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Method for preparing bimalieimide resin modified cyanate preimpregnation material

A technology of double horse resin and cyanate ester, which is applied in the field of preparation of double horse resin modified cyanate ester prepreg, can solve the problems of low molecular weight, high crosslinking density of BT resin, poor resin toughness, etc., and achieve high toughness Effect

Inactive Publication Date: 2009-01-07
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the low molecular weight of BMI, the crosslinking density of BT resin is relatively large, the elongation at break is generally less than 5%, and there is also the problem of poor toughness of the resin

Method used

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  • Method for preparing bimalieimide resin modified cyanate preimpregnation material
  • Method for preparing bimalieimide resin modified cyanate preimpregnation material
  • Method for preparing bimalieimide resin modified cyanate preimpregnation material

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Example 1: Take by weighing 30g of bisphenol A type cyanate ester (BCE) resin at room temperature, 70g of M1 resin in a reaction flask, add dioxane and ethylene glycol monomethyl ether with a volume ratio of 4:3:3 , ethylene glycol dimethyl ether mixed solvent 234ml, after refluxing for 5 minutes, a kind of bis-horse resin modified cyanate ester prepreg was obtained.

Embodiment 2

[0017] Example 2: Weigh 30 g of bisphenol A type cyanate ester (BCE) resin and 30 g of M1 resin in a reaction flask at room temperature, and add 140 ml of a mixed solvent of dioxane and ethylene glycol monomethyl ether in a volume ratio of 6:4 After reflux for 30 minutes, a bis-horse resin modified cyanate ester prepreg was obtained.

Embodiment 3

[0018] Example 3: Weigh 30 g of bisphenol A cyanate ester (BCE) resin and 3.33 g of M1 resin in a reaction flask at room temperature, and add a mixed solvent of dioxane and ethylene glycol dimethyl ether in a volume ratio of 5:5 78ml, after refluxing for 60 minutes, a kind of double horse resin modified cyanate ester prepreg was obtained.

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Abstract

The invention provides a preparation method for bismaleimide resin modified cyanate prepreg, Imide-thioether with end capped by maleic anhydrided and cyanate dissolve in one or the mixture of dioxane, ethylene glycol monomethyl ether and glycol dimethyl ether to be heated and stirred to obtain a resin solution used for impregnating fibers. The preparation method has the advantages that bismaleimide resin and cyanate copolymer with good forming processes are adopted, and low boiling point solvents are adopted to be propitious to the preparation of high performance composites; the tensile strength of the composites which are enhanced by glass fibers is more than 300MPa, and the elongation at break is more than 10 percent. Compared with the ordinary bismaleimide resin modified cyanate, the composite of the invention which is prepared by the bismaleimide resin modified cyanate has higher toughness.

Description

technical field [0001] The invention belongs to a preparation method of bis-horse resin modified cyanate ester prepreg. Background technique [0002] Cyanate ester (CE) resin has become an attractive high-performance polymer due to its excellent comprehensive properties. , stealth aircraft and structural composite materials and other high-tech fields. CE is suitable for various molding processes such as compression molding, transfer molding, hot pressing, winding and extrusion. However, the disadvantage of CE is mainly that the cured resin is brittle and the use temperature is low. Japan and China Taiwan prepared a series of modified cyanate ester resins (US Patent 4110364; 5886134) respectively in the 1970s and 1990s, which are copolymerized with bismaleimide resin and cyanate ester. The modified resin is also called BT resin (bismaleimide triazine). The copolymer has good heat resistance, heat and humidity resistance, and low dielectric properties. However, the BT resi...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08G73/12
Inventor 刘敬峰王震杨慧丽孟祥胜范卫峰
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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