KR102322582B1 - Polyurethane waterproof agent manufacturing method and waterproof method using thereof - Google Patents

Abstract

According to the present invention, provided is a polyurethane waterproofing material manufacturing method comprising: a step of producing liquid A by mixing 70 to 90 parts by weight of cyclohexane, 60 to 80 parts by weight of isopropylbenzene, 50 to 70 parts by weight of n-butyl bromide, 40 to 60 parts by weight of cis-1,2-dichloroethylene, and 30 to 50 parts by weight of trans-1,2-dichloroethylene in 100 parts by weight of a mixture of phenyl isocyanate and m-phenylene diisocyanate in a 1:1 ratio; a step of producing liquid B by mixing 70 to 90 parts by weight of 1,5-naphthalenediol, 60 to 80 parts by weight of 2,3-naphthalenediol, 50 to 70 parts by weight of 1,4-dihydroxydiethylbenzene, 40 to 60 parts by weight of 1,6-hexanediol, 30 to 50 parts by weight of ethanolamine, 20 to 40 parts by weight of calcium carbonate, 5 to 7 parts by weight of pigment, and 3 to 5 parts by weight of antifoaming agent in 100 parts by weight of polyethylene adipate; and a step of mixing the liquid A and the liquid B in a volume ratio of 1: 1. Accordingly, a polyurethane waterproofing material can continuously maintain strong resistance to cracks in concrete structures.

Description

Polyurethane waterproofing agent manufacturing method and construction method using the same {Polyurethane waterproof agent manufacturing method and waterproof method using thereof}

The present invention relates to a method for manufacturing a polyurethane coating waterproofing material and a construction method using the same, and more particularly, to a method for manufacturing a polyurethane coating waterproofing material excellent in tensile strength, elongation, tear strength, workability and durability, and a construction method using the same it's about

Polyurethane materials for civil engineering and construction are capable of seamless construction, which is a characteristic of the material itself, and the construction properties that adapt well to complex structures, and chemical properties such as adhesion to the substrate, chemical resistance, durability, and sound absorption. It has excellent physical properties such as , dimensional stability and, in particular, excellent elongation rate, so it has excellent followability to cracks in the base, so its demand as a waterproofing material for interior and exterior walls and floors of buildings is increasing. However, at present, polyurethane materials having such excellent properties for construction are produced by dividing isocyanate prepolymers and polyol mixtures in production plants, and they must be constructed through several stages of measurement, mixing, stirring, and construction according to the mixing ratio set at the construction site. As it is easy to cause defects in construction and requires skilled professional manpower, it causes an increase in labor costs.

In general, two-component polyurethane materials must use all of the agitated waterproofing material within a limited pot life, so the time interval between stirring and construction must be well controlled. Therefore, in order to maintain the excellent physical and chemical properties of these polyurethane materials and to compensate for the shortcomings of the two-component type, one-component formulations of polyurethane building materials are being studied. A method of synthesizing and adding a filler, a stabilizer, and a colorant to the polyurethane material is used.

However, this method has disadvantages in that curing time is slow at room temperature, storage stability is reduced even when only a little moisture is present, and swelling defects of the coating film are easy to occur due to carbon dioxide generated by the reaction of moisture and isocyanate.

In order to compensate for these disadvantages, Japanese Patent Publication No. 5-75035 discloses a method for improving storage stability and curing speed using morpholinodiethyl ether as a catalyst.

However, this method did not solve the problem of the swelling of the coating film caused by carbon dioxide.

Therefore, in order to solve this problem, US Patent No. 4720535 or Japanese Patent Application Laid-Open No. 4-226522 discloses a method using a latent curing agent, Schiff Base. That is, it is a method of reacting aldehyde with primary di or triamine to make polyaldimine, mixing it with isocyanate prepolymer and using it as a one-component material.

However, when such polyaldimine is mixed with isocyanate and used as a one-component urethane material, the reactivity is high in a high temperature and high humidity environment, so there is a problem inappropriate for waterproofing the roof of a building in summer. That is, hardening of the surface and the lower part of the coating film proceeds easily, but the inside of the coating film is difficult to penetrate moisture from the cured surface of the coating film, so the curing progress is slow, and swelling defects due to aldehydes dissociated during curing occur frequently.

