JPH03220382A - Porous floor material - Google Patents

Abstract

PURPOSE:To obtain the title floor material of high durability, resistant to slip even in a wet state, and excellent in surface smoothness by thermoforming a blend of a synthetic resin powdery at normal temperature of specified granular size and several kinds of powder differing in affinity for said resin from one another in performing the thermoforming. CONSTITUTION:A blend of (A) a synthetic resin powdery at normal temperature with the granular size smaller than that of the powder high in affinity therefor in the forming (e.g. polyvinyl chloride, nylon), (B) powder high in affinity for said resin in the forming and (C) a different kind of powder poor in affinity for said resin with the granular size smaller than that of the above powder, is put to thermoforming to produce the objective porous floor material causing no cloggings and resistant to slip. For the powder differing in the affinity from one another, for example, same kinds powder is surface-treated to make its affinity differ from that of the original powder (e.g. aggregates for structural lightweight concrete, fibrous reinforcing materials).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a porous floor material that has excellent water permeability and is particularly resistant to slipping even when used in wet conditions.

[Conventional technology]

Flooring materials used in places that frequently get wet, such as bathrooms, kitchens, toilets, and entrances, are required to be particularly resistant to slipping when wet.

Conventionally, the following techniques are known regarding this type of floor material.

■By connecting and solidifying the surface of aggregate such as sand with a particle size of 0°3■■ or more with thermosetting resin, a water permeable resin concrete layer with continuous water permeable pores formed between the aggregates is formed. These water permeable holes allow water to permeate from the surface of the floor material to the back side, preventing slipping when wet (for example, see Japanese Utility Model Publication No. 15308/1983).
.

- Adding anti-slip properties to the surface of a floor material made of vinyl chloride resin by scattering particles on the surface of the floor material (for example, U.S. Pat. No. 4,196°243 and U.S. Pat. 239,797).

■By forming irregularities on the surface of the floor material, making the surface rough, and providing an elastic body on the surface, anti-slip properties are imparted to the surface of the floor material (for example, U.S. Pat. No. 4,333
No. 6,293 and U.S. Patent No. 4°403,009
(see specification).

[Problem to be Solved by the Invention] However, in the configuration (2) above, since the diameter of the water permeable hole is large, foreign matter enters the water permeable hole along with water, causing clogging and reducing water permeability. In the configurations of ■ and ■ above, slipping is prevented by providing roughness to the surface of the floor material, such as by providing unevenness on the surface.
There are problems in that it gets dirty easily and has poor surface smoothness.

In addition, if only powders with a high affinity are used, the pore diameter must be increased in order for water to flow into the pores formed between the powders, and if only powders with a low affinity are used. If so, the floor material is likely to be non-durable.

The present invention has been made in view of the problems of the prior art described above, and an object of the present invention is to provide a porous floor material that is resistant to clogging and resistant to slipping even under usage conditions where it is frequently wet. Another object of the present invention is to provide a porous floor material with excellent surface smoothness.

[Means to solve the problem]

The porous floor material of the present invention is characterized in that at least two types of powder particles having different compatibility with the synthetic resin during molding are combined by a synthetic resin that is in a powder state at room temperature.

The particle size of the above powdered synthetic resin is smaller than the particle size of the powder or granule with the highest affinity, and the particle size of the powder or granule with a lower affinity is equal to or less than the particle size of the powder or granule with a high affinity. There is.

Synthetic resins in powder form at room temperature (hereinafter referred to as resin powder) used in the present invention include thermoplastic resins such as polyvinyl chloride, nylon, polyethylene, polypropylene, fluorocarbon resins, phenolic resins, DAP prepolymers, polyimide resins, Examples include powders of thermosetting resins such as epoxy resins, and the names thereof such as thermoplastic resin powders and reactive resin powders do not matter.

The amount of resin powder is selected to be 5 to 95% of the total amount of the powdery material with high affinity and the powdery material with low affinity.

If the amount of resin powder is less than 5% by weight, the strength of the porous molded article,
The durability as a floor material deteriorates, and the amount of resin powder decreases to 9.
If it exceeds 5% by weight, a porous molded product cannot be obtained and the non-slip property when wet with water becomes poor.

In addition, granules include fillers such as heavy calcium carbonate and whitebait powder used in resin concrete, and JIS A 5
Structural lightweight concrete aggregate as specified in 002;
Also used are fiber reinforcing materials such as nylon fibers, vinylon fibers, glass fibers, metal fibers, and carbon fibers used in composite materials.

In regulating the particle size, the particle size of the resin powder should be smaller than the particle size of the powder or granule with greater affinity, and the particle size of the powder or granule with less affinity should be smaller than the particle size of the powder or granule with greater affinity. It is necessary to obtain a uniform structure during molding.

The powders and granules that have different affinities with the resin used in the present invention include powders of the same type that have been surface-treated to have different affinities, or those that have a maximum resin content per unit filling volume. There are products that are divided into different powders and granules.

