CN114015335A

CN114015335A - Environment-friendly waterproof coating and preparation method thereof

Info

Publication number: CN114015335A
Application number: CN202111321861.6A
Authority: CN
Inventors: 国庆荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-02-08

Abstract

The invention discloses an environment-friendly waterproof coating which is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is (5-8) to (1-3); the component A comprises the following components in parts by weight: 80-90 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 25-35 parts of an inorganic filler, 0.1-0.3 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 1-3 parts of a defoaming agent and 1-3 parts of a dispersing agent; the component B comprises the following components in parts by weight: 10-20 parts of waterproof functional copolymer and 2-4 parts of cement. The invention also discloses a preparation method of the environment-friendly waterproof coating. The environment-friendly waterproof coating disclosed by the invention has the advantages of obvious waterproof effect, good environmental protection performance, aging resistance, comprehensive performance and performance stability and good bonding performance.

Description

Environment-friendly waterproof coating and preparation method thereof

Technical Field

The invention relates to the technical field of waterproof coatings, in particular to an environment-friendly waterproof coating and a preparation method thereof.

Background

In recent years, with the continuous progress of economic construction in China, the construction industry in China is also rapidly developed, and the waterproof treatment in the construction process of construction, decoration and the like is more and more important. The use of the waterproof coating is a common waterproof treatment method, and the waterproof treatment effect of the method is closely related to the performance of the waterproof coating. The development of waterproof coatings with excellent comprehensive performance is very important.

The waterproof paint is a liquid or semi-liquid substance, and is formed into a continuous film with certain elasticity and thickness by adopting construction technologies such as brushing or spraying on the surface of a building through chemical reaction, so that a certain water pressure can be resisted, and the aims of water resistance and moisture resistance are fulfilled. The waterproof coating is a special coating, and has the particularity that a soft, waterproof and anti-cracking waterproof structure layer can be formed on the surface of the coating to prevent water molecules from permeating from the outside to a base layer. The traditional waterproof coating is easy to cause the phenomena of aging, drying crack, deformation, fracture, delamination and the like in the using process, and the water resistance and the weather resistance of the formed paint film are required to be further improved, so that the service life is short. The existing waterproof coating has the problems of easy cracking of internal corners, sagging in outdoor construction, no dryness in high-humidity environment, low strength and the like. In addition, the waterproof coating on the market has the defects of short storage period, high cost, performance stability, environmental protection and further improvement of comprehensive performance.

For example, a Chinese patent with the application number of 201010243758.X discloses an environment-friendly waterproof coating and a preparation method thereof, wherein the coating is composed of 31-34 parts by weight of asphalt, 8-15 parts by weight of SBS thermoplastic rubber, 6-10 parts by weight of bentonite, 33-40 parts by weight of water, 3-5 parts by weight of an emulsifier and 0.3-0.7 part by weight of polyacrylate. The waterproof film can effectively resist base layer cracks and prevent the waterproof film from breaking, can be firmly adhered to base surfaces of different materials, and can effectively prevent moisture from flowing under the film. The waterproof film of the waterproof coating after curing has no phenomena of bubbling, sliding, flowing and dripping after being heated for 6 hours at 88 ℃. The polyacrylate replaces melamine used in the existing market to be used as the mixture of the acid-base regulator, so that the waterproofness and the elasticity of the waterproof coating can be effectively improved, and the anti-aging performance of the coating is improved. However, the product contains asphalt, which has irritation to skin mucosa, phototoxic effect and carcinogenic effect during preparation and use, resulting in poor environmental protection performance, and the coating takes water as solvent, which has poor dispersion effect, poor storage and transportation stability, and unsatisfactory comprehensive performance after curing.

Therefore, a more effective method is needed to prepare the environment-friendly waterproof coating with remarkable waterproof effect, good environmental protection performance, aging resistance, comprehensive performance and performance stability and good bonding performance.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an environment-friendly waterproof coating which is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is (5-8) to (1-3); the component A comprises the following components in parts by weight: 80-90 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 25-35 parts of an inorganic filler, 0.1-0.3 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 1-3 parts of a defoaming agent and 1-3 parts of a dispersing agent; the component B comprises the following components in parts by weight: 10-20 parts of waterproof functional copolymer and 2-4 parts of cement.

