CN113265172A - Wear-resistant super-hydrophobic waterproof coating and preparation method thereof - Google Patents
Wear-resistant super-hydrophobic waterproof coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an abrasion-resistant super-hydrophobic waterproof coating, which is sequentially provided with a waterproof putty layer, a bottom coating layer and a finish paint layer from inside to outside. The invention also discloses a preparation method of the wear-resistant super-hydrophobic waterproof coating, which comprises the steps of (1) preparing waterproof putty; (2) preparing a base coat solution; (3) preparing a finishing paint layer solution; (4) and (3) preparing the wear-resistant super-hydrophobic waterproof coating. The invention has the following beneficial effects: (1) the invention has the waterproof function and the abrasion resistant effect; (2) the wear-resistant super-hydrophobic waterproof coating has excellent film forming and self-leveling properties; (3) the coating preparation method and the coating preparation process are scientific and feasible.
Description
Technical Field
The invention relates to the technical field of waterproof coatings, in particular to an abrasion-resistant super-hydrophobic waterproof coating and a preparation method thereof.
Background
The concrete plays an important role in modern building materials, and has wide application fields and complex use environment. The concrete comprises the coupling effect of single or multiple environmental factors such as freeze thawing, water pressure, acid and alkali salt chemical corrosion environment and the like. Concrete structures such as water delivery channels, dams, hydraulic tunnels and the like are served in complex water environments in different states and forms, and due to the multi-factor coupling effect, the durability of concrete is reduced, so that huge maintenance cost is generated, and even serious safety problems are caused, and adverse effects are caused. Therefore, the durability of the concrete is not only related to the quality and the service life of the hydraulic structure, but also has very important influence on national economic construction and social development.
The decrease in concrete durability is mainly caused by the penetration of external aggressive media, while water is the carrier of most aggressive media, and therefore, the prevention of water penetration is crucial for high concrete durability.
The protective coating can form a protective barrier between the concrete and the external environment, thereby effectively preventing or delaying the deterioration of the concrete. However, the traditional protective coating for the concrete surface has certain limitations in the using process, and as the coating is mostly made of organic materials, although some materials are excellent in certain performances, the comprehensive performances of the materials still have certain limitations, such as better abrasion resistance and chemical medium resistance of epoxy resin, but poor scratch resistance; and after the material is in service for a long time, phenomena such as bulging, delamination and the like occur, so that the durability of the coating is reduced.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides an abrasion-resistant super-hydrophobic waterproof coating and a preparation method thereof, aiming at solving the defects of the prior art and overcoming the common aging and corrosion phenomena of different degrees caused by the influences of cold and heat, water level change, water quality deterioration and the like on a hydraulic concrete structure due to the long-term work in a water environment.
The technical scheme is as follows: a wear-resistant super-hydrophobic waterproof coating comprises a waterproof putty layer, a bottom coating layer and a finish paint layer from inside to outside in sequence.
Further, the waterproof putty layer is prepared from ground calcium carbonate, calcium hydroxide, methyl cellulose, bentonite, taibai powder and water in a mass ratio of (15-40): (20-50): (0.3-1.5): (5-15): (10-30): (20-30) and fully stirring to obtain the product.
