KR0145117B1 - Epoxy resin mortar - Google Patents

Abstract

The present invention relates to a method for constructing an epoxy resin mortar, and more particularly, an epoxy resin mortar composition and natural stone or artificial silica sand are blended and laid thereon, and then pressed and cured to form a cohesive molding material having an epoxy resin as a base resin. The present invention relates to an epoxy resin mortar construction method capable of filling a surface void only to a certain thickness to apply a flat or embossed state to improve aesthetics.

Description

Epoxy Resin Mortar Construction Method

The present invention relates to a method for constructing an epoxy resin mortar, and more particularly, an epoxy resin mortar composition and natural stone or artificial silica sand are mixed and laid thereon, and then coated with a cohesive molding coating material with epoxy resin as a base resin on the surface layer which is pressed and cured. The present invention relates to an epoxy resin mortar construction method capable of filling a surface void only to a certain thickness to have a flat or embossed state to improve aesthetics.

Resin mortars generally used are based on epoxy resins, and when constructing epoxy resin mortars composed of such compositions, they are laid and then filled with voids. When the resin mortar is constructed in this manner, the finishing state is not precise and not only coarse, but even though the epoxy resin is expensive, it must be used in large quantities, so it has been constructed regardless of aesthetics when high strength and impact resistance are required.

The reason why it had to be aesthetically coarse was to fill the pores in order to maintain high strength after plastering with a certain thickness, but the epoxy resin itself is a self-leveling type, which is easy to produce and manufacture. This is because it had no choice but to marry the silica.

In addition, the self-leveling type could not make the resin surface on the horizon and the surface of the resin mortar evenly match, so it could not make use of the sophistication and aesthetic sense.

On the other hand, in recent years, various tiles are used for interior and exterior floors and wall surfaces, and stone marble is mainly used. These products are excellent in weatherability, durability and abrasion resistance, and they have long-established traditions.However, the conventional resin mortar application method is the method of construction of resin mortar for the modern people who pursue a new sense of aesthetics by changing the living environment with high industrialization. You cannot meet the same needs.

Accordingly, the present inventors endeavored to solve the problems of the conventional resin mortar construction method as described above, and the conventional epoxy resin mortar composition and natural stone or artificial silica sand are mixed and laid, and then pressed and cured to form a cohesive molding coating material. The present invention has been completed by filling up.

An object of the present invention is to provide a method for constructing an epoxy resin mortar, which improves aesthetics and has excellent durability and impact resistance by filling the surface layer with a cohesive molding coating material after construction of the epoxy resin mortar.

Hereinafter, the present invention will be described in detail.

The present invention is a method for constructing an epoxy resin mortar formed by mixing an epoxy resin as a base resin and adding additives such as a curing agent, a curing accelerator, and a pigment to the epoxy resin mortar composition, wherein natural stone or artificial silica sand is blended and laid. After pressing and curing and curing, the surface layer is characterized by filling a cohesive molding coating material in a predetermined thickness.

The cohesive molding coating material is composed of 70 to 80% by weight of epoxy resin, 3 to 5% by weight of plasticizer, 4 to 5% by weight of plasticizer, 14 to 16% by weight of non-reactive diluent and 0.05 to 0.1% by weight of antifoaming agent. It is also characterized by the use of a composition comprising 100 parts by weight and 50 parts by weight of a curing agent composed of 50 to 60% of a curing agent, 7 to 15% by weight of a resin adduct and 25 to 33% by weight of an accelerator.

The present invention will be described in more detail as follows.

The present invention relates to a method for constructing an epoxy resin mortar that can improve aesthetics by using a cohesive molding coating material after construction of epoxy resin mortar and can be variously used depending on the use. The resin mortar used in the present invention is conventional Looking specifically at the composition;

First composition consisting of 85 to 90 wt% epoxy resin, 5 to 10 wt% reactive diluent, 2 to 4 wt% plasticizer, 0.05 to 0.1 wt% leveling agent, 0.05 to 0.1 wt% antifoaming agent and 0.8 to 1.3 wt% sunscreen 100 parts by weight with respect to 50 parts by weight of the second composition consisting of 55 to 65% by weight of the curing agent, 7 to 15% by weight of the resin adduct and 27 to 40% by weight of the accelerator, and 1 to 3 parts by weight of the inorganic pigment or the organic pigment.

Next, 100 parts by weight of the epoxy resin composition and 500 to 1000 parts by weight of natural or artificial stone are mixed and stirred.

