CN112521794A - Long-acting aging-resistant cathode electrophoretic paint and application thereof - Google Patents
Long-acting aging-resistant cathode electrophoretic paint and application thereof Download PDFInfo
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- CN112521794A CN112521794A CN202011472709.3A CN202011472709A CN112521794A CN 112521794 A CN112521794 A CN 112521794A CN 202011472709 A CN202011472709 A CN 202011472709A CN 112521794 A CN112521794 A CN 112521794A
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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
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/443—Polyepoxides
- C09D5/4457—Polyepoxides containing special additives, e.g. pigments, polymeric particles
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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
- C09D5/08—Anti-corrosive paints
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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
- C09D5/4407—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained by polymerisation reactions involving only carbon-to-carbon unsaturated bonds
- C09D5/4411—Homopolymers or copolymers of acrylates or methacrylates
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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
- 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
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- 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
- C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
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Abstract
The invention discloses a long-acting aging-resistant cathode electrophoretic paint which is characterized by comprising four parts, namely a cross-linking agent, a main resin, an emulsion and black slurry, wherein the main components of the resin adopted by the invention are epoxy resin and acrylic resin, the epoxy resin with large surface tension is deposited at the lower layer during baking and the acrylic resin with small surface tension is floated on the surface layer by utilizing the difference of the surface tension of the epoxy resin and the acrylic resin, so that the bottom-surface integrated cathode electrophoretic paint with good aging resistance and corrosion resistance can be formed. The long-acting anti-aging cathode electrophoretic paint is a water-based paint, has the voc content far lower than 420 g/L, accords with the national industrial policy, is safe and environment-friendly, and has no harm to the environment and operators. The cathode electrophoretic paint not only has the general advantages of the traditional electrophoretic paint, such as excellent corrosion resistance of a coating, high utilization rate of the paint, and the like, but also has excellent aging resistance.
Description
Technical Field
The invention belongs to the technical field of automobile coating protection, and relates to a long-acting anti-aging cathode electrophoretic paint and application thereof.
Background
The electrophoretic coating has the characteristics of excellent corrosion resistance of the coating, good covering capacity, high automation degree of coating equipment, less pollution, high utilization rate of the coating and the like, is an environment-friendly high-performance coating mode, and is widely applied to the field of automobile coating.
The frame is located at the bottom of the automobile body as one of key components of the automobile, the working condition is severe, the coating is required to have excellent corrosion resistance, the middle coating and the top coating are not carried out after the common base coating of the frame and the container, and the actual frame and the container also have higher aging resistance requirements. Most of electrophoretic paint coating uses epoxy resin, and is easy to age under light and poor in aging resistance. Therefore, the market urgently needs an electrophoretic coating with corrosion resistance and long-term aging resistance.
At present, although much work is done on the development and research of domestic aging-resistant cathode electrophoretic paint, mature application is not seen yet. For example, the product application test of the aging-resistant electrophoretic paint performed by a part manufacturer finds that the salt spray resistance of a coating film is greatly reduced from the original 1000 hours to about 500 hours, and the product cannot reach the qualified standard, and further, the product application test of the aging-resistant electrophoretic paint performed by a certain automobile chassis manufacturer finds that the aging resistance of the coating film is improved and is not obviously improved from the original 100 hours to 200 hours, and the long-term weather resistance cannot be achieved.
The project achieves the balance of salt spray resistance and aging resistance, greatly improves the aging resistance of the coating film under the condition of not reducing much salt spray resistance, and truly achieves the balance and unity of the salt spray resistance and the aging resistance. The product formula adopts coexistence of two systems of epoxy and acrylic acid, and the two systems are better fused and reach long-term stability through proper emulsification, so that the double characteristics of good salt spray resistance of epoxy products and good aging resistance of acrylic products are shown. The prepared bath solution can be stably applied for a long time.
Disclosure of Invention
The main components of the resin adopted by the invention are epoxy resin and acrylic resin, the epoxy resin with large surface tension sinks at the lower layer during baking and the acrylic resin with small surface tension floats on the surface layer by utilizing the difference of the surface tension of the epoxy resin and the acrylic resin, so that the primer-topcoat integrated cathode electrophoretic paint with good aging resistance and corrosion resistance can be formed.