As another method of using a latent curing agent, British Patent No. 1575666 discloses a method of reacting a secondary amine with a ketone or an aldehyde to form a polyenamine, and mixing it with an isocyanate prepolymer to form a one-component type. However, in this case, the isocyanate of the prepolymer must be masked or an isocyanate having a very low reactivity must be used, and it is difficult to use it as a building material due to low storage stability.

In addition, Korean Patent Publication No. 1997-0065579 states that the curing rate is controlled by allowing aldimine and ketimine to exist at the same time, so that the defect rate is low, and construction is possible even under adverse environmental conditions such as high temperature and high humidity in summer. contains problems.

In addition, Korean Patent No. 10-0884015 discloses an exposed composite waterproof structure composed of an adhesive layer, a breathable barrier layer, an embossed polyviny chloride sheet layer, a urethane waterproof layer, and a top coat layer, but before construction of a polyurethane coating waterproofing material When the sheet layer is formed, the solvent contained in the polyurethane is gradually absorbed into the polyvinyl chloride sheet layer and the sheet shrinks. This causes water leakage, and in this case, there is a problem in that the entire construction has to be removed.

Therefore, an object of the present invention is to add cyclohexane, isopropylbenzene, n-butyl bromide, cis-1,2-dichloroethylene and trans-1,2- to a composite obtained by mixing phenyl isocyanate and m-phenylenediisocyanate in a predetermined volume ratio. After preparing solution A by mixing dichloroethylene, 1,5-naphthalenediol, 2,3-naphthalenediol, 1,4-dihydroxydiethylbenzene, 1,6-hexanediol, ethanolamine, After preparing solution B by mixing calcium carbonate, pigment and antifoaming agent, solution A and solution B are mixed in a predetermined volume ratio to prepare a polyurethane coating waterproofing material, polyurethane excellent in tensile strength, elongation, tear strength and workability It is to provide a method for manufacturing a coating film waterproofing material and a construction method using the same.

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, 70 to 90 parts by weight of cyclohexane, 60 to 80 parts by weight of isopropylbenzene, 50 parts by weight of n-butyl bromide to 100 parts by weight of a mixture of phenyl isocyanate and m-phenylene diisocyanate in a 1:1 ratio -70 parts by weight, 40-60 parts by weight of cis-1,2-dichloroethylene and 30-50 parts by weight of trans-1,2-dichloroethylene to prepare a solution A; 1,5-naphthalenediol 70-90 parts by weight, 2,3-naphthalenediol 60-80 parts by weight, 1,4-dihydroxydiethylbenzene 50-70 parts by weight, 1,6 to 100 parts by weight of polyethylene adipate - 40 to 60 parts by weight of hexanediol, 30 to 50 parts by weight of ethanolamine, 20 to 40 parts by weight of calcium carbonate, 5 to 7 parts by weight of a pigment and 3 to 5 parts by weight of an antifoaming agent to prepare a liquid B; There is provided a polyurethane coating waterproofing material manufacturing method comprising the step of mixing solution A and solution B in a volume ratio of 1:1.

In addition, according to the present invention, the concrete surface is cleaned and the step of applying a primer; manufacturing the polyurethane coating film waterproofing material; a step of applying or spraying a polyurethane coating waterproofing material on the concrete surface to perform waterproofing of the coating film; There is provided a construction method using a polyurethane coating waterproofing material comprising the step of finishing the top coat on the coating waterproofing layer by the polyurethane coating waterproofing material.

Therefore, according to the present invention, it has excellent durability, chemical resistance, adhesiveness, aging resistance, ozone resistance, weather resistance and heat resistance, and has excellent workability during construction because the curing time is fast and bubbles are not generated, and the existing one-component type The problem that occurs in polyurethane coating waterproofing materials, that is, hardening of the surface and the bottom of the coating film proceeds easily, but the inside of the coating film is difficult to penetrate moisture from the cured surface of the coating film, so the curing progress is slow, and swelling due to aldehyde dissociating during curing occurs frequently. This phenomenon can be prevented in advance.

