JPH0941309A - Pavement tile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pavement tile which is light and excellent in abrasion- resistance, decoration, prevention against stains and which does not cause exfoliation between the top layer requiring a decorative property and the base layer requiring a strength and further, especially makes it possible to use waste materials of thermosetting resin. SOLUTION: This pavement tile is provided with the top layer 1 in which cured thermosetting resin particles, silica sand, and pigments are dispersed in cured epoxy resin and the base layer 2 backed with the top layer 1. Cured thermosetting resin particles are dispersed in the cured epoxy resin in the base layer 2. And a binder layer 3 made of unsaturated polyester is formed between the top layer 1 and the base layer 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement tile, and provides a pavement tile which can utilize a waste material which is a cured product of a thermosetting resin.

[0002]

BACKGROUND OF THE INVENTION Thermosetting resins, once cured, cannot be regenerated like thermoplastics. Therefore, defective products, sprues and runners that accompany molding have been discarded, but in recent years, from the viewpoint of environmental protection and effective use of resources, thermosetting There has been a strong demand for resin recycling.

In response to such demands, proposals have been made for use in, for example, cement aggregates and fillers. For example, a pavement tile in which granules obtained by crushing a hardened product of a thermosetting resin in a hardened product of cement are dispersed is known, but compared with a conventional cement-based pavement tile in which gravel is mixed,
There are few practical advantages in terms of quality and performance. That is,
Regarding weight, it is not particularly lightened, lacks cosmetic properties and stain resistance, and has low added value.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a pavement tile that is lightweight, has excellent cosmetic properties and stain resistance, and has improved abrasion resistance due to the use of a thermosetting resin. Therefore, it is a pavement tile that is manufactured by heat and pressure molding using a mold, and is a pavement tile that prevents delamination between the top layer that requires cosmetic properties and the base layer that requires strength. It is intended to provide a paving tile that can utilize a waste material of a curable resin.

[0005]

A pavement tile according to claim 1 of the present invention comprises a top layer 1 in which particles of a thermosetting resin, silica sand and a pigment are dispersed in a cured epoxy resin, and this top layer. 1. A base layer 2 backing 1 is formed, and the base layer 2 is composed of a cured epoxy resin and particles of a thermosetting resin dispersed therein, and a binder layer between the top layer 1 and the base layer 2. 3 is formed, and this binder layer 3 is made of unsaturated polyester, and the binder layer 3 made of unsaturated polyester prevents delamination of the top layer 1 and the base layer 2 backing the top layer 1.

The paving tile according to claim 2 of the present invention is the paving tile according to claim 1, and is characterized in that the thermosetting resin is a melamine resin.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The pavement tile of the present invention comprises a top layer 1 in which particles of a thermosetting resin, silica sand and a pigment are dispersed in a cured epoxy resin, and a base layer 2 lining the top layer. The base layer 2 is formed by dispersing particles in which a thermosetting resin is cured in a cured epoxy resin, and the top layer 1 is a matrix in which particles in which an epoxy resin and a thermosetting resin are cured are used as a matrix. The matrix disperses pigments for excellent cosmetic and stain resistance, and this matrix has silica sand for excellent abrasion resistance. In addition, the top layer 1 and base layer 2 are made of unsaturated polyester. Since it is integrated by the binder layer 3 which is made of, the delamination between the top layer 1 and the base layer 2 is eliminated.

The matrix resin in which the particles obtained by curing the thermosetting resin are dispersed is
Although it has low abrasion resistance, it is an epoxy resin with high water repellency. Therefore, the binder medium of the particles cured by the thermosetting resin is the epoxy resin, and the curing reaction proceeds only at the stage of molding the paving tile. The curing agent may be either a novolac type phenol resin or a resol type phenol resin, and an imidazole compound is used as a curing aid.