A preparation method of an abrasion-resistant super-hydrophobic waterproof coating comprises the following steps in parts by weight:
(1) preparing the waterproof putty:
uniformly mixing 15-40 parts of ground calcium carbonate, 20-50 parts of calcium hydroxide, 0.3-1.5 parts of methyl cellulose, 5-15 parts of bentonite and 10-30 parts of taibai powder, adding 20-30 parts of water, and uniformly stirring to obtain waterproof putty;
(2) preparation of undercoat solution:
dissolving 100 parts of epoxy resin in 20-40 parts of organic solvent, stirring, fully dissolving, then adding a curing agent, and uniformly mixing to form a primer solution, wherein:
the molar ratio of epoxy groups in the epoxy resin to active hydrogen in the curing agent is 1: 1.1;
(3) preparation of a topcoat layer solution:
(31) dissolving 50-70 parts of toluene diisocyanate in 20-30 parts of dimethylformamide, and fully stirring to dissolve the toluene diisocyanate to form a TDI solution;
(32) dissolving 5-10 parts of 2-perfluorooctyl ethyl alcohol in 2-3 parts of dimethylformamide, and fully stirring to dissolve the 2-perfluorooctyl ethyl alcohol to obtain a TEOH-8 solution;
(33) adding the TDI solution obtained in the step (31) into a four-neck flask in a nitrogen atmosphere, then slowly adding the TEOH-8 solution obtained in the step (32) into the TDI solution at a dropping speed of 2-4 d/s by using a constant-pressure dropping funnel, and keeping the temperature of the solution at 45-55 ℃ for 2 hours to obtain fluorinated toluene diisocyanate;
(34) raising the temperature of a four-neck flask filled with fluorinated toluene diisocyanate to 60 ℃, adding a proper amount of polytetramethylene glycol to form a reaction solution, continuously stirring, and carrying out reduced pressure distillation to obtain a fluorine-containing polyurethane prepolymer, wherein:
the concentration of free isocyanate in the reaction liquid after adding the polytetramethylene glycol is 0.41-0.45 wt%;
(35) adding 100 parts of fluorinated polyurethane prepolymer into 10-12 parts of organic solvent, uniformly stirring, and then sequentially adding 5-10 parts of flatting agent, 5-10 parts of film forming agent, 5-15 parts of water blocking agent, 1-5 parts of nano particle additive and 10-12 parts of chain extender while stirring to form a finish paint layer solution;
(4) preparing an abrasion-resistant super-hydrophobic waterproof coating:
(41) coating the waterproof putty prepared in the step (1) on a concrete matrix by brushing to form a waterproof putty layer;
(42) after the waterproof putty layer is dried, uniformly coating the base coat paint in the step (2) on the waterproof putty layer in a brushing or rolling way to obtain a base coat;
(43) before the bottom coating is cured, the surface paint layer solution obtained in the step (3) is roll-coated or sprayed on the bottom coating to avoid uneven coating or hanging flow of the surface paint, and after the complete curing, the wear-resistant super-hydrophobic waterproof coating is obtained.
Further, the organic solvent in the step (2) is acetone or butanone.
Further, the epoxy resin in the step (2) is bisphenol A type epoxy resin.
Further, the curing agent in the step (2) is aliphatic amine or aromatic diamine.
Further, the chain extender in the step (35) is 3,3 '-dichloro-4, 4' -diaminodiphenylmethane.
Further, the organic solvent in step (35) is acetone and/or butanone.
Further, the leveling agent in the step (35) is fluorocarbon surfactant or EO comb polyether modified organosilicon.
Further, the film forming agent in the step (35) is dodecyl alcohol ester.
Further, the nanoparticle additive in step (35) is graphene oxide or nano-silica.
Further, the water-blocking agent in the step (35) is glass flakes.
The invention discloses an anti-wear super-hydrophobic waterproof coating and a preparation method thereof, and the anti-wear super-hydrophobic waterproof coating has the following beneficial effects:
(1) the wear-resistant super-hydrophobic waterproof coating comprises a waterproof putty layer, a primer layer and a finish paint layer, has a waterproof function and an anti-abrasion effect, and can be used for obtaining coatings with different anti-abrasion effects by adding a nanoparticle additive and adjusting the addition amount of nanoparticles; the perfluoroalkyl alcohol is used for modifying the polyurethane, so that the surface energy of the coating is reduced, and the hydrophobicity of the coating is improved;
(2) the wear-resistant super-hydrophobic waterproof coating has excellent film-forming and self-leveling characteristics, can quickly form a film on the high-elasticity polyurethane finish paint by adding the film-forming agent and the leveling agent under the conditions of normal temperature and lower temperature, and can reduce the possibility of generating spots and stains during brushing;
(3) the preparation method and the process of the coating are scientific and feasible, the polyurethane prepolymer is reacted with the chain extender, and the finish paint layer is prepared by a spraying or brushing method, so that the coating has controllable performance and reliable quality, and the process is relatively stable and simple.
Description of the drawings:
FIG. 1 is a schematic diagram of an anti-abrasion property test.
The specific implementation mode is as follows:
the following describes in detail specific embodiments of the present invention.
Detailed description of the preferred embodiment 1
A wear-resistant super-hydrophobic waterproof coating comprises a waterproof putty layer, a bottom coating layer and a finish paint layer from inside to outside in sequence.
Further, the waterproof putty layer is prepared from ground calcium carbonate, calcium hydroxide, methyl cellulose, bentonite, taibai powder and water according to a mass ratio of 30: 35: 1: 10: 20: 25 are mixed and fully stirred.
