膨胀型阻燃剂和有机蒙脱土协同阻燃聚丙烯的研究  

Study on Synergistic Retarding Effect of Intumescent Flame Retardant and Organic Montmorillonite on Polypropylene

作　　者：李莹[1] 王向东[1] 

机构地区：[1]北京工商大学材料科学与工程系,轻工业塑料加工应用研究所,北京100048

出　　处：《中国塑料》2010年第7期87-91,共5页China Plastics

基　　金：科技部科研院所技术开发研究专项资金资助项目(2008EG111015);北京市教育委员会科技发展计划面上项目(KM200810011009)

摘　　要：采用熔融插层法制备了聚丙烯/膨胀型阻燃剂/有机蒙脱土(PP/IFR/OMMT)阻燃复合材料。探讨了OM-MT对PP膨胀阻燃体系的影响,通过X射线衍射(XRD)、极限氧指数、热重分析(TG)、力学性能测试对阻燃复合材料的阻燃性、热稳定性及力学性能进行了研究。结果表明,PP高分子链插层进入OMMT层间,形成了插层型复合材料。OMMT与IFR具有明显的协同阻燃性。OMMT添加量为2份时,复合材料的极限氧指数达到31%,较单独添加IFR时高出30%;与纯PP相比,复合材料残炭率明显提高。随着OMMT含量的增加,复合材料的拉伸强度、弯曲强度和冲击强度均呈现先上升后下降的趋势,当OMMT含量为3份、IFR含量为22份时,复合材料的拉伸强度、弯曲强度和冲击强度达到最大值。Polypropylene/intumescent flame retardant/organic montmorillonite （PP/IFR/OMMT） composites were prepared by direct melting intercalation. The synergistic flame retarding effect of OMMT and IFR was i.nvestigated. The composite was characterized by X-ray diffraction, limiting oxygen index, thermal analysis, etc. It was found that the layers of OMMT were intercalated by PP chain. There was a clear synergistic retarding effect between OMMT and IFR. When 2 phr of OMMT was introduced, the limiting oxygen index was 30%, and the carbon residue increased obviously. With increasing contents of OMMT, the tensile strength, bending strength and impact strength of composites increased,and then decreased. When 3 phr of OMMT was introduced, the tensile strength, bending strength and impact strength of composites reached the maximum value.

关 键 词：聚丙烯 有机蒙脱土 膨胀型阻燃剂 协同阻燃 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]