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<p>As an engineering plastic with excellent comprehensive properties, polyoxymethylene (POM) features good corrosion resistance and high specific strength, increasingly replacing metal materials in moving components such as gears and bearings. However, the heat resistance and wear resistance of pure POM still need improvement, which can no longer meet the operational requirements under current high-temperature and high-speed conditions. Therefore, modification of POM is required. In this study, the first use of lotus leaf-derived carbon for POM was reported. Specifically, biomass carbon with different contents was melt-blended with POM in an internal mixer to obtain composite materials. The results indicate that the tensile strength of POM composites with biomass carbon addition decreases to varying degrees compared to pure POM. Conversely, both flexural strength and flexural modulus are significantly enhanced, and the thermal decomposition temperature also exhibits notable increases. Friction and wear tests further validate the lubricating effect of biomass carbon: 0.5% biomass carbon increases the friction coefficient of POM, whereas 1% and 3% additions reduce it by 14.8% and 30%, respectively. Additionally, it was observed that the friction coefficient of the composites decreases with increasing radial load. It is expected to provide new ideas for the performance optimization of POM and offer value for future research on POM.</p>

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Incorporation of biomass carbon to boost mechanical, thermal and tribological properties of polyoxymethylene composites

  • 期刊论文

  • 发表日期：

    2025年9月20日

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  • Jianyu Chen,
  • Jie Guan,
  • Lin Zhu,
  • Kan Zhang

摘要

As an engineering plastic with excellent comprehensive properties, polyoxymethylene (POM) features good corrosion resistance and high specific strength, increasingly replacing metal materials in moving components such as gears and bearings. However, the heat resistance and wear resistance of pure POM still need improvement, which can no longer meet the operational requirements under current high-temperature and high-speed conditions. Therefore, modification of POM is required. In this study, the first use of lotus leaf-derived carbon for POM was reported. Specifically, biomass carbon with different contents was melt-blended with POM in an internal mixer to obtain composite materials. The results indicate that the tensile strength of POM composites with biomass carbon addition decreases to varying degrees compared to pure POM. Conversely, both flexural strength and flexural modulus are significantly enhanced, and the thermal decomposition temperature also exhibits notable increases. Friction and wear tests further validate the lubricating effect of biomass carbon: 0.5% biomass carbon increases the friction coefficient of POM, whereas 1% and 3% additions reduce it by 14.8% and 30%, respectively. Additionally, it was observed that the friction coefficient of the composites decreases with increasing radial load. It is expected to provide new ideas for the performance optimization of POM and offer value for future research on POM.