CN108102494B - Corrosion-resistant anti-fouling aluminum profile - Google Patents
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- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
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- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
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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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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- 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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- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2286—Oxides; Hydroxides of metals of silver
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Abstract
The invention discloses an anti-corrosion and anti-fouling aluminum profile, which relates to the technical field of aluminum profiles and comprises an aluminum profile substrate and an anti-corrosion and anti-fouling coating coated on the surface of the aluminum profile substrate; the corrosion-resistant anti-fouling coating comprises the following raw materials in parts by weight: 40-50 parts of modified acrylic resin, 20-30 parts of alkyd resin, 10-15 parts of polyamide, 6-10 parts of melamine copolymer resin, 4-8 parts of modified titanium dioxide nano particles, 5-10 parts of talcum powder, 2-5 parts of silane coupling agent, 1-3 parts of fumed silica, 1-3 parts of flatting agent, 1-3 parts of defoaming agent, 0.2-1 part of polyethylene wax, 0.5-2 parts of di (2-ethylhexyl) phthalate, 2-5 parts of n-butyl alcohol and 7-12 parts of dimethylbenzene. The modified titanium dioxide nano particles have good photocatalytic property, can catalyze and decompose organic dirt, and have good antibacterial effect.
Description
Technical Field
The invention relates to the technical field of aluminum profiles, in particular to an anti-corrosion and anti-fouling aluminum profile.
Background
Aluminum and aluminum alloy are one of the most widely used materials in nonferrous metals, and the aluminum alloy has a plurality of excellent properties such as low density, easy processing, low thermal expansion coefficient, high thermal conductivity, high specific stiffness and specific strength, and the like. The method is widely applied to daily production and life, and the fields of aviation, automobiles, high-speed rails, engine pistons, optical instruments, missile mosaic structures and the like.
However, with the further development of industrial production, higher requirements are made on the surface properties of the aluminum alloy. Coating the surface of aluminum alloy to enhance its corrosion, dirt and bacteria resistance is commonly used. The existing coating for the aluminum alloy has the problems of unstable coating binding force, poor anti-fouling and antibacterial effects and the like.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a corrosion-resistant and anti-fouling aluminum profile, which comprises an aluminum profile substrate and a corrosion-resistant and anti-fouling coating coated on the surface of the aluminum profile substrate, wherein the coating has excellent anti-fouling, sterilizing and corrosion-resistant properties, and has good adhesive force with the aluminum alloy substrate.
The invention provides a corrosion-resistant and stain-resistant aluminum profile which comprises the following raw materials in parts by weight: 40-50 parts of modified acrylic resin, 20-30 parts of alkyd resin, 10-15 parts of polyamide, 6-10 parts of melamine copolymer resin, 4-8 parts of modified titanium dioxide nano particles, 5-10 parts of talcum powder, 2-5 parts of silane coupling agent, 1-3 parts of fumed silica, 1-3 parts of flatting agent, 1-3 parts of defoaming agent, 0.2-1 part of polyethylene wax, 0.5-2 parts of di (2-ethylhexyl) phthalate, 2-5 parts of n-butyl alcohol and 7-12 parts of dimethylbenzene.
Preferably, the modified acrylic resin is an organic fluorine-silicon modified acrylic resin.
Preferably, the modified titanium dioxide nanoparticles are prepared as follows: adding tetrabutyl titanate and polyvinylpyrrolidone into absolute ethyl alcohol, and stirring for dissolving to obtain a solution A; dissolving silver nitrate in water, adding absolute ethyl alcohol, and stirring to obtain a solution B; slowly dropwise adding the solution B into the solution A, adjusting the pH value by adopting concentrated ammonia water, stirring in a water bath for reaction, centrifugally separating, washing, drying and crushing to obtain a solid C; dissolving gamma-aminopropyltriethoxysilane and ethyl orthosilicate in an ethanol water solution, adjusting the pH value with acetic acid, stirring and hydrolyzing to obtain a solution D, adding the solid C into the solution D, carrying out ultrasonic stirring reaction, carrying out centrifugal separation, washing with water, drying and crushing to obtain the modified titanium dioxide nanoparticles.
