HPN-68L成核剂对顺丁橡胶增韧PP材料结晶行为和力学性能的影响  

Effect of HPN-68L Nucleating Agent on the Crystallization Behavior and Mechanical Properties of Butadiene Rubber Toughened Polypropylene

作　　者：沈志远[1,2] 杜玉栋 张浩 李小燕 胡燕峰 张奇 罗发亮 SHEN Zhiyuan;DU Yudong;ZHANG Hao;LI Xiaoyan;HU Yanfeng;ZHANG Qi;LUO Faliang(State Key Laboratory of High-efficiency Utillization of Coal and Green Chemical Engineering,Ningxia University,Yinchuan 750021,China;PetroChina Ningxia Petrochemical Company,Yinchuan 750026,China)

机构地区：[1]省部共建煤炭高效利用与绿色化工国家重点实验室宁夏大学,宁夏银川750021 [2]中国石油宁夏石化公司,宁夏银川750026

出　　处：《塑料工业》2023年第4期143-148,共6页China Plastics Industry

基　　金：宁夏重点研发计划东西部合作项目(2019BFH02018);宁夏大学双一流学科建设(化学工程与技术)(批准号NXYLXK2017A04)。

摘　　要：采用物理共混的方法,研究了成核剂HPN-68L对顺丁橡胶(BR)增韧等规聚丙烯(iPP)材料性能的影响。利用广角X射线衍射仪(WXRD)、差示扫描量热仪(DSC)、偏光显微镜(POM)等测试手段探究了HPN-68L对iPP/BR共混物的结晶行为和力学性能的影响。结果表明,HPN-68L在高温下诱导iPP结晶,并且起到了物理凝胶的作用,HPN-68L的添加使BR在降温过程中由于iPP的凝固化而被限阈均匀地分散在基体中,BR在iPP基体中得到固定从而减小团聚带来的材料性能恶化。当HPN-68L质量分数为0.6%(以iPP、BR、HPN-68L总质量为基准,下同),加入30%顺丁橡胶时,材料的最大冲击强度达到17.216 kJ/m^(2),比纯iPP冲击强度高出236.91%,断裂伸长率由69.23%提高至176.32%。The effect of nucleating agent HPN-68L on the properties of butadiene rubber(BR)toughened isotactic polypropylene(iPP)was studied by physical blending method.The effects of HPN-68L on the crystallization behavior and mechanical properties of iPP/BR blends were investigated by wide angle X-ray diffraction(WXRD),differential scanning calorimetry(DSC)and polar light microscopy(POM).The results show that the HPN-68L induces the crystallization of polypropylene at high temperature and acts as a physical gel,which makes the BR uniformly dispersed in the matrix due to the iPP solidification during the cooling process,and the BR is fixed in the iPP matrix,thus reducing the deterioration of the material properties caused by agglomeration.When the mass content of HPN-68L reaches 0.6%(based on the total mass of iPP,BR and HPN-68L,the same below)and with the addition of 30%BR,the maximum impact strength reaches up to 17.216 kJ/m 2,which is 236.91%higher than that of pure iPP.The elongation at break increases from 69.23%to 176.32%.

关 键 词：等规聚丙烯 顺丁橡胶 成核剂 结晶行为 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]