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Synergistic Effect of Mesoporous Nanocomposites with Different Pore Sizes and Structures on Fire Safety and Smoke Suppression of Epoxy Resin
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2019-12-19 , DOI: 10.1002/mame.201900640 Xiu Wang 1 , Ting Chen 1 , Chaohua Peng 1 , Jing Hong 1 , Zhenwu Lu 1 , Conghui Yuan 1 , Birong Zeng 1 , Weiang Luo 1 , Lizong Dai 1
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2019-12-19 , DOI: 10.1002/mame.201900640 Xiu Wang 1 , Ting Chen 1 , Chaohua Peng 1 , Jing Hong 1 , Zhenwu Lu 1 , Conghui Yuan 1 , Birong Zeng 1 , Weiang Luo 1 , Lizong Dai 1
Affiliation
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Epoxy resin (EP) is extremely flammable, and smoke release during combusting is considered toxic and harmful for human health. Mesoporous materials offer reliable desorption performance due to their large specific surface area. Therefore, the construction of mesoporous nanocomposites is a novel method for enhanced smoke suppression effect of EP. In this work, zinc hydroxystannate (ZHS)‐mesoporous silica (SBA‐15 and MCM‐41) modified reduced graphene oxide (RGO) is successfully prepared and used to enhance the fire safety of EP. SBA‐15‐RGO‐ZHS/EP exhibits the lowest total smoke production (22.8 m2) and peak heat release rate (416 kW m−2), which are reduced by 55% and 37% compared with pure EP, respectively. Furthermore, the effect of mesoporous nanoparticles is also investigated. Apparently, the smoke suppression effect and flame retardancy of SBA‐15‐RGO‐ZHS/EP is even more remarkable than that of MCM‐41‐RGO‐ZHS/EP, which indicates that the pore size and structure of mesoporous are important factors for reducing the smoke toxicity of EP. Finally, it is verified that its enhanced fire safety is attributed to the synergistic action of physical barrier properties of RGO, “labyrinth” effect of SBA‐15, and catalytic ability of ZHS.
中文翻译：
孔径和结构不同的介孔纳米复合材料对环氧树脂防火和抑烟的协同作用
环氧树脂（EP）极易燃烧，燃烧时释放的烟雾被认为是有毒的，对人体健康有害。中孔材料因其大的比表面积而提供了可靠的解吸性能。因此，介孔纳米复合材料的构建是提高EP抑烟效果的新方法。在这项工作中，成功制备了羟基锡酸锌（ZHS）-介孔二氧化硅（SBA-15和MCM-41）改性的氧化石墨烯（RGO），并用于增强EP的防火性。SBA-15-RGO-ZHS / EP表现出最低的总烟雾产生量（22.8 m 2）和峰值放热率（416 kW m -2），与纯EP相比分别减少了55％和37％。此外，还研究了介孔纳米粒子的作用。显然，SBA-15-RGO-ZHS / EP的烟气抑制效果和阻燃性甚至比MCM-41-RGO-ZHS / EP的烟气抑制效果和阻燃性更显着，这表明中孔的孔径和结构是影响其性能的重要因素。降低EP的烟气毒性。最后，证实了其增强的消防安全性归因于RGO的物理屏障特性，SBA-15的“迷宫”效应以及ZHS的催化能力的协同作用。
更新日期：2020-02-14
中文翻译：
孔径和结构不同的介孔纳米复合材料对环氧树脂防火和抑烟的协同作用
环氧树脂（EP）极易燃烧，燃烧时释放的烟雾被认为是有毒的，对人体健康有害。中孔材料因其大的比表面积而提供了可靠的解吸性能。因此，介孔纳米复合材料的构建是提高EP抑烟效果的新方法。在这项工作中，成功制备了羟基锡酸锌（ZHS）-介孔二氧化硅（SBA-15和MCM-41）改性的氧化石墨烯（RGO），并用于增强EP的防火性。SBA-15-RGO-ZHS / EP表现出最低的总烟雾产生量（22.8 m 2）和峰值放热率（416 kW m -2），与纯EP相比分别减少了55％和37％。此外，还研究了介孔纳米粒子的作用。显然，SBA-15-RGO-ZHS / EP的烟气抑制效果和阻燃性甚至比MCM-41-RGO-ZHS / EP的烟气抑制效果和阻燃性更显着，这表明中孔的孔径和结构是影响其性能的重要因素。降低EP的烟气毒性。最后，证实了其增强的消防安全性归因于RGO的物理屏障特性，SBA-15的“迷宫”效应以及ZHS的催化能力的协同作用。
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