Preferably, the terminal sulfonate type hyperbranched aqueous polyurethane emulsion is prepared by the method of example 1 of the Chinese patent application No. 201210529993.2 (which is incorporated by reference herein as part of the present invention).

Preferably, the inorganic filler is at least one of calcium carbonate, calcium carbonate and calcium carbonate.

Preferably, the antifoaming agent is one or more of tributyl phosphate, antifoaming agent dele 3100 and antifoaming agent BYK 088.

Preferably, the dispersant is sodium hexametaphosphate and/or sodium polycarboxylate.

Preferably, the preparation method of the waterproof functional copolymer comprises the following steps: adding allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate, N-trihydroxymethyl acrylamide and an initiator into a high boiling point solvent, stirring and reacting for 3-6 hours at 65-75 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 3-6 times by using ethanol, and finally drying in a vacuum drying oven at 85-95 ℃ to constant weight to obtain the waterproof functional copolymer.

Preferably, the mass ratio of the allyl pentafluorobenzene, the allyl succinimidyl carbonate, the methyl 2-fluoroacrylate, the allyl triphenyl phosphonium bromide, the 3, 4-epoxy cyclohexyl methyl methacrylate, the N-trihydroxymethyl methacrylamide, the initiator and the high boiling point solvent is 1 (0.2-0.4): 0.8-1.2): 1-2): 0.3-0.6): 2-3): 0.06-0.08): 25-35.

Preferably, the initiator is at least one of azobisisobutyronitrile and azobisisobutyronitrile.

Preferably, the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone.

Preferably, the inert gas is any one of nitrogen, helium, neon and argon.

Preferably, the cement is ordinary portland cement 32.5.

Another object of the present invention is to provide a method for preparing the environment-friendly waterproof coating, which comprises the following steps:

the first step is as follows: uniformly mixing the end sulfonate type hyperbranched waterborne polyurethane emulsion, the inorganic filler, the 2,4, 6-tri (amino caproyl) -1,3, 5-triazine, the defoaming agent and the dispersing agent according to the parts by weight, and stirring for 15-35 minutes at the rotating speed of 1200-1500r/min to prepare a component A;

the second step is that: uniformly mixing the waterproof functional copolymer and the cement according to the parts by weight, and crushing and sieving the mixture by a sieve with 150-plus-200 meshes to prepare a component B;

the third step: when in use, the component B prepared in the second step is added into the component A prepared in the first step according to the mass ratio, and the mixture is stirred for 10 to 20 minutes at the rotating speed of 1000-1300r/min to prepare the environment-friendly waterproof coating.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

(1) the preparation method of the environment-friendly waterproof coating provided by the invention only needs to uniformly mix all the components, does not need special equipment and a production line, has low capital investment and energy consumption, and has high preparation efficiency and finished product qualification rate, and popularization and application values.

(2) The environment-friendly waterproof coating provided by the invention has the advantages that through reasonable selection, mutual matching and combined action of the components and the raw materials, the phenomena of aging, dry cracking, deformation, breakage, delamination and the like easily caused in the using process of the existing waterproof coating can be effectively avoided, and the defect of short service life caused by the fact that the water resistance and weather resistance of the formed paint film are required to be further improved; the defects that the storage period is short, the manufacturing cost is high, and the performance stability, the environmental protection performance and the comprehensive performance are required to be further improved in the waterproof coating on the market are overcome; the prepared waterproof coating has the advantages of obvious waterproof effect, good environmental protection performance, aging resistance, comprehensive performance and performance stability, and good bonding performance.

(3) The environment-friendly waterproof coating provided by the invention comprises a component A and a component B, wherein the component A and the component B are mixed when in use and are prepared for use, so that the transportation and storage stability of the coating is effectively improved; the sulfonate structure can improve the bonding performance between the sulfonate structure and a base material through a bridging effect, and can also improve the interface wettability between components, thereby improving the performance stability and the comprehensive performance. In addition, the polyurethane structure not only has better film-forming property and effectively improves the waterproof effect, but also the sulfonate on the polyurethane structure can perform ion exchange with the phosphine bromide structure in the component B through ion exchange, so that the sulfonate-terminated hyperbranched waterborne polyurethane and the waterproof functional copolymer form a three-dimensional network structure through ionic bonds, and the comprehensive property and the performance stability are effectively improved.

