植物油의 再에스터化와 樹脂分子量에 依한 平版잉크의 特性
- Abstract
- According as gradually increasing the demand for eco-friendly at the printing process, fair development has been progressed. Especially, the inks are used by soy oil from the beginning of ink industry for preventing environment, it is possible to make eco-friendly inks with vegetable ester. So it is not necessary to use petroleum-based solvents at all for preventing environment. These eco-friendly inks have a benefits that reduce the VOC(Volatile Organic Compound) and they are able to use the renewable resource. But basically vegetable oils have high viscosity, high solubility properties. So if the vegetable oils use in the ink, set off problem occur on the paper because of slow drying time. In case of vegetable ester, it has the similar molecular weight and kinematic viscosity with hydrocarbon solvent, it is able to control the power of dilution of the resin. So, it has the benefit that solves the problem of the existing eco-friendly inks.
Thus, in this paper, the variation of offset ink properties was studied according to the reesterification of vegetable oil and resin molecular weight. Different types of esters were made by six types of vegetable oils and used the esters in the varnishes and inks the properties are compared with hydrocarbon solvent based ink. And the property variation of the varnish and inks was examined according to using the rosin modified phenolic resin and soy oil methyl esters. Finally, the property variation of the varnish and inks was investigated according to vegetable ester, after was yielded vegetable ester using the vegetable fatty acid and ethanol, butanol.
The results are as follows.
1. As iodine value of vegetable oil is lower, the decrement of acid value and color-number appeared largely after reesterification and molecular weight and kinematic viscosity increase as moved from FAEE, FABE to FAME. In case of cloud point, it is hard to find a big difference between vegetable esters, but it is considerably low by comparing with the hydrocarbon solvent.
2. Viscosity and yield value of varnish and ink are considerably low by a high-solubility of vegetable esters in comparison with tack, the more increasing of saturated fatty acid content the more pour point is increased then it has resulted in increasing of the viscosity value. The more molecular weight of resin is increased, the more increased the tack and viscosity, as it's moved from FAME to FAEE, FABE at the same time, dilution capacity will be weak by the resin so verify the increasing of the tack and viscosity.
3. Emulsification of varnish and ink which is used vegetable esters is good in comparison with a hydrocarbon Solvent, it is also good as move to high solubility and dilution with vegetable esters, in case of resin, the more it has a good dilution, the more good emulsification.
4. Depending on fatty acid composition of vegetable ester, shear stress and viscosity profile curve of a varnish and ink have a difference, it is also increased in case that molecular weight of resin is higher and solubility is lower, if solubility and dilution power of diluent solvents is lower it become increase. It has same tendency viscous modulus and elastic modulus by a frequency.
5. In the research of printability by IGT, as solubility and molecular weight of resin is high, density, gloss and ink mileage is good. In case of diluent solvents, as the solubility is high, it is good, on the other hand, as the dilution power is low between vegetable esters, it is good.
6. As kinematic viscosity of diluent solvents and solubility of resin are low, the setting time is fast, and in case of a rub resistance, as molecular weight and content of a resin is high, the rub resistance is good.
