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UV curing primer for vacuum coating and UV curing paint for vacuum coating

A vacuum coating and ultraviolet light technology, applied in the field of chemical coatings, can solve the problems of poor film-forming effect of primers, and achieve the effect of ensuring full curing and good working surface

Active Publication Date: 2016-06-08
HUNAN SOKAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a UV-curable primer for vacuum coating and a UV-curable paint for vacuum coating, so as to solve the problem of poor film-forming effect of primers coated on the surface of textured materials in the prior art

Method used

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  • UV curing primer for vacuum coating and UV curing paint for vacuum coating
  • UV curing primer for vacuum coating and UV curing paint for vacuum coating
  • UV curing primer for vacuum coating and UV curing paint for vacuum coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0049] The coating curing method of embodiment 1~7 finish paint, primer:

[0050] a) Spray the UV-curable primers in Examples 1 to 7 on the PC substrate with wire drawing after pretreatment, the coating film thickness is 1 μm, leveling under the irradiation of infrared lamp at 50°C for 5 minutes, 800mJ / cm 2 energy curing;

[0051] b) then vacuum coating;

[0052] c) Spray the UV-curable topcoat in Examples 1 to 7 on the vacuum coating, the coating film thickness is 20 μm, leveling under the irradiation of infrared lamp at 60°C for 7 minutes, and giving 1100mJ / cm 2 Energy hardened.

[0053] The pretreatment steps of the UV-curable primer in Examples 1 to 7 are:

[0054] a) Preheating the acrylic group-containing resin in the UV-curable primers of Examples 1-7 at 40-50° C. for 1-2 hours, and dissolving it with 2 / 3 volume of diluent to obtain the first solution;

[0055] b) Add the photoinitiator and adhesion promoting resin in the UV-curable primer of Examples 1-7 to the fir...

Embodiment 7

[0076] The difference from Example 6 is that the topcoat is prepared by mixing the topcoat formulation disclosed in CN201210332439.5, wherein the adhesion promoter is vinyl chloride-vinyl acetate copolymer containing hydroxyl groups. The photoinitiator in the primer is photoinitiator-184, and the adhesion promoting resin is a special polyester resin.

[0077] The parts by weight of each component of primer in Table 7 Comparative Example 1

[0078]

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PUM

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Abstract

The invention provides an ultraviolet light curing primer for vacuum coating and an ultraviolet light curing paint for vacuum coating. Resin, 10-15 parts by weight of pentaerythritol tetramercaptoacetate, 1-2 parts by weight of adhesion promoting resin, 2-5 parts by weight of photoinitiator, and 25-60 parts by weight of diluent. The UV-curable primer for vacuum coating provided by the present invention can avoid UV curing when only a primer layer with a thickness of 0.5-3 microns is formed on the surface of the material by adding pentaerythritol tetramercaptoacetate. The negative effect of the oxygen inhibition polymerization of the primer ensures that the surface of the primer coating is fully cured and provides a good working surface for the subsequent vacuum coating.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to an ultraviolet curing primer for vacuum coating and an ultraviolet curing paint for vacuum coating. Background technique [0002] Vacuum coating technology is to use physical and chemical means to coat the solid surface with a layer of coating with special properties, so that the solid surface is wear-resistant, high-temperature resistant, corrosion-resistant, anti-oxidation, radiation-proof, conductive, magnetic, insulating and decorative. And other performance has been strengthened and improved. The general method of vacuum coating is to spray a layer of primer on the material first, then do electroplating, and then paint. If the vacuum coating is carried out directly on the surface of the material, because the surface of the material is not smooth enough, the surface of the workpiece after electroplating will be rough, the gloss will be low, the metallic feeling wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D183/07C09D7/12
Inventor 缪培凯
Owner HUNAN SOKAN NEW MATERIAL
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