中国塑料2018，Vol.32Issue(1)：39-43,5.DOI:10.19491/j.issn.1001-9278.2018.01.007
不同方法制备的庚二酸钙对改性聚丙烯结晶和熔融行为的影响
Effect of Calcium Pimelate Preparted by Different Methods on Crystallization and Melting Behaviors of Polypropylene
摘要
Abstract
Three types of calcium pimelate,D-CaPi,N-CaPi and S-CaPi,were prepared by a metadecomposition reaction,a neutralization reaction and physical compounding of pimelic acid with calcium stearate,respectively,and the effect of different types of calcium pimelate on crystallization and melting behaviors of polypropylene (PP) were investigated.The chemical structure of calcium pimelate was confirmed by Fourier-transform infrared spectroscopy,and the crystallization and melting characteristics of PP/calcium pimelate compounds were determined by differential scanning calorimetry.The results indicated that these three types of calcium pimelate exhibited a nucleation capability for the crystallization of PP,which leads to an increase in crystallization temperature by 4.9 ℃ for PP/D-CaPi and PP/N-CaPi compounds and 6.5 ℃ for PP/ S-CaPi compound.Moreover,S-CaPi was found much easier to induce β-form crystals for PP than D-CaPi and N-CaPi,and it could result in the formation of 84.5 ％ β-crystals for PP.关键词
聚丙烯/成核剂/庚二酸钙/制备方法/结晶行为/熔融行为Key words
polypropylene/nucleating agent/calcium pimelate/preparation method/crystallization behavior/melting behavior分类
化学化工引用本文复制引用
林祥凤,刘抱,张跃飞..不同方法制备的庚二酸钙对改性聚丙烯结晶和熔融行为的影响[J].中国塑料,2018,32(1):39-43,5.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）
