Wettability is a very important property governed by both the chemical composition and the geometrical structure of solid surfaces. Super-hydrophobic surface[with water contact angle(CA) larger than 150°] have be...Wettability is a very important property governed by both the chemical composition and the geometrical structure of solid surfaces. Super-hydrophobic surface[with water contact angle(CA) larger than 150°] have been extensively investigated due to their importance for industrial applications. In the present study, we describe a rather simple method for synthesizing separated alignments of polymer nanopole films, which has super-hydrophobic property with water a contact angle as high as 152.0°. Nanostructures that induce the large fraction of air on the surface cause this unique property.展开更多
Ambient curable hydrophobic coatings received considerable attention during the past decade.In this study,a series of fluoropolymers with hydroxylic groups and an acid anhydride content polymer were synthesized by sol...Ambient curable hydrophobic coatings received considerable attention during the past decade.In this study,a series of fluoropolymers with hydroxylic groups and an acid anhydride content polymer were synthesized by solution copolymerization under refluxing toluene.Their structures were characterized by FT-IR and DSC.In the presence of triethylamine,these two kinds of polymers were crosslinked with each other under ambient condition to form a coating with crosslinking degree up to 77%.With increasing the content of fluoromonomer in the feeding composition,the corresponding cured coating showed higher hardness and higher contact angle for water connected with other good properties in all instances.The contact angles were dependent to some extend on the structure of the fluoromonomers used and the hydrophobicity of the substrates.The present hydrophobic coating was further applied to copper surface.Compared with the uncoated one,the coated copper showed an improved performance for preventing the formation of frost on its surface.展开更多
文摘Wettability is a very important property governed by both the chemical composition and the geometrical structure of solid surfaces. Super-hydrophobic surface[with water contact angle(CA) larger than 150°] have been extensively investigated due to their importance for industrial applications. In the present study, we describe a rather simple method for synthesizing separated alignments of polymer nanopole films, which has super-hydrophobic property with water a contact angle as high as 152.0°. Nanostructures that induce the large fraction of air on the surface cause this unique property.
文摘Ambient curable hydrophobic coatings received considerable attention during the past decade.In this study,a series of fluoropolymers with hydroxylic groups and an acid anhydride content polymer were synthesized by solution copolymerization under refluxing toluene.Their structures were characterized by FT-IR and DSC.In the presence of triethylamine,these two kinds of polymers were crosslinked with each other under ambient condition to form a coating with crosslinking degree up to 77%.With increasing the content of fluoromonomer in the feeding composition,the corresponding cured coating showed higher hardness and higher contact angle for water connected with other good properties in all instances.The contact angles were dependent to some extend on the structure of the fluoromonomers used and the hydrophobicity of the substrates.The present hydrophobic coating was further applied to copper surface.Compared with the uncoated one,the coated copper showed an improved performance for preventing the formation of frost on its surface.
