| 초록 |
Organic-inorganic hybrid coating materials having both anti-corrosion and wear resistance were prepared by sol-gel process. Sol-gel precursor containing anti-corrosion properties were synthesized by sequential Michael addition of methylaminoethanol to 1,4-benzoquinone, followed by the reaction with 3-isocyanatopropyltriethoxysilane. Epoxy was modified by 3-isocyanatopropyltriethoxysilane and the completion of the reaction was confirmed by the disappearance of NCO group in FT-IR. Sol-gel precursors, modified epoxy, HCl, H2O, and diaminodiphenylmethane in tetrahydrofuran were stirred at room temperature for 1h and the solvent was removed under the reduced pressure. The resulting mixture was coated on iron substrates by spin-coating and heated to 80℃ for 12h and 160℃ 12h. The coatings on substrates were clean and transparent and showed very high pencil hardness up to 6H. The anti-corrosion properties of hybrid coatings by salt spray chamber test will be further discussed. |