In order to achieve the purpose, the invention discloses a long-acting aging-resistant cathode electrophoretic paint which is characterized by comprising four parts, namely a cross-linking agent, a main resin, an emulsion and black slurry, wherein the four parts are
The cross-linking agent comprises the following components:
serial number raw material name and mass portion
1 isocyanate 35-45
2 catalyst 0.4-0.8
3 sealant 35-45
4 polyether resin 15-25
The main resin has the following components:
serial number raw material name and mass portion
1 epoxy resin 30-40
2 auxiliary solvent 15-25
3-6 amine hardeners
4-ketimine 10-20
5 crosslinking agent 20-30
6 PH value regulator 1-2
The composition of the emulsion was as follows:
serial number raw material name and mass portion
1 Main body resin 20-40
2 acrylic resin 10-15
3 PH value regulator 0.5-1.5
4 emulsifier 1-2
5 deionized water 50-60
The black paste comprises the following components:
serial number raw material name and mass portion
1 Main body resin 10-20
2 acrylic resin 2-6
3 auxiliary solvent 2-6
4 dispersant 1-2
5 PH value regulator 2-4
6 pigments 3 to 9
7 filler 20-30
8 dust-proof agent 1-2
9 deionized water 30-40
The long-acting aging-resistant cathode electrophoretic paint preferably comprises a cross-linking agent, a main resin, an emulsion and black paste, wherein
The cross-linking agent comprises the following components:
serial number raw material name and mass portion
1 isocyanate 40
2 catalyst 0.5
3 blocking agent 40
4 polyether resin 19.5
The main resin has the following components:
serial number raw material name and mass portion
1 epoxy resin 37.9
2 Co-solvent 20.3
3 amine hardeners 3.4
4 Ketimine 11.4
5 crosslinking agent 25.9
6 pH regulator 1.1
The composition of the emulsion was as follows:
serial number raw material name and mass portion
1 Main body resin 30.9
2 acrylic resin 11.6
3 pH regulator 0.9
4 emulsifier 1.9
5 deionized Water 54.7
The black paste comprises the following components:
serial number raw material name and mass portion
1 bulk resin 17.5
2 acrylic resin 4.4
3 Co-solvent 4.4
4 dispersant 1.5
5 pH regulator 2.9
6 pigments 5.3
7 Filler 26.0
8 dust-proofing agent 1.5
9 deionized Water 36.5
Wherein the raw materials are as follows:
isocyanate: toluene diisocyanate or diphenylmethane diisocyanate
Catalyst: dibutyl tin dilaurate or bismuth methanesulfonate
A sealing agent: ethylene glycol ethyl ether or methyl ethyl ketoxime
Polyether resin: polyether 330n or polyether 3050
Epoxy resin 601 resin, 604 resin or 801 resin
Acrylic resin: 341 resin, SC370 resin or 7141 resin
Cosolvent: propylene glycol methyl ether, propylene glycol ethyl ether, ethylene glycol butyl ether, diethylene glycol butyl ether, isopropanol or n-butanol,
amine hardener: triethanolamine, diethanolamine or diethylamine
Ketimine: BS-8155 epoxy hardener;
DJ2425 epoxy curing agent
pH value regulator: acetic acid or lactic acid
Emulsifier: alkylimidazolines, OP-10 or phenethylphenol polyoxyethylene ethers
Dispersing agent: EFKA FA4620, EFKA 4550 or EFKA 4650
Pigment: carbon black or carbon black (DP)
Filling: kaolin, talc or barium sulfate
Anti-settling agent: bentonite paste or dust wax.
The invention mainly solves the problem of poor aging resistance of common electrophoretic paint, mainly inspects the aging resistance and salt spray resistance of the common electrophoretic paint, and has the main difficulty of balancing the aging resistance and the salt spray resistance of a coating film and simultaneously keeping the stability of the coating.
The invention further discloses application of the long-acting anti-aging cathode electrophoretic paint in coating of automobile frames and parts thereof. In particular to the application of improving the aging resistance of the automobile frame and parts thereof. The experimental result shows that the artificial aging resistance can reach 600 hours.
