低分子量马来酸酐化聚丁二烯橡胶改性聚丙烯增韧尼龙6的性能  

Property of Maleated Low Molecular Weight Polybutadiene Functionalized PP Toughening PA6

作　　者：谭天义[1] 施德安[1] 

机构地区：[1]功能材料绿色制备与应用教育部重点实验室湖北大学材料科学与工程学院,武汉430062

出　　处：《胶体与聚合物》2013年第1期29-32,共4页Chinese Journal of Colloid & Polymer

摘　　要：采用模量和强度更高的PP代替LDPE为核,在PP上接枝不同含量的PB-g-MAH(MLPB),在反应挤出过程中与PA6中形成了新型的核/壳(PP/PB-g-MAH)橡胶增韧体系。结果表明:硬核/软壳的增韧体系(PP/PA6)是一种十分有效的方式,能使共混物获得更好的缺口冲击强度、拉伸屈服强度和弹性模量之间的平衡。当PB-g-MAH含量为5%时,增韧体系缺口冲击强度可达480 J/m,而模量和屈服强度分别为2.13 GPa和54 MPa,相对纯尼龙6只有15%和13%的模量和屈服强度损失。LDPE/PB-g-MAH core/sheU rubbers toughening PA6 blends exhibit excellent impact properties with some loss of elastic modulus and yield strength, In this study, the LDPE core is replaced with a PP core, which has both higher elastic modulus and yield strength and which can be grafted with varying amounts of PB-g-MAH, forming new core/shell （PP/PB-g-MAH） rubbers. Results showed that increasing the elastic modulus and yield strength of the core material in the rigid core/soft shell rubber is an effective way to obtain PP/PA6 blends with a good balance of elastic modulus, tensile yield strength and impact strength. When the core/shell rubber containing 5 wt% PB-g-MAH is blended with PA6, the Izod impact strengths can reach 480 J/m, and the modulus and yield strength are 2.13 GPa and 54 MPa, respectively, which represent 15% loss of modulus and 13% in yield strength relative to neat PA6.

关 键 词：核壳增韧剂 PP 尼龙6 马来酸酐化聚丁二烯 

分 类 号：TQ325[化学工程—合成树脂塑料工业]