(4) According to the environment-friendly waterproof coating provided by the invention, in the component A, the tri (amino caproyl) -1,3, 5-triazine structure has a structure that carboxyl anions on the tri (amino caproyl) -1,3, 5-triazine structure can chemically react with quaternary phosphonium salt cations on a waterproof functional polymer to be connected with ionic bonds, and secondary amino groups on the tri (amino caproyl) -1,3, 5-triazine structure can perform an epoxy ring-opening reaction with epoxy groups on a molecular chain of the waterproof functional polymer, so that the crosslinking density is further improved, and a coating film formed after curing has better comprehensive performance, better flame retardance and ageing resistance and better mechanical property. Organic solvent and substance with high toxicity are not used in the reaction process, and the ring performance is good.

(5) According to the environment-friendly waterproof coating provided by the invention, the waterproof functional copolymer added in the component B is prepared by copolymerization of allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate and N-trihydroxymethyl acrylamide, and under the multiple actions of an electronic effect, a steric effect and a conjugation effect, the prepared coating has good bonding property, a good dispersion effect, good performance stability, waterproofness and aging resistance; the epoxy group and the phosphine bromide group on the epoxy group and the phosphine bromide group can provide reaction sites for crosslinking and curing; the cement can enhance the bonding property and the strength.

Detailed Description

In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.

The terminal sulfonate type hyperbranched aqueous polyurethane emulsion involved in the embodiment of the invention is the terminal sulfonate type hyperbranched aqueous polyurethane emulsion prepared by the method of the embodiment 1 of the Chinese patent application No. 201210529993.2 (which is incorporated by reference herein as part of the invention).

Example 1

An environment-friendly waterproof coating is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is 5: 1; the component A comprises the following components in parts by weight:

80 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 25 parts of an inorganic filler, 0.1 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 1 part of a defoaming agent and 1 part of a dispersing agent; the component B comprises the following components in parts by weight: 10 parts of waterproof functional copolymer and 2 parts of cement.

The inorganic filler is double flying powder; the defoaming agent is tributyl phosphate; the dispersant is sodium hexametaphosphate.

The preparation method of the waterproof functional copolymer comprises the following steps: adding allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate, N-trihydroxymethyl acrylamide and an initiator into a high boiling point solvent, stirring and reacting for 3 hours at 65 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 3 times by using ethanol, and finally drying in a vacuum drying oven at 85 ℃ to constant weight to obtain the waterproof functional copolymer.

The mass ratio of the allyl pentafluorobenzene to the allyl succinimidyl carbonate to the 2-methyl fluoroacrylate to the allyl triphenyl phosphonium bromide to the 3, 4-epoxy cyclohexyl methyl methacrylate to the N-trihydroxymethyl methacrylamide to the initiator to the high boiling point solvent is 1:0.2:0.8:1:0.3:2:0.06: 25; the initiator is azobisisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; the inert gas is nitrogen.

The cement is ordinary Portland cement 32.5.

The preparation method of the environment-friendly waterproof coating is characterized by comprising the following steps:

the first step is as follows: uniformly mixing the sulfonate-terminated hyperbranched waterborne polyurethane emulsion, the inorganic filler, the 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, the defoaming agent and the dispersing agent in parts by weight, and stirring at the rotating speed of 1200r/min for 15 minutes to prepare a component A;

the second step is that: uniformly mixing the waterproof functional copolymer and the cement in parts by weight, and crushing and sieving with a 150-mesh sieve to prepare a component B;

the third step: when in use, the component B prepared in the second step is added into the component A prepared in the first step according to the mass ratio, and the mixture is stirred for 10 minutes at the rotating speed of 1000r/min, so that the environment-friendly waterproof coating is prepared.

Example 2

An environment-friendly waterproof coating is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is 6: 1.5; the component A comprises the following components in parts by weight: 83 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 27 parts of an inorganic filler, 0.15 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 1.5 parts of a defoaming agent and 1.5 parts of a dispersing agent; the component B comprises the following components in parts by weight: 12 parts of waterproof functional copolymer and 2.5 parts of cement.

The inorganic filler is talcum powder; the antifoaming agent is antifoaming agent delete 3100; the dispersant is a sodium polycarboxylate salt.

