KR101776832B1 - The water absorption gelable and fire retardant acrylate back infusion grouting composition and the method of manufacturing the same - Google Patents

Abstract

The present invention relates to an absorbent gelling property and flame-retardant acrylate-based back side injection grouting agent and a manufacturing method thereof. According to an embodiment of the present invention, the absorbent gelling property and flame-retardant acrylate-based back side injection grouting agent comprises: an A solution which is generated by mixing and reacting with water, acrylamide, a boric acid, methylene-bisacrylamide, an acryl acid, ammonium persulfate, and hydroxyethyl methacrylate; a B solution which is generated by mixing and reacting with the water, polyvinyl alcohol, the acryl acid, magnesium hydroxide, sodium persulfate, and lithium silicate; and a C solution which is generated by mixing the water and triethanolamine. The present invention provides the back side injection grouting agent having excellent tensile strength and water resistance.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-absorbing and flame-retardant acrylate-based back-

The present invention relates to an absorbent gelling and flame-retardant acrylate-based back side injection molding machine and a method of manufacturing the same. More particularly, the present invention relates to a water- , Excellent tensile strength and excellent durability because it is not broken easily, and it has excellent water permeation resistance because it does not deteriorate in gelling property upon initial absorption and reabsorption after drying, and is easy to control the curing time, Flame retardant acrylate based back side injection molding agent and a method for producing the same, which are excellent in flame retardancy using an inorganic material.

Generally, in order to repair leakage through cracks or deterioration of concrete structures, an organic synthetic polymer resin-based index material having reactivity with water such as water-soluble urethane and water-soluble epoxy, etc., and acrylic resin, ethylene-vinyl acetate (EVA) A bentonite mineral particle having a characteristic of expanding its volume by reacting with water is mixed with an organic compound such as asphalt, urethane, epoxy resin, or the like in cement A method of hardening, foaming, or swelling an index material added to an inorganic mixture to which a water-soluble rubber admixture such as acrylic, EVA, SBR, etc. is added, is injected into the back of a concrete structure, There is an injection method using an acrylic carpentry.

The acrylic water-repellent agent has a low viscosity of the composition and is excellent in permeability to cracks and cracks in the ground layer, free to control the curing time, to form an impervious cured material, It is widely used for the order and reinforcement of the ground and the index of various concrete structures.

The acrylic-based water-repellent agent can be classified into an acrylate-based acrylic acid-based acrylic acid-based acrylic acid-based acrylic acid based acrylate-based acrylate-based acrylic acid based acrylic acrylate base and an acrylate based acrylate based acrylic acid based acrylic salt based acrylate base.

The acrylic amide-based water-repellent agent is prepared by mixing acrylamide as a monomer and N, N'-methylenebisacrylamide as a crosslinking agent and dissolving it in water to prepare an aqueous solution, adding a persulfate compound and an amine compound as a redox polymerization catalyst, And a chain hydrolyzate is formed by causing a chain polymerization reaction in the ground.

Although the acrylamide-based water-repellent agent is excellent in physical properties and durability of the hydrogel produced, it is evaluated to be the best among the water-based agents, but the toxicity of acrylamide and N, N'- methylenebisacrylamide as main components is very strong, There is a possibility that use is limited.

The acrylate-based water-repellent agent is prepared by mixing mono-valent such as sodium and potassium of acrylic acid and methacrylic acid and divalent metal salt such as calcium and magnesium as main components and hydrophilic polyfunctional compound such as polyethylene glycol diacrylate as cross- And a peroxide compound and an amine compound as a redox polymerization catalyst are injected into the ground to cause a chain polymerization reaction in the soil to form a hydrogel, thereby exhibiting the order and exponential effect.

Although the harmfulness of the acrylate-based water-repellent agent is relatively low, there is a problem in application because the compression and bending strength of the hydrogel to be produced is insufficient.

