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为了获得具有较好耐热阻燃性能和较好亲和力的纳米氢氧化镁(MH)阻燃剂,利用水热与超重力方法制备了纳米MH/硅氧烷阻燃剂,利用TEM、BET比表面仪、热重分析仪等设备对纳米MH粒子及纳米MH/硅氧烷复合阻燃剂粒子进行了分析和表征。研究发现,纳米MH/硅氧烷复合阻燃剂稳定性明显优于其它方法制备的MH粒子,在粒子表面形成修饰层,且团聚现象明显减少。纳米复合粒子比表面积有所减低,亲和力增强。当纳米MH/硅氧烷复合阻燃剂作填料时,有利于提高其对复合阻燃剂的补强作用和耐热阻燃性能,为将该纳米粒子作为阻燃剂进一步应用奠定了基础。
In order to obtain nanometer magnesium hydroxide (MH) flame retardant with good heat-resistant flame retardancy and good affinity, a nano MH / siloxane flame retardant was prepared by hydrothermal and supergravity methods. The TEM, BET Surface analyzer, thermogravimetric analyzer and other equipment for nano-MH particles and nano MH / siloxane composite flame retardant particles were analyzed and characterized. It was found that the stability of the nano-MH / siloxane composite flame retardant is obviously better than the MH particles prepared by other methods, forming a modified layer on the particle surface, and the agglomeration phenomenon is obviously reduced. Nanocomposite particles have a reduced specific surface area, increased affinity. When nano-MH / siloxane composite flame retardant is used as filler, it is beneficial to enhance its reinforcing effect and heat-resistant flame-retardant property of composite flame retardant, which lays the foundation for further application of the nano-particle as flame retardant.