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Preparation of a novel flame retardant based on diatomite/polyethyleneimine modified MWCNT for applications in silicone rubber composites
Journal of Rubber Research ( IF 1.3 ) Pub Date : 2021-01-25 , DOI: 10.1007/s42464-020-00079-z
Lu Yao , Wang Jincheng , Zhang Chenyang

A new flame retardant, DM/PEI/MWCNT, was prepared by self-assembly method based on non-covalent interactions between hydroxyl and amino groups on the surface of hydroxyl multi-walled carbon nanotubes (MWCNT), polyethyleneimine (PEI) and diatomite (DM). The flame-retardant composites were prepared by adding DM/PEI/MWCNT to room-temperature vulcanisated silicone rubber (RTV-silicone). The structure of the flame retardant and composites was characterised by polarising light microscope, scanning electron microscopy and Fourier-transform infrared spectroscopy. The flame retardancy of composites was studied by limited oxygen index and cone calorimeter measurement. Results showed that RTV-silicone composites with DM/PEI/MWCNT owned better flame retardancy. In addition, DM/PEI/MWCNT exhibited better compatibility in silicone rubber than that of unmodified DM, and the tensile properties of RTV-silicone/DM/PEI/MWCNT composites were improved compared to pure RTV-silicone.



中文翻译:

基于硅藻土/聚乙烯亚胺改性的MWCNT的新型阻燃剂的制备及其在硅橡胶复合材料中的应用

基于羟基多壁碳纳米管(MWCNT),聚乙烯亚胺(PEI)和硅藻土表面上的羟基与氨基之间的非共价相互作用,通过自组装方法制备了新型阻燃剂DM / PEI / MWCNT。 DM)。通过将DM / PEI / MWCNT添加到室温硫化的硅橡胶(RTV-硅酮)中来制备阻燃复合材料。通过偏光显微镜,扫描电子显微镜和傅立叶变换红外光谱对阻燃剂和复合材料的结构进行了表征。通过有限的氧指数和锥形量热仪研究了复合材料的阻燃性。结果表明,具有DM / PEI / MWCNT的RTV-硅氧烷复合材料具有更好的阻燃性。此外,

更新日期:2021-01-28
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