无环和环脂肪二胺制备生物基环氧二胺涂料的比较

IF 2.3 4区 材料科学 Q2 Chemistry
Ilknur Babahan-Bircan, Jomin Thomas, Mark D. Soucek
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引用次数: 1

摘要

作为双酚a的替代品,研究了新的生物基活性环氧胺涂层。在前人的基础上,以甲基丙烯酸缩水甘油酯(GMA)和桐油为原料,通过Diels-Alder反应合成了生物基环氧功能化桐油(ETO)。在室温条件下,以当量摩尔比制备了新的eto -二胺固化体系。ETO用无环脂肪族胺(Jeffamine D400)和环脂肪族胺(Epicure 3300)在25 ~ 150℃四种温度下固化。然后比较了涂层的热性能和机械性能。通过红外光谱(IR)、热重分析(TGA)和凝胶含量测试对固化后的涂层进行了分析。TGA分析表明,环氧二胺聚合物的热稳定性可达170℃。通过摆硬度、铅笔硬度、十字口附着力、拉脱附着力、抗冲击性、抗反转性和耐化学性测试,考察了薄膜的力学性能。所有固化体系均表现出良好的铅笔硬度、交叉口附着力、抗冲击性和抗反向性能,而环氧化合物-无环二胺体系在150℃时表现出更高的摆硬度和显著的拉脱附着力。该研究表明,具有增强性能的桐油基环氧化物涂料具有更环保、更活泼的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Comparison of bio-based epoxide-diamine coatings prepared with acyclic and cyclic aliphatic diamines

Comparison of bio-based epoxide-diamine coatings prepared with acyclic and cyclic aliphatic diamines

As replacements for bisphenol-A, new bio-based and reactive epoxy-amine coatings have been investigated in this study. Bio-based precursor, epoxy-functionalized tung oil (ETO) was synthesized using glycidyl methacrylate (GMA) and tung oil via a Diels–Alder reaction according to our previous work. The new ETO-diamine-cured systems were prepared with the equivalent molar ratio at room temperature. ETO was cured with acyclic aliphatic (Jeffamine D400) and cyclic aliphatic (Epicure 3300) amines, at four temperatures ranging from 25 to 150°C. The coatings were then compared in terms of their thermal and mechanical properties. The cured coatings were analyzed by IR, thermogravimetric analysis (TGA), and gel content tests. TGA analysis showed that the epoxide-diamine polymers demonstrated thermal stability up to 170°C. The mechanical properties of the films were investigated by pendulum hardness, pencil hardness, cross-hatch adhesion, pull-off adhesion, impact resistance, reverse resistance, and chemical resistance testing. While all the cured systems exhibited good pencil hardness, cross-hatch adhesion, impact resistance, and reverse resistance properties, the epoxide-acyclic diamine system demonstrated greater pendulum hardness and notable pull-off adhesion at 150°C. The research demonstrates the potential for greener and more reactive tung oil-based epoxide coatings with enhanced properties.

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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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