Studies on characterization and cryogenic mechanical properties of polyimide-layered silicate nanocomposite films

doi:10.1016/j.polymer.2004.08.032

CORC > 化学研究所 > 中国科学院化学研究所

	Studies on characterization and cryogenic mechanical properties of polyimide-layered silicate nanocomposite films
	Zhang, YH ; Wu, JT ; Fu, SY ; Yang, SY ; Li, Y ; Fan, L ; Li, RKY ; Li, LF ; Yan, Q
刊名	POLYMER
	2004-10-13
卷号	45 期号:22 页码:7579-7587
关键词	Polyimide Nanocomposites Cryogenic Mechanical Properties
ISSN号	0032-3861
DOI	10.1016/j.polymer.2004.08.032
英文摘要	Polyimide/layered silicate nanocomposites were prepared via in situ polymerization process from PMDA-ODA and organo-MMT in a solution of NN-dimethylacetamide. XRD, FTIR, UV-vis analyses showed that at the content of 1 wt% MMT, MMT were well intercalated, exfoliated and dispersed in polyimide matrix. As the MMT content is more than 3 wt%, MMT agglomerates became severe as shown by the transparency and transmittance of the hybrid films. The cryogenic mechanical properties of the films at 77 K were studied and compared with those at room temperature. The cryogenic tensile strength showed the highest value at 1 wt% MMT content, and its strength, modulus and elongation at break were simultaneously increased than the pure PI film. The cryogenic elastic modulus exhibited an increasing trend until the MMT content reached 10 wt%. The cryogenic failure strain of hybrid films with 1-3 wt% MMT contents was greater than 10%, showing good ductility at 77 K. The, tensile strength and modulus of the hybrid films at 77 K were generally higher than those at room temperature except at 20 wt% MMT for the strength. (C) 2004 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000224497900022
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/81861]
专题	中国科学院化学研究所
通讯作者	Zhang, YH
作者单位	1.Chinese Acad Sci, Tech Inst Phys & Chem, Cryogen Mat Lab, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 4.City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, YH,Wu, JT,Fu, SY,et al. Studies on characterization and cryogenic mechanical properties of polyimide-layered silicate nanocomposite films[J]. POLYMER,2004,45(22):7579-7587.
APA	Zhang, YH.,Wu, JT.,Fu, SY.,Yang, SY.,Li, Y.,...&Yan, Q.(2004).Studies on characterization and cryogenic mechanical properties of polyimide-layered silicate nanocomposite films.POLYMER,45(22),7579-7587.
MLA	Zhang, YH,et al."Studies on characterization and cryogenic mechanical properties of polyimide-layered silicate nanocomposite films".POLYMER 45.22(2004):7579-7587.