不同形貌碳酸钙颜料粒子的制备及在喷墨印刷中的应用

Preparation of Different Morphologies of Calcium Carbonate Pigment Particles and Application in Inkjet Printing

目的研究碳酸钙颜料粒子的形貌对喷墨打印涂层性能的影响。方法通过改变分散剂的种类制备不同的碳酸钙颜料粒子,并通过扫描电子显微镜(SEM)、傅里叶变换红外光谱仪(FT-IR)、粒径分析仪对制备的颜料粒子进行表征,研究分散剂种类对颜料形貌和粒径的影响。将4种不同形貌的碳酸钙分别作为颜料,将其应用于喷墨打印纸的表面涂层,并测试涂布纸张的动态渗透性、物理性能、喷墨打印性能。结果 CMC作为分散剂有助于形成粒径分布均匀的球形碳酸钙颜料粒子;纺锤形碳酸钙颜料粒子有助于提高涂布纸的平滑度和光泽度;球状体碳酸钙颜料粒子有助于改善涂布纸的喷墨印刷性能和渗透性;颜料粒子的粒径分布均匀性对涂布纸的动态渗透性影响较大,其影响超过颜料粒子形貌对涂布纸渗透性的影响。结论粒径分布均匀的球状体碳酸钙颜料粒子最适合用于喷墨印刷涂层,可以提高纸张的物理性能、印刷性能和动态渗透性能。

The work aims to study the influence of the morphology of Ca CO3 pigment particles on the performance of inkjet printing coatings. Different calcium carbonate pigment particles were prepared by changing the type of dispersant, and the prepared pigment particles were characterized by scanning electron microscopy（SEM）, Fourier transform infrared spectrometer（FT-IR） and particle size analyzer. The effects of dispersant type on the morphology and particle size of pigment were studied. Four types of calcium carbonate with different morphology were used as pigments and they were applied in the surface coating of inkjet printing paper. The dynamic permeability, physical properties and inkjet printing performance of the coated paper were tested. CMC used as a dispersant aided in the formation of spherical calcium carbonate pigment particles with a uniform particle size distribution; the spindle-shaped calcium carbonate pigment particles helped to improve the smoothness and gloss of the coated paper; the spherical calcium carbonate pigment particles helped to improve the inkjet printing performance and permeability of coated paper; and the uniformity of the particle size distribution of the pigment particles had a greater influence on the dynamic permeability of the coated paper, and the influence thereof exceeded the influence of the morphology of the pigment particles on the permeability of the coated paper. The spherical calcium carbonate pigment particles with uniform particle size distribution are most suitable for the inkjet printing coating and can improve the physical properties, printing performance and dynamic permeability of the paper.