CN111909616A - Water-based polysiloxane porcelain-like coating - Google Patents
Water-based polysiloxane porcelain-like coating Download PDFInfo
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- 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
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- 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
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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Abstract
The invention relates to the technical field of coatings, and particularly relates to a water-based polysiloxane ceramic simulating coating. The water-based polysiloxane porcelain-imitating coating comprises a component A, a component B and a component C, wherein the component A comprises water-based nano sol, filler, pigment, anti-sagging agent, flatting agent and dispersing agent, the component B is a catalyst, the component C is a silane coupling agent, and the mass ratio of the component A to the component B to the component C is 10: (1-10): (0.1-5). The water-based polysiloxane ceramic simulating coating provided by the invention has the advantages of good stability before curing, simple curing process, short curing time, normal-temperature spraying, long shelf life after curing, cold and heat cycle resistance, high hardness, corrosion resistance and the like, and can meet the requirement of long-term use of various metal substrates in a complex and variable environment.
Description
Technical Field
The invention relates to the technical field of coatings, and particularly relates to a water-based polysiloxane ceramic simulating coating.
Background
The paint is a continuous film which is coated on the surface of a protected or decorated object and can form firm adhesion with the object to be coated, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding pigment, filler and corresponding auxiliary agents and using an organic solvent or sodium alkyl benzene sulfonate. The porcelain-like coating is a building coating with a decorative effect exactly similar to an enamel veneer, can be used for painting and spraying on solid surfaces such as metal, plastic, cement land, wood and the like, and is widely used for spraying decoration of public building inner walls, house inner walls, kitchens and bathroom rooms, anticorrosion of exterior decoration of electric appliances, machinery and furniture and other fields.
In recent years, the ceramic simulating coating on the market has various varieties, and the water-based polysiloxane ceramic simulating coating has more and more extensive application due to the unique properties of high temperature resistance, wear resistance, low surface energy, no toxicity, chemical resistance, high hardness, strong adhesive force and the like. The water polysiloxane porcelain-imitating paint is prepared with inorganic sol and water polysiloxane resin as main filming material, water or other solvent as dispersing medium, pigment, stuffing, assistant, etc. and through mixing, dispersing, grinding and other technological steps. However, the conventional water-based polysiloxane ceramic simulating coating has the defects of poor stability, long curing time, short storage time after curing and the like, the viscosity of the coating is low after curing, the sagging phenomenon is easy to occur, and the coating is generally sprayed after a substrate is heated to 40-60 ℃ when in use, so that the high-efficiency and large-scale application and development of the water-based polysiloxane ceramic simulating coating are limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the water-based polysiloxane porcelain imitating coating which has good stability, short curing time, normal-temperature spraying resistance and cold-hot circulation resistance.
The technical scheme of the invention is realized by the following method:
a water-based polysiloxane porcelain-imitating coating consists of a component A, a component B and a component C, wherein the component A consists of water-based nano sol, filler, pigment, an anti-sagging agent, a flatting agent and a dispersing agent, the component B is a catalyst, and the component C is a silane coupling agent; the mass ratio of the component A to the component B to the component C is 10: (1-10): (0.1-5).
Further, the component A comprises, by weight, 50-90 parts of aqueous nano sol, 10-50 parts of filler, 1-20 parts of pigment, 0.1-10 parts of anti-sagging agent, 0.01-0.5 part of flatting agent and 0.01-0.5 part of dispersing agent.
Further, the aqueous nano sol comprises one or more of silica hydrosol, alumina hydrosol, titania hydrosol, zirconia hydrosol and graphene oxide, the particle size of the aqueous nano sol is 10-90 nanometers, and the solid content of the aqueous nano sol is 30% -50%.
Furthermore, the filler is one or more of mica powder, talcum powder, barium sulfate, wollastonite, calcium carbonate, glass fiber, hollow glass microsphere and alumina fiber.
Furthermore, the anti-sagging agent adopts one or more of hydrophilic nano silicon dioxide, nano potassium aluminum silicate, bentonite and cellulose.
Further, the dispersing agent adopts polyether modified polysiloxane.
Furthermore, the flatting agent is one or more of acrylic flatting agents, polyurethane flatting agents and polysiloxane flatting agents.
