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Preparation method of self-cleaning photocureable coating with low surface energy

A light-curing coating and low surface energy technology, applied in coatings and other directions, can solve problems such as limited performance, poor curing of coatings, and easy occurrence of oxygen resistance effect, so as to eliminate oxygen resistance effect, improve uniformity and mechanical properties, The effect of promoting connection strength

Inactive Publication Date: 2017-02-08
CHENGDU NASHUO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a significant disadvantage of light-cured coatings is that the curing process is prone to oxygen resistance effect, resulting in poor curing of the coating and limited performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Stir and mix 10 parts of trimethylolpropane triacrylate, 2 parts of fluorinated methacrylate, and 0.04 part of α-hydroxyalkyl phenone at 10°C;

[0019] (2) Add 3 parts of nano-silica with a particle size of 50nm and 0.01 part of nano-silver particles with a particle size of 20nm into tetrahydrofuran, use ultrasonic dispersion for 10min, and then add 1 part of mercaptopropylmethyldimethoxysilane , heat up to 110°C and reflux for 30 minutes, then continue to heat up and concentrate the liquid to 1 / 2 volume, add 3 parts of fluorinated methacrylate when the temperature is lowered to 30°C, and stir evenly;

[0020] (3) Mix the liquid obtained in step (1) with the liquid obtained in step (2), add 0.01 part of dibutyltin dilaurate and 0.06 part of isophorone diisocyanate, and stir evenly;

[0021] (4) Add 1 part of polylactic acid with a molecular weight of 5,000 to 15,000 to the mixture obtained in step (3), knead at 250°C for 1 hour, and store the product in the dark to ...

Embodiment 2

[0023] (1) Stir and mix 15 parts of trimethylolpropane triacrylate, 2 parts of fluorinated methacrylate, and 0.4 part of α-hydroxyalkyl phenone at 20°C;

[0024] (2) Add 0.05 part of nano-silica with a particle size of 100nm and silver particles with a particle size of 30nm into tetrahydrofuran, use ultrasonic dispersion for 30min, then add 3 parts of mercaptopropylmethyldimethoxysilane, and heat up Reflux at 100°C for 60 minutes, then continue to heat up and concentrate the liquid to 1 / 2 volume, add 5 parts of fluorinated methacrylate when the temperature drops to 40°C, and stir evenly;

[0025] (3) Mix the liquid obtained in step (1) with the liquid obtained in step (2), add 0.1 part of dibutyltin dilaurate and 0.6 part of isophorone diisocyanate, and stir evenly;

[0026] (4) Add 3 parts of polylactic acid with a molecular weight of 5,000 to 15,000 to the mixture obtained in step (3), knead at 150°C for 3 hours, and store the product in the dark to obtain the low-surface an...

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PUM

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Abstract

The invention discloses a preparation method of a self-cleaning photocureable coating with low surface energy. The preparation method comprises the following steps: (1) mixing trimethylolpropane triacrylate, a first part fluorinated metacrylic acid ester and alpha-hydroxyalkylbenzophenone; (2) modifying nano-silica and silver nanoparticles and 3-mercaptopropylmethyldimethoxysilane, and mixing the modified product with fluorinated metacrylic acid ester; (3) mixing liquids obtained in the step (1) and the step (2), and adding dibutyltin dilaurate and isophorone diisocyanate; and (4) mixing the product obtained in the step (3) and polylactic acid so as to obtain the self-cleaning photocureable coating with low surface energy. There exists no oxygen inhibition during curing of the prepared photocureable coating, and curing is complete. The photocureable coating has excellent mechanical properties, has dustproof and antibacterial effects, and has self-cleaning capability.

Description

technical field [0001] The present invention relates to the field of photocurable coatings. Background technique [0002] Photocurable coatings, also known as photosensitive coatings, are usually obtained by using ultraviolet light as the energy source to trigger the reaction of coating components. Photocurable coatings do not need to be heated when used, and can be used on flammable substrates such as paper, plastic, leather and wood. It can quickly solidify into a film, and its curing time is short, the curing temperature is low, and the volatile matter is low, which can save a lot of energy and resources, and is pollution-free and high-efficiency. However, a significant disadvantage of photocurable coatings is that the oxygen resistance effect is prone to occur during the curing process, resulting in poor curing of the coating and limited performance. Contents of the invention [0003] The object of the present invention is to propose a method for preparing a light-cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/12
CPCC09D4/06
Inventor 黄波
Owner CHENGDU NASHUO TECH
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