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Epoxy resin composition and a preparation method thereof

A technology of epoxy resin and composition, which is applied in the field of resin, can solve the problems that cannot be taken into account at the same time, and achieve the effects of accelerated pultrusion molding speed, convenient source, and excellent mechanical properties

Active Publication Date: 2019-11-29
广东众森实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an epoxy resin composition and its preparation method in view of the technical problem that the existing pultruded epoxy resin cannot simultaneously take into account the technical problem that the glass transition temperature is greater than 150°C and has excellent mechanical properties

Method used

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  • Epoxy resin composition and a preparation method thereof
  • Epoxy resin composition and a preparation method thereof
  • Epoxy resin composition and a preparation method thereof

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preparation example Construction

[0053] Embodiments of the present invention also provide a method for preparing the epoxy resin composition as described in the above embodiments, comprising the following steps:

[0054] Preparation of Epoxy Resin Component A

[0055] a. Add alicyclic epoxy resin and polyphenol glycidyl ether epoxy resin into the reaction kettle, heat and control the temperature of the reaction kettle at 50-100°C, after vacuuming, keep stirring at a speed of 50-150rpm for 60- 120min, stop stirring after the nitrogen breaks the vacuum;

[0056] b. After the reactor is cooled to room temperature, add one or two mixtures of glycidylamine epoxy resin or silicone-modified epoxy resin and additives according to the weight ratio. Stir continuously at a speed of 60-120min, stop stirring after the nitrogen breaks the vacuum, and discharge;

[0057] Preparation of curing agent component B

[0058] a. Synthesis of modified toughening agent: mix acid anhydride and polyether polyol according to the mol...

Embodiment 1

[0066] The parts by weight of each material in the epoxy resin component A are as follows:

[0067]

[0068]

[0069] The parts by weight of each material in curing agent component B are as follows:

[0070] Methyl nadic anhydride 68

[0071] Modified toughening agent (polypropylene glycol modified hexahydrophthalic anhydride with a molecular weight of 2000) 30

[0072] Tetrabutylammonium bromide 2

[0073] Preparation of Epoxy Resin Component A

[0074] a. Add 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate and novolac epoxy resin (epoxy equivalent: 176-181) into the reactor, heat and control the reactor The temperature is 50-60°C, after vacuuming, continue to stir at a speed of 100-150rpm for 60-120min, and stop stirring after nitrogen breaks the vacuum;

[0075] b. After the reaction kettle is cooled to room temperature, add tetraglycidylmethylene diphenylamine, silicone modified epoxy resin and siloxane coupling agent, and continue stirring at a speed o...

Embodiment 2

[0083] The parts by weight of each material in the epoxy resin component A are as follows:

[0084]

[0085] The parts by weight of each material in curing agent component B are as follows:

[0086]

[0087] Preparation of Epoxy Resin Component A

[0088] a. add 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate and triphenolyl methane triglycidyl ether epoxy resin in the reactor, heat and control the reactor temperature at 80-100°C, after vacuuming, continue to stir at a speed of 100-150rpm for 60-120min, stop stirring after nitrogen breaks the vacuum;

[0089]b. After the reactor is cooled to room temperature, add N,N-diglycidyl p-hydroxyaniline, silicone modified epoxy resin and siloxane coupling agent, and keep stirring at a speed of 100-150rpm after vacuuming After 60-120min, the nitrogen gas breaks the vacuum and stops stirring, and the material is discharged to obtain the epoxy resin component A.

[0090] Preparation of curing agent component B

[0091]...

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Abstract

The invention belongs to the technical field of resins, and relates to an epoxy resin composition and a preparation method thereof, wherein the epoxy resin composition comprises an epoxy resin component A and a curing agent component B according to a mass ratio of 100:80-200, the epoxy resin component A comprises, by mass, 10-50 parts of a mixture comprising one or two selected from an glycidyl amine type epoxy resin and an organic silicon modified epoxy resin, 10-50 parts of a polyphenol type glycidyl ether epoxy resin and 20-60 parts of an alicyclic epoxy resin, and the curing agent component B comprises, by mass, 50-90 parts of a liquid anhydride and 10-50 parts of a modified toughening agent. According to the present invention, the organic silicon modified epoxy resin can enhance the high-temperature resistance of the epoxy resin composition, improve the lubricity of the epoxy resin composition, reduce the friction of the product in the mold, accelerate the pultrusion speed, and improve the surface smoothness of the product.

Description

technical field [0001] The invention belongs to the technical field of resins, in particular to an epoxy resin composition and a preparation method thereof. Background technique [0002] Pultrusion is an important manufacturing method for the manufacture of high-performance and low-cost continuous composite products. The matrix resin in pultrusion is required to have the characteristics of fast response, low viscosity, long operating time and strong adhesion. Commonly used matrix resins include unsaturated polyester resins, vinyl ester resins, epoxy resins, phenolic resins or polyurethane resins, etc. Among them, epoxy resin has good fiber interface bonding, simple operation process, excellent mechanical properties and electrical properties. It is widely used in various composite material pultrusion products (hereinafter referred to as products) because of its advantages such as insulation performance. [0003] Due to the development of composite material technology, high ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L63/04C08L71/02C08K5/541
CPCC08L63/00C08L2201/08C08L2205/035C08L2205/025C08L63/04C08L71/02C08K5/541
Inventor 顾红军邓青梅
Owner 广东众森实业发展有限公司
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