KR101582831B1 - Eco-friendly red clay mortar for construction using aqueous epoxy composition and plastering method of red clay mortar for construction using the same - Google Patents

Abstract

The present invention relates to an environmentally friendly mortar for construction using an aqueous epoxy composition and a method for applying the mortar composition for construction using the same. More specifically, the mortar composition of the mortar composition is obtained by mixing the epoxy resin component and the hardener component with the mortar, It is possible to strengthen the bonding between the loess and the surface of the building, to prevent the separation and cracking of the loess, to prevent the cement And an environmentally friendly aqueous yellow mortar composition by using a composition that does not use a volatile organic compound and a method of applying the yellow mortar for construction using the same.

Description

[0001] The present invention relates to an eco-friendly mortar for construction using an aqueous epoxy composition and a method for applying the mortar for construction using the same,

The present invention relates to an environmentally friendly mortar for construction using an aqueous epoxy composition and a method for applying the mortar composition for construction using the same. More specifically, the mortar composition of the mortar composition is obtained by mixing the epoxy resin component and the hardener component with the mortar, It is possible to strengthen the bonding between the loess and the surface of the building, to prevent the separation and cracking of the loess, to prevent the cement And a composition which does not use a volatile organic compound, and to a method of applying the mortar composition for construction using the composition.

Generally, a building is completed by constructing a skeleton with concrete as an apartment, a house, an industrial building, etc., and cement mortar on the surface thereof. The cement mortar causes a sick house syndrome because many harmful substances such as formalin and heavy metal are generated, Asbestos dermatitis, allergic rhinitis, headache, respiratory diseases, etc. are occurring. Due to materials harmful to human body such as styrofoam, asbestos, urethane foam, lacquer, paint and adhesive used in various construction finishes, There is a serious problem.

In recent years, it has been known that radon is generated in a gypsum board which is widely used as waterproof, fireproof, and incombustible interior material in buildings, and it is shocked to consumers. Radon can cause cancer as a radioactive material and has a long half life It does not disappear over time, such as formalin, but the problem is serious because it is continuously released during the period of inhabitation.

Therefore, many attempts have been made to solve these problems. One of the most common ones is the use of natural materials capable of replacing cement as a plaster, and a typical example is a cement Mortars and gypsum boards.

Hwangto is a mineral composed of quartz, feldspar, mica, carbonate minerals and silt. It has various inorganic and enzymatic action and humidity control ability. It emits far-infrared rays. It is harmless and can help the human body health by promoting blood circulation, exhausting wastes, preventing skin aging, deodorizing various odors, air purifying function, antibacterial / antifungal function, and reducing energy by causing self-heating phenomenon when using as an interior material There is also an effect.

However, when this loess is plastered on the surface of buildings, the stiffness against moisture is low, so that it can easily break down in summer or rainy season when humidity is high, and shrinkage occurs due to evaporation of surplus water during drying process, , There is a structural problem that the strength is not sufficiently large.

Various techniques have been developed and proposed to solve the problems of the yellow mortar.

For example, Korean Patent Laid-Open No. 10-2001-0099082 proposes a technique of blending paper fibers and pulverized rice hulls in natural loess to prevent cracking of loess in the plastering and coagulation process and to increase the strength of loess.

Korean Patent No. 10-0383566 has proposed a technique of solving the problems of separation, peeling and cracking of loess, and increasing the strength by mixing baked loess powder, quicklime, acrylic resin, melamine resin, zeolite and the like.

Korean Patent No. 10-0470079 has proposed a technique of first applying a loess material on a wall, covering the fiberglass mat on the loess, and applying a loess material to prevent cracking of the loess material.

In addition, Korean Patent No. 10-0756118 discloses a method for preparing a yellow loess for foundation by mixing a loess powder and a flour paste in a loess soil, mixing sand, ceramics, rice husks, charcoal, etc., And a technique for preventing cracks has been proposed.

