阅读说明：本技术 一种环保水性漆及其制备方法 (Environment-friendly water-based paint and preparation method thereof ) 是由 孙爱芬 于 2019-12-09 设计创作，主要内容包括：本发明公开了一种环保水性漆,其特征在于,由以下重量份的原料制成：含氟丙烯酸类成膜聚合物50-60份、聚氧乙烯月桂醚羧酸改性超支化聚乙烯亚胺15-20份、季铵盐15改性双[双[4-(二乙氨基)苯基]甲基]醚5-10份、甘油丙氧基三缩水甘油基醚1-3份、引发剂0.05-0.1份、水溶性聚噻吩修饰纳米二氧化钛5-10份、流平剂1-3份、消泡剂1-3份、水15-25份。本发明还公开了所述环保水性漆的制备方法和使用方法。本发明公开的环保水性漆具有综合性能优异,耐水性、耐候性、化学稳定性好,硬度和耐磨度高,使用安全环保的优点。(The invention discloses an environment-friendly water-based paint which is characterized by being prepared from the following raw materials in parts by weight: 50-60 parts of fluorine-containing acrylic film-forming polymer, 15-20 parts of polyoxyethylene lauryl ether carboxylic acid modified hyperbranched polyethyleneimine, 5-10 parts of quaternary ammonium salt 15 modified bis [4- (diethylamino) phenyl ] methyl ] ether, 1-3 parts of glycerol propoxy triglycidyl ether, 0.05-0.1 part of initiator, 5-10 parts of water-soluble polythiophene modified nano titanium dioxide, 1-3 parts of flatting agent, 1-3 parts of defoaming agent and 15-25 parts of water. The invention also discloses a preparation method and a use method of the environment-friendly water-based paint. The environment-friendly water-based paint disclosed by the invention has the advantages of excellent comprehensive performance, good water resistance, weather resistance and chemical stability, high hardness and wear resistance, safety in use and environment friendliness.)

1. The environment-friendly water-based paint is characterized by being prepared from the following raw materials in parts by weight: 50-60 parts of fluorine-containing acrylic film-forming polymer, 15-20 parts of polyoxyethylene lauryl ether carboxylic acid modified hyperbranched polyethyleneimine, 5-10 parts of quaternary ammonium salt 15 modified bis [4- (diethylamino) phenyl ] methyl ] ether, 1-3 parts of glycerol propoxy triglycidyl ether, 0.05-0.1 part of initiator, 5-10 parts of water-soluble polythiophene modified nano titanium dioxide, 1-3 parts of flatting agent, 1-3 parts of defoaming agent and 15-25 parts of water; the fluorine-containing acrylic film-forming polymer is prepared by free radical polymerization of 2-methyl-2-acrylic acid-2, 3-dihydroxypropyl ester, perfluoro-n-propyl vinyl ether, methacrylic acid, (5R) -5- [ (1E,3R) -4, 4-difluoro-3-hydroxy-4-phenyl-1-butenyl ] -1- [6- (1H-tetrazol-5-yl) hexyl ] -2-pyrrolidone, 4- { (E) -2- [3, 5-di (sulfooxy) phenyl ] vinyl } phenyl hydrogen sulfate and mono-9-octadecenoic acid-D-sorbitol ester.

2. The environment-friendly water-based paint as claimed in claim 1, wherein the initiator is selected from one or more of azobisisobutylamidine hydrochloride, azobisisobutylimidazoline hydrochloride and azobisisopropylimidazoline; the defoaming agent is preferably one or more of HW-241 defoaming agent, SQ701 defoaming agent, SQ821 defoaming agent or SQ901 defoaming agent; the leveling agent is preferably an HW5000 leveling agent or a BYK-380N leveling agent.

3. The environmentally friendly water-based paint according to claim 1, wherein the preparation method of the fluorine-containing acrylic film-forming polymer comprises the following steps: adding 2-methyl-2-propenoic acid-2, 3-dihydroxypropyl ester, perfluor n-propyl vinyl ether, methacrylic acid, (5R) -5- [ (1E,3R) -4, 4-difluoro-3-hydroxy-4-phenyl-1-butenyl ] -1- [6- (1H-tetrazol-5-yl) hexyl ] -2-pyrrolidone, 4- { (E) -2- [3, 5-di (sulfooxy) phenyl ] vinyl } phenyl hydrogen sulfate, mono-9-octadecenoic acid-D-sorbitol ester, azobisisobutyronitrile into high boiling point solvent, stirring and reacting at 80-90 deg.C for 6-8 hours under nitrogen or inert gas atmosphere, then precipitating in acetone, and drying in a vacuum drying oven at 80-90 deg.C to constant weight.

