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Cyanate ester resin prepolymer with excellent space environment property, and prepreg, preparation method and application thereof

A cyanate resin, space environment technology, applied in coatings, adhesives, etc., can solve the problems of no prepreg and composite material space environment characteristics, and no solution to prepreg and composite material space environment characteristics, etc., to achieve excellent space environment. The effect of high performance, excellent performance and low porosity

Inactive Publication Date: 2016-03-02
BEIJING SATELLITE MFG FACTORY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] None of the above-mentioned related studies has solved the problem of the space environment characteristics of prepregs and composite materials, and there is no report on the space environment characteristics of prepregs and composite materials. A report on cyanate ester resin prepreg of oxane and its composite material

Method used

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  • Cyanate ester resin prepolymer with excellent space environment property, and prepreg, preparation method and application thereof
  • Cyanate ester resin prepolymer with excellent space environment property, and prepreg, preparation method and application thereof
  • Cyanate ester resin prepolymer with excellent space environment property, and prepreg, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0116] DMA test

[0117] RheometriScientificTM DMTAV dynamic mechanical analyzer is used, the test frequency is 3Hz, the heating rate is 10°C / min, and the test range is from room temperature to 300°C.

Embodiment 1

[0121] The bisphenol A type cyanate monomer and epoxy POSS, wherein the epoxy POSS is EOVS, its mass content is 0.5% ratio, and the bisphenol A type cyanate monomer mass content is 99.5%, carry out melt blending , the reaction temperature was 160° C., and the reaction time was 12 hours to obtain a cyanate / EOVS prepolymer. The obtained prepolymers were respectively cured and molded according to the curing process of 130°C / 1h→180°C / 2h→190°C / 1h. The Tg of the resulting product is bimodal, being 216°C and 276°C respectively, such as figure 1 shown.

Embodiment 2

[0123] Same as Example 1, except that the mass content of EOVS is 1.0%, and the mass content of bisphenol A type cyanate ester monomer is 99%. 237°C, 283°C. Such as figure 1 shown.

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Abstract

The invention relates to a cyanate ester resin prepolymer with excellent space environment property, and a prepreg, a preparation method and application thereof. The prepolymer comprises epoxy-silsesquioxane and cyanate ester resin, wherein the mass percentage of the epoxy-silsesquioxane is 0.5 to 8%, preferably 0.5 to 5%; and the mass percentage of the cyanate ester resin is 92 to 99.5%, preferably 95 to 99.5%. The preparation method for the prepolymer comprises the following steps: mixing the epoxy-silsesquioxane and the cyanate ester resin, then carrying out heating to 100 to 160 DEG C, and carrying out prepolymerization for 5 to 18 h so as to obtain the prepolymer containing a composition of the epoxy-silsesquioxane and the cyanate ester resin. The prepreg comprises the cyanate ester resin prepolymer and continuous fibers or fabrics, and has higher glass-transition temperature; and products and composite materials prepared from the prepreg have low porosity, small shrinkage and excellent space environment performance, and can be widely applied in a plurality of industries like electronic industry, aviation industry, space industry and national defense military industry.

Description

technical field [0001] The invention relates to a cyanate ester resin prepolymer with excellent space environment characteristics, a prepreg and its preparation method and application. The prepreg can be used to prepare high-performance composite materials, high-performance adhesives and coatings . Background technique [0002] Cyanate resin refers to phenol derivatives containing two or more -OCN functional groups, and is a type of high-performance polymer matrix resin. [0003] There are many ways to synthesize cyanate ester resin monomers, the most commonly used and industrialized method is to prepare cyanate ester monomers by reacting cyanogen halides with phenolic compounds in the presence of alkali. Under the action of heat or a catalyst, the cyanate resin undergoes a three-cyclization reaction to generate a macromolecule with a high cross-linking density network structure containing a triazine ring. The cyanate resin with this structure has the characteristics of lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08L79/04C08J5/24C09J179/04C09D179/04
Inventor 董艺张明赵臻璐黎昱刘佳张玉生李梁徐日炜
Owner BEIJING SATELLITE MFG FACTORY
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