The long-acting aging-resistant cathode electrophoretic paint prepared by the invention (example 1-2) is detected by the following indexes:
1. performance indexes are as follows:
(1) solid content: emulsion: 35 +/-2% of color paste: 48 +/-2%
(2) Curing temperature: 175 deg.C/30 min
(3) Appearance of the coating: is flat and smooth
(4) Distinctness of image (horizontal plane): not less than 0.7
(5) Adhesion force: (cross-hatch method) mm is less than or equal to 1
(6) Pencil hardness: not less than 2H
(7) Flexibility: not more than 1 mm
(8) Impact 50cm through
(9) Salt spray resistance: no bubbling and rust after 800 h.
(10) Artificial aging resistance: 600h, the non-polishing light loss rate is less than or equal to 30 percent, and the light loss rate after polishing is less than or equal to 10 percent
(11) The sulfuric acid resistance (0.05mol/L) is 24 hours, and the paint film is unchanged.
(12) And the resistance to sodium hydroxide (0.1mol/L) is 4 hours, and the paint film is unchanged.
(13) Gasoline resistance (93 #): and 8h, no change of the paint film.
(14) Engine oil resistance (SF 10W/30): and 24h, no change is caused in the paint film.
(15) Temperature change resistance: and after the temperature change test is carried out according to Y06-050, the mechanical property of the paint film is qualified.
(15) Moisture and heat resistance: and 240h, the paint film has no change.
2. The product characteristics are as follows:
(1) low solvent content: the product is water-based paint, has low solvent content, and greatly reduces the discharge amount of VOC.
(2) The hardness can reach over 2H of pencil.
(3) Excellent distinctness of image: the product has distinctness of image of above 0.7, and has excellent appearance.
(4) Aging resistance: the product has excellent aging resistance and can protect workpieces for a long time.
(5) Salt spray resistance: the product has excellent salt fog resistance, and a paint film can withstand severe environment tests.
Compared with the prior art, the long-acting anti-aging cathode electrophoretic paint disclosed by the invention has the positive effects that:
(1) the long-acting anti-aging cathode electrophoretic paint disclosed by the invention is a water-based paint, has the voc content far lower than 420 g/L, accords with the national industrial policy, is safe and environment-friendly, and does not harm the environment and operators.
(2) The invention not only has the general advantages of the traditional electrophoretic paint, such as excellent corrosion resistance of the coating, high utilization rate of the paint, and the like, but also has excellent aging resistance. The ageing resistance index can reach 600 hours.
(3) The present invention does not contain heavy metals such as lead, and therefore does not require a lead-containing wastewater treatment system, and can be applied to any UF loading without causing clogging of the UF membrane.
Detailed Description
The invention is described below by means of specific embodiments. Unless otherwise specified, the technical means used in the present invention are well known to those skilled in the art. In addition, the embodiments should be considered illustrative, and not restrictive, of the scope of the invention, which is defined solely by the claims. It will be apparent to those skilled in the art that various changes or modifications in the components and amounts of the materials used in these embodiments can be made without departing from the spirit and scope of the invention. The raw materials and reagents used in the present invention are commercially available.
