KR102379056B1 - Eco-friendly polymer mortar flooring composition and constructing method using The same - Google Patents

Abstract

The present invention relates to an environmentally-friendly polymer mortar flooring material composition comprising a flooring material composition for an undercoat comprising a two-component water-soluble polymer resin, and a flooring material composition for a top coat comprising a two-component water-soluble polymer resin and an inorganic binder. The two-component water-soluble polymer resin comprises: a main agent comprising a water-soluble epoxy resin, a surfactant, a performance-improving admixture, and water; and a curing agent comprising an amine compound and water. The performance-improving admixture comprises ethylene glycol diglycidyl ether, 1,4-cyclohexanedimethanol diglycidyl ether, a silane compound represented by chemical formula 1, a thiol compound represented by chemical formula 2, and pullulan acetate microspheres. The inorganic binder comprises normal Portland cement, limestone fine powder, magnesium hydroxide, aluminum nitride, and silica. According to the present invention, the composition has excellent adhesion, excellent tear resistance due to lateral force, and has environmentally-friendly properties. In chemical formula 1, R is an alkyl group having 1 to 6 carbon atoms, and n is an integer of 0 to 5. In chemical formula 2, m is an integer of 1 or 2.

Description

Eco-friendly polymer mortar flooring composition and flooring construction method using the same

The present invention is an eco-friendly polymer mortar flooring material that has excellent adhesion, can prevent lifting, peeling and dropping, has excellent tear resistance, impact resistance and durability due to lateral force, does not use volatile organic compounds, and does not detect harmful heavy metals It relates to a composition and a flooring construction method using the same.

In general, after civil works and buildings such as parking lots, hospitals, factories, commercial buildings, offices, sports facilities, and restaurants are completed, epoxy resin, urethane resin, Synthetic resin-based flooring materials such as vinyl resin and cement-based flooring materials are being applied.

Among them, the epoxy resin and the urethane resin have excellent flexibility, elasticity, dust resistance, stain resistance, workability, quick-drying and water resistance, as well as excellent initial adhesion, and there is an advantage that a large amount of various fillers can be used. If a coating film of a certain thickness or more is formed on the surface of the concrete floor after curing with a finishing material containing an epoxy resin or urethane resin and cured, the concrete floor can be efficiently blocked from the external environment at the beginning of construction, and excellent finishing effect can be exhibited in a short period of time.

However, flooring materials containing an epoxy resin exhibit excellent properties such as strength, dust resistance, abrasion resistance, adhesion, gloss, etc., but have poor air permeability, so the adhesive surface or the upper epoxy resin layer does not allow moisture contained in the lower concrete to pass through. Therefore, when a coating film is formed in a state where the concrete is not sufficiently dried, the moisture contained in the concrete is vaporized due to the difference in temperature or humidity, and a layer is formed between the coating film and the concrete by volume expansion, causing the flooring to float.

In addition, flooring materials containing epoxy resin also have problems that require repair and maintenance due to repeated defects such as peeling, dropping, and lifting in a short period of time after construction. There is a problem of fatal adverse effects on the human body, such as the risk of workers during construction and long-term exposure of users to long-term risks due to the continuous volatilization of residual solvents after construction. There is a problem that can cause a major accident by generating gas.

Republic of Korea Patent No. 10-1038769 Republic of Korea Patent Registration No. 10-1337346 Republic of Korea Patent Registration No. 10-1908114

The present invention has been devised to solve the above-described problems, and an embodiment of the present invention can prevent lifting, peeling and dropping by improving the adhesion to the floor surface such as concrete and cement and the adhesion of the flooring composition itself. An object of the present invention is to provide an eco-friendly polymer mortar flooring composition that does not use volatile organic compounds and a flooring construction method using the same.

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

One embodiment of the present invention is an eco-friendly polymer mortar comprising a flooring composition for undercoating comprising a two-component water-soluble polymer resin, and a topcoating composition comprising a two-component water-soluble polymer resin and an inorganic binder in a weight ratio of 1: 0.5 to 2 as a flooring composition;

The two-component water-soluble polymer resin may include a main agent comprising 10 to 50% by weight of a water-soluble epoxy resin, 0.5 to 10% by weight of a surfactant, 1 to 20% by weight of a performance improvement admixture, and the remainder of water; 1 to 30% by weight of the amine compound and a curing agent containing the remaining amount of water in a volume ratio of 2 to 5:1;

The performance improvement admixture is based on 100 parts by weight of ethylene glycol diglycidyl ether, 10 to 30 parts by weight of 1,4-cyclohexanedimethanol diglycidyl ether, and 1 to 15 parts by weight of a silane compound represented by the following Chemical Formula 1 , 1 to 15 parts by weight of the thiol compound represented by the following formula (2) and 0.1 to 5 parts by weight of pullulan acetate microspheres;

The inorganic binder is usually based on 100 parts by weight of Portland cement, 10 to 30 parts by weight of limestone fine powder, 5 to 15 parts by weight of magnesium hydroxide, 1 to 10 parts by weight of aluminum nitride, and 80 to 120 parts by weight of silica sand Eco-friendly polymer mortar A flooring composition is provided.

[Formula 1]

In the above formula,

R is an alkyl group having 1 to 6 carbon atoms,

n is an integer from 0 to 5;

[Formula 2]

In the above formula,

m is an integer of 1 or 2.

