| 硅酸盐纳米纤维增强橡胶复合材料的结构与性能 |
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| 引用本文： | 肖春金,田明,张立群. 硅酸盐纳米纤维增强橡胶复合材料的结构与性能[J]. 复合材料学报, 2007, 24(2): 79-85 |
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| 作者姓名： | 肖春金 田明 张立群 |
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| 作者单位： | 北京化工大学,教育部纳米材料重点实验室,北京,100029;北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京,100029 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，北京市科技新星计划项目 |
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| 摘 要： | 利用天然针状硅酸盐——凹凸棒石(AT)的结构特点, 采用机械共混法并结合原位改性技术制备了一系列硅酸盐纳米纤维/橡胶复合材料, 研究了复合材料的结构与性能, 分析了针状硅酸盐良好增强效果的内在机制。借助硅烷偶联剂的原位改性和混合过程中的机械剪切力, AT微米聚集体被解离成长径比为10~30的纳米纤维分散在橡胶基体中, 纳米复合材料表现出短纤维/橡胶复合材料(SFRC)的应力-应变特性和明显的力学性能各向异性。而且, AT/橡胶纳米复合材料具有优良的高温模量和加工性能。AT的优良的增强效果来源于AT的纳米分散和良好的纤维-橡胶界面结合。
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| 关 键 词： | 硅酸盐纳米纤维 橡胶 复合材料 结构 性能 |
| 文章编号： | 1000-3851（2007）02-0079-07 |
| 收稿时间： | 2006-04-17 |
| 修稿时间： | 2006-04-172006-11-21 |
Structure and properties of silicate nano-fiber/rubber composites |
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| XIAO Chunjin,TIAN Ming,ZHANG Liqun. Structure and properties of silicate nano-fiber/rubber composites[J]. Acta Materiae Compositae Sinica, 2007, 24(2): 79-85 |
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| Authors: | XIAO Chunjin TIAN Ming ZHANG Liqun |
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| Affiliation: | 1.Key Laboratory for Nanomaterials, Ministry of Education;2.Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Based on the special structural properties of natural fibril silicate attapulgite, silicate nano-fiber/rubber composites were successfully prepared by mechanically compounding, combined with the in-situ modification method. The structure and properties of the composites were studied, and the reinforcing mechanism of AT was discussed as well. Upon shear force during mixing as well as in-situ modification with silane coupling agent, attapulgite micron particles are separated into numerous nano-fibers with the length/diameter ratio of 10~30 into the rubber matrix. AT/rubber composites possess stress-strain behavior and distinct anisotropy similar to those for short fiber reinforced rubber composites (SFRC), higher modulus at higher temperatures and good processing property, resulted from nano-dispersing of AT and good rubber-AT interfacial bonding. |
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| Keywords: | silicate nano-fiber rubber composites structure properties |
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