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加压预处理对软质聚酰亚胺泡沫力学性能的影响
崔志刚, 张鑫, 马立
北京卫星制造厂有限公司,北京 100094
摘要:
为解决软质聚酰亚胺泡沫初始状态力学性能的不稳定性,采用Solimide® AC-550聚酰亚胺泡沫分别进行不同加压方式及加压压力的预压处理,并对预压处理的试样进行拉伸和压缩性能测试。结果表明:负压预处理对该泡沫所造成的力学性能损伤比正压更大;且在+4 kPa预处理时,可使得该泡沫获得相对稳定的力学性能,满足工程应用的需求。
关键词:  聚酰亚胺泡沫  预处理方法  加压  力学性能
DOI:10.12044/j.issn.1007-2330.2019.03.010
分类号:
基金项目:十三五民用航天项目D020208十三五民用航天项目(D020208)
Effect of Pressure Pretreatment on Mechanical Properties of Soft Polyimide Foam
CUI Zhigang, ZHANG Xin, MA Li
Beijing Spacecraft Factory,Beijing 100094
Abstract:
In order to solve the mechanical instability of the initial state of soft polyimide foam, the Solimide® AC-550 polyimide foam was used for different pressure and pressure pretreatment respectively, and the tensile and compressive properties of the pretreated samples were tested.The results show that the negative pressure pretreatment damages the mechanical properties caused by the foam,and the pre-treatment at +4 kPa can make the foam obtain relatively stable mechanical properties and meet the needs of engineering applications.
Key words:  Polyimide foam  Pretreatment method  Pressure  Mechanical property