KR102262833B1 - Polyurea crack reinforcing agent and reinforcing, waterprofing and protecting against corrosion using thereof - Google Patents

Abstract

According to the present invention, provided is a crack repair agent using polyurea, including: a polyurea solution (A) prepared by mixing isocyanurate with shodium lactate ethylsilanol, 1,5-naphthalene diisocyanate, methyl vinyl ether, aluminum chloride and polyoxyethylene linoleate; and a curing agent solution (B) prepared by mixing iodobenzene with phenylhydrazine, cetylalcohol ethylene propylene copolymer, cyclopentane and diethyl ether.

Description

Polyurea crack reinforcing agent and coating, waterproofing and anticorrosive method using polyurea {Polyurea crack reinforcing agent and reinforcing, waterprofing and protecting against corrosion using thereof}

The present invention relates to a crack repair agent using polyurea and a coating, waterproofing and anticorrosive method using the same, and more particularly, isocyanurate, shodium lactate methylsilanol, 1,5-naphthalene diisocyanate, methyl vinyl ether , aluminum chloride and polyoxyethylene linoleate to prepare polyurea solution A, iodobenzene, phenylhydrazine, cetyl alcohol ethylene propylene copolymer, cyclopentane and diethyl ether were mixed to prepare curing agent solution B , It relates to a crack repair agent using polyurea mixed with solution A and solution B in a predetermined volume ratio, and to a coating, waterproofing and anticorrosive method using the same.

In order to prevent corrosion or damage caused by moisture in the concrete structure, it is required to waterproof or anticorrosive the surface of the concrete structure. This waterproofing treatment is generally made by applying a waterproofing resin to the surface of the concrete structure.

As disclosed in Korean Patent Registration No. 10-1215403, a conventional general method for waterproofing the surface of a concrete structure includes a pretreatment step of removing and planarizing contaminants on the surface of a structure to be waterproofed, and coating a primer on the pretreated surface to form a primer layer. It consists of forming and applying polyurea on the primer layer.

In general, these molecules of polyurea are composed of factors that increase flexibility and factors that increase hardness are evenly distributed.

As is generally known, the factor that increases flexibility is that it has a low glass transition temperature, such as polyether, polyester, polyalkyldiol, etc., which increases flexibility when the weight average molecular weight is between 400 and 5000, and high Tg to increase hardness. When the semi-crystalline aromatic diisocyanate binds to a low molecular weight chain extender, the hardness increases.

In general, polyurea is synthesized with diamines having a chain extension and low molecular weight to make a urea unit. Accordingly, the properties of polyurea are widely changed depending on the selected material, molecular weight, or other various factors such as the reaction ratio. That is, it is possible to change its properties from a brittle material to a hard material or a soft material, and furthermore, to a material having a certain viscosity. In particular, in the case of polyurea, since the amide ester bonds of fatty acids have mixed bonds, the properties at high temperatures have intermediate properties between those polyesters and polyamides.

The synthesis of polyurea can be divided into two large areas: addition reaction and condensation reaction. The addition reaction occurs when the unsaturated monomer reacts in the reaction initiation stage, development stage, and termination stage. Usually, monomers are simple molecules with double bonds, and in the initiation stage, one of the two double bonds is broken and the reaction proceeds rapidly until the unreacted monomer is almost lean.

In most cases, the addition reaction proceeds without the formation of by-products. A condensation or step-growth reaction occurs when monomers react with a molecule with a double functional group in a step made to form a chain of a polymer. This is similar to a condensation reaction between molecules having a small molecular weight. At this time, substances such as water and carbon dioxide, which are small molecules, are also removed.

The addition reaction can be divided into homogeneous polymers or copolymers. The microscopic form of the copolymer can be divided into random, crossed, and lumped forms, but there are differences depending on the reaction conditions, concentration, and the reactivity ratio of the monomers. Moreover, it is more difficult to control the molecular weight or molecular weight distribution after the reaction of polymers, which are final reaction products, than the condensation reaction controlled using a reagent that changes the chain shape. The control of reactivity can be controlled by anionic polymerisation, and in some cases the synthesis of nearly single chain distributions is possible. Condensation reaction is also used to make copolymer polymer materials. Monomers having double functional groups are used to make chain polymers, and those having triple or more functional groups can form a cross-linked polymer network in three-dimensional space.