4. The environment-friendly water-based paint according to claim 3, wherein the mass ratio of the 2-methyl-2-propenoic acid-2, 3-dihydroxypropyl ester, perfluoro-n-propyl vinyl ether, methacrylic acid, (5R) -5- [ (1E,3R) -4, 4-difluoro-3-hydroxy-4-phenyl-1-butenyl ] -1- [6- (1H-tetrazol-5-yl) hexyl ] -2-pyrrolidone, 4- { (E) -2- [3, 5-di (sulfooxy) phenyl ] vinyl } phenyl hydrosulfate, mono-9-octadecenoic acid-D-sorbitol ester, azobisisobutyronitrile, and high boiling point solvent is 1:1:0.5:1:0.5:0.5 (0.02-0.04): 15-20.04 ).

5. The environment-friendly water-based paint according to claim 3, wherein the high-boiling point solvent is one or more selected from dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone; the inert gas is selected from helium, neon and argon.

6. The environment-friendly water-based paint according to claim 1, wherein the preparation method of the polyoxyethylene lauryl ether carboxylic acid modified hyperbranched polyethyleneimine comprises the following steps: adding polyoxyethylene lauryl ether carboxylic acid and hyperbranched polyethyleneimine into dimethyl sulfoxide, adding 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline, stirring and reacting at 90-100 ℃ for 6-8 hours, and then removing the solvent by rotary evaporation; the mass ratio of the polyoxyethylene lauryl ether carboxylic acid to the hyperbranched polyethyleneimine to the dimethyl sulfoxide to the 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline is 2:1 (10-15) to 0.1-0.3.

7. The environment-friendly water-based paint according to claim 1, wherein the preparation method of the quaternary ammonium salt 15 modified bis [4- (diethylamino) phenyl ] methyl ] ether comprises the following steps: adding quaternary ammonium salt 15 and bis [4- (diethylamino) phenyl ] methyl ] ether into diethyl ether, stirring at 30-40 deg.C for reaction for 10-12 hr, removing diethyl ether by rotary evaporation, washing with ethyl acetate for 3-5 times, and removing ethyl acetate by rotary evaporation; the mass ratio of the quaternary ammonium salt 15 to the bis [4- (diethylamino) phenyl ] methyl ] ether to the diethyl ether is 1.58:1 (10-15).

8. The environment-friendly water-based paint as claimed in claim 1, wherein the preparation method of the water-soluble polythiophene-modified nano titanium dioxide comprises the following steps: dispersing nano titanium dioxide in ethanol, adding 3- (trihydroxy silicon base) propane sulfonic acid, stirring and reacting for 6-8 hours at 60-80 ℃, adding water-soluble polythiophene with a side chain containing N-methylimidazole, continuously keeping the temperature, stirring and reacting for 3-5 hours, centrifuging, washing for 3-5 times by using water, and then placing in a vacuum drying oven to be dried to constant weight; the mass ratio of the nano titanium dioxide, the ethanol, the 3- (trihydroxy silicon base) propane sulfonic acid and the water-soluble polythiophene with the side chain having N-methylimidazole is (3-5): (20-25):1: 0.5.

9. The environment-friendly water-based paint according to any one of claims 1 to 8, wherein the preparation method of the environment-friendly water-based paint comprises the following steps: mixing the raw materials in proportion, uniformly dispersing by using a high-speed dispersion machine, grinding for 20-30min by using a sand mill, and filtering to obtain the environment-friendly water-based paint.

10. The environment-friendly water-based paint according to any one of claims 1 to 8, wherein the use method of the environment-friendly water-based paint comprises the following steps: the environment-friendly water-based paint is uniformly coated on a base material and is cured at the temperature of 100-120 ℃ to form an aqueous paint film.

Technical Field

The invention relates to the technical field of paint vehicles, in particular to an environment-friendly water-based paint and a preparation method thereof.