In addition, the above-described polyurethane coating waterproofing material can continuously maintain strong resistance to cracks in concrete structures, and since a highly durable waterproofing layer that does not generate bubbles is formed, it is very usefully used as a coating waterproofing material for roofs of building structures and civil engineering structures. 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.

Polyurethane coating film waterproofing material according to a preferred embodiment of the present invention, cyclohexane, isopropylbenzene, n-butyl bromide, cis-1,2-dichloroethylene and trans- 1,5-naphthalenediol, 2,3-naphthalenediol, 1,4-dihydroxydiethylbenzene, 1,6-hexanediol in solution A prepared by mixing 1,2-dichloroethylene and polyethylene adipate , ethanolamine, calcium carbonate, pigment, and a liquid B prepared by mixing the antifoaming agent, and the liquid A and the liquid B are mixed in a predetermined volume ratio.

Specifically, the polyurethane coating waterproofing material of the present invention is 70 to 90 parts by weight of cyclohexane, 60 to 80 parts by weight of isopropylbenzene, Liquid A prepared by mixing 50 to 70 parts by weight of n-butylbromide, 40 to 60 parts by weight of cis-1,2-dichloroethylene and 30 to 50 parts by weight of trans-1,2-dichloroethylene, and 100 parts by weight of polyethylene adipate 1,5-naphthalenediol 70-90 parts by weight, 2,3-naphthalenediol 60-80 parts by weight, 1,4-dihydroxydiethylbenzene 50-70 parts by weight, 1,6-hexanediol 40- 60 parts by weight, 30 to 50 parts by weight of ethanolamine, 20 to 40 parts by weight of calcium carbonate, 5 to 7 parts by weight of pigment, and 3 to 5 parts by weight of an antifoaming agent. It is mixed in a volume ratio of :1.

On the other hand, the method of manufacturing a polyurethane coating waterproofing material according to a preferred embodiment of the present invention is 70 to 90 parts by weight of cyclohexane, isopropylbenzene in 100 parts by weight of a composite in which phenyl isocyanate and m-phenylene diisocyanate are mixed in a 1:1 ratio. 60 to 80 parts by weight, 50 to 70 parts by weight of n-butyl bromide, 40 to 60 parts by weight of cis-1,2-dichloroethylene and 30 to 50 parts by weight of trans-1,2-dichloroethylene to prepare solution A step, 70-90 parts by weight of 1,5-naphthalenediol, 60-80 parts by weight of 2,3-naphthalenediol, 50-70 parts by weight of 1,4-dihydroxydiethylbenzene, 40 to 60 parts by weight of 1,6-hexanediol, 30 to 50 parts by weight of ethanolamine, 20 to 40 parts by weight of calcium carbonate, 5 to 7 parts by weight of a pigment and 3 to 5 parts by weight of an antifoaming agent are mixed to prepare solution B; , and the like in which the liquid A and the liquid B are mixed in a volume ratio of 1:1.

That is, according to the present invention, cyclohexane, isopropylbenzene, n-butyl bromide, cis-1,2-dichloroethylene and trans-1,2-dichloroethylene are added to a composite mixture of phenyl isocyanate and m-phenylene diisocyanate. Liquid A, which was mixed and reacted, was mixed with polyethylene adipate, 1,5-naphthalenediol, 2,3-naphthalenediol, 1,4-dihydroxydiethylbenzene, 1,6-hexanediol, ethanolamine, calcium carbonate, A urethane bond is formed when mixed with solution B, which is reacted by mixing a pigment and an antifoaming agent.,

Thus, the liquid A is, phenyl isocyanate and m- phenylene diisocyanate 1:1 mixed 100 parts by weight of the compound 100 parts by weight cyclohexane 70 to 90 parts by weight, isopropylbenzene 60 to 80 parts by weight, n- butyl bromide 50 to 70 parts by weight, 40-60 parts by weight of cis-1,2-dichloroethylene, and 30-50 parts by weight of trans-1,2-dichloroethylene are preferably prepared through the reaction.

