원문정보
초록
영어
The Lithographic ink is composed of pigment, vehicle and additives. In especially, the vehicle is the most important element and consist of vegetable oils, mineral oils and resins. Varnishes have to resist certain forms of chemical and physical attack during ink manufacturing process and printing process So this varnish cooking is very important. In this paper, effects of cooking conditions of varnish using phenolic modified rosin ester on physical properties of the vehicle were studied. The varnish cooked according to temperature and time were compared in order of average molecular weight by the GPC method. and the rheological properties were found by rotational rheometer. And the emulsion behavior were compared by high speed emulsification tester which were set on 1200 rpm and 40℃ temperature (Novomatics Lithotronic). We displayed viscosity against tack(Inkometer Thwing-Albert M-106) by diagram.
목차
1. 서론
2. 실험
2-1. Varnish 제조
2-2. Varnish의 분자량 측정
2-3. Varnish의 유화시험
2-4. Varnish의 레올로지 특성 측정
2-5. Varnish의 Tack 측정
3. 결과 및 고찰
3-1. 로진변성 페놀수지 및 Sample의 분자량 분포변화
3-2. Varnish cooking에 따른 유화특성
3-3. Viscometirc flow 측정 결과
3-4. Relaxation 측정 결과
3-5. Creep 측정 결과
3-6. Varnishes 의 Tack Value 측정
4. 결론
참고문헌