Preferably, the modified titanium dioxide nanoparticles are prepared as follows: adding 10 parts of n-butyl titanate and 3-4 parts of polyvinylpyrrolidone into 40-50 parts of absolute ethyl alcohol, and stirring for dissolving to obtain a solution A; dissolving 0.5-1 part of silver nitrate in 15-20 parts of water, adding 10-15 parts of absolute ethyl alcohol, and stirring to obtain a solution B; slowly dropwise adding the solution B into the solution A, adjusting the pH to 8.0-8.5 by adopting concentrated ammonia water, stirring and reacting for 5-7h in a water bath at 35-40 ℃, centrifugally separating, washing, drying and crushing to obtain a solid C; dissolving 1-2 parts of gamma-aminopropyltriethoxysilane and 1-2 parts of ethyl orthosilicate in 90-95% ethanol water solution, adjusting the pH to 4-5 with acetic acid, stirring and hydrolyzing for 1-2h to obtain solution D, adding solid C into the solution D, performing ultrasonic stirring reaction for 1-2h, performing centrifugal separation, washing with water, drying, and crushing to obtain the modified titanium dioxide nanoparticles.
Preferably, the preparation method of the corrosion-resistant anti-fouling coating comprises the following steps:
s1, mixing talcum powder and modified silicon dioxide nano particles, calcining and crushing to obtain a material A;
s2, adding a silane coupling agent into the material A, and grinding to obtain a material B;
s3, adding the modified acrylic resin, the alkyd resin and the melamine copolymer resin into the high-speed dispersing agent, uniformly mixing, adding polyamide, fumed silica, a flatting agent, a defoaming agent, polyethylene wax, di (2-ethylhexyl) phthalate, n-butyl alcohol and xylene, and uniformly mixing to obtain the modified acrylic resin.
Preferably, the calcination temperature in S1 is 600-800 ℃, and the calcination time is 2-4 h.
Has the advantages that: the modified acrylic resin is used as a main film forming substance, has good light resistance, weather resistance and corrosion resistance, and has lower surface energy and adhesive force and good antifouling property; the modified acrylic resin, alkyd resin, polyamide, melamine copolymer resin and other components act to form a network structure, the network structure is cured to form a film, the film is attached to the surface of the aluminum alloy profile, the adhesive force is good, and the corrosion resistance and the stain resistance are realized; the addition of the fumed silica can improve the weather resistance, scratch resistance and ageing resistance of the coating, and improve the bonding strength between the coating and the aluminum alloy substrate; the titanium dioxide nano particles have quantum size effect, small size effect, surface effect and the like, the mechanical property of the coating can be improved by adding the titanium dioxide nano particles into the coating, and the titanium dioxide nano particles and the talcum powder can form a micro-nano structure, so that the lotus effect can reduce the surface energy of the coating and improve the antifouling property of the coating; in the preparation process of the modified titanium dioxide, the titanium dioxide nanoparticles doped with the silver oxide nanoparticles are prepared by using n-butyl titanate, polyvinylpyrrolidone and silver nitrate as raw materials, the visible light catalytic performance and the bactericidal performance of the titanium dioxide can be enhanced, the common hydrolysate of gamma-aminopropyltriethoxysilane and ethyl orthosilicate is used for coating and modifying the titanium dioxide nanoparticles doped with the silver oxide, the surface energy of the titanium dioxide nanoparticles is reduced, the defect that the nanoparticles are easy to agglomerate is improved, the dispersibility of the titanium dioxide nanoparticles in the coating is improved, the modified titanium dioxide nanoparticles have good photocatalytic property, organic dirt can be catalytically decomposed, and the antibacterial effect is good, the modified titanium dioxide nano particles react with hydroxyl groups and other groups on the surface of the oxide on the aluminum alloy, so that the bonding strength of the coating and the aluminum alloy matrix is improved; the coating prepared by the invention has good adhesive force with an aluminum alloy base material, is not easy to peel, has an excellent self-cleaning function, is anti-fouling and bactericidal, has excellent corrosion resistance, and prolongs the service life of an aluminum alloy section.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
The invention provides a corrosion-resistant and stain-resistant aluminum profile, which comprises an aluminum profile substrate and a corrosion-resistant and stain-resistant coating coated on the surface of the aluminum profile substrate; the corrosion-resistant anti-fouling coating comprises the following raw materials in parts by weight: 40 parts of modified acrylic resin, 20 parts of alkyd resin, 10 parts of polyamide, 6 parts of melamine copolymer resin, 4 parts of modified titanium dioxide nano particles, 5 parts of talcum powder, 2 parts of silane coupling agent, 1 part of fumed silica, 1 part of flatting agent, 1 part of defoaming agent, 0.2 part of polyethylene wax, 0.5 part of di (2-ethylhexyl) phthalate, 2 parts of n-butyl alcohol and 7 parts of xylene.
