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首页> 外文会议>International Conference on Engineering Tribology Technology >The Effect of Surface Modification of Polytetrafluoroethylene (PTFE) on the Properties of POM/PTFE fiber composites
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The Effect of Surface Modification of Polytetrafluoroethylene (PTFE) on the Properties of POM/PTFE fiber composites

机译：聚四氟乙烯（PTFE）表面改性对POM / PTFE纤维复合材料性能的影响

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Surface modification of polytetrafluoroethylene (PTFE) fiber by plasma grafting polymerization with acrylamide (AAm) was studied to improve the compatibility between polyacetal (POM) and PTFE. The best modified PTFE manufactured by self-designed plasma polymerization was investigated and denoted as AAm (20wt%)-g (plasma 30min)-PTFE. The grafting polymerization is successful and shown by ESCA spectra of modified PTFE fibers. It is also proved by SEM photographs and the improvement of properties of the POM/PTFE composites. As a result, the friction coefficients, Taber wear factors, and impact strengths of composites with 85wt% of POM and 15wt% of a variety of PTFEs were investigated. The frictional coefficient of POM/ AAm (20wt%)-g (plasma 30min)-PTFE deceased to 0.162; while that of POM/PTFE was 0.174. Taber wear factor of the composite significantly decreased from 5.2 to 1.5 when the PTFE was replaced by AAm-g (plasma)-PTFE. Meanwhile, the impact strength increased from 6.1 kg-cm/cm (POM/PTFE) to 9.3kg-cm/cm (POM/ AAm -g (plasma)-PTFE). Besides, the multi-yield behaviors were found in the Stress-Strain curves of composites with modified PTFE fibers.
机译：研究了聚四氟乙烯（PTFE）纤维通过等离子体接枝聚合用丙烯酰胺（AAM）的表面改性，以改善聚缩醛（POM）和PTFE之间的相容性。研究了通过自行设计等离子体聚合制造的最佳改性的PTFE，并表示为AAM（20wt％） - g（血浆30min）-ptfe。接枝聚合成功并通过改性PTFE纤维的ESCA光谱显示。 SEM照片还通过SEM照片和POM / PTFE复合材料的性能的提高来证明。结果，研究了摩擦系数，Taber磨损因子和具有85wt％POM和15wt％的多种PTF的30wts％的复合材料的冲击强度。 POM / AAM（20wt％） - g（血浆30min）-ptfe的摩擦系数降至0.162;虽然POM / PTFE的虽然为0.174。当PTFE被AAM-G（血浆）-PTFE取代时，复合材料的Taber磨损因子从5.2到1.5显着降低。同时，冲击强度从6.1 kg-cm / cm（pom / ptfe）增加到9.3kg-cm / cm（pom / aam -g（血浆）-ptfe）。此外，在具有改性PTFE纤维的复合材料的应力 - 应变曲线中发现了多屈服行为。

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