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Environment-friendly anticorrosive coating material for automobile parts and preparation method thereof

A technology for auto parts and anti-corrosion coatings, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of carcinogenicity, construction personnel and environmental hazards, harmfulness, etc., achieve low VOC emissions, excellent construction performance, Coating matching simple effect

Active Publication Date: 2014-07-23
中山大桥化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain a better anti-corrosion effect, chromium-containing anti-rust pigments are generally added to the paint, such as zinc yellow, chrome yellow, strontium yellow, zinc phosphochromate, etc. as anti-rust pigments. Metal chromium is harmful to the human body, especially hexavalent Chromium is carcinogenic, causing serious harm to construction personnel and the environment during the preparation, construction and use of the coating after film formation

Method used

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  • Environment-friendly anticorrosive coating material for automobile parts and preparation method thereof

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preparation example Construction

[0034] A preparation method for an anticorrosion coating for environment-friendly auto parts, comprising the following steps:

[0035] 1) Prepare component A:

[0036] Mix the epoxy resin, dispersant and defoamer with a formula amount of 60-80wt% evenly, then add anti-sagging agent and pigments and fillers, mix evenly, pre-disperse for 30-60 minutes under stirring at 500-1000rpm, and then add it to the sand In the mill, grind to a fineness of ≤15 μm, filter, add the remaining epoxy resin, leveling agent and solvent, stir evenly, and filter to obtain component A;

[0037] 2) Prepare Part B:

[0038] Add polyamide resin, siloxane compound, accelerator and solvent into the container in turn according to the formula amount, stir at 300-600 rpm for 30-60 minutes, filter to obtain component B;

[0039] 3) Mix component A and component B according to the ratio before use to obtain an environmentally friendly anticorrosion coating for auto parts;

[0040] The formula of the anticor...

Embodiment 1

[0044] An environment-friendly anticorrosion coating for auto parts, comprising a main agent of component A and a curing agent of component B, the formula of component A is as follows:

[0045] Material % by weight / %

[0046] DER671 24.0,

[0047] DER667 2.0,

[0048] Dispersant BYK ANTI-TERRA?-U 2.0,

[0049] Organic bentonite 0.5,

[0050] Fumed silica 0.5,

[0051] carbon black 2.5,

[0052] Zinc phosphate 10.5,

[0053] Aluminum tripolyphosphate 8.5,

[0054] Precipitated barium sulfate 23.0,

[0055] Defoamer BYK?-054 0.3,

[0056] Leveling agent BYK?-358 N 0.5,

[0057] Xylene 18,

[0058] butanol 7.7.

[0059] The formula of component B is as follows:

[0060] Material % by weight / %

[0061] Polyamide resin (amine value 155) 46.0,

[0062] DMP-30 3.0,

[0063] Aminopropyltriethoxysilane 3.0,

[0064] Xylene 38.0,

[0065] Butanol 10.0.

[0066] The preparation process of the coating is as follows:

[0067] 1) Prepare component A

[0068] First grind ...

Embodiment 2

[0073] An environment-friendly anticorrosion coating for auto parts, comprising A component and B component, and the formula of A component is as follows:

[0074] Material % by weight / %

[0075] Epikote834 22.0,

[0076] Epikote1009 5.0,

[0077] Dispersant DISPERBYK®-110 2.0,

[0078] Organic bentonite 0.5,

[0079] Fumed silica 0.5,

[0080] carbon black 2.5,

[0081] Rutile titanium dioxide 15.0,

[0082] Zinc phosphate 10.5,

[0083] Aluminum tripolyphosphate 8.5,

[0084] Precipitated Barium Sulfate 10.0,

[0085] Defoamer BYK?-052 0.3,

[0086] Leveling agent BYK?-320 0.5,

[0087] Xylene 16,

[0088] Butanol 6.7.

[0089] The formula of component B is as follows:

[0090] Material % by weight / %

[0091] Polyamide resin (amine value 180) 46.0,

[0092] Accelerator DMP-30 1.0,

[0093] N-aminoethyl-aminopropyltriethoxysilane 4.0,

[0094] Xylene 38.0,

[0095] Butanol 11.0.

[0096] The preparation process of the coating is as follows:

[0097] 1) Pre...

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Abstract

The invention discloses an environment-friendly anticorrosive coating material for automobile parts and a preparation method thereof. The environment-friendly anticorrosive coating material comprises an ingredient A and an ingredient B, wherein the ingredient A comprises epoxy resin, pigment / filler, auxiliaries and an organic solvent, and the ingredient B comprises polyamide resin, a siloxane compound, a tertiary amine curing accelerator and an organic solvent. According to the anticorrosive coating material disclosed by the invention, the construction solid content is high (not lower than 60wt%), the VOC (Volatile Organic Compound) emission is low during construction, and the construction performance and film coating property are excellent; the coating material can be applied to anticorrosive coating layers of automobile metal parts, such as transmission cases, chassis parts, axles and other castings, the coating supporting is simple, the requirements on substrate pretreatment are low, sandblasting and phosphating treatment are not required, and good film coating performance can be guaranteed by only cleaning and degreasing; and the environment-friendly anticorrosive coating material for the automobile parts, disclosed by the invention, is simple in preparation process and is energy-saving and environment-friendly, and the prepared product is stable in performance.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to an environment-friendly high-solid anti-corrosion coating suitable for coating auto parts and a preparation method thereof. Background technique [0002] The metal blanks of auto parts are mostly hot-rolled plates and castings, including gearboxes, chassis parts, axles and other castings. Before forming or painting, shot blasting or sandblasting is often used. Acid treatment has been gradually disuse. Chassis parts in developed countries generally adopt phosphating, cathodic electrophoresis or powder coating process. The large assembly is generally assembled after electrophoresis or powder coating on the part line, and the bottom surface or room temperature curing topcoat is sprayed on the assembly as required. . Due to the generally small scale of production, the coating of auto parts in my country is relatively backward in general, mainly reflected in the low level of technology a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
Inventor 胡志标周全张璇
Owner 中山大桥化工集团有限公司
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