The composite obtained by mixing phenyl isocyanate and m-phenylenediisocyanate provides adsorption and adhesion functions, and provides a function of speeding up the reaction rate of the compositions to convert the compositions into urethane within a short time and terminating the reaction.

On the other hand, in the composite, phenyl isocyanate and m-phenylene diisocyanate are mixed in a volume ratio of 1:1.

Phenyl isocyanate is a material that determines the reaction time and provides an adsorption function, and when it exceeds 1 volume ratio, the reaction rate of the compositions becomes too fast, so that stirrability and workability are reduced, and when it is less than 1 volume ratio, the above There is a problem in that the reaction rate of the compositions is too slow to increase the working time.

m-phenylenediisocyanate is a material that reacts with the compositions to form a urethane bond, and when it exceeds 1 volume ratio, the viscosity becomes too large, so stirring with the compositions is inconvenient, and less than 1 volume ratio In this case, there is a problem in that the storage stability of the composite is low, and the adhesive strength of the coating film is lowered.

Accordingly, it is preferable that the composite is provided with effects such as improved durability, agitation, stability, workability and workability through having a limited volume ratio as described above.

Liquid A according to the present invention, 70 to 90 parts by weight of cyclohexane, 60 to 80 parts by weight of isopropylbenzene, 50 to 70 parts by weight of n-butyl bromide, respectively, based on 100 parts by weight of the composite to 100 parts by weight of the composite as described above. , cis-1,2-dichloroethylene 40-60 parts by weight and trans-1,2-dichloroethylene 30-50 parts by weight are added and reacted.

Cyclohexane is a material that provides a function to allow the liquid mixture of A and B to be smoothly sprayed or applied by a spraying device or an applicator when waterproofing the coating film. Based on 100 parts by weight of the composite, more than 90 parts by weight In the case where the adhesive strength is lowered, the adhesive strength is lowered, and when it is less than 70 parts by weight, the adhesive strength is increased and spraying or coating workability is lowered, so it is good to have the limited parts by weight as described above.

Isopropylbenzene is a diluent for providing a predetermined viscosity by reacting with the complex, and when it exceeds 80 parts by weight based on 100 parts by weight of the complex, the overall viscosity of the solution A becomes too small, and the workability is greatly reduced If it is less than 60 parts by weight, the overall viscosity of the solution A becomes too large and the stirring efficiency with the solution B is lowered, so it is good to have the limited parts by weight as described above.

n-Butyl bromide is a material that reacts with the composite, etc. to provide adsorption and adhesion functions, terminates the reaction of the compositions, and improves crack resistance. Based on 100 parts by weight of the composite, when it exceeds 70 parts by weight, the composition Since the reaction rate of these is too fast, the stirrability and workability are reduced, and when it is less than 50 parts by weight, the reaction rate of the compositions becomes too slow and the working time increases, so it is good to have the limited parts by weight as described above.

cis-1,2-dichloroethylene is a material that improves durability by providing physical properties such as heat resistance, toughness, flame resistance, and chemical resistance. Based on 100 parts by weight of the composite, when it exceeds 60 parts by weight, the elasticity is It is lowered and the coating layer is easily damaged upon external impact, and when it is less than 40 parts by weight, the strength and rigidity function is reduced and durability is also reduced, so it is preferable to have the limited parts by weight as described above.

trans-1,2-dichloroethylene is a substance that reacts with the composite and provides adhesion with the concrete surface. When it exceeds 50 parts by weight based on 100 parts by weight of the composite, the overall adhesive strength of solution A becomes strong, but workability This decreases, and if it is less than 30 parts by weight, it is easily peeled off the concrete surface, so it is good to have the limited parts by weight as described above.

Accordingly, in the solution A, the cyclohexane, isopropylbenzene, n-butyl bromide, cis-1,2-dichloroethylene and trans-1,2-dichloroethylene have a limited weight part as described above based on the complex. Through this, it is preferable to provide an improved coating degree and stability of the waterproofing film.

