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Study on high temperature composite properties of ternary fluor rubber filled with nano-cerium oxide

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Abstract

Fluorine rubber (FKM) is often used in bearing seals, bearing seal will be affected by high temperature in the process of use and performance decline. Therefore, in this paper, the effect of CeO2 on the high temperature composite properties of FKM was studied by filling CeO2 nanoparticles into FKM. 5% CeO2/FKM composites were prepared by mechanical blending and hot-pressing process after nano CeO2 was treated with silane coupling agent KH-570. After mechanical and high temperature friction tests of CeO2/FKM composites, the morphology of CeO2/FKM composites was characterized by three-dimensional topography instrument and scanning electron microscope. The mechanical strengthening mechanism and anti-wear and anti-friction mechanism of CeO2 on FKM were expounded. The results showed that the microstructure of Fluor elastomer with CeO2 particles was reinforced, and the defects of fluorine rubber itself were filled. Specifically, compared with the original FKM, the strength of CeO2/FKM composite was improved, in which the tensile strength reached 20.75 MPa, increased by 18.5%, and the tear strength reached 43.44 N/mm, increased by 3.5%. CeO2/FKM composites show outstanding anti-wear and low friction coefficient properties at high temperature (200 °C). The main mechanism is that nano-CeO2 keeps high hardness of FKM, and CeO2/FKM composites have high crosslinking density.

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Funding

This research project was supported by project of scientific and technological innovation talents of universities in Henan Province (19HASTIT023).

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  1. Jiahui Han and Zhen Li contributed equally to this work

Authors and Affiliations

  1. Key Laboratory of Aeronautical Special Rubber, Anyang Institute of Technology, Anyang, 455000, China

    Jiahui Han, Zhen Li, Zehua Xu, Jiwen Wang, Yongwei Ma & Qiang He

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  1. Jiahui Han
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  2. Zhen Li
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  3. Zehua Xu
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  4. Jiwen Wang
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  5. Yongwei Ma
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  6. Qiang He
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Correspondence to Qiang He.

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Han, J., Li, Z., Xu, Z. et al. Study on high temperature composite properties of ternary fluor rubber filled with nano-cerium oxide. J Polym Res 28, 487 (2021). https://doi.org/10.1007/s10965-021-02853-y

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