A preparation method of an abrasion-resistant super-hydrophobic waterproof coating comprises the following steps in parts by weight:
(1) preparing the waterproof putty:
uniformly mixing 30 parts of ground calcium carbonate, 35 parts of calcium hydroxide, 1 part of methyl cellulose, 10 parts of bentonite and 20 parts of taibai powder, adding 25 parts of water, and uniformly stirring to obtain waterproof putty;
(2) preparation of undercoat solution:
dissolving 100 parts of epoxy resin in 30 parts of organic solvent, stirring and fully dissolving, then adding a curing agent and uniformly mixing to form a primer coating solution, wherein:
the molar ratio of epoxy groups in the epoxy resin to active hydrogen in the curing agent is 1: 1.1;
(3) preparation of a topcoat layer solution:
(31) dissolving 60 parts of toluene diisocyanate in 25 parts of dimethylformamide, and fully stirring to dissolve the toluene diisocyanate to form a TDI solution;
(32) dissolving 8 parts of 2-perfluorooctyl ethyl alcohol in 2.5 parts of dimethylformamide, and fully stirring to dissolve the 2-perfluorooctyl ethyl alcohol to obtain a TEOH-8 solution;
(33) adding the TDI solution obtained in the step (31) into a four-neck flask under the nitrogen atmosphere, then slowly adding the TEOH-8 solution obtained in the step (32) into the TDI solution at a dropping speed of 3d/s by using a constant-pressure dropping funnel, and keeping the constant temperature at the temperature of 50 ℃ for 2 hours to obtain fluorinated toluene diisocyanate;
(34) raising the temperature of a four-neck flask filled with fluorinated toluene diisocyanate to 60 ℃, adding a proper amount of polytetramethylene glycol to form a reaction solution, continuously stirring, and carrying out reduced pressure distillation to obtain a fluorine-containing polyurethane prepolymer, wherein:
the concentration of free isocyanate in the reaction solution after adding the polytetramethylene glycol is 0.43 wt%;
(35) adding 100 parts of fluorinated polyurethane prepolymer into 11 parts of organic solvent, uniformly stirring, and then sequentially adding 8 parts of flatting agent, 6 parts of film forming agent, 10 parts of water blocking agent, 3 parts of nano particle additive and 11 parts of chain extender while stirring to form a finish paint layer solution;
(4) preparing an abrasion-resistant super-hydrophobic waterproof coating:
(41) coating the waterproof putty prepared in the step (1) on a concrete matrix by brushing to form a waterproof putty layer;
(42) after the waterproof putty layer is dried, uniformly coating the priming paint in the step (2) on the waterproof putty layer in a brushing mode to obtain a priming paint layer;
(43) before the bottom coating is cured, roller coating the surface paint layer solution obtained in the step (3) on the bottom coating to avoid uneven coating or hanging flow of the surface paint, and after the complete curing, obtaining the wear-resistant super-hydrophobic waterproof coating.
Further, the organic solvent in the step (2) is acetone.
Further, the epoxy resin in the step (2) is bisphenol a type epoxy resin (E44).
Further, the curing agent in the step (2) is aliphatic amine.
Further, the chain extender in the step (35) is 3,3 '-dichloro-4, 4' -diaminodiphenylmethane.
Further, the organic solvent in the step (35) is acetone.
Further, the leveling agent in the step (35) is a fluorocarbon surfactant.
Further, the film forming agent in the step (35) is dodecyl alcohol ester.
Further, the nanoparticle additive in step (35) is graphene oxide.
Further, the water-blocking agent in the step (35) is glass flakes.
Specific example 2
A wear-resistant super-hydrophobic waterproof coating comprises a waterproof putty layer, a bottom coating layer and a finish paint layer from inside to outside in sequence.
Further, the waterproof putty layer is prepared from ground calcium carbonate, calcium hydroxide, methyl cellulose, bentonite, taibai powder and water according to a mass ratio of 15: 20: 0.3: 5: 10: 20 are mixed and fully stirred.