The preparation method of the waterproof functional copolymer comprises the following steps: adding allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate, N-trihydroxymethyl acrylamide and an initiator into a high boiling point solvent, stirring and reacting for 4 hours at 68 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 4 times by using ethanol, and finally drying in a vacuum drying oven at 87 ℃ to constant weight to obtain the waterproof functional copolymer.

The mass ratio of the allyl pentafluorobenzene to the allyl succinimidyl carbonate to the 2-methyl fluoroacrylate to the allyl triphenyl phosphonium bromide to the 3, 4-epoxycyclohexyl methyl methacrylate to the N-trihydroxymethyl methacrylamide to the initiator to the high boiling point solvent is 1:0.25:0.9:1.2:0.4:2.3:0.065: 27; the initiator is azobisisobutyronitrile; the high boiling point solvent is N, N-dimethylformamide; the inert gas is helium.

The cement is ordinary Portland cement 32.5.

the first step is as follows: uniformly mixing the sulfonate-terminated hyperbranched waterborne polyurethane emulsion, the inorganic filler, the 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, the defoaming agent and the dispersing agent in parts by weight, and stirring at the rotating speed of 1300r/min for 18 minutes to prepare a component A;

the second step is that: uniformly mixing the waterproof functional copolymer and the cement in parts by weight, and crushing and sieving with a 160-mesh sieve to prepare a component B;

the third step: when in use, the component B prepared in the second step is added into the component A prepared in the first step according to the mass ratio, and the mixture is stirred for 12 minutes at the rotating speed of 1100r/min, so that the environment-friendly waterproof coating is prepared.

Example 3

An environment-friendly waterproof coating is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is 6.5: 2; the component A comprises the following components in parts by weight: 85 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 30 parts of an inorganic filler, 0.2 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 2 parts of a defoaming agent and 2 parts of a dispersing agent; the component B comprises the following components in parts by weight: 15 parts of waterproof functional copolymer and 3 parts of cement.

The inorganic filler is titanium dioxide; the defoaming agent is a defoaming agent BYK 088; the dispersant is sodium hexametaphosphate.

The preparation method of the waterproof functional copolymer comprises the following steps: adding allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate, N-trihydroxymethyl acrylamide and an initiator into a high boiling point solvent, stirring at 70 ℃ for 4.5 hours in an inert gas atmosphere, precipitating in water, washing the precipitated polymer with ethanol for 5 times, and finally drying in a vacuum drying oven at 90 ℃ to constant weight to obtain the waterproof functional copolymer.

The mass ratio of the allyl pentafluorobenzene to the allyl succinimidyl carbonate to the 2-methyl fluoroacrylate to the allyl triphenyl phosphonium bromide to the 3, 4-epoxy cyclohexyl methyl methacrylate to the N-trihydroxymethyl methacrylamide to the initiator to the high boiling point solvent is 1:0.3:1:1.5:0.45:2.5:0.07: 30; the initiator is azobisisobutyronitrile; the high boiling point solvent is N, N-dimethylacetamide; the inert gas is neon.

The cement is ordinary Portland cement 32.5.

the first step is as follows: uniformly mixing the sulfonate-terminated hyperbranched waterborne polyurethane emulsion, the inorganic filler, the 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, the defoaming agent and the dispersing agent in parts by weight, and stirring at the rotating speed of 1350r/min for 25 minutes to prepare a component A;

the second step is that: uniformly mixing the waterproof functional copolymer and the cement in parts by weight, and crushing and sieving with a 180-mesh sieve to prepare a component B;

the third step: when in use, the component B prepared in the second step is added into the component A prepared in the first step according to the mass ratio, and stirred for 15 minutes at the rotating speed of 1150r/min to prepare the environment-friendly waterproof coating.

Example 4

An environment-friendly waterproof coating is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is 7.5: 2.5; the component A comprises the following components in parts by weight: 88 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 33 parts of an inorganic filler, 0.25 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 2.5 parts of a defoaming agent and 2.6 parts of a dispersing agent; the component B comprises the following components in parts by weight: 18 parts of waterproof functional copolymer and 3.5 parts of cement.