Example 1:
a crosslinking agent:
raw material name example 1 example 2
Toluene diisocyanate 4039
Dibutyltin dilaurate 0.50.5
Ethylene glycol Ether 4038
Polyether resin 330n 19.522.5
Main resin:
raw material name example 1 example 2
Epoxy 60430.428.4
Epoxy 6017.69.5
Propylene glycol methyl ether 7.96.9
Propylene glycol Ether 7.96.9
Ethylene glycol butyl ether 4.42.4
Triethanolamine 0.20.2
Diethanolamine 3.23.3
BS-8155 epoxy hardener 11.411.4
Cross-linking agent 25.925.9
Acetic acid 1.11.1
Emulsion:
raw material name example 1 example 2
Body resin 30.931.9
Acrylic resin 34111.610.6
Acetic acid (20%) 0.90.9
OP-10（20%） 1.1 1.0
Alkyl imidazolines 0.80.9
Deionized water 54.754.7
Black paste: (formulation four)
Raw material name example 1 example 2
Body resin 17.518.5
Acrylic resin 3414.45.4
Diethylene glycol butyl ether 4.44.4
EFKA FA4620 1.5 1.5
Acetic acid (20%) 2.92.9
Carbon black 5.35.3
Kaolin Z862626
EW paste (3%) 1.52
Deionized water 36.537
Wherein the raw materials are as follows:
1 isocyanate: toluene diisocyanate (preferred), diphenylmethane diisocyanate
2, catalyst: dibutyl tin dilaurate (preferred), bismuth methanesulfonate
3, sealing agent: ethylene glycol Ether (first choice), Methylone Oxime
4 polyether resin: polyether 330n (preferred), polyether 3050
5 epoxy resin 601 (preferred), 604 (preferred), 801 resin
6 acrylic resin: 341 resin (first choice), SC370 resin, 7141 resin
7 cosolvent: propylene glycol methyl ether (preferred), propylene glycol ethyl ether (preferred), ethylene glycol butyl ether (preferred), diethylene glycol butyl ether (preferred), isopropanol, n-butanol,
8 amine hardener: triethanolamine (preferred), diethanolamine (preferred), diethylamine
9 ketimine: BS-8155 epoxy hardener (Fuzhou Baisheng, first choice)
DJ2425 epoxy hardener (Shandongdyuan)
10 pH value regulator: acetic acid (preferred), lactic acid
11, emulsifier: alkyl imidazoline (preferred), OP-10 (preferred), and phenethyl phenol polyoxyethylene ether
12, dispersing agent: EFKA FA4620 (preferred), EFKA 4550, EFKA 4650
13 pigment: carbon black (Tianjin Dagang hard, first choice), carbon black (DP)
14, filler: kaolin (preferred), talcum powder and barium sulfate
15 anti-settling agent: bentonite paste (EW 3%, preferred), anti-dust wax (630-SV)
The preparation method comprises the following steps:
a crosslinking agent:
adding 1 and 2 in the formula I into a No. 1 reaction kettle in sequence, starting stirring, stirring for 10 minutes at 900 revolutions per minute, and uniformly dispersing.
② adding the first formula 3 into another dripping tank, slowly dripping into a No. 1 reaction kettle while stirring, cooling the temperature to be within 50-70 ℃, and keeping the temperature at 70 +/-2 ℃ for 1 hour after finishing dripping.
Thirdly, sampling from the reaction kettle No. 1, and determining the NCO value by a di-n-butylamine method, wherein the NCO value is qualified when being 4-10.
Fourthly, after the NCO value is qualified, adding 4 in the formula I into a No. 1 reaction kettle, controlling the temperature at 90 +/-2 ℃, and stirring for 2 hours at 900 revolutions per minute.
Sampling from the No. 1 reaction kettle, and determining the NCO value by a di-n-butylamine method, wherein the NCO value is qualified when being 0-4. And (5) standby.
Main resin:
adding 1 and 2 in the formula II into a No. 2 reaction kettle in sequence, heating to 90 +/-2 ℃, starting stirring, and stirring at 900 revolutions per minute until the resin is completely dissolved.
② adding 3 in the formula II into a No. 2 reaction kettle, controlling the temperature at 117 +/-2 ℃, and stirring for 1 hour.
And thirdly, adding the 4 and 5 in the formula II into a No. 2 reaction kettle, controlling the temperature to be 117 +/-2 ℃, and stirring for 1 hour.
Fourthly, the pH value is adjusted by 6 in the second formula and is controlled to be 6 to 6.2, the temperature is controlled to be 80 +/-2 ℃, and the mixture is stirred uniformly.
Emulsion:
adding 1,2, 3 (1/2 amount) and 4 in formula III into a batching basin in sequence, starting stirring, stirring at 900 rpm for half an hour, uniformly dispersing, and preparing into premix for later use.
And secondly, adding 5 of the formula III into an emulsifying tank, starting stirring, slowly adding the premix I at 600 revolutions per minute, and continuing stirring for 1 hour after the addition is finished.
Regulating the pH value with 3 (1/2 amount), controlling the pH value to be 5.7-6.0, regulating the solid content to 35 +/-2% with a proper amount of deionized water after the pH value is qualified, and preparing the electrophoretic paint emulsion.
