Drop-proof photocureable UV coating and preparation method thereof

A light-curing and coating technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of easy collision and cracking of the paint film, and achieve the effects of high reaction sufficiency, good composition uniformity and good toughness

Inactive Publication Date: 2017-05-31
东莞市惠尔明高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a drop-resistant photocurable UV coating. The drop-resistant photocurable UV coating of the present invention uses a variety of polyurethane acrylates with different functional groups as the main raw material. It overcomes the defect that the paint film is easy to collide and crack due to the unbalanced hardness and toughness of the UV paint caused by the repeated use of the same functional group polyurethane acrylate in the existing UV paint. The cohesion, toughness and hardness of the paint film obtained by the UV paint of the present invention The balance of the paint is good, and the obtained UV paint film is both wear-resistant and resistant to falling and cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A drop-resistant light-curing UV coating, consisting of the following raw materials in parts by weight: 15 parts of aliphatic difunctional urethane acrylate, 12 parts of aliphatic trifunctional urethane acrylate, 20 parts of aliphatic tetrafunctional urethane acrylate, aliphatic six 8 parts of functional group urethane acrylate, 2.3 parts of photoinitiator, 0.3 parts of leveling agent, 2 parts of matting agent, 5 parts of butyl acetate, and 5 parts of MEK butanone.

[0021] The photoinitiator is 184 photoinitiator and TPO photoinitiator, and the weight ratio of 184 photoinitiator and TPO photoinitiator is 4:1.

[0022] The matting agent is an organic matting agent.

[0023] The leveling agent is a mixture of a silicone leveling agent and a phosphate-modified acrylic leveling agent in a weight ratio of 1:2.

[0024] A method for preparing a drop-resistant photocurable UV coating, comprising the following steps: A. Weighing the raw materials in parts by weight of the for...

Embodiment 2

[0029] A drop-resistant photocurable UV coating, consisting of the following raw materials in parts by weight: 17 parts of aliphatic difunctional urethane acrylate, 13 parts of aliphatic trifunctional urethane acrylate, 22 parts of aliphatic tetrafunctional urethane acrylate, aliphatic hexafunctional 9 parts of functional group urethane acrylate, 2.6 parts of photoinitiator, 0.35 parts of leveling agent, 3 parts of matting agent, 7 parts of butyl acetate, and 6 parts of MEK butanone.

[0030] The photoinitiator is 184 photoinitiator and TPO photoinitiator, and the weight ratio of 184 photoinitiator and TPO photoinitiator is 5:1.

[0031] The matting agent is an organic matting agent.

[0032] The leveling agent is a mixture of a silicone leveling agent and a phosphate-modified acrylic leveling agent in a weight ratio of 1:2.2.

[0033]A method for preparing a drop-resistant photocurable UV coating, comprising the following steps: A. Weighing the raw materials in parts by weig...

Embodiment 3

[0038] A drop-resistant light-curing UV coating, consisting of the following raw materials in parts by weight: 18 parts of aliphatic difunctional urethane acrylate, 15 parts of aliphatic trifunctional urethane acrylate, 23 parts of aliphatic tetrafunctional urethane acrylate, aliphatic hexafunctional 10 parts of functional group urethane acrylate, 2.9 parts of photoinitiator, 0.4 parts of leveling agent, 4.5 parts of matting agent, 8 parts of butyl acetate, and 8 parts of MEK butanone.

[0039] The photoinitiator is 184 photoinitiator and TPO photoinitiator, and the weight ratio of 184 photoinitiator and TPO photoinitiator is 7:1.

[0040] The matting agent is an organic matting agent.

[0041] The leveling agent is a mixture of a silicone leveling agent and a phosphate-modified acrylic leveling agent in a weight ratio of 1:2.5.

[0042] A method for preparing a drop-resistant photocurable UV coating, comprising the following steps: A. Weighing the raw materials in parts by w...

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PUM

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Abstract

The invention relates to the technical field of UV coatings, in particular to a drop-proof photocureable UV coating and a preparation method thereof. The drop-proof photocureable UV coating comprises the following raw materials in parts by weight: 15-20 parts of aliphatic bifunctional polyurethane acrylate, 12-18 parts of aliphatic trifunctional polyurethane acrylate, 20-25 parts of aliphatic tetrafunctional polyurethane acrylate, 8-12 parts of aliphatic hexafunctional polyurethane acrylate, 2.3-3.5 parts of a photoinitiator, 0.3-0.5 part of a leveling agent, 2-7 parts of a delustering agent, 5-10 parts of n-butyl acetate and 5-10 parts of MEK (methyl ethyl ketone). According to the drop-proof photocureable UV coating, polyurethane acrylates of various different functional groups serve as raw materials for compounding, the defects that a paint film has high probability of cracking due to unbalanced hardness and tenacity of a conventional UV coating in which polyurethane acrylate of the same functional group is repeatedly used, and the obtained UV coating paint film is not only wear-resistant but also drop-proof and crack-resistant.

Description

technical field [0001] The invention relates to the technical field of UV coatings, in particular to a drop-resistant photocurable UV coating and a preparation method thereof. Background technique [0002] In people's daily life, mobile phones and tablet computers are accidentally dropped on the ground, and their shells are easy to crack, making it impossible to continue to use them normally. Due to the one-sided pursuit of hardness and high RCA tape wear times in the existing photocurable UV coatings, the shrinkage rate of the UV coatings after spraying is too large during the photocuring process. Under this condition, when the product is subjected to external force When impacted (such as when dropped to the ground), the product is easily cracked and damaged due to impact with the ground. The external parts of the product and the sprayed UV paint film are cracked together because the hardness of the photocured UV coating is high and the toughness of the paint film is too l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/14C09D7/80
CPCC09D175/14C08L2205/025C08L2205/035C09D7/80C08L75/14
Inventor 方震龙熊昌亮龙珍湖
Owner 东莞市惠尔明高分子材料科技有限公司
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