Therefore, in the liquid A of the present invention, when the weight part of the composition has a weight part less than the above range with respect to the weight part of the composition of the liquid B to be added, the overall adhesive strength of the coating film waterproofing material is lowered and within the above range. In the case of having a weight portion exceeding

Meanwhile, polyethylene adipate is mixed with 1,5-naphthalenediol, 2,3-naphthalenediol, 1,4-dihydroxydiethylbenzene, 1,6-hexanediol, ethanolamine, calcium carbonate, pigment and antifoaming agent. The reacted solution B is a resin composition with excellent properties such as heat resistance, moisture resistance, mechanical properties and processability, as well as having improved impact resistance by reacting with them when mixed with solution A as described above.

Accordingly, the liquid B contains 70 to 90 parts by weight of 1,5-naphthalenediol, 60 to 80 parts by weight of 2,3-naphthalenediol, 50 to 50 parts by weight of 1,4-dihydroxydiethylbenzene to 100 parts by weight of polyethylene adipate. 70 parts by weight, 40 to 60 parts by weight of 1,6-hexanediol, 30 to 50 parts by weight of ethanolamine, 20 to 40 parts by weight of calcium carbonate, 5 to 7 parts by weight of a pigment and 3 to 5 parts by weight of an antifoaming agent are added. desirable.

Polyethylene adipate is a material that provides the function of a plasticizer, and provides predetermined durability through curing of solution A.

1,5-naphthalenediol is a material that provides a function of controlling the pot life (curing for spraying) time. Based on 100 parts by weight of polyethylene adipate, when it exceeds 90 parts by weight, the curing time is too fast for spraying and application The operation becomes impossible, and if the amount is less than 70 parts by weight, the curing time is too slow and the total working time is increased, so it is preferable to have the limited parts by weight as described above.

2,3-naphthalenediol is a substance that controls pot life together with 1,5-naphthalenediol. When it exceeds 80 parts by weight based on 100 parts by weight of polyethylene adipate, the viscosity of the curing agent is too high, so spraying and applying The operation becomes impossible, and if the amount is less than 60 parts by weight, the curing time is too slow and the total working time is increased, so it is preferable to have the limited parts by weight as described above.

1,4-dihydroxydiethylbenzene is a substance that prevents carbonization during spraying and application of the A and B solutions, and when it exceeds 70 parts by weight based on 100 parts by weight of polyethylene adipate, the anti-carbonization property is Although improved, flatness is also increased to reduce workability on inclined surfaces, etc., and when less than 60 parts by weight, carbonization prevention property is lowered and easily deteriorated, so it is preferable to have a limited part by weight as described above.

1,6-hexanediol is a diluent for reacting with the above compositions to provide flexibility and a predetermined viscosity. Based on 100 parts by weight of polyethylene adipate, when it exceeds 60 parts by weight, the overall flexibility of Solution B is too high. High and the viscosity becomes too low, and when it is less than 40 parts by weight, the overall flexibility of the liquid B is too low and the viscosity is too high, so that the stirrability and workability are reduced, it is good to have the limited parts by weight as described above.

Ethanolamine is a material that provides waterproofness by increasing adhesion during coating layer construction and preventing layer separation during storage of solution B. Based on 100 parts by weight of polyethylene adipate, when it exceeds 50 parts by weight, binding strength with solution A As this increases, the viscosity increases and workability decreases, and when the amount is less than 30 parts by weight, a layer separation phenomenon occurs during storage of the B solution, and the stirrability is reduced when mixed with the A solution, so it has a limited weight part as described above. it's good

Calcium carbonate is a material that provides a light-shielding function during the construction of the coating layer, and when it exceeds 40 parts by weight based on 100 parts by weight of polyethylene adipate, the adhesiveness and lightness of the waterproof layer decrease, and when it is less than 20 parts by weight Since the light-shielding property is reduced, it is preferable to have a limited weight part as described above.

The pigment is a material that provides a coloring function of the coating layer, and when it exceeds 7 parts by weight based on 100 parts by weight of polyethylene adipate, sedimentation of the pigment particles occurs before gelation, resulting in reduced stability, and less than 5 parts by weight In this case, since the coloring function is lowered after being applied to the adherend, it is preferable to have a limited weight portion as described above.

