CN113372780A - Sand blasting process-free electrophoretic paint electrophoresis straight-sanding sensitive technology - Google Patents
Sand blasting process-free electrophoretic paint electrophoresis straight-sanding sensitive technology Download PDFInfo
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- CN113372780A CN113372780A CN202110614070.6A CN202110614070A CN113372780A CN 113372780 A CN113372780 A CN 113372780A CN 202110614070 A CN202110614070 A CN 202110614070A CN 113372780 A CN113372780 A CN 113372780A
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- paint
- sand
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4473—Mixture of polymers
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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
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/448—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications characterised by the additives used
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/04—Electrophoretic coating characterised by the process with organic material
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a process for directly applying sand to electrophoretic paint by electrophoresis without a sand blasting process, which specifically comprises the following steps: 1) preparing acrylic resin raw paint; 2) manufacturing sand pigment paste; 3) preparing an electrophoresis operating fluid; 4) degreasing and cleaning the metal surface of the workpiece, performing surface activation treatment, and putting the workpiece subjected to the surface activation treatment into electrophoresis operation liquid to electrify the metal surface to be plated with an electrophoresis paint film; 5) and (3) drying the workpiece by dripping water, putting the workpiece into an oven for drying, so that the electrophoretic paint film is cured into a frosted sand paint film, and naturally generating an uneven paint film with particle sense which is uniformly distributed by utilizing the vitrification effect of the acrylic resin raw paint which is baked and cured by hot air at the temperature of 145-160 ℃. The invention has the advantages that: the raw materials are reasonable in proportion, convenient to process and manufacture, good in attractiveness and good in popularization prospect and value, and the salt spray resistance, scratch resistance, color retention and solubility resistance of the paint are greatly improved.
Description
Technical Field
The invention relates to a process for directly applying sand sensitive electrophoretic paint by electrophoresis without a sand blasting process.
Background
The sand blasting is to spray sand materials (such as quartz sand, steel sand, aluminum oxide, silicon carbide and the like) onto the surface of a workpiece by using compressed air, remove rust, carbon deposition and the like on the surface of the workpiece by using high-speed sand flow, so that the surface of the workpiece has certain roughness, and the adhesive force of a coating is increased. Because the sand generates strong impact and cutting on the surface of the workpiece, part of the sand is quickly decomposed and floats in the air to form dust. Impurities such as scale, rust, etc. on the working surface are also pulverized by the impact of abrasive particles, and a large amount of dust is also generated. If the dust generated by the sand blasting process is not treated in time, the explosion hazard is caused. Failure to take proper precautions while performing the blasting operation can result in worker inhalation of dust, thereby predisposing to pneumoconiosis, a potentially fatal lung disease, and severely damaging human health. At present, dust pollution will affect people's health, especially in a dusty environment. Is susceptible to various diseases, such as cardiovascular and cerebrovascular diseases, asthma, bronchitis and the like. Especially for the elderly and children, the incidence is the highest and dust pollution must be considered. Noise pollution, mainly referred to as pressure sand blasting machine, is apt to reduce hearing due to airflow sound and rapid sand. How to provide a process of electrophoretic straight sanding electrophoretic paint without a sand blasting process becomes a research direction.
Disclosure of Invention
The invention aims to provide a process for directly applying sand sensitive electrophoretic paint by electrophoresis without a sand blasting process, so as to solve the problems in the background technology.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a process for directly applying sand to electrophoretic paint by electrophoresis without a sand blasting process specifically comprises the following steps:
1) preparing acrylic resin raw paint: uniformly mixing 55.25% of acrylic resin monomer, 0.75% of glacial acetic acid, 15% of phenyl isocyanate, 3% of diethanolamine, 0.4% of butyl cellosolve, 0.5% of propylene glycol methyl ether, 20% of deionized water and 5.1% of propylene glycol phenyl ether;
2) preparing sand color slurry: uniformly mixing 15% of epoxy dispersion resin, 4.5% of polyamide, 2% of n-butyl alcohol, 2% of butyl cellosolve, 1% of edible lactic acid, 5% of titanium dioxide, 15% of kaolin, 50.5% of deionized water and 5% of color pigment;
3) preparing an electrophoresis operating fluid: mixing acrylic resin base paint: mixing the sand color slurry in a ratio of 1:1-2:1, and adding pure water which is 4-5 times of the total amount of the acrylic resin base paint and the sand color slurry as electrophoresis operation liquid;
4) degreasing and cleaning the metal surface of a workpiece, performing surface activation treatment, putting the workpiece subjected to the surface activation treatment into electrophoresis operating liquid, electrifying the metal surface to plate an electrophoresis paint film, and generating an uneven electrophoresis paint water-containing wet film with uniform dispersion in a cold chain bridging mode by utilizing different painting film efficiencies of two different types of resin, namely acrylic resin base paint and sand color paste;
5) and (3) dripping water of the workpiece, drying the workpiece in an oven, curing the electrophoretic paint film into a frosted sand paint film, and naturally generating an uneven paint film with particle sense which is uniformly distributed in a stage of simultaneous curing of the acrylic resin raw paint and the sand color paste by utilizing the vitrification effect of the acrylic resin raw paint cured by hot air baking at the temperature of 145-plus-160 ℃ and the differentiation of the vitrification effect of the epoxy dispersion resin of the sand color paste cured by hot air baking at the temperature of 180 ℃.
