JPS5848514B2 - block plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat block plate used for paving roads, parks, sports facilities, parking lots, bicycle parking lots, etc., and for indoor floors.

Generally, the flat blocks used for the above purpose are made by heating and molding aggregate using cement concrete or thermoplastic materials such as asphalt or petroleum resin as a binder, but it is common that no particular surface treatment is performed. If coloring is required, the purpose is achieved by mixing and adding pigments before molding.

However, even if pigments are added to cement concrete slabs for the purpose of coloring them, it is difficult to obtain highly vivid colors.

Furthermore, in the case of blocks using asphalt as a binder, the colorability is very poor because the asphalt itself is black.

When a thermoplastic resin such as a petroleum resin is used as a binder, the colorability is considerably improved, but the price of the binder is considerably higher than that of asphalt, so the block has to be expensive.

For this reason, a method of covering the surface of a block molded using asphalt as a binder with a colored mixture using petroleum resin or the like as a binder with good coloring properties is also used, but it is a method that is time-consuming but provides vivid colors. is difficult to obtain.

In addition, these blocks generally have a water-absorbing property, and when soaked in water, water may be absorbed and the surface may bleed, or the absorbed moisture may freeze in the winter, causing the block to break.

In addition, block flat plates manufactured using thermoplastic resins such as asphalt or petroleum resin as a binder have low oil and chemical resistance, and cannot be used in locations where they may come into contact with gasoline, kerosene, or chemicals.

The present invention has been made to overcome the above-mentioned problems with conventional block plates.

That is, after forming the block flat plate, the present inventor added dyes, pigments, crushed stone, sand, colored sand, porcelain colored crushed stone, brick powder, etc. to the surface of the block plate, or to the curable composition as necessary. By applying a surface treatment consisting of applying a mixture of rubber powder, stone powder, glass microspheres, etc. to an appropriate thickness, we can improve the colorability, waterproofness, oil resistance, chemical resistance, etc. of block flat plates as described above. They found that they could not only solve this problem, but also significantly improve the slip resistance and walking sensation of the block surface.

Here, the hardenable composition is (4) an extract of lubricating oil fraction of petroleum with a saturated content of 10 wt% or less, or a heavy fraction of naphtha reformate or petroleum oil. Component catalytic cracking residual oil or naphtha thermal cracking residual oil with a CA value of 4 in the ratio of aromatic carbon to total carbon.
0% or more, (E9 refers to an aminopolyamide curing compound that is liquid at room temperature, (C) a curable composition made of an epoxy resin.

The composition has the excellent adhesiveness, mechanical strength, oil resistance, and chemical resistance that epoxy resins have, and is more flexible and less expensive than epoxy resins.

The extract of the lubricating oil fraction of petroleum refers to an extracted component obtained by extracting the petroleum fraction with a solvent such as furfural that has selective solubility for aromatic compounds for the purpose of producing lubricating oil.

The heavy fraction of naphtha reformed oil is the heavy fraction produced when naphtha is reformed using a catalyst such as platinum after catalytic hydrodesulfurization for the purpose of gasoline production. .

Catalytic cracking residual oil of petroleum components is the residual oil produced by fluid catalytic cracking of vacuum gas oil, atmospheric gas oil, slack wax, naphtha cracking residual oil, etc. using a silica-alumina catalyst for the purpose of producing LPG, cracked gasoline, etc. Refers to the residual oil produced in

Naphtha pyrolysis residual oil is used for the purpose of producing ethylene.
This is the residual oil produced during high-temperature pyrolysis of naphtha.

The saturated content of the extract refers to the component that elutes first when the extract is developed and eluted using n-pentane in a two-layer column chromatography consisting of silica gel and alumina gel. The CA value, which indicates the ratio of aromatic carbon to total carbon in the heavy fraction of reformed naphtha oil, catalytic cracking residual oil, and thermal cracking residual oil, is calculated from the results of elemental analysis and proton NMR analysis. It is the ratio of aromatic carbon to total carbon expressed as a percentage.

