粉末涂料中易分散铝粉颜料的研究

Preparation of Easily-Dispersed Aluminum Pigment in Powder Coatings

针对铝粉颜料在粉末涂料中高添加量的情况下分散效果不佳、抗电压稳定性差、容易堵枪聚枪等缺点,对易分散铝粉颜料工业生产的关键技术进行了研究。通过对树脂种类、树脂包覆量及反应时间的选择性研究,确定了易分散铝粉颜料的生产工艺条件。以混合的活性树脂为包覆树脂,与致密硅包铝粉颜料的质量比为1:1的情况下,反应4 h后,制得易分散铝粉颜料,并通过与处理前的铝粉颜料对比,验证了该易分散铝粉颜料在添加量比较高的情况下,具有更优异的分散性、抗电压稳定性以及更好的耐酸碱性。

In view of the disadvantages of poor dispersion effect,poor voltage stability and easy to block the gun when aluminum pigment is added in powder coatings with high content,the key technology of industrial production for the easily-dispersed aluminum pigment is studied.Through investigation on the selection of resin and its dosage as well as reaction time,the production conditions of the easily-dispersed aluminum pigment are determined.The active resin is used as the coating resin to react with the dense silion coated aluminum pigment at a mass ratio of 1:1 for 4 hours to form the easily-dispered aluminum pigment.By comparing the aluminum pigment before and after treatment,it is revealed that the easily-dispersed aluminum pigment has better dispersibility,resistance to voltage stability and better chemical resistance.