Substrate coated with super-hydrophobic layers
AssigneeMichael Ebert
InventorFranklin G. Reick
Life of this patent
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Abstract
The technique for forming on a substrate an abrasion-resistant layer having super-hydrophobic properties. Applied to the face of the substrate which has an inherently hydrophobic micro-pile formation are hydrophobic fumed silicon dioxide particles dispersed in a hydrophobic solvent. Dissolved in the solvent is a resinous binder in a small but effective amount which, by weight, is substantially less than one half the amount of the particles in the dispersion. Upon volatilization of the solvent, the resultant layer is composed primarily of fumed silicon dioxide particles strongly bonded to the face of the substrate.
Claims13
A product having super-hydrophobic properties, comprising a substrate having a micro-rough face which is physically hydrophobic, said face being coated with hydrophobic fumed silicon dioxide particles which are bonded to said face by a binder having chemical hydrophobic properties, the amount of said binder, by weight relative to the amount of said particles being less than one-half the amount of said particles.
The method of fabricating a product having a super-hydrophobic surface comprising the steps of dissolving in a solvent a binder having chemical hydrophobic properties, dispersing in the solvent particles of fumed hydrophobic silicon dioxide to form a flowable coating material, and applying said material to the face of a substrate having a micro-rough surface which is physically hydrophobic, whereby when the solvent is volatilized, the resultant dry coating imparts super-hydrophobic properties to the substrate, the amount of said binder, by weight, relative to the amount of said particles being less than one-half the amount of said particles.
Dependencies are inferred from the claim text.