Black paste
Adding 1,2, 3, 4 and 5 in the formula IV into a material mixing basin in sequence, starting stirring, and uniformly stirring at 900 revolutions per minute.
Secondly, 6, 7 and 8 of the fourth formula are added into a material mixing basin under the stirring of 900 revolutions per minute, and 9 (2/3) of the fourth formula can be gradually added to adjust the viscosity of the paint paste.
③ stirring the paint slurry for half an hour under the stirring of 900 revolutions per minute.
And fourthly, sanding and grinding the lacquer pulp (III) until the fineness is less than 15 mu m, wherein the lacquer pulp is qualified.
Regulating the solid content of the color paste by using 9 (1/3) in the fourth formula, and controlling the solid content to be 48 +/-2 percent to prepare the electrophoretic paint color paste.
Example 2
Construction application example
The weather-resistant electrophoretic paint color paste, the emulsion and the deionized water are mixed according to the proportion of 1: 4: 5, preparing the mixture into an electrophoresis tank, and uniformly circulating. And completely immersing the phosphated automobile parts into an electrophoresis tank, connecting a power supply cathode and an anode on an anode plate, and electrifying for 240 volts for 3 minutes. And after electrophoresis, moving the workpiece to a washing area, washing the floating paint with deionized water, draining the liquid, drying for 30min at the temperature of 180 ℃ after drying.
Comparison data of the long-acting aging-resistant cathode electrophoretic paint and the conventional electrophoretic paint:
and (4) conclusion:
(1) the invention has good coating stability, the obtained paint film is flat and smooth, and the paint film performance can reach the technical index of common electrophoretic paint.
(2) The invention has excellent aging resistance under the condition of slightly reducing the corrosion resistance.
(3) The invention is suitable for coating the frame or parts without middle surface coating and with higher requirements on corrosion resistance and aging resistance.
Claims (5)
1. The long-acting ageing-resistant cathode electrophoretic paint is characterized by comprising four parts of a cross-linking agent, a main resin, an emulsion and black slurry, wherein the four parts are
The cross-linking agent comprises the following components:
serial number raw material name and mass portion
1 isocyanate 35-45
2 catalyst 0.4-0.8
3 sealant 35-45
4 polyether resin 15-25
The main resin has the following components:
serial number raw material name and mass portion
1 epoxy resin 30-40
2 auxiliary solvent 15-25
3-6 amine hardeners
4-ketimine 10-20
5 crosslinking agent 20-30
6 PH value regulator 1-2
The composition of the emulsion was as follows:
serial number raw material name and mass portion
1 Main body resin 20-40
2 acrylic resin 10-15
3 PH value regulator 0.5-1.5
4 emulsifier 1-2
5 deionized water 50-60
The black paste comprises the following components:
serial number raw material name and mass portion
1 Main body resin 10-20
2 acrylic resin 2-6
3 auxiliary solvent 2-6
4 dispersant 1-2
5 PH value regulator 2-4
6 pigments 3 to 9
7 filler 20-30
8 dust-proof agent 1-2
9 deionized water 30-40.
2. The long-acting aging-resistant cathode electrophoretic paint as claimed in claim 1, which is composed of four parts of a cross-linking agent, a host resin, an emulsion and black slurry, wherein
The cross-linking agent comprises the following components:
serial number raw material name and mass portion
1 isocyanate 40
2 catalyst 0.5
3 blocking agent 40
4 polyether resin 19.5
The main resin has the following components:
serial number raw material name and mass portion
1 epoxy resin 37.9
2 Co-solvent 20.3
3 amine hardeners 3.4
4 Ketimine 11.4
5 crosslinking agent 25.9
6 pH regulator 1.1
The composition of the emulsion was as follows:
serial number raw material name and mass portion
1 Main body resin 30.9
2 acrylic resin 11.6
3 pH regulator 0.9
4 emulsifier 1.9
5 deionized Water 54.7
The black paste comprises the following components:
serial number raw material name and mass portion
1 bulk resin 17.5
2 acrylic resin 4.4
3 Co-solvent 4.4
4 dispersant 1.5
5 pH regulator 2.9
6 pigments 5.3
7 Filler 26.0
8 dust-proofing agent 1.5
9 deionized water 36.5.
