Boron Nitride Aerogels with Super‐Flexibility Ranging from Liquid Nitrogen Temperature to 1000 °C. (25th March 2019)

• Record Type: Journal Article
• Authors: Li, Guangyong; Zhu, Mengya; Gong, Wenbin; Du, Ran; Eychmüller, Alexander; Li, Taotao; Lv, Weibang; Zhang, Xuetong
• Is Part Of: Advanced functional materials. Volume 29:Number 20(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-03-25
• Subjects: aerogel -- boron nitride -- nanoribbon -- super‐flexibility; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201900188
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Aerogels with extraordinary mechanical properties attract a lot of interest for their wide spread applications. However, the required flexibility is yet to be satisfied, especially under extreme conditions. Herein, a boron nitride nanoribbon aerogel with excellent temperature‐invariant super‐flexibility is developed by high temperature amination of a melamine diborate precursor formed by hydrogen bonding assembly. The unique structure of the aerogel provides it with outstanding compressing/bending/twisting elasticity, cutting resistance, and recoverable properties. Furthermore, the excellent mechanical super‐flexibility is maintained over a wide temperature range, from liquid nitrogen temperature (−196 °C) to higher than 1000 °C, which extends their possible applications to harsh environments. Abstract : Super‐flexible boron nitride nanoribbon aerogels are produced by high temperature amination of melamine and boric acid assemblies, showing outstanding compressing/bending/twisting elasticity, cutting resistance, and recoverable properties over a wide range, from liquid nitrogen temperature to more than 1000 °C.