Development of a Transparent and Ultrahydrophobic Glass Plate

Abstract

A transparent glass plate was roughened at the submicron level, and then a chemically adsorbed monolayer of a fluorocarbon compound was formed along the glass surface. The monolayer was prepared using the chemical coupling reaction accompanying dehydrochlorination between a chlorosilyl group of the heptadeca-fluorodecyltrichlorosilane (CF3(CF2)7(CH2)2SiCl3: HFTS) surface-active agent and a hydroxyl group on the glass surface. The contact angle of the glass surface relative to water was approximately 155 degrees with transmittance kept at 92%. This glass plate may be useful for various products, such as motor vehicles and building window glass.

Design of a Transparent Hydrophobic Coating

“…61) Low surface energy is produced using coating, mixing, or polymerizing lowsurfaceenergy materials such as fluoro alkylsilane (heptadecafluorodecyltrichlorosilane, 30) perfluo rooctyltrichlorosilane 45) , heptadecafluorodecyltrimethoxysi lane, 20 48) . Figure 2 shows that Young, Wenzel and Cassie's equations consider only the surface energy balance in the direction of the Xaxis.…”

“…In 1993, Ogawa et al prepared a transparent superhydrophobic surface on glass plates using RF plasma etching and subsequent coating with heptadecafluorodecyltrichlorosilane. 30) By controlling the gas pressure and substrate temperature, Hozumi et al obtained transparent superhydrophobic films by CVD us Thereby, they controlled the surface roughness precisely by varying the immersion condition. Consequently, they produced a transparent superhydrophobic film by coating the boehmite with heptadecafluorodecyltrimethoxysilane.…”

Electronic Structures and Optical Properties of(GaP)n(AlP)nShort-Period Superlattices withn=1to 6

“…In addition, the surface with a CA above 150 is called the super-hydrophobic surface, and such a surface is attracting considerable attention at present, [76][77][78][79][80][81][82][83][84] because the limited contact area between the solid surface and the water could change chemical reactions and/or bond formation through water, introducing novel properties on the surface. Therefore, if one succeeds in the preparation of the TiO 2 surface with a CA of more than 150 , it indicates that the surface property of TiO 2 can be markedly controlled.…”

Enhancement of contact line mobility by means of infrared laser illumination. II. Numerical simulations

“…Ogawa et al and many others rendered substrates superhydrophobic. [10][11][12][13] Similar to lotus leaves, the liquid-solid interfacial area is substantially reduced, thereby only few degrees of inclination are sufficient to make a droplet slide. 10 A prominent application is self-cleaning surface coatings.…”

“…[10][11][12][13] Similar to lotus leaves, the liquid-solid interfacial area is substantially reduced, thereby only few degrees of inclination are sufficient to make a droplet slide. 10 A prominent application is self-cleaning surface coatings. 12 Smith et al impregnated topologically patterned surfaces with lubricant oils in order to enhance the droplet mobility.…”