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Tech. for synthesizing high toughness epoxy vinyl ester resin

A technology of epoxy vinyl ester and resin synthesis process, which is applied in the field of high toughness epoxy vinyl ester resin and its synthesis process, which can solve the problem of lack of flexible groups, failure to achieve elongation at break, impact strength and elongation at break The efficiency cannot be satisfied and other problems, to achieve the effect of simple synthesis process, environmental protection, no three wastes, and good product stability

Inactive Publication Date: 2006-06-28
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 the overall performance of epoxy vinyl ester resin is excellent, some aspects of performance, such as impact strength and elongation at break, cannot meet the special requirements of some FRP products.
The epoxy vinyl ester resin obtained by the ring-opening esterification reaction of unsaturated organic monocarboxylic acid and epoxy resin lacks flexible groups in the molecular structure, and the elongation at break of the resin casting body is only 3-6%. Strength 5~8KJ / m 2 Obviously, it cannot meet the requirement that the elongation at break of the matrix resin of some FRP products is >8%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the reactor, drop into bisphenol A type E-44 epoxy resin 340g, methacrylic acid 62g, adipic acid 60g, carboxyl-terminated liquid nitrile rubber (acrylonitrile content is 10%) 30g, benzyl dimethylamine 1.2g , p-phenol 0.20g. Stir under the condition of feeding nitrogen gas, gradually raise the temperature to 130°C, the reaction system becomes uniform and transparent, and then keep the temperature for 1-2 hours until the measured acid value is less than 30mgKOH / g. Cool down to below 110°C and add 310g of styrene, stir thoroughly, and finally cool to room temperature, filter to obtain light yellow turbid viscous liquid.

Embodiment 2

[0024] Bisphenol A type epoxy resin (E-51) 340g, acrylic acid 62g, sebacic acid 85g, carboxyl-terminated liquid nitrile rubber (acrylonitrile content is 18%) 35g, benzyltrimethylammonium chloride 0.95g, 0.10 g of methyl-p-phenol was put into the device shown in Example 1, stirred under the situation of feeding nitrogen gas and gradually heated to 120° C., followed by the same operation steps as in Example 1.

Embodiment 3

[0026] Bisphenol A type epoxy resin (E-44) 340g, methacrylic acid 60g, adipic acid 65g, carboxyl-terminated liquid nitrile rubber (acrylonitrile content is 21.5%) 40g, benzyltriethylammonium chloride 1.4 g. Put 0.18 g of tert-butyl hydroquinone into the device shown in Example 1, and gradually raise the temperature to 160°C under the condition of feeding nitrogen gas. After the reaction system becomes uniform and transparent, keep the temperature for 1 to 2 hours until the acid The value is less than 30 mgKOH / g. Cool down to below 110°C, add 270g of styrene and 30g of methyl methacrylate, stir thoroughly, and finally cool to room temperature, filter to obtain a light yellow turbid viscous liquid.

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Abstract

The invention relates to a high tenacity epoxy vinyl ester resin and the compounding method that takes open loop esterification reaction by using organic monad unsaturation carboxylic acid on the technology base, induces organic saturation dyadic carboxylic acid and end carboxy liquid nitrile butadiene rubber soft radical to improve the tenacity of the resin. The broken specific elongation 8-16%, impact intension is 20-30KJ / m2. It could satisfy the special need in fiberglass-reinforced plastics industry. The invention is simple structure, no tree wastes, and has good stability.

Description

technical field [0001] The invention relates to a high-toughness epoxy vinyl ester resin and a synthesis process thereof. Background technique [0002] Epoxy vinyl ester resins contain vinyl ester groups at both ends of the molecule, and the middle skeleton is epoxy resin, which are obtained by ring-opening esterification of unsaturated organic monocarboxylic acid and epoxy resin. Epoxy vinyl ester resin has both the excellent corrosion resistance and mechanical properties of epoxy resin, and the convenient processing performance of unsaturated polyester resin. At present, it has become the main matrix material of corrosion-resistant FRP products. It has a wide range of applications. Wide, throughout the chemical industry, metallurgy, construction and other sectors of the national economy in the field of anti-corrosion. [0003] Although the overall performance of epoxy vinyl ester resin is excellent, some aspects of performance, such as impact s...

Claims

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Application Information

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IPC IPC(8): C08G59/16
Inventor 周润培茆凌峰
Owner HUACHANG POLYMER EAST CHINA UNIV OFSCI & TECH
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