The water-soluble epoxy resin is at least one epoxy resin selected from the group consisting of glycidyl ether type, glycidyl ester type, bisphenol A type, bisphenol F type, and mixtures thereof;

The amine compound may include at least one aliphatic amine compound selected from the group consisting of diethylene triamine, triethylene triamine, triethylene tetraamine, tetraethylene pentaamine, diethylaminopropylamine, and mixtures thereof; and at least one cyclic amine compound selected from the group consisting of N-aminoethyl piperazine, 1-aminopyrrolidine, 1-aminohomopiperidine, N-amino-N'-methylpiperazine, and mixtures thereof; 1: It may be mixed in a weight ratio of 0.2 to 0.8.

The pullulan acetate microspheres have an average particle diameter of 50 to 100 μm;

Formamide, pyridine, and acetic anhydride at a temperature of 45 to 55 ℃ 4 to 8: 1 to 2: 1 to 2 to a solution dissolved by mixing 1 to 2 volume ratio, adding pullulan to completely dissolve and react; Dropping the solution on which the reaction is completed into water to obtain a precipitate and purifying; And it may be prepared by a method comprising the step of freeze-drying the purified final reactant.

The magnesium hydroxide is magnesium hydroxide whose surface is modified with a porous biodegradable polymer;

Magnesium hydroxide whose surface is modified with a porous biodegradable polymer is prepared by dissolving the biodegradable polymer in dichloromethane together with a pore former to prepare a biodegradable polymer solution; Into the prepared biodegradable polymer solution, by adding magnesium hydroxide having an average particle diameter of 100 to 700 μm and ultrasonicating at a temperature of 25 to 50 ° C., modifying the surface of the magnesium hydroxide into a biodegradable polymer; And the surface is modified with a porous biodegradable polymer by filtering and washing the magnesium hydroxide modified with a biodegradable polymer, washing the remaining pore former and impurities, and then drying at a temperature of 45 to 65 ° C. It may be prepared by a method comprising the step of preparing magnesium hydroxide.

In addition, another embodiment of the present invention is a flooring construction method using the eco-friendly polymer mortar flooring composition;

The eco-friendly polymer mortar flooring composition includes a flooring composition for undercoating and a flooring composition for topcoating;

The flooring construction method includes: a base surface treatment step of removing contaminants from the base surface, and repairing cracks or grooves to adjust the base surface; Undercoat construction step of applying the flooring composition for undercoating to the upper surface where the base surface treatment is completed; And it provides a flooring construction method comprising a topcoating step of applying the flooring composition for the topcoat to the top surface on which the undercoating is completed.

According to the eco-friendly polymer mortar flooring composition and the flooring construction method using the same according to an embodiment of the present invention, the adhesion to the floor surface such as concrete and cement is excellent to increase the strength of the concrete or cement surface, and the flooring composition for undercoating and By greatly improving the adhesion between the topcoating flooring compositions, lifting, peeling and dropping can be prevented, and tear resistance due to lateral force, impact resistance and durability are excellent. In addition, it can provide excellent waterproofness, water resistance, chemical resistance and abrasion resistance, and can prevent icing due to snow and ice even in winter season, and is environmentally friendly because harmful heavy metals are not detected without using volatile organic compounds there is

Hereinafter, embodiments of the present invention will be described in detail. However, this is provided as an example, and the present invention is not limited thereto, and the present invention is only defined by the scope of the claims to be described later.

One embodiment of the present invention is an eco-friendly polymer mortar comprising a flooring composition for undercoating comprising a two-component water-soluble polymer resin, and a topcoating composition comprising a two-component water-soluble polymer resin and an inorganic binder in a weight ratio of 1: 0.5 to 2 as a flooring composition;

The two-component water-soluble polymer resin may include a main agent comprising 10 to 50% by weight of a water-soluble epoxy resin, 0.5 to 10% by weight of a surfactant, 1 to 20% by weight of a performance improvement admixture, and the remainder of water; 1 to 30% by weight of the amine compound and a curing agent containing the remaining amount of water in a volume ratio of 2 to 5:1;

The performance improvement admixture is based on 100 parts by weight of ethylene glycol diglycidyl ether, 10 to 30 parts by weight of 1,4-cyclohexanedimethanol diglycidyl ether, and 1 to 15 parts by weight of a silane compound represented by the following Chemical Formula 1 , 1 to 15 parts by weight of the thiol compound represented by the following formula (2) and 0.1 to 5 parts by weight of pullulan acetate microspheres;

The inorganic binder is usually based on 100 parts by weight of Portland cement, 10 to 30 parts by weight of limestone fine powder, 5 to 15 parts by weight of magnesium hydroxide, 1 to 10 parts by weight of aluminum nitride, and 80 to 120 parts by weight of silica sand Eco-friendly polymer mortar A flooring composition is provided.

[Formula 1]

In the above formula,

R is an alkyl group having 1 to 6 carbon atoms,

n is an integer from 0 to 5;

[Formula 2]

In the above formula,

m is an integer of 1 or 2.

According to the eco-friendly polymer mortar flooring composition and the flooring construction method using the same according to an embodiment of the present invention, the adhesion to the floor surface such as concrete and cement is excellent to increase the strength of the concrete or cement surface, and the flooring composition for undercoating By greatly improving the adhesion between the flooring composition and the top coat, it is possible to prevent lifting, peeling and dropping, and there is an effect of excellent resistance to tearing, impact resistance and durability due to lateral force. In addition, it can provide excellent waterproofness, water resistance, chemical resistance and abrasion resistance, and can prevent icing due to snow and ice even in winter season, and is environmentally friendly because harmful heavy metals are not detected without using volatile organic compounds there is

More specifically, the eco-friendly polymer mortar flooring composition according to an embodiment of the present invention includes a flooring composition for undercoating comprising a two-component water-soluble polymer resin, and a two-component water-soluble polymer resin and an inorganic binder in a weight ratio of 1: 0.5 to 2 It includes a flooring composition for top coating.