The inorganic filler is prepared by mixing double-flying powder, talcum powder, titanium dioxide, sepiolite powder and volcanic ash according to the mass ratio of 1:1:3:2: 3; the defoaming agent is formed by mixing tributyl phosphate, a defoaming agent Demodex 3100 and a defoaming agent BYK088 according to the mass ratio of 1:3: 5; the dispersing agent is formed by mixing sodium hexametaphosphate and sodium polycarboxylate according to the mass ratio of 3: 5.

The preparation method of the waterproof functional copolymer comprises the following steps: adding allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate, N-trihydroxymethyl acrylamide and an initiator into a high boiling point solvent, stirring and reacting for 5.5 hours at 72 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 5 times by using ethanol, and finally drying in a vacuum drying oven at 93 ℃ to constant weight to obtain the waterproof functional copolymer.

The mass ratio of the allyl pentafluorobenzene to the allyl succinimidyl carbonate to the 2-methyl fluoroacrylate to the allyl triphenyl phosphonium bromide to the 3, 4-epoxy cyclohexyl methyl methacrylate to the N-trihydroxymethyl methacrylamide to the initiator to the high boiling point solvent is 1:0.35:1.1:1.8:0.55:2.8:0.075: 33; the initiator is formed by mixing azodiisobutyronitrile and azodiisobutyronitrile according to the mass ratio of 3: 5; the high-boiling-point solvent is formed by mixing dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone according to a mass ratio of 1:2:2: 4; the inert gas is argon.

The cement is ordinary Portland cement 32.5.

the first step is as follows: uniformly mixing the sulfonate-terminated hyperbranched waterborne polyurethane emulsion, the inorganic filler, the 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, the defoaming agent and the dispersing agent in parts by weight, and stirring at the rotating speed of 1450r/min for 32 minutes to prepare a component A;

the second step is that: uniformly mixing the waterproof functional copolymer and the cement in parts by weight, and crushing and sieving with a 190-mesh sieve to prepare a component B;

the third step: when in use, the component B prepared in the second step is added into the component A prepared in the first step according to the mass ratio, and the mixture is stirred for 18 minutes at the rotating speed of 1250r/min to prepare the environment-friendly waterproof coating.

Example 5

An environment-friendly waterproof coating is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is 8: 3; the component A comprises the following components in parts by weight: 90 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 35 parts of an inorganic filler, 0.3 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 3 parts of a defoaming agent and 3 parts of a dispersing agent; the component B comprises the following components in parts by weight: 20 parts of waterproof functional copolymer and 4 parts of cement.

The inorganic filler is volcanic ash; the defoaming agent is tributyl phosphate; the dispersant is a sodium polycarboxylate salt.

The preparation method of the waterproof functional copolymer comprises the following steps: adding allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate, N-trihydroxymethyl acrylamide and an initiator into a high boiling point solvent, stirring and reacting for 6 hours at 75 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 6 times by using ethanol, and finally drying in a vacuum drying oven at 95 ℃ to constant weight to obtain the waterproof functional copolymer.

The mass ratio of the allyl pentafluorobenzene to the allyl succinimidyl carbonate to the 2-methyl fluoroacrylate to the allyl triphenyl phosphonium bromide to the 3, 4-epoxy cyclohexyl methyl methacrylate to the N-trihydroxymethyl methacrylamide to the initiator to the high boiling point solvent is 1:0.4:1.2:2:0.6:3:0.08: 35; the initiator is azobisisobutyronitrile; the high boiling point solvent is N-methyl pyrrolidone; the inert gas is nitrogen. The cement is ordinary Portland cement 32.5.

the first step is as follows: uniformly mixing the sulfonate-terminated hyperbranched waterborne polyurethane emulsion, the inorganic filler, the 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, the defoaming agent and the dispersing agent in parts by weight, and stirring at the rotating speed of 1500r/min for 35 minutes to prepare a component A;

the second step is that: uniformly mixing the waterproof functional copolymer and the cement in parts by weight, and crushing and sieving by a 200-mesh sieve to prepare a component B;

the third step: when in use, the component B prepared in the second step is added into the component A prepared in the first step according to the mass ratio, and the mixture is stirred for 20 minutes at the rotating speed of 1300r/min, so that the environment-friendly waterproof coating is prepared.

Comparative example 1

The embodiment provides an environment-friendly waterproof coating, the formula and the preparation method of which are basically the same as those of embodiment 1, and the difference is that the water-based polyurethane emulsion replaces the sulfonate-terminated hyperbranched water-based polyurethane emulsion; the aqueous polyurethane emulsion is prepared by the method of the embodiment with the application number of 201010209101.1.