The antifoaming agent is a material that suppresses bubbles generated when the compositions are mixed to improve the stirrability. Based on 100 parts by weight of polyethylene adipate, when it exceeds 5 parts by weight, the reactivity of the compositions is greatly suppressed, and the reactivity of the compositions is significantly suppressed by 3 weight When it is less than part, since the suppression function of foam is lowered and the stirrability is lowered, it is good to have a limited part by weight as described above.

Therefore, in the liquid B of the present invention, when the weight parts of the compositions are less than the above ranges based on the weight parts of polyethylene adipate, the impact resistance and adhesive strength are lowered and have parts by weight exceeding the above ranges. In this case, since the viscosity is high, the stirring efficiency is lowered, and the adhesive force is lowered by hardening rather than the concrete surface, and thus the waterproofing and oxidizing functions are lowered by separating from the concrete surface, it is preferable to have the same weight parts as described above.

On the other hand, in the present invention, the liquid A and the liquid B are mixed in a volume ratio of 1:1, respectively. Limiting the volume ratio to 1:1 is that when the volume ratio for mixing does not have the above ratio, stirrability is Since there is a problem in that this is greatly reduced, and adhesive strength, oxidation function, flatness, etc. are lowered, it is preferable to mix in the same volume ratio as described above.

Hereinafter, the effect of the polyurethane coating waterproofing material according to a preferred embodiment of the present invention will be described through specific examples.

60 parts by weight of cyclohexane, 50 parts by weight of isopropylbenzene, 40 parts by weight of n-butyl bromide, cis-1,2-dichloro to 100 parts by weight of a mixture of phenyl isocyanate and m-phenylene diisocyanate in a volume ratio of 2:1 A solution was prepared by mixing 30 parts by weight of ethylene and 20 parts by weight of trans-1,2-dichloroethylene, and 100 parts by weight of 1,5-naphthalenediol and 90 parts by weight of 2,3-naphthalenediol to 100 parts by weight of polyethylene adipate. , 80 parts by weight of 1,4-dihydroxydiethylbenzene, 70 parts by weight of 1,6-hexanediol, 60 parts by weight of ethanolamine, 50 parts by weight of calcium carbonate, 10 parts by weight of a pigment and 8 parts by weight of an antifoaming agent are mixed to give solution B. After preparing the polyurethane coating waterproofing material by mixing the solution A and the solution B in a volume ratio of 1:2.

90 parts by weight of cyclohexane, 80 parts by weight of isopropylbenzene, 70 parts by weight of n-butyl bromide, cis-1,2-dichloro to 100 parts by weight of a mixture of phenyl isocyanate and m-phenylene diisocyanate in a volume ratio of 1:2 A solution was prepared by mixing 60 parts by weight of ethylene and 50 parts by weight of trans-1,2-dichloroethylene, and 70 parts by weight of 1,5-naphthalenediol and 60 parts by weight of 2,3-naphthalenediol to 100 parts by weight of polyethylene adipate. , 50 parts by weight of 1,4-dihydroxydiethylbenzene, 40 parts by weight of 1,6-hexanediol, 30 parts by weight of ethanolamine, 20 parts by weight of calcium carbonate, 5 parts by weight of a pigment and 3 parts by weight of an antifoaming agent are mixed to give solution B. After preparing the polyurethane coating film waterproofing material by mixing solution A and solution B in a volume ratio of 1:1.

100 parts by weight of a mixture of phenyl isocyanate and m-phenylene diisocyanate 1:1 mixed 100 parts by weight of cyclohexane, 90 parts by weight of isopropylbenzene, 80 parts by weight of n-butyl bromide, 70 parts by weight of cis-1,2-dichloroethylene A solution A was prepared by mixing parts by weight and 60 parts by weight of trans-1,2-dichloroethylene, 1,5-naphthalenediol 60 parts by weight, 2,3-naphthalenediol 50 parts by weight, 1 to 100 parts by weight of polyethylene adipate 40 parts by weight of ,4-dihydroxydiethylbenzene, 30 parts by weight of 1,6-hexanediol, 20 parts by weight of ethanolamine, 10 parts by weight of calcium carbonate, 3 parts by weight of pigment and 1 part by weight of antifoaming agent were mixed to prepare solution B After that, solution A and solution B are mixed in a volume ratio of 2:1 to prepare a polyurethane coating waterproofing material.

