Manufacturing method of water-repellent coating composition based on non-fluoride and manufacturing method of water-repellent coating film using the coating composition

摘要

The present invention, a step of mixing tetraethyl orthosilicate (tetraethyl orthosilicate) and a non-fluorine-based silane in a solvent, and the tetraethyl orthosilicate and the non-fluorine-based silane mixed solvent in water (H ₂ O) and acid ( acid (dripping) and condensation reaction and aging the result of the condensation reaction to obtain a transparent solution, wherein the non-fluorine-based silane is decyl trimethoxysilane (decyl trimethoxysilane), glycylic Preparation of a water-repellent coating solution comprising at least one material selected from the group consisting of doxypropyl trimethoxysilane, phenyl trimethoxysilane and methyl trimethoxysilane Method and method for manufacturing a water-repellent coating film using the same. According to the present invention, a water-repellent coating liquid that does not contain fluorine, which is an environmentally harmful substance, and is eco-friendly and exhibits excellent visible light transmittance, contact angle with water, and pencil hardness can be manufactured through a solution process.