4.7 Article

Boron nitride-reinforced porous aramid composites with enhanced mechanical performance and thermal conductivity

期刊

COMPOSITES SCIENCE AND TECHNOLOGY
卷 242, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2023.110211

关键词

A; Particle-reinforced composites; B; Mechanical properties; C; Elastic properties; D; Scanning electron microscopy (SEM); Polymer solution casting

向作者/读者索取更多资源

This study describes a method for preparing dense, micro, and nanoporous aramid films containing hexagonal boron nitride (hBN) to improve mechanical performance and thermal conductivity. Results showed that adding 10% hBN to microporous aramids increased Young's modulus by 130% and reduced density by 63%. The films containing hBN also exhibited enhanced thermal conductivity and diffusivity, making them suitable for applications in aerospace industry, protective equipment, and battery separators.
Aramids are materials with high-performance properties and used in advanced applications, including bullet-proof vests and aerospace industry components. Consequently, research is focused on improving their properties and reducing their density to achieve fuel reduction and enhanced comfort. Herein we describe the preparation of dense, micro, and nanoporous aramid films containing hexagonal boron nitride (hBN) with two objectives: improving mechanical performance and increasing thermal conductivity (TC) in porous films for specific ap-plications. The preparation procedure is simple and scalable, involving the addition of hBN and a porosity promoter to control the porous structure in the film's casting solution. Tensile tests revealed that the inclusion of 10% of hBN in microporous aramids led to a 130% increase in Young's modulus and 63% reduction in material's density compared to the dense commercial aramid. The orientation of the hBN in the films was also evaluated by considering the XRD and the thermal properties of the films. The films containing hBN exhibited enhanced TC and thermal diffusivity (TD) together with a very low density and improved mechanical performance, which can benefit applications in the aerospace industry, protective equipment, and battery separators.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据