CN112920661A - High-temperature-resistant anti-drop powder coating - Google Patents
High-temperature-resistant anti-drop powder coating Download PDFInfo
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- CN112920661A CN112920661A CN202110118507.7A CN202110118507A CN112920661A CN 112920661 A CN112920661 A CN 112920661A CN 202110118507 A CN202110118507 A CN 202110118507A CN 112920661 A CN112920661 A CN 112920661A
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- 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
- C09D133/00—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 at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- 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
- C09D127/00—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 at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—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 at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—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 at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- 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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
- C09D201/02—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C09D201/025—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing nitrogen atoms
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- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- 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
- C09D5/18—Fireproof paints including high temperature resistant paints
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Abstract
The invention relates to a high-temperature-resistant anti-falling powder coating. The powder coating is formed by mixing a flame-retardant high-temperature-resistant material and a high-temperature-resistant antioxidant material, wherein the flame-retardant high-temperature-resistant material comprises thermosetting flame-retardant high-temperature-resistant modified resin, the content of the flame-retardant high-temperature-resistant material is 80-90 parts by weight, the content of the high-temperature-resistant antioxidant material is 10-20 parts by weight, the thermosetting flame-retardant high-temperature-resistant modified resin accounts for 75-85% of the flame-retardant high-temperature-resistant material by weight, the powder coating is formed by mixing the flame-retardant high-temperature-resistant material and the high-temperature-resistant antioxidant material, has the effects of high temperature resistance: the powder coating can resist the temperature up to 700 ℃ and can be soaked in a dilute sulfuric acid solution with the temperature of 80 ℃ and the concentration of 35% for 240 hours without the phenomena of pulverization, bubbling, cracking, falling off and the like.
Description
Technical Field
The invention belongs to the technical field of powder coatings, and particularly relates to a high-temperature-resistant anti-falling powder coating.
Background
The patent with the application number of CN201710707145.9, the application date of 20170817, the application publication number of CN109535947A and the application publication number of 20190329 discloses a heat dissipation powder coating and a preparation method thereof in the existing Chinese patent database. Comprises the following components in parts by weight: 30-80 parts of resin, 0-10 parts of curing agent, 0-20 parts of brightening agent, 0.5-1 part of flatting agent, 0.6-1 part of degassing agent, 10-30 parts of modified filler and 2-5 parts of pigment. The powder coating has good heat dissipation effect, has the cooling effect of more than 10 ℃, can effectively solve the problem of poor heat dissipation effect of high-frequency high-power electronic products, prolongs the service life of the electronic products, and has the following disadvantages: although the powder coating has a good heat dissipation effect, the powder coating falls off when the ambient temperature is too high, so that the coating is corroded, and the powder coating has certain limitations.
Disclosure of Invention
The invention aims to solve the technical problem that the existing powder coating falls off when the environmental temperature is too high, so that the coating is corroded, and in order to overcome the defects, the invention provides the high-temperature-resistant falling-off-preventing powder coating.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the high-temperature-resistant anti-drop powder coating is formed by mixing a flame-retardant high-temperature-resistant material and a high-temperature-resistant antioxidant material, wherein the flame-retardant high-temperature-resistant material comprises 80-90 parts by weight of thermosetting flame-retardant high-temperature-resistant modified resin, 10-20 parts by weight of high-temperature-resistant antioxidant material, and the thermosetting flame-retardant high-temperature-resistant modified resin accounts for 75-85% of the flame-retardant high-temperature-resistant material by weight.
Further, the thermosetting flame-retardant high-temperature-resistant modified resin comprises nitrile-based resin and phenolic resin.
Further, the flame-retardant high-temperature-resistant material comprises one or more of acrylic resin, vinyl resin, unsaturated polyester resin and epoxy resin.
Further, the high-temperature-resistant and oxidation-resistant material comprises one or more of low-melting-point glass powder, polytetrafluoroethylene and silicide.
Further, the high-temperature-resistant anti-oxidation material also comprises ceramic powder.
Further, the particle size of the low-melting-point glass powder is 7-8 μm.
Compared with the prior art, the invention has the beneficial effects that: the powder coating is formed by mixing a flame-retardant high-temperature-resistant material and a high-temperature-resistant anti-oxidation material, has the functions of high temperature resistance and corrosion resistance, and has the following properties: the powder coating can resist the temperature up to 700 ℃ and can be soaked in a dilute sulfuric acid solution with the temperature of 80 ℃ and the concentration of 35% for 240 hours without the phenomena of pulverization, bubbling, cracking, falling off and the like.
Detailed Description
The technical solution of the present application is further described below.
