| 摘要 |
<p>The invention relates to a method for manufacturing a hydrophobic glazing comprising the following consecutive steps: (a) formation of a layer of carbon rich silicon oxycarbide (SiOC) at the surface of a substrate made of mineral glass via chemical deposit in the vaporous phase (CVD) on at least one portion of the surface of said substrate whereby said surface is exposed to a flow of reactive gases containing ethylene (CH) silane (SiH) and carbon dioxide (CO) at a temperature between 600°C and 680°C the volume ratio of ethylene to silane (CH:SiH) during step (a) being lesser than or equal to 3.3 (b) formation of a layer of SiO on the layer of silicon oxycarbide deposited in step (a) or (b ) formation of a layer of silicon oxycarbide having low carbon content presenting an average C:Si ratio lower than 0.2 (c) annealing and/or shaping of the substrate resulting from step (b) or (b ) at a temperature between 580°C and 700°C (d) activation of the layer of silica formed in step (b) or activation of the layer of silicon oxycarbide formed in step (b ) via plasma treatment or acid or basic chemical treatment and (e) grafting via covalent bond of a fluorinated hydrophobe. The invention also relates to a hydrophobic glazing preferably a windscreen capable of being obtained by such a method.</p> |
