Vinyl ester resin as well as preparation method and application thereof

A vinyl ester resin, resin technology, applied in the field of vinyl ester resin and its preparation, can solve the problems of corrosion resistance, mechanical properties, easy to decompose, affect deep curing, etc., to achieve uniform distribution and avoid yellowing. Effect

Active Publication Date: 2020-01-10
力森诺科高分子材料(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this resin is that although it can meet the general corrosion resistance requirements, the oxazolidinone five-membered ring is introduced into its structure. It is easily decomposed in a strong acid environment, which limits its use
Its purpose is to increase the speed of photocuring, but its products are light yellow transparent liquid, which will affect its deep curing due to wavelength absorption during photocuring
[0007] To sum up, the traditional resin technology, in order to pursue properties such as flame retardancy and temperature resistance, has affected the corrosion resistance and mechanical properties of the resin part, or introduced non-environmentally friendly raw materials at the cost of achieving its purpose
Moreover, the existing technology cannot obtain a colorless and transparent product appearance on the basis of taking into account flame retardancy, temperature resistance, corrosion resistance, and mechanical properties, which limits the application of resins

Method used

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  • Vinyl ester resin as well as preparation method and application thereof
  • Vinyl ester resin as well as preparation method and application thereof
  • Vinyl ester resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The present embodiment provides a kind of method for preparing vinyl ester resin, specifically comprises:

[0093] Get 400g epoxy equivalent and be that the bromine content of 400g / mol is 48% brominated epoxy resin (Changchun Resin Factory Co., Ltd., BEB400 type resin), be warming up to 105 ℃ and feed air 10%+nitrogen 90% (volume percentage ), to which 2.4g of tetradecylbenzylphosphorous chloride, 1.6g of ethyl propyl phosphite, 2.4g of hydroquinone were added successively, and 43g of methacrylic acid was added dropwise to carry out the ring-opening reaction;

[0094] After the acid value is 0KOH mg / g, add 73g of adipic acid.

[0095] When the acid value is below 190KOH mg / g, add 270g of novolac epoxy resin (Changchun Resin Factory Co., Ltd., PNE177 resin) with a relative molecular weight of 540.

[0096] When the acid value is reacted below 5KOH mg / g, 86g of methacrylic acid is added dropwise.

[0097]When the acid value was reacted to 10-15KOH mg / g, the temperature ...

Embodiment 2

[0099] The present embodiment provides a kind of method for preparing vinyl ester resin, specifically comprises:

[0100] Get 400g epoxy equivalent and be the brominated epoxy resin EX-48 (Changchun Resin Factory Co., Ltd., BEB400 type resin) of 400g / mol epoxy equivalent, be warming up to 105 ℃ and feed air 10%+nitrogen 90% (volume percentage) Mixed gas, 2.4g of decylbenzylphosphorous chloride, 1.6g of methyl ethyl phosphite, 2.4g of hydroquinone were added successively therein, and 43g of methacrylic acid was added dropwise to carry out the ring-opening reaction;

[0101] After the acid value is 0KOH mg / g, add 73g of adipic acid.

[0102] When the acid value is below 190KOH mg / g, add 270g of novolac epoxy resin (Changchun Resin Factory Co., Ltd., PNE177 resin) with a relative molecular weight of 540.

[0103] When the acid value is reacted below 5KOH mg / g, 86g of methacrylic acid is added dropwise.

[0104] When the acid value was reacted to 10-15KOH mg / g, the temperature w...

Embodiment 3

[0106] The present embodiment provides a kind of method for preparing vinyl ester resin, specifically comprises:

[0107] Get 400g epoxy equivalent and be the brominated epoxy resin EX-48 (Changchun Resin Factory Co., Ltd., BEB400 type resin) of 400g / mol epoxy equivalent, be warming up to 105 ℃ and feed air 10%+nitrogen 90% (volume percentage) To the mixed gas, 2.4g of tetradecylbenzylphosphorus chloride, 1.6g of ethyl propyl phosphite, 2.4g of hydroquinone were successively added, and 36g of acrylic acid was added dropwise to carry out the ring-opening reaction;

[0108] After the acid value is 0KOH mg / g, add 59.0 g of succinic acid.

[0109] When the acid value is below 190KOH mg / g, add 270g of novolac epoxy resin (Changchun Resin Factory Co., Ltd., PNE177 resin) with a relative molecular weight of 540.

[0110] When the acid value is reacted below 5KOH mg / g, 72g of acrylic acid is added dropwise.

[0111] When the acid value was reacted to 10-15KOH mg / g, the temperature w...

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Abstract

The invention relates to the technical field of high polymer materials, and particularly discloses a vinyl ester resin as well as a preparation method and application thereof. The vinyl ester resin ofthe present invention contains one or more resin H units having a structure disclosed in the invention, where n is 1-3; m is 1 to 3; R1 is -H or-CH3, R2 is-(CH2)2-, and -(CH2)4-. The preparation method comprises the following steps: (1) reacting brominated bisphenol A epoxy resin A with a monocarboxylic acid to prepare resin C; (2) reacting the resin C with a dicarboxylic acid to obtain resin E;(3) reacting the resin E with phenolic epoxy resin F to obtain resin G. The preparation method is simple in preparation, and the prepared modified vinyl ester resin is colorless and transparent in appearance, high in strength, possesses corrosion resistance, flame resistance, heat resistance and the like, can be cured in a photocuring mode, and is suitable for being applied to environmental protection engineering.

Description

technical field [0001] The invention relates to the technical field of polymer materials. Specifically, it relates to a vinyl ester resin and its preparation method and application. Background technique [0002] Vinyl ester resin is a type of denatured epoxy resin obtained by reacting epoxy resin with an acid containing unsaturated bonds. It is usually called vinyl ester resin (VER), also known as epoxy vinyl ester resin. It is thermosetting resin. Vinyl ester resin inherits the excellent characteristics of epoxy resin, has high strength and excellent corrosion resistance, and has broad application prospects. According to different application requirements, various modified vinyl ester resins have been researched and developed, making their application fields more and more extensive. Among them, it has become a hot spot to comprehensively improve its flame retardancy, heat resistance, appearance and color properties to meet the requirements of various projects (for exampl...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G59/17C08G59/14
CPCC08G59/1438C08G59/1466C08G81/00
Inventor 李会峰
Owner 力森诺科高分子材料(上海)有限公司
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