New UV-Curable Anticorrosion Coatings from Vegetable Oils

编号 020028805

推送时间 20210426

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 New UV-Curable Anticorrosion Coatings from Vegetable Oils

来源期刊 Macromolecular Materials and Engineering

期 第288期

发表时间 20210302

关键词 bi-based?resins;  cationic UV-curing;  coatings;  corrosion resistance; 

摘要 Bio-based?epoxy?resins?are attracting widespread interest in the field of polymer thermosets as environmentally friendly building block. In the present study, the feasibility of applying UV-curable epoxidized vegetable oils (EVOs) as anti-corrosion coating is investigated. Rheological characterization of EVOs is carried out, and their viscosity-shear relationship is evaluated. The cationic UV-curing of EVOs successfully gives rise to crosslinked materials with a wide range of thermo-mechanical properties, evaluated by differential scanning calorimetric analysis and dynamic thermal mechanical analysis. A high epoxy-group conversion, ranging from 93% to 99%, is always obtained. The?thermal stability?and surface properties of the bio-based coatings, such as, pencil hardness, adhesion, solvent resistance, and contact angle, are analyzed. Moreover, the corrosion protection effectiveness of the coatings is characterized by potentiodynamic polarization and electrochemical impedance spectroscopy measurements. In addition, field emission scanning electron microscopy is used to assess the samples morphology after corrosion tests.

服务人员 尚玮姣

服务院士 宋湛谦

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