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Ultraviolet-cured high-temperature-resistant epoxy acrylate and preparation method thereof

A technology of epoxy acrylate and ultraviolet light, which is applied in the direction of epoxy resin coating, coating, etc., and can solve the problem of not being resistant to high temperature

Inactive Publication Date: 2013-02-27
苏州市明大高分子科技材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the shortcomings of the existing UV-cured epoxy acrylate oligomers that are not resistant to high temperatures after film formation, the present invention provides a UV-cured high-temperature-resistant epoxy acrylate and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 43.5 grams of phenolic epoxy (Dow Chemical 3301) into a three-necked flask, stir at a speed of 200-250 rpm and raise the temperature to 80-90°C, add 15.8 grams of acrylic acid, 0.4 grams of triethylamine, and a polymerization inhibitor dropwise. Add 0.03 g of p-hydroxyanisole mixed liquid, control the temperature at 95-100° C., stir and react at 250-300 rpm for 6 hours, add 40 g of TMPTA and stir for 20 minutes to obtain the product epoxy acrylate.

[0029] The synthetic product is liquid, water white and transparent at 25°C, with an AV of 3.5, a viscosity of 59000mpa.s / 25°C, and a refractive index of 1.5345.

Embodiment 2

[0031] Put 42.5 grams of novolac epoxy resin into a three-necked flask, heat up to 80-90°C under stirring at a speed of 200-250 rpm, add dropwise a mixture of 15.6 grams of acrylic acid, 0.4 grams of triphenylphosphine, and a polymerization inhibitor p-hydroxybenzene The mixed liquid of 0.03 g of methyl ether is controlled at 95-100° C., stirred and reacted at a speed of 250-300 rpm for 4 hours, and 40 g of TMPTA is added and stirred for 20 minutes to obtain the product epoxy acrylate.

[0032] The synthetic product is liquid, water white and transparent at 25°C, with an AV of 2.5, a viscosity of 50000mpa.s / 25°C, and a refractive index of 1.5348.

Embodiment 3

[0034] Put 42.6 grams of novolac epoxy resin into a three-necked flask, stir at a speed of 200 to 250 rpm and raise the temperature to 80 to 90 ° C, dropwise add 15.8 grams of acrylic acid and 0.5 grams of N, N-dimethylbenzyl ammonium chloride 1. A mixed liquid of 0.02 g of polymerization inhibitor p-hydroxyanisole, temperature controlled at 95-100°C, stirred and reacted at a speed of 250-300 rpm for 4 hours, added TMPTA and stirred for 20 minutes to obtain the product epoxy acrylate.

[0035] The synthetic product is liquid, water white and transparent at 25°C, with an AV of 1.5, a viscosity of 52000mpa.s / 25°C, and a refractive index of 1.5343.

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Abstract

The invention discloses an ultraviolet-cured high-temperature-resistant epoxy acrylate and a preparation method thereof. The ultraviolet-cured high-temperature-resistant epoxy acrylate comprises the following raw materials in parts by mass: 42.5-43.5 parts of novolac epoxy resin, 15.5-15.8 parts of acrylic acid, 0.25-0.50 part of catalyst, 0.020-0.060 part of polymerization inhibitor and 40 parts of TMPTA (trihydroxymethyl propane triacrylate). The novolac epoxy resin is bisphenol-F type novolac epoxy resin. The ultraviolet-cured high-temperature-resistant epoxy acrylate has the characteristics that epoxy acrylate can be subjected to ultraviolet curing, and cured film can resist the temperatures being greater than 200 DEG C. The ultraviolet-cured high-temperature-resistant epoxy acrylate disclosed by the invention is simple and feasible in process, conveniently highlights high-temperature resistance advantages of an ultraviolet oligomer in vehicle lamps and heated coating, and is a safe and green macromolecular curing material.

Description

technical field [0001] The invention belongs to the field of preparation of ultraviolet light curing oligomers, in particular to a preparation method for synthesizing an ultraviolet light curing epoxy acrylate polymer which is resistant to high temperature after film formation. Background technique [0002] With the rapid development of modern industry, the modern coating industry is developing in the direction of environmental protection, green, energy saving, and low carbon. Traditional solvent-based coatings are subject to more and more restrictions due to the emission of volatile organic compounds (VOC). Green coatings represented by cured coatings (UVCC), water-based coatings, high-solid content coatings and powder coatings have become a focus of attention and research. Compared with other types of coatings, UVCC has the characteristics of fast curing rate (instant curing, the fastest a few tenths of a second), low curing temperature, nearly 100% curing, energy saving, ...

Claims

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Application Information

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IPC IPC(8): C08G59/14C08G59/17C09D163/10
Inventor 余宗萍杨鹏飞
Owner 苏州市明大高分子科技材料有限公司
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