静电纺丝制备SiO_2短纤维对聚丙烯冲击性能的影响  

Influences of the Impact Property of Nano-SiO_2 Fiber/Polypropylene Composite by Electrospun Short SiO_2 Fiber

作　　者：朱元超[1] 温世鹏[2] 徐日炜[3] 张立群[1] 刘力[3] 

机构地区：[1]北京化工大学碳纤维及功能高分子材料教育部重点实验室 [2]纳米材料教育部重点实验室,北京100029 [3]北京市新型高分子材料制备与加工重点实验室

出　　处：《高等学校化学学报》2010年第10期2088-2092,共5页Chemical Journal of Chinese Universities

基　　金：国家“十一五”支撑项目(批准号:2006BAE03B);长江学者和创新团队发展计划(批准号:IRT0807)资助

摘　　要：采用静电纺丝技术,结合正硅酸乙酯(TEOS)的溶胶-凝胶反应制备出了直径为500nm的SiO2短纤维(n-SF).纤维经过硅烷偶联剂KH570表面处理后,与聚丙烯(PP)通过螺杆混合制得复合材料.通过SEM观察,KH570处理过的SiO2短纤维(n-MSF)在PP基体中分散均匀,界面结合良好.DSC和XRD测试结果表明,n-SF和n-MSF的加入均可提高PP的结晶速率,同时改变PP中β晶含量,进而影响冲击强度;冲击实验结果表明,n-MSF添加量为3%(质量分数)时,复合材料冲击性能比纯PP提高了40.3%.The short SiO2 fibers with the diameter of 500 nm were prepared via electrospinning combined with sol-gel of TEOS.After short SiO2 fibers treated with silane coupling agent KH-570,modified nano-SiO2 fiber/polypropylene（n-MSF/PP） composite was obtained by extruding and injecting.SEM observation shows that the interface of short SiO2 fiber and PP matrix is fine and distribution status of SiO2 short fiber in PP matrix is uniform.The DSC and XRD characterization demonstrate that the crystal velocity of n-MSF/PP composite increases and β crystalloid content varies compared with that of neat PP.The impact test shows that the impact property of n-MSF/PP composite increases 40.3% than that of pure PP,when n-MSF content in SiO2 short fiber is 3%.

关 键 词：静电纺丝 SiO2短纤维 聚丙烯 抗冲击性能 

分 类 号：O631[理学—高分子化学]