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- 2018
一种氰酸酯-环氧树脂作为卫星结构件复合材料基体的评价
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Abstract:
制备了氰酸酯树脂质量分数为75%的氰酸酯-环氧树脂（CE75）及高模碳纤维增强CE75（CF/CE75）的复合材料，研究了该树脂的工艺性，确定了其固化制度，考察了树脂的耐热性和力学性能，并在模拟空间环境条件下，考察了高模CF/CE75复合材料管件的力学性能和真空逸气性能。试验结果表明，CE75树脂具有良好的工艺性，适合湿法缠绕成型工艺。CE75树脂固化物表现出良好的耐热性，其玻璃化转变温度为195.6℃，起始热分解温度为368.6℃。高模CF/CE75复合材料抗空间环境性能优异，在真空环境下，复合材料真空逸气性能满足航天标准要求，经冷热循环（-196~130℃）200次后，管件力学性能保持率大于96%。高模CF/CE75复合材料是抗空间环境材料的理想候选材料。 Cyanate ester-epoxy resin(CE75) with 75% cyanate ester's mass fraction and high modulus carbon fiber reinforced CE75 resin (CF/CE75) composites were prepared. The processing property, cure schedule, thermal stability and mechanical properties of CE75 resin were studied. Furthermore, high modulus CF/CE75 composites were treated in simulated space environment, and then the mechanical properties and outgassing properties were investigated. The results show that CE75 resin possesses excellent processing properties, which are suitable for wet winding molding. The glass transition temperature and the initial decrease temperature of storage modulus of the CE75 resin are 195.6℃ and 368.6℃, respectively, indicating that the CE75 resin has good thermal properties. High modulus CF/CE75 pipes also presents excellent space-environment-resistant properties. After being exposed to vacuum condition, the outgassing behavior of the composites achieves the international standards. The results of thermal cycling test (-196-130℃) shows that the mechanical properties of pipes remain more than 96% after 200 cycles. Therefore, high modulus CF/CE75 composites will be a potential ideal candidate for the space-environment-resistant composites. 装备预研航天科技联合基金（6141B06300201）
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