期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 649, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2022.129370
关键词
Aramid nanofiber; Silver nanoparticles; MXene; Thermal conductivity; Flame retardant
资金
- National Key R & D Program of China [2017YFD0601003]
- Chongqing Technology Innovation and Appli-cation Development Project, China [cstc2020jscx-msxm0339]
Inspired by traditional Chinese cuisine Ma Lao, a novel organic inorganic hybrid thermal conductive chain was prepared by depositing silver nanoparticles on the surface of aramid nanofiber (ANF@Ag). MXene/ANF@Ag nanocomposite films with different MXene concentrations were also prepared. The nanocomposite film exhibited excellent flame retardant properties, high thermal conductivity, and the ability to convert toxic gases into non-toxic carbon dioxide.
Here, inspired by the traditional Chinese cuisine Ma Lao, aramid nanofiber (ANF) decorated by silver nanoparticles (ANF@Ag) is prepared via in-situ depositing process of Ag ions on the surface of ANF based on dopamine chemistry reduction method. MXene/ANF@Ag nanocomposite films with various MXene concentrations are further prepared via a vacuum-assisted self-assembly strategy. ANF@Ag is designed as the organic inorganic hybrid thermal conductive chains, while Ag nanoparticles not only play a role in heat transfer, but also catalyze the carbonization process and form massive inert gas during the combustion. Surprisingly revealing that toxic gases effectively catalyzing into friendly non-toxic carbon dioxide (CO2) and forming the CO2 molecular fire extinguisher-like effect, which are suitable for the development of ecological sustainability. The 5MXene/ANF@Ag nanocomposite film shows excellent flame retardant properties, and the total heat release (THR) is only 0.1 kJg(-1). Meanwhile, the high in-plane thermal conductivity of 5-MXene/ANF@Ag is 18.56 W.m(-1).K-1, which is enhanced about 4.97 times higher than pure ANF film. It can be ascribed to the hydrogen bonding interactions and synergistic bridging effects from the MXene nanosheets and thermal conductive chains of rigid ANF@Ag. Therefore, this work displays a novel tactic to provide favorable interfacial interactions for the uninflammable thermal management materials.
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。
推荐
暂无数据