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UV-cured self-repairing polyurethane acrylate coating and preparation method thereof

A polyurethane acrylate, self-healing technology, applied in the field of coatings, can solve problems such as poor durability, long time required, and low repair efficiency

Inactive Publication Date: 2021-07-06
南阳金牛彩印集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above patents focus on improving the elasticity, adhesion, wear resistance, scratch resistance, fingerprint resistance and weather resistance of UV light-cured urethane acrylate coatings, while paying less attention to the self-healing performance of the coating. And the repair of its coating scratches mainly depends on the elastic recovery of the material itself, the repair efficiency is low, the time required is long, and the durability is poor

Method used

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  • UV-cured self-repairing polyurethane acrylate coating and preparation method thereof
  • UV-cured self-repairing polyurethane acrylate coating and preparation method thereof
  • UV-cured self-repairing polyurethane acrylate coating and preparation method thereof

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Effect test

Embodiment 1

[0025] The UV curing polyurethane acrylate coating of the present invention comprises the following components by weight: 25 parts of isophorone diisocyanate, 48 parts of polycaprolactone diol (molecular weight 1000), 3.5 parts of butanediol, furfuryl alcohol / maleic acid 10 parts of hydroxyethyl imide / hydroxyethyl acrylate (0.5:0.5:1) composition, 0.05 part of p-hydroxyanisole, 0.05 part of stannous octoate, 2-hydroxy-2-methyl-1-phenylacetone 0.8 parts, 0.5 parts of BYK-333 leveling agent, 10 parts of ethyl acrylate and 90 parts of butyl acetate.

[0026] The preparation method of this UV curing polyurethane acrylate coating is as follows:

[0027] Put the dried polycaprolactone diol and isophorone diisocyanate into the reaction kettle, mix, melt and stir, when the temperature rises to 70°C, add stannous octoate, control the temperature at 80°C and stir the reaction under nitrogen protection for 1.5 h; after that, butanediol was added, and the stirring reaction was continued ...

Embodiment 2

[0029] UV curing polyurethane acrylate coating of the present invention comprises following components by weight: 23 parts of toluene diisocyanate, 45 parts of polypropylene glycol (molecular weight 1000), 3 parts of butanediol, furfuryl alcohol / maleimide hydroxyethyl ester / acrylic acid 9 parts of hydroxyethyl ester (0.5:0.5:1) composition, 0.05 part of p-hydroxyanisole, 0.05 part of stannous octoate, 1 part of 2-hydroxy-2-methyl-1-phenylacetone, BASF Tinuvin 1130 0.6 10 parts, 10 parts of isooctyl acrylate and 80 parts of toluene.

[0030] The preparation method of this UV curing polyurethane acrylate coating is as follows:

[0031] Put the dry and dehydrated polypropylene glycol and toluene diisocyanate into the reaction kettle, mix, melt and stir, add stannous octoate when the temperature rises to 70°C, control the temperature at 75°C and stir for 2 hours under nitrogen protection; then add butanediol , Continue to stir and react at 75°C for 1.5h to obtain a polyurethane p...

Embodiment 3

[0033] The UV curing polyurethane acrylate coating of the present invention comprises the following components by weight: 30 parts of dicyclohexylmethane-4,4'-diisocyanate, 50 parts of polytetrahydrofuran diol (molecular weight 2000), 3 parts of hexanediol, furfuryl alcohol / hydroxyethyl maleimide / hydroxyethyl acrylate (0.5:0.5:1) composition 11 parts, 2,5-di-tert-butylhydroquinone 0.05 parts, dibutyltin dilaurate 0.06 parts, 1 - 1.2 parts of hydroxycyclohexyl phenyl ketone, 0.05 parts of BYK BYK052 defoamer, 0.05 parts of BYK-333 leveling agent, 15 parts of 1,6-hexanediol diacrylate and ethyl acetate / propylene glycol methyl Ether acetate (1:2) 90 parts.

[0034] The preparation method of this UV curing polyurethane acrylate coating is as follows:

[0035] Put the dried and dehydrated polytetrahydrofuran diol and dicyclohexylmethane-4,4'-diisocyanate into the reaction kettle, mix, melt and stir, add dibutyltin dilaurate when the temperature rises to 70°C, control the tempera...

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Abstract

The invention discloses a UV-cured self-repairing type polyurethane acrylate coating and a preparation method thereof. The polyurethane resin coating is prepared from, by mass, 20 to 35 parts of diisocyanate, 40 to 55 parts of polymer polyol, 3 to 5 parts of a micromolecular diol chain extender, 5 to 12 parts of a functional end-capping reagent composition, 0.03 to 0.05 part of a polymerization inhibitor, 0.05 to 1 part of a catalyst, 0.5 to 3 parts of a photoinitiator, 0.5 to 2 parts of other auxiliaries, 10 to 20 parts of a diluting monomer and 60 to 100 parts of a solvent. The UV-cured polyurethane acrylate is flexible in structural design, the functional end-capping reagent adopts a composition containing three groups, namely furfuryl, maleimide and acrylate, and the furfuryl and the maleimide can form a dynamically reversible Diels-Alder covalent bond, therefore, the UV light-cured polyurethane acrylate coating prepared by the preparation method disclosed by the invention not only has higher glossiness and transparency, but also has better tensile strength, hardness and wear resistance, and also has good self-repairing performance.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a UV curing self-repairing polyurethane acrylate coating and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, coating products / technology have been applied to all aspects of people's daily life. The well-known ordinary decorative coatings are gradually replaced by new functional coating products with high technological content, environmental protection and unique functions. The continuous growth of demand for downstream high-end consumer goods such as new energy batteries, aerospace, and new smart electronic equipment provides a favorable guarantee for the development of the new functional coatings industry. Among them, UV light-curing coatings are favored by the market because of their fast curing speed, low energy consumption, cleanliness and environmental protection, and excellent coating performance. [0003] T...

Claims

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Application Information

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IPC IPC(8): C09D175/16C08G18/66C08G18/67C08G18/42C08G18/32C08G18/28C08G18/48
CPCC09D175/16C08G18/664C08G18/6674C08G18/672C08G18/4277C08G18/28C08G18/4833C08G18/4854C08G18/4825C08G18/2845
Inventor 程新峰李君君李旭阳贾小平贾佳赵旭峰杜军记
Owner 南阳金牛彩印集团有限公司
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