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+)≥330 g·L-1，c(H+)≥9．70 mol·L-1，t为100～110℃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10．30μm，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Sb2O3，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%The antimony oxychloride SbOC1 is a kind of high efficient flame retardant. In this paper, SbOCl is synthe-sized from Sb4 O5 C12, the semifinished product of Sb2 O3 hydrometallurgic process, in a concentration hydrochloric acid so- lution when ρ(Sb3+ )≥330 g·L-1 ,c(H+ )≥9.70 mol·L-1, 100 ～ 110 ℃. The product is very pure with high whitedegree. The yield is 70% ～ 80%. The structure and figuration of the product are characterized by XRD and SEM. Theproduct is a kind of monoclinic crystal with 10.30 μm average granularity and cubic figure. The synergetic retardant ef-fect with halogen of the product is superior to ultra-fine Sb2 O3.The synthetical process is simple with no antimony losing,no wast water letting, and with lower producing cost than the other present processes
展开▼
