石墨纤维/改性氰酸酯复合材料的应用研究

采用环氧树脂对4,4-二氰酸酯基二苯基丙烷(BADCy)进行共聚改性,通过DSC分析,确定了固化工艺参数,并与石墨纤维(UHMCF)复合制成单向板,测试了不同后处理温度制得的单向板力学性能,并与现用UHMCF/树脂基复合材料单向板的力学性能进行了比较,测试了UHMCF/改性氰酸酯的空间环境性能;制备了UHMCF/改性氰酸酯结构件,测试其性能,并与现用UHMCF/树脂基复合材料同类结构件的性能进行了比较。结果表明:UHMCF/改性氰酸酯不论是单向板还是结构件的性能均优于现用UHMCF/树脂基复合材料的性能,且满足空间环境对航天器结构材料性能的要求。

Application of UHMCF/Modified Cyanate Composites

In this paper the cure parameter of a certain BADCy co-polymerized with epoxy resin was confirmed by DSC. And the mechanical characteristics of UHMCF carbon fiber reinforced BADCy matrix unidirectional laminates manufactured in different post-cured temperatures were measured and compared with the UHMCF/resin unidirectional laminates which was used widely. Also the experimental results of the space environmental characteristics of UHMCF/modified cyanate was expressed. Structures of UHMCF/modified cyanate were produced and their properties were measured and the results were compared with the characteristics of the normal UHMCF/resin structure.The results show that the characteristics of both UHMCF/modified cyanate unidirectional laminates and structures are better than those of normal UHMCF/resin and the UHMCF/modified cyanate, as a new kind of spacecraft structure material, is adaptable to the requests of space environment.