CN111253825A - Water-based acrylic acid graft modified polysiloxane coating, preparation method and application - Google Patents
Water-based acrylic acid graft modified polysiloxane coating, preparation method and application Download PDFInfo
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- CN111253825A CN111253825A CN201811467896.9A CN201811467896A CN111253825A CN 111253825 A CN111253825 A CN 111253825A CN 201811467896 A CN201811467896 A CN 201811467896A CN 111253825 A CN111253825 A CN 111253825A
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- modified polysiloxane
- polysiloxane coating
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- -1 polysiloxane Polymers 0.000 title claims abstract description 51
- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 50
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 239000011248 coating agent Substances 0.000 title claims abstract description 33
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 50
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000000839 emulsion Substances 0.000 claims abstract description 18
- 239000013530 defoamer Substances 0.000 claims abstract description 10
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 238000009736 wetting Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 9
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 3
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 125000003700 epoxy group Chemical group 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- FVXBTPGZQMNAEZ-UHFFFAOYSA-N 3-amino-2-methylpropan-1-ol Chemical group NCC(C)CO FVXBTPGZQMNAEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 2
- 229910002808 Si–O–Si Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C09D151/085—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds on to polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a water-based acrylic acid graft modified polysiloxane coating, a preparation method and application thereof, wherein the water-based acrylic acid graft modified polysiloxane coating is composed of a main agent and a curing agent, and the ratio of the main agent to the curing agent is (23-25) in parts by weight: (1-2), the main agent comprises 60-70 parts by mass of water-based resin emulsion, 15-20 parts by mass of pigment, 5-10 parts by mass of filler, 0.5-1.0 part by mass of anti-settling agent, 1.0-1.5 parts by mass of film forming additive, 0.1-0.2 part by mass of pH regulator, 2-4 parts by mass of deionized water, 0.05-0.10 part by mass of defoamer I, 0.5-1 part by mass of wetting dispersant and 0.1-0.6 part by mass of defoamer II, and the curing agent is a water-based curing agent containing epoxy and alkoxy.
Description
Technical Field
The invention belongs to the technical field of water-based anticorrosive coatings, and particularly relates to a water-based acrylic acid graft modified polysiloxane coating, and a preparation method and application thereof.
Background
In the production and construction processes of the traditional solvent-based paint, a lot of organic solvents are required to be added, and certain harm is caused to human health and environment. With the progress of social science and technology and the improvement of human cognition level, people continuously realize the harm brought by solvent-based coatings, namely, the emission of a large amount of Volatile Organic Compounds (VOC) can damage the global ecological environment and threaten the health of human beings. At present, some laws and regulations are provided at home and abroad aiming at the matters, and the environmental regulations strictly limit the discharge amount of Volatile Organic Compounds (VOC), harmful solvents and heavy metal content. The water paint has the characteristics of green, no pollution, safety, reliability and the like, and the water paint gradually occupies the market of the oil paint from the current situation.
Compared with polyurethane coatings, polysiloxane coatings have excellent gloss and color retention and are isocyanate-free. The properties of silicone coatings are superior in terms of protection and safety, health and environmental protection. The outstanding gloss and color retention of polysiloxanes is due to the fact that the strength of the siloxane bond (Si-O-Si strength of 446KJ/mol) is higher than the strength of the carbon-carbon bond (C-C strength of 358KJ/mol), and therefore a higher energy is required to open it. However, when a polysiloxane coating is formed into a film, the polysiloxane coating generally needs to be baked at a high temperature of 200 ℃, the energy consumption is large, the operation is complicated, and the weather resistance of the dried film is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a preparation method of a water-based acrylic acid graft modified polysiloxane coating.
The invention also aims to provide the water-based acrylic acid graft modified polysiloxane coating obtained by the preparation method, which has the characteristics of normal-temperature curing, safety, environmental protection and high weather resistance.
The purpose of the invention is realized by the following technical scheme.
The water-based acrylic acid graft modified polysiloxane coating comprises a main agent and a curing agent, wherein the ratio of the main agent to the curing agent is (23-25) in parts by mass: (1-2) wherein,
the main agent comprises 60-70 parts by mass of water-based resin emulsion, 15-20 parts by mass of pigment, 5-10 parts by mass of filler, 0.5-1.0 part by mass of anti-settling agent, 1.0-1.5 parts by mass of film forming additive, 0.1-0.2 part by mass of pH regulator, 2-4 parts by mass of deionized water, 0.05-0.10 part by mass of defoaming agent I, 0.5-1 part by mass of wetting dispersant and 0.1-0.6 part by mass of defoaming agent II, the water-based resin emulsion is water-based acrylic acid graft modified polysiloxane resin, the pigment is rutile titanium dioxide, the filler is talcum powder, the anti-settling agent is hydrophilic bentonite, the film-forming assistant is an alcohol ether solvent, the pH regulator is an alcamine neutralizer, the first defoaming agent and the second defoaming agent are silicon-containing defoaming agents, and the wetting dispersant is a modified polyacrylate high-molecular polymer;
the curing agent is a water-based curing agent containing epoxy groups and alkoxy groups.
