原位聚合PS/纳米MoS_2复合材料的制备及其性能  

IN-SITU PREPARATION AND PERFORMANCE OF POLYSTYRENE/MOS_2 COMPOSITES

作　　者：郭胜平[1] 吴伟端[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建泉州362011

出　　处：《玻璃钢／复合材料》2006年第2期34-36,共3页Fiber Reinforced Plastics/Composites

摘　　要：用过氧化二苯甲酰做引发剂,聚乙烯醇做分散剂,以苯乙烯为单体,采用原位聚合的方法制备聚苯乙烯(PS)/纳米二硫化钼(MoS2)复合材料。应用示差扫描量热法(DSC)分析了不同MoS2含量时复合材料的热稳定性和玻璃化温度Tg;用高阻计测试了不同MoS2含量时复合材料的电性能。结果表明,加入MoS2,PS的Tg提高;且随着MoS2含量的增加,PS基体的热稳定性和玻璃化温度趋于稳定;复合材料的体积电阻率随着MoS2含量的增大而急剧降低,MoS2的含量增大到20%左右时,复合材料的体积电阻率达到108Ω.cm,已符合抗静电的要求。Polystyrene/nano-molybdenum disulfide composites were prepared by in-situ polymerization, using dibenzoyl peroxide （BPO） as initiator, polyvinyl alcohol （PVA） as dispersant and styrene as monomer. Thermalstability and melting point of the composites were characterized by differential scanning calorimetry （ DSC ）. Thecomposites showed enhanced thermal stability and glass transition temperature, however, which were changed littleas the content of MoS2 increasing. The volume resistivity of composites were characterized by high ohmmeter, andthe results showed sharply reduced volume resistivity, but it was changed little after the content of molybdenum di-sulfide was enhanced to 20 percent. The maximal volume resistivity is 10^8Ω·cm.

关 键 词：聚苯乙烯 纳米二硫化钼 原位聚合 复合材料 热性能 体积电阻率 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ325.2[化学工程—合成树脂塑料工业]