PC/ABS/聚硼硅氧烷阻燃合金的性能  

Properties of flame retarded PC/ABS/polyborosiloxane

作　　者：周文君[1] 王雪芹[1] 何伟壮 

机构地区：[1]杭州师范大学材料与化学化工学院,浙江杭州310036

出　　处：《化工进展》2016年第3期861-865,共5页Chemical Industry and Engineering Progress

基　　金：浙江省自然科学基金(LY14E030009);浙江省公益技术应用研究项目(2015C31146)

摘　　要：采用X射线能谱分析(EDX)研究了PC/ABS/聚硼硅氧烷阻燃合金的燃烧行为,同时考察了阻燃PC/ABS合金的力学性能和加工性能。结果表明,聚硼硅氧烷(PB)中的Si元素会随着燃烧过程的进行逐渐在合金表面进行富集,形成富含Si的绝缘炭层覆盖在基体表面,阻止合金继续燃烧,从而有效提高了PC/ABS合金的阻燃性能。聚硼硅氧烷使PC/ABS合金体系的力学性能有所下降,但拉伸强度下降较少,PB对PC/ABS合金的冲击强度影响较大。在阻燃PC/ABS合金体系中加入相容剂马来酸酐接枝ABS,可使合金体系的力学性能得到明显提高。适量的PB可以改善PC/ABS合金的加工性能。Surfaces of the PC/ABS/polyborosiloxane before and after combustion were analyzed by the energy dispersive X-ray（EDX）. The mechanical properties and processing properties of the flame retarded PC/ABS alloy were also investigated. It was demonstrated that Si element in the polyborosiloxane（PB） would gradually concentrate on the surface of the alloy during the combustion process to form Si-rich insulating char layer on the surface of substrate. The layer retards the alloy from further combustion,which effectively improve the flame retardancy of the PC/ABS alloy. PB degrades mechanical properties of PC/ABS alloy system：PB has a great influence on the impact strength,but decreases the tensile strength only a little. The addition of compatilizer named maleic anhydride grafted ABS in the PC/ABS/PB can obviously enhance the mechanical properties of PC/ABS alloy system. Appropriate amount of PB can improve processing performance of the PC/ABS alloy.

关 键 词：聚硼硅氧烷 PC/ABS合金 阻燃 力学性能 相容剂 

分 类 号：TQ322.3[化学工程—合成树脂塑料工业]