中国塑料2017，Vol.31Issue(4)：81-84,4.DOI:10.19491/j.issn.1001-9278.2017.04.015
硫酸钙晶须/TMB-5复合成核剂改性聚丙烯的结晶和熔融行为研究
Effect of Crystallization and Melting Behaviors of Polypropylene Modified with CaSO4 Whiskers/TMB-5 Combined Nucleating Agent
摘要
Abstract
A surface modification of calcium sulfate whiskers was performed by using a KH-550 silane coupling agent,and their structures before and after the surface modification were investigated comparatively by Fourier-transform infrared spectroscopy.The crystallization and melting behaviors of polypropylene (PP) nucleated with β-nucleating agent (TMP-5),surfacemodified CaSO4 whiskers(K-CSW),and a mixture of CaSO4 whiskers and TMB-5 were studied by differential scanning calorimetry,and the nucleating effects of these three nucleating agents were compared.The results indicated that the K-CSW could effectively promote the formation of β-crystals and it also exhibited a synergistic nucleating effect with TMB-5,thus resulting in an improvement in crystallinity of PP.When 0.2 wt ％ of TMB-5 and 2 wt ％ of K-CSW were incorporated into PP,the relative content of β-crystals in PP reached 90.1％,and the peak crystallization temperature of nucleated PP increased to 127.2 ℃ from 122.3 ℃ of pure PP.关键词
β成核剂/硫酸钙晶须/聚丙烯/协同成核作用Key words
β-nucleating agent/calcium sulfate whisker/polypropylene/synergistic nucleating effect分类
化学化工引用本文复制引用
何彬,张跃飞,周培章,任晓琼,何娟..硫酸钙晶须/TMB-5复合成核剂改性聚丙烯的结晶和熔融行为研究[J].中国塑料,2017,31(4):81-84,4.基金项目
国家自然科学基金项目(21376031) （21376031）
湖南省教育厅资助科研项目(16A004) （16A004）
湖南省研究生科研创新项目资助(CX2016B416) （CX2016B416）
