M40J/CE/EP复合材料出气性能研究

通过地面环境模拟实验,分析了高模碳纤维/环氧树脂改性氰酸酯复合材料(M40J/CE/EP)的表面元素,研究了高真空加热环境下复合材料的真空出气性能和出气气体成分.结果表明,M40J/CE/EP复合材料的表面主要由C、O、N元素构成;经高真空加热后,复合材料的出气气体成分以小分子挥发物和碳氢化合物电离碎片为主,有可能在空间低温条件下冷凝在航天器的敏感器件表面而造成污染;通过真空出气性能实验测得,M40J/CE/EP复合材料的总质量损失(TML)的平均值为0.27%,收集到的可凝挥发物(CVCM)为0,完全达到出气筛选合格的指标要求.

Study on Outgassing Properties of M40J/CE/EP Composite

With environmental simulation experiments in the ground,surface elements of high modules carbon fiber/epoxy modified cyanate ester resin composite(M40J/CE/EP) are analyzed.Outgassing properties in vacuum and gas compositions of composite under high vacuum and heating environment are also studied.The results show that surface elements of M40J/CE/EP composite are mainly composed of C,O and N.After heating under high vacuum conditions,outgass compositions of composite mainly consist of low-molecule volatile substances and hydrocarbon ionization fragments.These low-molecule substances and fragments can probably be condensed on the surface of sensitive spacecraft devices and may pollute them under low temperature space conditions.Further vacuum outgassing experimental results indicate that total mass loss(TML) of M40J/CE/EP composite is 0.27% and collected volatile condensed material(CVCM)is 0.Therefore,M40J/CE/EP composite is completely qualified to meet the outgassing screening requirement.