不同相容剂对聚丙烯/甘蔗渣复合材料力学性能的影响  

Effects of Compatibilizers on Mechanical Properties of Polypropylene/Bagasse Composite

作　　者：李晓媛[1] 温变英[1] 闫建淼[1] 

机构地区：[1]北京工商大学材料与机械工程学院,北京100048

出　　处：《高分子材料科学与工程》2012年第12期51-54,共4页Polymer Materials Science & Engineering

基　　金：北京市自然科学基金项目暨北京市教育委员会科技计划重点项目(KZ201110011014);北京市教委科技创新平台项目(PXM2012-014213-000025)

摘　　要：利用熔融接枝法制备了5种大分子相容剂,用于聚丙烯/甘蔗渣(PP/BF)复合材料,以改善甘蔗渣纤维与聚合物基体间的界面粘接。考察了相容剂种类与含量对PP/BF复合材料力学性能的影响。结果表明,相容剂在改善PP/BF复合材料的界面相容性上起到重要作用,在5种大分子相容剂中,PP-g-MAH对体系有较好的增强作用,而乙烯-辛烯无规共聚物接枝马来酸酐(POE-g-MAH)对体系的增韧效应显著。两种相容剂在其用量为10%时分别达到最佳改性效果,与未添加相容剂的复合材料相比,前者使PP/PP-g-MAH/BF复合材料的拉伸强度提高了16.6%,后者使PP/POE-g-MAH/BF复合材料的缺口冲击强度增加了640%。Five kinds of macromolecular compatibilizer were prepared via melt grafting method. They were used in polypropylene/boagasse （PP/BF） composite in order to improve the interracial adhesion between bagasse fibers and PP matrix. The effects of compatibilizer type and content on mechanical properties of PP/BF composites were investigated. The results indicate that compatibilizer plays an important role in improving the interracial compatibility of PP/BF composites. Among these five compatibilizers, maleated polypropylene （PP-g-MAH） has the best effect on the enhancemnet of the tensile strength, while maleic anhydride grafted ethylene-l-octene copolymer （POE-g-MAH） has the significant toughening effect on the PP/BF composites. The composites show the best propertiest when the content of compatibilizers is 10%. Compared with that of the PP/BF composites without compatibilizer, the tensile strength of PP/PP-g-MAH/BF system increases by 16.6 %, the impact strength of PP/POE-g-MAH/BF composites increases by 640 %.

关 键 词：甘蔗渣 聚丙烯 相容剂 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]