-1 K-1。與純聚酰亞胺膜相比,復(fù)合膜的機械性能有所下降。因此,在膜材料應(yīng)用中兼顧機械性能和隔熱性能是很重要的。本研究豐富了氣凝膠的應(yīng)用形式。"/>

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高隔熱性能和機械性能的聚酰亞胺/二氧化硅氣凝膠復(fù)合膜
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北京化工大學(xué) 化工資源有效利用國家重點實驗室,北京化工大學(xué) 化工資源有效利用國家重點實驗室,北京化工大學(xué) 化工資源有效利用國家重點實驗室,,北京化工大學(xué) 化工資源有效利用國家重點實驗室

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Polyimide/silica aerogel flexible composite film with high thermal insulation and good mechanical strength
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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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    摘要:

    二氧化硅氣凝膠的大規(guī)模應(yīng)用受限于許多原因,機械性能差是其中之一。如何在應(yīng)用中發(fā)揮氣凝膠的優(yōu)勢一直是研究關(guān)注的重點。本研究將二氧化硅氣凝膠微球添加到聚酰亞胺中成功制備了聚酰亞胺/二氧化硅氣凝膠復(fù)合膜。實驗結(jié)果顯示：與純聚酰亞胺膜相比,復(fù)合膜的熱導(dǎo)率降低,并且隨著添加量的增加而繼續(xù)下降,最小值為0.321 W m-1 K-1。與純聚酰亞胺膜相比,復(fù)合膜的機械性能有所下降。因此,在膜材料應(yīng)用中兼顧機械性能和隔熱性能是很重要的。本研究豐富了氣凝膠的應(yīng)用形式。

    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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雷堯飛,王美月,陳曉紅,胡子君,宋懷河.高隔熱性能和機械性能的聚酰亞胺/二氧化硅氣凝膠復(fù)合膜[J].稀有金屬材料與工程,2018,47(S2):242~245.[Yaofei Lei, Meiyue Wang, Xiaohong Chen, Zijun Hu, 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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  • 收稿日期:2017-11-27
  • 最后修改日期:2017-11-27
  • 錄用日期:2018-02-01
  • 在線發(fā)布日期: 2018-11-01
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