The high-temperature-resistant anti-drop powder coating is formed by mixing a flame-retardant high-temperature-resistant material and a high-temperature-resistant antioxidant material, wherein the flame-retardant high-temperature-resistant material comprises 80-90 parts by weight of thermosetting flame-retardant high-temperature-resistant modified resin, 10-20 parts by weight of high-temperature-resistant antioxidant material, and the thermosetting flame-retardant high-temperature-resistant modified resin accounts for 75-85% of the flame-retardant high-temperature-resistant material by weight. Placing fire-retardant high temperature resistant material and high temperature resistant anti-oxidant material in air stirring reation kettle and mixing in this scheme, fire-retardant high temperature resistant material content and high temperature resistant anti-oxidant material content proportion are 8: 1, and the high temperature resistant anti-drop powder coating performance of final mixing is better under this proportion, and mixing time sets up about 40min, through stirring constantly, makes in the air stirring reation kettle get the temperature even, improves the degree of consistency of mixing.
In order to further improve the high temperature resistance of the high temperature resistant anti-shedding powder coating, the thermosetting flame-retardant high temperature resistant modified resin comprises nitrile resin and phenolic resin.
The nitrile resin and the composite material thereof have the characteristics of high strength, high modulus, high temperature resistance, corrosion resistance, self-flame retardance and the like, no micromolecule release exists in the curing process, the porosity of a product is low and is close to zero shrinkage, and the nitrile resin also has the characteristics of low thermal expansion coefficient, stable size, low water absorption and the like, the glass transition temperature can reach more than 450 ℃ after complete curing, meanwhile, the nitrile resin has strong molecular designability, different monomers can be selected according to different purposes to introduce groups with different functional structures, and the requirements of different use occasions are met.
In order to further improve the flame retardance and the corrosion resistance of the high-temperature-resistant anti-shedding powder coating, the flame-retardant high-temperature-resistant material comprises one or more of acrylic resin, vinyl resin, unsaturated polyester resin and epoxy resin.
The acrylic resin coating is a thermoplastic or thermosetting resin coating or acrylic radiation coating prepared by copolymerizing (methyl) acrylic ester and styrene serving as main bodies with other acrylic ester to obtain acrylic resin, wherein the thermoplastic acrylic resin is not further crosslinked in the film forming process, so that the thermoplastic acrylic resin has large relative molecular weight, good light and color retention, water and chemical resistance, quick drying, convenient construction and easy construction recoating and reworking, and the whiteness and the positioning of aluminum powder are good when the aluminum powder paint is prepared, and the thermoplastic acrylic resin is a thermoplastic resin prepared by polymerizing acrylic acid, methacrylic acid and derivatives (such as esters, nitriles and amides) thereof. The softening by heating and the solidification by cooling can be repeated. The general linear high molecular compound can be a homopolymer or a copolymer, and has good physical and mechanical properties, excellent weather resistance, chemical resistance and water resistance, and high light and color retention. The molecular weight of the thermoplastic acrylic resin for the coating industry is 75000-120000 generally, and the common cellulose nitrate, cellulose acetate butyrate, perchloroethylene resin and the like are blended with the thermoplastic acrylic resin to improve the performance of a coating.
The vinyl ester resin is used as the unsaturated polyester resin, has high activity and high curing reaction speed, causes the vinyl ester resin to have large curing shrinkage after being cured, generally the unsaturated polyester resin (including the conventional vinyl resin) has large shrinkage during curing, can reach the body shrinkage of about 7-10 percent, has higher temperature resistance than the conventional novolac epoxy vinyl resin, can be applied to a 200 ℃ gas-phase strong corrosion environment for a long time, and simultaneously, the use experience shows that the resin can bear the temperature impact of 300 ℃ within 2-3 min.
The molecular structure of the epoxy resin contains active epoxy groups, so that the epoxy resin can be subjected to cross-linking reaction with various curing agents to form insoluble and infusible high polymer with a three-dimensional network structure. Therefore, the utility model has the following characteristics: convenient curing, strong adhesive force, low shrinkage, stable chemical property and mildew resistance. In addition, the insulating material has good insulating property and chemical corrosion resistance.
Further, the high-temperature-resistant and oxidation-resistant material comprises one or more of low-melting-point glass powder, polytetrafluoroethylene and silicide.
The low-melting-point glass powder has the following characteristics: 1. the low-melting-point glass powder is white powder in appearance, can bear 390-600 ℃ high temperature, and has the bulk specific gravity: 0.77-1.6g/cm3(ii) a 2. The average grain size of the low-melting-point glass powder is 6-13 mu m, and the average grain size of the common specification is 1250 meshes and 2000 meshes; 3. the low-melting-point glass powder has high purity, low impurity content, stable performance and good insulativity; 4. the low-melting-point glass powder can reduce exothermic peak temperature of plastic curing reaction and reduce linear expansion coefficient and shrinkage rate of a cured product, so that internal stress of the cured product is eliminated, and cracking is prevented; 5. the low-melting-point glass powder is not easy to react with other substances, does not react with most of acid and alkali, and has stronger corrosion resistance because the particles uniformly cover the surface of an object.
Further, the high-temperature-resistant anti-oxidation material also comprises ceramic powder.
Wherein, the ceramic powder has better wear resistance, high temperature resistance and corrosion resistance, and poor absorption, namely good impermeability. Preferably, in order to make the mixing effect of the ceramic powder with other flame-retardant and high-temperature-resistant materials and high-temperature-resistant and oxidation-resistant materials better, the particle size of the ceramic powder in the scheme can be respectively controlled to be 500 meshes at 300 and 900 meshes at 700 and 900 meshes.
Further, the particle size of the low-melting-point glass powder is 7-8 μm.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (6)
1. The high-temperature-resistant anti-falling powder coating is characterized in that: the flame-retardant and high-temperature-resistant material is formed by mixing a flame-retardant and high-temperature-resistant material and a high-temperature-resistant and antioxidant material, wherein the flame-retardant and high-temperature-resistant material comprises 80-90 parts by weight of thermosetting flame-retardant and high-temperature-resistant modified resin, 10-20 parts by weight of high-temperature-resistant and antioxidant material, and the thermosetting flame-retardant and high-temperature-resistant modified resin accounts for 75-85% of the flame-retardant and high-temperature-resistant material by weight.
2. The high-temperature-resistant anti-shedding powder coating as claimed in claim 1, wherein: the thermosetting flame-retardant high-temperature-resistant modified resin comprises nitrile-based resin and phenolic resin.
3. The high-temperature-resistant anti-shedding powder coating as claimed in claim 1, wherein: the flame-retardant high-temperature-resistant material comprises one or more of acrylic resin, vinyl resin, unsaturated polyester resin and epoxy resin.
4. The high-temperature-resistant anti-shedding powder coating as claimed in claim 3, wherein: the high-temperature resistant and oxidation resistant material comprises one or more of low-melting-point glass powder, polytetrafluoroethylene and silicide.
5. The high-temperature-resistant anti-shedding powder coating as claimed in claim 4, wherein: the high-temperature-resistant anti-oxidation material also comprises ceramic powder.
6. The high-temperature-resistant anti-shedding powder coating as claimed in claim 4, wherein: the particle size of the low-melting-point glass powder is 7-8 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118507.7A CN112920661A (en) | 2021-01-28 | 2021-01-28 | High-temperature-resistant anti-drop powder coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110118507.7A CN112920661A (en) | 2021-01-28 | 2021-01-28 | High-temperature-resistant anti-drop powder coating |
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| CN112920661A true CN112920661A (en) | 2021-06-08 |
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| CN202110118507.7A Pending CN112920661A (en) | 2021-01-28 | 2021-01-28 | High-temperature-resistant anti-drop powder coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752329A (en) * | 2022-05-31 | 2022-07-15 | 皇氏工匠(上海)企业发展有限公司 | High-temperature-resistant non-cracking epoxy color sand crack beautifying agent and preparation method thereof |
| CN115044283A (en) * | 2022-07-29 | 2022-09-13 | 东莞市美宸纳米材料有限公司 | Super-durable polyester powder coating composition |
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| US20040249044A1 (en) * | 2003-02-18 | 2004-12-09 | Tuan Nguyenquang | High temperature resistant coating composition |
| CN103102767A (en) * | 2012-12-12 | 2013-05-15 | 杨益 | High-temperature resistant coating and preparation method thereof |
| CN103320013A (en) * | 2013-06-05 | 2013-09-25 | 浙江华彩化工有限公司 | High-temperature-resistant powder paint preparation method |
| CN106752964A (en) * | 2017-01-24 | 2017-05-31 | 江苏肯创环境科技股份有限公司 | A kind of Graphene abrasion resistant fire blocking anti-corrosive powder paint and preparation method thereof |
| CN111825943A (en) * | 2020-07-27 | 2020-10-27 | 郴州功田电子陶瓷技术有限公司 | Resin composition for carbon-hydrogen copper-clad plate |
-
2021
- 2021-01-28 CN CN202110118507.7A patent/CN112920661A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040249044A1 (en) * | 2003-02-18 | 2004-12-09 | Tuan Nguyenquang | High temperature resistant coating composition |
| CN103102767A (en) * | 2012-12-12 | 2013-05-15 | 杨益 | High-temperature resistant coating and preparation method thereof |
| CN103320013A (en) * | 2013-06-05 | 2013-09-25 | 浙江华彩化工有限公司 | High-temperature-resistant powder paint preparation method |
| CN106752964A (en) * | 2017-01-24 | 2017-05-31 | 江苏肯创环境科技股份有限公司 | A kind of Graphene abrasion resistant fire blocking anti-corrosive powder paint and preparation method thereof |
| CN111825943A (en) * | 2020-07-27 | 2020-10-27 | 郴州功田电子陶瓷技术有限公司 | Resin composition for carbon-hydrogen copper-clad plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752329A (en) * | 2022-05-31 | 2022-07-15 | 皇氏工匠(上海)企业发展有限公司 | High-temperature-resistant non-cracking epoxy color sand crack beautifying agent and preparation method thereof |
| CN114752329B (en) * | 2022-05-31 | 2024-01-26 | 皇氏工匠(上海)企业发展有限公司 | High-temperature-resistant and cracking-free epoxy color sand joint beautifying agent and preparation method thereof |
| CN115044283A (en) * | 2022-07-29 | 2022-09-13 | 东莞市美宸纳米材料有限公司 | Super-durable polyester powder coating composition |
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Application publication date: 20210608 |