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直接由工业Sb4O5Cl2合成SbOCl阻燃剂
Direct Synthesis of SbOCl Flame Retardant from Industrial Sb4O5Cl2
【摘要】 以湿法锑白工艺中的中间产物Sb4O5Cl2为原料,在常温(25℃左右)、低酸([H+]<3.1 mol/L)的温和条件下,合成了高纯度、高白度的微细Sb℃l阻燃剂. 最佳合成条件为:搅拌速度大于40 s(1,反应时间大于16 h, CSb3+≥290 g/L,这时固体Sb4O5Cl2的转化率达100%,产物平均粒度5.90 μm,颗粒为立方晶体. 测试表明,产物Sb℃l的阻燃协效性能优于超细Sb2O3,且能降低色料用量, 提高高聚物的透明度.
【Abstract】 SbOCl was synthesized from industrial product Sb4O5Cl2 and concentrated hydr℃hloric acid solution with low [H+] (<3.1 mol/L) at room temperature (about 25℃). Sb℃l with high purity and whiteness can be obtained from the reacting solution when the reaction time was greater than 16 h, agitation speed greater than 40 s(1, CSb3+( 290 g/L and [H+]<3.1 mol/L. The conversion of the solid Sb4O5Cl2 is 100(. The mean particle size is 5.90 (m with cubic-shape.
【基金】 国家“九五”科技攻关计划资金资助项目(编号:96-119-03-02-04)
- 【文献出处】 过程工程学报 ,The Chinese Journal of Process Engineering , 编辑部邮箱 ,2001年03期
- 【分类号】TQ314
- 【被引频次】2
- 【下载频次】101