Modified cyanate ester resin surface film and preparation method thereof

A technology of cyanate ester resin and surface film, applied in the direction of coating, etc., can solve the problems of low long-term use temperature, inconsistent curing temperature, poor matching of prepreg, etc., to increase resin toughness, interface bonding and adhesion The effect of increasing the junction strength and increasing the ability to resist microcrack propagation

Active Publication Date: 2015-12-09
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems of poor matching between the surface film of the existing epoxy composite material and the prepreg of cyanate resin, resulting in inconsistent curing temperature, low long-term use temperature, and substandard dielectric properties of the workpiece.

Method used

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  • Modified cyanate ester resin surface film and preparation method thereof
  • Modified cyanate ester resin surface film and preparation method thereof
  • Modified cyanate ester resin surface film and preparation method thereof

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specific Embodiment approach 1

[0020] Specific implementation mode one: a modified cyanate ester resin surface film according to the present embodiment, which is composed of 75 to 100 parts of cyanate resin, 25 to 40 parts of copolymerization process modifier, 10 to 25 parts by weight. It consists of 1-4 parts of toughening modifier, 2-4 parts of curing accelerator, 1-3 parts of coupling agent, 1-4 parts of inorganic filler, 1-5 parts of UV stabilizer and carrier.

specific Embodiment approach 2

[0021] Specific embodiment two: this embodiment is different from specific embodiment one: cyanate resin is made of bisphenol A type cyanate resin, novolac type cyanate resin and bisphenol F type cyanate resin by mass ratio Composed in a ratio of 5:3:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the copolymerization process modifier is modified by diallyl bisphenol S bismaleimide resin and diallyl bisphenol A modified bismaleimide resin is composed of a mass ratio of 2:1. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a modified cyanate ester resin surface film and a preparation method thereof, relates to a resin surface film and a preparation method thereof, and solves the problems that an existing epoxy composite surface film and cyanate ester resin prepreg are not matched well, as a result, the curing temperature is inconsistent, the long-term working service temperature is low, the dielectric property of a workpiece cannot meet the standard and the like. The cyanate ester resin surface film comprises cyanate ester resin, a polymerization process modifier, a toughening modifier, a curing accelerator, a coupling agent, inorganic filler, UV (ultraviolet) stabilizer and a carrier. The preparation method of the cyanate ester resin surface film comprises steps as follows: cyanate ester resin and the modifier are kneaded, and copolymerized and modified cyanate ester resin is obtained; the toughening modifier, the coupling agent, the inorganic filler and the UV stabilizer are added and mixed, and a modified cyanate ester resin surface film adhesive is obtained; a three-roller rotating coating film making machine is adopted for film forming. The modified cyanate ester resin surface film is used for improving the surface quality of a cyanate ester resin composite structural member.

Description

technical field [0001] The invention relates to a modified cyanate resin surface film and a preparation method thereof. Background technique [0002] Cyanate resin composite materials are widely used in the aerospace field due to their excellent heat resistance, mechanical properties, dimensional stability, moisture resistance, and low dielectric properties, such as aircraft stealth structures, high-performance radome structures, etc manufacture. [0003] In order to give full play to the weight-reducing advantages of composite materials in aerospace structures, and to solve the problem of surface quality of composite components, countries all over the world use surface films to improve the surface quality of composite components. For example, FM99 and SUPERMASTER905 from Cytec in the United States, EA9845, EA9895 and EA9837.1 from Henkel in Germany, and J-266 surface film materials from the Petrochemical Research Institute of Heilongjiang Academy of Sciences. Features suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/04C09D7/12C08G73/06C08L79/04C08L79/08C08L53/00C08K13/04C08K5/3445C08K5/5435C08K7/28C08K3/22
Inventor 李洪峰张杨曲春艳王德志刘长威宿凯杨海冬冯浩肖万宝王海民
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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