改性水镁石对聚丙烯/三元乙丙橡胶复合材料性能的影响  

Effect of Different Kinds of Modified Bructies on Properties of PP/EPDM Composite

作　　者：吴发盛[1] 韦平[1] 仲含芳[1] 王晨[1] 江平开[1] 朱晓林 

机构地区：[1]上海交通大学化学化工学院,上海200240 [2]山东淄博新材料有限公司,淄博255400

出　　处：《材料导报（纳米与新材料专辑）》2008年第3期310-312,共3页

基　　金：上海市重点学科建设项目资助(B202)

摘　　要：水镁石粉体的主要成分为氢氧化镁,作为阻燃剂使用具有不含卤素、加工温度高、低成本等一系列优点,具有广阔的应用前景。以聚丙烯(PP)/三元乙丙橡胶(EPDM)为基体树脂,加入不同表面改性水镁石制备无卤阻燃PP/EPDM复合材料,探讨了不同表面改性水镁石对PP/EPDM/MH无卤阻燃复合材料阻燃性能和力学性能的影响。结果表明,改性后的MH-B提高了水镁石粉体在聚合物基体中的分散性,以及与聚合物基体之间的相容性,增强了材料的力学性能和阻燃性能,在添加量达到175phr时,氧指数可达到29.5%,同时拉伸强度达到12.5MPa,断裂伸长率保持在425%。Brucite,with magnesium hydroxide（MH） as the main component, is used as a non halogen flame retardant with great application prospect due to a series of advantages such as low cost,high processing temperature. In this paper, the flame retardancy and mechanical properties of the two different kinds of modified brucites which are incorporated into a blend of polypropylene（PP） and ethylenepropylene-diene mischpolymer（EPDM） are studied. It is showed that the flame retardancy and mechanical properties are improved by incorporation of MH-B due to the best dispersion and compatibility in the composites. When the content of MH-B is 175phr, the value of LOI reaches 29. 5% with the tensile strength and elongation at break being 12.5MPa and 425%.

关 键 词：聚丙烯 三元乙丙橡胶 阻燃 水镁石 表面改性 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业] TQ333.4