Background

In recent years, with the progress of society and the rapid development of economy, people have higher requirements on the quality level of life, pursue perfect life, substances and the like, have higher requirements on decoration materials in life, and are required to bring comfort and aesthetic feeling to people as paint which is one of common decoration materials, and the paint is environment-friendly, pollution-free, excellent in comprehensive performance, convenient to construct, good in water resistance, and good in fullness and hardness.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the environment-friendly water-based paint and the preparation method thereof, and the preparation method has the advantages of simple process, easy operation, easily obtained raw materials, low preparation cost, low dependence on equipment and suitability for large-scale production; the prepared environment-friendly water-based paint overcomes the defects that the water-based paint in the prior art has general comprehensive performance, poor chemical performance, low physical indexes such as hardness and abrasion resistance and cannot meet the application requirements of harsh occasions, and has the advantages of excellent comprehensive performance, good water resistance, weather resistance and chemical stability, high hardness and abrasion resistance, safety in use and environment friendliness.

In order to achieve the aim, the invention adopts the technical scheme that the environment-friendly water-based paint is prepared from the following raw materials in parts by weight: 50-60 parts of fluorine-containing acrylic film-forming polymer, 15-20 parts of polyoxyethylene lauryl ether carboxylic acid modified hyperbranched polyethyleneimine, 5-10 parts of quaternary ammonium salt 15 modified bis [4- (diethylamino) phenyl ] methyl ] ether, 1-3 parts of glycerol propoxy triglycidyl ether, 0.05-0.1 part of initiator, 5-10 parts of water-soluble polythiophene modified nano titanium dioxide, 1-3 parts of flatting agent, 1-3 parts of defoaming agent and 15-25 parts of water; the fluorine-containing acrylic film-forming polymer is prepared by free radical polymerization of 2-methyl-2-acrylic acid-2, 3-dihydroxypropyl ester, perfluoro-n-propyl vinyl ether, methacrylic acid, (5R) -5- [ (1E,3R) -4, 4-difluoro-3-hydroxy-4-phenyl-1-butenyl ] -1- [6- (1H-tetrazol-5-yl) hexyl ] -2-pyrrolidone, 4- { (E) -2- [3, 5-di (sulfooxy) phenyl ] vinyl } phenyl hydrogen sulfate and mono-9-octadecenoic acid-D-sorbitol ester.

Further, the initiator is selected from one or more of azobisisobutylamidine hydrochloride, azobisisobutylimidazoline hydrochloride and azobisisopropylimidazoline.

Further, the defoaming agent is preferably one or more of HW-241 defoaming agent, SQ701 defoaming agent, SQ821 defoaming agent or SQ901 defoaming agent.

Further, the leveling agent is preferably an HW5000 leveling agent or a BYK-380N leveling agent.

Further, the preparation method of the fluorine-containing acrylic film-forming polymer comprises the following steps: adding 2-methyl-2-propenoic acid-2, 3-dihydroxypropyl ester, perfluor n-propyl vinyl ether, methacrylic acid, (5R) -5- [ (1E,3R) -4, 4-difluoro-3-hydroxy-4-phenyl-1-butenyl ] -1- [6- (1H-tetrazol-5-yl) hexyl ] -2-pyrrolidone, 4- { (E) -2- [3, 5-di (sulfooxy) phenyl ] vinyl } phenyl hydrogen sulfate, mono-9-octadecenoic acid-D-sorbitol ester, azobisisobutyronitrile into high boiling point solvent, stirring and reacting at 80-90 deg.C for 6-8 hours under nitrogen or inert gas atmosphere, then precipitating in acetone, and drying in a vacuum drying oven at 80-90 deg.C to constant weight.

Preferably, the mass ratio of the 2-methyl-2-propenoic acid-2, 3-dihydroxypropyl ester, perfluoro-n-propyl vinyl ether, methacrylic acid, (5R) -5- [ (1E,3R) -4, 4-difluoro-3-hydroxy-4-phenyl-1-butenyl ] -1- [6- (1H-tetrazol-5-yl) hexyl ] -2-pyrrolidone, 4- { (E) -2- [3, 5-di (sulfooxy) phenyl ] vinyl } phenyl hydrosulfate, mono-9-octadecenoic acid-D-sorbitol ester, azobisisobutyronitrile, high boiling point solvent is 1:1:0.5:1:0.5: (0.02-0.04): (15-20).

Preferably, the high boiling point solvent is selected from one or more of dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone; the inert gas is selected from helium, neon and argon.

Further, the preparation method of the polyoxyethylene lauryl ether carboxylic acid modified hyperbranched polyethyleneimine comprises the following steps: adding polyoxyethylene lauryl ether carboxylic acid and hyperbranched polyethyleneimine into dimethyl sulfoxide, adding 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline, stirring and reacting at 90-100 ℃ for 6-8 hours, and then removing the solvent by rotary evaporation.

