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固化工艺参数对聚酰亚胺复合材料性能影响
崔超, 郭鸿俊, 张军, 潘玲英, 赵伟栋
航天材料及工艺研究所, 北京 100076
摘要:
采用热压罐成型工艺制备了MT300/902聚酰亚胺复合材料,测试了加压温度、加压大小和固化温度下复合材料的力学性能,分析了不同固化工艺参数对复合材料力学性能的影响规律。结果表明:MT300/902聚酰亚胺复合材料固化时的最佳加压时机为240~260℃、加压不小于1.2 MPa、固化温度在310~330℃为最佳。按照最优的成型工艺参数制备的复合材料构件质量高,缺陷能够控制在2%以下,力学性能进一步提高。
关键词:  聚酰亚胺  耐高温  复合材料  固化工艺
DOI:10.12044/j.issn.1007-2330.2018.05.008
分类号:TB33;V45
基金项目:
Influence of Process Parameters on Properties of Polyimide Composite
CUI Chao, GUO Hongjun, ZHANG Jun, PAN Lingying, AO Weidong
Aerospace Research Institute of Materials & Processing Technology, Beijing 100076
Abstract:
A kind of MT300/902 polyimide composite was prepared by autoclave molding process, and the effect of three different process parameters (pressing temperature, pressure, curing temperature) on mechanical properties were examined. The influence of process parameters on properties of polyimide composite was studied. According to the results, the best pressing temperature of MT300/902 polyimide composite was 240~260℃, pressure range was not lower than 1.2MPa, and the best curing temperature was 310~330℃. Using the best process parameters, MT300/902 polyimide composite with better mechanical properties and high quality (defect area is less than 2%) than the original and polyimide composite structures were prepared.
Key words:  Polyimide  High temperature resistant  Composites  Process