α和β成核剂改性聚丙烯的研究  

Study on Polypropylene Modified by α & β Nucleating Agent

作　　者：王浩江[1] 魏玉坤[1] 庞纯[1] 叶华[1] 王春江[2] 杨育农[2] 赵建青[1] 陈鸣才[3] 徐迎宾 

机构地区：[1]华南理工大学材料学院,广东广州510640 [2]广州合成材料研究院,广东广州510665 [3]中科院广州化学所,广东广州510700 [4]广州市花都科苑企业有限公司,广东广州510641

出　　处：《合成材料老化与应用》2004年第3期13-16,共4页Synthetic Materials Aging and Application

摘　　要：研究了α和β成核剂对聚丙烯(PP)的热变形温度及其力学性能的影响,并用DSC和广角X射线衍射仪对其进行了表征。结果表明,β成核剂较α成核剂更有利于提高PP的热变形温度。此外,α成核剂使PP的刚性增强,表现在其弯曲强度、弯曲模量和硬度等的提高;β成核剂在PP的增韧方面有突出的效果,使PP的缺口冲击强度和断裂伸长率等显著提高。The influence of α and β nucleating agents on the heated-distortion temperature (HDT) and the mechanical properties of polypropylene (PP) was studied. PP modified by α and β nucleating agents was characterized by DSC and X-ray diffraction spectrum. The results showed that β-nucleating agent is better than α-nucleating agent in improving the HDT of PP. Besides, α-nucleating agent resulted in higher rigidity while β-nucleating agent did an increase of toughness of PP. The flexural strength, flexural modulus and hardness of PP were improved by adding α-nucleating agent, while the notch impact strength and elongation at break of PP were improved by adding β-nucleating agent.

关 键 词：Β成核剂 PP 热变形温度 缺口冲击强度 并用 增韧 弯曲模量 聚丙烯 刚性 影响 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ323