POE-g-MAH改性SEBS/OBC共混物的相容性、结构和力学性能研究  

Compatibility, Structure and Mechanical Properties of POE-g-MAH Modified SEBS/OBC Blends

作　　者：白楠 王臣臣 宋立夫 王元霞 史颖 刘立志 宋立新[1,2] BAI Nan;WANG Chen-chen;SONG Li-fu;WANG Yuan-xia;SHI Ying;LIU Li-zhi;SONG Li-xin(Advanced Manufacturing Institute of Polymer Industry,Shenyang University of Chemical Technology,Shenyang 110142,China;College of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学高分子产业高端制造研究院,辽宁沈阳110142 [2]沈阳化工大学材料科学与工程学院,辽宁沈阳110142

出　　处：《塑料科技》2022年第7期38-43,共6页Plastics Science and Technology

摘　　要：采用相容剂马来酸酐接枝乙烯-辛烯无规共聚物(POE-g-MAH)改性氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物/乙烯-辛烯嵌段共聚物(SEBS/OBC)共混物,研究共混物的流动性、结晶行为、微观结构及力学性能。结果表明:POE-g-MAH和OBC的加入改善SEBS流动性。当OBC的含量为40%,SEBS/OBC/POE-g-MAH的熔体流动速率(MFR)为4.43 g/10min。POE-g-MAH提高了SEBS/OBC共混物的结晶温度,改善OBC和SEBS之间的相容性。POE-g-MAH提高了SEBS与OBC之间的界面结合能力,从而提高SEBS/OBC的拉伸强度。当OBC含量为10%时,SEBS的拉伸强度和断裂伸长率提升较少,SEBS的结构对性能影响占主导。当OBC含量进一步增加时,SEBS和OBC的共同作用,明显改善共混物的拉伸强度和断裂伸长率。The styrene-butadiene-styrene block copolymer/ethylene-octene block copolymer(SEBS/OBC) blends were modified by maleic anhydride grafted ethylene-octene random copolymer(POE-g-MAH). The fluidity, crystallization behavior, microstructure and mechanical properties of the blends were studied. The results show that the addition of POE-g-MAH and OBC improves the fluidity of SEBS. When the content of OBC is 40%, the melt flow rate(MFR) of SEBS/OBC/POE-g-MAH is 4.43 g/10min. POE-g-MAH increases the crystallization temperature of SEBS/OBC blends and improves the compatibility between OBC and SEBS. POE-g-MAH improves the interfacial adhesion between SEBS and OBC, thus improving the tensile strength of SEBS/OBC. When the OBC content is 10%, the tensile strength and elongation at break of SEBS increase less, and the structure of SEBS playes a dominant role in the performance. When the content of OBC is further increased, the tensile strength and elongation at break of the blends are obviously improved by the combined action of SEBS and OBC.

关 键 词：POE-G-MAH OBC SEBS 结晶行为 拉伸性能 

分 类 号：TB332[一般工业技术—材料科学与工程]