Comparative example 2

This example provides an environmentally friendly water-repellent coating having substantially the same formulation and preparation method as in example 1, except that 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine was not added.

Comparative example 3

This example provides an environmentally friendly water-repellent coating, which has a formulation and a preparation method substantially the same as those of example 1, except that allyl succinimidyl carbonate is not added during the preparation of the water-repellent functional copolymer.

Comparative example 4

This example provides an environmentally friendly waterproof coating material, which has substantially the same formulation and preparation method as example 1, except that methyl 2-fluoroacrylate was not added during the preparation of the waterproof functional copolymer.

Comparative example 5

This example provides an environmentally friendly waterproof coating, which has a formulation and a preparation method substantially the same as those of example 1, except that allyl triphenyl phosphonium bromide is not added in the preparation process of the waterproof functional copolymer.

In order to further illustrate the beneficial technical effects of the environment-friendly waterproof coatings related to the embodiments of the present invention, the performance of the environment-friendly waterproof coatings of the embodiments 1 to 5 of the present invention and the comparative examples 1 to 5 of the present invention is tested, the test methods refer to GBT19250-2013 polyurethane waterproof coating, and the test results are shown in table 1.

TABLE 1

As can be seen from Table 1, compared with the comparative product, the environment-friendly waterproof coating disclosed by the embodiment of the invention has more excellent mechanical property, aging resistance and waterproof property, and higher adhesive force; this is a result of the synergistic effect of the components.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An environment-friendly waterproof coating is characterized by comprising a component A and a component B; the mass ratio of the component A to the component B is (5-8) to (1-3); the component A comprises the following components in parts by weight: 80-90 parts of a sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 25-35 parts of an inorganic filler, 0.1-0.3 part of 2,4, 6-tris (aminocaproyl) -1,3, 5-triazine, 1-3 parts of a defoaming agent and 1-3 parts of a dispersing agent; the component B comprises the following components in parts by weight: 10-20 parts of waterproof functional copolymer and 2-4 parts of cement.

2. The environment-friendly waterproof paint as claimed in claim 1, wherein the inorganic filler is at least one of fly ash, talcum powder, titanium dioxide, sepiolite powder and volcanic ash.

3. The environment-friendly waterproof coating material of claim 1, wherein the antifoaming agent is one or more of tributyl phosphate, antifoaming agent D3100, antifoaming agent BYK 088.

4. The environmentally friendly waterproof coating material according to claim 1, wherein the dispersant is sodium hexametaphosphate and/or a sodium polycarboxylate salt.

5. The environmentally friendly waterproof coating material according to claim 1, wherein the preparation method of the waterproof functional copolymer comprises the following steps: adding allyl pentafluorobenzene, allyl succinimidyl carbonate, 2-methyl fluoroacrylate, allyl triphenyl phosphonium bromide, 3, 4-epoxy cyclohexyl methyl methacrylate, N-trihydroxymethyl acrylamide and an initiator into a high boiling point solvent, stirring and reacting for 3-6 hours at 65-75 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 3-6 times by using ethanol, and finally drying in a vacuum drying oven at 85-95 ℃ to constant weight to obtain the waterproof functional copolymer.

6. The environment-friendly waterproof coating material as claimed in claim 5, wherein the mass ratio of the allyl pentafluorobenzene, the allyl succinimidyl carbonate, the methyl 2-fluoroacrylate, the allyl triphenyl phosphonium bromide, the 3, 4-epoxy cyclohexyl methyl methacrylate, the N-trimethylol methacrylamide, the initiator and the high boiling point solvent is 1 (0.2-0.4): 0.8-1.2): 1-2): 0.3-0.6): 2-3: (0.06-0.08): 25-35.

7. The environmentally friendly waterproof coating material according to claim 5, wherein the initiator is at least one of azobisisobutyronitrile and azobisisobutyronitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone; the inert gas is any one of nitrogen, helium, neon and argon.

8. The environmentally friendly waterproof coating material according to claim 1, wherein the cement is ordinary portland cement 32.5.

9. A method for preparing the environmentally friendly waterproof coating material according to any one of claims 1 to 8, comprising the steps of: