CN110819217A - Mirror silver powder coating for electric vehicle and preparation method thereof - Google Patents
Mirror silver powder coating for electric vehicle and preparation method thereof Download PDFInfo
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- CN110819217A CN110819217A CN201911126219.5A CN201911126219A CN110819217A CN 110819217 A CN110819217 A CN 110819217A CN 201911126219 A CN201911126219 A CN 201911126219A CN 110819217 A CN110819217 A CN 110819217A
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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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
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Health & Medical Sciences (AREA)
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- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a mirror silver powder coating for an electric vehicle and a preparation method thereof. The mirror surface silver powder coating for the electric vehicle comprises polyester resin, hydroxy acrylic resin, a curing agent, an accelerator, a leveling agent, a defoaming agent, barium sulfate and aluminum silver powder. The invention adopts the polyester resin and the modified hydroxyl acrylic resin as the resin base material of the powder coating, can simultaneously give consideration to the surface hardness and the mechanical properties of a coating, and can further improve various properties of the coating, including weather resistance, fluidity, glossiness and the like after adding the curing agent, the accelerator, the flatting agent, the defoaming agent and the barium sulfate. The powder coating of the invention not only can obviously reduce the production cost, but also can meet the requirement of environmental protection.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a mirror silver powder coating for an electric vehicle and a preparation method thereof.
Background
The mirror silver coating has strong metal feeling, high mirror effect and strong decorative effect, so the mirror silver coating is popular with consumers. The mirror silver coating has extremely high utilization rate on the electric vehicle, and the mirror silver coating commonly used at present is mostly solvent-based coating, so that the coating efficiency is low, high VOC can cause pollution to personnel and environment, and the requirement of environmental protection is not met. Meanwhile, because the film is formed mainly by volatilization of the solvent, no chemical crosslinking reaction occurs during film formation, so that the hardness, the rubbing resistance, the solvent resistance and other chemical properties of the film are poor, and the use is limited to a great extent.
The powder paint is a solid powder synthetic resin paint composed of solid resin, pigment, filler and assistant, and is different from common solvent paint and water paint in that its dispersion medium is not solvent and water, but air, so it has the features of no solvent pollution, 100% filming and low energy consumption.
At present, the wheel spraying of the electric vehicle is mainly selected to be electroplating, if the powder coating can be applied, the production cost can be greatly reduced, and meanwhile, the environmental protection requirement is met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the mirror surface silver powder coating for the electric vehicle, which can meet the requirements of the wheel hub and the bumper of the electric vehicle on the mirror surface coating effect and has excellent corrosion resistance and aging resistance.
The mirror surface silver powder coating for the electric vehicle comprises the following raw materials in parts by weight: 70-85 parts of polyester resin, 3-5 parts of hydroxy acrylic resin, 4-6 parts of curing agent, 0.5-1.2 parts of accelerator, 0.5-1 part of flatting agent, 0.5-1 part of defoaming agent, 15-20 parts of barium sulfate and 2-4 parts of aluminum silver powder.
Further, the thermosetting acrylic resin is prepared from methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile; the weight ratio of methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile is 1: 1: 0.4: 0.025: 0.1: 0.2.
further, the acid value of the polyester resin is 30-35mg KOH/g, the glass transition temperature is 58-68 ℃, and the viscosity at 200 ℃ is 3500-4500 mPa.s.
Further, the curing agent is triglycidyl triisocyanate, and the catalyst is dibutyltin dilaurate.
Further, the aluminum silver powder is floating aluminum silver powder.
The preparation method of the mirror silver powder coating for the electric vehicle comprises the following steps:
step 1, adding methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile into a solvent for polymerization reaction to obtain hydroxyl acrylic resin;
step 2, mixing and crushing polyester resin, hydroxy acrylic resin, a curing agent, an accelerator, a flatting agent, a defoaming agent and barium sulfate;
step 3, feeding the crushed mixed material into a double-screw extruder for extrusion;
and 4, tabletting, cooling, crushing and screening the extruded material, and uniformly mixing the material with the aluminum silver powder to obtain the mirror surface silver powder coating for the electric vehicle.
