Synthetic method and application of epoxy vinyl ester resin with high bromine content

A technology of epoxy vinyl ester and synthesis method, which is applied in the field of synthetic resin flame retardant additives, can solve the problems of reduced mechanical properties, unstable flame retardant effect of additive type flame retardants, difficult molding, etc., and achieves convenient operation and thermal deformation. Effect of elevated temperature, good mechanical properties

Active Publication Date: 2012-07-25
HUACHANG POLYMER EAST CHINA UNIV OFSCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although additive flame retardants are easy to use and low in price, due to the addition of such flame retardants, the mechanical properties of the product (such as tensile strength, tensile modulus, flexural strength, flexural modulus, etc.) are reduced, and at the same time The viscosity of the resin is increased, which brings difficulties to the product molding in the production of FRP, and the flame retardant effect of the added flame retardant is unstable after a long time

Method used

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  • Synthetic method and application of epoxy vinyl ester resin with high bromine content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Drop into high bromine content EX-48 bisphenol A epoxy resin 600g in 1000ml there-necked flask with thermometer, stirrer, condenser, methacrylic acid 105g, fumaric acid 11.6g, hydroquinone 0.35g, N, 3.5g of N'-dimethylaniline, heated to 80°C-90°C, stirring at the same time, measuring the acid value at intervals, until the acid value is less than 30mgKOH / g as the end point of the reaction, stop the reaction. Cool the reaction product below 100°C, add 320g of styrene, stir and cool to room temperature to obtain epoxy vinyl ester resin with high bromine content.

Embodiment 2

[0027] Put 600g of high bromine content EX-48 bisphenol A epoxy resin, 120g of methacrylic acid, 0.35g of hydroquinone, and 3.5g of tetramethylammonium chloride into a 1000ml three-necked flask equipped with a thermometer, agitator and condenser , heat up to 90°C to 100°C while stirring, measure the acid value at intervals until the acid value is less than 30mgKOH / g as the end point of the reaction, stop the reaction. Cool the reaction product below 100°C, add 160g of styrene and 160g of vinyl toluene, stir and cool to room temperature to obtain epoxy vinyl ester resin with high bromine content.

Embodiment 3

[0029] In a 1000ml three-necked flask equipped with a thermometer, a stirrer and a condenser, 500g of high bromine content CYDB-400 bisphenol A epoxy resin, 101g of methacrylic acid, 11.6g of fumaric acid, 0.35g of methyl p-phenol, benzyl Triethylammonium chloride 3.0g, heat up to 90°C-100°C, stir at the same time, measure the acid value at intervals, until the acid value is less than 30mgKOH / g as the end point of the reaction, stop the reaction. Cool the reaction product to below 100°C, add 350g of styrene, stir and cool to room temperature to obtain epoxy vinyl ester resin with high bromine content.

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Abstract

The invention belongs to the technical field of synthesizing resin flame retardant additives, and relates to a synthetic method and application of epoxy vinyl ester resin with high bromine content. The synthetic method is characterized by comprising the following steps: calculating components in a container by weight parts, firstly, adding 50-75 parts of bisphenol A epoxy resin with high bromine content and 8-20 parts of unsaturated carboxylic acid, raising the temperature to 80-140 DEG C for reacting in the presence of a catalyst and a polymerization inhibitor until the acid value is less than 30mgKOH / g, and then adding 10-40 parts of a diluent for stirring, diluting and cooling to obtain the final reaction product of epoxy vinyl ester resin with high bromine content. The product is used as a reactive-type flame retardant additive to mix with the non-flame retardant epoxy vinyl ester resin or unsaturated polyester resin by any proportion to obtain flame-retardant resin with different flame-retardant levels and prepare resin-based composite materials meeting the flame-retardant requirements. The preparation method in the invention has the characteristics of simple process, convenient operation and the like.

Description

technical field [0001] The invention belongs to the technical field of synthetic resin flame retardant additives, and relates to a synthesis method and application of epoxy vinyl ester resin with high bromine content. Material. Background technique [0002] Most synthetic resins have a common shortcoming, which is easy to decompose and burn at high temperature in the air. Most of their limiting oxygen indexes are less than 21%, while the oxygen content in the air is 21%. Therefore, as long as they encounter a fire source or the temperature reaches the ignition point, most synthetic resins will be ignited. However, synthetic resins may produce a variety of toxic or corrosive volatile products and smoke during pyrolysis and combustion, which not only easily causes damage to key components in electronic and electrical equipment and leads to failure of the entire set of equipment, but more seriously It has serious harm to the respiratory tract and other organs of the human bod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08G59/40C08G59/42C08G59/17C08G59/14C08L51/08
Inventor 李晗周润培刘坐镇钱建华
Owner HUACHANG POLYMER EAST CHINA UNIV OFSCI & TECH
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