膨胀阻燃LLDPE/EVA复合材料的制备及其改性  

Preparation and Modifecation of LLDPE/EVA Composites with Intumescent Flame-Retardant

作　　者：王立春 Wang Lichun(Nantong Polymax Elastomer Technology Co. , Ltd. ,Nantong,Jiangsu, 226011)

机构地区：[1]南通普力马弹性体技术有限公司,江苏南通226011

出　　处：《现代塑料加工应用》2016年第4期15-18,共4页Modern Plastics Processing and Applications

摘　　要：将预先配制好的膨胀阻燃剂[IFR,聚磷酸铵(APP)/季戊四醇(PER)/硼酸锌(ZB)]与线性低密度聚乙烯(LLDPE)/乙烯-醋酸乙烯共聚物(EVA)进行混和,采用双螺杆挤出机,制备阻燃LLDPE/EVA复合材料。用氧化钙(CaO)、天然石墨(NG)、膨胀石墨(EG)对阻燃LLDPE/EVA复合材料进行改性。结果表明:APP/PER/ZB具有明显的膨胀阻燃作用,同时,发现CaO,NG,EG与IFR有协同作用,提高了膨胀炭层的热稳定性和阻燃效率。The prepared intumescent flame retardants （IFR, APP/PER/ZB）, and LLDPE/ EVA were blended , and the FR-LLDPE/EVA composites were prepared by twoscrew injection machines. Meanwhile, CaO or NG or EG was used to modifiy the FR-LL- DPE/EVA composites. The results show that APP/PER/ZB has obvious retardant effect. And there is synergistic effect between CaO or NG or EG and IFR, which can improve the heat stbility of intumescent char and flame-retardant efficiency.

关 键 词：膨胀阻燃 线性低密度聚乙烯 乙烯-醋酸乙烯共聚物 协同作用 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]