文章摘要
甲基硅油微胶囊/聚苯乙烯复合材料及其摩擦学性能
Preparation and Tribological Properties of Methyl Silicone Oil Microcapsule/Polystyrene Composites
  
DOI:10.16865/j.cnki.1000-7555.2017.09.015
中文关键词: 微胶囊  聚苯乙烯  复合材料  摩擦磨损  自润滑
英文关键词: microcapsules  polystyrene  composites  friction and wear  self-lubricating
基金项目:国家自然科学基金资助项目(51465036);甘肃省省青年科技基金(1506RJYA089)
作者单位
杨保平,李鑫,慕波,崔锦峰,郭军红,陈丽 兰州理工大学石油化工学院,甘肃 兰州 730050 
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中文摘要:
      以甲基硅油为芯材,三聚氰胺-甲醛树脂为壁材,采用原位聚合法合成了具有自润滑功能的微胶囊(MCLMs);以苯乙烯(St)为单体、偶氮二异丁腈(AIBN)为引发剂、MCLMs为功能填料通过本体浇注法制备了MCLMs/聚苯乙烯(PS)复合材料。采用扫描电镜、透射电镜、纳米压痕仪表征了MCLMs的表观形貌和壳层硬度,通过高速环块摩擦磨损试验机、热重分析和万能试验机评价了复合材料的摩擦磨损性能、热稳定性能和力学性能,对复合材料的磨损形貌进行了观察。结果表明,添加质量分数为15%的MCLMs复合材料在100N,50r/min下的摩擦系数为0.22,磨损率降低92%;MCLMs对聚苯乙烯基体增韧效果显著。
英文摘要:
      In this work, self-lubricating functional microcapsules (MCLMs) containing methyl silicone oil as core materials, were prepared with poly (melamine-formaldehyde) (PMF) as shell material by in-situ polymerization method and the MCLMs/polystyrene (PS) composites were synthesized through bulk polymerization method using styrene (St) as monomer, azodiisobutyronitrile (AIBN) as initiator and MCLMs as functional filler. And the morphology and mechanical properties of MCLMs were observed by SEM, TEM and nano-indenter. They were further adopted as filler to improve the tribological properties of polystyrene composites and the tribological behaviors of the polystyrene composites filled with MCLMs were investigated by block-on-ring wear tester. The mechanical properties and thermal stability of the composites were evaluated by microcomputer control electronic universal testing machine and TGA. The results show that the friction coefficient of MCLMs/PS composites is 0.22 and wear rate decreases 92% under100 N, 50 r/min, when the mass fraction of MCLMs added is 15%; meanwhile, toughening effect of MCLMs is remarkable.
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