吡啶硫酮锌的制备研究

Preparation of zinc pyrithione particles

对反应结晶法制备吡啶硫酮锌过程进行了实验研究,考察了溶液初始浓度、反应温度、反应时间、pH值、超声处理等因素对产品形貌和粒径的影响,采用扫描电镜(SEM)、激光粒度仪、X射线衍射仪(XRD)和红外光谱仪(FTIR)对产品进行分析与表征。结果表明:温度对产品形貌和粒径有影响,23℃以下时产品为爪形,23℃以上产品为棱柱状,且温度升高,粒径增大;其他条件对产品形貌和粒径影响不显著。

Zinc pyrithione （ZPT） powder was prepared by a reactive precipitation method. The effects of the operation conditions, such as concentration, temperature, reaction time, pH value and ultrasonic treatment on ZPT particle size, morphology, dispersion and yield of the products were experimentally investigated. The as-prepared particles were characterized by SEM, BET, XRD and FTIR techniques. The results indicate that temperature is the key factor for particle size, and the particle size increases in size with the increase of the reaction temperature. When the temperature is below 23℃, ZPT particle is claw-like and when the temperature is higher than 23 ℃, ZPT particle is prism-like.