Then, it is laid on the concrete surface with a thickness of 2 to 15 mm and pressed and plastered.

On the other hand, when it is installed on the wall surface is installed in 2-3mm thickness and crimped plastering.

Here, the structural formulas of the epoxy resin intermediates used in the epoxy resin mortar composition and the aggregation type coating material are as follows.

Where n = 0.

In the structural formula of the epoxy resin intermediate used in the present invention, n = 0 is because the epoxy resin used in the production of the epoxy resin mortar should be a liquid phase, if it is not n = 0, it becomes a solid resin phase.

In addition to the above epoxy base resins, a small amount of isopropylene thiphenol glycidyl ether may be mixed and used.

As the reactive diluent, a monomolecular type having an epoxy group, polypropylene glycol diglycidyl may be used alone or in a 1: 1 mixture with high butylglycidyl ether.

The plasticizer is used to increase the plasticity or stability of the physical properties. The leveling agent is a polysiloxane-based high boiling point solvent mixed with an ester. The surface leveling is good, and the amine is not compatible with the surface of the resin. It is possible to promote adhesion during recoating by preventing the phenomenon of floating up according to the change, that is, the amine brush phenomenon.

The antifoaming agent is a polysiloxane-based series to prevent the formation of the composition or bubbles, and as the sunscreen, for example, poly-[(6-morpholino-S-triazine-2, 4-diyl)-(2, 2, 6, 1-tetraethyl-4-piperidyl) imino-hexamethylene- (2, 2, 6, 6-tetramethyl) -imino] is used.

If the content of each component of the first composition in the epoxy resin mortar composition having such a composition is less than the above range, the formation itself is not formed, and when used in excess of the above content, not only the compatibility in the composition is low, but also the hardness and tension Physical properties are deteriorated, such as a decrease in strength, flexural strength and compressive stress.

In addition, a pigment may be added in the first composition of the epoxy resin mortar, which is used in an amount of 1 to 3 parts by weight as an inorganic or organic pigment. If the compatible amount of the pigment is less than 1 part by weight, it becomes translucent and if it exceeds 3 parts by weight, it becomes opaque.

The inorganic pigments may be 0.2 ~ 0.4mμ in size, and larger ones such as 25mμ in size. Specific examples include chromium (green), cadmium (red), titanium dioxide or chromates. , Ferrocyanides (blue), Sulphide, Oxides, Silicates, Carbon Black.

Such pigments can be changed in color by applying coprecipitation with several metals.

As the organic pigment, various kinds of conventional pigments, including phthalocyanine, may be used, and in particular, a quinacridine pigment may be used alone or in combination with the inorganic pigment.

On the other hand, in the composition of the curing agent which is the second composition of the epoxy resin mortar composition, the curing agent used is polyoxypropylene amine which is an amine curing agent, and the resin adduct agent uses the epoxy base resin described above, and the curing accelerator has no molarity. Use nonylphenol. In this case, nonylphenol, which is not molar, is used as a curing accelerator to reduce the aging phenomenon caused by yellowing or ultraviolet rays due to heat generation during curing.

In addition, as a curing accelerator, it is used to adjust the piperazine-based mixture modified amine by 5 to 10% by weight according to the temperature variation, less than 10% by weight at 10 ℃ or less, 5% by weight at 20 to 30 ℃. desirable.

On the other hand, in order to fill the pores after the construction of the resin mortar as described above, in the present invention, the cohesive molding coating material is coated on the surface after the construction of the resin mortar.

Conventionally, in order to prevent flowability in general paint products, silicon dioxide based on the tooth (thiso) has been used as a raw material, it has a characteristic that is difficult to use as a two-component resin, especially epoxy-based molded product raw materials.

And, in order to have high viscosity cohesiveness, a large amount must be added, and thus, it is difficult to have the desired physical properties of epoxy.

Therefore, the coagulant molding agent of the present invention adds a small amount of a plasticizer to the main component to give physical properties out of the flow state, and adsorbs the curing agent at 70 ° C. with the epoxy base resin, and naturally absorbs moisture in the air.

Here, the composition of the cohesive molding coating material is divided into a main material and a hardener component, the main material is 70 to 80% by weight epoxy resin, 3 to 5% by weight plasticizer, 4 to 5% by weight plasticizer, non-reactive diluent 14 ~ 16 weight% and antifoaming agent 0.05 to 0.1 weight%.

