Ji Shijun, Sun Changrui, Zhao Ji, Liang Fusheng
School of Mechanical Science and Engineering, Jilin University, Changchun 130025, China.
Materials (Basel). 2015 Jul 7;8(7):4118-4130. doi: 10.3390/ma8074118.
The aim of this paper is to compare the mechanical property and machinability of Polyetheretherketone (PEEK) and 30 wt% carbon-fibers reinforced Polyetheretherketone (PEEK CF 30). The method of nano-indentation is used to investigate the microscopic mechanical property. The evolution of load with displacement, Young's modulus curves and hardness curves are analyzed. The results illustrate that the load-displacement curves of PEEK present better uniformity, and the variation of Young's modulus and hardness of PEEK both change smaller at the experimental depth. The machinability between PEEK and PEEK CF 30 are also compared by the method of single-point diamond turning (SPDT), and the peak-to-valley value (PV) and surface roughness (Ra) are obtained to evaluate machinability of the materials after machining. The machining results show that PEEK has smaller PV and Ra, which means PEEK has superior machinability.
本文旨在比较聚醚醚酮（PEEK）和30重量%碳纤维增强聚醚醚酮（PEEK CF 30）的机械性能和可加工性。采用纳米压痕法研究微观机械性能。分析了载荷随位移的变化、杨氏模量曲线和硬度曲线。结果表明，PEEK的载荷-位移曲线具有更好的均匀性，在实验深度下，PEEK的杨氏模量和硬度变化较小。还通过单点金刚石车削（SPDT）方法比较了PEEK和PEEK CF 30之间的可加工性，并获得峰谷值（PV）和表面粗糙度（Ra）以评估加工后材料的可加工性。加工结果表明，PEEK具有较小的PV和Ra，这意味着PEEK具有优异的可加工性。