(J.K. Brown and W.R.
．． Ladner+ Fuel, 3 9, 87~
96 (1960)).

When extracts with a saturated content exceeding 10 wt% or heavy fractions of naphtha reformed oil or cracked residual oils with a CA value of 40% or less are used, the composition is difficult to harden, and even if hardened, However, a cured product with the expected performance cannot be obtained.

The aminopolyamide resin refers to a commercially available so-called polyamide curing agent that is a condensation product of polyamines and fatty acids.

Although there are no restrictions on the epoxy resin, liquid bisphenol type, aliphatic polyglycidyl ether type, and polyhydric alcohol polyglycidyl ether type epoxy resins are particularly preferred.Dye and pigments are dispersed in the curable composition. Any material can be used as long as it has properties or solubility.

When carrying out the present invention for the purpose of improving the waterproofness of the block surface, the curable composition may be applied to the block surface while it is uncured using a brush, spatula, trowel, spray, etc.

When the purpose is to color the composition, a dye or pigment is mixed into the curable composition and then applied.

In either case, the thickness of the coating film can be controlled by selecting the curable composition with an appropriate viscosity so long as it is less than 1.5 mm thick in one application.

If a thicker coating is required, silica sand powder or the like may be added.

If a flat block plate with high surface slip resistance is required, apply a mixture of the curable composition and appropriate amounts of crushed stone, sand, colored sand, brick powder, rubber powder, etc. of appropriate particle size, or After applying only the curable composition and while uncured,
The purpose can also be achieved by scattering the crushed stones and the like and fixing them on the surface.

When glass microspheres are used instead of crushed stone, the surface of the block plate has a beautiful appearance similar to that of polished pottery.

Examples of the present invention are shown below.

In the example sentences, parts mean parts by weight.

Example 35 parts of No. 4 silica sand, 37 parts of No. 6 silica sand, 20 parts of silica sand stone powder (passed through 60 mesh), straight asphalt (softening point 7)
8 parts (0°C) were heated and mixed and pressure molded at a pressure of 50 kg/7 to form a product with a width of 12 cIrL, a length of 24 crIL, and a thickness of 2
．． A 5 cm block flat plate was manufactured using bisphenol A epoxy resin (viscosity at 25°C: 2200
cps, epoxy equivalent 192) and 100 parts of an extract obtained by furfural extraction treatment of a lubricating oil fraction (viscosity at 25°C: 3,100 cps) to form a liquid A, and an aminopolyamide curing agent (viscosity at 25°C: 2600 cps) as liquid B, 100 parts of liquid A and 25 parts of liquid B were mixed to prepare a curable composition.

While the composition was still uncured, 2 parts of red pepper was added as a pigment to 100 parts of the composition and mixed thoroughly, and then a rubber spatula was applied to the two block flat plates so that the coating thickness was about 1.5 mm. It was applied using.

Before the coating material hardened, 20 g of spherical glass microspheres passing through 60 mesh were sprinkled onto one of the sheets.

The next day, the composition was sufficiently cured, and the surface of the block plate was colored a highly saturated red.

In particular, the surface of the material sprinkled with glass microspheres has an appearance similar to that of ceramics, and can be used as a building material for residences to achieve a beautiful effect.

Claims (1)

[Claims] 1(A) Extract of petroleum lubricating oil fraction with a saturated content of 10'wt% or less, or heavy fraction of naphtha reformate or catalytic cracking residue of petroleum components, or Naphtha pyrolysis residual oil in which the ratio of aromatic carbon to total carbon is 40% or more in CA value, (B
) A curable composition consisting of an aminopolyamide resin that is liquid at room temperature, (C) an epoxy resin, or, if necessary, dyes, pigments, crushed stone, sand, colored sand, porcelain colored crushed stone, brick powder, A flat block plate whose surface has been treated with a mixture of one or more of rubber powder, stone powder, and glass microspheres.