CAJ | 학술논문

通过机械共混、冷压成型、烧结的方法制备聚醚醚酮(PEEK)与纳米 SiO2颗粒共同填充改性聚四氟乙烯(PTFE)复合材料试样。利用 MRH-3型环-块摩擦磨损实验机对不同配方比例的复合材料在不同实验条件下进行摩擦学性能实验。利用扫描电镜对试样磨损后的摩擦表面形貌和钢环表面的转移膜进行观察和分析。结果表明，填充5％PEEK 的 PTFE 复合材料的摩擦系数达到最低值；10％PEEK/PTFE 复合材料中添加不同体积比的纳米 Si O 2填料可以显著地降低材料的体积磨损率，其中5％Nano-SiO2/10％PEEK/PTFE复合材料的体积磨损率最小；载荷和速度的变化对 Nano-SiO2/PEEK/PTFE 复合材料的摩擦磨损性能的影响显著，而环境温度的变化对该复合材料的摩擦系数与磨损率的影响不明显。
통과궤계공혼、냉압성형、소결적방법제비취미미동(PEEK)여납미 SiO2과립공동전충개성취사불을희(PTFE)복합재료시양。이용 MRH-3형배-괴마찰마손실험궤대불동배방비례적복합재료재불동실험조건하진행마찰학성능실험。이용소묘전경대시양마손후적마찰표면형모화강배표면적전이막진행관찰화분석。결과표명，전충5％PEEK 적 PTFE 복합재료적마찰계수체도최저치；10％PEEK/PTFE 복합재료중첨가불동체적비적납미 Si O 2전료가이현저지강저재료적체적마손솔，기중5％Nano-SiO2/10％PEEK/PTFE복합재료적체적마손솔최소；재하화속도적변화대 Nano-SiO2/PEEK/PTFE 복합재료적마찰마손성능적영향현저，이배경온도적변화대해복합재료적마찰계수여마손솔적영향불명현。
PEEK and nano-SiO2 particles synergetic filled PTFE composites were prepared by mechanical blend-ing-molding-sintering method.The tribological behavior of composites with different volume fraction of fillers was tested on different test conditions by a MRH-3 block-on-ring friction and wear tester.The transfer film on counterpart GCr1 5 ring was inspected and anslyzed with scanning electronic microscopy (SEM).The results demonstrated that the lowest friction coefficient was gained when the PTFE composite was filled with only 5%PEEK.The special wear rate of 10%PEEK/PTFE were decreased clearly with filled different contents of nano-SiO2 particles.The special wear rate of the sample with 5% nano-SiO2 and 10%PEEK had the lowest volume wear rete.The load and sliding speed effect significantly on the tribological behavior of nano-SiO2/PEEK/PTFE composites,but the effect of environmental temperature on the friction coefficient and wear rate of the compos-ite is not obvious.