Further, the catalyst is composed of one or more of formic acid, acetic acid, hydrochloric acid, sulfuric acid, phosphoric acid and oxalic acid according to a mixed solution or an aqueous solution of the mixed solution of the formic acid, the acetic acid, the hydrochloric acid, the sulfuric acid, the phosphoric acid and the oxalic acid in any proportion.
Further, the silane coupling agent adopts one or more of methyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, methylphenyldimethoxysilane, methyltriethoxysilane, tetraethoxysilane, gamma-aminopropyltriethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
The invention has the beneficial effects that:
the silane coupling agent in the water-based polysiloxane porcelain-imitating coating is hydrolyzed to form silanol, the silanol is dehydrated and condensed to form oligosiloxane, Si-OH groups in the oligosiloxane can perform auto-polymerization reaction to form firm Si-O-Si bonds, and then a polysiloxane coating film with a space net structure is formed; and Si-OH groups generated by hydrolysis of the silane coupling agent can perform condensation reaction with-OH groups on the surface of the aqueous nano sol, organic groups are grafted on the surface of the sol, the bonding effect is utilized to improve the connection strength between inorganic matters and organic matters, and the problem that a coating film is cracked and even falls off in a large area can be avoided. The water-based polysiloxane ceramic simulating coating provided by the invention has the advantages of good stability before curing, short curing time, simple curing process, long shelf life after curing, normal-temperature spraying resistance, cold and heat cycle resistance, high hardness, strong adhesive force, corrosion resistance and the like, can meet the long-term use requirement of various metal substrates in complicated and variable environments, solves the problems of poor stability, long curing time, short storage time after curing and incapability of normal-temperature spraying existing in the water-based polysiloxane ceramic simulating coating at the present stage, can effectively improve the application range and the operation efficiency of the water-based polysiloxane ceramic simulating coating, and is a green and environment-friendly high-performance water-based coating.
Detailed Description
The invention provides a water-based polysiloxane porcelain-imitating coating which consists of a component A, a component B and a component C, wherein the mass ratio of the component A to the component B to the component C is 10: (1-10): (0.1-5), wherein the component A comprises 50-90 parts by weight of aqueous nano sol, 10-50 parts by weight of filler, 1-20 parts by weight of pigment, 0.1-10 parts by weight of anti-sagging agent, 0.01-0.5 part by weight of flatting agent and 0.01-0.5 part by weight of dispersant, the component B is a catalyst, and the component C is a silane coupling agent.
The aqueous nano sol in the component A comprises one or more of silica hydrosol, alumina hydrosol, titania hydrosol, zirconia hydrosol and graphene oxide, the particle size of the aqueous nano sol is 10-90 nanometers, and the solid content is 30-50%. The filler is one or more of mica powder, talcum powder, barium sulfate, wollastonite, calcium carbonate, glass fiber, hollow glass microsphere and alumina fiber. The anti-sagging agent adopts one or more of hydrophilic nano silicon dioxide, nano potassium aluminum silicate, bentonite and cellulose. The dispersing agent adopts polyether modified polysiloxane. The leveling agent is one or more of acrylic acids, polyurethanes and polysiloxane leveling agents, and polyether modified polysiloxane leveling agents are preferred.
The component B catalyst is one or several of formic acid, acetic acid, hydrochloric acid, sulfuric acid, phosphoric acid and oxalic acid in any proportion and in the form of mixed solution or its water solution.
The component C silane coupling agent adopts one or more of methyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, methylphenyldimethoxysilane, methyltriethoxysilane, tetraethoxysilane, gamma-aminopropyltriethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
The preparation method of the water-based polysiloxane porcelain-imitating coating comprises the following steps:
(1) and mixing and stirring the substances in the component A uniformly, grinding and filtering to obtain colloid with the particle size of less than 20 microns for later use.
(2) Mixing and grinding the component A to obtain a colloid, a component B and a component C, wherein the colloid, the component B and the component C are mixed according to a mass ratio of 10: (1-10): (0.1-5), uniformly stirring, and carrying out ultrasonic treatment for 5 minutes to obtain a finished product of the water-based polysiloxane ceramic simulating coating.
Example 1:
the water-based polysiloxane porcelain-imitating coating consists of a component A, a component B and a component C, wherein the content of each component is as follows:
the component A comprises: 60g of silica hydrosol (solid content is 30%), 20g of talcum powder, 15g of copper chromium black, 2g of carbon black, 1g of hydrophilic nano silicon dioxide, 1g of nano potassium aluminum silicate, 0.5g of BYK110 dispersing agent and 0.5g of BYK333 leveling agent.
