or anionic surfactant, the same nonionic or anionic surfactant as used in the nonionic or anionic asphalt emulsion is used.

Examples of the thermoplastic resin include acrylic acid, methacrylic acid, methyl acrylate, and ethyl acrylate.

Methyl methacrylate, ethyl methacrylate, etc.
Polymers, copolymers thereof, copolymers of these with acrylonitrile, vinyl acetate polymers, copolymers of vinyl acetate and ethylene, etc. are used.

Antiaging agents used in this invention include known aromatic secondary amines, phosphoric acid esters, alkylphenols, benzimidazoles, thioureas,
Dithioates, reaction products of amines and ketones, trade name:
Sunnock, Sunnock N" is used.

The blending ratio of each component is 100 parts by weight of asphalt.
5 to 70 parts by weight of styrene-butadiene copolymer rubber,
Preferably it is 10 to 50 parts by weight, and the thermoplastic resin is 2 parts by weight.
0 to 600 parts by weight, preferably 50 to 200 parts by weight, and 0.1 to 10 parts by weight, preferably 0.1 to 10 parts by weight of anti-aging agent.
It is 3 to 5 parts by weight. If the amount of styrene-butadiene copolymer rubber is outside the above range, problems such as the emulsion composition becoming hard and cracking at low temperatures, or conversely becoming soft and reducing mortar adhesion, are preferred. do not have. The amount of thermoplastic resin is outside the above range.

This is not preferable because the mortar adhesion force when applied with mortar is reduced and the waterproof property of the composition coating layer is reduced. Moreover, when the amount of anti-aging agent is outside the above range,
If the mortar adhesion after the panel is left in the atmosphere for a long period of time (for example, several months) decreases, the cost of the panel increases, which is undesirable.

The emulsion composition in this invention includes:

Vulcanizing agents, vulcanization accelerators, vulcanization accelerators, etc., as long as they do not impair the workability of the emulsion composition, the mortar adhesion of the emulsion composition layer, the mortar adhesion properties after being left for a long period of time, and the waterproof properties. agent, filler.

A thickener, desiccant, antifungal agent, etc. may be added.

Colloidal sulfur is used as the vulcanizing agent.

The vulcanization accelerator includes dithiocarbamates such as sodium di-n-butyldithiocarbamate, sodium diethyldithiocarbamate, sodium dimethyldithiocarbamate, zinc N-ethylphenyldithiocarbamate, zinc diethyldithiocarbamate, and zinc dimethyldithiocarbamate. Similar vulcanization accelerators are used.

As the vulcanization accelerator, zinc oxide, magnesium oxide, etc. are used.

The mixing ratio of each of the above components is such that the vulcanizing agent is 0% per 100 parts by weight of the nonionic and anionic asphalt emulsion.
．． 1 to 5 parts by weight, 0.1 to 6 parts by weight of the vulcanization accelerator, and 0.1 to 5 parts by weight of the vulcanization accelerator. Ground calcium carbonate with an average particle size of 50 to 200μ within the range;
Silica sand etc. are used.

The amount of filler is preferably 300 parts by weight or less, particularly 50 to 600 parts by weight, per 100 parts by weight of the asphalt emulsion. If the amount of the filler is outside the above range, the adhesion of mortar to the adhesive composition coating layer will be small and the waterproofness will be reduced.

As the thickener, one example of a known water-soluble thickener, tJf
, methylcellulose, ethylcellulose, carboxymethylcellulose, polyvinyl alcohol, etc. are used.

The amount of the thickener is preferably 5 parts by weight or less per 100 parts by weight of the nonionic or anionic asphalt emulsion. If the amount of the thickener is outside the above range, the waterproofness of the coating layer of Composition 9 will be reduced.

Ammonium carbonate is used as the desiccant.

The amount of desiccant is preferably 10 parts by weight or less, particularly 0.1 to 10 parts by weight, per 100 parts by weight of the nonionic or anionic Askuald emulsion. If the desiccant content is outside the above range, air bubbles, cracks, etc. will appear in the coating layer of the 9 composition.
Waterproofing 1 Mortar adhesion decreases.

