KR960013249B1 - Resin composition - Google Patents

Abstract

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Description

Resin composition

TECHNICAL FIELD The present invention relates to a resin composition used as a coating material, a coating material, other coating materials and an adhesive.

Conventionally, the epoxy resin resin composition which mix | blended silica sand, sand, etc. as a coating material, such as a braid, has been mainly used.

However, epoxy resin-based coating materials have problems such as poor adhesive strength and compressive strength or complexity of preparation during coating.

For example, when the epoxy-based conductive material is applied to a concrete floor, particularly a rough concrete floor surface, the coarse roughness is likely to break the concrete surface. Therefore, the volume of the epoxy resin shrinks after curing, so that the concrete surface itself is peeled off from the sphere. As a result, the icon is peeled from the concrete.

Further, when the epoxy coating material is applied to a glass tile having a smooth surface, when the coated surface is exposed for a long time under high humidity conditions, the adhesive force is lowered due to the volume shrinkage of the epoxy resin after curing, and as a result, the resin is peeled off.

Japanese Patent Application Laid-Open No. Hei 1-9275 describes an anti-slip material formed by blending an anti-skid powder containing aggregate and hydraulic cement and a resin emulsion containing an acrylic resin. However, this document does not suggest that such coatings could be applied for applications other than anti-slip agents, and there is no mention of using garnets as aggregates incorporating certain cements.

Japanese Patent Application Laid-Open No. 63-308078 describes a waterproof membrane in which fine powder inorganic substances such as potassium carbonate, talc powder, glass beads, silica powder, titanium dioxide, and the like are dispersed.

Japanese Patent Application Laid-Open No. 1-153583 describes applying a slurry produced by adding water to a mixture of Portland cement, titanium dioxide and an acrylic resin powder as a primer to a cement structure.

Japanese Patent Laid-Open No. 1-297485 discloses an acrylic resin-based sealing material composed of acrylic resin, ammonia, zinc oxide and calcined alumina.

Japanese Patent Application Laid-Open No. 1-297479 discloses a caking agent composed of an acrylic resin, ammonia, zinc oxide, potassium carbonate and ethylene glycol monobutyl ether.

Japanese Patent Laid-Open No. 2-30648 describes the development of an additive consisting of an aqueous emulsion, an antifoaming agent and an antirust agent of an acrylic copolymer, which is added to cement, concrete or mortar to improve strength and provide water resistance. have.

Japanese Patent Laid-Open No. 2-29467 discloses acrylic resins, antifoaming agents, flow wetting agents, in-can preservatives, anti-molding agents, pigment dispersants, inorganic materials, dring and coalescing agents, and A paint for monolithic acrylic finishes consisting of water is described.

SUMMARY OF THE INVENTION An object of the present invention is to fully consider the drawbacks of the prior art and to provide a resin composition having strong adhesiveness, excellent compressive strength, and excellent other properties such as wear resistance.

In this invention, the said objective is achieved by the resin composition which consists of an aqueous emulsion of an acrylic resin, aggregate, and hydraulic cement.

The resin composition of this invention adheres well to a to-be-coated surface, and shows the outstanding compressive strength, abrasion resistance, and water resistance. Moreover, since the resin composition of this invention is a resin composition, it is convenient to use, and a coating film shows slipperiness | lubricacy. In addition, since a coating film is formed on the concrete surface, neutralization of the concrete is prevented. When the resin composition of this invention is apply | coated to metal surfaces, such as iron, an antirust effect can be acquired.

As aggregate, granular materials such as garnet, quartz, silica sand, copper slag, zirconium, granulelite, ceramics, glass, and the like are used, and an average particle diameter is 50 to 1500 µm. It is especially preferable to use garnet among the above aggregates.

As hydraulic cement, portland cement, fly ash cement, silica cement and blast furnace cement may be used.

Although hydraulic cement does not consist solely of oxides, in view of the composition of the oxides, compositions containing oxides of the following compositions are particularly suitable.

