Journal of the Korean Graphic Arts Communication Society (한국인쇄학회지)
- Volume 21 Issue 1
- /
- Pages.71-80
- /
- 2003
- /
- 1226-1149(pISSN)
Rheological Properties According to the Pigment Concentration of Ink
안료 함량에 따른 잉크의 레올로지 성질의 변화
- Park, Jeung-Min (Kwang Myung Ink MFG. Co. Ltd) ;
- Kim, Sung-Bin (Division of Image & Information, College of Engineering, Pukyong National University) ;
- Cho, Jin-Woo (Dept. of Graphic Arts Engineering, Graduate School of Pukyong National University)
- Published : 2003.03.01
Abstract
Printing inks are mainly composed of pigment and vehicles. Among these components, the Vehicle affect the rheologic property of the ink the most but pigment content or characteristic also affect to the fluidity property not less than the vehicle. In the study, with the same vehicle on each sample, by making the sample to increase pigment content gradually. It can be examined the influence of the pigment to the fluidity of ink. In result we found that the viscosity value of the low shear rate rang has relatively higher value with increasing the pigment content in the ink. According to higher pigment content, yield stress and thixotropy index increases gradually. Structure recovery of the ink is that, the higher pigment content's ink, the less changing shear rate, and it takes less time to recover.
Keywords