成核剂改性聚丙烯的研究  

Study on Polypropylene Modified by Nucleator

作　　者：郭峰[1] 傅勇[1] 徐振明[1] 杨苏平[1] 

机构地区：[1]中国石化扬子石油化工股份有限公司研究院,江苏南京210048

出　　处：《现代塑料加工应用》2006年第4期27-30,共4页Modern Plastics Processing and Applications

摘　　要：研究了增强型成核剂A和β型成核剂B对不同种类的聚丙烯(PP)的成核效果,对PP进行了物理机械性能测试和结晶性能研究。结果表明,增强型成核剂A可以较大幅度地提高PP的弯曲模量,而材料的冲击强度只有在成核剂A适当的添加量下才会增加；β型成核剂B可以较好地改善PP冲击性能；所用2种成核剂都可以提高PP的热变形温度,在添加质量分数不小于0．10%时β型成核剂B的效果要优于增强型成核剂A；2种成核剂都可以使PP的熔体流动速率略有增加,都对PP加工性能的改善有一定的作用。添加β型成核剂B可以使PP的晶型由α型向β型发生转变。The influence of enhancing-nucleator A and β-nucleator B on different kinds of polypropylene （PP） was studied, and the mechnical properties and crystalline properties of PP were tested. The results show that the enhancing-nucleator A increases flexural modulus of PP largely, and the impact strength increases only at appropriate addition of the enhancing nucleator A. The β-nucleator B evidently improves the impact strength of PP. Either of the two nucleators improves the heat distortion temperature, and nu cleation effect of the β-nucleator B is better than that of the enhancing-nucleator A when the content of nucleator is no less than 0.10%. Either of the two nucleators increases MFR of PP slightly, and they all are useful for the improvement of the process performance of PP. After adding β-nucleator B, the crystal form of PP transformed from a phase to β phase.

关 键 词：聚丙烯 成核剂 性能 结晶 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] S513[农业科学—作物学]