3. The long-acting aging-resistant cathodic electrophoretic paint according to claims 1-2, wherein the raw materials are:
isocyanate: toluene diisocyanate or diphenylmethane diisocyanate
Catalyst: dibutyl tin dilaurate or bismuth methanesulfonate
A sealing agent: ethylene glycol ethyl ether or methyl ethyl ketoxime
Polyether resin: polyether 330n or polyether 3050
Epoxy resin 601 resin, 604 resin or 801 resin
Acrylic resin: 341 resin, SC370 resin or 7141 resin
Cosolvent: propylene glycol methyl ether, propylene glycol ethyl ether, ethylene glycol butyl ether, diethylene glycol butyl ether, isopropanol or n-butanol,
amine hardener: triethanolamine, diethanolamine or diethylamine
Ketimine: BS-8155 epoxy hardener;
DJ2425 epoxy curing agent
pH value regulator: acetic acid or lactic acid
Emulsifier: alkylimidazolines, OP-10 or phenethylphenol polyoxyethylene ethers
Dispersing agent: EFKA FA4620, EFKA 4550 or EFKA 4650
Pigment: carbon black or carbon black (DP)
Filling: kaolin, talc or barium sulfate
Anti-settling agent: bentonite paste or dust wax.
4. Use of the long-acting, aging-resistant cathodic electrophoretic paint according to claims 1-2 for the coating of automotive frames and other parts.
5. Use of the long-acting aging-resistant cathodic electrophoretic paint according to claims 1-2 for improving the aging resistance of automotive frames and other parts.
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| CN202011472709.3A CN112521794A (en) | 2020-12-15 | 2020-12-15 | Long-acting aging-resistant cathode electrophoretic paint and application thereof |
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| CN202011472709.3A CN112521794A (en) | 2020-12-15 | 2020-12-15 | Long-acting aging-resistant cathode electrophoretic paint and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113736343A (en) * | 2021-09-23 | 2021-12-03 | 枣阳市旺前电泳涂料有限公司 | Synthesis method of corrosion-resistant cathode electrophoretic coating |
| CN114106633A (en) * | 2021-11-26 | 2022-03-01 | 广州优达涂料有限公司 | Infrared reflection color paste and preparation method thereof, infrared reflection electrophoretic paint and application thereof |
| CN115011199A (en) * | 2022-05-20 | 2022-09-06 | 上海金力泰化工股份有限公司 | Anti-aging cathode electrophoretic paint and preparation method and application thereof |
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| JP2009138126A (en) * | 2007-12-07 | 2009-06-25 | Nippon Paint Co Ltd | Cationic electrodeposition coating material composition and its producing method |
| CN106497340A (en) * | 2016-12-05 | 2017-03-15 | 天津科瑞达涂料化工有限公司 | A kind of energy-saving low-temperature cathode electrodip painting and preparation method and application |
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| JP2009138126A (en) * | 2007-12-07 | 2009-06-25 | Nippon Paint Co Ltd | Cationic electrodeposition coating material composition and its producing method |
| CN106497340A (en) * | 2016-12-05 | 2017-03-15 | 天津科瑞达涂料化工有限公司 | A kind of energy-saving low-temperature cathode electrodip painting and preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113736343A (en) * | 2021-09-23 | 2021-12-03 | 枣阳市旺前电泳涂料有限公司 | Synthesis method of corrosion-resistant cathode electrophoretic coating |
| CN114106633A (en) * | 2021-11-26 | 2022-03-01 | 广州优达涂料有限公司 | Infrared reflection color paste and preparation method thereof, infrared reflection electrophoretic paint and application thereof |
| CN114106633B (en) * | 2021-11-26 | 2023-12-22 | 广州优达涂料有限公司 | Infrared reflection color paste, preparation method and infrared reflection electrophoretic paint and application thereof |
| CN115011199A (en) * | 2022-05-20 | 2022-09-06 | 上海金力泰化工股份有限公司 | Anti-aging cathode electrophoretic paint and preparation method and application thereof |
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