乙烯醋酸乙烯共聚物对碳黑填充高密度聚乙烯共混体系的增韧作用  

Toughening Effect of Vinyl Acetate Copolymer in Carbon Black Filled High Density Polyethylene System

作　　者：李正辉 方圆[3] 胡鸿雨[1,2] 陈红征 张发饶 李全涛 俞沛杰 LI Zhenghui;FANG Yuan;HU Hongyu;CHEN Hongzheng;ZHANG Farao;LI Quantao;YU Peijie(Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China;Ningbo Mater Chem Technology Co.,Ltd.,Ningbo 315830,China;School of Materials and Chemical Engineering,Ningbo University of Technology,Ningbo 315211,China)

机构地区：[1]浙江大学高分子科学与工程学系,浙江杭州310027 [2]宁波能之光新材料科技股份有限公司,浙江宁波315830 [3]宁波工程学院材料与化学工程学院,浙江宁波315211

出　　处：《材料科学与工程学报》2021年第3期483-486,526,共5页Journal of Materials Science and Engineering

基　　金：宁波市自然科学基金资助项目(2014A610136)。

摘　　要：在碳黑(CB)填充高密度聚乙烯(HDPE)体系中加入乙烯醋酸乙烯共聚物(EVA)以增加体系的相容性,使碳黑与HDPE形成三维网络结构,改善碳黑在HDPE中的分散,提高共混体系的韧性;且通过改变EVA、碳黑、HDPE三者比例,可以达到设计材料力学性能的目的。研究发现由于EVA的加入,使体系的流变行为发生了较大变化,在低频区出现弹性模量“第二平台”,体系弹性模量、损耗模量和粘度都有显著提高,损耗因子减小。Vinyl acetate copolymer(EVA)was added to the carbon black(CB)filled high density polyethylene(HDPE)system to improve the compatibility of the system.It can make CB and HDPE form a three-dimensional network structure,thus improving the dispersion of CB in HDPE,and enhancing the toughness of the blending system.By changing the content of EVA and CB,the purpose of designing the mechanical properties of the blends can be achieved.Furthermore,adding of EVA made the rheological behavior of the system change greatly.The storage modulus "second plateau"appeared in a low frequency region.The storage modulus,loss modulus and complex viscosity of the blends were significantly increased,but the loss factor was reduced.

关 键 词：高密度聚乙烯 EVA 流变性能 

分 类 号：TB332[一般工业技术—材料科学与工程]