A coating film is provided on the surface of a car body of an automobile and includes a plurality of protruding portions extending along the car body in a direction intersecting the length direction of the car body.

The present invention provides a solvent composition that can inhibit corrosion of a metal, a cleaning method using the solvent composition, and a method for producing an article provided with a coating film. The solvent composition of the present invention comprises 1-chloro-2,3,3-trifluoropropene and a specified second component, and is characterized in that the proportion of the total amount of the content of the second component to the sum of the content of 1-chloro-2,3,3-trifluoropropene and the total amount of the content of the second component is from 0.0001 to 1.0 mass %.

The present invention provides a solvent composition that can inhibit corrosion of a metal, a cleaning method using the solvent composition, and a method for producing an article provided with a coating film. The solvent composition of the present invention comprises 1-chloro-2,3,3-trifluoropropene and a specified second component, and is characterized in that the proportion of the total amount of the content of the second component to the sum of the content of 1-chloro-2,3,3-trifluoropropene and the total amount of the content of the second component is from 0.0001 to 1.0 mass %.

The present invention aims to provide a metal coating method whereby a paint can be applied directly, easily, with high adhesion, and with cost increases suppressed, to the surface of titanium and other metals that have a hard passivated coating on the surface thereof. This method uses paint to coat a metal that has the surface thereof coated in a passivated coating and comprises: an etching step in which the passivated coating is removed using an etching solution and the surface is exposed; a diluent coating step in which, after the etching step, a diluent capable of diluting the paint is coated on the surface that is in a liquid-coated state; and a painting step in which the surface is coated in paint after the diluent coating step.

The present invention aims to provide a metal coating method whereby a paint can be applied directly, easily, with high adhesion, and with cost increases suppressed, to the surface of titanium and other metals that have a hard passivated coating on the surface thereof. This method uses paint to coat a metal that has the surface thereof coated in a passivated coating and comprises: an etching step in which the passivated coating is removed using an etching solution and the surface is exposed; a diluent coating step in which, after the etching step, a diluent capable of diluting the paint is coated on the surface that is in a liquid-coated state; and a painting step in which the surface is coated in paint after the diluent coating step.

Disclosed are a protective coating layer, and a preparation method and use thereof. The present application provides a protective coating layer, including: a rusty-surface liquid layer, a nano-zinc yellow epoxy primer layer, a nano-epoxy micaceous iron oxide (MIO) intermediate coating layer, and a nano-fluorocarbon top coating layer, where the rusty-surface liquid layer is applied on a metal substrate; the nano-zinc yellow epoxy primer layer is applied on a surface of the rusty-surface liquid layer; the nano-epoxy MIO intermediate coating layer is applied on a surface of the nano-zinc yellow epoxy primer layer; and the nano-fluorocarbon top coating layer is applied on a surface of the nano-epoxy MIO intermediate coating layer. The present application effectively solves the technical problem that the existing protective coating layer with nanoparticles exhibits poor adhesion to a substrate and cannot provide a protective effect for a long time.

Disclosed are a protective coating layer, and a preparation method and use thereof. The present application provides a protective coating layer, including: a rusty-surface liquid layer, a nano-zinc yellow epoxy primer layer, a nano-epoxy micaceous iron oxide (MIO) intermediate coating layer, and a nano-fluorocarbon top coating layer, where the rusty-surface liquid layer is applied on a metal substrate; the nano-zinc yellow epoxy primer layer is applied on a surface of the rusty-surface liquid layer; the nano-epoxy MIO intermediate coating layer is applied on a surface of the nano-zinc yellow epoxy primer layer; and the nano-fluorocarbon top coating layer is applied on a surface of the nano-epoxy MIO intermediate coating layer. The present application effectively solves the technical problem that the existing protective coating layer with nanoparticles exhibits poor adhesion to a substrate and cannot provide a protective effect for a long time.

The present invention relates to an eco-friendly and simple super-hydrophobic coating method that does not use harmful substances and special equipment. Coating according to the present invention may be performed as a single process without special equipment, and because only eco-friendly materials are used, the coating material may be easily used and discarded. In addition, even a three-dimensional pipe or a heat-exchanger having a complex shape may be modified to have super-hydrophobicity by applying the present coating, and a super-hydrophobic metal filter may be manufactured and used for oil-water separation. As a result, the present coating method is eco-friendly, simple, and applicable to various substrates, so it has great potential for application in various industries.

In an embodiment, the present disclosure pertains to a method of forming a self-assembled monolayer coating on a surface of a substrate. In general, the method includes polishing the substrate, cleaning the substrate, and creating a plurality of bonding sites on the surface of the substrate for head groups of an organofunctional silane molecule to bond. In some embodiments, the creating includes at least one of a liquid-phase chemistry process or a dry plasma chemistry process. In some embodiments, the method further includes coating the substrate with a silane coating solution. In some embodiments, the coating is performed in a controlled environment. In some embodiments, the controlled environment includes an anhydrous environment free of at least one of water or moisture. In a further embodiment, the present disclosure pertains to a heat transfer composition having a coating thereon applied via the methods of the present disclosure.

In an embodiment, the present disclosure pertains to a method of forming a self-assembled monolayer coating on a surface of a substrate. In general, the method includes polishing the substrate, cleaning the substrate, and creating a plurality of bonding sites on the surface of the substrate for head groups of an organofunctional silane molecule to bond. In some embodiments, the creating includes at least one of a liquid-phase chemistry process or a dry plasma chemistry process. In some embodiments, the method further includes coating the substrate with a silane coating solution. In some embodiments, the coating is performed in a controlled environment. In some embodiments, the controlled environment includes an anhydrous environment free of at least one of water or moisture. In a further embodiment, the present disclosure pertains to a heat transfer composition having a coating thereon applied via the methods of the present disclosure.