Further, the hydroxyl acrylic resin has an acid value of 48-55 mgKOH/g, a glass transition temperature of 50-70 ℃ and a viscosity of 2500-3500 mPa.s at 200 ℃.
Further, the temperature of the twin-screw extruder is 85-120 ℃.
The invention adopts the polyester resin and the modified hydroxyl acrylic resin as the resin base material of the powder coating, can simultaneously give consideration to the surface hardness and the mechanical properties of a coating, and can further improve various properties of the coating, including weather resistance, fluidity, glossiness and the like after adding the curing agent, the accelerator, the flatting agent, the defoaming agent and the barium sulfate. The powder coating of the invention not only can obviously reduce the production cost, but also can meet the requirement of environmental protection.
Detailed Description
The technical solution of the present invention is further described below with reference to specific examples.
Example 1
The mirror surface silver powder coating for the electric vehicle comprises the following raw materials in parts by weight: 70 parts of polyester resin, 3 parts of hydroxy acrylic resin, 4 parts of curing agent, 0.5 part of accelerator, 0.5 part of flatting agent, 0.5 part of defoaming agent, 15 parts of barium sulfate and 2 parts of aluminum silver powder.
Specifically, the acid value of the polyester resin is 30-35mg KOH/g, the glass transition temperature is 58-68 ℃, and the viscosity at 200 ℃ is 3500-4500 mPa.s.
The curing agent is triglycidyl triisocyanate, and the catalyst is dibutyltin dilaurate.
The aluminum silver powder is floating aluminum silver powder.
The preparation method of the powder coating comprises the following steps:
step 1, adding methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile into a solvent xylene for polymerization reaction, wherein the reaction condition is that the temperature is kept at 110 ℃ for 4h under the condition of 100-;
the hydroxyl acrylic resin has an acid value of 48-55 mgKOH/g, a glass transition temperature of 50-70 ℃ and a viscosity of 2500-3500 mPa.s at 200 ℃;
step 2, mixing and crushing polyester resin, hydroxy acrylic resin, a curing agent, an accelerator, a flatting agent, a defoaming agent and barium sulfate;
step 3, feeding the crushed mixed material into a double-screw extruder for extrusion, wherein the heating temperature of the double-screw extruder is 85-120 ℃;
and 4, tabletting, cooling, crushing and screening the extruded material, and uniformly mixing the material with the aluminum silver powder to obtain the mirror surface silver powder coating for the electric vehicle.
Example 2
The mirror surface silver powder coating for the electric vehicle comprises 80 parts of polyester resin, 4 parts of hydroxy acrylic resin, 5 parts of curing agent, 0.8 part of accelerator, 0.7 part of flatting agent, 0.8 part of defoaming agent, 17 parts of barium sulfate and 3 parts of aluminum silver powder.
Specifically, the acid value of the polyester resin is 30-35mg KOH/g, the glass transition temperature is 58-68 ℃, and the viscosity at 200 ℃ is 3500-4500 mPa.s.
The curing agent is triglycidyl triisocyanate, and the catalyst is dibutyltin dilaurate.
The aluminum silver powder is floating aluminum silver powder.
The preparation method of the powder coating comprises the following steps:
step 1, adding methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile into a solvent xylene for polymerization reaction, wherein the reaction condition is that the temperature is kept at 110 ℃ for 4h under the condition of 100-;
the hydroxyl acrylic resin has an acid value of 48-55 mgKOH/g, a glass transition temperature of 50-70 ℃ and a viscosity of 2500-3500 mPa.s at 200 ℃;
step 2, mixing and crushing polyester resin, hydroxy acrylic resin, a curing agent, an accelerator, a flatting agent, a defoaming agent and barium sulfate;
step 3, feeding the crushed mixed material into a double-screw extruder for extrusion, wherein the heating temperature of the double-screw extruder is 85-120 ℃;
and 4, tabletting, cooling, crushing and screening the extruded material, and uniformly mixing the material with the aluminum silver powder to obtain the mirror surface silver powder coating for the electric vehicle.
