PP/EPDM/MOS无卤阻燃体系阻燃性能的研究  

Studies on flame-retardant properties of PP/EPDM/ basic magnesium sulfate whisker blends

作　　者：严满清[1] 刘春华[2] 王海燕[1] 唐龙祥[2] 王平华[2] 

机构地区：[1]安徽大学化工学院,安徽合肥230039 [2]合肥工业大学化学工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2007年第1期91-94,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：结合碱式硫酸镁晶须(MOS)的阻燃功能,以微胶囊红磷(MRP)为协效剂,制备了无卤阻燃型PP/EP-DM/MOS/MRP共混物,并与PP/EPDM/Mg(OH)2/MRP共混物进行比较;对氧指数(LOI)、垂直燃烧(UL-94)、热重分析(TGA)及锥形量热器(CCT)测试表明:MOS的阻燃效果优于MH,主要是由于在燃烧过程中形成了稳定致密的碳层,对基材起到了保护作用;提出PP/EPDM热塑性弹性体的动态硫化可进一步提高PP/EPDM/MOS/MRP阻燃体系的阻燃性能。In light of the flame-retardant function of the basic magnesium sulfate whisker（MOS）, the PP/EPDM/MOS/MRP composites are prepared and compared with PP/EPDM/Mg（OH）2/MRP composites. The limiting oxygen index（LOI） test, the vertical combustion（UL-94） test and the cone calorimeter test（CCT） are made and thermo-gravimetric analysis（TGA） is carried out, and the results show that the flame-retardant efficiency of the MOS is higher than that of the MH, which is mainly due to the physical barrier effect of the charred layers formed in PP/EPDM/MOS/MRP composites at high temperature. Moreover, dynamic vulcanization of the PP/EPDM thermoplastic elastomer can further improve the flame-retardant properties of PP/EPDM/MOS/MRP composites.

关 键 词：聚丙烯 热塑性弹性体 碱式硫酸镁晶须 动态硫化 无卤阻燃 

分 类 号：TQ334.9[化学工程—橡胶工业]