Preparation method of nickel-polytetrafluoroethylene coating

Abstract

The invention relates to the technical field of electroplating, and particularly relates to a preparation method of a nickel-polytetrafluoroethylene coating. According to the invention, nickel is combined with polytetrafluoroethylene, a fluorinated ethylene-propylene copolymer, a perfluoroalkoxy copolymer and other assistants to be used as an electroplating solution and used for electroplating under certain conditions. The invention can be widely applied to various base materials such as steel, copper alloys, wrought aluminum, cast iron, stainless steel and the like, and can be also perfectly used on various injection molding materials except pure rubber, such as silica gel, TPO0, PVC (polyvinyl chloride) and the like. The coating is favorable in wear resistance and non-corrosibility, has weldability and hardenability, and causes no negative effect on the surfaces of other molds.

Description

technical field

[0001] The invention relates to the technical field of electroplating, in particular to a preparation method of a nickel-polytetrafluoroethylene coating. Background technique

[0002] Electroplating is the process of plating a thin layer of other metals or alloys on some metal surfaces by using the principle of electrolysis. During electroplating, the plated metal is used as the anode, which is oxidized into cations and enters the electroplating solution; the metal product to be plated is used as the cathode, and the cations of the plated metal are reduced on the metal surface to form a coating. In order to eliminate the interference of other cations and make the coating uniform and firm, it is necessary to use a solution containing metal cations as the electroplating solution to keep the concentration of metal cations in the coating unchanged.

[0003] The purpose of electroplating is to deposit a metal coating (deposit) on the substrate to change the surfa...