As the fungicide, nine known fungicide such as hala-chloro-meta-xylene, 2,4-dinitrophenol, 2-(a-thiazolyl)benzimidazole, etc. are used.

The amount of the fungicide is 1 part by weight or less, especially 0 parts by weight per 100 parts by weight of the nonionic or anionic asphalt emulsion.
．． 05 to 1 part by weight is preferred. Even if the amount of the fungicide is outside the above range, the fungicidal effect remains uneconomical.

This invention provides a construction panel for on-site mortar construction.

For example, the nonionic or anionic asphalt emulsion, the nonionic or anionic styrene-butadiene copolymer rubber emulsion.

After creating an emulsion-based composition by mixing the nonionic or anionic thermoplastic resin emuldimine, each component of the anti-aging agent, and if necessary, the other components in the above-mentioned proportions by a method known per se, A coating of 0.4 to 2.0% per 100 ml of wood is applied to one side of the wood board, 1 plaster board, 1 asbestos board, cement board, metal board, plastic board, or other single or multilayer board by a method known per se. It is obtained by applying 0 kg and drying it. The coating method may be a doctor knife method, a roll coater method, a spray method, or a brush method, and it is desirable to form an uneven pattern on the surface. In addition, when curing and drying, it is desirable to leave the product at a temperature of 10 to 80° C. for 20 to 24 hours.

The panels obtained by the above method do not lose their mortar adhesion properties even after being left for a long period of time, have excellent water resistance, and are economically superior in terms of panel manufacturing costs.

This invention provides a construction panel for on-site mortar construction.

It can be used to mortar finish the exterior walls of houses built using panel construction, houses built using 2" x 4" construction, or houses built using conventional construction.

Next, examples will be shown.

In the examples, the mortar adhesion of the emulsion composition layer and the mortar adhesion after 6 months are the emulsion composition coated layers of the building panels for on-site mortar construction (immediately after creation or after being left for 6 months) manufactured according to the examples. A mortar finish obtained by applying mortar with a sand:cement ratio of 1:1 (weight ratio) and containing 7 meters/ton of water to a thickness of 10 cm on the surface and curing for 4 weeks. This is the adhesion force between the plywood and the mortar coating layer, which was determined by cutting out a sample of ACm x 4Cm for the panel and pulling it at 50 yH/min using a universal tensile test machine.

The heat resistance test of the emulsion composition coating layer was conducted as follows. A weight was attached to the center of the mortar coating layer of the test piece for the mortar adhesion test, and the mortar coating layer peeled off from the plywood by hanging it in an oven at 260°C for 6 hours with the weight at the lowest end. Then, the minimum load (r/i) of the weight when the weight falls was determined. The larger the minimum load, the better the heat resistance of the coating layer of the composition.

The drying time of the emulsion-based composition was determined by applying the emulsion-based composition to the water-resistant plywood at a rate of 1 kg/- using a roll brush, and applying the emulsion-based composition to the surface coated with the obtained emulsion-based composition at 80°C at a wind speed of 5 m/SeC. It was determined by applying dry air.

It is expressed as the time from the start of applying dry air until 80% of the water in the composition evaporates.

Also, what is the waterproof property of the emulsion composition coating layer?

The emulsion composition was applied onto paper using a roller brush at a rate of IKg/- and left to dry for a day and night.
After that, the surface of the emulsion-based composition coating layer was coated with a caulking agent, water colored with red ink was added to the area covered with the caulking agent, and the paper was left for one week at room temperature, and the presence or absence of discoloration of the paper was judged. The waterproof property when the paper turned red was marked as ×, and the waterproof property when the paper did not change color was marked as ○.

