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纳米碳酸钙改性聚丙烯
引用本文:张立红,许湧深,孙颜文,赵红竹.纳米碳酸钙改性聚丙烯[J].合成树脂及塑料,2005,22(6):28-30.
作者姓名:张立红  许湧深  孙颜文  赵红竹
作者单位:天津大学化工学院,天津,300072;中国石化北京燕化石油化工股份有限公司树脂应用研究所,北京,102500;天津大学化工学院,天津,300072;中国石化北京燕化石油化工股份有限公司树脂应用研究所,北京,102500
摘    要:研究了不同牌号的聚丙烯(PP)与纳米CaCO3复合材料的力学性能,考察了双螺杆挤出和密炼混合工艺及相容剂含量对PP/纳米CaCO3复合材料力学性能的影响,采用透射电子显微镜观察了纳米CaCO3在PP中的分散情况。结果表明,纳米CaCO3对不同牌号的PP均有增韧作用,对基材韧性较好的共聚PP增韧效果较显著.冲击强度提高了81%;双螺杆挤出和密炼混合均能使纳米CaCO3粒子在PP中达到较好的分散。

关 键 词:聚丙烯  纳米碳酸钙  增韧  冲击强度
文章编号:1002-1396(2005)06-0028-03
收稿时间:2005-06-10
修稿时间:2005-10-10

Modification of polypropylene with nano-CaCO3
Zhang Lihong,Xu Yongshen,Sun Yanwen,Zhao Hongzhu.Modification of polypropylene with nano-CaCO3[J].China Synthetic Resin and Plastics,2005,22(6):28-30.
Authors:Zhang Lihong  Xu Yongshen  Sun Yanwen  Zhao Hongzhu
Abstract:This paper studied mechanical properties of several grades of composite materials consisting of polypropylene (PP) and nano-CaCO_3, and examined the influences of twin-screw extrusion and internal mixing process and compatibilizer content on the mechanical properties of the composite. The distribution of nano-CaCO_3 particles in the PP matrix was observed by means of transmission electron microscope (TEM). The results indicate that nano-CaCO_3 can act as a toughening agent to all grades of PP involved in the experiment, however, the toughening effectiveness is specially dependent on the character of the matrix resin. A remarkable toughening effectiveness can be acquired for the matrix resin with a better toughness, as demonstrated by an 81% increase in the impact strength. Both twin-screw extrusion and internal mixing are able to make nano-CaCO_3 particles disperse homogeneously in PP.
Keywords:polypropylene  nano-CaCO3  toughening  impact strength
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