超高分子量聚乙烯/聚烯烃弹性体共混材料结构与性能  

Structure and Properties of Ultra High MolecularWeight Polyethylene/Polyolefin Elastomer Blends

作　　者：王利霞[1,2] 周宝凯 史淼磊 周露 毕肇杰 王晨[1,2] 王东方[1,2] 李倩[1,2] Lixia Wang;Baokai Zhou;Miaolei Shi;Lu Zhou;Zhaojie Bi;ChenWang;Dongfang Wang;Qian Li(School of Mechanics and Safety Engineering,Zhengzhou University;National International Joint Research Center for Micro-Nano Moulding Technology,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学力学与安全工程学院 [2]郑州大学微纳成型技术国家级国际联合研究中心,河南郑州450001

出　　处：《高分子材料科学与工程》2022年第4期73-79,共7页Polymer Materials Science & Engineering

基　　金：河南省科技攻关项目(国际科技合作)(172102410061);国家自然科学基金资助项目(11372287)。

摘　　要：利用干粉共混法制备了超高分子量聚乙烯(UHMWPE)/聚烯烃弹性体(POE)共混材料,研究了POE含量对UHMWPE/POE共混材料微观结构、流变性能、结晶性能及力学性能的影响。结果表明,POE在UHMWPE基体中分散较均匀,能与UHMWPE基体保持部分结合,且POE的加入对UHMWPE的结晶性能有促进作用。随POE含量增加,冲击强度和拉伸强度有所下降,断裂形式逐渐由韧性转为脆性;POE的加入能够较大地改善UHMWPE的挤出性能,当POE质量分数为5%时,所制备的UHMWPE/POE共混材料既能保持一定力学韧性,又能有较好的熔体流动性能。Ultra high molecular weight polyethylene(UHMWPE)/polyolefin elastomer(POE)blends were prepared by dry powder blending method.The effects of POE content on melt fluidity,rheological properties,crystallization properties and mechanical properties of UHMWPE/POE blends were studied.The results show that POE was evenly dispersed in UHMWPE matrix and can maintain partial bonding with UHMWPE matrix,and the addition of POE can promote the crystallization properties of UHMWPE.With the increase of POE content,the impact strength and tensile strength decrease,and the fracture form gradually changes from toughness to brittleness;the addition of POE can greatly improve the extrusion properties of UHMWPE.When the POE mass fraction is 5%,the prepared UHMWPE/POE blend can not only maintain a certain mechanical toughness,but also have good melt flow properties.

关 键 词：超高分子量聚乙烯/聚烯烃弹性体混材料 微观结构 流变性能 结晶性能 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]