| 矿物颗粒表面纳米化修饰及其在PP复合材料中的应用 |
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| 引用本文： | 樊世民,杨玉芬,盖国胜,付绍云,张以河,苗赫濯. 矿物颗粒表面纳米化修饰及其在PP复合材料中的应用[J]. 复合材料学报, 2005, 22(1): 68-73 |
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| 作者姓名： | 樊世民 杨玉芬 盖国胜 付绍云 张以河 苗赫濯 |
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| 作者单位： | 清华大学,材料科学与工程系,粉体工程研究室,北京,100084;清华大学,材料科学与工程系,粉体工程研究室,北京,100084;中国矿业大学,北京校区,化学与环境工程学院,北京,100083;中国科学院,理化技术研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金项目(50474003) |
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| 摘 要： | 通过化学方法成功地实现了矿物粉体在Ca (OH)2-H2O-CO2 体系中的表面纳米化修饰, 即在微米级重质碳酸钙、硅灰石粉体表面形核生成粒径均匀的纳米碳酸钙颗粒层。研究表明, 表面纳米化修饰后的矿物粉体表面的粗糙度大大增加, 尖锐的棱角得以钝化, 纳米化修饰后矿物粉体比表面积比原来提高至少200 %以上。将经表面纳米化修饰后的硅灰石粉体在聚丙烯(PP) 中填充应用, 较未经表面纳米化修饰的硅灰石粉体填料, 其抗冲击强度提高65 %以上, 延伸率提高200 %以上。
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| 关 键 词： | 矿物粉体 表面纳米化修饰 表面改性 应用 |
| 文章编号： | 1000-3851(2005)01-0068-06 |
| 收稿时间： | 2004-02-13 |
| 修稿时间： | 2004-03-30 |
PREPARATION OF INDUSTRIAL MINERAL COMPOSITE POWDERS ANDTHE APPLICATION IN PP COMPOSITES |
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| FAN Shimin,YANG Yufen,GAI Guosheng,FU Shaoyun,ZHANG Yihe,MIAO Hezhuo. PREPARATION OF INDUSTRIAL MINERAL COMPOSITE POWDERS ANDTHE APPLICATION IN PP COMPOSITES[J]. Acta Materiae Compositae Sinica, 2005, 22(1): 68-73 |
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| Authors: | FAN Shimin YANG Yufen GAI Guosheng FU Shaoyun ZHANG Yihe MIAO Hezhuo |
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| Affiliation: | 1. Powder Technology R &|D Group, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, China;2. School of Chemistry and Environmental Engineering, China University of Mining andTechnology (Beijing), Beijing 100083, China;3. Technical Institute of Physics and Chemistry, Chinese Academy ofSciences, Beijing 100080, China |
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| Abstract: | e mineral composite particles with rough surfaces and blunt edge angles , coated by nanometer calcium carbonate with a particle size range of 20～100 nm , were successfully prepared by a chemical method in Ca (OH)2-H2O-CO2 system. The specific surface area of the composite powders increased twice or above after coating. It is exhibited thatpolypropylene (PP) composites filled by the composite powders with nano-structure surface have better properties becausethe nano-structured mineral powders have bigger surface areas which would lead to more interfacial compatibility betweenpowders and polymer matrix when the powders are filled into the polymer and moreover , the blunt edge angles would reduce the stress concentration at angles , compared with un-coated powders as filler. |
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| Keywords: | mineral powder nano-structure surface surface modification application |
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