Approach to produce rigid closed-cell polyimide foams

	Approach to produce rigid closed-cell polyimide foams
	Wang LL(王磊磊); Hu AJ(胡爱军); Fan L(范琳); Yang SY(杨士勇)
刊名	High Performance Polymers
	2013
卷号	25 期号:8 页码:956-965
关键词	Closed-cell polyimide foams nadimide end-capped imide oligomers thermal foaming
通讯作者	胡爱军
产权排序	第一
英文摘要	A new chemical approach to prepare rigid closed-cell polyimide foams (PIFs) has been developed by thermal foaming of nadimide end-capped imide oligomers (NAIOs) obtained by thermally treating an in situ polymerization of monomeric reactant (PMR)-type poly(amide ester) resin solution. The PMR poly(amide ester) was synthesized by the reaction of diethyl ester of 2,3,30,40-biphenyltetracarboxylic dianhydride and aromatic diamines using monoethyl ester of cis-5-norbornene-endo-2,3-dicarboxylic acid as reactive end-capping agent in ethyl alcohol. The thermal foaming properties of theNAIOs were investigated. It was found that thermal foaming of theNAIOs was attributed to the blowing of cyclopentadiene, which was evolved fromthermal decomposition of the nadimide end-caps in the imide oligomer by the reverse Diels–Alder reaction during crosslinking of the bisnadimide oligomers. The resultant rigid PIFs showed uniform cellular structures with high closed-cell content (Cc) as well as high thermal stability and mechanical properties. The PIF with a density of 100 kgm 3 and a Cc of 89% exhibited compression strength at 10% compressive deformation of 1.34 MPa and outstanding thermal stabilities, making it a desirable candidate as high temperature structural foam materials for applications in aviation and spacecraft industries.
学科主题	高分子物理化学
公开日期	2015-10-13
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27112]
专题	化学研究所_高技术材料实验室
作者单位	中国科学院化学研究所
推荐引用方式 GB/T 7714	Wang LL,Hu AJ,Fan L,et al. Approach to produce rigid closed-cell polyimide foams[J]. High Performance Polymers,2013,25(8):956-965.
APA	王磊磊,胡爱军,范琳,&杨士勇.(2013).Approach to produce rigid closed-cell polyimide foams.High Performance Polymers,25(8),956-965.
MLA	王磊磊,et al."Approach to produce rigid closed-cell polyimide foams".High Performance Polymers 25.8(2013):956-965.