The preparation method of the corrosion-resistant anti-fouling coating comprises the following steps:
s1, mixing talcum powder and modified silicon dioxide nano particles, calcining and crushing to obtain a material A;
s2, adding a silane coupling agent into the material A, and grinding to obtain a material B;
s3, adding the modified acrylic resin, the alkyd resin and the melamine copolymer resin into the high-speed dispersing agent, uniformly mixing, adding polyamide, fumed silica, a flatting agent, a defoaming agent, polyethylene wax, di (2-ethylhexyl) phthalate, n-butyl alcohol and xylene, and uniformly mixing to obtain the modified acrylic resin.
Example 2
The invention provides a corrosion-resistant and stain-resistant aluminum profile, which comprises an aluminum profile substrate and a corrosion-resistant and stain-resistant coating coated on the surface of the aluminum profile substrate; the corrosion-resistant anti-fouling coating comprises the following raw materials in parts by weight: 45 parts of organic fluorine-silicon modified acrylic resin, 25 parts of alkyd resin, 12 parts of polyamide, 8 parts of melamine copolymer resin, 6 parts of modified titanium dioxide nano particles, 8 parts of talcum powder, 4 parts of silane coupling agent, 1.5 parts of fumed silica, 1.5 parts of flatting agent, 1.5 parts of defoaming agent, 0.5 part of polyethylene wax, 1 part of di (2-ethylhexyl) phthalate, 3 parts of n-butyl alcohol and 10 parts of dimethylbenzene.
The preparation method of the modified titanium dioxide nano particle comprises the following steps: adding 10 parts of n-butyl titanate and 3 parts of polyvinylpyrrolidone into 40 parts of absolute ethyl alcohol, and stirring for dissolving to obtain a solution A; dissolving 0.5 part of silver nitrate in 15 parts of water, adding 10 parts of absolute ethyl alcohol, and stirring to obtain a solution B; slowly dropwise adding the solution B into the solution A, adjusting the pH to 8.0 by adopting concentrated ammonia water, stirring and reacting for 5 hours in a water bath at 35 ℃, centrifugally separating, washing, drying and crushing to obtain a solid C; dissolving 1 part of gamma-aminopropyltriethoxysilane and 1 part of ethyl orthosilicate in 5 parts of 90% ethanol aqueous solution, adjusting the pH to 4 by using acetic acid, stirring and hydrolyzing for 1h to obtain a solution D, adding the solid C into the solution D, performing ultrasonic stirring reaction for 1h, performing centrifugal separation, washing with water, drying and crushing to obtain the modified titanium dioxide nanoparticles.
The preparation method of the corrosion-resistant anti-fouling coating comprises the following steps:
s1, mixing talcum powder and modified silicon dioxide nano particles, calcining for 2 hours at 600 ℃, and crushing to obtain a material A;
s2, adding a silane coupling agent into the material A, and grinding to obtain a material B;
s3, adding the modified acrylic resin, the alkyd resin and the melamine copolymer resin into the high-speed dispersing agent, uniformly mixing, adding polyamide, fumed silica, a flatting agent, a defoaming agent, polyethylene wax, di (2-ethylhexyl) phthalate, n-butyl alcohol and xylene, and uniformly mixing to obtain the modified acrylic resin.
Example 3
The invention provides a corrosion-resistant and stain-resistant aluminum profile, which comprises an aluminum profile substrate and a corrosion-resistant and stain-resistant coating coated on the surface of the aluminum profile substrate; the corrosion-resistant anti-fouling coating comprises the following raw materials in parts by weight: 48 parts of organic fluorine-silicon modified acrylic resin, 26 parts of alkyd resin, 13 parts of polyamide, 8 parts of melamine copolymer resin, 7 parts of modified titanium dioxide nano particles, 7 parts of talcum powder, 4 parts of silane coupling agent, 2 parts of fumed silica, 2 parts of flatting agent, 1.5 parts of defoaming agent, 0.5 part of polyethylene wax, 1 part of di (2-ethylhexyl) phthalate, 4 parts of n-butyl alcohol and 11 parts of xylene.
