PS/SiO2-g-PIP纳米复合材料的制备与性能  

Preparation and properties of PS/SiO2-g-PIP nanocomposites

作　　者：孟寒 汪子健 唐龙祥 MENG Han;WANG Zijian;TANG Longxiang(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥230009

出　　处：《弹性体》2020年第6期34-39,共6页China Elastomerics

摘　　要：采用stǒber法制备氨基化二氧化硅(SiO2)纳米粒子,再通过可逆加成-断裂链转移聚合(RAFT)在其表面接枝聚异戊二烯(PIP),制得SiO2-g-PIP纳米复合粒子,并以此对聚苯乙烯(PS)进行改性。场发射透射电子显微镜(TEM)、傅里叶变换红外光谱(FT-IR)、力学性能、扫描电子显微镜(SEM)、热失重分析(TGA)等测试结果表明,当纳米粒子添加质量分数为2%时,复合材料的拉伸强度和冲击强度都达到最大值,且PS/SiO2-g-PIP复合材料的热稳定性优于纯PS及PS/SiO2复合材料。The aminated nano silica(SiO2)was prepared by the stober method,and the isoprene was grafted onto the surfaces of the silica via reversible addition-fragmentation chain transfer(RAFT)polymerization to prepare SiO2-g-PIP nanocomposite particles with trithioester as a chain transfer agent.The modification of polystyrene with nano SiO2-g-PIP composited particles was studied.The results of transmission electron microscope(TEM),mechanical properties,scanning electron microscope(SEM),Fourier transform infrared spectroscopy(FT-IR)and thermogravimetric analysis(TGA)measurements indicated that when the addition amount of nanoparticles is 2%(mass fraction),the tensile properties and impact properties of the composites reach the maximum.Moreover,the thermal stability of the PS/SiO2-g-PIP composites is superior to those of neat PS and PS/SiO2 composites.

关 键 词：SIO2纳米粒子 纳米复合粒子 聚苯乙烯 力学性能 

分 类 号：TQ325[化学工程—合成树脂塑料工业]