| 空心微珠填充聚氨酯复合泡沫塑料的宏、细观力学性能 |
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| 引用本文： | 卢子兴,王嵩,李忠明,芦艾,刘静.空心微珠填充聚氨酯复合泡沫塑料的宏、细观力学性能[J].航空学报,2006,27(5):799-804. |
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| 作者姓名： | 卢子兴 王嵩 李忠明 芦艾 刘静 |
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| 作者单位： | 1. 北京航空航天大学 航空科学与工程学院, 北京 100083;2. 四川大学 材料科学与工程学院, 四川 成都 610064;3. 中国工程物理研究院 化工材料研究所, 四川 绵阳 621900 |
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| 基金项目： | 国家自然科学基金
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国防重点实验室基金 |
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| 摘 要： | 针对不同空心玻璃微珠填充比的聚氨酯复合泡沫塑料进行了宏观压缩实验,研究了材料的准静态压缩性能。讨论了微珠与基体粘接界面质量以及微珠内外径比对材料性能的影响,发现界面粘接不良导致了材料性能的下降,并基于Mori-Tanaka方法和幂函数模型对不同粘接状况下材料弹性模量的上下限进行了预测。此外,还在扫描电镜下观察了材料形貌,并进行了细观压缩实验,观察了表面胞体的变形和失效情况,从而对这类材料的变形和破坏机理有了进一步的认识。
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| 关 键 词： | 复合泡沫塑料 压缩 力学性能 失效机理 |
| 文章编号： | 1000-6893(2006)05-0799-06 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005年3月7日 |
Macroscopic and Microscopic Mechanical Properties of Polyurethane Syntactic Foams Filled with Hollow Microspheres |
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| LU Zi-xing,WANG Song,LI Zhong-ming,LU Ai,LIU Jing.Macroscopic and Microscopic Mechanical Properties of Polyurethane Syntactic Foams Filled with Hollow Microspheres[J].Acta Aeronautica et Astronautica Sinica,2006,27(5):799-804. |
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| Authors: | LU Zi-xing WANG Song LI Zhong-ming LU Ai LIU Jing |
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| Institution: | 1. School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;2. College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China;3. Institute of Chemical Materials, Academy of Engineering Physics of China, Mianyang 621900, China |
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| Abstract: | Macroscopic compressive tests of polyurethane syntactic foams with different weight fractions of hollow glass microspheres are conducted.The quasi-static compressive mechanical properties of those materials have been investigated in this paper.The effects of the hollow sphere-matrix interfacial quality and the diameter ratio of hollow sphere are discussed.It is found that the bad bonding induces the decline of material properties.Furthermore,the upper limits and lower limits of Young's Modulus at different bonding conditions are predicted by Mori-Tanaka method and power law.In addition,the micro-structures of those materials are observed by SEM method,and the deformation and failure process are also observed in situ by a SEM during compression.It help to obtain a comprehensive realization to the failure mechanisms of those materials. |
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| Keywords: | syntactic foams compression mechanical property failure mechanism |
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