阻燃抗静电聚丙烯复合材料研究

摘要

通过在阻燃抗静电聚丙烯中加入聚乙烯作为分散相,控制导电填料分布在分散相中,提高了阻燃抗静电聚丙烯复合材料中导电填料的抗静电效率,并且为复合材料综合性能的改善提供了可能性.在聚合物基体中加入20%(质量分数)的聚乙烯后,当阻燃剂含量为45份、导电炭黑含量为5份时,阻燃抗静电聚丙烯复合材料的表面电阻率为7.41×105Ω,极限氧指数为30%,垂直燃烧性能达到UL-94的V-0级,拉伸强度为27.1 MPa,断裂伸长率为74.9%.%In this paper,the antistatic efficiency of conductive filler in flame-retardant and antistatic polypropyl-ene composites was improved by controlling the distribution of conductive fillers,and the combustibility and tensile properties of the composites were improved as well.When the polyethylene content in polymer matrix was 20wt%,the flame-retarded and antistatic polypropylene composites,with 5 phr carbon black and 45 phr flame retardant,reached a surface resistivity of 7.41×105 Ω,LOI value of 30%,vertical combustion perform-ance of V-0,tensile strength of 27.1 MPa and breaking elongation of 74.9%.