Example 3
The mirror surface silver powder coating for the electric vehicle comprises 85 parts of polyester resin, 5 parts of hydroxy acrylic resin, 6 parts of curing agent, 1.2 parts of accelerator, 1 part of flatting agent, 1 part of defoaming agent, 20 parts of barium sulfate and 4 parts of aluminum silver powder.
Specifically, the acid value of the polyester resin is 30-35mg KOH/g, the glass transition temperature is 58-68 ℃, and the viscosity at 200 ℃ is 3500-4500 mPa.s.
The curing agent is triglycidyl triisocyanate, and the catalyst is dibutyltin dilaurate.
The aluminum silver powder is floating aluminum silver powder.
The preparation method of the powder coating comprises the following steps:
step 1, adding methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile into a solvent xylene for polymerization reaction, wherein the reaction condition is that the temperature is kept at 110 ℃ for 4h under the condition of 100-;
the hydroxyl acrylic resin has an acid value of 48-55 mgKOH/g, a glass transition temperature of 50-70 ℃ and a viscosity of 2500-3500 mPa.s at 200 ℃;
step 2, mixing and crushing polyester resin, hydroxy acrylic resin, a curing agent, an accelerator, a flatting agent, a defoaming agent and barium sulfate;
step 3, feeding the crushed mixed material into a double-screw extruder for extrusion, wherein the heating temperature of the double-screw extruder is 85-120 ℃;
and 4, tabletting, cooling, crushing and screening the extruded material, and uniformly mixing the material with the aluminum silver powder to obtain the mirror surface silver powder coating for the electric vehicle.
Comparative example 1
In contrast to example 2, no hydroxyacrylic resin was added in this example.
Comparative example 2
In contrast to example 2, the aluminum silver powder of this example was added in step 2.
And (3) electrostatically spraying the powder coating on the surfaces of steel used for a rear clothes rack and a bumper, then baking in a curing furnace, setting the baking temperature at 140 ℃, setting the baking time at 35min, cooling, and carrying out performance test.
The salt spray test is carried out according to QXR 1141.26-2012, and the aging test is carried out according to GB/T31881-2015.
After the salt spray test is carried out on the samples of the powder coatings prepared in the examples 1-4, the samples are completely covered with oxide skin, no iron rust is seen on the surface of steel, and the appearance is not obviously changed after the aging test; in contrast, the scale of the sample of the comparative example fell off, rust appeared on the surface of the steel material, and the appearance changed significantly after the aging test.
The samples of the powder coatings prepared in the examples 1 to 4 are subjected to impact and adhesion tests, the impact resistance and the adhesion are 0 grade, the cut edges are smooth, and no one line of the cut edges falls off; while the sample of the comparative example failed.
Claims (8)
1. The mirror surface silver powder coating for the electric vehicle is characterized in that: the raw materials comprise the following components in parts by weight: 70-85 parts of polyester resin, 3-5 parts of hydroxy acrylic resin, 4-6 parts of curing agent, 0.5-1.2 parts of accelerator, 0.5-1 part of flatting agent, 0.5-1 part of defoaming agent, 15-20 parts of barium sulfate and 2-4 parts of aluminum silver powder.
2. The mirror-like silver powder coating for electric vehicles according to claim 1, characterized in that: the thermosetting acrylic resin is prepared from methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azodiisobutyronitrile; the weight ratio of methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile is 1: 1: 0.4: 0.025: 0.1: 0.2.
3. the mirror-like silver powder coating for electric vehicles according to claim 1, characterized in that: the acid value of the polyester resin is 30-35mg KOH/g, the glass transition temperature is 58-68 ℃, and the viscosity is 3500-4500 (200 ℃, mpa & s).
