无卤阻燃增韧尼龙1313/POE/MCA复合材料的研究

Research on the Halogen-Free Flame Retardant and Toughening Nylon 1313/POE/MCA Composite

以马来酸酐功能化的乙烯/辛烯共聚物(POE-g-MA)为弹性体,三聚氰胺氰尿酸盐(MCA)为阻燃剂,在SHJ-36双螺杆挤出机中制备了无卤阻燃增韧尼龙1313/POE/MCA复合材料.测定了无卤阻燃尼龙1313/POE/MCA复合材料的极限氧指数(LO I),用扫描电镜(SEM)观察了经锥形量热仪燃烧的该复合材料残炭的形貌.实验结果表明,当POE-g-MA,MCA的质量分数分别为15%和12%时,复合材料的LO I为32%,垂直燃烧通过UL94V-0级,缺口冲击强度是纯尼龙1313的5.5倍,实现了在不使用卤元素阻燃剂并且保证尼龙1313/POE/MCA复合材料力学性能的前提下,大幅度提高该材料阻燃性能的要求.

The Halogen-free flame retardant and toughening nylon 1313 composite was prepared using POE as elastomer and MCA as flame retardant in a SHJ-36 twin screw extruder.LOI was measured as flame retardant property and impact strength was measured as toughness property for the system.The morphology of residual char of composites burned by cone calorimeter was observed by means of SEM.The results showed that LOI and UL94V of nylon 1313 with 15% POE-g-MA and 12% flame retardant were 32% and V-0 respectively.The impact strength of nylon 1313/ POE/MCA composite is 5.5 times larger than that of nylon 1313.And the objective of improving the material flame retardant requirements was achieved without the use of halogen flame retardants and ensure that elements of mechanical properties of nylon 1313/ POE/MCA composite.