And B component: glacial acetic acid 10 g.
And C, component C: 20g of methyltrimethoxysilane.
And mixing and stirring the substances in the component A uniformly, grinding and filtering to obtain colloid with the particle size of 10-20 microns for later use. And mixing and grinding the component A to obtain a colloid, and mixing the component B and the component C according to a mass ratio of 10: 1: 2, and carrying out ultrasonic treatment for 5 minutes to obtain the finished product of the water-based polysiloxane ceramic simulating coating.
Example 2:
the water-based polysiloxane porcelain-imitating coating consists of a component A, a component B and a component C, wherein the content of each component is as follows:
the component A comprises: 70g of titanium oxide hydrosol (the solid content is 30%), 10g of calcium carbonate, 15g of titanium dioxide, 2g of cellulose, 2.8g of bentonite, 0.1g of BYK110 dispersing agent and 0.1g of BYK333 leveling agent.
And B component: aqueous hydrochloric acid solution 20g (concentration 1%).
And C, component C: 30g of dimethyldimethoxysilane and 20g of methyltriethoxysilane.
And mixing and stirring the substances in the component A uniformly, grinding and filtering to obtain colloid with the particle size of 10-20 microns for later use. And mixing and grinding the component A to obtain a colloid, and mixing the component B and the component C according to a mass ratio of 10: 2: 5, uniformly mixing and stirring the mixture, and carrying out ultrasonic treatment for 5 minutes to obtain a finished product of the water-based polysiloxane ceramic simulating coating.
Example 3:
the water-based polysiloxane porcelain-imitating coating consists of a component A, a component B and a component C, wherein the content of each component is as follows:
the component A comprises: 85g of silica hydrosol (solid content is 30%), 10g of wollastonite, 2g of chromium oxide green, 2.8g of hydrophilic nano silicon dioxide, 0.1g of BYK-P104S dispersing agent and 0.1g of BYK333 leveling agent.
And B component: 50g of oxalic acid.
And C, component C: 30g of methyltrimethoxysilane.
And mixing and stirring the substances in the component A uniformly, grinding and filtering to obtain colloid with the particle size of 10-20 microns for later use. And mixing and grinding the component A to obtain a colloid, and mixing the component B and the component C according to a mass ratio of 10: 5: 3, and performing ultrasonic treatment for 5 minutes to obtain the finished product of the water-based polysiloxane ceramic simulating coating.
Example 4:
the water-based polysiloxane porcelain-imitating coating consists of a component A, a component B and a component C, wherein the content of each component is as follows:
the component A comprises: 50g of graphene oxide (solid content is 30%), 20g of talcum powder, 10g of wollastonite, 15g of carbon black, 2.5g of hydrophilic nano silica, 2g of cellulose, 0.2g of BYK-P104S dispersing agent and 0.3g of BYK333 leveling agent.
And B component: glacial acetic acid 10 g.
And C, component C: 1g of gamma-aminopropyltriethoxysilane.
And mixing and stirring the substances in the component A uniformly, grinding and filtering to obtain colloid with the particle size of 10-20 microns for later use. And mixing and grinding the component A to obtain a colloid, and mixing the component B and the component C according to a mass ratio of 10: 1: mixing the components according to the proportion of 0.1, and carrying out ultrasonic treatment for 5 minutes to obtain a finished product of the water-based polysiloxane ceramic simulating coating.
Example 5:
the water-based polysiloxane porcelain-imitating coating consists of a component A, a component B and a component C, wherein the content of each component is as follows:
the component A comprises: 40g of silica hydrosol (solid content is 50%), 40g of alumina hydrosol (solid content is 50%), 10g of mica powder, 4g of titanium dioxide, 2g of nano-scale potassium aluminum silicate, 3g of bentonite, 0.5g of BYK110 dispersant and 0.5g of BYK333 leveling agent.
And B component: oxalic acid 40g and phosphoric acid 60 g.
And C, component C: 10g of ethyl orthosilicate and 15g of gamma-glycidoxypropyltrimethoxysilane.
