前驱体粉末法制备聚酰亚胺泡沫压缩变形研究  

Study on compression set of polyimide foam prepared by precursor powder process

作　　者：酒永斌[1] 翟宇[1] 王方颉[2] 刘暘[1] 曹巍[1] 翟彤[1] 王连才[1] 

机构地区：[1]辐射新材料北京市重点实验室,北京市射线应用研究中心,北京100015 [2]航天材料及工艺研究所,北京100076

出　　处：《化工新型材料》2017年第11期109-111,共3页New Chemical Materials

基　　金：北京市优秀人才项目(2014400685627G0000)

摘　　要：利用前驱体粉末法制得不同聚酰亚胺泡沫在0.1MPa、不同温度下处理22h,去除载荷后观察了聚酰亚胺泡沫的压缩变形变,然后将样品放置于原温度继续处理22h,以观察压缩变形是否降低;结果表明,在0.1MPa的载荷下,处理温度越高,泡沫压缩变形越大,去除载荷后,再在原温度下处理22h,泡沫的压缩变形量明显降低,同时具有较高玻璃化转变温度(Tg)的酮酐/异构联苯酐混酐型泡沫的厚度尺寸可恢复至原厚度的94.5%。Compression set of different polyimide foams prepared by precursor powder process were conducted after being placed under 0.1 MPa for 22 hat different temperature.Then the polyimide foams were placed under different temperature for another 22 hto check that whether compression set was reduced.The results showed that the compression set increased with temperature increasing while under the burden of 0.1 MPa.After removal of the burden,the compression set of foams reduced obviously after being placed under different temperature,it was also observed that thickness of polyimide foam could be 94.5% of original thickness after the process which was made from BTDA/α-BPDA mixed dianhydride.

关 键 词：聚酰亚胺泡沫 载荷 温度 压缩变形 

分 类 号：TQ328[化学工程—合成树脂塑料工业]