The preparation method of the modified titanium dioxide nano particle comprises the following steps: adding 10 parts of n-butyl titanate and 3.5 parts of polyvinylpyrrolidone into 48 parts of absolute ethyl alcohol, and stirring for dissolving to obtain a solution A; dissolving 0.8 part of silver nitrate in 18 parts of water, adding 14 parts of absolute ethyl alcohol, and stirring to obtain a solution B; slowly dropwise adding the solution B into the solution A, adjusting the pH to 8.5 by adopting concentrated ammonia water, stirring and reacting for 6 hours in a water bath at 40 ℃, centrifugally separating, washing, drying and crushing to obtain a solid C; dissolving 1.5 parts of gamma-aminopropyltriethoxysilane and 1 part of ethyl orthosilicate in 6 parts of 90% ethanol water solution, adjusting the pH to 5 with acetic acid, stirring and hydrolyzing for 1.5h to obtain a solution D, adding the solid C into the solution D, carrying out ultrasonic stirring reaction for 1.5h, carrying out centrifugal separation, washing with water, drying and crushing to obtain the modified titanium dioxide nanoparticles.
The preparation method of the corrosion-resistant anti-fouling coating comprises the following steps:
s1, mixing talcum powder and modified silicon dioxide nano particles, calcining for 3 hours at 700 ℃, and crushing to obtain a material A;
s2, adding a silane coupling agent into the material A, and grinding to obtain a material B;
s3, adding the modified acrylic resin, the alkyd resin and the melamine copolymer resin into the high-speed dispersing agent, uniformly mixing, adding polyamide, fumed silica, a flatting agent, a defoaming agent, polyethylene wax, di (2-ethylhexyl) phthalate, n-butyl alcohol and xylene, and uniformly mixing to obtain the modified acrylic resin.
Example 4
The invention provides a corrosion-resistant and stain-resistant aluminum profile, which comprises an aluminum profile substrate and a corrosion-resistant and stain-resistant coating coated on the surface of the aluminum profile substrate; the corrosion-resistant anti-fouling coating comprises the following raw materials in parts by weight: 50 parts of organic fluorine-silicon modified acrylic resin, 30 parts of alkyd resin, 15 parts of polyamide, 10 parts of melamine copolymer resin, 8 parts of modified titanium dioxide nano particles, 10 parts of talcum powder, 5 parts of silane coupling agent, 3 parts of fumed silica, 3 parts of flatting agent, 3 parts of defoaming agent, 1 part of polyethylene wax, 2 parts of di (2-ethylhexyl) phthalate, 5 parts of n-butyl alcohol and 12 parts of dimethylbenzene.
The preparation method of the modified titanium dioxide nano particle comprises the following steps: adding 10 parts of n-butyl titanate and 4 parts of polyvinylpyrrolidone into 50 parts of absolute ethyl alcohol, and stirring for dissolving to obtain a solution A; dissolving 1 part of silver nitrate in 20 parts of water, adding 15 parts of absolute ethyl alcohol, and stirring to obtain a solution B; slowly dropwise adding the solution B into the solution A, adjusting the pH to 8.5 by adopting concentrated ammonia water, stirring and reacting for 7 hours in a water bath at the temperature of 40 ℃, centrifugally separating, washing, drying and crushing to obtain a solid C; dissolving 2 parts of gamma-aminopropyltriethoxysilane and 2 parts of ethyl orthosilicate in 7 parts of 95% ethanol water solution, adjusting the pH to 5 with acetic acid, stirring and hydrolyzing for 2 hours to obtain a solution D, adding the solid C into the solution D, performing ultrasonic stirring reaction for 2 hours, performing centrifugal separation, washing with water, drying, and crushing to obtain the modified titanium dioxide nanoparticles.