A preparation method of an abrasion-resistant super-hydrophobic waterproof coating comprises the following steps in parts by weight:
(1) preparing the waterproof putty:
uniformly mixing 15 parts of ground calcium carbonate, 20 parts of calcium hydroxide, 0.3 part of methyl cellulose, 5 parts of bentonite and 10 parts of taibai powder, adding 20 parts of water, and uniformly stirring to obtain waterproof putty;
(2) preparation of undercoat solution:
dissolving 100 parts of epoxy resin in 20 parts of organic solvent, stirring and fully dissolving, then adding a curing agent and uniformly mixing to form a primer coating solution, wherein:
the molar ratio of epoxy groups in the epoxy resin to active hydrogen in the curing agent is 1: 1.1;
(3) preparation of a topcoat layer solution:
(31) dissolving 50 parts of toluene diisocyanate in 20 parts of dimethylformamide, and fully stirring to dissolve the toluene diisocyanate to form a TDI solution;
(32) dissolving 5 parts of 2-perfluorooctyl ethyl alcohol in 2 parts of dimethylformamide, and fully stirring to dissolve the 2-perfluorooctyl ethyl alcohol to obtain a TEOH-8 solution;
(33) adding the TDI solution obtained in the step (31) into a four-neck flask under the nitrogen atmosphere, then slowly adding the TEOH-8 solution obtained in the step (32) into the TDI solution at a dropping speed of 2d/s by using a constant-pressure dropping funnel, and keeping the constant temperature at the temperature of 45 ℃ for 2 hours to obtain fluorinated toluene diisocyanate;
(34) raising the temperature of a four-neck flask filled with fluorinated toluene diisocyanate to 60 ℃, adding a proper amount of polytetramethylene glycol to form a reaction solution, continuously stirring, and carrying out reduced pressure distillation to obtain a fluorine-containing polyurethane prepolymer, wherein:
the concentration of free isocyanate in the reaction solution after adding the polytetramethylene glycol is 0.41 wt%;
(35) adding 100 parts of fluorinated polyurethane prepolymer into 10 parts of organic solvent, uniformly stirring, and then sequentially adding 5 parts of flatting agent, 5 parts of film forming agent, 5 parts of water blocking agent, 1 part of nano particle additive and 10 parts of chain extender while stirring to form a finish paint layer solution;
(4) preparing an abrasion-resistant super-hydrophobic waterproof coating:
(41) coating the waterproof putty prepared in the step (1) on a concrete matrix by brushing to form a waterproof putty layer;
(42) after the waterproof putty layer is dried, uniformly coating the priming paint in the step (2) on the waterproof putty layer in a rolling coating mode to obtain a priming paint layer;
(43) and (3) before the bottom coating is cured, spraying the surface paint layer solution obtained in the step (3) on the bottom coating to avoid uneven coating or hanging flow of the surface paint, and obtaining the wear-resistant super-hydrophobic waterproof coating after complete curing.
Further, the organic solvent in the step (2) is butanone.
Further, the epoxy resin in the step (2) is bisphenol a type epoxy resin (E44).
Further, the curing agent in the step (2) is aromatic diamine.
Further, the chain extender in the step (35) is 3,3 '-dichloro-4, 4' -diaminodiphenylmethane.
Further, the organic solvent in the step (35) is butanone.
Further, the leveling agent in the step (35) is EO comb polyether modified organic silicon.
Further, the film forming agent in the step (35) is dodecyl alcohol ester.
Further, the nanoparticle additive in step (35) is nanosilica.
Further, the water-blocking agent in the step (35) is glass flakes.
Specific example 3
A wear-resistant super-hydrophobic waterproof coating comprises a waterproof putty layer, a bottom coating layer and a finish paint layer from inside to outside in sequence.
Further, the waterproof putty layer is prepared from ground calcium carbonate, calcium hydroxide, methyl cellulose, bentonite, taibai powder and water according to a mass ratio of 40: 50: 1.5: 5: 30: 30 are mixed and fully stirred.
