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PUKYONG Repository 대학원 인쇄공학과

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Alternative Title: A Study on the Printability of Lithographic Ink according to Alkyd Resin Contents

Abstract: Rosin-modified phenolic resins have been used in all types of ink vehicle system and there are many grades commercially available. They have limited solubility in aliphatic distillate which makes them ideal for use in quick-setting varnishs and gels. Generally they impart tough and glossy finishes with good chemical resistance. They are compatible with alkyds and other resins to produce high gloss inks with good rub resistance.
Thus, in this paper, the effects of different ratios of alkyd resin to rosin-modified phenolic resin on rheology properties was explored. Five different ratios of alkyd resin to rosin-modified phenolic resin were used in the formulation of lithographic inks.
The results showed that tack, viscosity, yield value decreased. but misting, setting time increased. As the ratio of alkyd resin rose, gloss and density increased, but decreased when it exceeds a certain rate. These results suggested that proper mixing rosin-modified phenolic resins with alkyd resins can result in good quality inks.

URI: https://repository.pknu.ac.kr:8443/handle/2021.oak/12437
http://pknu.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001967302

Table Of Contents: 1. 서 론 1

2. 이 론 3
2-1. 로진 변성 페놀 수지 3
2-2. 알키드 수지 3
2-2-1. Oil의 구성과 특성 4
2-2-2. 알키드 물성에 있어서 Oil의 영향 4
2-2-3. 알키드의 유장과 유 함유량 5
2-3. 인쇄 잉크의 유동성 6
2-4. 뉴튼 거동과 비뉴튼 거동 7
2-5. 선형 탄성체와 선형 점성유체 9
2-5-1. 선형 탄성체 9
2-5-2. 선형 점성유체 10
2-6. Tack 12
2-7. 유화 14

3. 실 험 16
3-1. 시료 16
3-2. Varnish 제조 16
3-3. 잉크 제조 17
3-4. 잉크 물성 측정 18
3-4-1. Tack, Flow, Viscosity, Yield value 측정 18
3-4-2. 잉크의 Rheology 측정 18
3-5. 인쇄 적성 19
3-5-1. Density, Setting time, Rub resistance 측정 19
3-5-2. 잉크 Misting 측정 19
3-5-3. Ink film thickness에 따른 Density, Gloss 측정 20
3-6. 잉크의 유화적성 20

4. 결과 및 고찰 21
4-1. 수지 함량에 따른 잉크 물성 변화 21
4-1-1. Tack, Flow, Viscosity, Yield value 변화 21
4-1-2. 잉크 Rheology 변화 22
4-1-2-1. 전단 속도에 의한 점도와 전단 응력의 변화 22
4-1-2-2. Oscillation measurement 23
4-2. 인쇄 적성 25
4-2-1. Density, Setting time, Rub resistance 변화 25
4-2-2. 잉크 Misting 변화 26
4-2-3. Ink film thickness에 따른 Density, Gloss 변화 26
4-3. 알키드 수지 함량에 따른 잉크의 유화특성 28

5. 결 론 29
Nomenclature 31
References 33

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