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Biomimetic Nacreous Composite Films toward Multipurpose Application Structured by Aramid Nanofibers and Edge-Hydroxylated Boron Nitride Nanosheets
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-06-15 , DOI: 10.1021/acs.iecr.2c01281 Lihua Zhao 1 , Chengmei Wei 1 , Junwen Ren 1 , Yuchao Li 2 , Jiajia Zheng 3 , Lichuan Jia 1 , Zhong Wang 1 , Shenli Jia 1, 4
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-06-15 , DOI: 10.1021/acs.iecr.2c01281 Lihua Zhao 1 , Chengmei Wei 1 , Junwen Ren 1 , Yuchao Li 2 , Jiajia Zheng 3 , Lichuan Jia 1 , Zhong Wang 1 , Shenli Jia 1, 4
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High-performance dielectric film is one of the most promising materials for comprehensive applications ranging from high-voltage electrical equipment to high-power electronic devices. We here report the fabrication of biomimetic nacreous multifunctional composite films by self-assembling nanoscale building blocks of one-dimensional (1D) aramid nanofibers (ANFs) and two-dimensional (2D) edge-hydroxylated boron nitride nanosheets (BNNS-OH). Synchronously, poly(vinyl alcohol) was introduced as soft glue to improve the interfacial interaction between ANFs and BNNS-OH by building a three-dimensional (3D) hydrogen-bond network. Attributing to the well-designed nanostructure and favorable interfacial hydrogen bonding, the resultant composite films exhibited a ultrastrong tensile strength (∼329.6 MPa), a high thermal conductivity (16.03 W m–1 K–1), outstanding dielectric properties, superior thermostability, and long life. Moreover, these synergistic properties of composite films were tunable by changing the contents of BNNS-OH to accommodate the requirements of multipurpose applications in the development of advanced insulation systems and thermal management materials.
中文翻译：
芳纶纳米纤维和边缘羟基化氮化硼纳米片构成的多用途仿生珠光复合膜
高性能介电薄膜是从高压电气设备到大功率电子器件等综合应用最有前途的材料之一。我们在这里报告了通过自组装一维（1D）芳纶纳米纤维（ANF）和二维（2D）边缘羟基化氮化硼纳米片（BNNS-OH）的纳米级构建块来制造仿生珠光多功能复合薄膜。同时，将聚乙烯醇作为软胶引入，通过构建三维 (3D) 氢键网络来改善 ANF 和 BNNS-OH 之间的界面相互作用。由于精心设计的纳米结构和良好的界面氢键，所得复合薄膜表现出超强的拉伸强度（~329.6 MPa），高导热率（16.03 W m–1 K –1 )、出色的介电性能、卓越的热稳定性和长寿命。此外，复合薄膜的这些协同特性可以通过改变 BNNS-OH 的含量来调节，以适应先进绝缘系统和热管理材料开发中的多用途应用的要求。
更新日期：2022-06-15
中文翻译：
芳纶纳米纤维和边缘羟基化氮化硼纳米片构成的多用途仿生珠光复合膜
高性能介电薄膜是从高压电气设备到大功率电子器件等综合应用最有前途的材料之一。我们在这里报告了通过自组装一维（1D）芳纶纳米纤维（ANF）和二维（2D）边缘羟基化氮化硼纳米片（BNNS-OH）的纳米级构建块来制造仿生珠光多功能复合薄膜。同时，将聚乙烯醇作为软胶引入，通过构建三维 (3D) 氢键网络来改善 ANF 和 BNNS-OH 之间的界面相互作用。由于精心设计的纳米结构和良好的界面氢键，所得复合薄膜表现出超强的拉伸强度（~329.6 MPa），高导热率（16.03 W m–1 K –1 )、出色的介电性能、卓越的热稳定性和长寿命。此外，复合薄膜的这些协同特性可以通过改变 BNNS-OH 的含量来调节，以适应先进绝缘系统和热管理材料开发中的多用途应用的要求。
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