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A kind of automobile water-based intermediate coating and preparation method thereof

A water-based, automotive technology, applied in the field of coatings, which can solve problems such as patented technology or lack of technical documents

Inactive Publication Date: 2018-05-22
SHANGHAI DAZHONG ALLIED AUTO REFITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of science and technology, in the supporting coating of the automobile body, the primer has been completely water-based. Although the intermediate coating has begun to be water-based, there are still few related patent technologies or technical documents on the water-based intermediate coating.

Method used

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  • A kind of automobile water-based intermediate coating and preparation method thereof
  • A kind of automobile water-based intermediate coating and preparation method thereof
  • A kind of automobile water-based intermediate coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A water-based intermediate coating for automobiles, which includes component A and component B, wherein component A includes: 20% water-based polyester resin, 25% water-based epoxy resin, 20% water-soluble pigment, Talc powder 3%, calcium carbonate 15%, water-based polyurethane defoamer 0.1%, water-based methyl etherified amino resin 0.4%, fumed silica anti-settling agent 0.2%, leveling agent 0.2%, wetting agent 0.7%, anti-settling agent Flash rust agent 1.2%, deionized water 14.2%; B component is a blocked water-based isocyanate curing agent; the weight ratio of A component and B component is 11:1.

[0027] Wherein, in the water-based polyester resin, according to parts by weight, including:

[0028]

[0029] Among them, the leveling agent is BYK-333, the wetting agent is BYK-345, and the anti-flash rust agent is COR V 609B.

[0030] The preparation method of the above-mentioned automobile water-based intermediate coating is: in the feed tank under the protection o...

Embodiment 2

[0033] A water-based intermediate coating for automobiles, which includes component A and component B, wherein component A includes: 25% water-based polyester resin, 30% water-based epoxy resin, 15% water-soluble pigment, Talc powder 5%, calcium carbonate 18%, water-based polyurethane defoamer 0.2%, water-based methyl etherified amino resin 0.5%, fumed silica anti-settling agent 0.3%, leveling agent 0.4%, wetting agent 1%, anti-settling agent Flash rust agent 1%, deionized water 3.6%; B component is a blocked water-based isocyanate curing agent; the weight ratio of A component and B component is 13:1.

[0034] Wherein, in the water-based polyester resin, according to parts by weight, including:

[0035]

[0036] Among them, the leveling agent is BYK-333, the wetting agent is BYK-348, and the anti-flash rust agent is CORB.

[0037] The preparation method of the above-mentioned automobile water-based intermediate coating is: in the feed tank under the protection of nitrogen,...

Embodiment 3

[0040] A water-based intermediate coating for automobiles, which includes component A and component B, wherein component A includes: 30% water-based polyester resin, 30% water-based epoxy resin, 15% water-soluble pigment, Talc powder 3%, calcium carbonate 15%, water-based polyurethane defoamer 0.2%, water-based methyl etherified amino resin 0.5%, fumed silica anti-settling agent 0.5%, leveling agent 0.4%, wetting agent 1%, anti-settling agent Flash rust agent 1.5%, deionized water 0.7%; B component is a blocked water-based isocyanate curing agent; the weight ratio of A component and B component is 14:1.

[0041] Wherein, in the water-based polyester resin, according to parts by weight, including:

[0042]

[0043] Among them, the leveling agent is BYK-420, the wetting agent is BYK-345, and the anti-flash rust agent is CORB.

[0044] The preparation method of the above-mentioned automobile water-based intermediate coating is: in the feed tank under the protection of nitrogen,...

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Abstract

The invention discloses an automotive waterborne floating-coat coating and a preparation method thereof. The automotive waterborne floating-coat coating is characterized by comprising a component A and a component B, wherein the component A comprises the following components in percentage by weight: 15%-35% of polyester resin, 25%-35% of epoxy resin, 15%-25% of a pigment, 3%-5% of talcum powder, 15%-25% of calcium carbonate, 0.1%-0.5% of a polyurethane defoaming agent, 0.3%-0.8% of etherified amino resin, 0.1%-0.5% of a fumed silica anti-settling agent, 0.1%-0.5% of a flatting agent, 0.5%-1.5% of a wetting agent, 1%-2% of a flash-rust inhibitor and the balance of deionized water; and the component B is a closed waterborne isocyanate curing agent. After an electro-deposition coating plate is coated with the automotive waterborne floating-coat coating and dried, a paint film presents an excellent smooth form, a paint film stripping phenomenon is not observed during adhesiveness testing of the paint film, and the hardness, tested by virtue of a pencil scratch hardness method, of the paint film is an level F or above.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an automotive water-based intermediate coating and a preparation method thereof. Background technique [0002] Typical supporting coatings for automotive bodies include electrocoats, intermediate coats, base coats and clear coats. Intermediate coating, also known as surfacer, is a coating used between the automotive primer and topcoat. Its main function is to further fill and correct the primer-coated work surface and improve its flatness, so that the freshness of the topcoat can be improved. Reflection, fullness, gloss, etc. have been greatly improved. [0003] At present, in the supporting coatings of automobile bodies, water-based coatings have become an inevitable development trend. Compared with solvent-based coatings, water-based coatings can greatly reduce the use of volatile organic compounds, which can not only reduce environmental impact Pollution can also reduce the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D175/06C08G63/12
CPCC08G63/12C09D7/61C09D175/04C09D175/06C08L75/06C08L75/04C08L61/32C08K13/02C08K3/34C08K2003/265C08K3/36
Inventor 邢博邬奕申高峰徐东东张欢
Owner SHANGHAI DAZHONG ALLIED AUTO REFITTING
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