The resin powder and two or more types of powder or granules having different affinities for the resin powder are bonded by mixing two or more types of powder or granules having different affinities for the resin powder, and then molding and heating the mixture.

[Effect]

When molding and bonding powdered resin and granular material as a floor material (during melting, reaction), two or more types of granular material with different compatibility with the powdered resin are mixed in the amount of resin. Since the resin is bonded with only a small amount, the resin melts and bonds well with powder and granules that have a high affinity, forming dense voids, and there is little bonding with powder and granules that have a low affinity, making it non-slip. This is preferable because it provides a floor material with a smooth surface.

The particle size (in the longitudinal direction if it has an aspect ratio) is defined as the particle size of the powder with high affinity > the particle size of the resin powder, and the particle size of the powder with high affinity ≧ the powder with low affinity. It is preferable to adjust the particle size of the particles to prevent bleed-out of particles with low affinity and to obtain a uniform structure.

〔Example〕

Two pieces of Madaragi vinyl chloride powder (manufactured by Tokuyama Sekisui), 30 μm glass milled fiber (silane treated), 100 μm glass milled fiber (untreated), and the amount of vinyl chloride powder was 80 μm of the total amount of both glass milled fibers.
Silanization of glass milled fibers in weight percent:
The ratio of untreated = 4:1 was adjusted, this mixture was mixed with a super mixer, and heated at 160'C with a hot press.
00 kg7cm! Heat molding was performed to combine the resin powder and powder to obtain a molded product.

2 pieces ■ Phenol resin powder (manufactured by Kanebo) 20 μ Shirasu powder 80 μ Sulfur silica powder 10 μ− Powder: 1R water silica powder = 3:1
The resin powder and the powder were combined in the same manner as in Example 1 to obtain a molded body.

, Demae JLL A molded body was obtained by bonding the resin powder and the granular material in the same manner as in Example 1 except that the silane-treated glass milled fiber was not used.

Fixture I A molded article was obtained by bonding the resin powder and the granular material in the same manner as in Example 1, except that the untreated glass milled fiber was not used in Example 1.

In place of the hydrophobic silica powder of 10 μm in main example 1,
A molded body was obtained by bonding the resin powder and the granular material in the same manner as in Example 1 except that 0 μ-hydrophobic silica powder was used.

A molded article was obtained by bonding the resin powder and the powder in the same manner as in Example 1, except that polypropylene was used instead of polyvinyl chloride.

Resin concrete was produced by the method described in Japanese Utility Model Publication No. 57-15308.

(Evaluation) Next, the molded product obtained as described above was measured for slip resistance, clogging resistance, and bending strength, and the results are shown in Table 1.

(1) Non-slip property when wet: Artificial leather test when flooring material gets wet based on JIS A 1407 (50 - x 301, load: 2 kg)
), and the results are shown as O if the friction coefficient is 0.8 or more, Δ if it is between 0.6 and 0.8, and × if it is less than 0.6.

(2) Disperse clogging talcum powder (particle size 108 m or less) in water at a rate of 2 g/cc, and sprinkle 50 cc of this dispersion onto a 100 mm x 100 water-permeable floor material at one end. Cases in which talc powder remains on the surface of the flooring material and can be washed away later are indicated by ○, and cases in which talc powder clogs the pores of the flooring material are indicated by x.

(3) Bending strength Measurement of bending strength was performed according to JIS K 7203. 1, O (
1m length does not break under its own weight on a cantilever), 1, 0 kg/
Those less than "w+m" are marked with "x".

(4) A sample with powder bleed out on the surface was graded as "×", and a sample without powder was graded as "O".

G1 [Effects of the Invention] As described above, the floor material of the present invention is porous with uniform distribution of pores, and when wet, water moves into the pores, reducing the water film on the surface. As a result, a floor material that is hard to clog and hard to slip is created. In addition, with the above structure, the resin powder melts (reacts) and the powder particles are uniformly bonded to form micropores, resulting in a floor material with excellent surface smoothness and excellent durability. is obtained.

[Brief explanation of drawings]

Figure 1 is an enlarged cross-sectional view of a part of the porous floor material manufactured by the method of the present invention, and Figure 2 is an enlarged view of a part of the porous floor material manufactured using only powder and granules with high affinity. The sectional view, FIG. 3, is an enlarged sectional view of a part of a porous floor material manufactured using only powder particles with low affinity. 1: Floor material, 2: Powder with high compatibility, 3: Powder with low affinity, 4: Resin, 5: Pore. that's all

Claims (2)

[Claims] (1) A porous floor material characterized in that at least two types of powder particles having different affinities during molding with the synthetic resin are combined by a synthetic resin that is in a powder state at room temperature. (2) The particle size of the powdered synthetic resin described in item 1 is smaller than the particle size of the powdery material with the highest affinity, and the particle size of the powdery material with the lowest affinity is smaller than the particle size of the powdery material with the highest affinity. A porous floor material characterized by having a particle size equal to or smaller than that of the granules.