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Preparation and properties of imidazole-containing polyimide/silica hybrid films

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Abstract

Imidazole-containing polyimide/silica(PI/SiO2) hybrid films were prepared from 3,3′,4,4′-biphenyltetra-carboxylic dianhydride(BPDA) and 2,2′-di(p-aminophenyl)-5,5′-bibenzimidazole in N,N-dimethylacetamide(DMAc) by sol-gel method and thermal imidization. The hybrid film with high silica mass fraction up to 40% was transparent. Scanning electron microscope(SEM) and transmission electron microscope(TEM) results of the film indicate a homogeneous dispersion of silica nanoparticles in the polyimide matrix. One hybrid film PI/SiO2 with 15% SiO2 exhibits better mechanical properties with a tensile strength of 222 MPa, an elongation at break of 12%, and a tensile modulus of 5.66 GPa. The reinforced mechanism on mechanical properties was also studied.

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Authors and Affiliations

  1. Polymer Composite Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China

    Xiaoye Ma, Xuepeng Qiu, Fangfang Liu, Rizhe Jin, Chuanqing Kang, Haiquan Guo & Lianxun Gao

  2. CAST-Xi’an Institute of Space Radio Technology, China Academy of Space Technology, Xi’an, 710000, P. R. China

    Xiaofei Ma

Authors
  1. Xiaoye Ma
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  2. Xiaofei Ma
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  3. Xuepeng Qiu
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  4. Fangfang Liu
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  5. Rizhe Jin
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  6. Chuanqing Kang
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  7. Haiquan Guo
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  8. Lianxun Gao
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Corresponding author

Correspondence to Xiaoye Ma.

Additional information

Supported by the National Natural Science Foundation of China(No.21104085), the National High Technology Research and Development Program of China(No.2012AA03A211) and the Major State Basic Research Development Program of China (No.2014CB643603).

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Ma, X., Ma, X., Qiu, X. et al. Preparation and properties of imidazole-containing polyimide/silica hybrid films. Chem. Res. Chin. Univ. 30, 1047–1050 (2014). https://doi.org/10.1007/s40242-014-4242-4

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  • DOI: https://doi.org/10.1007/s40242-014-4242-4

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