Preferably, the mass ratio of the polyoxyethylene lauryl ether carboxylic acid to the hyperbranched polyethyleneimine to the dimethyl sulfoxide to the 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline is 2:1 (10-15) to (0.1-0.3).

Further, the preparation method of the quaternary ammonium salt 15 modified bis [4- (diethylamino) phenyl ] methyl ] ether comprises the following steps: adding quaternary ammonium salt 15 and bis [4- (diethylamino) phenyl ] methyl ] ether into diethyl ether, stirring at 30-40 deg.C for 10-12 hr, removing diethyl ether by rotary evaporation, washing with ethyl acetate for 3-5 times, and removing ethyl acetate by rotary evaporation.

Preferably, the mass ratio of the quaternary ammonium salt 15 to the bis [4- (diethylamino) phenyl ] methyl ] ether to the diethyl ether is 1.58:1 (10-15).

Further, the preparation method of the water-soluble polythiophene modified nano titanium dioxide comprises the following steps: dispersing nano titanium dioxide in ethanol, adding 3- (trihydroxy silicon base) propane sulfonic acid, stirring and reacting for 6-8 hours at 60-80 ℃, adding water-soluble polythiophene with a side chain containing N-methylimidazole, continuously keeping the temperature, stirring and reacting for 3-5 hours, centrifuging, washing for 3-5 times by using water, and then placing in a vacuum drying oven to dry to constant weight.

Preferably, the mass ratio of the nano titanium dioxide, the ethanol, the 3- (trihydroxy silicon base) propane sulfonic acid and the water-soluble polythiophene with the side chain having N-methylimidazole is (3-5): (20-25):1: 0.5.

Further, the preparation method of the environment-friendly water-based paint comprises the following steps: mixing the raw materials in proportion, uniformly dispersing by using a high-speed dispersion machine, grinding for 20-30min by using a sand mill, and filtering to obtain the environment-friendly water-based paint.

Further, the use method of the environment-friendly water-based paint comprises the following steps: the environment-friendly water-based paint is uniformly coated on a base material and is cured at the temperature of 100-120 ℃ to form an aqueous paint film.

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

(1) the environment-friendly water-based paint provided by the invention has the advantages of simple preparation method, easy operation, easily available raw materials, low manufacturing cost, low dependence on equipment, suitability for large-scale production, convenience in use and strong practicability.

(2) The environment-friendly water-based paint provided by the invention overcomes the defects that the water-based paint in the prior art has general comprehensive performance, poor chemical performance, low physical indexes such as hardness and wear resistance and cannot meet the application requirements of harsh occasions, and has the advantages of excellent comprehensive performance, good water resistance, weather resistance and chemical stability, high hardness and wear resistance, safety in use and environment friendliness.

(3) According to the environment-friendly water-based paint provided by the invention, the fluorine-containing acrylic film-forming polymer is used as the film-forming polymer, the film-forming property is good, the water solubility is good, the formed paint film has strong adhesive force with a base material due to more active hydroxyl groups, amino groups and sulfonic acid groups contained in a molecular chain, and a structure containing fluorine ether, pyrrolidone and tetrazole is introduced through copolymerization, so that the comprehensive performance of the paint film is improved, the water resistance is better, the chemical stability is better, and the drying is faster; the curing stage and the added substance with the quaternary ammonium salt structure generate ion crosslinking, so that a paint film forms a three-dimensional network structure, and the comprehensive performance, hardness and wear resistance of the paint film are further improved.

(4) According to the environment-friendly water-based paint provided by the invention, the water-soluble polythiophene is added to modify the nano titanium dioxide, so that the photocatalytic activity of the titanium dioxide is improved, the air purification effect is achieved, and the comprehensive performance of a paint film can be improved after the water-soluble polythiophene is added.

(5) According to the environment-friendly water-based paint provided by the invention, the quaternary ammonium salt 15 modified bis [4- (diethylamino) phenyl ] methyl ] ether is added, so that the water-based paint has better hydrophilicity, the binding force between the water-based paint and a base material is improved due to the existence of the quaternary ammonium salt and the introduction of more amino groups, the formaldehyde purification rate is improved, and in a curing stage, a three-dimensional network structure is formed through polymerization, so that the comprehensive performance of a paint film is further improved.

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 side chain belt N-methylimidazole water-soluble polythiophene is prepared in advance, and the preparation method refers to the following steps: synthesis and visual biological detection of water-soluble polythiophene, queen tree, macromolecule notification, stage 10, 2011; other raw materials were all purchased commercially.