Research Progress on Hydrophobic Modification of Polyurethane Coatings
Polymer coatings are of particular importance in corrosion and fouling protection of metal-lic materials in transport and infrastructure industries due to their advantages of low cost,easy prepara-tion,convenient operation and rich variety.Among various polymer coatings,polyurethane(PU)coatings are widely used as surface protection materials for metallic facility because of their excellent mechanical property and strong resistance to abrasion,heat and corrosion.However,the presence of hydrophilic components in the formulation of PU coatings leads to a decrease in hydrophobicity,which seriously re-stricts their industrial application in humid environment.Therefore,many efforts have been made to devel-op new modification strategies for PU coatings in order to obtain stable hydrophobic coatings.The review aims to provide insight into the recent advances in hydrophobic PU coatings,and methods that have used to modify and design hydrophobic PU coatings are summarized.Also,the challenges and outlook of hydrophobic PU coatings are discussed.