The acrylamide-based and acrylate-based mixed systems are suitable for mixing the acrylamide-based and acrylate-based components to solve the problems of both of them. However, the toxicity and physical properties of the acrylamide-based and acrylate- .

In the prior art relating to the above-mentioned acrylic water-repellent agent, Korean Patent Registration No. 10-0730796 discloses that a hydrous gel is formed by adding a peracylate compound and an amine compound to an acrylate-based compound as a redox polymerization catalyst, The present invention relates to an acrylate-based water-repellent agent for use in the order and strengthening of an underground ground and an index of a concrete structure of a tank, a tunnel, and a sewer pipe, wherein the acrylate-based compound is an acrylic acid metal salt prepared by adding acrylic acid and methacrylic acid to a metal hydroxide aqueous solution And a hydrophilic epoxy diacrylate compound containing an amine group as a cross-linking agent.

Korean Patent No. 10-0948348 discloses an acrylic acid sequester which is a hydrophilic epoxy diacrylate compound containing an acrylic acid metal salt and an amine group as a crosslinking agent, which is produced by adding acrylic acid and methacrylic acid to a metal hydroxide aqueous solution.

In addition, in Korean Patent No. 10-068282, a monomer aqueous solution having a concentration of 10 to 40% is prepared by adding 1 to 10% by weight of a polymerization crosslinking agent to the total weight of the water-soluble acrylate monomer and the water-soluble acrylate monomer, A solution prepared by adding 0.3 to 5 wt% of a tertiary amine-based catalyst as a reducing catalyst to the total weight of the monomer aqueous solution, and a solution A comprising 95 to 99.7 wt% of water, a solution of persulfate or peroxide And the B liquid prepared by mixing the initiator at 0.3 to 5 wt%, and mixing the A liquid and the B liquid at a volume ratio of 1: 1 into the cracks of the soft carbon layer and into the joint layer, the viscosity of the mixture is low, A gelling acrylate-based injection agent which is cured in a gel state by a self-polymerization cross-linking reaction in a state in which it is uniformly permeated through the gelling agent.

In addition, Korean Patent No. 10-1590345 discloses a two-component type acrylic sealant composition for repairing leakage water, wherein acrylic acid metal salts prepared by adding acrylic acid and methacrylic acid to a metal hydroxide aqueous solution are mixed with trimethylolpropane triacrylate- A first solution bridged using an acrylate resin and a second solution comprising a phosphorus sulfate as a stabilizer and a persulfate compound as a hydrate of ammonium persulfate, potassium persulfate, or sodium persulfate, and a phosphate solution as a stabilizer, 2 solution is separately stored and mixed at a weight ratio of 1: 1 in the field. The concentration of the acrylic acid metal salt in the first solution is 30 to 40% in the aqueous solution, and the non-expandable epoxy acrylate The resin is 5 to 10% by weight based on the weight of the acrylic acid metal salt. In the second solution, The weight ratio of the stabilizer to the weight of the persulfate compound in the second solution is 5 to 10% by weight based on the total weight of the acrylic acid metal salt and the non-expandable epoxy acrylate resin participating in the polymerization reaction in the first solution, Is 1 to 5% by weight based on the total weight of the composition.

However, these patents have the merits of good water solubility, elasticity and quickness, but using epoxy acrylate resin, they have insufficient tensile strength and are easily broken. When re-absorption after drying, the gelatinization property is lowered, There was a serious problem in workability, and there were various disadvantages such as a problem of deterioration due to excessive shrinkage during drying, and a problem of being vulnerable to fire due to no flame retardancy.

In order to solve the above problems, the present invention has been made to solve the above-mentioned problems, and has as its object to provide a water-repellent, water-repellent, And is excellent in water resistance because it does not deteriorate in gelling property when re-absorbed after drying, easy to control the curing time, easy to work, has a shrinkage rate lower than that of the conventional carpets, Absorbing gelation property and a flame-retardant acrylate-based back side injection molding agent.

