目的 针对传统重氮感光胶存在的交联密度低及耐水性差的问题,本文以聚醋酸乙烯酯（PVAc）乳液为基体,通过引入多官能团交联单体季戊四醇四丙烯酸酯（PET4A）,探究交联单体季戊四醇四丙烯酸酯（PET4A）的改性作用,制备出高性能的感光胶用聚醋酸乙烯酯（PVAc）乳液。方法 采用种子乳液聚的方式,制备一种含反应性微凝胶结构的PVAc乳液,通过PET4A的多官能团交联特性,在乳液内部形成微凝胶网络结构。对乳液及感光胶进行各项测试与性能进行分析感光胶的耐水耐溶剂能力。结果 当PET4A添加量为单体的7.5%和10%能明显改善感光胶的耐水和耐溶剂性能。结论 由耐刮性等测试结果可知,本文制备的感光胶用PVAc乳液通过增加交联的方式提高了感光胶的耐水性和耐溶剂性能,印刷网板在不添加坚膜液的情况下,其有效耐刮次数超过2 000次。
Abstract
The work aims to introduce the multifunctional cross-linking monomer, pentaerythritol tetraacrylate (PET4A), investigate the modifying effect of the cross-linking monomer, pentaerythritol tetraacrylate (PET4A) and prepare a high-performance poly (vinyl acetate) (PVAc) emulsion for photosensitive adhesive with poly (vinyl acetate) (PVAc) emulsion as a substrate, so as to address the poor cross-linking density and water resistance of traditional diazo photosensitive adhesive. A PVAc emulsion containing reactive microgel structure was prepared by seed emulsion polymerization, which formed a micro gel network structure in the emulsion through the multifunctional crosslinking characteristics of PET4A. Through various tests and performance analysis of the emulsion and the photosensitive adhesive, the water resistance and solvent resistance of the photosensitive adhesive were analyzed. The results showed that when the addition amount of PET4A was 7.5% and 10% of the monomer, it could significantly improve the water resistance and solvent resistance of the photosensitive adhesive. In conclusion, based on the test results such as scratch resistance, it can be known that the PVAc emulsion for photosensitive adhesive prepared in this paper improves the water resistance and solvent resistance of the photosensitive adhesive by increasing crosslinking. Without adding hardening film solution, the effective scratch resistance of the printed screen exceeds 2 000 times.
关键词
PVAc /
感光胶 /
反应性微凝胶 /
耐水耐溶剂
Key words
PVAc /
photosensitive adhesive /
reactive micro gel /
water resistance and solvent resistance
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 张然, 刘杰, 杨建军, 等. 重氮树脂感光胶国内外研究进展[J]. 网印工业, 2007(4): 37-40.
ZHANG R, LIU J, YANG J J, et al.Research Progress of Diazo Resin Photosensitive Adhesive at Home and Abroad[J]. Screen Printing Industry, 2007(4): 37-40.
[2] YU D Y, ZHONG J C, WU F, et al.Preparation and Properties of PC/PCTG Blends with Excellent Optical Properties and Solvent Resistance[J]. Polymer International, 2024, 73(6): 478-483.
[3] XU W J, DENG L, TANG L Y, et al.Preparation of Silicon Modified HEUR Thickener with Good Rheological and Solvent Resistance Properties[J]. Progress in Organic Coatings, 2022, 164: 106725.
[4] 陈洁, 裴克梅. 耐溶剂乳液型丙烯酸酯压敏胶的制备与性能研究[J]. 中国胶粘剂, 2023, 32(5): 29-33.
CHEN J, PEI K M.Preparation and Properties of Solvent-Resistance Emulsion-Type Acrylate Pressure Sensitive Adhesive[J]. China Adhesives, 2023, 32(5): 29-33.
[5] DSOUZA R F, PARTHIBAN A.Water-Based UV Curable Hybrid Urethane-Acrylates Formed by Acid-Base Interaction between Tertiary Amine Containing Polyurethane and Acrylic Acid for Photocoating and Ink Applications[J]. Journal of Applied Polymer Science, 2024, 141(14): e55193.
[6] TAO X L, YI W T, XU X Q, et al.Recyclable Polyurea-Urethane Thermosets with De-Crosslinking Capability in Acetic Acid[J]. Chinese Journal of Polymer Science, 2023, 41(6): 859-865.