Preferably, the color pigment in step 2) is carbon black.
The invention has the advantages that: the raw materials are reasonable in proportion, convenient to process and manufacture, good in attractiveness and good in popularization prospect and value, and the salt spray resistance, scratch resistance, color retention and solubility resistance of the paint are greatly improved.
Detailed Description
The invention is illustrated below by means of specific examples, without being restricted thereto.
Examples
A process for directly applying sand to electrophoretic paint by electrophoresis without a sand blasting process specifically comprises the following steps:
1) preparing acrylic resin raw paint: uniformly mixing 55.25% of acrylic resin monomer, 0.75% of glacial acetic acid, 15% of phenyl isocyanate, 3% of diethanolamine, 0.4% of butyl cellosolve, 0.5% of propylene glycol methyl ether, 20% of deionized water and 5.1% of propylene glycol phenyl ether;
2) preparing sand color slurry: uniformly mixing 15% of epoxy dispersion resin, 4.5% of polyamide, 2% of n-butyl alcohol, 2% of butyl cellosolve, 1% of edible lactic acid, 5% of titanium dioxide, 15% of kaolin, 50.5% of deionized water and 5% of color pigment;
3) preparing an electrophoresis operating fluid: mixing acrylic resin base paint: mixing the sand color slurry in a ratio of 1:1-2:1, and adding pure water which is 4-5 times of the total amount of the acrylic resin base paint and the sand color slurry as electrophoresis operation liquid;
4) degreasing and cleaning the metal surface of a workpiece, performing surface activation treatment, putting the workpiece subjected to the surface activation treatment into electrophoresis operating liquid, electrifying the metal surface to plate an electrophoresis paint film, and generating an uneven electrophoresis paint water-containing wet film with uniform dispersion in a cold chain bridging mode by utilizing different painting film efficiencies of two different types of resin, namely acrylic resin base paint and sand color paste;
5) and (3) dripping water of the workpiece, drying the workpiece in an oven, curing the electrophoretic paint film into a frosted sand paint film, and naturally generating an uneven paint film with particle sense which is uniformly distributed in a stage of simultaneous curing of the acrylic resin raw paint and the sand color paste by utilizing the vitrification effect of the acrylic resin raw paint cured by hot air baking at the temperature of 145-plus-160 ℃ and the differentiation of the vitrification effect of the epoxy dispersion resin of the sand color paste cured by hot air baking at the temperature of 180 ℃.
In a preferred embodiment of this embodiment, the color pigment in step 2) is carbon black.
When the method is implemented specifically, on the basis of the same component conditions, the carbon black components are removed, and different pigments are added, so that the sand paint film effect with different colors can be produced. By utilizing the respective resin characteristics of acrylic resin and epoxy dispersion resin, an electrophoretic paint film is simultaneously separated out when power is supplied in a cold chain bridging mode, and a paint film with a special net-shaped structure is formed by bridging, so that the performance of the cured paint film is greatly improved, and titanium dioxide is added, under the action of filler of kaolin, the protective performance of the electrophoretic paint film is stronger, such as the salt spray resistance is improved (the paint film can be improved from about 100 hours in the original neutral salt spray test to more than 500 hours in the neutral salt spray test), the scratch resistance of the surface of the paint film is improved (the paint film can be improved from 3H in the original Chinese hardness pen test to more than 4H in the Chinese hardness pen test), the color retention of the paint film is more durable, (the UV resistance test can be more than 500 hours), and the solvent resistance of the paint film is also improved (the alcohol wiping test can be improved from 80 times to more than 250 times). According to the experimental electrophoresis processing factory which is observed and proved to be actually put into production and used at present, the process can be utilized on the existing metal processing market to fully meet the requirement that the surface of metal materials on the existing indoor and outdoor hardware or bicycles, locomotives, automobile accessories or sports equipment is coated with a sand feeling, the protection effect of the metal hardware can be enhanced, the service life of the metal hardware can be prolonged, and the sand blasting process link is simplified. The processing process can meet the requirement on environmental protection, reduce the pollution to the environment and reduce the occupational injury of processing personnel.