A preparation method of an abrasion-resistant super-hydrophobic waterproof coating comprises the following steps in parts by weight:
(1) preparing the waterproof putty:
uniformly mixing 40 parts of heavy calcium carbonate, 50 parts of calcium hydroxide, 1.5 parts of methyl cellulose, 15 parts of bentonite and 30 parts of taibai powder, adding 30 parts of water, and uniformly stirring to obtain waterproof putty;
(2) preparation of undercoat solution:
dissolving 100 parts of epoxy resin in 40 parts of organic solvent, stirring and fully dissolving, then adding a curing agent and uniformly mixing to form a primer coating solution, wherein:
the molar ratio of epoxy groups in the epoxy resin to active hydrogen in the curing agent is 1: 1.1;
(3) preparation of a topcoat layer solution:
(31) dissolving 70 parts of toluene diisocyanate in 30 parts of dimethylformamide, and fully stirring to dissolve the toluene diisocyanate to form a TDI solution;
(32) dissolving 10 parts of 2-perfluorooctyl ethyl alcohol in 3 parts of dimethylformamide, and fully stirring to dissolve the 2-perfluorooctyl ethyl alcohol to obtain a TEOH-8 solution;
(33) adding the TDI solution obtained in the step (31) into a four-neck flask under the nitrogen atmosphere, then slowly adding the TEOH-8 solution obtained in the step (32) into the TDI solution at a dropping speed of 4d/s by using a constant-pressure dropping funnel, and keeping the constant temperature at the temperature of 55 ℃ for 2 hours to obtain fluorinated toluene diisocyanate;
(34) raising the temperature of a four-neck flask filled with fluorinated toluene diisocyanate to 60 ℃, adding a proper amount of polytetramethylene glycol to form a reaction solution, continuously stirring, and carrying out reduced pressure distillation to obtain a fluorine-containing polyurethane prepolymer, wherein:
the concentration of free isocyanate in the reaction solution after adding the polytetramethylene glycol is 0.45 wt%;
(35) adding 100 parts of fluorinated polyurethane prepolymer into 12 parts of organic solvent, uniformly stirring, and then sequentially adding 10 parts of flatting agent, 10 parts of film forming agent, 15 parts of water blocking agent, 5 parts of nano particle additive and 12 parts of chain extender while stirring to form a finish paint layer solution;
(4) preparing an abrasion-resistant super-hydrophobic waterproof coating:
(41) coating the waterproof putty prepared in the step (1) on a concrete matrix by brushing to form a waterproof putty layer;
(42) after the waterproof putty layer is dried, uniformly coating the priming paint in the step (2) on the waterproof putty layer in a brushing mode to obtain a priming paint layer;
(43) before the bottom coating is cured, roller coating the surface paint layer solution obtained in the step (3) on the bottom coating to avoid uneven coating or hanging flow of the surface paint, and after the complete curing, obtaining the wear-resistant super-hydrophobic waterproof coating.
Further, the organic solvent in the step (2) is butanone.
Further, the epoxy resin in the step (2) is bisphenol a type epoxy resin (E44).
Further, the curing agent in the step (2) is aliphatic amine.
Further, the chain extender in the step (35) is 3,3 '-dichloro-4, 4' -diaminodiphenylmethane.
Further, the organic solvent in step (35) is equal volume of acetone and butanone.
Further, the leveling agent in the step (35) is EO comb polyether modified organic silicon.
Further, the film forming agent in the step (35) is dodecyl alcohol ester.
Further, the nanoparticle additive in step (35) is graphene oxide.
Further, the water-blocking agent in the step (35) is glass flakes.
The abrasion resistance of the prepared coating is analyzed by an underwater steel ball method.
Firstly, two C30 concrete standard samples are prepared, the surface of one standard sample is coated with the wear-resistant super-hydrophobic waterproof coating prepared in the specific example 1 and is marked as a sample A, the other concrete sample is marked as a sample B, for comparison, the weight loss of the two samples in different time periods is tested under the condition of 1200rmp rotating speed, and the result is shown in figure 1. It can be seen that sample a has a much lower weight loss than sample B, i.e. the coating obtained by the present invention has superior abrasion resistance compared to concrete.
Further measuring the wetting angles of the two samples by using a contact angle measuring instrument, and measuring that the wetting angle of the sample A is more than 130, and the wetting angle of the sample B is approximately equal to 0, so that the prepared coating has good hydrophobicity.
The embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. The wear-resistant super-hydrophobic waterproof coating is characterized by sequentially comprising a waterproof putty layer, a bottom coating layer and a finish paint layer from inside to outside.
2. The abrasion-resistant super-hydrophobic waterproof coating as claimed in claim 1, wherein the waterproof putty layer is prepared from ground calcium carbonate, calcium hydroxide, methyl cellulose, bentonite, taibai powder and water in a mass ratio of (15-40): (20-50): (0.3-1.5): (5-15): (10-30): (20-30) and fully stirring to obtain the product.