Korean Patent No. 10-0941609 has proposed a technique for preventing the surface strength and the occurrence of cracks by using a yellow mortar composition composed of loess powder, silica sand, pulp powder and mineral powder.

Korean Patent Registration No. 10-0886786 discloses a method for producing a building finish material by adding a liquid binder containing hydroxyapatite, elvan stone, pyrophyllite, diatomaceous earth and the like as a main component thereto and containing an acrylic water-soluble emulsion, To prevent the emission of harmful substances and to prevent the occurrence of cracks.

Also, Korean Patent No. 10-1083743 discloses a technique for improving the heat insulating performance and the dew condensation preventing function by using an environmentally friendly functional plaster containing a natural adhesive material such as natural loess, silica airgel, vegetable reinforcing fiber and agar or gelatin Have proposed.

Also, Korean Patent No. 10-0569695 has proposed a technique capable of improving adhesion and workability and maximizing the effect of loess by forming loess mortar containing loess as a main component and water-soluble cellulose derivative and pulp.

As described above, each technology for manufacturing the mortar of yellow clay and using the same for finishing the surface of the building has respective features and advantages, and most of them are related to a technology for physically strengthening by injecting an auxiliary component for preventing cracks. The effect of weather resistance and the like is small and the effect of preventing cracks is not perfect, so that there is a great need for improvement.

SUMMARY OF THE INVENTION The present invention has been developed in consideration of the circumstances of the prior art as described above, and it is an object of the present invention to provide a waterproof epoxy resin composition which comprises a mixture of an aqueous epoxy resin and a curing component, It is possible to firmly fix the loess material by strong cross-linking between the component and the curing component, to improve the integrity with the structure and to prevent defects such as peeling and cracking from occurring, Friendly loess mortar with excellent workability and workability because it can be used after adding a large amount of water because it does not use volatile organic compounds since it does not use volatile organic compounds and is excellent in water resistance and weather resistance due to cohesion and loosening .

In order to achieve the above object,

(A) (A) 10 to 50 wt% of an epoxy resin, 1 to 25 wt% of a reactive diluent, 0.1 to 15 wt% of an aggregating agent, 1 to 20 wt% of an inorganic filler, 0.1 to 5 wt% of an accelerator, % Of water and 10 to 85 wt% of water: and

(b) a second component comprising from 5 to 50% by weight of a polyamide, from 0.1 to 40% by weight of an amine compound, from 0.05 to 20% by weight of an emulsifier, from 0.1 to 10% by weight of an accelerator and from 5 to 50% by weight of water; And

(c) preparing a third component comprising loess powder;

(B) mixing 5 to 50 parts by weight of the second component with 100 parts by weight of the first component prepared in the step (A), and mixing 5 to 100 parts by weight of the third component to prepare an ocher mortar composition;

(C) applying the mortar composition prepared in (B) above to the surface of the target building to form a fine layer; And

(D) curing the formed trowel layer

And a method for applying the mortar of the present invention.

In order to achieve the above object,

(a) from 10 to 50% by weight of an epoxy resin, from 1 to 25% by weight of a reactive diluent, from 0.1 to 15% by weight of an aggregating agent, from 1 to 20% by weight of an inorganic filler, from 0.1 to 5% by weight of an accelerator, 10 to 85% by weight of a first component: and

(b) a second component comprising from 5 to 50% by weight of a polyamide, from 0.1 to 40% by weight of an amine compound, from 0.05 to 20% by weight of an emulsifier, from 0.1 to 10% by weight of an accelerator and from 5 to 50% by weight of water; And

(c) a third component comprising loess powder, wherein from 5 to 50 parts by weight of said second component and from 5 to 100 parts by weight of said third component, relative to 100 parts by weight of said first component, .

The characteristics and advantages of the eco-friendly mortar for architectural use using the aqueous epoxy composition according to the present invention and the method for applying the mortar for architectural use using the same are as follows.