In the technical scheme, the curing agent is a curing agent for silicon acrylic resin.
In the technical scheme, the particle size of the talcum powder is 800-1200 meshes.
In the technical scheme, the alcohol amine neutralizing agent is 2-aminomethyl-1-propanol.
In the technical scheme, the first defoaming agent is polysiloxane hydrophobic particles.
In the technical scheme, the second defoaming agent is a water-based defoaming agent based on an organic modified polydimethylsiloxane structure.
The preparation method of the waterborne acrylic acid graft modified polysiloxane coating comprises the following steps:
step 1, preparing a main agent: adding a film forming auxiliary agent, deionized water and part of aqueous resin emulsion, stirring uniformly, adding a pH regulator and a first defoaming agent, uniformly dispersing for 10-30 min, adding an anti-settling agent, uniformly dispersing for 10-30 min, adding a pigment and a filler, uniformly dispersing for 10-30 min, adding the rest aqueous resin emulsion, uniformly mixing, adding a wetting dispersant and a second defoaming agent under the condition of stirring, and uniformly dispersing for 10-30 min, wherein the ratio of the first-time addition of the aqueous resin emulsion to the second-time addition of the aqueous resin emulsion is (25-30): (35-45);
and 2, uniformly mixing the main agent and the curing agent.
The application of the water-based acrylic acid graft modified polysiloxane coating in improving the adhesive force.
In the technical scheme, after the water-based acrylic acid graft modified polysiloxane coating is sprayed, the adhesive force of a paint film of the water-based acrylic acid graft modified polysiloxane coating is grade 1.
The application of the water-based acrylic acid graft modified polysiloxane coating in improving water resistance.
In the technical scheme, after the water-based acrylic acid graft modified polysiloxane coating is sprayed and soaked in deionized water for 168 hours, a paint film of the water-based acrylic acid graft modified polysiloxane coating has no foaming and wrinkling phenomena.
The application of the water-based acrylic acid graft modified polysiloxane coating in improving the weather resistance.
In the technical scheme, after the water-based acrylic acid graft modified polysiloxane coating is sprayed and tested in an artificial accelerated aging box for 2500-3000 hours, a paint film of the water-based acrylic acid graft modified polysiloxane coating is free from foaming, falling and rusty spots, the chalking is less than 1 grade, the light loss is less than 2 grades, and the color change is less than 2 grades.
The waterborne acrylic acid graft modified polysiloxane coating and the preparation method thereof select the waterborne acrylic acid graft modified polysiloxane resin as the main agent resin, wherein the polysiloxane has excellent light and color retention; the main absorption peak of the acrylic resin to light is outside the solar spectrum range, and the acrylic resin has excellent light resistance and outdoor aging resistance; the water-based acrylic acid graft modified polysiloxane resin is selected to realize the complementation of the performances of the two resins. Meanwhile, a curing agent containing epoxy groups and alkoxy groups is matched and selected, normal-temperature curing can be realized through the reaction between the epoxy groups and the carboxyl groups, and the alkoxy groups connected with Si atoms are easy to generate hydrolysis condensation reaction to form a Si-O-Si three-dimensional cross-linked structure, so that the prepared paint film has the advantages of enhanced adhesive force, improved water resistance and excellent weather resistance. Meanwhile, the hydrophilic bentonite is selected in the preparation process, so that the final product system is stable, safe and environment-friendly.
Detailed Description
Aqueous acrylic acid graft-modified polysiloxane resin: dear, polysiloxane content (calculated per solid) 30%;
pH adjuster (2-aminomethyl-1-propanol): prevailing chemical industry, containing 96% of solid;
wetting dispersant (modified polyacrylate high molecular polymer): effona, solid content 39%;
defoamer one (silicone defoamer): the solid content is 100 percent, and the polysiloxane hydrophobic particles are used in the chemical industry;
defoamer b (silicone defoamer): effkona, solid content 100%, aqueous defoamer based on organically modified polydimethylsiloxane structure;
anti-settling agent (hydrophilic bentonite): TITANOS, 3% water solution colloid viscosity is more than or equal to 2500 mPa.s
Rutile type titanium dioxide: kemu brand, titanium dioxide content 93%;
talc powder: haicheng Daifyang industries, Inc., Haicheng, with a particle size of 1000 mesh.
