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Epoxy primer and preparation method thereof

An epoxy primer and epoxy resin technology, applied in epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of cracking, rust, and peeling of coatings, and achieve the core of improving the market. Competitiveness, saving time and labor costs, improving finish life

Inactive Publication Date: 2009-10-28
谢平展
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, to paint the appearance of automobiles, it is usually to use ordinary antirust paint (red lead) on the interior and exterior parts of the automobile, and then spray a layer of intermediate coating topcoat. The disadvantages are: 1. After using for a period of time , prone to rust; 2. The coating is prone to cracks, peeling, peeling, loss of light, discoloration, etc. within one to two years in the ordinary environment;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add epoxy primer material before coating product molding, described epoxy primer material is mainly made up of following three kinds of components by weight percentage:

[0017] Titanium dioxide 40%

[0018] Polymer epoxy resin 40%

[0019] Cyclohexanone solvent 20%

[0020] The preparation method of this epoxy primer is:

[0021] (1) Disperse and grind titanium dioxide to make it reach a fineness within 20um;

[0022] (2) Mix titanium dioxide with a fineness of less than 20um and high-molecular epoxy resin evenly, add cyclohexanone solvent, and then disperse at a high speed to obtain an epoxy primer.

[0023] (3) Add the epoxy primer material to the coating product before molding, and mix evenly, which is the epoxy primer of the present invention.

[0024] The outstanding effects of this embodiment are: the production process is simple and the adhesion is extremely strong.

Embodiment 2

[0026] Add epoxy primer material before coating product molding, described epoxy primer material is mainly made up of following three kinds of components by weight percentage:

[0027] Titanium dioxide 60%

[0028] Polymer epoxy resin 30%

[0029] Cyclohexanone solvent 10%

[0030] The preparation method of this epoxy primer is:

[0031] (1) Disperse and grind titanium dioxide to make it reach a fineness within 20um;

[0032] (2) Mix titanium dioxide with a fineness of less than 20um and high-molecular epoxy resin evenly, add cyclohexanone solvent, and then disperse at a high speed to obtain this product.

[0033] The outstanding effects of this embodiment are: low viscosity, high solid content, and good weather resistance.

Embodiment 3

[0035] As the best embodiment of the present invention, add epoxy primer material before coating product moulding, described epoxy primer material mainly is made up of following three kinds of components by weight percentage:

[0036] Titanium dioxide 50%

[0037] Polymer epoxy resin 35%

[0038] Cyclohexanone solvent 15%

[0039] The preparation method of this epoxy primer is:

[0040] (1) Disperse and grind titanium dioxide to make it reach a fineness within 20um;

[0041] (2) Mix titanium dioxide with a fineness of less than 20um and high-molecular epoxy resin evenly, add cyclohexanone solvent, and then disperse at a high speed to obtain an epoxy primer.

[0042] (3) Add the epoxy primer material to the coating product before molding, and mix evenly, which is the epoxy primer of the present invention.

[0043] The outstanding effects of this embodiment are: low viscosity, high solid content, good weather resistance, and strong adhesion.

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Abstract

The invention discloses an epoxy primer used for the appearance coating decoration of an automobile and a preparation method thereof. Before a coating product is formed, an epoxy primer material mainly including titanium dioxide, high-molecule epoxy resin and cyclohexanone solvent is added. The titanium dioxide is dispersed and ground until the fineness is within 20 microns, the titanium dioxide is uniformly mixed with the epoxy resin, the cyclohexanone solvent is added, and after high-speed dispersion, the epoxy primer material is obtained. The epoxy primer material is added into the coating product before formation to be uniformly mixed, and the epoxy primer is prepared. The product has the characteristics of high corrosion and rust resistance and strong adhering force, and the effect of the appearance coating decoration of an automobile can be obtained by coating once without coating an electrophoretic paint layer. Time and labor expenses are saved, no pollution exists, and the construction is simple, convenient and rapid to reduce the total cost and improve the market core competitiveness. The phenomena of cracking, skin tilting, disconnection, loss of gloss, color change, and the like of a workpiece coated by the epoxy primer can not be generated in ten years, and the service life of the coating decoration of the product is completely prolonged.

Description

Technical field [0001] The present invention relates to a kind of paint and its preparation method, more specifically, the present invention relates to a kind of epoxy primer for automobile coating and its preparation method. Background technique [0002] At present, to paint the appearance of automobiles, it is usually to use ordinary antirust paint (red lead) on the interior and exterior parts of the automobile, and then spray a layer of intermediate coating topcoat. The disadvantages are: 1. After using for a period of time , prone to rust; 2. The coating is prone to cracks, peeling, peeling, loss of light, discoloration, etc. within one to two years in the ordinary environment; . Contents of the invention [0003] In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide an epoxy primer and a preparation method thereof. The epoxy primer has extremely strong adhesion, high corrosion resistance and antirus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/12
Inventor 谢平展
Owner 谢平展