In order to solve the above-mentioned problems, the present invention provides a method for producing a water-soluble polymer, which comprises mixing water, acrylamide, boric acid, N, N'- methylenebisacrylamide, acrylic acid, ammonium persulfate, (Hydroxyethyl methacrylate), and a mixture of water, polyvinyl alcohol, acrylic acid, magnesium hydroxide, and sodium persulfate, which are prepared by homogeneously mixing and reacting hydroxyethyl methacrylate persulfate, and Lithium silicate, and a C solution obtained by homogeneously mixing water and triethanolamine (tanol amine). The solution A was added to the solution A, The present invention also provides an absorbent gelling property and a flame-retardant acrylate-based back side injection molding composition which are mixed by homogeneous mixing and then injected by mixing the B liquid.

The present invention also relates to a composition comprising 65 g of water, 15 g of acrylamide, 1.5 g of boric acid, 1 g of N, N'-methylenebisacrylamide, 12 g of acrylic acid, 12 g of ammonium persulfate ), 0.1 g of hydroxyethyl methacrylate and 6.5 g of hydroxyethyl methacrylate were mixed homogeneously to obtain a solution A; 70 g of water, 10 g of polyvinyl alcohol, 12 g of acrylic acid, and 20 g of water were added to 80 g of the reaction mixture obtained by homogeneous mixing reaction of 5 g of sodium persulfate and 17 g of lithium silicate and lithium silicate (17 g), water 20 g, triol amine (tanol amine) 0.2 g of the above liquid C was added to 100 g of the liquid A and homogenized, and then 100 g of the liquid B was mixed and injected. The absorbent gelling and flame-retardant acrylate system Backside note And a difference in hand solving means of the problem.

The present invention also relates to a process for preparing a first mixture by dissolving acrylamide in water and then dissolving the mixture thoroughly at 40 ° C in the presence of boric acid and N, N'-methylenebisacrylamide Next, the reaction solution was prepared by mixing acrylic acid (Acrylic Acid) in water, adding ammonium persulfate and dissolving it, and slowly adding hydroxyethyl methacrylate to prepare a first reaction solution, Preparing a solution A by mixing and stirring the mixed solution and the first reaction solution;

 Polyvinyl alcohol is added to water and sufficiently dissolved to prepare a second mixed solution. Then, acrylic acid is added to the water and stirred. Then, magnesium hydroxide is dispersed in water and reacted while slowly adding it Preparing a second reaction solution, mixing the second mixture solution and the second reaction solution, sodium persulfate and lithium silicate to prepare a solution B, and

Preparing a liquid C in which water is homogeneously mixed with triethanolamine (tanol amine);

And adding the liquid C to the liquid A, mixing the liquid B with the liquid B, and mixing the liquid B with the liquid B. The method of manufacturing the absorbent gelling material and the flame-retardant acrylate-

The absorbent gelling property and the flame retardant acrylate-based back side injection molding composition of the present invention are used for repairing water-repellent or water-repellent construction or building structure and have water-solubility, elasticity and suppleness and have excellent tensile strength, And is excellent in water resistance because it does not deteriorate in gelling property upon initial absorption and re-absorption after drying, easy workability due to easy control of curing time, shrinkage rate upon drying is smaller than that of conventional carpets, It has an excellent effect of using flame retardancy.

In order to solve the above-mentioned problems, the present invention provides a method for producing a water-soluble polymer, which comprises mixing water, acrylamide, boric acid, N, N'- methylenebisacrylamide, acrylic acid, ammonium persulfate, (Hydroxyethyl methacrylate), and a mixture of water, polyvinyl alcohol, acrylic acid, magnesium hydroxide, and sodium persulfate, which are prepared by homogeneously mixing and reacting hydroxyethyl methacrylate persulfate, and Lithium silicate, and a C solution obtained by homogeneously mixing water and triethanolamine (tanol amine). The solution A was added to the solution A, And then mixed with the liquid B to be injected thereinto. The present invention is characterized by an absorbent gelling property and a flame-retardant acrylate-based back side injection molding agent.

