摘要
探讨了在有机分散剂存在下，采用氨水中和水解TiCl4制备高纯TiO2的工艺方法。研究了分散剂种类和用量，反应物浓度，加料方式,熟化温度和时间对TiO2性能的影响。制取了纯度≥99．5％，粒径＜1．0μ，近似球形的TiO2微粉。100kg级的试验结果表明，TiO2微粉的理化指标和制成的PTC电子元件的电性能均接近日本TDK公司同类产品的技术指标。
The process for preparation of high purity ultrafine TiO2 powder by means of neutralization of hydrolyzed TiCl4 solution with ammonia in the presence of organic dispersant was developed. The effects of the dispersant type and its consumption, concentration of reactants, feeding mode,maturing temperature and time on the properties of TiO2 were investigated.The spheroidal Tio2 powder was prepared whose purity is over 99.5%,particle diameter is less than 1.0μ,The results of 100kg grade test show the physicochemical properties of the ultrafine TiO2 powder and the characteristics of PTC electronic component made from the TiO2 powder approach the technical index of similar products of TDK Co. in Japan.
出处
《钢铁钒钛》
CAS
北大核心
1998年第2期13-19,共7页
Iron Steel Vanadium Titanium
关键词
四氯化钛
水解分散剂
二氧化钛
titanic chloride,hydrolysis,dispersant,high purity ultrafine titanium oxide
