CAJ | 학술논문

用机械共混、冷压成型、烧结的方法制备聚苯硫醚（PPS）和纳米 Al2 O3填充聚四氟乙烯（PTFE）复合材料试样；用 MRH-3型环-块试验机测试在干摩擦条件下各试样的摩擦磨损性能；用 SEM对试样的磨损表面与转移膜表面的形貌进行观察和分析，并探讨磨损机制。结果表明：PPS 质量分数为5％时，PPS /PTFE 复合材料的摩擦因数和体积磨损率均达到最小值；纳米 Al2 O3的加入进一步改善了 PPS /PTFE 复合材料的摩擦学性能，当其质量分数为5％时，纳米 Al2 O3/PPS /PTFE 复合材料体积磨损率最小，耐磨性较纯 PTFE 提高了276倍。扫描电子显微镜显示，室温下 PT-FE、PPS /PTFE 和纳米 Al2 O3/PPS /PTFE 复合材料的磨损机制主要是黏着磨损，而150℃时纳米 Al2 O3/PPS /PTFE 复合材料伴有磨粒磨损。
용궤계공혼、냉압성형、소결적방법제비취분류미（PPS）화납미 Al2 O3전충취사불을희（PTFE）복합재료시양；용 MRH-3형배-괴시험궤측시재간마찰조건하각시양적마찰마손성능；용 SEM대시양적마손표면여전이막표면적형모진행관찰화분석，병탐토마손궤제。결과표명：PPS 질량분수위5％시，PPS /PTFE 복합재료적마찰인수화체적마손솔균체도최소치；납미 Al2 O3적가입진일보개선료 PPS /PTFE 복합재료적마찰학성능，당기질량분수위5％시，납미 Al2 O3/PPS /PTFE 복합재료체적마손솔최소，내마성교순 PTFE 제고료276배。소묘전자현미경현시，실온하 PT-FE、PPS /PTFE 화납미 Al2 O3/PPS /PTFE 복합재료적마손궤제주요시점착마손，이150℃시납미 Al2 O3/PPS /PTFE 복합재료반유마립마손。
PPS /PTFE and nano-Al2 O3 /PPS /PTFE composites were prepared by molding-sintering method.The tribolog-ical and wear behaviors of nano-Al2 O3 and PPS filled PTFE composites were studied with a MRH-3 block-on ring friction and wear tester.The worn surface and transfer film of the composites were inspected by scanning electronic microscopy (SEM),and the abrasion mechanism was discussed.The results show that the friction coefficient and volume wear rate of the PPS /PTFE composites reach the lowest level with 5% PPS.With the adding of nano-Al2 O3 ,the tribological behavior of PPS /PTFE blends is improved a lot,when nano-Al2 O3 mass fraction is 5%,compared with virgin PTFE,the wear resist-ance is improved more than 276 times.The Scanning Electron Microscope(SEM)result shows the wear mechanisms of vir-gin PTFE,PPS /PTFE composites and nano-Al2 O3 reinforced PPS /PTFE blends are adhesive wear at room temperature,at temperature of 150 ℃,abrasive wear also happens for nano-Al2 O3 reinforced PPS /PTFE.