Diethylene glycol butyl ether: guangyuan International trade, boiling point 230.4 ℃.
The following dispersion, homodispersion, stirring and mixing are all performed by a high-speed disperser, namely: NETZSCH, power 5 ~ 75 HZ.
An artificial accelerated aging box manufacturer: Q-Lab, type: LU-0801.
The technical scheme of the invention is further explained by combining specific examples.
Examples 1 to 3
The preparation method of the water-based acrylic acid graft modified polysiloxane coating comprises the following steps:
step 1, preparation of a main agent: adding aqueous resin emulsion (adding aqueous resin emulsion for the first time), film forming auxiliary agent and deionized water, stirring for 5min at the speed of 800r/min by adopting a high-speed dispersion machine until the mixture is uniformly stirred, adding a pH regulator and a first defoaming agent, uniformly dispersing for 10min, slowly adding an anti-settling agent, dispersing for 10min at the speed of 1000r/min, then adding pigment and filler, and dispersing for 20min at the speed of 1800 r/min. And then adding the rest aqueous resin emulsion (adding the aqueous resin emulsion for the second time), stirring at the speed of 1500r/min for 10min until the mixture is uniformly mixed, adding a wetting dispersant and a second defoaming agent under the stirring of a high-speed dispersion machine, and dispersing at the speed of 1000r/min for 10 min.
Step 2, preparing paint according to the mass ratio of the main agent to the curing agent of 24:1, and then stirring the paint for 5min to be uniform at the speed of 1000r/min by using a high-speed dispersion machine.
In the preparation method, the aqueous resin emulsion is aqueous acrylic acid graft modified polysiloxane resin; the film-forming auxiliary agent is diethylene glycol butyl ether; the pH regulator is 2-aminomethyl-1-propanol; the first defoaming agent is an organic silicon defoaming agent, and is specifically adopted as force surpassing chemical 2224; the anti-settling agent is hydrophilic bentonite; the pigment is rutile type titanium dioxide; the filler is talcum powder with the particle size of 600 meshes; the wetting dispersant is a modified polyacrylate high molecular polymer, specifically AFCONA 4599; the defoaming agent II is an organic silicon defoaming agent, specifically AFCONA 2507; the curing agent is a water-based curing agent containing epoxy groups and alkoxy groups, and is specifically WATERSOL WSA-950 of Diegon.
TABLE 1
When the paint is used later, deionized water can be added to adjust the viscosity so as to facilitate spraying, and in the embodiment, the viscosity is adjusted to 20-30 s (measured by a paint-4 viscometer).
The adhesion, water resistance and weather resistance of the paint film of the waterborne acrylic graft modified polysiloxane paint prepared in the above example are shown in the following table 2, wherein the test standard of the adhesion of the paint film is GB/T9286; the water resistance test standard is GB/T1733-93; the weather resistance test standard is in accordance with GB/T1865.
TABLE 2
Therefore, the waterborne acrylic acid graft modified polysiloxane coating has excellent adhesion, water resistance and weather resistance.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. The water-based acrylic acid graft modified polysiloxane coating is characterized by comprising a main agent and a curing agent, wherein the ratio of the main agent to the curing agent is (23-25) in parts by mass: (1-2) wherein,
the main agent comprises 60-70 parts by mass of water-based resin emulsion, 15-20 parts by mass of pigment, 5-10 parts by mass of filler, 0.5-1.0 part by mass of anti-settling agent, 1.0-1.5 parts by mass of film forming additive, 0.1-0.2 part by mass of pH regulator, 2-4 parts by mass of deionized water, 0.05-0.10 part by mass of defoaming agent I, 0.5-1 part by mass of wetting dispersant and 0.1-0.6 part by mass of defoaming agent II, the water-based resin emulsion is water-based acrylic acid graft modified polysiloxane resin, the pigment is rutile titanium dioxide, the filler is talcum powder, the anti-settling agent is hydrophilic bentonite, the film-forming assistant is an alcohol ether solvent, the pH regulator is an alcamine neutralizer, the first defoaming agent and the second defoaming agent are silicon-containing defoaming agents, and the wetting dispersant is a modified polyacrylate high-molecular polymer;
the curing agent is a water-based curing agent containing epoxy groups and alkoxy groups.