Polyurea is a high molecular material with elastomeric properties formed by the reaction of a polyoxyether polyamine mixture having a functional group and an isocyanate prepolymer. Because of the rapid reactivity of amine and isocyanate, it cannot be generally mixed and used at room temperature. proceed with the work And since polyurea has the same elastomeric properties as synthetic rubber, it has low flame retardancy and is vulnerable to fire.

Therefore, an object of the present invention is to prepare a polyurea solution A by mixing isocyanurate, shodium lactate methylsilanol, 1,5-naphthalene diisocyanate, methyl vinyl ether, aluminum chloride and polyoxyethylene linoleate, and iodine After preparing curing agent solution B by mixing dobenzene, phenylhydrazine, cetyl alcohol ethylene propylene copolymer, cyclopentane and diethyl ether, a crack repair agent using polyurea obtained by mixing solution A and solution B in a predetermined volume ratio, and this It is to provide a coating, waterproofing and anticorrosive construction method using.

On the other hand, the object of the present invention is not limited to the object mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

To this end, according to the present invention, polyurea solution A prepared by mixing isocyanurate with shodium lactate methylsilanol, 1,5-naphthalene diisocyanate, methyl vinyl ether, aluminum chloride and polyoxyethylene linoleate, and ; There is provided a crack repair agent using polyurea containing a curing agent B solution prepared by mixing iodobenzene with phenylhydrazine, cetyl alcohol ethylene propylene copolymer, cyclopentane and diethyl ether.

Here, solution A is 70-80 parts by weight of shodium lactate methylsilanol, 60-70 parts by weight of 1,5-naphthalene diisocyanate, 50-60 parts by weight of methyl vinyl ether, aluminum chloride in 100 parts by weight of isocyanurate. It is preferable that 40-50 parts by weight and 20-30 parts by weight of polyoxyethylene linoleate are mixed and reacted for 5-7 hours after heating at a temperature of 80°C-120°C.

In addition, liquid B is mixed with 100 parts by weight of iodobenzene, 50-60 parts by weight of phenylhydrazine, 40-50 parts by weight of cetyl alcohol ethylene propylene copolymer, 30-40 parts by weight of cyclopentane, and 10-20 parts by weight of diethyl ether. It is preferable to be manufactured.

In addition, it is preferable that the liquid A and the liquid B are prepared by mixing in a volume ratio of 5:5 to 7:3.

On the other hand, according to the present invention, the step of pre-treatment of the construction surface; manufacturing a crack repair agent using polyurea as described above; There is provided a painting, waterproofing and anticorrosive method using a crack repair agent using polyurea, which includes the step of applying or spraying a cracking agent using polyurea to a predetermined thickness on the construction surface by an application or spraying means.

Therefore, according to the present invention, polyurea solution A is prepared by mixing isocyanurate, shodium lactate methylsilanol, 1,5-naphthalene diisocyanate, methyl vinyl ether, aluminum chloride and polyoxyethylene linoleate, and iodine Dobenzene, phenylhydrazine, cetyl alcohol ethylene propylene copolymer, cyclopentane and diethyl ether were mixed to prepare curing agent solution B, and then solution A and solution B were mixed in a predetermined volume ratio to provide excellent water retention, waterproof and corrosion resistance. reinforcement may be possible.

On the other hand, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Hereinafter, preferred embodiments of the present invention will be described in detail.

The crack repair agent using polyurea according to a preferred embodiment of the present invention is basically, isocyanurate, shodium lactate methylsilanol, 1,5-naphthalenediisocyanate, methyl vinyl ether, aluminum chloride and polyoxyethylene linol. Polyurea solution A prepared by mixing the rate, and curing agent solution B prepared by mixing iodobenzene with phenylhydrazine, cetyl alcohol ethylene propylene copolymer, cyclopentane and diethyl ether is prepared by mixing in a predetermined volume ratio.

As a remedy, the crack repair agent using polyurea of the present invention is 70-80 parts by weight of shodium lactate methylsilanol, 60-70 parts by weight of 1,5-naphthalene diisocyanate, methylvinyl in 100 parts by weight of isocyanurate. 50-60 parts by weight of ether, 40-50 parts by weight of aluminum chloride, and 20-30 parts by weight of polyoxyethylene linoleate are mixed, heated at a temperature of 80°C-120°C, and reacted for 5-7 hours to prepare polyurea solution A and 50-60 parts by weight of phenylhydrazine, 40-50 parts by weight of cetyl alcohol ethylene propylene copolymer, 30-40 parts by weight of cyclopentane, and 10-20 parts by weight of diethyl ether are mixed with 100 parts by weight of iodobenzene, curing agent B solution After this preparation, the liquid A and the liquid B are prepared by mixing in a volume ratio of 5:5 to 7:3.