And mixing and stirring the substances in the component A uniformly, grinding and filtering to obtain colloid with the particle size of 10-20 microns for later use. And mixing and grinding the component A to obtain a colloid, and mixing the component B and the component C according to a mass ratio of 10: 10: 2.5, and carrying out ultrasonic treatment for 5 minutes to obtain the finished product of the water-based polysiloxane ceramic simulating coating.
Comparative example 1:
the conventional performances of a certain conventional water-based polysiloxane imitation ceramic paint on the market are compared with the conventional performances of the finished water-based polysiloxane imitation ceramic paint prepared in the embodiments 1-5 of the invention, and are shown in Table 1.
TABLE 1 comparison of conventional properties of coatings
As can be seen from the data in Table 1, compared with the conventional water-based polysiloxane coating which is commercially available, the water-based polysiloxane ceramic simulating coating has the advantages of short curing time and normal-temperature spraying, and the cold and heat cycle resistance is obviously improved compared with the conventional coating on the market.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The water-based polysiloxane ceramic simulating coating is characterized by consisting of a component A, a component B and a component C, wherein the component A consists of water-based nano sol, filler, pigment, anti-sagging agent, flatting agent and dispersing agent, the component B is a catalyst, and the component C is a silane coupling agent; the mass ratio of the component A to the component B to the component C is 10: (1-10): (0.1-5).
2. The water-based polysiloxane porcelain-imitating coating according to claim 1, wherein the component A comprises, by weight, 50 to 90 parts of the aqueous nanosol, 10 to 50 parts of the filler, 1 to 20 parts of the pigment, 0.1 to 10 parts of the anti-sagging agent, 0.01 to 0.5 part of the leveling agent, and 0.01 to 0.5 part of the dispersant.
3. The water-based polysiloxane porcelain-imitating coating according to claim 2, wherein the water-based nano sol comprises one or more of silica hydrosol, alumina hydrosol, titania hydrosol, zirconia hydrosol and graphene oxide, the particle size of the water-based nano sol is 10-90 nm, and the solid content of the water-based nano sol is 30-50%.
4. The water-based polysiloxane ceramic simulating coating of claim 2, wherein the filler is one or more of mica powder, talcum powder, barium sulfate, wollastonite, calcium carbonate, glass fiber, hollow glass microsphere and alumina fiber.
5. The water-based polysiloxane porcelain-imitating coating according to claim 2, wherein the anti-sagging agent is one or more of hydrophilic nano-silica, nano-scale potassium aluminum silicate, bentonite and cellulose.
6. The water-based polysiloxane porcelain-imitating coating according to claim 2, wherein the dispersant is polyether-modified polysiloxane.
7. The water-based polysiloxane porcelain-imitating coating according to claim 2, wherein the leveling agent is one or more of acrylic, polyurethane and polysiloxane leveling agents.
8. The water-based polysiloxane porcelain imitating coating according to claim 1, wherein the catalyst is one or more of formic acid, acetic acid, hydrochloric acid, sulfuric acid, phosphoric acid and oxalic acid in any proportion or in any mixture thereof.
9. The water-based polysiloxane ceramic simulating coating according to claim 1, wherein the silane coupling agent is one or more of methyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, methylphenyldimethoxysilane, methyltriethoxysilane, tetraethoxysilane, gamma-aminopropyltriethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
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| CN202010915776.1A Pending CN111909616A (en) | 2020-09-03 | 2020-09-03 | Water-based polysiloxane porcelain-like coating |
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| CN112795210A (en) * | 2020-12-21 | 2021-05-14 | 浙江和美集成新材料科技有限公司 | Ceramic wood for furniture and manufacturing process thereof |
| CN114381151A (en) * | 2022-01-24 | 2022-04-22 | 浙江国宏天釉新材料有限公司 | Ceramic coating and preparation method thereof |
| CN115260899A (en) * | 2022-07-28 | 2022-11-01 | 广东美的白色家电技术创新中心有限公司 | Hydrophobic coating and preparation method and application thereof |
| CN115948115A (en) * | 2022-12-26 | 2023-04-11 | 慧智科技湖北有限公司 | Glaze-like high-temperature-resistant glass coating and preparation method thereof |
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| CN115948115B (en) * | 2022-12-26 | 2024-01-30 | 慧智科技湖北有限公司 | Glaze-like high-temperature-resistant glass paint and preparation method thereof |
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Application publication date: 20201110 |