摘要：采用金红石型钛白粉为颜料,按照一定的配方及方法制备漆浆,利用湿膜制备样品,采用分光光度计进行样品反射率的检测,利用精确色彩品质控制软件直接表征样品的遮盖力,同时对影响遮盖力测试的关键因素进行优化。结果表明,采用丙烯酸清漆为漆料,在颜料体积分数为16%,振荡研磨时间为90 min,湿膜厚度为100μm的条件下,金红石型钛白粉漆浆样品适于采用分光光度计直接表征遮盖力的方法。

关键词：钛白粉；遮盖力；分光光度计

Abstract： Taking rutile titanium dioxide as the pigment， the paste was prepared according to a certain formula and method. The wet film was used for sample preparation. A spectrophotometer was used for detection of the reflectivity of samples. The hiding power of samples was directly characterized by precise color quality control software. Key factors affecting the hiding power measurement were optimized. The results show that taking acrylic varnish as the paint vehicle， rutile titanium dioxide paint slurry samples are suitable for the method of characterizing hiding power directly using spectrophotometer at the conditions that the volume fraction of pigment is 16% ， the time for oscillatory grinding is 90 min， and the wet film thickness is 100 μm. 

Keywords: titanium dioxide; hiding power; spectrophotometer