As a reference example or evaluation example of the polyurethane coating waterproofing material manufactured according to Examples 1 to 3, a polyurethane coating waterproofing material product distributed in the market after being manufactured as a test piece according to KSF3211 (according to Korean Patent Registration No. 10-1771248) The physical properties were measured compared to the manufactured product), and the results are shown in Table 1 below.

Therefore, as shown in Table 1 above, the polyurethane coating waterproofing material according to a preferred embodiment of the present invention is very excellent in all areas, such as tensile strength, elongation, tear strength, and tensile performance after aging treatment, compared to conventional products. It can be seen that it has physical properties.

On the other hand, the construction method using the polyurethane coating waterproofing material according to a preferred embodiment of the present invention is as follows.

First, a primer is applied after the concrete surface is cleaned and treated by an operator for the polyurethane coating waterproofing material to be constructed as described above.

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.

Then, 70 to 90 parts by weight of cyclohexane, 60 to 80 parts by weight of isopropylbenzene, 50 to 70 parts by weight of n-butylbromide, cis 40-60 parts by weight of -1,2-dichloroethylene and 30-50 parts by weight of trans-1,2-dichloroethylene are mixed to prepare a solution A, and 70-90 parts by weight of 1,5-naphthalenediol in 100 parts by weight of polyethylene adipate parts by weight, 2,3-naphthalenediol 60 to 80 parts by weight, 1,4-dihydroxydiethylbenzene 50 to 70 parts by weight, 1,6-hexanediol 40 to 60 parts by weight, ethanolamine 30 to 50 parts by weight , 20 to 40 parts by weight of calcium carbonate, 5 to 7 parts by weight of pigment, and 3 to 5 parts by weight of an antifoaming agent to prepare solution B manufactured.

Thereafter, the polyurethane coating waterproofing material prepared as described above is applied or sprayed on the surface of the concrete to perform waterproofing of the coating film.

After that, a top coat is finished on the waterproof coating layer by the polyurethane coating waterproofing material.

Therefore, according to a preferred embodiment of the present invention, the manufacturing method of the polyurethane coating waterproofing material and the waterproofing construction method using the same are excellent in tensile strength, low temperature flexibility, impact resistance, adhesiveness, chemical resistance when applied through spraying, etc. to building civil structures, etc. and abrasion resistance, even when applied at a thickness of about 2 mm at a time, the curing time is fast and the surface cracking phenomenon and bubbles of the coating film do not occur.

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 (2)

100 parts by weight of a mixture of phenyl isocyanate and m-phenylene diisocyanate 1:1 mixed 70-90 parts by weight of cyclohexane, 60-80 parts by weight of isopropylbenzene, 50-70 parts by weight of n-butylbromide, cis-1 40 to 60 parts by weight of 2-dichloroethylene and 30 to 50 parts by weight of trans-1,2-dichloroethylene to prepare a solution A;
1,5-naphthalenediol 70-90 parts by weight, 2,3-naphthalenediol 60-80 parts by weight, 1,4-dihydroxydiethylbenzene 50-70 parts by weight, 1,6 to 100 parts by weight of polyethylene adipate - 40 to 60 parts by weight of hexanediol, 30 to 50 parts by weight of ethanolamine, 20 to 40 parts by weight of calcium carbonate, 5 to 7 parts by weight of a pigment and 3 to 5 parts by weight of an antifoaming agent to prepare a liquid B;
A polyurethane coating waterproofing material manufacturing method comprising the step of mixing solution A and solution B in a volume ratio of 1:1. a step of cleaning the concrete surface and applying a primer;
The step of manufacturing a polyurethane coating waterproofing material according to claim 1;
a step of applying or spraying a polyurethane coating waterproofing material on the concrete surface to perform waterproofing of the coating film;
A construction method using a polyurethane coating waterproofing material, comprising the step of finishing the top coat on the coating film waterproofing layer by the polyurethane coating waterproofing material.