纳米二氧化硅含量对微发泡高抗冲聚苯乙烯发泡行为的影响  

Effect of Content of Nano-SiO_2 on Foaming Behavior of Micro-foamed High Impact Polystyrene Composites

作　　者：郭于林[1,2] 柯昌月[1,2] 武毅[1,2] 谢利莎[2,3] 何力[2] 张纯[2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [3]贵州大学化学与化工学院,贵州贵阳550003

出　　处：《塑料科技》2012年第3期47-50,共4页Plastics Science and Technology

基　　金：贵州省工业攻关项目:项目编号黔科合GY字[2010]3005号

摘　　要：将改性的纳米二氧化硅(nano-SiO2)以不同的含量加入到高抗冲聚苯乙烯(HIPS)中,在二次开模条件下制备微发泡HIPS/nano-SiO2复合材料,分析了不同含量的nano-SiO2对微发泡复合材料泡孔结构和发泡行为的影响规律。结果表明:随nano-SiO2含量的增加,泡孔平均直径逐渐减小,泡孔密度逐渐增加;当nano-SiO2含量为3%时,泡孔直径最小为19.15μm,泡孔密度最大达到1.71×107个/cm3,具有理想的发泡效果。The modified nano-SiO2 was added into HIPS with different content. The micro-foamed HIPS/ nano-SiO2 composites were prepared by means of the twice-opening moulding technology. The effect law of different content of nano-SiO2 on the cell structure and foaming behavior of microfoamed composites was analyzed. The results show that with the increase of nano-SiO2 content, the cell diameter decreases, and cell density increases gradually. When the content of nano-SiO2 is 3%, the average cell diameter is 19.15 pm and the cell density is 1.71 ×107cell/cm3, there is an ideal foaming effect in micro-foamed composites.

关 键 词：高抗冲聚苯乙烯 纳米二氧化硅 泡孔结构 发泡行为 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]