Silicon dioxide (SiO ₂ ) 20-25 wt%

Aluminum oxide (Al ₂ O ₃ ) 8-12 wt%

Ferric Oxide (Fe ₂ O ₃ ) 0.09 ~ 0.11%

Calcium Oxide (CaO) 59 ~ 65 Weight

Magnesium Oxide (MgO) 0.8 ~ 1.0 wt%

Sodium oxide (Na ₂ O) 0.09 to 0.11 wt%

In general, such cement contains about 1.7 to 1.75% by weight of sulfur trioxide (SO ₃ ). Thus, by mix | blending the cement which has a specific composition with garnet as aggregate, the characteristic, especially adhesiveness, and compressive strength of the resin composition after hardening can be improved.

Examples of the acrylic resin emulsion include homopolymers or copolymers of acrylic monomers such as acrylic acid, methacrylic acid or esters thereof, copolymer resins of other monomers copolymerizable with styrene, and the like.

If desired, the aqueous emulsion of the resin composition of the present invention may contain synthetic resins such as styrene-butadiene rubber latex, polyvinylacetate, ethylene and vinyl acetate polymers, or additives such as emulsifiers, colorants, antifoaming agents and the like.

The resin composition of the present invention may be used as a mixture of aggregate, cement and an acrylic resin emulsion, or a premix of aggregate and cement may be mixed as a powder. It can also be combined with colorants and other additives.

Aggregate is preferably mixed at 0.8 to 1.2 parts by weight based on 1 part by weight of cement.

It is preferable that a synthetic resin emulsion contains 28-36 weight% of acrylic resin as solid content. For example, a resin composition is manufactured by mixing 200-260 ml of such aqueous emulsions with respect to 1 kg of powders (cement + aggregate).

A resin composition prepared by uniformly mixing the aggregate, hydraulic cement, and an aqueous emulsion of an acrylic resin is applied as a coating material, and cured to form a coating film.

The resin composition of the present invention mainly acts as a surface protective agent, an anti-slip agent, an anti-wear agent, an anti-neutralization agent of concrete, a rust preventive agent, an adhesive, and the like.

In addition, the resin composition of the present invention is a surface finishing material of floors and walls of buildings, such as processes, warehouses, buildings, shower rooms, kitchens, pools, stairs, decks of ships, driveways, sidewalks, signs of dominant wavelengths, traffic signs on roads. It is used as a coating material such as a line on a sidewalk, an outline on the surface of a parking lot, and the like.

EXAMPLE

In the composition described below, 1 kg of powder (a) was mixed with 225 ml of an acrylic resin emulsion (b) to obtain a creamy emulsion. The emulsion was applied to the concrete surface with a brush in a thickness of 0.5 to 1 mm and cured for 2 weeks.

The coating film was strongly adhered to the concrete surface and had a compressive strength of 419 kgf / cm 2 as measured by JIS Standars R5201.

In addition, the said composition was apply | coated to mortar, a steel plate, a glass plate, a plywood, etc. in the same way, and it hardened. In all cases, the coating film showed excellent adhesion to the substrate.

(a) powder composition

Garnet 48.6 wt%

51.4 wt% cement

Composition of cement

Ignition loss 1.9 wt%

Silicon dioxide 22.9 wt%

9.9 wt% aluminum oxide

Ferric Oxide 0.1 wt%

Calcium Oxide 62.5 wt%

Magnesium Oxide 0.9 wt%

Sodium oxide 0.1 wt%

Sulfur trioxide 1.7 wt%

(b) acrylic resin emulsion composition

Acrylic resin 32.1 wt%

67.9% by weight of water

Claims (2)

(a) an aqueous emulsion containing 28 to 36% of an acrylic synthetic resin as a solid, (b) a garnet as aggregate, and (c) 20 to 25% by weight of silicon dioxide, 8 to 12% by weight of aluminum oxide, and 0.09 to 0.11 of ferric oxide. It is composed of hydraulic cement consisting of weight%, 59-65% by weight of calcium oxide, 0.8-1.0% by weight of magnesium oxide, 0.09-0.11% by weight of sodium oxide, and 1 kg of a mixture of cement and aggregate in 200-260 ml of the aqueous emulsion. A resin composition characterized by mixing at a ratio. The resin composition of Claim 1 which mixes 0.8-1.2 weight part with respect to 1 weight part of said cement.