The flooring composition for undercoating is a primer applied to a floor surface such as concrete or cement and a coating material for undercoating. It can be constructed on a wet surface, and can strengthen the sphere with excellent strength, interlayer adhesion, and permeability, and has excellent water resistance, chemical resistance and Anti-corrosive properties can be implemented. In addition, the flooring composition for topcoating is applied to the top surface on which the construction of the flooringcomposition for undercoating is completed, and has excellent adhesion and integrity with the flooring composition for undercoating, and excellent strength and interlayer adhesion, permeability, water resistance, chemical resistance and rust resistance , as well as abrasion resistance and durability can be greatly improved.

More specifically, the undercoating composition includes a two-component water-soluble polymer resin; The flooring composition for top coating may include a two-component water-soluble polymer resin and an inorganic binder in a weight ratio of 1: 0.5 to 2 in consideration of the improvement effect, viscosity, and construction workability described above.

At this time, the two-component water-soluble polymer resin included in the flooring composition for the undercoat and the flooring composition for the topcoat may be the same or different from each other, and 10 to 50% by weight of a water-soluble epoxy resin, 0.5 to 10% by weight of a surfactant, and a performance improvement admixture 1 to 20% by weight and the balance of a subject comprising water; A curing agent containing 1 to 30 wt% of the amine compound and the remaining amount of water may be preferably used in a volume ratio of 2 to 5:1.

Such a two-component water-soluble polymer resin can be applied on a wet surface on a floor surface such as concrete or cement, can reinforce a sphere with excellent strength, interlayer adhesion, and permeability, and can implement excellent water resistance, chemical resistance and rust prevention properties. In addition, the flooring composition for topcoating is applied to the top surface on which the construction of the flooringcomposition for undercoating is completed, and has excellent adhesion and integrity with the flooring composition for undercoating, and excellent strength and interlayer adhesion, permeability, water resistance, chemical resistance and rust resistance , as well as abrasion resistance and durability can be greatly improved. In addition, since the volatile organic compound used as a solvent in the conventional epoxy-based flooring composition is not used, it has an eco-friendly effect.

The mixing ratio of the subject and the curing agent may be implemented differently depending on the construction environment, but in consideration of the above-described improvement effect and construction workability, it is preferably included in a volume ratio of 2 to 5:1.

First, the water-soluble epoxy resin of the above subject can be constructed on a wet surface, and has excellent strength, interlayer adhesion, water resistance, chemical resistance, rust prevention, durability and eco-friendliness.

The water-soluble epoxy resin has an epoxy equivalent of 100 to 500 g/eq, a weight average molecular weight (Mw) of 3,000 to 100,000, and a viscosity of 500 to 20,000 cps at 25° C., and may be used without particular limitation.

More specifically, non-limiting examples of the water-soluble epoxy resin include at least one epoxy resin selected from the group consisting of glycidyl ether type, glycidyl ester type, bisphenol A type, bisphenol F type, and mixtures thereof. can be used In addition, non-limiting examples of the commercially available water-soluble epoxy resin, R-1475 (Kukdo Chemical), KEM-019-50 (Kukdo Chemical), KEM-172-60 (Kukdo Chemical), EM-101- 50 (Kukdo Chemical), KEM-134-60 (Kukdo Chemical), KEM-128-70 (Kukdo Chemical), etc. can be used.

The water-soluble epoxy resin is preferably contained in the subject matter in an amount of 10 to 50% by weight. When the content of the water-soluble epoxy resin is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the water-soluble epoxy resin is too large, the curing time is too delayed or the uniform dispersibility is lowered. There is a problem that the improvement effect may be lowered.

The surfactant of the subject matter improves uniform dispersibility, wettability of the interface, and leveling property, so that the above-described improvement effect can be uniformly implemented throughout the coating film.

As the surfactant, an alkylamine-based surfactant may be preferably used. More preferably, the alkylamine-based surfactant may be a straight-chain or branched alkylamine having 4 to 24 carbon atoms.

The surfactant is preferably contained in the range of 0.5 to 10% by weight in the subject matter. When the content of the surfactant is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the surfactant is too large, there is a problem that water resistance or abrasion resistance may be deteriorated.

The performance improvement admixture of the subject matter strengthens the spheres with excellent strength, interlayer adhesion, and permeability, and functions to greatly improve water resistance, chemical resistance and rust prevention, as well as abrasion resistance and durability.

The performance-improving admixture is preferably contained in the subject matter in an amount of 1 to 20% by weight. If the content of the performance-improving admixture is too small, the improvement effect may be insufficient, and if the content of the performance-improving admixture is too large, the curing time may be too delayed or price competitiveness may be lowered. There is this.

More specifically, the performance improvement admixture is based on 100 parts by weight of ethylene glycol diglycidyl ether, 10 to 30 parts by weight of 1,4-cyclohexanedimethanol diglycidyl ether, silane compound 1 represented by Formula 1 to 15 parts by weight, 1 to 15 parts by weight of the thiol compound represented by Formula 2, and 0.1 to 5 parts by weight of pullulan acetate microspheres may be preferably used.

