β成核剂TMB-5对iPP注塑件结晶结构和性能影响的研究  

Effect of β-nucleating Agent TMB-5 on the Structure and Properties of iPP Crystal Plastic Parts

作　　者：雷洋[1,2] 张晓黎[1] 逯晓勤[1] 刘丽萍[1] 陈静波[1,2] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450001 [2]橡塑模具国家工程研究中心,河南郑州450002

出　　处：《塑料工业》2014年第12期68-72,共5页China Plastics Industry

基　　金：国家自然科学基金资金(11172272;11372284);郑州市科技局项目(121PPTGG360-2);河南省科技厅项目(122300410278)

摘　　要：TMB-5是一种有机酰胺类β成核剂。通过偏光显微镜、差示扫描量热仪、广角X射线衍射仪和万能拉伸机等手段研究了不同含量TMB-5对等规聚丙烯(i PP)注塑制件沿厚度方向的结晶形态结构及制品的力学性能的影响。结果表明,TMB-5质量分数为0.1%时,冲击强度提高幅度较大,进一步提高成核剂含量,冲击强度逐渐降低;与之相对应的是,拉伸强度呈现先降低后增加的趋势。β成核剂对i PP的晶体形态和结构影响较大,且注塑制件自皮层到芯层的晶体结构存在一定差异。TMB-5 was an organic aromatic amide β-nucleating agent.Effects of TMB-5 at different contents on the crystallization morphology and structure of injection molded iPP （isotactic polypropylene） specimen,as well as the mechanical properties were conducted by polarizing microscope,differential scanning calorimetry,wide angle X-ray diffraction and universal tensile machine.The results showed when TMB-5 content was at 0.1%,the impact strength was enhanced relatively,and then decreased gradually.The tensile strength was decreased and then increased.β-nucleating agent changed iPP crystal morphology and structure obviously,and it also influenced the iPP crystal structure from skin to core layer.

关 键 词：Β成核剂 聚丙烯 注塑成型 晶体形态 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]