The present invention also relates to a composition comprising 65 g of water, 15 g of acrylamide, 1.5 g of boric acid, 1 g of N, N'-methylenebisacrylamide, 12 g of acrylic acid, 12 g of ammonium persulfate ), 0.1 g of hydroxyethyl methacrylate and 6.5 g of hydroxyethyl methacrylate were mixed homogeneously to obtain a solution A; 70 g of water, 10 g of polyvinyl alcohol, 12 g of acrylic acid, and 20 g of water were added to 80 g of the reaction mixture obtained by homogeneous mixing reaction of 5 g of sodium persulfate and 17 g of lithium silicate and lithium silicate (17 g), water 20 g, triol amine (tanol amine) 0.2 g of the above liquid C was added to 100 g of the liquid A and homogenized, and then 100 g of the liquid B was mixed and injected. The absorbent gelling and flame-retardant acrylate system Backside note The tea handmade characterized in technology configuration.

The present invention also relates to a process for preparing a first mixture by dissolving acrylamide in water and then dissolving the mixture thoroughly at 40 ° C in the presence of boric acid and N, N'-methylenebisacrylamide Next, the reaction solution was prepared by mixing acrylic acid (Acrylic Acid) in water, adding ammonium persulfate and dissolving it, and slowly adding hydroxyethyl methacrylate to prepare a first reaction solution, Preparing a solution A by mixing and stirring the mixed solution and the first reaction solution;

 Polyvinyl alcohol is added to water and sufficiently dissolved to prepare a second mixed solution. Then, acrylic acid is added to the water and stirred. Then, magnesium hydroxide is dispersed in water and reacted while slowly adding it Preparing a second reaction solution, mixing the second mixture solution and the second reaction solution, sodium persulfate and lithium silicate to prepare a solution B, and

Preparing a liquid C in which water is homogeneously mixed with triethanolamine (tanol amine);

And adding the liquid C to the liquid A and homogeneously mixing the liquid C and then mixing the liquid B with the liquid A. The method of manufacturing the absorbent gelling material and the flame-retardant acrylate-

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[Absorbing Gelation and Flame Retardancy Acrylate series Backside injection Handmade manufacture]

(Liquid A)

15 g of acrylamide was dissolved in 40 g of water and sufficiently dissolved. Then, 1.5 g of boric acid and 1 g of N, N'-methylenebisacrylamide were added and completely dissolved at 40 ° C. to prepare a first mixture , 12 g of acrylic acid was mixed with 25 g of water and then 0.1 g of ammonium persulfate was added thereto and dissolved. 6.5 g of hydroxyethyl methacrylate was slowly added thereto to react the first reaction solution, And the first mixture solution and the first reaction solution were mixed and stirred to prepare solution A.

(Preparation of liquid B)

 10 g of polyvinyl alcohol was added to 40 g of water and sufficiently dissolved to prepare a second mixed solution. Then, 12 g of acrylic acid was added to water 20, and 5 g of magnesium hydroxide was dispersed in 10 g of water Then, a second reaction liquid was prepared by reacting while slowly adding thereto, and 80 g of the second mixed solution and 3 g of sodium persulfate and 17 g of lithium silicate were mixed and stirred to prepare liquid B.

(C solution preparation)

80 g of triethanolamine (tanol amine) was homogeneously mixed with 20 g of water to prepare Solution C.

(Manufactured by hand)

To 100 g of Solution A, 0.2, 1, 2 and 3 g of Solution C were respectively added and homogeneously mixed. Then, 100 g of Solution B was mixed to prepare a homogenizer having different gelation time.

The physical properties in the state of forming the hydrogel of the gelling agent having different gelation time were measured and shown in Table 1 below.

