Cyanate resin for hot-melt prepregs and preparation method thereof

A technology of cyanate resin and prepreg, applied in the field of prepreg, which can solve the problems that cyanate resin is not suitable for hot-melt prepreg process, etc., and achieve the effect of moderate viscosity, good application prospect and simple process

Inactive Publication Date: 2015-11-11
长春长光宇航复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a cyanate resin for hot-melt prepreg and its preparation method to solve the problem that the existing cyanate resin is not suitable for the hot-melt prepreg process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Comprising the following raw materials in parts by weight:

[0026] 60 parts of modified cyanate ester resins, 40 parts of tougheners;

[0027] Wherein modified cyanate resin comprises the raw material of following weight portion:

[0028] 50 parts of cyanate resin, 20 parts of modifier, 0.0001 part of curing accelerator;

[0029] The cyanate resin is bisphenol A type cyanate resin, phenolic cyanate, dicyclopentadiene bisphenol type cyanate, bisphenol F type cyanate, bisphenol M type cyanate or other One of the multifunctional cyanate esters;

[0030] Described modifying agent is epoxy resin, and epoxy resin is bisphenol A type epoxy resin, novolac epoxy resin, p-aminophenol triglycidyl epoxy resin, amino tetrafunctional epoxy resin or double horse resin a kind of

[0031] The curing accelerator is dibutyl cobalt dilaurate, dibutyl tin dilaurate, dibutyl copper dilaurate, dibutyl zinc dilaurate, cobalt octoate, tin octoate, copper octoate, zinc octoate , manganese ...

Embodiment 2

[0044] Comprising the following raw materials in parts by weight:

[0045] 77.5 parts of modified cyanate ester resins, 22.5 parts of tougheners;

[0046] Wherein modified cyanate resin comprises the raw material of following weight portion:

[0047] 70 parts of cyanate resin, 12.5 parts of modifier, and 0.0005 parts of curing accelerator.

[0048] The cyanate resin is bisphenol A type cyanate resin, phenolic cyanate, dicyclopentadiene bisphenol type cyanate, bisphenol F type cyanate, bisphenol M type cyanate or other One of the multifunctional cyanate esters;

[0049] Described modifying agent is epoxy resin, and epoxy resin is bisphenol A type epoxy resin, novolac epoxy resin, p-aminophenol triglycidyl epoxy resin, amino tetrafunctional epoxy resin or double horse resin a kind of

[0050] The curing accelerator is dibutyl cobalt dilaurate, dibutyl tin dilaurate, dibutyl copper dilaurate, dibutyl zinc dilaurate, cobalt octoate, tin octoate, copper octoate, zinc octoate ,...

Embodiment 3

[0063] Comprising the following raw materials in parts by weight:

[0064] 95 parts of modified cyanate ester resins, 5 parts of tougheners;

[0065] Wherein modified cyanate resin comprises the raw material of following weight portion:

[0066] 90 parts of cyanate resin, 5 parts of modifier, and 0.001 part of curing accelerator.

[0067] The cyanate resin is bisphenol A type cyanate resin, phenolic cyanate, dicyclopentadiene bisphenol type cyanate, bisphenol F type cyanate, bisphenol M type cyanate or other One of the multifunctional cyanate esters;

[0068] Described modifying agent is epoxy resin, and epoxy resin is bisphenol A type epoxy resin, novolac epoxy resin, p-aminophenol triglycidyl epoxy resin, amino tetrafunctional epoxy resin or double horse resin a kind of

[0069] The curing accelerator is dibutyl cobalt dilaurate, dibutyl tin dilaurate, dibutyl copper dilaurate, dibutyl zinc dilaurate, cobalt octoate, tin octoate, copper octoate, zinc octoate , manganese...

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Abstract

The invention relates to a cyanate resin for hot-melt prepregs and a preparation method thereof, belonging to the technical field of hot-melt prepregs. The cyanate resin is composed of 60-95 parts of modified cyanate resin and 5-40 parts of toughener. The cyanate resin for hot-melt prepregs has the advantages of simple technique and no solvent volatilization, and is suitable for industrial production. A hot-melt process can be adopted to prepare the prepreg. The prepreg has favorable manufacturability and long storage period. The prepared cyanate resin fiber composite material has the advantages of higher comprehensive mechanical properties, favorable heat resistance and favorable radiation resistance, can widely satisfy the requirements for high-performance aerospace structure materials, and has favorable application prospects.

Description

technical field [0001] The invention relates to the technical field of prepregs, in particular to cyanate resins for fiber composite material prepregs and a preparation method thereof. Background technique [0002] Cyanate resin (Cyanateresin referred to as CE) is a new type of high-performance resin containing two or more cyanate functional groups (-OCN), which has a high glass transition temperature (240 ° C ~ 280 ° C), low dielectric Electric constant (2.8~3.2) and dielectric loss (0.002~0.008), high thermal stability and low moisture absorption (<1.5%), these excellent properties enable it to meet the stringent requirements of structural / functional composite materials in the aerospace field Requirements, is a high-performance matrix resin with good prospects. For example, the "preparation method of bisphenol A type cyanate resin prepolymer" (publication number CN103145983A) "preparation method of modified cyanate resin and fiber-reinforced modified cyanate-based comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08L63/00C08K7/02C08K3/34C08K7/24
CPCC08L79/04C08L2205/03C08L2205/035C08L2207/53
Inventor 林再文商伟辉刘永琪邹志伟石建军姚振华
Owner 长春长光宇航复合材料有限公司
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