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Coating for LDS (Laser Direct Structuring) plastic component and preparation technology thereof

A technology of plastic workpiece and preparation process, applied in the direction of polyurea/polyurethane coating, coating, device for coating liquid on the surface, etc., to achieve good adhesion, good appearance and functionality, and good matching effects

Active Publication Date: 2013-04-03
卡秀万辉(无锡)高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology cannot have adhesion and shielding properties on both plastic and metal at the same time

Method used

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  • Coating for LDS (Laser Direct Structuring) plastic component and preparation technology thereof
  • Coating for LDS (Laser Direct Structuring) plastic component and preparation technology thereof
  • Coating for LDS (Laser Direct Structuring) plastic component and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example prepares primer A1:

[0026] (1) Put 11.5 parts of ethyl acetate, 5 parts of toluene and 30 parts of ACRYLIC ZHP-189 polyurethane acrylic resin into the reaction tank and mix them at a speed of 200 rpm for 10 minutes to obtain a premix;

[0027] (2) Add 0.5 parts of BYK-358N polyether modified acrylic leveling agent, 1 part of BYK-163 wetting and dispersing agent, 2 parts of Bayer's HMP polyester adhesion promoter, and Ishihara titanium dioxide CR902 to the premix 20 parts, 20 parts of 10000 mesh talcum powder were stirred at a high speed for 35 minutes at a speed of 500 rpm, and finally 10 parts of ethyl acetate were added, and stirring was continued at a speed of 4500 rpm for 8 minutes;

[0028] (3) Grind the mixture obtained in step (2) 4 times with a blue sand machine, check that the fineness is less than 25 microns (test tool fineness plate 0~100 microns), adjust the mixture measured by KU viscometer The viscosity is 200~250GM, and the temperature con...

Embodiment 2

[0030] This example prepares primer A2:

[0031] (1) Put 10 parts of butyl ester, 12.8 parts of xylene and 45 parts of ACRYLIC ZHP-189 polyurethane acrylic resin into the reaction tank and mix them at a speed of 300 rpm for 5 minutes to obtain a premix;

[0032] (2) Add 0.2 parts of BYK-358N polyether modified acrylic leveling agent, 3 parts of BYK-163 wetting and dispersing agent, 2 parts of BYK-4510 polyester adhesion promoter, Degussa FW to the premix 4 parts of 200 carbon black, 10000 mesh talcum powder 18 high-speed stirring at 800 rpm for 30 minutes, adding 5 parts of butyl ester, and continuing to stir at 300 rpm for 10 minutes;

[0033] (3) Grind the mixture obtained in step (2) 6 times with a blue sand machine, check that the fineness is less than 25 microns (test tool fineness plate 0~100 microns), adjust the mixture measured by KU viscometer The viscosity is 200~250GM, and the temperature condition for testing the viscosity is 25±2°C; the temperature during the san...

Embodiment 3

[0035] This example prepares primer B:

[0036] (1) Put 8.8 parts of butyl acetate, 5 parts of trimethylbenzene and 50 parts of A665BA polyurethane acrylic resin into the reaction tank for mixing, and stir at a speed of 250 rpm for 8 minutes to obtain a premix;

[0037] (2) Add 0.2 parts of BYK-358N polyether modified acrylic leveling agent, 1 part of BYK-163 wetting and dispersing agent, 2 parts of Lubrizol 2063 polyester adhesion promoter, and Ishihara titanium dioxide to the premix 20 parts of CR902, 18 parts of talc powder of 10000 mesh, high-speed stirring at 1200 rpm for 30 minutes, adding 5 parts of butyl acetate, and continuing to stir at 500 rpm for 5 minutes;

[0038] (3) Grind the mixture obtained in step (2) for 3 times with a blue sand machine, check that the fineness is less than 25 microns (test tool fineness plate 0~100 microns), adjust the mixture measured by KU viscometer The viscosity is 200~250GM, and the temperature condition for testing the viscosity is ...

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Abstract

The invention provides a coating for an LDS (Laser Direct Structuring) plastic component. The coating includes two coatings, namely, a primer A and a primer B which comprise the raw materials composed of the following components in parts by weight: 30 to 60 parts of resin, 2 to 4 parts of carbon black or 15 to 20 parts of titanium dioxide, 0.2 to 0.5 part of crylic acid flatting agent, 1 to 3 parts of wetting dispersant, 1 to 2 parts of adhesion promoter, 10 to 20 parts of talcum powder, 10 to 30 parts of esters solvent, and 5 to 15 parts of benzene solvent. The coating can be sprayed to form a plurality of films with thickness up to 150 microns, and steps on plastic and metal films of a formed component can be filled and covered, thus nice appearance can be brought, and the requirement of performances can be met.

Description

technical field [0001] The invention relates to the technical field of acrylic paint, in particular to a design and production method of a two-component polyurethane acrylic paint used on LDS plastic workpieces. Background technique [0002] With the emergence of the first 4G LTE devices in 2011, a new technology—Laser-Direct-Structuring (LDS) manufacturing technology is increasingly used in the antenna design of mobile phones, especially smartphones and manufacturing. At present, the LDS process mainly electroplates Cu / Ni, Ag, Au and other metal particles on PC, PA+GF plastic workpieces, and the plastic and metal coatings of the molded workpieces have 12-15 micron steps, so it is suitable for the appearance effect and Protective functional coatings put forward higher requirements. The prior art cannot simultaneously have adhesion and shielding properties on plastics and metals. Contents of the invention [0003] In view of the above-mentioned problems in the prior art,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12B05D1/36
Inventor 朱永国
Owner 卡秀万辉(无锡)高新材料有限公司
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