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    Mechanical, thermal and tribological properties of polyimide/nano-SiO2 composites synthesized using an in-situ polymerization

    242297.pdf (1.480Mb)
    Access Status
    Open access
    Authors
    Zhao, Y.
    Qi, X.
    Dong, Yu
    Ma, J.
    Zhang, Q.
    Song, L.
    Yang, Y.
    Yang, Q.
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhao, Y. and Qi, X. and Dong, Y. and Ma, J. and Zhang, Q. and Song, L. and Yang, Y. et al. 2016. Mechanical, thermal and tribological properties of polyimide/nano-SiO2 composites synthesized using an in-situ polymerization. Tribology International. 103: pp. 599-608.
    Source Title
    Tribology International
    DOI
    10.1016/j.triboint.2016.08.018
    ISSN
    1879-2464
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/3680
    Collection
    • Curtin Research Publications
    Abstract

    Polyimide (PI)/nano-SiO2 composites were successfully fabricated via a novel in-situ polymerization. Microstructure, thermal properties, mechanical performance and tribological behaviors of these composites were investigated. The results indicate that nano-SiO2 dispersed homogeneously. Compared with pure PI, thermal stability and heat resistance are higher about 10 °C with the addition of 5 wt% nano-SiO2. Compressive strength and modulus of composite with 5 wt% nano-SiO2 increase by 42.6 and 45.2%, respectively. The coefficient of friction (COF) of composite with 5 wt% nano-SiO2 decrease by 6.8% owing to the thick and uniform transfer films. Excess nano-SiO2 could adversely affect the COF of PI/nano-SiO2 composite. Additionally, wear resistance deteriorates obviously since transfer film exfoliates easily and nano-SiO2 aggregates on the surface of transfer films.

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