1. First, a mixture of an epoxy resin component and a curing component is mixed with a yellow mortar to prepare a yellow mortar, and the mixture is fused on the surface of the building. By virtue of strong cross-linking between the aqueous epoxy resin component and the curing component, It can be firmly fixed. Specifically, the flocculant is dispersed in the epoxy resin, and then an ideal balance between the aliphatic reactive diluent and the emulsifier is maintained. Thus, appropriate immobility can be ensured by the method of swelling using an epoxy resin, water and an emulsifier, It is possible to make floating mortar by crossing the amine and polyamide with triple reactive diluent in the presence of the amine and polyamide. Therefore, when the loess powder is added to this, it becomes possible to manufacture the loess mortar, Hardening of the yellow mortar can be achieved by the curing reaction.

2. Therefore, when the mortar according to the present invention is coated (applied) on the surface of the building, the integral with the building is improved, and defects such as peeling and cracking can be prevented from occurring.

3. Also, during the curing reaction between the epoxy resin and the curing agent, the resin component coagulates inward and the loess component coherently adheres to the outer side to increase the water resistance and weather resistance. Since the loess component is strongly fixed by the inner resin component, So that no escape or cracking occurs.

4. In addition, since volatile organic compounds are not used, they are eco-friendly, and it is also possible to block odors of amines due to triple adducts.

5. Also, since a large amount of water ranging from 100 to 2000 parts by weight can be added after 100 parts by weight of the first component containing an epoxy resin, the workability and workability of the mortar can be greatly improved.

Hereinafter, the present invention will be described in more detail.

As described above, the method for applying the mortar for building use according to the present invention comprises the following steps. In other words,

(A) (A) 10 to 50 wt% of an epoxy resin, 1 to 25 wt% of a reactive diluent, 0.1 to 15 wt% of an aggregating agent, 1 to 20 wt% of an inorganic filler, 0.1 to 5 wt% of an accelerator, % Of water and 10 to 85 wt% of water: and

(b) a second component comprising from 5 to 50% by weight of a polyamide, from 0.1 to 40% by weight of an amine compound, from 0.05 to 20% by weight of an emulsifier, from 0.1 to 10% by weight of an accelerator and from 5 to 50% by weight of water; And

(c) preparing a third component comprising loess powder;

(B) mixing 5 to 50 parts by weight of the second component with 100 parts by weight of the first component prepared in the step (A), and mixing 5 to 100 parts by weight of the third component to prepare an ocher mortar composition;

(C) applying the mortar composition prepared in (B) above to the surface of the target building to form a fine layer; And

(D) curing the formed matte layer.

The present invention relates to a technology for preparing yellow mortar by incorporating ocher powder into a liquid composition comprising an environmentally-friendly aqueous epoxy composition and a curing component, and coating the inner surface and outer surface of the ocher with the composition.

As described above, the newly constructed building generates pollutants in the room due to asbestos, formaldehyde, radon, other particles, etc., and stimulates the eyes, nose and throat of the human body and causes headache and dizziness. And so on. This problem mainly arises from the cement by finishing the concrete surface of the skeleton with the cement mortar. In order to solve this problem, the surface of the interior building is roughened after the cement finish, or the gypsum board is installed on the surface of the gypsum board Were used.

However, it is not possible to block the release of harmful substances by coating alone, and it is difficult to block the harmful substances generated from the adhesive even if the gypsum board is padded. In addition, the gypsum board itself also releases radon, a primary carcinogen, , It is no exaggeration to say that residents are exposed to carcinogens for a lifetime because they have a very long half-life and thus are released constantly during the lifetime of humans indoors or during the lifetime of buildings.

Various techniques have been proposed to prevent the external emission of harmful substances and to exhibit various beneficial effects of the yellow loam by inserting the yellow loess on the surface of the cement mortar as a means for solving such problems, and the present invention is also one of these techniques.

Hwangto is mainly distributed in Northeast Asia such as the Korean Peninsula and the Yellow River coast of China. It is mainly composed of quartz, yellowish brown calcareous matter including pyroxene and amphibole, and silica, iron, alumina, magnesium, sodium, potassium, Lime and the like, and is known to have an advantageous property to the human body because of its excellent decomposition ability, self-tacking power, and absorption power.