At this stage of the curing reaction, the particles obtained by curing the thermosetting resin have already completed the curing reaction, and a waste material of the thermosetting resin can be applied. As the waste material of the thermosetting resin, for example, hardened waste material such as melamine resin, epoxy resin, and phenol resin can be used. The particle size of the particles varies depending on the method of producing the pavement tile, but the pavement tile of the present invention formed by heating and pressurizing using a mold requires a high fluidity, so 20 mesh or less is suitable. In this case, 90 to 95% by weight is preferable with respect to the top layer 1.

Further, the silica sand dispersed in the above epoxy resin is for increasing the abrasion resistance of the entire surface of the tile, so a considerable amount is required. In heat and pressure molding using a mold, 60 to 93% by weight is an appropriate amount.

Further, a pigment that enhances the cosmetic effect is dispersed in the epoxy resin that is the matrix resin that has been cured for the first time in the molding stage. When the pigment is 0.5% by weight or less based on the total weight of the top layer 1, the pigment exerts a sufficient coloring effect and enhances the scenery of the cityscape.

The pavement tile of the present invention comprises a base layer 2 lining the top layer 1 described above. The base layer 2 is composed of particles obtained by curing a thermosetting resin in a cured epoxy resin, and there is essentially no difference from the composition of the top layer 1, but the base layer 2
Since cosmetic properties are not required, the amount of particles produced from a waste material obtained by curing a thermosetting resin as an extender can be increased more than that of the top layer 1. As the waste material of the thermosetting resin, hardened waste material such as melamine resin, epoxy resin, and phenol resin can be used similarly to the top layer 1. Since the base layer 2 is not required to have abrasion resistance and cosmetic properties, it does not matter whether silica sand or pigment is used, but it is required to have high flex resistance due to the necessity of reinforcing the top layer 1.

Further, a binder layer 3 is formed between the top layer 1 and the base layer 2, and the binder layer 3 is made of unsaturated polyester. For the unsaturated polyester forming the binder layer 3, particles made from a hardened waste material such as a melamine resin, an epoxy resin, and a phenol resin can be used as an extender as the extender, as in the base layer 2. About 90% by weight is suitable for the binder layer 3.

Even if the thickness of the binder layer 3 is considerably smaller than that of the top layer 1 and the base layer 2, it is effective in preventing interlayer separation. Therefore, it is not necessary to use a release agent in the binder layer 3. However, addition of a release agent such as zinc stearate to the top layer 1 and the base layer 2 is effective in improving moldability.

[0015]

According to the pavement tile of the present invention, a top layer 1 in which particles of a thermosetting resin, silica sand and a pigment are dispersed in a cured epoxy resin, and a base layer 2 lining the top layer 1 are provided. The base layer 2 is formed by dispersing particles in which a thermosetting resin is cured in a cured epoxy resin, and further, a binder layer 3 is provided between the top layer 1 and the base layer 2.
The binder layer 3 is made of unsaturated polyester, is lightweight, has excellent cosmetic properties and stain resistance, and has improved abrasion resistance due to the use of thermosetting resin. A tile, which is a pavement tile manufactured by heat and pressure molding using a mold, in particular, a waste material of a thermosetting resin can be used, and a binder layer 3 made of unsaturated polyester is a top layer 1, Also, delamination of the base layer 2 lining the top layer 1 is prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a paving tile according to an embodiment of the present invention.

[Explanation of symbols]

 1 Top layer 2 Hase layer 3 Binder layer

Claims (2)

[Claims] 1. A top layer (1) in which particles of thermosetting resin, silica sand and pigment are dispersed in a cured epoxy resin, and a base layer (2) backing the top layer (1) are provided. , The base layer (2) is composed of cured epoxy resin and particles of a thermosetting resin dispersed therein, and further the top layer (1)
A binder layer (3) is formed between the base layer and the base layer (2), and the binder layer (3) is a paving tile made of unsaturated polyester. 2. The paving tile according to claim 1, wherein the thermosetting resin is a melamine resin.