First, the ethylene glycol diglycidyl ether serves to strengthen the spheres with excellent permeability and adhesion, and lower the viscosity of the subject to improve construction workability.

Hereinafter, the content of other components constituting the performance improvement admixture is based on 100 parts by weight of the ethylene glycol diglycidyl ether.

The 1,4-cyclohexanedimethanol diglycidyl ether is included together with the ethylene glycol diglycidyl ether to strengthen the sphere with excellent permeability and adhesion, and lower the viscosity of the subject to improve construction workability function.

The 1,4-cyclohexanedimethanol diglycidyl ether is preferably contained in an amount of 10 to 30 parts by weight based on 100 parts by weight of the ethylene glycol diglycidyl ether. When the content of 1,4-cyclohexanedimethanol diglycidyl ether is too small, there is a problem that the above-described improvement effect may be insufficient, and the content of 1,4-cyclohexanedimethanol diglycidyl ether In the case of too many of these, there is a problem that the physical properties of chemical resistance and rust prevention may be deteriorated.

The silane compound represented by Formula 1 functions to improve excellent permeability, strength, adhesion, more excellent water resistance, chemical resistance and rust resistance, as well as abrasion resistance and durability.

The silane compound represented by Formula 1 is preferably contained in an amount of 1 to 15 parts by weight based on 100 parts by weight of the ethylene glycol diglycidyl ether. When the content of the silane compound represented by Formula 1 is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the silane compound represented by Formula 1 is too large, the viscosity increases, and construction work There is a problem that the performance may be lowered.

The thiol compound represented by Formula 2 functions to improve excellent strength, adhesion, more excellent water resistance, chemical resistance and rust resistance, as well as abrasion resistance and durability.

The thiol compound represented by Formula 2 is preferably contained in an amount of 1 to 15 parts by weight based on 100 parts by weight of the ethylene glycol diglycidyl ether. When the content of the thiol compound represented by the formula (2) is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the thiol compound represented by the formula (2) is too large, the viscosity increases, and construction work There is a problem that the performance may be lowered.

The pullulan acetate microspheres function to improve excellent permeability, strength, impact resistance, and more excellent water resistance.

These pullulan acetate microspheres are completely dissolved by adding pullulan to a solution in which formamide, pyridine and acetic anhydride are mixed and dissolved in a volume ratio of 4 to 8: 1 to 2: 1 to 2 at a temperature of 45 to 55 ° C. and reacting; Dropping the solution on which the reaction is completed into water to obtain a precipitate and purifying; And it is prepared by a method comprising the step of freeze-drying the purified final reactant, it can preferably be used that has an average particle diameter of 50 to 100 μm.

The pullulan acetate microspheres are preferably contained in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the ethylene glycol diglycidyl ether. If the content of the pullulan acetate microspheres is too small, there is a problem that the above-described improvement effect may be insufficient. there is a problem with

On the other hand, the amine compound of the curing agent is mixed with the main agent to cure the composition, thereby improving the above-described strength, water resistance, chemical resistance, etc., curing speed and stability.

The amine compound of the curing agent may include at least one aliphatic amine compound selected from the group consisting of diethylene triamine, triethylene triamine, triethylene tetraamine, tetraethylene pentaamine, diethylaminopropylamine, and mixtures thereof; and at least one cyclic amine compound selected from the group consisting of N-aminoethyl piperazine, 1-aminopyrrolidine, 1-aminohomopiperidine, N-amino-N'-methylpiperazine, and mixtures thereof; A mixture of 1: 0.2 to 0.8 by weight can be preferably used.

The amine compound of the curing agent is preferably contained in the curing agent in an amount of 1 to 30% by weight. When the content of the amine compound is too small, there is a problem that the above-described improvement effect may be insufficient. .

On the other hand, the inorganic binder included in the topcoating composition is mixed with a two-component water-soluble polymer resin, so that construction on a wet surface is possible, and excellent strength and interlayer adhesion, impact resistance, abrasion resistance, watertightness, water resistance, chemical resistance, rust prevention, waterproofness , anti-freezing, freeze-thaw resistance, and durability can be greatly improved.

The inorganic binder is usually 10 to 30 parts by weight of limestone fine powder, 5 to 15 parts by weight of magnesium hydroxide, 1 to 10 parts by weight of aluminum nitride, and 80 to 120 parts by weight of silica sand based on 100 parts by weight of Portland cement. can

First, the normal Portland cement is a binder that reacts with water to cause a pozzolan reaction, and functions to realize excellent strength after hardening.

It is preferable to use the ordinary Portland cement specified in the KS, and as the ordinary Portland cement distributed in the general market, a powder having a fineness of 3,000 to 6,000 cm2/g may be used.

Hereinafter, the content of other components constituting the inorganic binder is based on 100 parts by weight of the ordinary Portland cement.

The fine limestone powder functions to improve water tightness to improve strength and durability, and to improve chemical resistance, rust prevention, anti-freezing, and freeze-thaw resistance.

The fine limestone powder has a calcium carbonate (CaCO ₃ ) content of 75 to 90% by weight and a fineness of 5,000 to 8,000 cm 2 /g, thereby further improving the above-described improvement effect.

The fine limestone powder is preferably contained in an amount of 10 to 30 parts by weight based on 100 parts by weight of the normal Portland cement. When the content of the fine limestone powder is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the fine limestone powder is too large, there is a problem that wear resistance may be reduced.

The magnesium hydroxide functions to improve resistance to salt damage and freeze-thaw, and to improve abrasion resistance, impact resistance, watertightness, waterproofness, and durability along with an excellent strength expression effect.

