| 新型的高杀菌纳米二氧化钛/聚丙烯复合材料的结构和物理特性研究 |
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| 引用本文： | 童玉清,田明,徐瑞芬,胡伟康,于亮,张立群.新型的高杀菌纳米二氧化钛/聚丙烯复合材料的结构和物理特性研究[J].复合材料学报,2003,20(5):88-94. |
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| 作者姓名： | 童玉清 田明 徐瑞芬 胡伟康 于亮 张立群 |
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| 作者单位： | 1. 深圳职业技术学院,先进制造技术与工程系,深圳,518055
2. 北京化工大学,北京市新型高分子材料制备与成型加工重点实验室,北京,100029 |
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| 基金项目： | 北京市科技新星计划H010410010112，北京市自然科学基金重点基金项目B2031001，国家自然科学基金课题50173003 |
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| 摘 要： | 基于一种新型的纳米二氧化钛(TiO2)粉体,利用熔体共混方式制备了纳米TiO2/聚丙烯(PP)复合材料,研究了复合材料的相分散结构、结晶特性、力学性能、杀菌性能和流动性能。结果发现:新型纳米TiO2在聚丙烯中有较好的分散度,绝大多数纳米TiO2在聚丙烯中的聚集体尺寸接近于100纳米;新型纳米TiO2对聚丙烯有一定的结晶成核作用,但并不能提高结晶度;复合材料的力学性能随纳米TiO2含量的增加呈现出拉伸强度下降,伸长率降低,模量和冲击强度上升的趋势。2％纳米TiO2含量的聚丙烯复合材料的综合物理机械性能较好。新型纳米TiO2填充到PP中可以起到良好的抗菌杀菌作用,但也在一定程度上使聚丙烯发生氧化降解,进而导致纳米TiO2/聚丙烯复合材料的流动性略优于纯聚丙烯。
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| 关 键 词： | 纳米二氧化钛 细菌 聚丙烯 复合材料 结晶 |
| 文章编号： | 1000-3851(2003)05-0088-07 |
| 收稿时间： | 2002-10-18 |
| 修稿时间： | 2002年10月18 |
THE NOVEL HIGH-ANTIMICROBIAL NANO-TiO2/PP COMPOSITES AND ITS STRUCTURE AND PROPERTIES |
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| TONG Yuqing,TIAN Ming,XU Ruifen,HU Weikang,YU Liang,ZHANG Liqun.THE NOVEL HIGH-ANTIMICROBIAL NANO-TiO2/PP COMPOSITES AND ITS STRUCTURE AND PROPERTIES[J].Acta Materiae Compositae Sinica,2003,20(5):88-94. |
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| Authors: | TONG Yuqing TIAN Ming XU Ruifen HU Weikang YU Liang ZHANG Liqun |
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| Affiliation: | 1. Beijing Key Laboratory on Preparation and Processing of Novel Polymer Materials,Beijing University of Chemical Technology, Beijing 100029,China;
2. Department of Advanced Manufacture Technology, Shenzhen Polytechnic, Shenzhen 518055,China |
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| Abstract: | Based on a novel nano-TiO2 powder, Polypropylene/TiO2 composites was made by direct melt blending. The morphology, crystallization, mechanical properties, antimicrobial properties, rheological properties of the new composites were investigated. The results showed that the novel TiO2 nano-powder dispersed well in PP matrix; the sizes of most agglomerates nearly reached 100 nm; TiO2 nano-powder could induce crystallization of PP, however, the crystallinity of PP decreased some; tensile strength and elongation of composites declined while modulus and impact strength of composites rose with the loading of nano-powder; nano-TiO2/PP composites with 2% loading of powder demonstrated an overall excellent mechanical properties. The novel composites have high antimicrobial properties, better flow ability than PP due to degradation of PP caused by the oxidation effect of nano-TiO2. |
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| Keywords: | nano-titania antimicrobial polypropylene composites crystallization |
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