Preparation and properties of ternary polyimide/SiO2/polydiphenyisiloxane composite films

doi:10.1002/pi.2078

CORC > 化学研究所 > 中国科学院化学研究所

	Preparation and properties of ternary polyimide/SiO2/polydiphenyisiloxane composite films
	Shang, Zhenping ; Lu, Changli ; Gao, Lianxun
刊名	POLYMER INTERNATIONAL
	2006-11-01
卷号	55 期号:11 页码:1277-1282
关键词	Polyimide Composites Polydiphenylsiloxane Sio2
ISSN号	0959-8103
DOI	10.1002/pi.2078
英文摘要	A series of novel ternary polyimide/SiO2/polydiphenylsiloxane (PI/SiO2/PDPhS) composite films were prepared through co-hydrolysis and condensation between tetramethoxysilane, diphenyldimethoxysilane (DDS) and aminopropyltriethoxysilane-terminated polyamic acid, using an in situ sol-gel method. The composite films exhibited good optical transparency up to 30 wt% of total content of DDS and SiO2. SEM analysis showed that the PDPhS and SiO2 were well dispersed in the PI matrix without macroscopic separation of the composite films. TGA analysis indicated that the introduction of SiO2 could improve the thermal stability of the composite films. Dynamic mechanical thermal analysis showed that the composite films with low DDS content (5 wt%) had a higher glass transition temperature (T-g) than pure PI matrix. When the content of DDS was above 10 wt%, the T-g of the composite decreased slightly due to the plasticizing effect of flexible PDPhS linkages on the rigid PI chains. The composite films with high SiO2 content exhibited higher values of storage modulus. Tensile measurements also showed that the modulus and tensile strength of the composite films increased with increasing SiO2 content, and the composite films still retained a high elongation at break due the introduction of DDS. The density and water absorption of the composite films were also characterized. (C) 2006 Society of Chemical Industry.
语种	英语
出版者	JOHN WILEY & SONS LTD
WOS记录号	WOS:000241203400012
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/58957]
专题	中国科学院化学研究所
通讯作者	Gao, Lianxun
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Grad Sch, Changchun 130022, Peoples R China 2.NE Normal Univ, Inst Chem, Changchun 130024, Peoples R China
推荐引用方式 GB/T 7714	Shang, Zhenping,Lu, Changli,Gao, Lianxun. Preparation and properties of ternary polyimide/SiO2/polydiphenyisiloxane composite films[J]. POLYMER INTERNATIONAL,2006,55(11):1277-1282.
APA	Shang, Zhenping,Lu, Changli,&Gao, Lianxun.(2006).Preparation and properties of ternary polyimide/SiO2/polydiphenyisiloxane composite films.POLYMER INTERNATIONAL,55(11),1277-1282.
MLA	Shang, Zhenping,et al."Preparation and properties of ternary polyimide/SiO2/polydiphenyisiloxane composite films".POLYMER INTERNATIONAL 55.11(2006):1277-1282.