The above-described improvement effect can be further improved by using the magnesium hydroxide having a surface modified with a porous biodegradable polymer. In particular, the impact resistance can be greatly improved.

More specifically, the magnesium hydroxide surface of which is modified with a porous biodegradable polymer is prepared by dissolving the biodegradable polymer in dichloromethane (Dicholomethane) together with a pore former to prepare a biodegradable polymer solution; Into the prepared biodegradable polymer solution, by adding magnesium hydroxide having an average particle diameter of 100 to 700 μm and ultrasonicating at a temperature of 25 to 50 ° C., modifying the surface of the magnesium hydroxide into a biodegradable polymer; And the surface is modified with a porous biodegradable polymer by filtering and washing the magnesium hydroxide modified with a biodegradable polymer, washing the remaining pore former and impurities, and then drying at a temperature of 45 to 65 ° C. What is produced by a method comprising the step of preparing magnesium hydroxide can be preferably used.

In this case, the biodegradable polymer is polylactide, polyglycolide, polycaprolactone, polylactide-co-glycolide, polylactide-co-caprolactone, polyglycolide-co-caprolactone, poly Dioxanone, polytrimethylene carbonate, polyglycolide-co-dioxanone, polyamide ester, polymaleic acid, polyphosphazene, polyanhydride, polysebacianhydride, polyhydroxyalkanoate, polybutyl hydroxide At least one selected from the group consisting of rate, polycyanoacrylate, and mixtures thereof may be preferably used.

In addition, the pore-forming agent may be preferably used at least one selected from the group consisting of sodium chloride, potassium chloride, calcium chloride, magnesium chloride, and mixtures thereof.

In addition, the step of preparing the biodegradable polymer solution may be performed by dissolving 30 to 80 parts by weight of the biodegradable polymer together with 50 to 100 parts by weight of a pore former in 100 parts by weight of dichloromethane.

In addition, when adding magnesium hydroxide having an average particle diameter of 100 to 700 μm to the prepared biodegradable polymer solution, it is preferable to add 30 to 80 parts by weight of the magnesium hydroxide with respect to 100 parts by weight of the dichloromethane. .

The magnesium hydroxide is preferably contained in an amount of 5 to 15 parts by weight based on 100 parts by weight of the normal Portland cement. When the content of the magnesium hydroxide is too small, there is a problem that the improvement effect may be insufficient, and when the content of the magnesium hydroxide is too large, there is a problem that the curing time is delayed or the price competitiveness may be lowered.

The aluminum nitride functions to improve excellent strength, interlayer adhesion, abrasion resistance, impact resistance, water tightness, water resistance, chemical resistance, rust prevention, waterproofness, anti-freezing, freeze-thaw resistance, and durability.

The above-described effect may be further improved by using the aluminum nitride powder having a surface modified with an organic acid.

More specifically, the aluminum nitride powder having the surface modified with an organic acid is prepared by mixing 0.1 to 7 parts by weight of an organic acid with respect to 100 parts by weight of ethanol to prepare a mixed solution; preparing a slurry by mixing 15 to 35 parts by weight of aluminum nitride powder with the mixed solution; heat-treating the slurry at 150 to 200° C. for 12 to 24 hours; and washing and drying the heat-treated slurry to obtain an aluminum nitride powder having a surface modified with an organic acid.

In this case, the organic acid is oxalic acid, malonic acid, sebacic acid, citric acid, tartaric acid, malic acid, acetic acid, and these At least one selected from the group consisting of a mixture of can be preferably used.

The aluminum nitride is preferably contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the normal Portland cement. When the content of the aluminum nitride powder is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the aluminum nitride powder is too large, there is a problem that price competitiveness may be lowered.

The silica sand serves to improve excellent strength and abrasion resistance.

The type of silica sand is not particularly limited as it is used in the art, but non-limiting examples of the silica sand include one or more kinds of silica sand selected from the group consisting of artificial silica sand, natural silica sand, colored silica sand, and mixtures thereof. can be used In addition, the silica sand having an average particle diameter of 0.1 to 2.5 mm may be preferably used.

The silica sand is preferably contained in an amount of 80 to 120 parts by weight based on 100 parts by weight of the normal Portland cement. When the content of the silica sand is too small, there is a problem that the above-mentioned improvement effect may be insufficient, and when the content of the silica sand is too large, there is a problem that adhesion and workability may be reduced.

In addition, another embodiment of the present invention is a flooring construction method using the eco-friendly polymer mortar flooring composition;

The eco-friendly polymer mortar flooring composition includes a flooring composition for undercoating and a flooring composition for topcoating;

The flooring construction method includes: a base surface treatment step of removing contaminants from the base surface, and repairing cracks or grooves to adjust the base surface; Undercoat construction step of applying the flooring composition for undercoating to the upper surface where the base surface treatment is completed; And it provides a flooring construction method comprising a topcoating step of applying the flooring composition for the topcoat to the top surface on which the undercoating is completed.

At this time, the application can be performed in a general manner such as a roller, a brush, and an airless construction method.

According to the eco-friendly polymer mortar flooring composition and the flooring construction method using the same according to an embodiment of the present invention, the adhesion to the floor surface such as concrete and cement is excellent to increase the strength of the concrete or cement surface, and the flooring composition for undercoating and By greatly improving the adhesion between the topcoating flooring compositions, lifting, peeling and dropping can be prevented, and tear resistance due to lateral force, impact resistance and durability are excellent. In addition, it can provide excellent waterproofness, water resistance, chemical resistance and abrasion resistance, and can prevent icing caused by snow and ice even in the winter season, and is environmentally friendly because harmful heavy metals are not detected without using volatile organic compounds there is

As mentioned above, although preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical spirit of the present invention. This is possible.

