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A kind of uv topcoat backspray water and its preparation method and application

A technology of topcoat and constant temperature water bath, applied in the direction of coating, etc., can solve the problems of material waste, low surface tension of UV paint coating film, increase production cost, etc., and achieve the effect of reducing cost, improving competitiveness and reducing waste

Active Publication Date: 2016-08-24
NANJING HUAGE ELECTRONICS & AUTOMOBILE PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, after spraying UV paint on 3C products, some products become unqualified products due to surface defects. Because the surface tension of UV paint film is small, there is no paint on the market that can produce firm adhesion on the surface of UV paint.
Therefore, spraying other coatings on products that have been sprayed with UV paint can easily lead to the generation of many substandard products, resulting in waste of materials and increased production costs.

Method used

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  • A kind of uv topcoat backspray water and its preparation method and application
  • A kind of uv topcoat backspray water and its preparation method and application
  • A kind of uv topcoat backspray water and its preparation method and application

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Experimental program
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Effect test

preparation example Construction

[0022] The preparation method of this backspray water comprises the following steps:

[0023] (1) Add 5-7% hydroxyethyl methacrylate and 1-3% inhibitor p-methoxyphenol into the flask, put the flask into a super constant temperature water bath, stir Heating evenly to 55-60°C and keeping it warm for 1-1.5 hours;

[0024] (2) 1-3% P2O5 is added to the flask described in step (1) in four times to form a mixed solution;

[0025] (3) continue to heat up the mixed solution in the flask described in step 2) to 80~85° C. and then insulate it; then add the silane coupling agent KH-550, 3-4% Si ( OCH2CH3)4 and 2-3% DMF, continue to react for 2.5~3h, in the later stage of the reaction, the degree of progress of the reaction is shown according to the acid value of the tracking test, and the light yellow viscous liquid generated at last is the adhesion promoter, and the adhesion promoter The acid value is 300-320;

[0026] (4) adding 10% of the adhesion promoter generated in the step (3)...

Embodiment VA96

[0033] The backspray of embodiment VA96 product

[0034] The respray process steps of VA96 products are as follows:

[0035] (1), Grinding defective products, (2), Wiping, (3), Fixtures,

[0036] (4), painting back-spray water upper parts, (5), painting back-spray water brush dust, (6), electrostatic dust removal 1,

[0037] (7), electrostatic precipitator 2, (8), spray water back, (9), back spray baking,

[0038] (10), primer adjustment, (11), primer brush dust, (12), electrostatic dust removal 1,

[0039] (13), electrostatic precipitator 2, (14), spray primer, (15), primer baking,

[0040] (16), finish paint brush dust, (17), electrostatic precipitator 1, (18), electrostatic precipitator 2,

[0041] (19), adjusting topcoat, (20), spraying topcoat, (21), topcoat according to UV,

[0042] (22), bottom paint part, (23), packing.

[0043] The following is the comparison table before and after the use of this respray water:

[0044]

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Abstract

The invention discloses UV (ultraviolet) finish paint back-spraying water. The UV finish paint back-spraying water is prepared from the following raw materials in percentage by mass: 1-3% of P2O5, 5-7% of hydroxyethyl methylacrylate, 1-3% of p-methoxyphenol, 75-85% of hydroxyethyl acrylate, 3-4% of a silane coupling agent KH-550, 3-4% of Si (OCH2CH3)4 and 2-3% of DMF. By virtue of the UV finish paint back-spraying water disclosed by the invention, defective products are coated again after being polished, thus obtaining products with excellent appearance and performances, defects caused by a coating process are effectively reduced and the yield of products is increased, and the waste of materials is reduced, so that the advantages of the produced products are determined, the cost is lowered, the corporate profit is increased, the competitive power of enterprises is greatly improved, and thus, the enterprises are in an invincible position.

Description

technical field [0001] The invention mainly relates to the technical field of coatings, in particular to a UV topcoat backspray water and its preparation method and application. Background technique [0002] At present, after spraying UV paint on 3C products, some products become unqualified products due to surface defects. Because the surface tension of UV paint film is small, there is no paint on the market that can produce firm adhesion on the surface of UV paint. Therefore, spraying other coatings on products sprayed with UV paint can easily lead to the generation of many substandard products, resulting in waste of materials and increased production costs. How to improve the adhesion of coatings on products after UV paint, improve product quality, reduce waste and reduce costs is imperative. Contents of the invention [0003] In view of the defects in the above-mentioned prior art, the purpose of the present invention is to propose a UV finish spraying water with exce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02C09D7/12
Inventor 仇远生郭中哲徐国忠张亚文张晓琳雷蕾胡前笙
Owner NANJING HUAGE ELECTRONICS & AUTOMOBILE PLASTIC IND