摘要
采用湿化学法制备了氧化锑 /高岭土复合阻燃微粉 ,用热重 (TG)、差示扫描量热法 (DSC)对其阻燃特性进行了分析 ,用SEM分析了粒子形貌 ,激光光散射粒度分布仪分析了粒子的分布情况。热分析结果表明 ,与球磨法相比 ,湿化学法制备的样品的失重量大、失重温度范围广、放热峰范围广 ;化学法制备复合微粉的反应活化能与球磨法相差不大。SEM分析及粒度分析表明 :复合微粉大多处于 0 .2 0 μm以下 ,化学法制备的样品中以锑白粉为主 ,高岭土附在锑白粉表面 ,充分与锑白粉发生物理、化学作用。同时发现 ,样品6 0 0℃热处理 2h后 。
Ultrafine Sb 2O 3 powders were prepared by wet chemical methods,the characteristics of the composite powder was studided by TG,DSC,SEM and laser scattering methods.The TG and DSC showed that compared with ball mill method,the lose weight of wet chemical method sample was larger than that of the former;the lose weight temperature scope and exothermic peak temperature scope were also wider than that of the ball mill method sample.The chemical combination reaction active energy of the wet chemical method sample is similar to the ball mill method sample.The SEM analysis and laser scattering analysis showed that the main of the composite powder were smaller than 0.20μm,oblique square shape Sb 2O 3 were the main composition of the wet chemical method sample;kaolin adhered to the surface of the Sb 2O 3 sample,there were physical and chemical action between the kaolin powder and the surface of Sb 2O 3.After heated treatment for two hours at 600℃,the sample powder combine closer.
出处
《中国粉体技术》
CAS
2001年第1期1-4,共4页
China Powder Science and Technology
基金
广东省重点攻关项目资助 !(99-0 19-4 2 2 2 88)
