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Preparation method for UV-curing self-healing polyurethane based on furan-maleimide structure

A technology of maleimide and ultraviolet light, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as repairing environmental pollution, difficult degradation and repair of polymer networks, and achieves reduced life cycle costs and excellent physical properties. Performance, safety improvement effect

Active Publication Date: 2016-02-24
江西国计纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the highly cross-linked polymer network formed by photocuring, it is difficult to degrade and repair, followed by repair problems during use and environmental pollution after use.

Method used

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  • Preparation method for UV-curing self-healing polyurethane based on furan-maleimide structure
  • Preparation method for UV-curing self-healing polyurethane based on furan-maleimide structure
  • Preparation method for UV-curing self-healing polyurethane based on furan-maleimide structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This example illustrates a preparation method 1 of a furan-maleimide-based UV-curable self-healing polyurethane provided by the present invention;

[0030] (1) At room temperature, slowly add 2.4 mol of furan to 0.4 mol of maleic anhydride dissolved in acetone, stir rapidly to disperse evenly, react for 24 hours, filter with suction, wash with a small amount of ether, filter, filter The cake was dried to obtain intermediate 1; 0.2 mol of intermediate 1 was dissolved in absolute ethanol to form solution 1, 0.2 mol of ethanolamine dissolved in absolute ethanol and 0.2 mol of triethylamine were prepared into solution 2, under nitrogen protection, Maintain the temperature at 0-2°C, slowly drop solution 2 into solution 1, then steadily increase the temperature to 80°C, reflux for 4 hours, then cool to room temperature, stand overnight, precipitate out, filter, and the filtrate is decompressed at 50°C Concentrate under low temperature, cool to room temperature overnight to pr...

Embodiment 2

[0034] This example illustrates the preparation method 2 of a UV-curable self-healing polyurethane based on a furan-maleimide structure provided by the present invention;

[0035](1) At room temperature, slowly add 2.0 mol of furan to 0.4 mol of maleic anhydride dissolved in toluene, stir rapidly to disperse evenly, react for 18 hours, filter with suction, wash with a small amount of ether, filter, filter The cake was dried to obtain intermediate 1; 0.2 mol of intermediate 1 was dissolved in absolute ethanol to form solution 1, and 0.24 mol of ethanolamine dissolved in absolute ethanol and 0.26 mol of triethylamine were prepared into solution 2, under nitrogen protection, Keep the temperature at 0-2°C, slowly drop solution 2 into solution 1, then steadily raise the temperature to 90°C, reflux for 3 hours, then cool to room temperature, stand overnight, precipitate precipitate, filter, and the filtrate is decompressed at 45°C Concentrate under low temperature, cool to room temp...

Embodiment 3

[0039] This example illustrates the preparation method 3 of a UV-curable self-healing polyurethane based on a furan-maleimide structure provided by the present invention;

[0040] (1) At room temperature, slowly add 1.6 mol of furan to 0.4 mol of maleic anhydride dissolved in toluene, stir rapidly to disperse evenly, react for 16 hours, filter with suction, wash with a small amount of ether, filter, filter The cake was dried to obtain intermediate 1; 0.2 mol of intermediate 1 was dissolved in absolute ethanol to form solution 1, 0.2 mol of ethanolamine dissolved in absolute ethanol and 0.2 mol of triethylamine were prepared into solution 2, under nitrogen protection, Maintain the temperature at 0-2°C, slowly drop solution 2 into solution 1, then steadily raise the temperature to 85°C, reflux for 3.5 hours, then cool to room temperature, stand overnight, precipitate precipitate, filter, and the filtrate is decompressed at 50°C Concentrate under low temperature, cool to room tem...

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Abstract

A preparation method for UV-curing self-healing polyurethane based on a furan-maleimide structure adopts furan, maleic anhydride, ethanolamine, furfuryl alcohol, diisocyanate, divalent alcohol, a mono-hydroxy unsaturated monomer and the like as raw materials to synthesize bifunctional UV-curing polyurethane comprising a furan-maleimide addition product. The polyurethane provided by the invention is synthesized through a conventional way, is practical, low in cost and suitable for industrial production, and can be applied to a UV curing system; energy conservation and emission reduction are realized; moreover, a cured film of the polyurethane is excellent in physical property, mechanical property, medium resistance and thermal performance; through the furan-maleimide addition product in resin, the UV curing system is endowed with the self-healing performance, so that the material safety is improved, the service life is prolonged, and the material life cycle cost is reduced.

Description

technical field [0001] The invention belongs to the field of self-healing functional coatings, and in particular relates to a preparation method of ultraviolet-cured self-healing polyurethane based on a furan-maleimide structure. Background technique [0002] With the increasing scarcity of oil resources and the overall deterioration of the environment, energy conservation and emission reduction has become the focus of global attention. In recent years, the environmental pollution and energy consumption problems caused by coatings have become more and more serious, especially after the traditional solvent-based coatings are painted, a large amount of volatile matter (VOC) will be slowly released during the life cycle, so the development of new energy-saving and environmentally friendly Coatings have become a very important part of the energy-saving and emission-reduction industry. Among them, light-curing technology is a typical representative of energy-saving and environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/44C08G18/32C08G18/48C08G18/42C09D175/16
CPCC08G18/3846C08G18/4277C08G18/428C08G18/44C08G18/4833C08G18/6715C08G18/672C09D175/16C08G18/6633C08G18/6666
Inventor 梁红波柯小雪黄圣梅熊磊徐海涛
Owner 江西国计纳米科技有限公司
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