In recent years, much research has been done on the scientific identification of yellow clay, and it is known that yellow clay emits a large amount of far infrared rays, blocks harmful electromagnetic waves, and contains a large amount of microorganisms and enzymes, thereby helping the circulation of the human body.

However, when yellow loess is mixed with water, the viscosity is so large that it is difficult to form into a specific shape, and problems such as cracking or peeling due to shrinkage due to the loss of adhesion progressing simultaneously with the desorption of moisture and the separation of moisture between loess particles occur There is a limit to being easy. In addition, there is also a problem that the workability is poor due to roughness of the surface after the construction, leaving persistent dust and soil debris after the construction.

Therefore, in order to solve this problem, conventionally, a petrochemical binder or an adhesive agent is used in the loess, or a mixture of cement, sand, lime and the like is kneaded, followed by finishing. However, since the petrochemical binder uses an organic volatile compound, it causes another environmental problem. When mixed with cement, there is a problem that harmful substances are released from the cement.

In the present invention, the aqueous epoxy composition and the curing component are used to introduce the beneficial minerals such as the ocher powder before the aqueous epoxy composition is cured, and the ocher mortar is obtained, So that they can be attached to each other.

The aqueous epoxy composition and the curing component used in the present invention have a composition similar to that of the aqueous epoxy composition proposed by the present inventors through the prior patents (Korean Patent Nos. 10-093222, 10-0925850 and 10-0989942) As the material, the aqueous epoxy resin composition can be swollen by using only water and an emulsifier, and the immersion agent can be ensured by incorporating the coagulant therein. The aqueous epoxy resin composition is cured by a curing component to increase cross-linking, and has an excellent curing property by bringing about the activation of the viscus by a stepwise speed control in a curing reaction.

In addition, it is possible to freely add the desired amount of water after work at the work site, which makes it possible to perform a smooth plastering work, and the workability and workability are excellent. In addition, despite the use of amines, the curing reaction can prevent the generation of ammonium gas from the amine.

In addition, when the yellow mortar is cured, the aqueous epoxy resin is closely adhered to the inside by the action of the flocculant and is not exposed to the surface, and the inorganic component including the yellow soil is aggregated on the surface to form a matte inorganic layer, There is an effect that the resin part is firmly fixed to the surface of the building.

As a result, it is possible to prevent peeling and cracking of the inorganic layer including the loess, to improve the moisture resistance and weather resistance, to prevent surface deterioration, and to improve the durability.

Hereinafter, each compound used in the present invention will be described in more detail.

In the present invention, the first component contained in the mortar composition may include 10 to 50 wt% of an epoxy resin, 1 to 25 wt% of a reactive diluent, 0.1 to 15 wt% of a flocculant, 1 to 20 wt% of an inorganic filler, 5 to 5% by weight, an emulsifier of 0.05 to 20% by weight and water of 10 to 85% by weight,

The second component comprises 5 to 50% by weight of a polyamide, 0.1 to 40% by weight of an amine compound, 0.05 to 20% by weight of an emulsifier, 0.1 to 10% by weight of an accelerator and 5 to 50% by weight of water.

The third component is composed of various inorganic components including the loess powder.

In the present invention, the mixing ratio of each component of the first component, the second component and the third component is 5 to 50 parts by weight of the second component and 5 to 100 parts by weight of the third component relative to 100 parts by weight of the first component .

In the present invention, the epoxy resin included in the first component may be an epoxy resin commonly used in the field to which the present invention pertains, and examples thereof include general epoxy resin, chlorine-containing epoxy resin, novolak epoxy resin, brominated epoxy resin Or a mixture thereof. In addition, a mixture of at least one substance commonly used in the field to which the present invention belongs, such as acrylic resin, polyurethane, fiber reinforced plastic (FRP), polymer resin capable of copolymerization or modification other than latex, vinyl or melamine resin It is also possible to use it.