3. The preparation method of the wear-resistant super-hydrophobic waterproof coating is characterized by comprising the following steps of:
(1) preparing the waterproof putty:
uniformly mixing 15-40 parts of ground calcium carbonate, 20-50 parts of calcium hydroxide, 0.3-1.5 parts of methyl cellulose, 5-15 parts of bentonite and 10-30 parts of taibai powder, adding 20-30 parts of water, and uniformly stirring to obtain waterproof putty;
(2) preparation of undercoat solution:
dissolving 100 parts of epoxy resin in 20-40 parts of organic solvent, stirring, fully dissolving, then adding a curing agent, and uniformly mixing to form a primer solution, wherein:
the molar ratio of epoxy groups in the epoxy resin to active hydrogen in the curing agent is 1: 1.1;
(3) preparation of a topcoat layer solution:
(31) dissolving 50-70 parts of toluene diisocyanate in 20-30 parts of dimethylformamide, and fully stirring to dissolve the toluene diisocyanate to form a TDI solution;
(32) dissolving 5-10 parts of 2-perfluorooctyl ethyl alcohol in 2-3 parts of dimethylformamide, and fully stirring to dissolve the 2-perfluorooctyl ethyl alcohol to obtain a TEOH-8 solution;
(33) adding the TDI solution obtained in the step (31) into a four-neck flask in a nitrogen atmosphere, then slowly adding the TEOH-8 solution obtained in the step (32) into the TDI solution at a dropping speed of 2-4 d/s by using a constant-pressure dropping funnel, and keeping the temperature of the solution at 45-55 ℃ for 2 hours to obtain fluorinated toluene diisocyanate;
(34) raising the temperature of a four-neck flask filled with fluorinated toluene diisocyanate to 60 ℃, adding a proper amount of polytetramethylene glycol to form a reaction solution, continuously stirring, and carrying out reduced pressure distillation to obtain a fluorine-containing polyurethane prepolymer, wherein:
the concentration of free isocyanate in the reaction liquid after adding the polytetramethylene glycol is 0.41-0.45 wt%;
(35) adding 100 parts of fluorinated polyurethane prepolymer into 10-12 parts of organic solvent, uniformly stirring, and then sequentially adding 5-10 parts of flatting agent, 5-10 parts of film forming agent, 5-15 parts of water blocking agent, 1-5 parts of nano particle additive and 10-12 parts of chain extender while stirring to form a finish paint layer solution;
(4) preparing an abrasion-resistant super-hydrophobic waterproof coating:
(41) coating the waterproof putty prepared in the step (1) on a concrete matrix by brushing to form a waterproof putty layer;
(42) after the waterproof putty layer is dried, uniformly coating the base coat paint in the step (2) on the waterproof putty layer in a brushing or rolling way to obtain a base coat;
(43) before the bottom coating is cured, the surface paint layer solution obtained in the step (3) is roll-coated or sprayed on the bottom coating to avoid uneven coating or hanging flow of the surface paint, and after the complete curing, the wear-resistant super-hydrophobic waterproof coating is obtained.
4. The method for preparing an abrasion-resistant superhydrophobic and waterproof coating of claim 3, wherein the organic solvent in the step (2) is acetone or butanone.
5. The method for preparing an abrasion-resistant superhydrophobic and waterproof coating of claim 3, wherein the epoxy resin in the step (2) is bisphenol A type epoxy resin.
6. The method for preparing an abrasion-resistant superhydrophobic and waterproof coating of claim 3, wherein the curing agent in the step (2) is aliphatic amine or aromatic diamine.
7. The method for preparing an abrasion-resistant superhydrophobic and waterproof coating layer according to claim 3, wherein the chain extender in the step (35) is 3,3 '-dichloro-4, 4' -diaminodiphenylmethane.
8. The method for preparing an abrasion-resistant superhydrophobic and waterproof coating according to claim 3, wherein the organic solvent in the step (35) is acetone and/or butanone.
9. The method for preparing an abrasion-resistant super-hydrophobic waterproof coating according to claim 3, wherein the leveling agent in the step (35) is a fluorocarbon surfactant or EO comb polyether modified silicone.
10. The method for preparing an abrasion-resistant super-hydrophobic waterproof coating according to claim 3, wherein the film forming agent in step (35) is dodecanol ester, the nanoparticle additive in step (35) is graphene oxide or nano-silica, and the water-blocking agent in step (35) is glass flakes.
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Application publication date: 20210817 |