This application relates to omniphobic materials which are physically and chemically modified at their surface to create hierarchically structured materials with both nanoscale and microscale structures that provide the omniphobic properties. Methods of making such omniphobic surfaces with hierarchical structures and uses thereof, including as flexible films that repel contaminants are also disclosed in the application.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

Provided is a method of producing a fluorosilicone rubber laminate. The method comprises: (1) applying a primer composition onto a substrate, and forming a primer layer on a surface of the substrate; and (2) bringing a fluorosilicone rubber composition into contact with the primer layer, and adhering a fluorosilicone rubber to the primer layer. The fluorosilicone rubber composition comprises a platinum-based catalyst and/or a fluorosiloxane containing a silicon atom-bonded hydrogen atom. The primer composition comprises a platinum-based catalyst or a fluorosiloxane containing a silicon atom-bonded hydrogen atom, however the primer composition does not simultaneously comprise a platinum-based catalyst and a fluorosiloxane containing a silicon atom-bonded hydrogen atom. Either the primer composition or the fluorosilicone rubber composition comprises a platinum-based catalyst or a fluorosiloxane containing a silicon atom-bonded hydrogen atom. A laminate in which a fluorosilicone rubber layer and a base material are favorably adhered to each other can be obtained.

Provided is a method of producing a fluorosilicone rubber laminate. The method comprises: (1) applying a primer composition onto a substrate, and forming a primer layer on a surface of the substrate; and (2) bringing a fluorosilicone rubber composition into contact with the primer layer, and adhering a fluorosilicone rubber to the primer layer. The fluorosilicone rubber composition comprises a platinum-based catalyst and/or a fluorosiloxane containing a silicon atom-bonded hydrogen atom. The primer composition comprises a platinum-based catalyst or a fluorosiloxane containing a silicon atom-bonded hydrogen atom, however the primer composition does not simultaneously comprise a platinum-based catalyst and a fluorosiloxane containing a silicon atom-bonded hydrogen atom. Either the primer composition or the fluorosilicone rubber composition comprises a platinum-based catalyst or a fluorosiloxane containing a silicon atom-bonded hydrogen atom. A laminate in which a fluorosilicone rubber layer and a base material are favorably adhered to each other can be obtained.

To provide a high emissivity coating composition capable of exhibiting a higher emissivity at a low elevated temperature and substantially reduced formation micro craze when coated upon a substrate, and enabling a simplified application process, a high emissivity coating composition, comprising a powder mixture for providing emissivity; a binder for providing adhesion; and a co-binder for promoting adhesion and film-forming, characterized in that the powder mixture comprises at least three metal compounds of formula A.sub.(y−3)B.sub.y/2O.sub.y, wherein y is 4; A is selectable from a group of Ni and Co; B is selectable from a group of Fe and Cr; and O is oxygen; and the co-binder is an aqueous solution comprising silica in a compound of Formula (1), wherein R.sub.1 is H—Si—(CH.sub.3).sub.2; and a compound of Formula (2), wherein R.sub.2 is CH.sub.3, is disclosed herein.

Methods for hydrophobizing bowstrings are described herein. In one aspect, the method can include applying a silicone-based hydrophobic coating to the bowstring; and curing the bowstring for a predefined period of time.

Provided is a low dielectric constant film and a preparation method thereof, where epoxy alkanes, organosilicon compounds and fluorine-containing siloxane compounds are used as raw materials of the low dielectric constant film, and the low dielectric constant film is formed on a substrate surface by a plasma-enhanced chemical deposition method. Accordingly, a nanofilm with a low dielectric constant and excellent hydrophobicity is formed on the substrate surface.

Methods for forming a coated digitally manufactured part include forming an article by a digital manufacturing method; coating a surface of the article with a reactive silicon-containing precursor polymer; and treating the polymer to form a silica-containing coating, thereby forming the coated digitally manufactured part. An article includes a digitally manufactured part having surface striations; and a coating encapsulating the digitally manufactured part and comprising silica. An article includes a digitally manufactured part (i) formed by selective lase sintering, (ii) comprising a surface defined by coalesced particles, and (iii) having a surface roughness R.sub.a of at least 0.1 microns; and a coating encapsulating the part and comprising silica. A composition comprising polysilazane is described.

The present invention provides a method and kit for the treatment of surfaces, such as the skin surface of a user, to impart hydrophobic characteristics upon the surface. The treatment of surfaces to impart hydrophobicity protects equipment, personnel, and animals from the effects of aqueous solutions such as water, toxic slurries, concrete, acids and bases.