And a hardening | curing agent component consists of 50 to 60 weight% of hardening | curing agents, 7 to 15 weight% of resin adads, and 25 to 33 weight% of accelerators.

100 parts by weight of the main material as described above and 50 parts by weight of a curing agent are mixed, and 0.5 to 1.0% by weight of diethylenetriamine or triethylene tetraamine is added and mixed to make cohesive and then coated on a mortar surface layer.

Here, the epoxy resin as a base in the main composition is represented by Structural Formula (1), and a part of the epoxy base resin containing chlorine is mixed therein. At this time, epoxy base resin containing chlorine plays a part in making cohesive.

As the plasticizer, dibutyl phthalate is used, which gives plasticity but promotes cohesiveness when diethylenetriamine or triethylenetetraamine is added as a nonvolatile type.

In addition, as the dentifrice, silicon oxide alone or Calibria asbestos is mixed in a 1: 1 ratio to give plasticity to the resin. When milling (milling) to determine the degree of compression to be careful not to reduce the plasticity, and vacuum degassing should be used to remove the bubble.

Xylene is used as a non-reactive diluent, which has high volatility and dissolvability in the branched molding type, so it has high stability in physical properties, good hygroscopicity and compatibility with the plasticizer, and further increases plasticity.

As the antifoaming agent, a polysiloxane mixture is used, which is a highly foamable antifoaming agent, which prevents foaming in the resin.

In the composition of the cohesive molding coating material, the composition of the curing agent is polyoxypropyleneamine, which is an amine curing agent, as the curing agent, the resin adduct is an epoxy base resin, and the curing accelerator is a tertiary amine mixture and a nonylphenol. The nonylphenol accelerator is a type that can not be moles and is used to reduce yellowing or aging during the heating of the reaction.

In addition, in the present invention, the adduct worshiping temperature in the method of advent hardening in the present invention is suitable for starting the reaction at 60 ° C. and absorbing moisture while lowering the rising temperature, so that triethylenetetraamine or diethylenetriamine may be added during use. React and have a strong cohesion.

If the content of each component in the composition of the cohesive molding coating as described above is less than the content is not formed of the composition, if the content exceeds the properties of the physical properties are weakened.

On the other hand, in the construction of epoxy resin mortar, 10 to 20 parts by weight of natural stone silica sand or artificial stone pieces with a particle size of 0.1 to 5 mm by mixing the epoxy resin mortar composition as described above in the usual manner, and then coated with epoxy primer Lay 0.3 to 15mm thick on the surface, and then apply it by mechanical pressure plastering or by hand.

Then, the main material of the cohesive molding coating material and the curing agent are mixed in a weight ratio of 100: 50 to the surface layer on which the epoxy resin mortar is cured, and then 0.5 to 1.0% by weight of triethylenetetraamine is added and stirred to have strong cohesiveness. This is poured into a mortar surface layer and evenly spread using a rubber hera, and then rolled using a nonwoven roller to have a finely embossed surface layer. The surface may be represented in various shapes depending on the shape of the nonwoven roller.

In this finished state, each acid-resistance, weather resistance, abrasion resistance, impact resistance, etc. can be given to the application, and the top coat can be treated thinly.The top coat is only epoxy type, urethane, or urethane-based acrylic blended type only. Adhesion is smooth.

As described above, when the epoxy resin mortar is constructed, the physical properties are excellent, the appearance is beautiful and the chemical resistance is excellent, and thus it can be used more effectively than the conventional mortar construction method.

Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited by the Examples.

[Production Example 1]

Epoxy Resin Mortar Composition

In the composition,

(1) Epoxy base resin: Condensation product of epichlorohydrin and bisphenol A, a sticky liquid, epoxy equivalent of 190 to 195, abutment (25 ° C) 2,500 to 3,000 centipoise, color (transparent) resin (gardner) Kukdo Chemical's 0.5 Max, specific gravity (20 ℃) is 1.17, refractive index (20 ℃) is 1.5713.

