Bio-based episulfide composed of cardanol/cardol for anti-corrosion coating applications

Bio-based materials from Cardanol/cardol with episulfide group (CCES) and epoxy group (CCEO) were synthesized and further blended with commercial bisphenol-A diglycidyl ether type epoxy resin (DGEBA) for anti-corrosion coating application. The curing behavior of CCEO and CCES confirmed that episulfi...

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Bibliographic Details
Published inPolymer (Guilford) Vol. 121; pp. 286 - 296
Main Authors Lv, Jie, Liu, Zhuoyu, Zhang, Jie, Huo, Jizhen, Yu, Yingfeng
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 14.07.2017
Elsevier BV
Subjects
Adhesion tests
Biomedical materials
Bisphenol A
Cardanol
Cardol
Corrosion
Corrosion currents
Corrosion prevention
Corrosion resistance
Corrosion tests
Curing
Episulfide resin
Epoxy resin
Epoxy resins
Moisture content
Phenols
Protective coatings
Studies
Water absorption
Water content
Corrosion resistance
Cardanol
Epoxy resin
Episulfide resin
Cardol
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Summary:Bio-based materials from Cardanol/cardol with episulfide group (CCES) and epoxy group (CCEO) were synthesized and further blended with commercial bisphenol-A diglycidyl ether type epoxy resin (DGEBA) for anti-corrosion coating application. The curing behavior of CCEO and CCES confirmed that episulfide exhibited a faster curing rate and higher curing conversion than epoxide. Anticorrosion properties of composite system CCEO/CCES and DGEBA were also carried out. Equilibrium water content of CCES-DGEBA blend was much lower than neat DGEBA and CCEO-DGEBA composite system in water absorption test, which met agreement with that CCES-DGEBA blend system revealed better adhesive to the metal compared with DGEBA and CCEO-DGEBA blend in lap sheer strength assessment. Further, CCES-DGEBA blend with 20 wt% of CCES exhibited optimized performance in corrosion resistance as it possessed the higher impedance modulus at low frequencies in EIS bode plots, lowest corrosion current and the highest corrosion voltage in Tafel test. [Display omitted] •Bio-based episulfide of Cardanol/Cardol from cashew nut shell liquid improved the corrosion resistance of epoxy coatings.•Cardanol/cardol with episulfide group exhibited better performance than that with epoxy group when blended with DGEBA.•With the functional group increasing, cardanol/cardol with episulfide group enhanced the anti-corrosion property of DGEBA.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2017.06.036