Facile preparation of BP-MoS2/GO composite films with excellent flame retardancy and ultrasensitive response for smart fire alarm
作者：Zhencai Qu, Chang-an Xu, Xiaobin Li, Yifei Wu, Kunxin Wang, Xiao,Xiaole Zheng, Xiaohua Cui
關鍵字：Fire-warning,Black phosphorene,Molybdenum disulfide
論文來源：期刊
具體來源：Chemical Engineering Journal
發表時間：2021年
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/BPMoS2 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.