(2) Reactive diluent: polypropylene glycol diglycidyl, Japan Dowha Chemical

(3) Plasticizers: dibutyl phthalate, Aekyung oil and fat products

(4) Defoamer: Polysiloxane compound, Germany BYK

(5) Leveling agent: Polysiloxane-based mixture, manufactured by BYK of Germany

(6) UV inhibitor: UV-3346, manufactured by Cyanamide, USA

(7) Curing agent: Polyoxypropylene amine, manufactured by Texark, USA

(8) Resin adduct: Basic epoxy resin, YD-128, Kukdo Chemical

(9) Nonyl Phenolic, Product from Wakasa, Italy

(10) Piperazine Mixture, manufactured by Texark, USA

The first composition [viscosity (20 ° C.) 3,000 cps, specific gravity 1.22] and the second composition [viscosity (20 ° C.) 350 cps, specific gravity 1.13] are mixed in a weight ratio of 100: 50, and the pigment is mixed in an amount of 1 to 3 parts by weight. To obtain an epoxy resin mortar composition.

In the composition

(11) Basic resin: A sticky liquid as a condensation product of epichlorohydrin and bisphenol A. Epoxy equivalent of 184 to 190, viscosity (25 ℃), 2,000 to 2,500 cps, color semitransparent resin (gardner) 0.5Max, specific gravity (20 ℃) 1.15, refractive index (20 ℃) of 1,5710 Kukdo Chemical.

(12) Medium viscosity type containing chlorine. YD-115CA, Kukdo Chemical

(13) silicon dioxide or RG-244

(14) xylene

The main material [viscosity (20 degreeC) 2,500 cps, specific gravity 1.2] and the hardening | curing agent [viscosity (20 degreeC) 350 cps, specific gravity 1.13] are mixed by weight ratio 100: 50, and 0.5-1 g of triethylene tetraamine is added here, and it is cohesive A molding coating material was obtained.

EXAMPLE

First, after curing the concrete for 15 days or more at room temperature but with a water content of 8% or less, or concrete surface strength of 180 or more, remove contaminants, irregularities and latans on the surface. Apply 0.2 to 0.3 ㎏ based on 1㎡ to penetrate evenly using rollers.

After confirming that the primer was cured, the resin mortar layer prepared according to the above 1 was prepared to be thinned to a thickness of 0.2 to 0.3 mm on which the primer was applied, and then selected from natural stone (silica sand) or artificial stone (color silica sand). Stone carving: Mixing and stirring so that the ratio of the resin mortar composition of Preparation Example 1 was 100: 10 to 20% by weight, the pressure was laid in a prescribed thickness.

Although the curing time is re-workable, the dry touch time is 8 to 12 hours at 20 ° C., but the curing dry state should be checked and the cohesive molding coating material prepared according to Preparation Example 2 after the inspection is finished, as described above. After checking, the surface layer was thinly spread using a rubber hera, and then finished by rolling with a nonwoven roller.

Experimental Example

After the construction of the resin mortar according to the above embodiment, the specimen was taken from the core by floating the core, and the hardness, tensile strength, flexural strength, compressive stress, heat deformation temperature, and water absorption were measured, and the appearance was observed.

Here, the hardness is Rockwell hardness, the result is 80 ~ 90 (M-scale), the tensile strength was measured according to JIS K 6911 and the result is 350 ~ 380 kg / ㎠.

The flexural strength was measured by ASTM D 790 and as a result was 550-600 kg / cm 2, and the compressive stress was measured by ASTM D 695 method, and the result was 340-400 kg / cm 2.

The heat deflection temperature was measured by ASTM 648. The result was 95 ° C., and the heat of absorption was measured according to JIS K 6911. The result was 0.2%.

On the other hand, the appearance is beautifully coated with a uniform thickness, the shape of the surface changes according to the roller shape.

Claims (3)

In the method of constructing an epoxy resin mortar made of an epoxy resin as a base resin and mixing additives such as a curing agent, a curing accelerator, and a pigment therein, the natural resin or artificial silica sand is added to the epoxy resin mortar composition and laid, followed by compression plastering. And hardening, and then filling the cohesive molding coating material in a predetermined thickness on the surface layer of the epoxy resin mortar. According to claim 1, wherein the cohesive molding coating material is 70 to 80% by weight epoxy resin, 3 to 5% by weight plasticizer, 4 to 5% by weight plasticizer, 14 to 16% by weight non-reactive diluent and 0.05 to 0.1 weight defoamer Epoxy resin, characterized by using a composition consisting of 100 parts by weight of a main material composed of% and 50 parts by weight of a curing agent comprising 50 to 60% by weight of a curing agent, 7 to 15% by weight of a resin adduct and 25 to 33% by weight of an accelerator. Mortar construction method. The method of claim 1, wherein 0.5 to 1.0% by weight of triethylenetetraamine or diethyltriamine are mixed and used when constructing the cohesive molding coating material.