摘要
目前工业化生产的聚丙烯(PP)通常存在热性能、电性能、光学性能等较差的缺点,特别是在低温或高应变速率等极端条件下,通常可以通过添加成核剂改善这些问题。PP成核剂可以诱导PP异相成核,使PP的结晶构造进一步细微化,即提高结晶度、降低球晶的直径,进而改进PP的各项性能。从PP成核剂的种类开始叙述,介绍了不同种类的α晶型成核剂(无机类、有机类)和β晶型成核剂(无机类、稠环芳烃类、稀土化合物等)及各自的特点,在此基础上综述了近年来的PP成核剂,并总结了它们对于PP各项性能的改性效果。最后结合PP成核剂的实际应用对PP成核剂的研究方向进行了展望。
Polypropylene(PP)produced through current industrial processes has typical drawbacks such as poor thermal properties,electrical properties,and optical properties,especially under extreme conditions like low temperatures or high strain rates.These issues can often be addressed by adding nucleating agents.Nucleating agents can induce heterogeneous nucleation in PP,leading to a further refinement of the crystalline structure.In this case,there is an increase in the crystallinity of PP and a reduction in the diameter of spherulites,thus improving the various properties of PP.Starting from the types of nucleating agents for PP,this paper introduced different categories of alpha⁃crystalline nucleating agents(inorganic and organic types)and beta⁃crystalline nucleating agents(inorganic,polycyclic aromatic hydrocarbons,rare earth compounds,etc.)as well as their respective characteristics.Based on this foundation,the paper also reviewed the recent development in the nucleating agents for PP and summarized their nucleating effects on the performance modification of PP.Finally,an outlook was provided for the research direction of nucleating agents of PP in combination with their practical applications.
作者
徐琛
骆博飞
刘腾腾
邢晶凯
XU Chen;LUO Bofei;LIU Tengteng;XING Jingkai(School of Science,Xi'an University of Technology,Xi'an 710054,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2024年第7期79-85,共7页
China Plastics
关键词
聚丙烯
成核剂
聚合物
力学性能
热力学
polypropylene
nucleating agent
polymer
mechanical property
thermodynamics
