The present subject matter relates to self-healing keyboards. In an example implementation, a self-healing keyboard of an electronic device comprises a self-healing film having a self-healing layer disposed over a keyboard. The self-healing layer is composed of polyurethane, epoxy vinyl ester, epoxy, polyurethane microcapsules filled with silane compound, and a polysiloxane mixture.

The present subject matter relates to self-healing keyboards. In an example implementation, a self-healing keyboard of an electronic device comprises a self-healing film having a self-healing layer disposed over a keyboard. The self-healing layer is composed of polyurethane, epoxy vinyl ester, epoxy, polyurethane microcapsules filled with silane compound, and a polysiloxane mixture.

A self-healing coating composition for use on metals includes a polyurea, an epoxy ester unsaturated resin, a combination of amine terminated siloxane and epoxy terminated siloxane and an organoclay. The polyurea is a water-soluble, aromatic polyurea and likewise, the epoxy ester is a water-soluble, aromatic epoxy ester. The coating composition is formed in a non-volatile solvent, such as N-Methylpyrrolidone. It can be applied to a metal surface and cured at room temperature to form a coating that is resistant to corrosion. Further the coating self-heals in a manner similar to a chromate coating.

A self-healing coating composition for use on metals includes a polyurea, an epoxy ester unsaturated resin, a combination of amine terminated siloxane and epoxy terminated siloxane and an organoclay. The polyurea is a water-soluble, aromatic polyurea and likewise, the epoxy ester is a water-soluble, aromatic epoxy ester. The coating composition is formed in a non-volatile solvent, such as N-Methylpyrrolidone. It can be applied to a metal surface and cured at room temperature to form a coating that is resistant to corrosion. Further the coating self-heals in a manner similar to a chromate coating.

A self-healing coating composition for use on metals includes a polyurea, an epoxy ester unsaturated resin, a combination of amine terminated siloxane and epoxy terminated siloxane and an organoclay. The polyurea is a water-soluble, aromatic polyurea and likewise, the epoxy ester is a water-soluble, aromatic epoxy ester. The coating composition is formed in a non-volatile solvent, such as N-Methylpyrrolidone. It can be applied to a metal surface and cured at room temperature to form a coating that is resistant to corrosion. Further the coating self-heals in a manner similar to a chromate coating.

The present invention discloses a fluorine-modified epoxy acrylic resin, an UV-curable varnish and a method for preparing the same, and a method for coating the varnish on a substrate. The fluorine-modified epoxy acrylic resin is prepared by a process including the following steps: generating an epoxy acrylic resin via a ring-opening esterification reaction between an unsaturated mono-carboxylic acid and at least one epoxy group in an epoxy resin; and generating an epoxy acrylic resin containing fluorinated side groups via an esterification reaction between a fluorocarboxylic acid or a fluorocarboxylic acid anhydride and at least one hydroxy group in the epoxy acrylic resin. The UV-curable varnish according to the invention is prepared based on the fluorine-modified epoxy acrylic resin. When the varnish is applied to the surface of a substrate, at least one performance of the material, thereby the service life of the material itself may be improved.

The present invention discloses a fluorine-modified epoxy acrylic resin, an UV-curable varnish and a method for preparing the same, and a method for coating the varnish on a substrate. The fluorine-modified epoxy acrylic resin is prepared by a process including the following steps: generating an epoxy acrylic resin via a ring-opening esterification reaction between an unsaturated mono-carboxylic acid and at least one epoxy group in an epoxy resin; and generating an epoxy acrylic resin containing fluorinated side groups via an esterification reaction between a fluorocarboxylic acid or a fluorocarboxylic acid anhydride and at least one hydroxy group in the epoxy acrylic resin. The UV-curable varnish according to the invention is prepared based on the fluorine-modified epoxy acrylic resin. When the varnish is applied to the surface of a substrate, at least one performance of the material, thereby the service life of the material itself may be improved.

An aqueous composition is provided comprising a resin, a curative, a filler, a surfactant, and water; wherein the resin comprises an average molecular weight of less than about 800 Daltons and comprises at least 50 weight percent of at least one of: (a) an unmodified epoxy or phenoxy resin, or (b) a surfactant-modified epoxy or phenoxy resin. This composition, applied to a substrate and dried, can then be cured so as to thermoset the resin and self-assemble to form continuous pathways of filler within the resin matrix.

An aqueous composition is provided comprising a resin, a curative, a filler, a surfactant, and water; wherein the resin comprises an average molecular weight of less than about 800 Daltons and comprises at least 50 weight percent of at least one of: (a) an unmodified epoxy or phenoxy resin, or (b) a surfactant-modified epoxy or phenoxy resin. This composition, applied to a substrate and dried, can then be cured so as to thermoset the resin and self-assemble to form continuous pathways of filler within the resin matrix.

The present invention relates to an insulating coating composition, a substrate coated with such insulating coating composition and a method for protecting a substrate by using the insulating coating composition. The insulating coating composition comprises at least a) chemically toughened epoxy resin component, wherein the ratio of chemically toughened segments, which are elastomeric segments and bonded via chemical reaction on the epoxy resin, is in a range of 20-49 wt %, based on the total weight of said chemically modified epoxy resin component; b) a curing agent; c) reinforcing fibers; and d) low-density fillers with a density ranging from 0.05-0.7 g/cm.sup.3, preferably 0.08-0.5 g/cm.sup.3, more preferably 0.1-0.4 g/cm.sup.3.