Commercially available examples of the epoxy resin include R1475, KEM-128M, KEM-128-70, KEM-134-60, EM-101-50, KEM-172-60, KEM- 23, H-4121, H-4148-3, KH-700 and KH-701.

Also, in the present invention, the reactive diluent contained in the first component may be mono-epoxy, di-epoxy, tri-epoxy n-butyl glycidyl ether, aliphatic glycidyl ether, 2-ethylhexyl glycidyl ether , Phenylglycidyl ether, O-cresyl glycidyl ether, nonylphenyl glycidyl ether, p-tertbutylphenyl glycidyl ether, 1,4-butanediol diglycidyl ether, 1.6-hexanediol diglycidyl Ether, neopentylglycidyl ether, 1,4-cyclohexanedimethyloliglycidyl ether, polypropylene glycol diglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, Cyadyl ether, resorcinol diglycidyl ether, hydrogenated bisphenol euglycidyl ether, trimethylol propane triglycidyl ether, glycerol polyglycidyl ether, diglycerol polyglycidyl ether, Terrytol polyglycidyl ether, ketol glycidyl ether, service polyglycidyl ether, neokenoxy acid glycidyl ether, diglycidyl-1.2-cyclic nucleic acid dicarboxylate, diglycidyl- Phthalate, n, n-diglycidylamine, n, n-diglycidyl-O-tolylene, triglycidyl-p-aminophenol, tetraglycidyl-diaminodiphenylmethane, triglycidyl One selected from the group consisting of diallyl isocyanate, 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, polypropyleneglycidyl diglycidyl ether, and triethylpropropentylglycidyl ether It is possible to use the above reactive diluent.

In the present invention, the flocculant contained in the first component may be at least one selected from the group consisting of silicon dioxide, aerosol, bentonite nanoparticles, silica nanoparticles, white carbon, silicate, , And more preferably silicon dioxide.

In the present invention, the inorganic filler contained in the first component may be at least one selected from the group consisting of calcium carbonate, talc, heavy carbon, ceramic, powder such as clay, silica and dolomite, Calcium carbonate or talc.

Further, in the present invention, the promoter contained in the first component may be at least one selected from the group consisting of phenol, nonylphenol, tertiary amine, dibutyltin diacetate, stilnus oxide, dibutyltin dilaurate, monobutyltin oxide, (2-ethylhexanate), dibutyltinmelite, potassic oxide, bismuth tri-2-ethylhexanate, benzyltriethylammonium chloride, 60-copper complex compound , Ni-Al complex, trade name A-399 (Kukdo Chemical), and the like, and phenol is more preferable.

In the present invention, the emulsifier contained in the first component may be one selected from the group consisting of a copolymer of polyoxyethylene and polyoxypropylene, a copolymer of polyoxyethylene and polyoxyethylene phenyl ether, and sodium dodecylbenzene sulfide It is possible to use the above reactive or non-reactive emulsifiers. Adeka NE-10, SE-10N and the like, which are commercially available under the trade name, can be used, and other alkylphenol surfactants, cationic surfactants, anionic surfactants, nonionic surfactants, polyether siloxane base surfactants , And more preferably at least one selected from the group consisting of polyoxyethylene and polyoxypropylene.

The water used in the present invention may be water generally used, such as distilled water, tap water, water, index water, ground water, green wood water, soft water, soft water and the like, and is not particularly limited.

The first component according to the present invention may include additives such as a desiccant, a flame retardant, and a defoaming agent commonly used in the field to which the present invention belongs. In this case, calcium oxide, copper sulfate, The flame retardant may be pentabromodiphenyloxide, decabromodiphenyloxide, and the like. The antifoaming agent may be a polysiloxane-based emulsion type, a plasticizer, an antistatic agent, or an antioxidant.