- Issued Date
- 2012
- Awarded Date
- 2012. 2
- Type
- Dissertation
- Publisher
- 부경대학교 대학원
- Department
- 대학원 인쇄공학과
- Advisor
- 김성빈
- Table Of Contents
- List of Tables ⅷ
Abstract ⅸ
제1장 서 론 1
제2장 관계 이론 5
2-1. 식물유 에스터(Vegetable oil ester) 5
2-1-1. 식물유 에스터의 반응 6
2-1-2. 전이에스터화 반응에 영향을 미치는 인자 7
2-1-3. 식물유 에스터의 제조공정 9
2-2. 로진변성페놀수지 14
2-3. 수지의 분자량 17
2-3-1. 고분자의 분자량 및 분자량 분포 17
2-3-2. 겔 침투 크로마토그래피 18
2-4. 인쇄잉크의 레올로지 22
2-4-1. Newtonian거동과 Non-newtonian거동 22
2-4-2. 점탄성체(Viscoelastic material) 24
제3장 실 험 27
3-1. 시료합성 및 제조 27
3-1-1. 식물유 27
3-1-2. 식물유 에스터의 제조 27
3-1-3. 대두유 지방산 에스터 29
3-1-4. 수지합성과 분자량측정 29
3-1-5. 바니스 제조 29
3-1-5-1. 식물유 에스터에 따른 바니스 제조 29
3-1-5-2. 메틸 에스터와 수지분자량에 따른 바니스 제조 30
3-1-5-3. 대두유 지방산 에스터에 따른 바니스 제조 31
3-1-6. 잉크 제조 31
3-2. 시료의 물성분석 32
3-2-1. 식물유 에스터의 물성분석 32
3-2-2. 로진변성페놀수지의 물성분석 33
3-2-3. 대두유 지방산 에스터의 물성분석 33
3-3. 바니스의 물성분석 33
3-3-1. 택(Tack), 점도, 항복가 33
3-3-2. 유화적성 33
3-3-3. 레올로지 특성 34
3-4. 잉크의 물성 및 인쇄적성 35
3-4-1. 택, Flow, 점도, 항복가 35
3-4-2. 유화적성 35
3-4-3. 레올로지 특성 35
3-4-4. 잉크의 인쇄적성 35
3-4-4-1. IFT(Ink Film Thickness)에 따른 농도, 광택 변화 35
3-4-4-2. 시간에 따른 광택 변화 35
3-4-4-3. 농도, 광택, Setting time, Drying time, 내마찰성(Rub resistance) 36
제4장 결과 및 고찰 37
4-1. 식물유 에스터에 따른 잉크의 물성변화 37
4-1-1. 식물유에 따른 에스터의 물성변화 37
4-1-2. 식물유 에스터에 따른 바니스의 물성변화 40
4-1-2-1. 바니스의 택, 점도, 항복가 40
4-1-2-2. 바니스의 유화적성 40
4-1-2-3. 바니스의 레올로지 특성 42
4-1-3. 식물유 에스터에 따른 잉크의 물성변화 49
4-1-3-1. 잉크의 택, 점도, 항복가 49
4-1-3-2. 잉크의 유화적성 49
4-1-3-3. 잉크의 레올로지 특성 51
4-1-4. 식물유 에스터에 따른 잉크의 인쇄적성 변화 58
4-1-4-1. IFT에 따른 농도, 광택 변화 58
4-1-4-2. 시간에 따른 광택 변화 58
4-1-4-3. Setting time, Drying time, 내마찰성 62
4-2. 대두유의 메틸에스터와 수지분자량에 따른 잉크의 물성변화 63
4-2-1. 로진변성페놀수지의 물성측정 63
4-2-2. 로진변성페놀수지에 따른 바니스의 물성변화 65
4-2-2-1. 바니스의 택, 점도 65
4-2-2-2. 바니스의 유화적성 65
4-2-2-3. 바니스의 레올로지 특성 67
4-2-3. 로진변성페놀수지에 따른 잉크의 물성변화 74
4-2-3-1. 잉크의 택, 점도, 항복가 74
4-2-3-2. 잉크의 유화적성 74
4-2-3-3. 잉크의 레올로지 특성 76
4-2-4. 로진변성페놀수지에 따른 잉크의 인쇄적성 변화 83
4-2-4-1. IFT에 따른 농도, 광택 변화 83
4-2-4-2. 농도, 광택, Setting time, 내마찰성 83
4-3. 대두유 지방산 에스터에 따른 잉크의 물성변화 86
4-3-1. 대두유 지방산 에스터의 물성측정 86
4-3-2. 대두유 지방산 에스터에 따른 바니스의 물성변화 89
4-3-2-1. 바니스의 택, 점도 89
4-3-2-2. 바니스의 유화적성 89
4-3-2-3. 바니스의 레올로지 특성 91
4-3-3. 대두유 지방산 에스터에 따른 잉크의 물성변화 98
4-3-3-1. 잉크의 택, Flow, 점도 98
4-3-3-2. 잉크의 유화적성 98
4-3-3-3. 잉크의 레올로지 특성 100
4-3-4. 대두유 지방산 에스터에 따른 잉크의 인쇄적성변화 107
4-3-4-1. IFT에 따른 농도, 광택 변화 107
4-3-4-2. 농도, 광택, Setting time, 내마찰성 107
제5장 결 론 111
References 113
- Degree
- Doctor
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