UV喷墨油墨分散性评价方法的研究

Study of the Dispersion Evaluation Methods of UV-curable Inkjet Ink

设计了4种具有不同颜基比的UV喷墨油墨配方并制备了色浆样品,用3种方法对颜料粒子的分散状态进行了评价。研究结果表明,激光粒度仪测试法与显微镜图片观测法的评价结果一致,颜基比2∶1的色浆样品具有良好的分散性;紫外可见吸收光谱法的测试结果能够反映一定的趋势。

Four kinds UV-curable inkjet inks with different pigment-polymer ratios were designed and prepared. The dispersed state of the pigment was evaluated by three methods. The results indicated that the results measured by means of laser particle size analyzer are in accord with the micrographics through the microscope. The UV-curable inkjet ink has better dispersion when the pigment-polymer ratio of the UV-curable inkjet ink is 2 ： 1. The results obtained by the ultraviolet-visible molecular absorption spectrometry can reflect the trend of the dispersion. However, more research is needed if the method was developed to evaluate the dispersion.