| 摘要 |
PURPOSE: A coating solution is provided to able to form a protection film having excellent adhesion and corrosion resistance by only one coating using existing coating technology without using environment-harmful material. CONSTITUTION: A coating solution of magnesium material comprises a silica precursor mixture consisting of tetraethoxysilane, methyltriethoxysilane, glycidyloxypropyltrimethoxysilane. A manufacturing method of the coating solution comprises a step(S10) of preparing a mixed solution by mixing 5-20 M of ethanol, 5-20 M of water, 0.01-0.1 M of nitric acid and stirring the mixture; a step(S20) of preparing a silica precursor mixture by mixing 0.1-1 M of tetraethoxysilane, 0.2-2.2 M of methyltriethoxysilane, and 0.1-1 M of glycidyloxypropyltrimethoxysilane; a step(S30) of mixing the silica precursor mixture and the silica nanoparticle colloid to the mixed solution, and a step of stirring the mixture. [Reference numerals] (S10) Preparing a mixed solution by mixing ethanol; (S20) Generating a silica precursor mixture by mixing TEOS, MTES and GPTMS; (S30) Mixing the silica precursor mixture and silica colloid |
