Abstract: A surface treatment method for substrate includes: spraying liquid is provided, the spraying liquid includes silane coupling agent, leveling agent, isopropyl alcohol, ethanol, acetic acid and water; a substrate having a metallic coating disposed thereon is provided; the spraying liquid is sprayed on the metallic coating, and then spraying liquid is baked to form a transparent protecting layer on the metallic coating; and a painting layer is formed on the protecting layer. The housing formed by the surface treatment method is also provided.

Abstract: A housing includes a substrate made of aluminum or aluminum alloy, an anodic oxide film disposed on the substrate, and an abrasion resisting layer disposed on the anodic oxide film. The abrasion resisting layer is an alkylate silicon dioxide layer containing nano aluminum oxide powder. An electronic device using the housing is also described.

Abstract: A ceramic-and-plastic composite includes a ceramic article, a nano-silicon containing coating bonded on a surface of the ceramic article, a glue layer bonded with the nano-silicon containing coating, and at least a plastic article bonded to the glue layer. The nano-silicon containing coating partially permeates into the ceramic article. An electronic device using the ceramic-and-plastic composite is also described.

Abstract: A device for applying a magnetic field to a container comprises an adjustable magnetic field generator. The adjustable magnetic field generator is adjacent to the container and has a magnet having one magnetic pole adjacent a wall of the container and another magnetic pole away from the wall of the container. The adjustable magnetic field generator comprises a magnet. The intensity of magnetic field applied to the container gradually decreases from the container wall adjacent the magnetic pole of the magnet to the opposite container wall. Method for coloring anode coatings using the coloring device is also provided.

Abstract: A paint composition contains polyurethane paint and nano silicon dioxide. The weight percentage of the nano silicon dioxide in the paint composition is about 2% to about 10%. The surface of the nano silicon dioxide chemically bonds with a silane coupling agent having amino function groups or an aluminate coupling agent having amino function groups.

Abstract: A housing includes a substrate made of aluminum or aluminum alloy, an anodic oxide film disposed on the substrate, and an abrasion resisting layer disposed on the anodic oxide film. The abrasion resisting layer is an alkylate silicon dioxide layer containing nano aluminum oxide powder. An electronic device using the housing is also described.

Abstract: A ceramic-and-plastic composite includes a ceramic article, a nano-silicon containing coating bonded on a surface of the ceramic article, a glue layer bonded with the nano-silicon containing coating, and at least a plastic article bonded to the glue layer. The nano-silicon containing coating partially permeates into the ceramic article. An electronic device using the ceramic-and-plastic composite is also described.

Abstract: A device for applying a magnetic field to a container comprises an adjustable magnetic field generator. The adjustable magnetic field generator is adjacent to the container and has a magnet having one magnetic pole adjacent a wall of the container and another magnetic pole away from the wall of the container. The adjustable magnetic field generator comprises a magnet. The intensity of magnetic field applied to the container gradually decreases from the container wall adjacent the magnetic pole of the magnet to the opposite container wall. Method for coloring anode coatings using the coloring device is also provided.

Abstract: A fiber-and-plastic composite includes a fiber composite, a plastic part, and a silane coupling agent layer and an adhesive layer formed between the fiber composite and the plastic parts. The silane coupling agent layer directly bonds with the fiber composite. The adhesive layer directly bonds with the plastic parts. The silane coupling agent layer comprises hydrolytic silane coupling agent. The adhesive layer includes one-component polyurethane.

Abstract: A housing includes a plastic substrate, an active layer formed on the plastic substrate, and an exterior layer formed on the active layer. The active layer contains polysiloxane and cetyl trimethyl ammonium bromide. The exterior layer contains silicon dioxide or titanium dioxide, and cetyl trimethyl ammonium bromide.

Abstract: A paint composition contains polyurethane paint and nano silicon dioxide. The weight percentage of the nano silicon dioxide in the paint composition is about 2% to about 10%. The surface of the nano silicon dioxide chemically bonds with a silane coupling agent having amino function groups or an aluminate coupling agent having amino function groups.

Abstract: A surface treatment method for substrate includes: spraying liquid is provided, the spraying liquid includes silane coupling agent, leveling agent, isopropyl alcohol, ethanol, acetic acid and water; a substrate having a metallic coating disposed thereon is provided; the spraying liquid is sprayed on the metallic coating, and then spraying liquid is baked to form a transparent protecting layer on the metallic coating; and a painting layer is formed on the protecting layer. The housing formed by the surface treatment method is also provided.

Abstract: A surface treatment process for aluminum alloy includes the steps of: providing an aluminum alloy substrate containing silicon element; evenly distributing the silicon element in the substrate by solution treating the substrate; removing the silicon element at/near the surface of the substrate by acid treating the substrate; forming a porous aluminum oxide film on the substrate by anodizing the substrate; and staining the aluminum oxide film. An aluminum alloy article treated by the process is also described.

Abstract: A device for applying a magnetic field to a container comprises an adjustable magnetic field generator. The adjustable magnetic field generator is adjacent to the container and has a magnet having one magnetic pole adjacent a wall of the container and another magnetic pole away from the wall of the container. The adjustable magnetic field generator comprises a magnet. The intensity of magnetic field applied to the container gradually decreases from the container wall adjacent the magnetic pole of the magnet to the opposite container wall. Method for coloring anode coatings using the device is also provided.

Abstract: A housing includes a base body and a waterproof portion formed on the base body. The base body includes an inner wall, and a first end wall adjacent to the inner wall. The waterproof portion is formed on the inner wall and the first end wall. The waterproof portion contains water-absorbent acrylic resin. A method for manufacturing the housing, and an electronic device using the housing are also provided.

Abstract: A housing includes a plastic substrate and a layer formed on the plastic substrate. The layer contains polysiloxane and epoxy resin. The layer is very thin, but evenly forms on the surface of the plastic substrate. The layer has a high hardness and can effectively protect the plastic substrate from abrasion.

Abstract: A method for making a housing includes the following steps: modifying nano silicon dioxide using thirteen fluorine octyltriethoxysilane to make fluoroalkyl-modified nano silicon dioxide; mixing the fluoroalkyl-modified nano silicon dioxide, an organic solvent, and a filmogen together to make a coating solution; providing a plastic substrate; spraying the coating solution to the surface of the plastic substrate and drying to make a layer.

Abstract: A housing includes a plastic substrate, an active layer formed on the plastic substrate, and an exterior layer formed on the active layer. The active layer contains polysiloxane and cetyl trimethyl ammonium bromide. The exterior layer contains silicon dioxide or titanium dioxide, and cetyl trimethyl ammonium bromide.

Abstract: A housing includes a plastic substrate and a layer formed on the plastic substrate. The layer contains polysiloxane and epoxy resin. The layer is very thin, but evenly forms on the surface of the plastic substrate. The layer has a high hardness and can effectively protect the plastic substrate from abrasion.

Abstract: A method for making a glass-and-plastic composite includes the following steps: providing a glass article; forming an activation solution containing hydrolyzed silane coupling agent; coating the activation solution on the surface of the glass article and drying the activation solution to form a silane coupling agent layer; coating a fluid glue on the silane coupling agent layer and drying the fluid glue to form a glue layer; and forming a plastic article on the glue layer by injection molding. The plastic article firmly bonds with the glass article.