2. The aqueous acrylic graft-modified polysiloxane coating material according to claim 1, wherein the curing agent is a curing agent for silicone acrylic resin.
3. The water-based acrylic graft modified polysiloxane coating material as claimed in claim 2, wherein the particle size of the talcum powder is 800-1200 meshes.
4. The aqueous acrylic graft modified polysiloxane coating of claim 3, characterized in that said alcoholamine based neutralizing agent is 2-aminomethyl-1-propanol.
5. The waterborne acrylic graft modified polysiloxane coating of claim 4, wherein the first defoamer is hydrophobic particles of polysiloxane.
6. The waterborne acrylic graft modified polysiloxane coating of claim 5, characterized in that the second defoamer is a waterborne defoamer based on an organically modified polydimethylsiloxane structure.
7. The method for preparing the water-based acrylic graft-modified polysiloxane coating according to any one of claims 1 to 6, which comprises the following steps:
step 1, preparing a main agent: adding a film forming auxiliary agent, deionized water and part of aqueous resin emulsion, stirring uniformly, adding a pH regulator and a first defoaming agent, uniformly dispersing for 10-30 min, adding an anti-settling agent, uniformly dispersing for 10-30 min, adding a pigment and a filler, uniformly dispersing for 10-30 min, adding the rest aqueous resin emulsion, uniformly mixing, adding a wetting dispersant and a second defoaming agent under the condition of stirring, and uniformly dispersing for 10-30 min, wherein the ratio of the first-time addition of the aqueous resin emulsion to the second-time addition of the aqueous resin emulsion is (25-30): (35-45);
and 2, uniformly mixing the main agent and the curing agent.
8. The use of the aqueous acrylic acid graft-modified polysiloxane coating according to any one of claims 1 to 7 for improving adhesion.
9. Use of the aqueous acrylic graft-modified polysiloxane coating according to any one of claims 1 to 7 for improving water resistance.
10. Use of the aqueous acrylic graft-modified polysiloxane coating according to any one of claims 1 to 7 for improving weather resistance.
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| CN201811467896.9A CN111253825B (en) | 2018-12-03 | 2018-12-03 | Water-based acrylic acid graft modified polysiloxane coating, preparation method and application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777910A (en) * | 2020-07-28 | 2020-10-16 | 天津中航百慕新材料技术有限公司 | Water-based graphite allyl acid-polysiloxane coating and preparation method thereof |
| CN112625597A (en) * | 2020-12-18 | 2021-04-09 | 锌盾化工无锡有限公司 | Water-based polysiloxane cold-spraying zinc coating and preparation method thereof |
| CN116082704A (en) * | 2023-01-31 | 2023-05-09 | 金发科技股份有限公司 | Colored weather-resistant polypropylene composition and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105017915A (en) * | 2015-08-03 | 2015-11-04 | 蓝星（成都）新材料有限公司 | A kind of exterior wall water-based paint |
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| CN105038468A (en) * | 2015-07-31 | 2015-11-11 | 南通德安化工有限公司 | Water-based corrosion-resistant ceramic paint |
| CN105017915A (en) * | 2015-08-03 | 2015-11-04 | 蓝星（成都）新材料有限公司 | A kind of exterior wall water-based paint |
| CN105017917A (en) * | 2015-08-03 | 2015-11-04 | 蓝星（成都）新材料有限公司 | High-weather-resistance waterborne coating |
| CN106752565A (en) * | 2016-11-28 | 2017-05-31 | 陈嘉 | The not heated aqueous coating of the solarization of environmental protection and energy saving |
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| CN111777910A (en) * | 2020-07-28 | 2020-10-16 | 天津中航百慕新材料技术有限公司 | Water-based graphite allyl acid-polysiloxane coating and preparation method thereof |
| CN112625597A (en) * | 2020-12-18 | 2021-04-09 | 锌盾化工无锡有限公司 | Water-based polysiloxane cold-spraying zinc coating and preparation method thereof |
| CN116082704A (en) * | 2023-01-31 | 2023-05-09 | 金发科技股份有限公司 | Colored weather-resistant polypropylene composition and preparation method thereof |
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| CN111253825B (en) | 2021-06-18 |
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Denomination of invention: Waterborne acrylic grafted modified polysiloxane coating, preparation method and application Effective date of registration: 20230105 Granted publication date: 20210618 Pledgee: Bank of Beijing Limited by Share Ltd. Tianjin branch Pledgor: Tianjin Zhonghang Baimu New Material Technology Co.,Ltd. Registration number: Y2023980030280 |
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