Here, the parts by weight of the compositions of the solution A are based on 100 parts by weight of isocyanurate, and the parts by weight of the compositions of the solution B are based on 100 parts by weight of iodobenzene.

On the other hand, in the method for producing a crack repair agent using polyurea according to a preferred embodiment of the present invention, 70-80 parts by weight of shodium lactate methylsilanol, 60- 1,5-naphthalene diisocyanate in 100 parts by weight of isocyanurate 70 parts by weight, 50-60 parts by weight of methyl vinyl ether, 40-50 parts by weight of aluminum chloride, and 20-30 parts by weight of polyoxyethylene linoleate are mixed, heated at a temperature of 80°C-120°C, and reacted for 5-7 hours A step of preparing a polyurea solution A, and 50-60 parts by weight of phenylhydrazine, 40-50 parts by weight of cetyl alcohol ethylene propylene copolymer, 30-40 parts by weight of cyclopentane, and 10 parts by weight of diethyl ether in 100 parts by weight of iodobenzene 20 parts by weight are mixed to prepare a curing agent solution B, and the solution A and solution B are mixed in a volume ratio of 5:5 to 7:3.

Here, the parts by weight of the compositions of the solution A are based on 100 parts by weight of isocyanurate, and the parts by weight of the compositions of the solution B are based on 100 parts by weight of iodobenzene.

Isocyanurate is a material that provides adsorption and adhesion to cracks such as concrete, etc., and it speeds up the reaction rate of a mixture or composition of the subject A solution and the curing agent B solution, so that the mixture is converted into a prepolymer within a short time. It serves the function of terminating the reaction.

Shodium lactate methylsilanol is a material that determines the reaction time with the above compositions and provides an adsorption function, and is mixed in 70-80 parts by weight based on 100 parts by weight of the isocyanurate, but when it exceeds the above weight, Since the reaction rate of the compositions is too fast, the stirrability and workability are lowered, and when the amount is less than the above weight part, the reaction rate of the compositions becomes too slow and the working time increases. It is preferred that parts by weight of the range be maintained.

1,5-naphthalene diisocyanate is a material that reacts with the above compositions to form a coating layer, and 60-70 parts by weight is mixed based on 100 parts by weight of the isocyanurate. Since it becomes too large and the workability is reduced, and if it is less than the said weight part, there exists a problem that adhesive strength is reduced, it is preferable to maintain the weight part in the limited range as mentioned above.

Methyl vinyl ether is a material that determines the function of improving the adhesive strength of the coating film, that is, mechanical properties, and 50-60 parts by weight is mixed based on 100 parts by weight of the isocyanurate. Since the viscosity of is increased, stirring operation is inconvenient, and when the amount is less than the above weight part, the storage stability of the composite is poor and the adhesive strength of the coating layer is lowered. Therefore, it is preferable to maintain the weight part in the limited range as described above. Do.

Aluminum chloride is a material that provides adhesion to cracks such as concrete, and 40-50 parts by weight is mixed based on 100 parts by weight of the isocyanurate. Since workability is deteriorated, and since there is a problem in that the workability is easily peeled off from the concrete surface when it is less than the above weight part, it is preferable to maintain the weight part in the above range.

Polyoxyethylene linoleate is a material that improves agitation efficiency by allowing the diffusion and base of the compositions to be removed when mixing solution A and solution B. 20-30 parts by weight is mixed based on 100 parts by weight of isocyanurate. , since physical properties such as overall viscosity and mixing ratio of the crack repair agent for repair, waterproofing and anticorrosion are lowered when it is out of the above weight part, it is preferable that the weight part in the above range is maintained.

On the other hand, the liquid A is isocyanurate, after mixing shodium lactate methylsilanol, 1,5-naphthalene diisocyanate, methyl vinyl ether, aluminum chloride and polyoxyethylene linoleate, 80 ℃-120 ℃ It is heated to a temperature and reacted for 5-7 hours to be prepared.

Here, limiting the temperature at which the compositions of the liquid A are mixed and dropped to 80° C.-120° C. is the dropping temperature, that is, when the stirring temperature is lower than the above temperature, the swelling rate is lowered, and when the stirring temperature is higher than the above temperature, and Since swelling occurs, it is preferable to maintain the stirring temperature in the limited range as described above.