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 (2)
1. A process for directly applying sand sensitive electrophoretic paint by electrophoresis without a sand blasting process is characterized by comprising the following steps:
1) preparing acrylic resin raw paint: uniformly mixing 55.25% of acrylic resin monomer, 0.75% of glacial acetic acid, 15% of phenyl isocyanate, 3% of diethanolamine, 0.4% of butyl cellosolve, 0.5% of propylene glycol methyl ether, 20% of deionized water and 5.1% of propylene glycol phenyl ether;
2) preparing sand color slurry: uniformly mixing 15% of epoxy dispersion resin, 4.5% of polyamide, 2% of n-butyl alcohol, 2% of butyl cellosolve, 1% of edible lactic acid, 5% of titanium dioxide, 15% of kaolin, 50.5% of deionized water and 5% of color pigment;
3) preparing an electrophoresis operating fluid: mixing acrylic resin base paint: mixing the sand color slurry in a ratio of 1:1-2:1, and adding pure water which is 4-5 times of the total amount of the acrylic resin base paint and the sand color slurry as electrophoresis operation liquid;
4) degreasing and cleaning the metal surface of a workpiece, performing surface activation treatment, putting the workpiece subjected to the surface activation treatment into electrophoresis operating liquid, electrifying the metal surface to plate an electrophoresis paint film, and generating an uneven electrophoresis paint water-containing wet film with uniform dispersion in a cold chain bridging mode by utilizing different painting film efficiencies of two different types of resin, namely acrylic resin base paint and sand color paste;
5) and (3) dripping water of the workpiece, drying the workpiece in an oven, curing the electrophoretic paint film into a frosted sand paint film, and naturally generating an uneven paint film with particle sense which is uniformly distributed in a stage of simultaneous curing of the acrylic resin raw paint and the sand color paste by utilizing the vitrification effect of the acrylic resin raw paint cured by hot air baking at the temperature of 145-plus-160 ℃ and the differentiation of the vitrification effect of the epoxy dispersion resin of the sand color paste cured by hot air baking at the temperature of 180 ℃.
2. The process of electrophoretic straight sanding electrophoretic paint for sandblasting-free process as claimed in claim 1, wherein: the color pigment in the step 2) is carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110614070.6A CN113372780A (en) | 2021-06-02 | 2021-06-02 | Sand blasting process-free electrophoretic paint electrophoresis straight-sanding sensitive technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110614070.6A CN113372780A (en) | 2021-06-02 | 2021-06-02 | Sand blasting process-free electrophoretic paint electrophoresis straight-sanding sensitive technology |
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| Publication Number | Publication Date |
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| CN113372780A true CN113372780A (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110614070.6A Pending CN113372780A (en) | 2021-06-02 | 2021-06-02 | Sand blasting process-free electrophoretic paint electrophoresis straight-sanding sensitive technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981509A (en) * | 2021-10-28 | 2022-01-28 | 浙江今飞凯达轮毂股份有限公司 | Fine polishing electrophoresis combined production process for aluminum alloy wheel hub |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702928A (en) * | 2012-06-27 | 2012-10-03 | 广州立邦涂料有限公司 | Tin-free environment-friendly electrophoretic paint and preparation method thereof |
| CN107641392A (en) * | 2017-09-29 | 2018-01-30 | 江苏皓月涂料有限公司 | A kind of electrophoresis paint for priming paint and top lacquer |
| CN108047845A (en) * | 2017-12-18 | 2018-05-18 | 枣阳市旺前电泳涂料有限公司 | A kind of fastener cathode electrophoretic paint and preparation method |
| CN112266714A (en) * | 2020-10-29 | 2021-01-26 | 浩力森化学科技（江苏）有限公司 | Preparation method of epoxy modified super-matte acrylic coating |
-
2021
- 2021-06-02 CN CN202110614070.6A patent/CN113372780A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702928A (en) * | 2012-06-27 | 2012-10-03 | 广州立邦涂料有限公司 | Tin-free environment-friendly electrophoretic paint and preparation method thereof |
| CN107641392A (en) * | 2017-09-29 | 2018-01-30 | 江苏皓月涂料有限公司 | A kind of electrophoresis paint for priming paint and top lacquer |
| CN108047845A (en) * | 2017-12-18 | 2018-05-18 | 枣阳市旺前电泳涂料有限公司 | A kind of fastener cathode electrophoretic paint and preparation method |
| CN112266714A (en) * | 2020-10-29 | 2021-01-26 | 浩力森化学科技（江苏）有限公司 | Preparation method of epoxy modified super-matte acrylic coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981509A (en) * | 2021-10-28 | 2022-01-28 | 浙江今飞凯达轮毂股份有限公司 | Fine polishing electrophoresis combined production process for aluminum alloy wheel hub |
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Application publication date: 20210910 |