EPDM-g-MAZn离聚物对TPO/Mg(OH)_2复合体系结构与性能的影响  

Effect of EPDM-g-MAZn Ionomer on Structure and Performance of TPO/Mg(OH)_2 Composite System

作　　者：王林[1] 冯钠[1] 张桂霞[1] 闫玉龙[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《塑料工业》2012年第1期95-98,共4页China Plastics Industry

基　　金：企业合作项目

摘　　要：以三元乙丙橡胶接枝马来酸锌离聚物(EPDM-g-MAZn)为界面改性剂,制备了热塑性聚烯烃弹性体/氢氧化镁[TPO/Mg(OH)2]复合体系。通过扫描电镜(SEM)、拉伸断裂强度、断裂伸长率、氧指数(LOI)、垂直燃烧、热失重(TG)分别研究了不同用量EPDM-g-MAZn对TPO/Mg(OH)2复合体系结构与性能的影响。SEM分析表明:加入EPDM-g-MAZn离聚物的复合体系分散更均匀,提高了复合体系的界面相容性。力学性能研究表明:当离聚物用量为9份[以Mg(OH)2质量为100份计算,下同],断裂伸长率可以达到226%,拉伸断裂强度可以达到2.5 MPa;阻燃性能及TG结果表明:氧指数可以达到26.8%,垂直燃烧级别可以达到V-0级,无烟且无熔滴,炭层最致密,此时的阻燃性能最佳。TPO/Mg（OH） 2composite was prepared by the ionomer EPDM-g-MAZn as the interface modifier. The influence of different amount of EPDM-g-MAZn on the structure and properties were studied by SEM, tensile strength, elongation at break, LOI, the vertical combustion and TG methods. SEM analysis showed that： adding EPDM-g-MAZn ionomer, the composite system was more evenly distributed, and im- proved the interface compatibility of the composite system. The results showed that when the amount of EP- DM-g-MAZn was 9 phr with Mg（OH） 2 as a standard of quality 100 calculation, the elongation at break was up to 226% , tensile strength could reach 2.5 Mpa; flame retardance and TG showed oxygen index was 26. 8%, FR level could reached the V-0. At this point the layer of carbon was the densest with no smoke and no droplet, the flame retardant could be the best performance.

关 键 词：三元乙丙橡胶接枝马来酸锌 热塑性聚烯烃弹性体 氢氧化镁 复合体系 

分 类 号：TB332[一般工业技术—材料科学与工程]