원문정보
초록
영어
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 of characteristic also after to the fluidity property not less than the vehicle. In the study, It is tested effect to the ink fluidity and structure recovery according to change the pigment particle size. The ink fluidity have been observed by using rheometer at the various conditions and it has been tested to observe what the ink fluidity has different means. In result We have found that the viscosity value of the low shear rate range has relatively higher value with decreasing the pigment particle size in the ink. Also, it has been found that when the pigment particle size decreases, the yield stress gradually increase. In the case of ink's structure recovery, when the pigment particle size decreases in the ink, the less changing shear rate, and it takes less time to recover.
목차
1. 서론
2. 실험
2-1. 시료
2-2. 잉크의 유동성 및 구조회복성측정
3. 결과 및 고찰
3-1. 안료 입자크기에 따른 Viscosity Profile Curve
3-2. 안료 입자크기에 따른 yield value 측정 결과
3-3. 안료 입자크기에 따른 Step Change Test
3-4. Oscillation Measurements
3-5. Creep Measurements
5. 결론
참고문헌