Influence of Silica Pigments with Different Sizes on the Performances of Coated Ink-Jet Printing Paper

摘要

Coated ink-jet printing paper, with a porous coating layer on its surface, has a good performance of ink absorption, and its quality of printing is significantly higher than the ordinary ink-jet printing paper. Therefore, the problem about how to improve the performances of the coated ink-jet printing paper is attracting more attention. So, in this study, it used the self-made silica with different particle sizes of D90, including 5.9, 13.6, 21.1, 25.6, 35.4 urn and the mixtures of two kinds of silica with different particle sizes, including 5.9 and 13.6 μn, 5.9 and 21.1 μm, 13.6 and 21.1 μm to prepare the coated ink-jet printing paper as pigments. The performances of different paper were compared by measuring the contact angle, roughness, air permeability, solid density and print contrast. Results of the experiment showed that the smaller size of silica particle was, the better the wettability of coated paper surface was. The roughness and air permeability of coated paper added with the increase of particle size, and the speed of add was faster and faster. But the print contrast and solid density dropped with it, and the speed of decrease was slower and slower. When the smaller particles were mixed in the larger pigment particles, it could improve the performances of coated paper. In conclusion, the coated paper using 5.9 μm silica particles as pigment had the best performances in the different coated paper prepared in the experiment.