[7] XU Z, LIU G H, CAO K, et al.Solvent-Resistant Self-Crosslinked Poly(ether imide)[J]. Macromolecules, 2021, 54(7): 3405-3412.
[8] MENG Y Y, YONG Q W, LIAO B, et al.Synthesis, Characterization and Formation Mechanism of Acrylate Emulsion-Based Self-Matting Coatings[J]. New Journal of Chemistry, 2020, 44(33): 13971-13978.
[9] ZHU T T, XIE F F, HUANG T, et al.Preparation of Microporous Organic Polymers via UV-Initiated Radical Copolymerization[J]. ACS Macro Letters, 2018, 7(11): 1283-1288.
[10] QIU X L, LI W, SONG G L, et al.Fabrication and Characterization of Microencapsulated N-Octadecane with Different Crosslinked Methylmethacrylate-Based Polymer Shells[J]. Solar Energy Materials and Solar Cells, 2012, 98: 283-293.
[11] 张静, 涂伟萍, 杜敏. 丙烯酸酯类反应性微凝胶的制备及结构性能[J]. 高分子材料科学与工程, 2010
26(7): 35-38.
12 ZHANG J, TU W P, DU M.Synthesis, Structure and Properties of Reactive Acrylate[J]. Polymer Materials Science & Engineering, 2010, 26(7): 35-38.
[12] 赵爱华, 张新荔. 反应性微凝胶的制备及其在涂料中的应用[J]. 上海涂料, 2009, 47(7): 29-31.
ZHAO A H, ZHANG X L.Preparation of Reactive Micro-Gel and Its Application in Coatings[J]. Shanghai Coatings, 2009, 47(7): 29-31.
[13] GAU E, MATE D M, ZOU Z, et al.Sortase-Mediated Surface Functionalization of Stimuli-Responsive Microgels[J]. Biomacromolecules, 2017, 18(9): 2789-2798.
[14] LI X Y, WANG Z, JING X, et al.Construction and Effect of Intramolecular Hydrogen Bond on Solvent Resistance of Polymeric Membranes and Their Application in Impermeable Membranes[J]. Journal of Industrial and Engineering Chemistry, 2022, 107: 302-312.
[15] 陈亮, 陈任, 卢杰宏, 等. 丙烯酸酯改性聚醋酸乙烯酯(PVAc)乳液的制备及其感光胶应用性能研究[J]. 涂料工业, 2024, 54(2): 37-44.
CHEN L, CHEN R, LU J H, et al.Preparation of Acrylates Modified PVAc Emulsion and Its Application Property of Photosensitive Adhesive[J]. Paint & Coatings Industry, 2024, 54(2): 37-44.
[16] 向科炜, 段棋月, 许丝琪, 等. 快干羟基丙烯酸酯乳液的合成及性能研究[J]. 涂料工业, 2020, 50(2): 32-37.
XIANG K W, DUAN Q Y, XU S Q, et al.Synthesis and Investigation of Fast Drying Hydroxyl Containing Acrylate Latex[J]. Paint & Coatings Industry, 2020, 50(2): 32-37.
[17] SAWANT S B, MESTRY S U, MOHANTY J D, et al.Polyvinyl Acetate and Polyurethane-Vinyl Acetate Hybrid Emulsion: Synthesis, Characterization and Properties[J]. Iranian Polymer Journal, 2023, 32(11): 1421-1432.
[18] MAN L M, FENG Y C, HU Y, et al.A Renewable and Multifunctional Eco-Friendly Coating from Novel Tung Oil-Based Cationic Waterborne Polyurethane Dispersions[J]. Journal of Cleaner Production, 2019, 241: 118341.
[19] 杨虎祥. 网版印刷的环保处理工艺[J]. 丝网印刷, 2021, 39(2): 26-32.
YANG H X.Environmental Protection Process in Screen Printing[J]. Screen Printing, 2021, 39(2): 26-32.
基金
广东省自然科学基金重点项目（2020B1515120099）; 韶关市科技计划项目（873003）; 清远市科技计划项目（2024BQW017）; 国家级大学生创新创业训练计划项目（202510564006S,202310564081S）
PDF(1082 KB)
渝公网安备 50010702501716号 渝ICP备15012534号-2
