SbOCl阻燃剂的酸法合成
来源期刊：中南大学学报(自然科学版)2000年第6期
论文作者：阳卫军 唐谟堂
文章页码：520 - 523
关键词：SbOCl;阻燃剂;合成
Key words：SbOCl; flame retardant; synthesi
摘 要：SbOCl是一种性能优良的无机锑系 阻燃剂 .作者以湿法锑白工艺中的中间产物Sb4O5Cl2 为原料在盐酸体系中合成了SbOCl阻燃剂 .当 ρ(Sb3+)≥ 330g·L-1,c(H+)≥ 9.70mol·L-1,t为 10 0～ 110℃时 ,可制备出纯度和白度都很高的微细SbOCl阻燃剂 ,收率达 70 %～ 80 % .产物为单斜晶型 ,平均粒径为 10 .30 μm ,颗粒形貌为立方体 .氧指数测试结果表明 ,其阻燃协效性能优于超细Sb2 O3,且制品的透明度高 ,添加到彩色PVC中的色料用量少 .本工艺中反应液可循环使用 ,基本无锑损失 ,无废液排放 ,成本比其它生产方法的低 ,合成工艺简单 ,具有一定的工业应用价值 .
Abstract: The antimony oxychloride SbOCl is a kind of high efficient flame retardant. In this paper, SbOCl is synthesized from Sb4O5Cl2 ,the semifinished product of Sb 2O 3 hydrometallurgic process,in a concentration hydrochloric acid solution when ρ (Sb 3+ )≥330 g·L -1 , c (H +)≥9.70 mol·L -1 , 100～110 ℃. The product is very pure with high white degree. The yield is 70%～80%. The structure and figuration of the product are characterized by XRD and SEM. The product is a kind of monoclinic crystal with 10.30 μm average granularity and cubic figure. The synergetic retardant effect with halogen of the product is superior to ultra fine Sb 2O 3. The synthetical process is simple with no antimony losing, no wast water letting, and with lower producing cost than the other present processes.