The preparation method of the corrosion-resistant anti-fouling coating comprises the following steps:
s1, mixing talcum powder and modified silicon dioxide nano particles, calcining for 4 hours at 800 ℃, and crushing to obtain a material A;
s2, adding a silane coupling agent into the material A, and grinding to obtain a material B;
s3, adding the modified acrylic resin, the alkyd resin and the melamine copolymer resin into the high-speed dispersing agent, uniformly mixing, adding polyamide, fumed silica, a flatting agent, a defoaming agent, polyethylene wax, di (2-ethylhexyl) phthalate, n-butyl alcohol and xylene, and uniformly mixing to obtain the modified acrylic resin.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. The corrosion-resistant and anti-fouling aluminum profile is characterized by comprising an aluminum profile substrate and a corrosion-resistant and anti-fouling coating coated on the surface of the aluminum profile substrate; the corrosion-resistant anti-fouling coating comprises the following raw materials in parts by weight: 40-50 parts of modified acrylic resin, 20-30 parts of alkyd resin, 10-15 parts of polyamide, 6-10 parts of melamine copolymer resin, 4-8 parts of modified titanium dioxide nano particles, 5-10 parts of talcum powder, 2-5 parts of silane coupling agent, 1-3 parts of fumed silica, 1-3 parts of flatting agent, 1-3 parts of defoaming agent, 0.2-1 part of polyethylene wax, 0.5-2 parts of di (2-ethylhexyl) phthalate, 2-5 parts of n-butyl alcohol and 7-12 parts of xylene;
wherein, the preparation of the modified titanium dioxide nano particles is as follows: adding tetrabutyl titanate and polyvinylpyrrolidone into absolute ethyl alcohol, and stirring for dissolving to obtain a solution A; dissolving silver nitrate in water, adding absolute ethyl alcohol, and stirring to obtain a solution B; slowly dropwise adding the solution B into the solution A, adjusting the pH value by adopting concentrated ammonia water, stirring in a water bath for reaction, centrifugally separating, washing, drying and crushing to obtain a solid C; dissolving gamma-aminopropyltriethoxysilane and ethyl orthosilicate in an ethanol water solution, adjusting the pH value with acetic acid, stirring and hydrolyzing to obtain a solution D, adding the solid C into the solution D, carrying out ultrasonic stirring reaction, carrying out centrifugal separation, washing with water, drying and crushing to obtain the modified titanium dioxide nanoparticles.
2. The corrosion-resistant and stain-resistant aluminum profile according to claim 1, wherein the modified acrylic resin is an organic fluorine-silicon modified acrylic resin.
3. The corrosion-resistant and stain-resistant aluminum profile according to claim 1, wherein the modified titanium dioxide nanoparticles are prepared as follows: adding 10 parts of n-butyl titanate and 3-4 parts of polyvinylpyrrolidone into 40-50 parts of absolute ethyl alcohol, and stirring for dissolving to obtain a solution A; dissolving 0.5-1 part of silver nitrate in 15-20 parts of water, adding 10-15 parts of absolute ethyl alcohol, and stirring to obtain a solution B; slowly dropwise adding the solution B into the solution A, adjusting the pH to 8.0-8.5 by adopting concentrated ammonia water, stirring and reacting for 5-7h in a water bath at 35-40 ℃, centrifugally separating, washing, drying and crushing to obtain a solid C; dissolving 1-2 parts of gamma-aminopropyltriethoxysilane and 1-2 parts of ethyl orthosilicate in 90-95% ethanol water solution, adjusting the pH to 4-5 with acetic acid, stirring and hydrolyzing for 1-2h to obtain solution D, adding solid C into the solution D, performing ultrasonic stirring reaction for 1-2h, performing centrifugal separation, washing with water, drying, and crushing to obtain the modified titanium dioxide nanoparticles.
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| CN105925123A (en) * | 2016-07-12 | 2016-09-07 | 梁方英 | Aluminum alloy door and window protection coating layer material used for smart homes |
| CN106867327A (en) * | 2016-12-22 | 2017-06-20 | 安徽易有墙纸有限公司 | A kind of resistant oil resistant wallpaper and preparation method thereof |
| CN107057498A (en) * | 2017-05-19 | 2017-08-18 | 深圳市永盛辉实业有限公司 | A kind of high coverage rate coating |
| CN107236356A (en) * | 2017-07-19 | 2017-10-10 | 太仓市鑫鹤印刷包装有限公司 | A kind of environment-friendly water-based printing-ink |
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