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原位聚合法浇注型聚氨酯弹性体/纳米二氧化硅复合材料的性能
Properties of in-situ polymerized casting polyurethane/nano-silica composites
【摘要】 采用原位聚合法制备了浇注型聚氨酯弹性体(CPUE)/纳米SiO2复合材料,研究了牌号分别为Aerosil R 972和Aerosil 200的气相法纳米SiO2在基于聚四氢呋喃醚二醇(PTMG)、聚己内酯二醇(PCL)体系CPUE中的分散性、贮存稳定性以及复合材料的热稳定性和物理机械性能。结果表明,Aero-sil R 972在PTMG和PCL体系中均有较好的分散性和贮存稳定性;Aerosil 200在PCL体系中具有较好的分散性和贮存稳定性,而在PTMG体系中则相对较差。2种纳米SiO2的添加均能提高复合材料的热稳定性,并能显著增强、增韧和提高复合材料的高温使用性能。
【Abstract】 The casting polyurethane(CPUE)/nano-SiO2 composites were prepared via in-situ polymerization.The dispersity and storing stability of fumed nano-SiO2(Aerosil R 972 and Aerosil 200) in CPUE based on polytetramethylene glycol(PTMG) and poly(ε-caprolactone diol)(PCL),the thermal stability and mechanical properties of composites were investigated.The results showed that the dispersity and storing stability of Aerosil R 972 were better in both PTMG and PCL systems,Aerosil 200 was better in PCL system,but worse in PTMG system.The thermal stability of composites was improved when adding Aerosil R 972 and Aerosil 200,and high temperature performance of them was improved and reinforced significantly.
【Key words】 casting polyurethane elatomer; nano-silica; in-situ polymerization; composite; dispersity; thermal stability;
- 【文献出处】 合成橡胶工业 ,China Synthetic Rubber Industry , 编辑部邮箱 ,2009年02期
- 【分类号】TQ334.1
- 【被引频次】21
- 【下载频次】546