| 高隔热性能和机械性能的聚酰亚胺/二氧化硅气凝胶复合膜 |
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| 引用本文： | 雷尧飞,王美月,陈晓红,胡子君,宋怀河. 高隔热性能和机械性能的聚酰亚胺/二氧化硅气凝胶复合膜[J]. 稀有金属材料与工程, 2018, 47(S2): 242-245 |
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| 作者姓名： | 雷尧飞 王美月 陈晓红 胡子君 宋怀河 |
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| 作者单位： | 北京化工大学 化工资源有效利用国家重点实验室,北京化工大学 化工资源有效利用国家重点实验室,北京化工大学 化工资源有效利用国家重点实验室,,北京化工大学 化工资源有效利用国家重点实验室 |
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| 摘 要： | 二氧化硅气凝胶的大规模应用受限于许多原因,机械性能差是其中之一。如何在应用中发挥气凝胶的优势一直是研究关注的重点。本研究将二氧化硅气凝胶微球添加到聚酰亚胺中成功制备了聚酰亚胺/二氧化硅气凝胶复合膜。实验结果显示：与纯聚酰亚胺膜相比,复合膜的热导率降低,并且随着添加量的增加而继续下降,最小值为0.321 W m-1 K-1。与纯聚酰亚胺膜相比,复合膜的机械性能有所下降。因此,在膜材料应用中兼顾机械性能和隔热性能是很重要的。本研究丰富了气凝胶的应用形式。
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| 关 键 词： | 二氧化硅气凝胶 聚酰亚胺 隔热性能 机械强度 |
| 收稿时间： | 2017-11-27 |
| 修稿时间： | 2017-11-27 |
Polyimide/silica aerogel flexible composite film with high thermal insulation and good mechanical strength |
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| Yaofei Lei,Meiyue Wang,Xiaohong Chen,Zijun Hu and Huaihe Song. Polyimide/silica aerogel flexible composite film with high thermal insulation and good mechanical strength[J]. Rare Metal Materials and Engineering, 2018, 47(S2): 242-245 |
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| Authors: | Yaofei Lei Meiyue Wang Xiaohong Chen Zijun Hu Huaihe Song |
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| Affiliation: | State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,National Key Laboratory of Advanced Functional Composite Materials,Spaceflight Material and Technology Research Institute,State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology |
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| Abstract: | The large-scale application of silica aerogels is restricted due to many reasons, one of which is the poor mechanical. How to exert superiority of aerogels in application has always been the focus of research. In this work, the silica aerogel microspheres were added into polyimide to prepare composite film successfully. The results showed that the thermal conductivity of composite film was declined compared with that of pure polyimide film and kept decreasing with increasing additions, the lowest value was 0.321 W m-1 K-1. The mechanical strength is weakened compared with that of pure polyimide film. Therefore, the trade-off between thermal insulation performance and mechanical property is important in application of such film materials. The study enriches the application form of aerogels. |
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| Keywords: | silica aerogels polyimide thermal insulation mechanical strength |
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