JPH02228336A - Production of porous flooring - Google Patents

Abstract

PURPOSE:To obtain a porous flooring hardly slippery for a long time by bringing porous powdery granules into contact with a liq. evaporating at a relatively low temp. (e.g. water) and making it adsorb the liq., mixing it with a thermosetting resin, molding the mixture, heat-curing it, eliminating the adsorbed liq. and forming uniform fine pores. CONSTITUTION:Porous powdery granules (e.g. zeolite) are brought into contact with a liq. evaporating at a relatively low temp. to adsorb it, and mixed with a thermosetting resin (e.g. an epoxy resin), and the mixture is molded. The molded item is heat-cured and, during or after the heat-curing, the liq. adsorbed in the powdery granules is eliminated to form fine pores to thereby give a porous flooring. When this flooring is wetted with water, the water moves into the pores and the water film on the surface decreases. This flooring is therefore hardly slippery and is suitably used for a flooring of a bath room, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a porous floor material suitable for locations that are easily wetted by water.

[Conventional technology]

Bathroom, cooking room, toilet, entrance, balcony, poolside,
Flooring materials used in areas that are easily wetted by water, such as shower rooms, are particularly required to be resistant to slipping even when wet.

Floor materials that meet these demands include, for example:
The one described in Japanese Utility Model Publication No. 57-15308 is known. The method for manufacturing the water-permeable resin concrete layer that makes up this floor material is to coat the surface of aggregate such as sand with a particle size of 0.3 mm or more with a thermosetting resin, and connect and solidify it at the contact area of the aggregate. This is a method of forming continuous micropores between aggregates and forming them into a plate shape.

However, flooring materials produced using this manufacturing method simply connect and solidify at the contact points to form gaps between the aggregates, so the diameter of the micropores is large. Therefore, solid impurities can enter the micropores along with water. However, they have the problem of being easily stained and clogging, resulting in a decrease in water permeability.

[Problem to be solved by the invention]

The present invention has been made in view of the problems of the prior art, and its object is to provide a porous floor that is non-slip for a long period of time even under usage conditions where wet conditions frequently occur. The object of the present invention is to provide a method for manufacturing materials.

[Means to solve the problem]

The method for producing a porous floor material of the present invention involves bringing porous powder into contact with a liquid that evaporates at a relatively low temperature to adsorb the liquid, and then mixing the porous powder with a thermosetting resin. The gist is to form fine pores by releasing the liquid adsorbed to the porous powder during or after heat curing.

Furthermore, in the above manufacturing method, performing heat curing and releasing the liquid using a hot press allows the molded product to be cured and the liquid component to be released at the same time, and is effective in preventing deformation during curing.

The porous powder used in the present invention has a large number of micropores and can adsorb moisture, steam, etc. into these pores, and may be either natural or synthetic. Examples include Seviolite, zeolite, etc., and small pieces obtained by crushing or cutting porous floor materials obtained by implementing the present invention.

Although the particle size of the porous powder does not significantly affect the amount of liquid adsorbed, a particle size in the range of 0.1 to 500 .mu.- is usually used. In addition, the mixing ratio with respect to the total weight of powder and granules is −
If the amount is too high for boat fishing, the dispersion of the porous powder into the resin will be poor and the pore diameter of the micropores formed will become large; if the mixing ratio is too low, there will be fewer micropores (and the pore volume will become smaller). Therefore, about 0.5 to 25% by weight is usually used, preferably about 5 to 15% by weight.

Liquids that evaporate at relatively low temperatures in the present invention include alcohols and ethers that do not react with water and thermosetting resins. Water is preferred for its stability and ease of handling. Methods for adsorbing liquid onto porous powder include immersing the porous powder in a liquid, or spraying the liquid onto the porous powder. A method of adsorption or adsorption by adhesion is used. Note that the type of liquid is changed, and the adsorption amount of the porous powder and granular material is adjusted by adjusting the diameter and amount of micropores formed by jjlfil.

The thermosetting resin used in the present invention is not particularly limited, and includes, for example, unsaturated polyester resin, epoxy resin,
Examples include phenol resin, furan resin, etc., and its properties may be liquid or solid at room temperature.The mixing ratio of this thermosetting resin depends on the type of resin, reinforcing material, etc. It varies depending on the situation, but approximately 1 to 50
It is about % by weight.

As the reinforcing material used in the present invention, in particular fibers such as mineral fibers, lightweight concrete aggregates, etc. are used, and two or more types of reinforcing materials may be used. In terms of quality such as abrasion resistance, fibrous materials are preferable, such as 1F glass fibers, short alumina fibers, whiskers, carbon fibers, and the like. Further, the mixing ratio of the fiber reinforcing material is about 50 to 95% by weight, which is the same range as that used for reinforcing ordinary floor materials.

For forming, normal methods for forming floor materials such as press forming and calendar forming are used, and in the case of press forming, cold forming,
Although hot pressing may be used, hot pressing is advantageous from the viewpoint of simultaneously curing the molded body and detaching and releasing the liquid component, and preventing deformation during curing.

The heat curing conditions in the present invention are the same as the usual conditions for curing floor materials using thermosetting resins.

In addition, the method of releasing the liquid adsorbed by the powder or granular material in the present invention is preferably a method of heating to evaporate the adsorbed liquid to desorb and release it, and the temperature of this desorption and release treatment is set to and depending on the liquid, for example 60~
It is in the range of 250″C.