In the present invention, the polyamide contained in the second component preferably has a weight average molecular weight of 1,000 to 5,000, more preferably 1,000 to 4,000. If the weight average molecular weight of the polyamide is less than the above range, a desired viscosity can not be obtained and it is difficult to ensure the immobility. If the weight average molecular weight is larger than the above range, it is not easy to control the viscosity. In the present invention, the polyamide may be used as long as it has the weight average molecular weight regardless of the type thereof.

In the present invention, the amine compound contained in the second component may be at least one selected from the group consisting of polyoxypropylene diamine, triethylene tetramine, diethylenetriamine, isophoronediamine, metaxylenediamine, metaphenylenediamine, dimethylamine, But are not limited to, at least one compound selected from the group consisting of phenylsulfonamines, diethyleneaminopropylamines, and mentantiamines. Preferably, polyoxypropylene diamine is used and in addition, triethylenetetramine, diethylenetriamine, isophoronediamine, metaxylenediamine, metaphenylenediamine, dimethylamine, diaminodiphenylsulfonamine, diethyleneaminopropylamine And mentantiamine may be further used.

In the present invention, the emulsifier, accelerator and water contained in the second component may be the same as the emulsifier used in the first component.

Also, in the present invention, it is preferable to use green loess powder as the loess powder contained in the third component.

In addition to the loess powder, various inorganic powders may be included. Examples of the inorganic powders include mica, gypsum stone, elvan stone, tourmaline, anion stone, capnite, germanium, silica, zeolite, diatomaceous earth, pearlite, talc, And at least one kind of powder selected from the group consisting of silver, silver, silver and iridite, but is not limited thereto.

By the powders, far-infrared rays and anion emission effect can be further increased, and a large amount of health-beneficial components can be obtained together with yellow loess.

In the present invention, the first component, the second component, and the third component are uniformly mixed to prepare a yellow mortar composition, and the composition is applied to the surface of the target building to form a fine layer.

In this case, in order to improve workability of plaster, a fourth component may be further mixed in addition to the above three components, and the fourth component may be composed of a very small amount of emulsifier and water, And 100 to 2000 parts by weight based on 100 parts by weight of the first component. The emulsifier and water of the fourth component may be the same as the emulsifier and water of the first component.

The first component and the second component according to the present invention maximize the compatibility and the activation of the viscus in the presence of water. The fourth component is a mixture of water base containing a very small amount of emulsifier, The odor of the amine can be removed due to the effect of generating the triple adduct by the circulation crossing method of the component (second component).

In the curing component (second component) according to the present invention, it is possible to use polyoxypropylene diamine, triethylene tetramine, diethylenetriamine, isophoronediamine, metaxylenediamine, metaphenylenediamine, dimethylamine, diaminodiphenylsulfonamines , Diethylene aminopropyl amine, and menthane diamine, and an adduct obtained by adding an epoxy to the amine compound in addition to the polyamide, may be used. In addition, a catalyst (dibutyl tin diacetate But are not limited to, dodecyltrimellitate, dodecyldodecylate, dodecyldodecylate, dodecyldodecylate, dodecyldodecylate, dodecyldodecyldodecylate, dodecyldodecyldodecylate, Ammonium salts, copper compounds, nickel, and aluminum compounds are selected and mixed as catalysts. It is also possible to use an adduct material which is adhered together with an epoxy resin.

It is also possible to use tetrahydrophthalic anhydride including aliphatic acid anhydride, hexahydrophthalic anhydride, phthalic anhydride, nadic methyl anhydride, trimellitic anhydride, hexachloroendomethylenetetrahydrofuran It is also possible to use an admixture in which an epoxy resin is added or mixed with at least one selected from the group consisting of tallic anhydride, pbromellitic dianhydride, benzophenone tetracarboxylic anhydride, dimethylaminomethylphenol, and benzyldimethylamine It is also possible to mix and adduce the amine or polyamine adduct with water, or to use the monomer, dimer, trimmer epoxy resin, or pure epoxy resin. And at least one selected from the group consisting of polyamides, amines, acid anhydrides and latent dicyandiamides and imidazoles is mixed or monomers selected from the group consisting of meta-xylylenediamine, triethylenetetraamine, and diethylenetriamine, dimer, trimmer or epoxy The resin may be used in admixture with the resin, and may be used in combination with a resin such as dibutyltin diacetate, stannus oxide, dibutyltin dilaurate, monobutyltin oxide, monobutyltin chloride dihydroxide, Dimer, trimer or epoxy resin or a mixture of at least one selected from dibutyltinmellite, potentium oxide, ammonia salt of bismuthtri-ethyleneether, copper compound, nickel and aluminum catalyst, It is also possible to use it by being ducted together with it.

