疏水涂层的制备及性能

涂层的疏水效果不仅取决于涂料自身表面自由能的大小,还与其表面粗糙度有密切的关系.通过向涂料中添加疏水助剂降低表面能,控制喷涂工艺提高涂层表面粗糙度,制备了巯水涂层.研究了疏水剂的种类、用量以及表面粗糙度对涂层疏水性能的影响.结果表明:当疏水剂的用量为5wt％,表面略微粗糙时,接触角达到139.,具有良好的疏水效果.

Preparation and Properties of Hydrophobic Coating

Hydrophobic effect of coating depends not only on its own surface energy, but also the surface rough
ness. The hydrophobic coating was prepared by adding hydrophobic additives to the coating to reduce the surface energy, and controlling spraying process to improve the surface roughness. The effects of types and amounts of hydrophobic additive and surface roughness to hydrophobic property of coating were studied. The results show that the contact angle can reach 139 with good hydrophobic effect when the amount of hydrophobic additive is 5%, and the coating has slightly rough surface.