Metrics C solution 0.2g C solution 1g C solution 2g C solution 3g Viscosity 2.5 cps 2.2 cps 2.1 cps 2.0 cps pH 9.4 9.6 9.7 9.8 Gel time 170 sec 150 sec 140sec 120 sec Function gel tensile strength 1.9 Kgf / cm2 1.9 Kgf / cm 2 1.9 Kgf / cm2 1.9 Kgf / cm2 Function gel permeability coefficient 3.2 × 10 ^-8 cm / sec 3.2 × 10 ^-8 cm / sec 3.2 × 10 ^-8 cm / sec 3.2 × 10 ^-8 cm / sec Flammability Melting, no extinction Melting, no extinction Melting, no extinction Melting, no extinction

* Flame resistance test is conducted by KS F 2271 (6 minutes).

As shown in Table 1, the absorbent gelling property and the flame-retardant acrylate-based back side injection molding composition of the present invention have a very low viscosity and can be evenly packed between cracks and crevices, and have excellent tensile strength in a hydrogel state, It is possible to control the gelation time according to the addition amount of the solution C.

In addition, the absorbent gelling acrylate-based back side injection molding mortar of the present invention contains lithium silicate as an inorganic component and has an excellent flame retardancy. This is because it has a flame retardant effect due to the solid content of the inorganic base, It can be seen that the shrinkage ratio during drying decreases.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (3)

(N, N'-methylenebisacrylamide), acrylic acid, ammonium persulfate, hydroxyethyl methacrylate (NMP), and the like. ), Water, Polyvinyl alcohol, Acrylic acid, Magnesium hydroxide, Sodium persulfate and Lithium silicate were prepared by homogeneous mixing reaction. (C) liquid prepared by homogeneously mixing and reacting water, and water (C) mixed homogeneously with triethanolamine (tanol amine). The liquid C is added to the liquid A, Absorbing gelatinizable and flame-retardant acrylate-based back side injection molding agent
The method according to claim 1,
The absorbent gelling property and the flame-retardant acrylate back side injection molding agent were prepared by mixing 65 g of water, 15 g of acrylamide, 1.5 g of boric acid, 1 g of N, N'-methylenebisacrylamide, ), 10 g of polyvinyl alcohol, 10 g of acrylic acid (manufactured by Dainippon Ink and Chemicals, Incorporated), 10 g of water, 10 g of water, 12 g of ammonium persulfate, 0.1 g of ammonium persulfate and 6.5 g of hydroxyethyl methacrylate, (B) obtained by homogeneously mixing 3 g of sodium persulfate and 17 g of lithium silicate in 80 g of a reaction mixture obtained by homogeneously mixing and reacting 12 g of sodium hydroxide, 12 g of acetic acid and 5 g of magnesium hydroxide, 20 g of water and 80 g of triethanolamine (tanol amine) were homogeneously mixed. To 100 g of the solution A, 0.2 to 3 g of the solution C was added and homogeneously mixed. Then, 100 g of the solution B was mixed and injected doing Absorbing gelling property and a flame-retardant acrylate-based back side injection molding agent
Acrylamide was added to the water to sufficiently dissolve it. Boric acid and N, N'-methylenebisacrylamide were then added to completely dissolve the mixture at 40 ° C. to prepare a first mixture. Acrylic acid is mixed with ammonium persulfate and the mixture is dissolved. Hydroxyethyl methacrylate is slowly added thereto to prepare a first reaction solution, and the first mixture solution and the first reaction solution To prepare a solution A; and
Polyvinyl alcohol is added to water and sufficiently dissolved to prepare a second mixed solution. Then, acrylic acid is added to the water and stirred. Then, magnesium hydroxide is dispersed in water and reacted while slowly adding it Preparing a second reaction solution, mixing the second mixture solution and the second reaction solution, sodium persulfate and lithium silicate to prepare a solution B, and
Preparing a liquid C in which water is homogeneously mixed with triethanolamine (tanol amine);
The method of claim 1 or 2, further comprising the step of adding the liquid C to the liquid A and homogeneously mixing the liquid C and then mixing the liquid B with the absorbent gelling and flame-retardant acrylate- Handmade manufacturing method