<Production Example 1>

Preparation of Pullulan Acetate Microspheres

To a solution dissolved by mixing formamide, pyridine and acetic anhydride in a volume ratio of 7: 1.5: 1.5 at a temperature of 50 ° C., pullulan (molecular weight 100,000 Da, Tokyo Chemical Industry) was added to completely dissolve and reacted for 24 hours. . After the reaction was completed, the solution was dropped into water to obtain a precipitate and purified, and then the final reaction product was freeze-dried to prepare pullulan acetate microspheres having an average particle diameter of 72 μm.

<Preparation Example 2>

Preparation of surface-modified magnesium hydroxide with polycaprolactone

The surface of magnesium hydroxide having an average particle diameter of 378 μm was modified with polycaprolactone. More specifically, 45 parts by weight of magnesium hydroxide is dissolved in 100 parts by weight of dichloromethane together with 55 parts by weight of polycaprolactone, and after ultrasonication at a temperature of 40 ° C., filtration and washing with water, washing, By drying at a temperature of 55° C., magnesium hydroxide having a surface-modified surface with polycaprolactone was prepared.

<Production Example 3>

Preparation of magnesium hydroxide surface-modified with porous polycaprolactone

55 parts by weight of polycaprolactone was dissolved in 100 parts by weight of dichloromethane together with 75 parts by weight of sodium chloride to prepare a biodegradable polymer solution.

In the biodegradable polymer solution prepared above, 45 parts by weight of magnesium hydroxide (average particle diameter: 378 μm) was added and dissolved, and then sonicated at a temperature of 40 ° C., filtered and washed with water, to wash residual sodium chloride and impurities. Then, by drying at a temperature of 55 ℃, to prepare a surface-modified magnesium hydroxide with porous polycaprolactone.

<Production Example 4>

Preparation of magnesium hydroxide surface-modified with porous polytrimethylene carbonate and polycaprolactone

33 parts by weight of polytrimethylene carbonate and 22 parts by weight of polycaprolactone were dissolved in 100 parts by weight of dichloromethane together with 75 parts by weight of sodium chloride to prepare a biodegradable polymer solution.

In the biodegradable polymer solution prepared above, 45 parts by weight of magnesium hydroxide (average particle diameter: 378 μm) was added and dissolved, and then sonicated at a temperature of 40 ° C., filtered and washed with water, to wash residual sodium chloride and impurities. Then, by drying at a temperature of 55 ℃, porous polytrimethylene carbonate and polycaprolactone to prepare a surface-modified magnesium hydroxide.

<Preparation Example 5>

Preparation of aluminum nitride powder whose surface is modified with organic acid

With respect to 100 parts by weight of ethanol, 5 parts by weight of oxalic acid was mixed to prepare a mixed solution. A slurry was prepared by mixing 25 parts by weight of a conventional aluminum nitride powder with the mixed solution. After the slurry was heat-treated at 170° C. for 24 hours, the heat-treated slurry was washed and dried to prepare an aluminum nitride powder whose surface was modified with oxalic acid.

<Examples 1 to 3 and Comparative Examples 1 to 2>

A flooring composition for undercoating and a comparative composition for undercoating were prepared containing a two-component water-soluble polymer resin in which the main agent and the curing agent mixed in the components and content ranges as shown in Table 1 were mixed in a 3: 1 volume ratio.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 topic
(weight%)
water 45 45 45 45 45 Water Soluble Epoxy Resin ⁽¹⁾ 42 42 42 42 42 Surfactant [n-dodecylamine] One One One - - polyoxyethylene cetyl ether - - - One One Performance improvement admixture 12 12 12 12 12 (parts by weight) Ethylene glycol diglycidyl ether 100 100 100 100 100 1,4-cyclohexanedimethanol diglycidyl ether 23 23 23 - 23 silane compound
[Formula 1-1] 12 12 12 - - Gamma-Aminopropyltrimethoxysilane - - - - 12 thiol compound
[Formula 2-1] 12 12 12 - - Pullulan acetate microspheres [Preparation Example 1] 3 3 3 - - hardener
(weight%) water 75 73 73 75 75 diethylene triamine 25 9 18 - - N-Aminoethyl piperazine - 18 9 - - isophoronediamine - - - 25 25

[화학식2-1]

상기 식에서, m은 1이다. ⁽¹⁾ KEM-128-70 (Kukdo Chemical)

[Formula 1-1]

[Formula 2-1]

In the above formula, m is 1.

<Examples 4 to 6 and Comparative Examples 3 to 4>

A two-component water-soluble polymer resin and an inorganic binder mixed in the components and content ranges shown in Table 2 below were mixed in a 1:2 weight ratio to prepare a flooring composition for topcoat and a comparative composition for topcoating.

division Example 4 Example 5 Example 6 Comparative Example 3 Comparative Example 4 Two-component water-soluble polymer resin Example 3 Comparative Example 1 Comparative Example 2 inorganic binder
(parts by weight) plain portland cement
(Powder: 4,530cm2/g) 100 100 100 100 100 Limestone Fine Powder ⁽¹⁾ 18 18 18 18 18 magnesium hydroxide 12
[Production Example 2] 12
[Production Example 3] 12
[Production Example 4] - 12
[Normal magnesium hydroxide] aluminum nitride 5
[normal
aluminum nitride] 5
[Production Example 5] 5
[Production Example 5] - - silica sand ⁽²⁾ 110 110 110 110 110 ⁽¹⁾ Fine limestone powder: Calcium carbonate (CaCO ₃ ) content of 88% by weight and fineness of 6,810 cm2/g is used.