The first component and the second component according to the present invention may be mixed immediately before use and cured according to time, and the third component containing an inorganic substance such as loess may be separately constituted, or the first component or the second component As shown in FIG.

In the aqueous epoxy resin composition of the first component of the present invention, an emulsion polymerization reaction occurs when an emulsifier-containing water is mixed with the coagulant such as aerosol incorporated in the epoxy resin and the appropriate temperature is maintained. Even if no coagulant The water and the emulsifier are stably trapped and adsorbed on the tangled particle surfaces of the particles, so that the oligomer, polymer, and radical aggregate with each other to cause a stopping reaction, resulting in swelling, and the property becomes immobile. As described above, the emulsion polymerization (emulsion reaction) by the flocculant is widely and stably carried out on the inner and outer surfaces of the particles, and has a very high hydrophilicity. Such characteristics can contain a large amount of water even after mixing the hardening component. Is a mixture of amines and polyamides with monomers, dimers, and trimeric fatty acids, which are adducted by cyclic cross-linking, and by the interaction of unsaturated fatty acids of polyamide with flocculants having thixotropic properties, adsorption energy is increased and stabilized It is possible to use a mixture of a large amount of water base containing an emulsifying agent and further, it is possible to minimize the odor peculiar to the amine due to the triple cyclic adduct.

The aqueous epoxy resin thus formed is a composition maximizing the activation and compatibility of the water even in the presence of water. In the composition, 100 parts by weight of a mixture of the main component (first component) and the curing agent component (second component) is mixed with a very small amount of emulsifier (Fourth component) is blended again to 100 parts by weight or more, preferably 100 to 2000 parts by weight, more preferably 1000 to 2000 parts by weight, the compatibility is smooth. Therefore, even if the fine inorganic powder including the loess is mixed, the plastering work can proceed smoothly, and workability and workability are remarkably improved.

As described above, the mortar mortar composition according to the present invention is excellent in mechanical properties by being applied according to the use, and can meet the demands of pollution of industry and purification of work. Also, it is easy to handle, safe in work environment, has no risk of fire, and has environment-friendly characteristics such as not polluting work environment.

In the present invention, the yellow mortar composition obtained in the step (C) is applied to the surface of the target building to form a fine layer and then hardened to perform a plastering operation. The yellow mortar composition has a thickness of 2 ~ And cured, and is repeated twice or three times to obtain a desired thickness by matting and curing.

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

[Example]

Preparation of first and second components

1. Preparation of the first component (the subject component)

Constituent Weight (g) Epoxy resin ⁽¹⁾ 45.00 Reactive diluents ⁽²⁾  6.00 Flocculants ⁽³⁾  1.10 Inorganic fillings ⁽⁴⁾  2.50 Promoters ⁽⁵⁾  0.30 Emulsifiers ⁽⁶⁾  0.10 water 45.00 Sum              100.00

2. Preparation of the second component (curing component)

Constituent Weight (g) Curing agent 1 ⁽⁷⁾  16.00 Curing agent 2 ⁽⁸⁾ 45.00 Curing agent 3 ⁽⁹⁾  5.0 Promoters ⁽¹⁰⁾  5.0 Emulsifiers ⁽⁶⁾  5.0 water  24 Sum 100.00

The composition is mixed at the construction site and the loess powder (third component) is mixed with the weight ratio of the first component: the second component: the third component = 100: 25: 50 to obtain a mixture, 1000 parts by weight of water base were further added and mixed again to obtain a mortar mortar composition. Then, the concrete wall of the building was subjected to moderate and high-temperature treatments and cured to form a uniform fine layer.