Example 1 A nonionic surfactant (polyoxyethylene lauryl ether) was used. A nonionic surfactant was used in an asphalt emulsion I D 0jtt portion in which the proportion of asphalt in the total amount of the emulsion was 57% by weight. The proportion of copolymer rubber in the total amount of the emulsion is 51% by weight, and the proportion of styrene in the copolymer rubber component is 2%.
25 parts by weight of an emulsion of styrene-butadiene copolymer rubber with a concentration of 6% by weight and a molar ratio of methyl acrylate and methacrylic acid using a nonionic surfactant of 3:1.
The proportion of the copolymer of methyl acrylate and methacrylic acid in the total amount of the emulsion is 50% by weight.
After adding 100 parts by weight of a thermoplastic resin emulsion and mixing with stirring, 1.0 parts by weight of trisnonylphenol phosphite was added and mixed with stirring to prepare an emulsion composition. −? The emulsion composition is 1. After applying with a roller brush so as to give oKy, it was dried at 50 to 80° C. for 1 hour using a hot air dryer to produce a construction panel for on-site mortar construction.

The results are summarized in Table 1.

Example 2 A panel was manufactured in the same manner as in Example 1, except that asbestos board was used instead of plywood.

The results are summarized in Table 1.

Example 6 100 parts by weight of a nonionic asphalt emulsion having the same composition as that used in Example 1, 25 parts by weight of a styrene-butadiene copolymer rubber emulsion having the same composition as used in Example 1, and 25 parts by weight of a styrene-butadiene copolymer rubber emulsion used in Example 1. After adding 100 parts by weight of a thermoplastic resin emulsion with the same composition as above and stirring and mixing, 200 parts of crushed calcium carbonate with an average particle size of 100 μm, 1.0 parts by weight of lisnonylphenol phosphite, and sodium After adding and stirring 1.0 parts by weight of di-n-butyldithiocarbamate, 6.0 parts by weight of zinc oxide, 1.0 parts by weight of colloidal sulfur and 6.0 parts by weight of ammonium carbonate, 1 part by weight of methylcellulose (400 centipoise) was added. .3 parts by weight and 0.3 parts by weight of parachloromethaxylene were added and mixed with stirring to prepare an emulsion composition.

Table 1 summarizes the results of the emulsion per 1 cm on 90 c@X 180 cnL plywood.

Example 4 A panel was manufactured in the same manner as in Example 4, except that asbestos board was used instead of plywood.

The results are summarized in Table 1.

Example 5 An anion having the same composition as that used in Example 1 was added to 100 parts by weight of an anionic asphalt emulsion having the same composition as that used in Example 1 (however, sodium lauryl sulfate was used as the anionic surfactant). 25 parts by weight of an emulsion of styrene-butadiene copolymer rubber and 100 parts by weight of an emulsion of an anionic thermoplastic resin having the same composition as that used in Example 1 were added and mixed with stirring, followed by pulverized carbonic acid having an average particle size of 100μ. 200 parts by weight of calcium and 1.0 parts by weight of trisnonylphenol phosphite,
After adding and stirring 1.0 parts by weight of sodium di-n-butyldithiocarbamate, 6.0 parts by weight of zinc oxide, 1.0 parts by weight of colloidal sulfur, and 6.0 parts by weight of ammonium carbonate, 1 part by weight of methylcellulose (400 centipoise) was added. .3 parts by weight and 0.3 parts by weight of parachloromethaxylene were added and mixed with stirring to prepare an emulsion composition.
ocfix Manufactures 180cm architectural panels for tables.

The results are summarized in Table 1.

Example 6 A panel was manufactured in the same manner as in Example 5, except that asbestos board was used instead of plywood.

Claims (1)

[Scope of Claims] Wooden board 1. On one side of a board such as an asbestos board, asphalt and 5 to 70 parts by weight of styrene-butadiene copolymer rubber, 60 to 200 parts by weight of thermoplastic resin and aging per 100 parts by weight of asphalt are added. A method for producing a building panel for construction with mortar, in which an emulsion composition containing 0.1 to 10 parts by weight of an inhibitor and a nonionic or nonionic surfactant is applied to a 0.4 to 2.0 Kb emulsion composition.