TiO_2对MPP/PEPA阻燃PP性能的影响  

Effect of TiO_2 on Property of Flame-Retardant PP by MPP/PEPA

作　　者：冯才敏[1,2] 卢子健[1] 李沛华[1] 廖志良[1] 何杰全[1] 麦乾枝[1] 

机构地区：[1]顺德职业技术学院医学系,广东佛山528333 [2]华南家电研究院家电有害物质替代研发中心,广东佛山528300

出　　处：《现代塑料加工应用》2009年第1期43-45,共3页Modern Plastics Processing and Applications

摘　　要：采用多聚磷酸蜜胺(MPP)和笼状季戊四醇磷酸酯(PEPA)复配阻燃剂,制备了无卤阻燃聚丙烯(PP)。研究了MPP/PEPA质量比和TiO2添加量对PP阻燃性能的影响。结果表明:MPP/PEPA质量比为3∶2时,复配效果好;添加少量的TiO2可以显著提高PP的阻燃性能。当MPP/PEPA/TiO2添加质量分数分别为12%,8%和1%时,阻燃PP的氧指数高达31.5%。热失重分析结果表明:添加TiO2可以起催化MPP/PEPA酯化,促进成炭的作用。扫描电镜形貌观察表明,TiO2可以起到稳定炭层,增加炭层厚度作用。Halogen-free flame-retardant PP was prepared by using MPP and PEPA as composite flame retardant agent. The effects of mass ratio of MPP to PEPA and TiO2 contents on PP flame retardancy were studied. The results show that MPP and PEPA have excellent synergistic effects on the flame-retardant PP, when the mass ratio of MPP to PEPA is 3 ： 2. A little quantity of TiO2 can improve the flame retardany of PP remarkably. When MPP, PEPA and TiO2 are 12%, 8% and 1% respectively, the LOI of flame-retardant PP is 31.5%. TGA results show that TiO2 can catalyze esterification of MPP/PEPA and increase the char residue of flame-retardant PP. SEM results show that TiO2 can stablize flame-retardnt and thicken the char structure.

关 键 词：聚丙烯 多聚磷酸蜜胺 笼状季戊四醇磷酸酯 氧化钛 无卤阻燃 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]