期刊
CHEMICAL ENGINEERING JOURNAL
卷 426, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.130717
关键词
Fire-warning; Black phosphorene; Molybdenum disulfide; Flame retardancy; Response ability
资金
- National Key R&D Program of China [2017YFD0601003]
- Chongqing Technology Innovation and Appli-cation Development Project of China [cstc2020jscx-msxm0339]
The prepared nano-filler (BP-MoS2) enhances the fire resistance of the fire alarm film, allowing for ultra-fast response capability and high flame retardancy. This approach offers a new perspective for the design and development of intelligent fire alarm devices.
Design and exploitation of smart fire-warning devices with ultrasensitive response capability are always an urgent need for effective fire protection. Herein, a nano-filler (BP-MoS2) is prepared by ball milling black phosphorene and molybdenum disulfide and added into the graphene oxide (GO) film to fabricate a multifunctional film with high fire resistance and rapid response ability. When the addition of BP-MoS2 is 20.0 wt%, the GO/BP-MoS2 20.0 shows an excellent flame retardancy. The residual char rate is improved from 46.60% to 66.65%, and its peak of heat release rate (pHRR) value has reduced from 599.92 W g(-1) to 274.00 W g(-1), resulting in a 54.33% decrease, which is attributed to the ultra-fast catalytic char formation and synergistic flame retardancy of BP and MoS2. Meanwhile, the composite film can still maintain the original shape within 15 s of ignition. More interestingly, when encountering a flame attack, it reveals an ultra-fast fire warning response (about 1 s), which is attributed to the fast carbonization after contacting with flame. Such approach offers a novel perspective for the preparation of intelligent fire alarm devices with ultra-fast response ability.
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