[Effect]

In the present invention, a liquid that evaporates at a relatively low temperature is adsorbed onto a porous powder, and then the porous powder is mixed with a thermosetting resin and a reinforcing material, molded, and then heated and cured. A porous floor material is produced by desorbing and releasing the liquid adsorbed by the powder and granules, and forming micropores in the area where the liquid has been released from the molded body. As described above, in the method for producing a porous floor material of the present invention, the liquid is adsorbed onto the porous powder, so the diameter and amount of the micropores formed can be adjusted depending on the type and amount of the liquid to be adsorbed. In addition, if the molded body is heated and cured and the liquid adsorbed by the porous powder is released using a hot press, the molded body can be hardened and the liquid component can be desorbed and released at the same time, and deformation during curing can be prevented. It can be prevented.

〔Example] Examples are shown below.

1. Seviolite (particle size: approximately 3 μm) as a flamed porous powder 8
Part by weight was immersed in water in advance to adsorb 8 parts by weight of water, and this was added to 3 parts by weight of unsaturated polyester resin, stirred and mixed to form a mixture, and then press molded (100 kg/
cm") L. Next, by heating at 80°C, the resin was cured and at the same time, the adsorbed moisture was desorbed and released to obtain the desired floor material.

15011 A mixture produced in the same manner as in Example 1 was press-molded using a hot press (100°C, 100kg/Cj'').

1 hr) L, while curing the resin, the adsorbed moisture is simultaneously desorbed and released to form the desired floor.
I got the material.

Zeolite (instead of sepiolite in Example 1)
A desired floor material was obtained in the same manner as in Example 1, except that 8 parts by weight (particle size: about 2 μm) was used and 6 parts by weight of water was adsorbed thereto.

Conventional medicine particle size 0. ．． 1 part by weight of unsaturated polyester resin is mixed with 5 parts by weight of sand of about 3++w, and the surface of the sand is coated with the resin.
This was placed in a mold and heated and cured at 80'C to obtain a plate-shaped molded product (method for manufacturing a water-permeable resin concrete layer described in Japanese Utility Model Publication No. 15308/1983).

In addition, as a comparative example for comparing performance such as water permeability, 0
．． The following test was conducted using a glass filter (10c square, 1 mm thick) having a pore size of 3 .mu.m as a sample.

That is, the water permeability of the comparative example of the floor material made from the example, the conventional example, and the sample made from the glass filter,
Pore diameter, pore volume, stain resistance, and slip resistance were evaluated. The results of the evaluation are shown in Table-1.

The water permeability was measured in accordance with the JIS A 5403 water permeability test, and the water permeability was 1.0cc/am.
Items over -hr are marked with a ◎, and 1.0 to 0.01cc
/cm”-hr is indicated by O, 0.01cc/
Values less than cs”·hr are indicated by ×.

The pore size is measured by the mercury pressure method, and ◎ indicates that the volume percentage of the total pore volume is less than 10% with a pore diameter of 1μ or more, and 10% or more has a pore diameter of 1μ or more and a pore size of 5μ
Those with a pore diameter of m or more and less than 10% were indicated by 0, and those with a pore size of 5 μm or more and 10% or more were indicated by x.

The pore volume is measured by the mercury displacement method, and the total pore volume is Q, 1 cc/g or more is indicated by O, and 0
．． 1 to 0.05 cc/g is indicated by O, and 0.05
Those less than cc/g are indicated by ×.

Regarding stain resistance, talcum powder (particle size of 10 μ■ or less) was dispersed in water at a rate of 0.2 g/cc, and this dispersion was
00++m x 100m-50 for porous flooring material
In the CC test, cases where talc powder remains on the surface of the floor material and can be washed off later are indicated by ◎, and cases where talcum powder flows out from the back surface or causes clogging are indicated by ×. Ta.

Slip resistance is determined according to JIS on the sloped surface of the floor material.
Artificial leather test piece (50mm x 30mm) instead of felt for slip test in A 5721, load 2k
g, when wet, the slope is changed, the angle at which the artificial leather test piece starts to slide is measured, and the friction coefficient between the floor material and the artificial leather test piece is calculated, and the friction coefficient is 0.8 or higher. is indicated by ◎, those of 0.6 to 0.8 are indicated by O,
Those less than 0.6 were marked with an x.

As can be seen from Table 1, the porous floor material manufactured by the method of the present invention is ◎ in all water permeability, pore diameter, pore volume, stain resistance, and slip resistance, and the conventional example and comparative example Both have stain resistance of X and are easily soiled.In particular, in the conventional example, more than 10% of the pores have a pore diameter of 5 μ- or more.
From this, it can be said that contaminants can cause knots in the eyes.

Table 1 Pore diameter and pore volume can be easily adjusted. Therefore, fine pores with good uniformity can be formed, and the material is resistant to staining.Moreover, water moves into the pores when wet, reducing the water film on the surface, resulting in a porous floor material that is resistant to slipping.

that's all

Claims (1)

[Claims] 1. After bringing the porous powder into contact with a liquid that evaporates at a relatively low temperature to adsorb the liquid, and then mixing the porous powder with a thermosetting resin and molding it, A method for producing a porous floor material, which comprises curing by heating and releasing liquid adsorbed to the porous powder during or after curing by heating to form micropores. 2. A method for producing a porous floor material, characterized in that the heating and curing of the molding according to claim 1 and the release of the liquid are carried out using a hot press.