⁽²⁾ Silica sand: Artificial silica sand with an average particle diameter of 2.0 mm is used.

The following test examples show experimental results of comparing the characteristics of the Examples and Comparative Examples according to the present invention in order to more easily grasp the characteristics of the Examples according to the present invention disclosed above.

<Test Example>

Performance evaluation of flooring composition for undercoating and comparative composition for undercoating

A test specimen for testing was prepared by applying and curing the flooring composition for undercoat prepared according to Examples 1 to 3 and the comparative composition for undercoat prepared according to Comparative Examples 1 and 2 to each separately prepared concrete specimen. Thereafter, performance evaluation was performed on the undercoating flooring composition and the undercoating comparative composition by measuring the physical properties of the test specimen according to the test items and test methods in Table 3 below.

Test Items Test Methods Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 adherence ASTM D 3359-09 ◎ ◎ ◎ × ○ ^* Water resistance KS M ISO 2812-1
(25℃, distilled water, 168H) clear clear clear × ○ ^* Salt water resistance KS M ISO 2812-1
(25°C, 10% NaOH, 168H) clear clear clear × × ^* Accelerated weather resistance KS F 2274
(WS-A type, 168H) clear clear clear × △ ^* Cold resistance Apply the following conditions sequentially
1) 20±2℃, 18h water immersion
2) - 20±2℃, 3h
3) (50±2℃, 3h) repeated 6 times clear clear clear △ △ Hardness ASTM D 2240-05 85 88 87 72 76 Abrasion resistance (mg) ASTM D 4060-10 12 8 5 31 25 Absorption rate (%) KS M 3015 23 19 16 52 47 smell Process test method for sanitary and safety standards of paper materials and products for water supply (2009) clear clear clear clear clear mercury [mg/L] Process test method for sanitary and safety standards of paper materials and products for water supply (2009) not detected not detected not detected not detected not detected TVOCs KS M ISO 11890-2 not detected not detected not detected not detected not detected ◎: Excellent ○: Good △: Normal ×: Poor

^* In the measurement results of water resistance, salt water resistance, accelerated weather resistance, and cold resistance, 'No abnormality' means that no external change or change in physical properties occurred in the coating layer after applying the conditions of the above experimental items.

As can be seen in Table 3, the flooring composition for undercoat prepared according to Examples 1 to 3 has excellent adhesion, water resistance, and salt water resistance compared to the comparative composition for undercoat prepared according to Comparative Examples 1 and 2 , it was confirmed to have accelerated weather resistance, cold resistance, hardness, abrasion resistance and water resistance. In addition, it was confirmed that the flooring composition for undercoating prepared according to Examples 1 to 3 had no odor and was environmentally friendly because heavy metals such as mercury and total volatile organic compounds (TVOCs) were not detected.

Performance evaluation of flooring composition for top coat and comparative composition for top coat

The flooring composition for undercoating prepared according to Example 3 was applied and cured on each separately prepared concrete specimen. Thereafter, the flooring composition for the top coating prepared according to Examples 4 to 6 and the comparative composition for the top coating prepared according to Comparative Examples 3 to 4 were applied to each specimen to which the flooring composition for undercoat prepared according to Example 3 was applied. A test specimen was prepared by coating and curing. Thereafter, for the test specimen, the performance evaluation was performed on the flooring composition for the topcoat and the comparative composition for the topcoat by measuring the physical properties according to the test items and test methods in Table 4 below.

Test Items Test Methods Example 4 Example 5 Example 6 Comparative Example 3 Comparative Example 4 compressive strength
(kgf/cm ² ) KS L 5105
(based on 14 days) 1784 1819 1857 872 1159 adhesion performance
(kgf/cm ² ) KS F 4937
(based on 14 days) 207 214 225 170 183 thickness reduction rate
(%) KS F 4937
(based on 14 days) 0.4 0.2 0.2 8.4 2.7 tensile strength
(kgf/cm ² ) KS F 3211
(based on 14 days) 458 473 487 314 405 chemical resistance Age 14 days, 20℃, 7 days, after immersion in drinking water, measure the weight change ◎ ◎ ◎ ○ ○ chemical resistance Age 14 days, 20℃, 7 days, after immersion in 5% saline, measure the weight change ◎ ◎ ◎ △ ○ chemical resistance Age 14 days, 20℃, 7 days, after immersion in 10% hydrochloric acid, the weight change is measured ◎ ◎ ◎ X △ chemical resistance Age 14 days, 20℃, 7 days, after immersion in 10% sulfuric acid, the weight change is measured ◎ ◎ ◎ X △ chemical resistance Age 14 days, 20℃, 7 days, after immersion in 10% acetic acid, the weight change is measured ◎ ◎ ◎ X △ chloride ion
penetration resistance
(Coulombs) KS F 4042 9 7 5 35 27 Freeze-thaw resistance (%) KS F 2560 94 95 97 82 87 impact resistance KS F 4937 clear clear clear offshoot clear Wheel load resistance performance_surface condition KS F 4937
(300kg, 80,000 times) clear clear clear leaving out clear Wheel load resistance performance_thickness reduction depth 0.5 0.3 0.2 2.5 1.9 watertight performance KS F 4937 not pitched not pitched not pitched pitcher generation not pitched pollutant
emission test KS F 4937
[TVOCs] not detected not detected not detected not detected not detected toluene not detected not detected not detected not detected not detected HCHO not detected not detected not detected not detected not detected ◎: Weight loss less than 1%/ ○: Weight loss 1-2%/ △: Weight loss 2-3%/ X: Weight loss 3% or more

