核壳粒子POE/HDPE增韧改性聚丙烯  

Toughening of PP by core-shell particles of POE/HDPE

作　　者：高晓洁 方辉 鄢珊丹 许博文 Gao Xiaojie;Fang Hui;Yan Shandan;Xu Bowen(College of Materials Science and Engineering,Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]福建工程学院材料科学与工程学院,福建省福州市350118

出　　处：《合成树脂及塑料》2018年第4期42-45,共4页China Synthetic Resin and Plastics

基　　金：福建省高校产学合作项目(2018H6002)

摘　　要：以聚丙烯(PP)、乙烯-1-辛烯共聚物(POE)、高密度聚乙烯(HDPE)为原料,通过熔融共混制备了具有核壳结构的PP/POE/HDPE合金。通过改变HDPE含量,研究了核壳结构对PP/POE/HDPE合金性能的影响。结果表明:当w(HDPE)大于15%时,PP/POE/HDPE合金中有明显的核壳结构,以HDPE为核,弹性体POE为壳,不仅能形成单核结构,还能形成多核结构;随着HDPE含量增加,PP的结晶度下降;当w(HDPE)为20%时,与纯PP相比,PP/POE/HDPE合金的冲击强度提高了139.5%,而拉伸强度和弹性模量基本不变。Polypropylene(PP),ethylene-1-octylene polyolefin elastomer(POE)and high density polyethylene(HDPE)were used as raw materials to prepare PP/POE/HDPE alloy with core-shell structure via melt blending.The contribution of core-shell structure on the properties of the alloy was observed by changing the content of HDPE.The results show that PP/POE/HDPE alloy has the core-shell structure with single or multi core of HDPE and shell of POE when the mass fraction of HDPE is more than 15%.The crystallinity of PP decreases with the increasing content of HDPE.The impact strength of PP/POE/HDPE alloy is increased by 139.5%compared with that of pure PP,while the tensile strength and elastic modulus vary little when the mass fraction of HDPE reaches 20%.

关 键 词：聚丙烯 乙烯-1-辛烯共聚物 聚乙烯 共混改性 核壳结构 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]