摘要
通过机械球磨法制备不同粒径的氢氧化铝,配制不同的表面活性剂,采用湿法工艺对氢氧化铝进行表面改性研究.通过对比表面积、吸油值、SEM等性能测定,发现改性后的氢氧化铝吸油量降低,明显改善了在聚合物单体中的分散性.通过热分析研究了粒度对氢氧化铝的热分解影响,发现粒度达到3μm后,分解曲线变成只有一个独峰.与PVC复合进行阻燃测试,发现氢氧化铝的粒度越细,填充量增加,阻燃效果好.表明即使颗粒较粗的氢氧化铝,经过合适的表面改性,在PVC中也可以实现高掺量.
The grain size of aluminium hydroxide is controlled by ball milling time. Different polymeric surfactants are prepared . Aluminium hydroxide is modified by the surfactant with the wet craft. The data obtained from the specific surface area, oil absorption value and SEM indicate that the oil absorption value of modified aluminium hydroxide is lower than the unmodified aluminium hydroxide. So in the organic compound the append quantity of aluminium hydroxide is improved. The effect of grain size on the mass change of aluminium hydroxide is studied. Results show that the peaks of decompounded change only with the grain size, and only a peak when grain size is 3 μm. Flame retardance results of aluminium hydroxide compounded with PVC show that the aluminium hydroxide additive quantity increases, while its retardancy effect improves , when the aluminium hydroxide grain size decreases. It is concluded that more aluminium hydroxide can be added into PVC by surface modification.
出处
《桂林工学院学报》
北大核心
2007年第1期118-121,共4页
Journal of Guilin University of Technology
基金
广西区学位委员会2003年学位授权点学科建设经费资助项目
关键词
氢氧化铝
表面改性
阻燃剂
aluminium hydroxide
surface modification
flame retardant
