碳纳米管／粉末丁苯橡胶复合材料改性聚丙烯  

Polypropylene composites having carbon nanotubes and powder styrene-butadiene rubber

作　　者：周湘文[1,2] 熊国平[3] 朱跃峰[3] 梁吉[3] 董建令[1] 于溯源[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084 [2]清华大学机械工程系,先进成形制造教育部重点实验室,北京100084 [3]清华大学机械工程系先进成形制造教育部重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2008年第12期2102-2105,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(10332020)

摘　　要：为获得性能优良的复合材料,利用辐射交联和喷雾干燥法,制备全硫化交联碳纳米管(CNT s)/粉末丁苯橡胶(SBR)复合材料,用熔融共混法对聚丙烯进行三元体系改性。结果表明:当SBR、CNT s和苯甲酸钠(相对于纯PP的质量)用量分别为15%、2%和2%时,改性后PP的冲击韧性提高了120%,拉伸强度提高了6%,扯断伸长率提高了55%,弯曲强度提高了20%。Vulcanized carbon nanotubes （CNTs） and styrene-butadiene rubber （SBR） composite powders were added to polypropylene （PP） using the melting mixing method to obtain modified composites with better properties. The powders were cross-linked using electron beam radiation and prepared using spray drying. Test results show that with an SBR loading （mass fraction to pure PP） of 15%, CNTs loading of 2%, and sodium benzoate loading of 2%, the impact strength is improved by 120%, tensile strength is improved by 6%, elongation at break is improved by 55%, and flexural strength of the modified PP is improved by 20%, compared with pure PP.

关 键 词：聚丙烯 碳纳米管 粉末丁苯橡胶 冲击韧性 

分 类 号：TB33[一般工业技术—材料科学与工程] TQ316.6[化学工程—高聚物工业]