聚丙烯刚性成核剂的应用评价  

Application Evaluation of Rigid Nucleating Agent for Polypropylene

作　　者：李栋[1] 杨文亮[1] 段瑶瑶 Li Dong;Yang Wenliang;Duan Yaoyao(Research Institute of Yangtze Petrochemical Co.,Ltd.,Nanjing,Jiangsu 210048,China)

机构地区：[1]中国石化扬子石油化工有限公司研究院,江苏南京210048

出　　处：《塑料助剂》2025年第1期22-25,共4页Plastics Additives

摘　　要：对合成的5种增刚成核剂,对标进口产品,进行金属元素和熔点测试,并使用相同基料在同等添加量下注塑测试力学性能和热力学性能。测试发现,合成助剂的金属元素含量与对比样相当,但种类增多,注塑后测试结果相当,且部分助剂收缩率优于对比样;对样条分别测试旋转流变和动态三点弯曲力学性能,分析发现对比样的结晶更完善,样片在持续作用力下的稳定性更优。Metal element and melting point tests were conducted on the five synthesized stiffening nucleating agents,which were compared with imported products,and the same base materials were applied to inject and test the mechanical and thermodynamic properties at the same dosage.Tests have found that the metal element content of synthetic additives is equivalent to that of the control sample,but with an increase in the variety,the test results after injection molding are comparable,and some additives have better shrinkage indicators than the control sample.The rotational rheological and dynamic three-point bending mechanical properties of the spline were tested separately.Analysis showed that the crystallization of the comparison sample was more complete,and the stability of the sample under continuous force was better.

关 键 词：聚丙烯 成核剂 旋转流变 动态机械力分析 结晶 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]