无溶剂漆酚糠醛环氧带锈涂料的制备及性能研究
Preparation and properties study of solvent-free urushiol-furfural epoxy rusty coatings
A kind of solvent-free rusty coatings,which can be applied on the steel containing a small amount of rust layer,is prepared through using urushiol-furfural modified epoxy resin as main film forming material,taking a new-type gallate as rust transfer agent,and adding suitable fillers and additives.The action effects between the coating and the rust layer,as well as the anticorrosive properties of the coatings are characterized by means of mechanical property testing,infrared spectroscopy (FT-IR),scanning electron microscopy (SEM),X-ray powder diffraction (XRD),X-ray photoelectron spectroscopy (XPS) and electrochemical impedance.The results show that the coating can effectively act with rust,the coating adhesion is 1 level,the impact resistance is 50 cm,the flexibility is 1 mm,the hardness is 3 H,the impedance modulus is 4×109 Ω·cm2,the coating surface is flat and the structure is tight,which can effectively prevent rust.The coating film shows excellent film forming performance,and has good environmental protection and anti-corrosion effect.
rusty coatings / gallic acid / epoxy resin / urushiol / solvent-free
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