用秘鲁油对固体环氧树脂进行微波改性

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-04-25 DOI:10.1016/j.porgcoat.2025.109333

Daniel Obregón , Antonella Hadzich , Lunjakorn Amornkitbamrung , G. Alexander Groß , Santiago Flores

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引用次数: 0

摘要

用干燥植物油对固体环氧树脂进行微波加热改性，制得单组分环氧酯树脂。由于不饱和脂肪酸链的自氧化能力，这些杂化生物基树脂具有在室温下固化的环氧树脂网络。采用响应面设计评价了脂肪酸来源、温度和反应时间对粘度的影响。研究了所选树脂的结构（傅里叶变换红外（FTIR）光谱和质子核磁共振（1H NMR））、干燥行为、热稳定性（热重/差热分析（TG/DTG））和分子量分布（凝胶渗透色谱（GPC））。通过电化学阻抗和盐雾试验，比较了不同脂肪酸源对环氧酯树脂涂料防腐性能的影响。实验设计简化了合成条件的选择，以获得最佳的树脂膜性能。用秘鲁油制备的微波合成环氧酯树脂具有良好的耐腐蚀性，是开发功能性防腐涂料的潜在原料。它的高不饱和含量赋予了茶树油在涂料工业中取代亚麻籽油所需的固化性能。

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Microwave-assisted modification of a solid epoxy resin with a Peruvian oil

A solid epoxy resin was modified with drying vegetable oils via microwave heating to produce one-component epoxy ester resins. These hybrid bio-based resins have an epoxy network that cures at room temperature due to the auto-oxidative capacity of unsaturated fatty acid chains. The influence of the fatty acid source, temperature, and reaction time on viscosity was evaluated using a response surface design. Structure (Fourier transform infrared (FTIR) spectroscopy and proton nuclear magnetic resonance (¹H NMR)), drying behavior, thermal stability (thermogravimetry/ differential thermal analysis (TG/DTG)), and molecular weight distribution (gel permeation chromatography (GPC)) of selected resins were also studied. Paints prepared with representative epoxy ester resins were analyzed to compare the effect of the fatty acid source on anticorrosive properties by electrochemical impedance and salt spray tests. The design of experiments simplified the selection of synthesis conditions to obtain optimal resin film properties. Microwaved-synthesized epoxy ester resins prepared with Peruvian oil are potential raw materials for developing functional anticorrosive paints, as they provide the best corrosion resistance. Its high unsaturation content gives sacha inchi oil the curing properties needed to replace linseed oil in the coatings industry.

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.