Ultraviolet-cured coating composition and mobile phone key

A technology for curing coatings and compositions, applied in the direction of polyurea/polyurethane coatings, coatings, etc., which can solve the problems of poor substrate adhesion, poor storage performance, unsatisfactory coating wear resistance, scratch resistance, etc. Achieve the effects of strong wetting performance, improved storage performance, and good anti-scratch ability

Active Publication Date: 2013-01-02
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the poor adhesion and storage performance of the UV-curable coating composition containing pigments to the substrate in the prior art, and at the same time, the prepared coating has unsatisfactory properties such as wear resistance and scratch resistance, which cannot meet the existing requirements. technical requirements

Method used

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  • Ultraviolet-cured coating composition and mobile phone key
  • Ultraviolet-cured coating composition and mobile phone key
  • Ultraviolet-cured coating composition and mobile phone key

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] In the preparation method of the ultraviolet curing coating of the present invention, the main resin, the diluent, the pigment and the photoinitiator can be mixed simultaneously or step by step. In a preferred situation, the pigment can be added to the aromatic acid acrylate half ester first, and dispersed using a ball mill, high-speed disperser or three-roll mill; and then the remaining main resin, photoinitiator, and part of the diluent are mixed with the above-mentioned pigment dispersion system ;Finally add the remaining diluent and mix well. The above mixing is usually carried out at normal temperature, and if necessary, it can be slightly heated to 30-60°C to speed up the mixing. In this preferred method, there is no special requirement on the amount of each part of the diluent, as long as the components are fully dissolved or diluted.

[0025] If one or more of additives such as leveling agent, defoamer, and dispersant are added to the paint, the above preparati...

Embodiment 1

[0032] 1) Coating composition

[0033]

[0034] 2) mixed

[0035] a. Stir the aromatic acid methacrylate half ester under the disperser, add BYK-168 during the stirring process, then mix in the pigment 1 carbon black and 1 / 2 of the acrylic monomer, and grind it with a three-roll mill until the fineness is Below 10 microns.

[0036] b. Add urethane acrylate, additives, and photoinitiators to the material obtained in step a, and disperse evenly with a high-speed disperser at about 2000r / min.

[0037] c. Prepare the solvent according to the proportion and mix well.

[0038] d. Mix the substance obtained in step b with the solvent obtained in step c, add pigment 2 pearl powder, and disperse at a high speed of about 1500r / min until uniform.

[0039] 3) Preparation of mobile phone buttons

[0040] a. Take the 500-frame PC button, install the fixture, use a clean dust-free cloth dipped in alcohol or white electric oil to wipe, and wash off the dirt and release agent.

[0041]...

Embodiment 2-7

[0047] The same method as in Example 1 was used to mix the coating composition and prepare the keypad of the mobile phone, except for the coating composition, as shown in Table 1.

[0048] Table 1

[0049]

[0050]

[0051]

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Abstract

The invention provides an ultraviolet-cured coating composition, which comprises a main body resin, a diluting agent, a pigment and a photo-initiator, and comprises or does not comprise an auxiliary agent, wherein the main body resin comprises aromatic acid methacrylate half ester and aliphatic polyurethane acrylic ester. A coating layer prepared for the coating composition has ultra-high abrasion resistance, high hardness, strong scratch resistance, strong adhesion force and excellent storable performance, can direct contact the surface of a base material, and simultaneously has a bright color decorative effect, and accords with development requirements of the prior art. The invention simultaneously provides a mobile phone key of which the coating layer is prepared from the coating material; the mobile phone key can be directly coated with one coating layer and then is engraved without using a bottom coating layer and a surface coating layer; and the coating layer is simple and easy to realize.

Description

technical field [0001] The invention relates to an ultraviolet light curing coating composition and a mobile phone key. Background technique [0002] UV-curable coating is an environmentally friendly and energy-saving coating developed in the 1960s. It can be cured quickly under ultraviolet light. It not only has a fast curing speed, but also saves energy compared with heat-cured coatings, which has obvious advantages. At present, it is not only widely used in wood, metal, plastic, paper, leather, but also successfully applied in optical fiber, printed circuit board, electronic component packaging and other materials. [0003] For example, the coating of the existing mobile phone keyboard generally includes a color paint layer (pattern layer) and a surface transparent paint (protective layer). Most mobile phone keyboards use polycarbonate plastic as the substrate. When spraying, thermoplastic acrylic resin is generally used as the color paint layer, and then a layer of UV-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14
Inventor 崔玉环黄小萍牟靖文
Owner BYD CO LTD
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