In addition, limiting the time for which the compositions of the solution A are dropped to 5-7 hours is that, if the dropping time, that is, the stirring time is shorter than the above time, the swelling is not good, and if the stirring time is longer than the above time, there is a problem that the viscosity is high. , it is preferable that the stirring time in the limited range as described above is maintained.

Iodobenzene is a two-component cross-linked synthetic resin coating that provides waterproofness by increasing adhesion during waterproofing and preventing layer separation during storage.

Phenylhydrazine is a material that allows the compositions of solution A and solution B to cure quickly when waterproofing the coating film, and 50-60 parts by weight is mixed based on 100 parts by weight of the iodobenzene. If the main component polymer contains pigment properties during storage even before being mixed with the main component A solution, it reacts with the pigment property composition and hardens, and when mixed with the main component A solution, it is stirred when mixed with more than the above weight part Since there is a problem that the efficiency is lowered, it is preferable to have a limited weight part as described above.

The cetyl alcohol ethylene propylene copolymer is a material for super-fast curing when waterproofing a coating film together with the phenylhydrazine, and 40-50 parts by weight is mixed based on 100 parts by weight of the iodobenzene. Since there is a problem in that the stirrability is lowered, and the mixing force is increased and the miscibility with the solution A is reduced when the mixture is mixed more than the above weight parts, it is preferable to have the limited weight parts as described above.

Cyclopentane is a material that prevents carbonization and enables self-leveling when spraying and applying the A and B solutions, and is mixed in 30-40 parts by weight based on 100 parts by weight of the iodobenzene, less than the above parts by weight. When mixed, the anti-carbonization property is lowered and partial cracks are rather generated, resulting in lower durability, and when mixed more than the above weight part, carbonization prevention properties and flatness are increased, and there is a problem in that flatness is rather reduced during partial cracking. It is preferable to have parts by weight.

Diethyl ether is a substance that controls the pot life when spraying and applying the liquid A and the liquid B, and 10-20 parts by weight is mixed based on 100 parts by weight of the iodobenzene. This is too long, the working time is increased, and when mixed more than the above weight parts, there is a problem that the viscosity of the curing agent B solution is too high, so that spraying and coating operations are impossible, it is preferable to have a limited weight part as described above.

On the other hand, the main agent solution A and the curing agent solution B are mixed in a volume ratio of 5:5 to 7:3. If the volume ratio of the solution A and the solution B is out of the above range, the curing time is adjusted and the weight average molecular weight It is preferable to mix in a volume ratio in the limited range as described above, because there are problems in that there are problems in that there are many cracks and deterioration of workability due to poor curing, lifting, and deterioration of physical properties due to difficulty in control.

Hereinafter, the effect of the crack repair agent using polyurea according to a preferred embodiment of the present invention will be described with reference to specific examples.

To 100 parts by weight of isocyanurate, 60 parts by weight of shodium lactate methylsilanol, 50 parts by weight of 1,5-naphthalene diisocyanate, 40 parts by weight of methyl vinyl ether, 30 parts by weight of aluminum chloride and 10 parts by weight of polyoxyethylene linoleate After mixing and heating at a temperature of 80° C., the mixture was reacted for 5 hours to prepare a polyurea solution A, and 100 parts by weight of iodobenzene, 70 parts by weight of phenylhydrazine, 60 parts by weight of cetyl alcohol ethylene propylene copolymer, 50 parts by weight of cyclopentane and 30 parts by weight of diethyl ether to prepare a curing agent solution B, and then the solution A and solution B are mixed in a volume ratio of 5:5 to prepare a crack repair agent using polyurea.

To 100 parts by weight of isocyanurate, 75 parts by weight of shodium lactate methylsilanol, 65 parts by weight of 1,5-naphthalene diisocyanate, 55 parts by weight of methyl vinyl ether, 45 parts by weight of aluminum chloride and 25 parts by weight of polyoxyethylene linoleate After mixing and raising the temperature at 100° C., the mixture was reacted for 6 hours to prepare a polyurea solution A, 55 parts by weight of phenylhydrazine, 45 parts by weight of cetyl alcohol ethylene propylene copolymer, 35 parts by weight of cyclopentane to 100 parts by weight of iodobenzene And 15 parts by weight of diethyl ether is mixed to prepare a curing agent solution B, and then the solution A and solution B are mixed in a volume ratio of 5:5.

