耐刮擦、高流动PP/SEBS热塑性弹性体的研制  

Research on PP/SEBS Elastomer with Scratch Resistant and High Flow

作　　者：阳范文[1] 尹朝辉 徐蒙蒙[1] 欧阳效州 陈美曦 冼彩虹 张雅欣 李健婷 谭泳琳 陈晓明[1] 王晗[3] 陈新度[3] Yang Fanwen;Yin Zhaohui;Xu Mengmeng;Ouyang Xiaozhou;Chen Meixi;Xian Caihong;Zhang Yaxin;Li Jianting;Tan Yonglin;Chen Xiaoming;Wang Han;Chen Xindu(Biomedical Engineering Department, Guangzhou Medical University, Guangzhou 511436, China;Jiangxi Zhonghui New Material Co. Ltd.,Xinyu 338019, China;Mechanical and Electrical College of Guangdong University of Technology, Guangzhou 510006, China)

机构地区：[1]广州医科大学生物医学工程系,广州511436 [2]江西中辉新材料有限公司,江西新余338019 [3]广东工业大学机电学院,广州510006

出　　处：《工程塑料应用》2017年第11期19-23,共5页Engineering Plastics Application

基　　金：广州市高校创新创业教育平台建设重点项目(201709P05);广东省攀登计划项目(pdjh2017a0410);2017年度广医–江西中辉新材联合研究项目;2017年度广州医科大学基础学院协同育人项目

摘　　要：采用熔融共混法制备了聚丙烯(PP)/氢化苯乙烯–丁二烯–苯乙烯嵌段共聚物(SEBS)热塑性弹性体,研究了乙烯丙烯酸酯共聚物润滑偶联改性剂(YY–503和YY–5031)、芥酸酰胺和高分子量硅酮(E525)4种改性剂对PP/SEBS弹性体的加工性能、力学性能和耐刮擦性能的影响。结果表明,4种改性剂的加入能显著提高弹性体的熔体流动速率(MFR),添加YY–503和E525的弹性体MFR提升更为显著,分别为12.6 g/10 min和13.5 g/10 min,比未添加时提高了2 471.4%和2 655.1%;添加芥酸酰胺的弹性体拉伸强度和断裂伸长率最低,比未添加改性剂时分别下降了58.5%和63.2%,添加YY–503和YY–5031的弹性体拉伸强度分别为10.6 MPa和9.8 MPa,比未添加改性剂时分别提高23.2%和19.5%;未添加改性剂弹性体的色差值(ΔL)为18.5,而添加YY–503和YY–5031的弹性体ΔL仅为1.3和1.5;扫描电子显微镜测试发现,添加YY–503和YY–5031的弹性体中没有出现明显孔洞,碳酸钙良好分散,与基体结合力良好。添加质量分数为2%的YY–503可获得力学性能、加工性能和耐刮擦性能优异的PP/SEBS弹性体。PP/SEBS elastomers were prepared by melt blending,the effects of four modifiers such as ethylene acrylate copolymer lubricating coupling modifier(YY-503and YY-5031),erucic acid amide and high molecular weight silicone(E525)on the processability,mechanical properties and scratch resistance of PP/SEBS elastomers were studied.The results show that the addition of the four modifiers can increase the melt flow index(MFR)of the elastomers obviously.The MFR of elastomer with YY-503and E525are increases more obviously,which is12.6g/10min and13.5g/10min respectively,increased by2471.4%and2655.1%higher than that of the elastomer without modifier.The tensile strength and elongation at break of elastomer with erucicacid amide are lowest,which decreases respectively by58.5%and63.2%lower than those of the elastomer without modifier.The tensile strength of the elastomer with YY-503and YY-5031is10.6MPa and9.8MPa respectively,which increases23.2%and19.5%higher than that without modifier respectively.The color difference value of the elastomer without any additive is18.5,while they are only1.3and1.5with YY-503and YY-5031.The SEM results show that there were no obvious hole for elastomers with YY-503and YY-5031respectively,which shows that calcium carbonate is well dispersed and the interface binding is good.The elastomer with2%YY-503has good mechanical properties,high processability and excellent scratch resistance.

关 键 词：聚丙烯 氢化苯乙烯–丁二烯–苯乙烯嵌段共聚物 高流动 耐刮擦 弹性体 

分 类 号：TB324[一般工业技术—材料科学与工程] TQ334[化学工程—橡胶工业]