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M-benzene type epoxy vinyl ester glass fiber reinforced plastic resin and synthetic method thereof

A technology of epoxy vinyl ester and glass fiber reinforced plastic resin, which is applied in the field of polymer compound synthesis, can solve problems such as unsatisfactory, limited tolerance, and decreased strength of resin materials, and achieve good acid and alkali corrosion resistance, excellent toughness, and no The effect of wastewater

Inactive Publication Date: 2016-03-02
ZHANGZHOU YABANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the traditional bisphenol A type epoxy vinyl ester resin has good corrosion resistance and temperature resistance, it is still not ideal. For the corrosive environment above 100 °C, not only the tolerance is limited, but also the strength of the resin material is high. drop in magnitude

Method used

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  • M-benzene type epoxy vinyl ester glass fiber reinforced plastic resin and synthetic method thereof
  • M-benzene type epoxy vinyl ester glass fiber reinforced plastic resin and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A, 455g epoxy resin E44, 49.8g isophthalic acid, 4.17g benzyltriethylammonium bromide are dropped into in the four-necked flask with thermometer, stirrer, vertical condenser successively, start to stir;

[0025] B. Raise the temperature to 170°C until the reaction is clear, then keep it warm for 1 hour until the acid value is between 4-5mgKOH / g;

[0026] C. Cool down to 110°C, add 0.21g o-methyl hydroquinone and 0.15g tert-butyl p-methylphenol in turn, add 120.4g methacrylic acid dropwise using a dropping funnel, and control the rate of methacrylic acid addition at The dropwise addition is completed within 1 hour; after the drop is completed, it is kept at 110°C for 3 hours until the acid value is between 18-20mgKOH / g;

[0027] D. Cool down to 85°C, add 764.1g styrene to dilute, after dilution, keep warm at 60°C, stir for 45 minutes until uniform, filter to obtain yellow transparent viscous liquid, i.e. isophthalic epoxy vinyl ester FRP resin.

Embodiment 2

[0029] A. Put 117kg epoxy resin E51, 19.9kg isophthalic acid, and 0.34kg benzyldimethylamine into the reaction kettle in turn, and start stirring;

[0030] B. Raise the temperature to 175°C until the reaction is clear, keep it warm for 1 hour until the acid value is between 4-5mgKOH / g;

[0031] C. Cool down to 110°C, add 0.068kg hydroquinone and 0.068kg tert-butyl p-methylphenol successively, add 31.0kg methacrylic acid dropwise, and control the acceleration rate of methacrylic acid to add dropwise within 1 hour; at 110 Incubate at ℃ for 3 hours until the acid value is between 14-16mgKOH / g;

[0032] D. Cool down to 90°C, add 167.9kg styrene to dilute, after dilution, keep warm at 55°C, stir for 1 hour until uniform, filter to obtain yellow transparent viscous liquid, i.e. isophthalic epoxy vinyl ester FRP resin.

[0033] Embodiment 1 of the present invention compares with the performance index of common bisphenol A epoxy vinyl ester resin:

[0034]

[0035] Embodiment 2 o...

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Abstract

The invention relates to m-benzene type epoxy vinyl ester glass fiber reinforced plastic resin and a synthetic method thereof. The synthetic method includes the following steps that firstly, epoxy resin, m-phthalic acid and a catalyst are sequentially put into a reaction vessel, and stirring is started; secondly, the temperature is increased to 170-175 DEG C, heat preservation is performed, and after the mixture is reacted to be clear, heat preservation continues to be performed for 1 h till the acid value is lower than 5 mgKOH / g; thirdly, the temperature is decreased to 105-115 DEG C, a polymerization inhibitor and a stabilizer are sequentially added, then methacrylic acid is dripped, the methacrylic acid dripping speed is controlled to finish dripping within 1 h, and after dripping is finished, heat preservation is performed at 120-125 DEG C till the acid value is decreased to 20 mgKOH / g or below; fourthly, the temperature is decreased to 85-90 DEG C, styrene is added for dilution, the temperature continues to be decreased to 55-60 DEG C, stirring is performed for 0.5-1 h at the temperature till evenness is achieved, and filtration is performed. The m-benzene type epoxy vinyl ester glass fiber reinforced plastic resin and the synthetic method thereof have the advantages that the reaction process is steady and controllable, no wastewater is produced, and environmental friendliness is achieved.

Description

technical field [0001] The invention relates to the field of polymer compound synthesis, in particular to a method for synthesizing m-phenylene epoxy vinyl ester FRP resin. Background technique [0002] Epoxy vinyl ester resin is a new type of resin developed in the 1960s. It is a product of addition polymerization of epoxy resin and unsaturated monocarboxylic acid containing double bonds. It combines the strengths of both polyester resin and epoxy resin. The most prominent feature is its excellent anti-corrosion performance, so it is widely used in industrial equipment with high requirements for anti-corrosion. Commonly used in fertilizer factories, non-ferrous metal factories, chlor-alkali factories, textile factories and so on. [0003] Although the traditional bisphenol A type epoxy vinyl ester resin has good corrosion resistance and temperature resistance, it is still not ideal. For the corrosive environment above 100 °C, not only the tolerance is limited, but also the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/42C08G59/17C08F283/10C08F212/08
Inventor 李航昱侯辉
Owner ZHANGZHOU YABANG CHEM
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