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纳米碳酸钙改性聚丙烯 预览 被引量:9

Modification of polypropylene with nano-CaCO3
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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. This paper studied mechanical properties of several grades of composite materials consisting of polypropylene (PP) and nano-CaCO3, 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-CaCO3 particles in the PP matrix was observed by means of transmission electron microscope (TEM). The results indicate that nano-CaCO3 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-CaCO3 particles disperse homogeneously in PP.
作者 张立红 许湧深 孙颜文 赵红竹 Zhang Lihong, Xu Yongshen, Sun Yanwen, Zhao Hongzhu (1. School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072; 2. Resin Application Research Institute of Beijing Yanhua Petrochemical Co., Ltd., Beijing, 102500)
出处 《合成树脂及塑料》 EI CAS 北大核心 2005年第6期 28-30,共3页 China Synthetic Resin and Plastics
关键词 聚丙烯 纳米碳酸钙 增韧 冲击强度 polypropylene nano-CaCO3 toughening impact strength
作者简介 张立红,女,1969年生,天津大学在读研究生,从事聚丙烯加工和改性的研究工作。联系电话:(010)69341520;E-mail:zhanglh@bypc.com.cn。
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