4. The mirror-like silver powder coating for electric vehicles according to claim 1, characterized in that: the curing agent is triglycidyl triisocyanate, and the catalyst is dibutyltin dilaurate.
5. The mirror-like silver powder coating for electric vehicles according to claim 1, characterized in that: the aluminum silver powder is floating aluminum silver powder.
6. The method for preparing a mirror-like silver powder coating for electric vehicles according to claim 1, characterized in that: the method comprises the following steps:
step 1, adding methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, acrylic acid, epoxy acrylate and azobisisobutyronitrile into a solvent for polymerization reaction to obtain hydroxyl acrylic resin;
step 2, mixing and crushing polyester resin, hydroxy acrylic resin, a curing agent, an accelerator, a flatting agent, a defoaming agent and barium sulfate;
step 3, feeding the crushed mixed material into a double-screw extruder for extrusion;
and 4, tabletting, cooling, crushing and screening the extruded material, and uniformly mixing the material with the aluminum silver powder to obtain the mirror surface silver powder coating for the electric vehicle.
7. The method of claim 6, wherein: the hydroxyl acrylic resin has an acid value of 48-55 mgKOH/g, a glass transition temperature of 50-70 ℃ and a viscosity of 2500-3500 mPa.s at 200 ℃.
8. The method of claim 6, wherein: the temperature of the double-screw extruder is 85-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126219.5A CN110819217A (en) | 2019-11-18 | 2019-11-18 | Mirror silver powder coating for electric vehicle and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126219.5A CN110819217A (en) | 2019-11-18 | 2019-11-18 | Mirror silver powder coating for electric vehicle and preparation method thereof |
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| CN110819217A true CN110819217A (en) | 2020-02-21 |
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| CN201911126219.5A Pending CN110819217A (en) | 2019-11-18 | 2019-11-18 | Mirror silver powder coating for electric vehicle and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117070135A (en) * | 2023-10-07 | 2023-11-17 | 佛山市南海嘉多彩粉末涂料有限公司 | Weather-resistant powder coating and preparation method thereof |
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| JP2003128978A (en) * | 2001-10-24 | 2003-05-08 | Nippon Yushi Basf Coatings Kk | Primer coating for vehicle, coating film for vehicle and method for coating polyolefin-based substrate for vehicle |
| CN101508869A (en) * | 2009-03-19 | 2009-08-19 | 浙江华彩化工有限公司 | Stainless steel colored aluminum silver power paint and method of preparing the same |
| CN104745042A (en) * | 2015-01-29 | 2015-07-01 | 江苏华光新材料科技有限公司 | Ultra-level highlight powder coating formula and preparation method thereof |
| CN105111362A (en) * | 2015-09-14 | 2015-12-02 | 天津翔盛粉末涂料有限公司 | Efficient mirror plane flatting agent for powder paint, preparation method and application |
-
2019
- 2019-11-18 CN CN201911126219.5A patent/CN110819217A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003128978A (en) * | 2001-10-24 | 2003-05-08 | Nippon Yushi Basf Coatings Kk | Primer coating for vehicle, coating film for vehicle and method for coating polyolefin-based substrate for vehicle |
| CN101508869A (en) * | 2009-03-19 | 2009-08-19 | 浙江华彩化工有限公司 | Stainless steel colored aluminum silver power paint and method of preparing the same |
| CN104745042A (en) * | 2015-01-29 | 2015-07-01 | 江苏华光新材料科技有限公司 | Ultra-level highlight powder coating formula and preparation method thereof |
| CN105111362A (en) * | 2015-09-14 | 2015-12-02 | 天津翔盛粉末涂料有限公司 | Efficient mirror plane flatting agent for powder paint, preparation method and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117070135A (en) * | 2023-10-07 | 2023-11-17 | 佛山市南海嘉多彩粉末涂料有限公司 | Weather-resistant powder coating and preparation method thereof |
| CN117070135B (en) * | 2023-10-07 | 2024-03-19 | 佛山市南海嘉多彩粉末涂料有限公司 | Weather-resistant powder coating and preparation method thereof |
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