PP无卤阻燃复合材料性能研究  

Study on Properties of Non-halogen Flame Retardant PP Composites

作　　者：刘长胜[1] 夏英[1] 赵苗永 马文文[1] 郭康生 

机构地区：[1]大连工业大学化工与材料学院,辽宁大连116034 [2]大连联合高分子材料有限公司,辽宁大连116100

出　　处：《塑料科技》2010年第5期67-72,共6页Plastics Science and Technology

摘　　要：采用双辊塑炼机制备了不同组分的聚丙烯(PP)无卤阻燃复合材料。利用差示扫描量热仪(DSC)、偏光显微镜(POM)和扫描电子显微镜(SEM)研究了Mg(OH)2、乙烯-辛烯共聚物(POE)、相容剂PP-g-MAH对PP无卤阻燃复合材料的热行为、结晶形态和微观结构的影响。结果表明:Mg(OH)2和POE两种成核剂的异相成核作用提高了共混物中PP的结晶温度和结晶速率;Mg(OH)2的加入使球晶颗粒变得细小且有碎晶产生;POE大分子链使PP分子链的扩散和堆积受阻,阻碍了晶粒的生长,从而导致PP/Mg(OH)2/POE复合材料结晶度的降低。PP-g-MAH的加入可以提高PP与Mg(OH)2的界面相容性,当PP/Mg(OH)2/POE/PP-g-MAH的配比为80/100/20/2时,PP无卤阻燃复合材料可以同时拥有良好的力学性能和阻燃性能。PP flame retardant composites were prepared with polypropylene（PP） and different components by a twin-screw extruder under melting state.The effects of Mg（OH）2,POE and PP-g-MAH on the thermal behaviors,crystalline structure and micro structure of non-halogen flame retardant PP composites were characterized by differential scanning calormetry（DSC）,polarized optical microscopy（POM） and scanning electron microscopy（SEM）.The results showed that the crystal temperature and nucleation rate of PP were improved by adding Mg（OH）2 and POE acted as nucleation agent.The spherulites of the crystal became small and smashed with Mg（OH）2 in PP,the spread and accumulation of PP molecular chain were hindered by the POE macromolecular chains,and the growth of the spherulites of the crystal was also hindered;then the crystalline degree of PP/Mg（OH）2/POE was decreased.The interfacial compatibility between PP and Mg（OH）2 by adding PP-g-MAH.When the ratio of PP/Mg（OH）2/POE/ PP-g-MAH was 80/100/20/2,the mechanical properties and flame retardant performance of PP/Mg（OH）2/POE/PP-g-MAH nonhalogen flame retardant composites were good.

关 键 词：聚丙烯 乙烯-辛烯共聚物 相容剂 结晶结构 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]