The name and source of the chemical components of the actual product used in the composition as described above are summarized as follows.

       (1) Epoxy resin: Copolymer of epichlorohydrin and bisphenol (Kukdo Chemical)

       (2) Reactive diluent: trifunctional epoxy glycidyl ether

       (3) Flocculating agent: silicon dioxide (aerosol)

       (4) Mineral filler: talc

       (5) Accelerator: phenol

       (6) Emulsifiers: polyoxyethylene and polyoxypropylene block copolymers

       (7) Hardener 1: Polyoxypropylene diamine

       (8) Hardener 2: polyamide (weight average molecular weight: 2800)

       (9) Hardener 3: Triethylenetetraamine

(10) Accelerator: phenol accelerator (A-399)

Performance evaluation

The surface of the concrete wall surface was cleaned and then mixed with the above-mentioned mortar composition so that the mortar composition was flattened by laying on a flat surface. After curing at room temperature 20 ° C for about 24 hours, physical properties were measured.

As a result of measuring the physical properties, the adhesive strength (adhesive force) of 50.2 kgf / cm 2, the compressive strength of 110-120 kgf / cm 2, the tensile strength of 120-150 kgf / ± 2 ° C) no abnormality.

In order to test the chemical resistance, a sharlet was attached to the surface of the hardened yellow mortar layer to prevent the solution from flowing out. After the solution was injected using a syringe, the solution was left for 30 days and visually checked. As a result, calcium chloride solution , pH sulfuric acid solution, and the like.

Also, the appearance was smooth even after the appearance of the plaster after about 1 month, and no cracks or peeling occurred after the drying, and no soil debris or dust occurred at all.

From the above results, it can be seen that the yellow mortar composition prepared according to the present invention has a flat surface without any voids on its surface without being distorted in shape by a plastering operation, so that work is very easy and the bonding strength between the resin portion and the loess is strong, It can be ensured that the external emission of the harmful substance is blocked and it is found that it has environment-friendly characteristics.

Claims (5)

(A) (A) 10 to 50 wt% of an epoxy resin, 1 to 25 wt% of a reactive diluent, 0.1 to 15 wt% of an aggregating agent, 1 to 20 wt% of an inorganic filler, 0.1 to 5 wt% of an accelerator, % Of water and 10 to 85 wt% of water: and
(b) a second component comprising from 5 to 50% by weight of a polyamide, from 0.1 to 40% by weight of an amine compound, from 0.05 to 20% by weight of an emulsifier, from 0.1 to 10% by weight of an accelerator and from 5 to 50% by weight of water; And
(c) preparing a third component comprising loess powder;
(B) mixing 5 to 50 parts by weight of the second component with 100 parts by weight of the first component prepared in the step (A), and mixing 5 to 100 parts by weight of the third component to prepare an ocher mortar composition;
(C) applying the mortar composition prepared in (B) above to the surface of the target building to form a fine layer; And
(D) curing the formed trowel layer
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In the step (B), 100 to 2000 parts by weight of a fourth component composed of an emulsifying agent and water is added to 100 parts by weight of the first component in the preparation of the mortar composition,
The mortar composition is plastered and cured at a thickness of 2 to 3 mm per application at the time of application, and is repeatedly and cured two to three times,
The water-soluble epoxy resin is formed in close contact with the surface of the mortar composition and is not exposed to the surface, and the inorganic component including the yellow soil is aggregated on the surface to form a matte inorganic layer
Application Method of Hwangto Mortar for Construction.
The method according to claim 1, wherein the third component of (c) comprises at least one of mica, gypsum, elvan, tourmaline, anionite, Further comprising at least one powder selected from the group consisting of jade, salt and ilite.
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