Vinyl ester flame-retardant resin containing polyester structure and preparation method thereof

A vinyl ester and flame retardant resin technology, applied in the field of vinyl ester resin, can solve the problems of general compactness and fatigue resistance, lack of cross-linking points in the main chain, single cross-linking density, etc., and achieve good fatigue resistance and Flame retardant effect, saving manpower and equipment cost, simple process effect

Pending Publication Date: 2020-11-27
浙江晨诺高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The carbon-carbon double bonds of conventional vinyl ester resins are at both ends of the main chain of the molecule, and the cross-linking density is relatively single, resulting in the lack of cross-linking points in the middle of the main chain when the resin is cured, and the compactness and fatigue resistance are average;
[0005] 2. No flame retardant effect of traditional vinyl ester resin

Method used

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  • Vinyl ester flame-retardant resin containing polyester structure and preparation method thereof
  • Vinyl ester flame-retardant resin containing polyester structure and preparation method thereof

Examples

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Effect test

preparation example Construction

[0033] A kind of preparation method of the vinyl ester flame retardant resin containing polyester structure, comprises the following steps:

[0034] S1, first carry out polycondensation reaction with dibasic carboxylic acid and / or dibasic carboxylic acid anhydride with dibasic alcohol, make the unsaturated polyester prepolymer that end group on both sides all contains carboxyl group; Control the reaction temperature of described polycondensation reaction to be 130~190℃;

[0035] 【At least one halogen in the structure】

[0036] S2, then combine the unsaturated polyester prepolymer obtained in step S1 with carboxyl groups at the end groups on both sides, with halogen-containing or halogen-free epoxy resin, and unsaturated monobasic acid containing ethylenic bonds, in a catalyst, In the presence of a polymerization inhibitor, ring-opening polymerization of epoxy groups is carried out at a reaction temperature of 105-135 ° C to form vinyl ester resin; then dissolved in reactive m...

Embodiment 1

[0053] A kind of preparation method of the vinyl ester flame retardant resin containing polyester structure, comprises the following steps:

[0054] S1, first carry out polycondensation reaction with dibasic carboxylic acid and / or dibasic carboxylic acid anhydride with dibasic alcohol, make the unsaturated polyester prepolymer that end group on both sides all contains carboxyl group; Control the reaction temperature of described polycondensation reaction to be 130°C;

[0055] S2, then combine the unsaturated polyester prepolymer obtained in step S1 with carboxyl groups at the end groups on both sides, with halogen-containing or halogen-free epoxy resin, and unsaturated monobasic acid containing ethylenic bonds, in a catalyst, In the presence of a polymerization inhibitor, ring-opening polymerization of epoxy groups is carried out at a reaction temperature of 105°C to form vinyl ester resin; then dissolved in reactive monomers containing unsaturated double bonds, the temperatur...

Embodiment 2

[0061] A kind of preparation method of the vinyl ester flame retardant resin containing polyester structure, comprises the following steps:

[0062] S1, first carry out polycondensation reaction with dibasic carboxylic acid and / or dibasic carboxylic acid anhydride with dibasic alcohol, make the unsaturated polyester prepolymer that end group on both sides all contains carboxyl group; Control the reaction temperature of described polycondensation reaction to be 190°C;

[0063] S2, then combine the unsaturated polyester prepolymer obtained in step S1 with carboxyl groups at the end groups on both sides, with halogen-containing or halogen-free epoxy resin, and unsaturated monobasic acid containing ethylenic bonds, in a catalyst, In the presence of a polymerization inhibitor, ring-opening polymerization of epoxy groups is carried out at a reaction temperature of 135°C to form vinyl ester resin; then dissolved in reactive monomers containing unsaturated double bonds, the temperatur...

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PUM

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Abstract

The invention discloses a preparation method of vinyl ester flame-retardant resin containing a polyester structure, comprising the following steps of: S1, carrying out a polycondensation reaction on dicarboxylic acid and / or dicarboxylic acid anhydride and dihydric alcohol to obtain an unsaturated polyester prepolymer containing carboxyl at two end groups, wherein the reaction temperature of the polycondensation reaction is controlled to be 130-190 DEG C; and S2, carrying out a ring-opening polymerization reaction of an epoxy group between the unsaturated polyester prepolymer containing carboxyl at two end groups obtained in the step S1 and halogen-containing or halogen-free epoxy resin and unsaturated monobasic acid containing an olefinic bond at 105-135 DEG C in the presence of a catalystand a polymerization inhibitor to form vinyl ester resin; and then dissolving the vinyl ester resin in a reactive monomer containing unsaturated double bonds, and controlling the temperature at 70-80DEG C to obtain the vinyl ester flame-retardant resin containing the polyester structure. The vinyl ester flame-retardant resin containing the polyester structure prepared by the preparation method disclosed by the invention has good fatigue resistance and flame-retardant effect.

Description

technical field [0001] The invention relates to the field of vinyl ester resins, in particular to a vinyl ester flame retardant resin containing a polyester structure and a preparation method thereof. Background technique [0002] Vinyl ester resin is an addition reaction product of an epoxy resin and an unsaturated monobasic acid containing an ethylenic bond. It has an unsaturated double bond at the end of the resin molecular chain and is dissolved in another reaction containing an unsaturated double bond. Among the permanent monomers, it has good mechanical properties and corrosion resistance after curing, and has become the main matrix resin for corrosion-resistant glass fiber reinforced plastic products. It is widely used in chemical, petroleum, petrochemical, nonferrous, metallurgy, electric power, building materials and other industries It has become a representative variety of corrosion-resistant resins. [0003] But, vinyl ester resin and its preparation technology ...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G63/682C08G59/17
CPCC08G59/1466C08G63/6828C08G81/00
Inventor 陆士平吴聪于东海王天堂张钧钧陆奇陆伟良陆齐奥
Owner 浙江晨诺高分子材料有限公司
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