To 100 parts by weight of isocyanurate, 90 parts by weight of shodium lactate methylsilanol, 80 parts by weight of 1,5-naphthalene diisocyanate, 70 parts by weight of methyl vinyl ether, 60 parts by weight of aluminum chloride and 40 parts by weight of polyoxyethylene linoleate After mixing and heating at a temperature of 120° C., the mixture was reacted for 7 hours to prepare a polyurea solution A, and 100 parts by weight of iodobenzene, 40 parts by weight of phenylhydrazine, 30 parts by weight of cetyl alcohol ethylene propylene copolymer, 20 parts by weight of cyclopentane And 5 parts by weight of diethyl ether is mixed to prepare a curing agent solution B, and then the solution A and solution B are mixed in a volume ratio of 5:5.

On the other hand, in order to evaluate the performance of the crack repair agent using polyurea of each of the above examples, according to KSF 4922, KSD 9502 and KSF 4936, the test pieces were prepared as described above, and then the physical properties were compared with the prototypes A and B. was measured, and the results are shown in Table 1 below.

Therefore, as shown in Table 1 above, the crack repair agent using polyurea according to a preferred embodiment of the present invention is given strength and toughness in the molecular structure and can be used for various purposes such as waterproofing, anticorrosion, flooring, and the like. If the curing agent is applied with spray equipment, the crack resistance is superior to that of the existing crack repair agent, so that the deterioration of the physical properties can be prevented.

On the other hand, the coating (or repair), waterproofing and anticorrosion method using a crack repair agent using polyurea according to a preferred embodiment of the present invention is as follows.

First, the surface of the concrete for construction of the crack repair agent using the polyurea composition as described above is cleaned and treated by the worker.

Here, the cleaning of the concrete surface includes removing dust, contaminants, or oil adhering to the concrete surface and smoothing the protrusion of the surface to be constructed.

Thereafter, a crack repair agent using polyurea according to a preferred embodiment of the present invention is prepared.

After that, the crack repair agent using the polyurea is applied or sprayed to a predetermined thickness on the surface-treated construction surface by an application or spraying means, and then dried and the coating, waterproofing and anticorrosion method is completed through the formation of a coating film of a predetermined thickness. .

Therefore, according to the present invention, strength and toughness are imparted to the molecular structure, and it can be used for various purposes such as waterproofing, anti-corrosion, and flooring. Also, when the main agent and hardener are sprayed with a spray device, crack resistance is better than that of conventional crack repair agents. Excellent coating, waterproofing and anticorrosive method can be provided by preventing deterioration of physical properties.

Although preferred embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains may substitute variously within the scope without departing from the technical spirit or essential features of the present invention. and variations are possible, so it will be understood that the embodiments may be implemented in other specific forms. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (5)

a polyurea solution A prepared by mixing isocyanurate with shodium lactate methylsilanol, 1,5-naphthalene diisocyanate, methyl vinyl ether, aluminum chloride and polyoxyethylene linoleate;
A crack repair agent using polyurea, characterized in that it contains a curing agent B solution prepared by mixing iodobenzene with phenylhydrazine, cetyl alcohol ethylene propylene copolymer, cyclopentane and diethyl ether. According to claim 1, Liquid A,
70-80 parts by weight of shodium lactate methylsilanol, 60-70 parts by weight of 1,5-naphthalene diisocyanate, 50-60 parts by weight of methyl vinyl ether, 40-50 parts by weight of aluminum chloride and A crack repair agent using polyurea, characterized in that it is prepared by mixing 20-30 parts by weight of polyoxyethylene linoleate, raising the temperature at a temperature of 80°C-120°C, and reacting for 5-7 hours. According to claim 2, Liquid B,
It is characterized in that 50-60 parts by weight of phenylhydrazine, 40-50 parts by weight of cetyl alcohol ethylene propylene copolymer, 30-40 parts by weight of cyclopentane and 10-20 parts by weight of diethyl ether are mixed in 100 parts by weight of iodobenzene. Crack repair agent using polyurea. According to claim 3, A solution and B solution,
A crack repair agent using polyurea, characterized in that it is prepared by mixing in a volume ratio of 5:5 to 7:3. pretreatment of the construction surface;
5. A method comprising: preparing a crack repair agent using the polyurea according to any one of claims 1 to 4;
A coating, waterproofing and anticorrosive construction method using a crack repair agent using polyurea, comprising the step of applying or spraying a cracking agent using polyurea to a predetermined thickness on the construction surface by an application or spraying means.