ICCAS OpenIR
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
2004-10-13
Source PublicationPOLYMER
ISSN0032-3861
Volume45Issue:22Pages:7579-7587
AbstractPolyimide/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.
KeywordPolyimide Nanocomposites Cryogenic Mechanical Properties
DOI10.1016/j.polymer.2004.08.032
Indexed BySCI
Language英语
WOS IDWOS:000224497900022
PublisherELSEVIER SCI LTD
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81862
Collection中国科学院化学研究所
Corresponding AuthorZhang, YH
Affiliation1.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
Recommended Citation
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.
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