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Issue 123, 2015
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Influence of monomer conformation on the mechanical and tribological properties of thermosetting polyimides

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Abstract

A series of thermosetting polyimide oligomers with different diamines (isomers) and same calculated number-average molecular weights (Mn) were synthesized with BPDA (biphenyl-tetracarboxylic acid dianhydride), 4,4′-ODA (4,4′-oxydianiline), 3,4′-ODA (3,4′-oxydianiline) and 4-PEPA (4-phenylethynylphthalic anhydride). Herein, we investigate the effect of monomer configuration on the mechanical, thermal and tribological properties of thermosetting polyimides. Experimental results demonstrate the relationship between molecular configuration and mechanical, thermal and tribological properties. It is revealed that as the content of 4,4′-ODA increases, Tg, Young's modulus and hardness increases and coefficient of friction (COF) and wear rate (WR) decrease under most conditions. Compared with variations of COFs and WRs of TPIs to velocity or load, it is easy to confirm the major influencing factor under different conditions.

Graphical abstract: Influence of monomer conformation on the mechanical and tribological properties of thermosetting polyimides

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Publication details

The article was received on 29 Sep 2015, accepted on 10 Nov 2015 and first published on 13 Nov 2015


Article type: Paper
DOI: 10.1039/C5RA20166G
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RSC Adv., 2015,5, 101533-101543

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    Influence of monomer conformation on the mechanical and tribological properties of thermosetting polyimides

    Y. Wang, L. Tao, T. Wang and Q. Wang, RSC Adv., 2015, 5, 101533
    DOI: 10.1039/C5RA20166G

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