As can be seen in Table 4, the flooring composition for the top coating prepared according to Examples 4 to 6 has excellent adhesion performance, abrasion resistance, and compressive strength, compared to the comparative composition for the top coating prepared according to Comparative Examples 3 to 4 , tensile strength, chemical resistance, chloride ion penetration resistance, freeze-thaw resistance, impact resistance, wheel load resistance, and watertight performance were confirmed. In addition, it was confirmed that the flooring composition for top coating prepared according to Examples 4 to 6 was environmentally friendly because total volatile organic compounds (TVOCs), toluene and formaldehyde (HCHO) were not detected.

As described above, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that all of the embodiments described above are illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention, rather than the above detailed description, all changes or modifications derived from the meaning and scope of the claims to be described later and their equivalents.

Claims (5)

An eco-friendly polymer mortar flooring composition comprising: a flooring composition for undercoating comprising a two-component water-soluble polymer resin;
The two-component water-soluble polymer resin may include a main agent comprising 10 to 50% by weight of a water-soluble epoxy resin, 0.5 to 10% by weight of a surfactant, 1 to 20% by weight of a performance improvement admixture, and the remainder of water; 1 to 30% by weight of the amine compound and a curing agent including the remaining amount of water in a volume ratio of 2 to 5:1;
The performance improvement admixture is
Based on 100 parts by weight of ethylene glycol diglycidyl ether, 10 to 30 parts by weight of 1,4-cyclohexanedimethanol diglycidyl ether, 1 to 15 parts by weight of a silane compound represented by Formula 1 below, and Formula 2 below 1 to 15 parts by weight of the indicated thiol compound and 0.1 to 5 parts by weight of pullulan acetate microspheres;
The inorganic binder is
Based on 100 parts by weight of normal Portland cement, 10 to 30 parts by weight of limestone fine powder, 5 to 15 parts by weight of magnesium hydroxide, 1 to 10 parts by weight of aluminum nitride, and 80 to 120 parts by weight of silica sand Eco-friendly polymer mortar flooring composition .
[Formula 1]

In the above formula,
R is an alkyl group having 1 to 6 carbon atoms,
n is an integer from 0 to 5;
[Formula 2]

In the above formula,
m is an integer of 1 or 2.
According to claim 1,
The water-soluble epoxy resin is
at least one epoxy resin selected from the group consisting of glycidyl ether type, glycidyl ester type, bisphenol A type, bisphenol F type, and mixtures thereof;
The amine compound is
at least one aliphatic amine compound selected from the group consisting of diethylene triamine, triethylene triamine, triethylene tetraamine, tetraethylene pentaamine, diethylaminopropylamine, and mixtures thereof; and at least one cyclic amine compound selected from the group consisting of N-aminoethyl piperazine, 1-aminopyrrolidine, 1-aminohomopiperidine, N-amino-N'-methylpiperazine, and mixtures thereof; 1: Eco-friendly polymer mortar flooring composition, characterized in that it is mixed in a weight ratio of 0.2 to 0.8.
According to claim 1,
The pullulan acetate microspheres have an average particle diameter of 50 to 100 μm;
Formamide, pyridine, and acetic anhydride at a temperature of 45 to 55 ℃ 4 to 8: 1 to 2: 1 to 2 volume ratio of formamide, 1 to 2: 1 to 2 volume ratio of the dissolved solution, adding pullulan to completely dissolve and react; Dropping the solution on which the reaction is completed into water to obtain a precipitate and purifying; And Eco-friendly polymer mortar flooring composition characterized in that it is prepared by a method comprising the step of freeze-drying the purified final reactant.
According to claim 1,
The magnesium hydroxide is magnesium hydroxide whose surface is modified with a porous biodegradable polymer;
Magnesium hydroxide whose surface is modified with a porous biodegradable polymer is
Dissolving the biodegradable polymer in dichloromethane together with a pore former to prepare a biodegradable polymer solution; Into the prepared biodegradable polymer solution, by introducing magnesium hydroxide having an average particle diameter of 100 to 700 μm and ultrasonicating at a temperature of 25 to 50 ° C., modifying the surface of the magnesium hydroxide into a biodegradable polymer; And the surface is modified with a porous biodegradable polymer by filtering and washing the magnesium hydroxide modified with a biodegradable polymer, washing the remaining pore former and impurities, and then drying at a temperature of 45 to 65 ° C. Eco-friendly polymer mortar flooring composition, characterized in that produced by a method comprising the step of producing magnesium hydroxide.
As a flooring construction method using the eco-friendly polymer mortar flooring composition according to any one of claims 1 to 4;
The eco-friendly polymer mortar flooring composition includes a flooring composition for undercoating and a flooring composition for topcoating;
The flooring construction method includes: a base surface treatment step of removing contaminants from the base surface, and repairing cracks or grooves to adjust the base surface; Undercoat construction step of applying the flooring composition for undercoating to the upper surface where the base surface treatment is completed; and a top coating step of applying the top coating composition to the top surface on which the bottom coating has been completed.