Metal collector slab core diversion pipe anticorrosive film and preparation process and film plating process thereof

Abstract

The invention relates to a technology for corrosion protection of metal pipes, and in particular relates to a metal pipe anticorrosive film and a preparation process and a film plating process thereof. The invention discloses a metal collector slab core diversion pipe anticorrosive film and a preparation process and a film plating process thereof, wherein the anticorrosive film is prepared from the following components in parts by weight after mixing: 15 to 25 parts of polytetrafluoroethylene emulsion, 1 to 2 parts of sodium polyacrylate, 6 to 10 parts of shellac, 15 to 20 parts of absolute ethyl alcohol and 40 to 60 parts of water. The metal collector slab core diversion pipe anticorrosive film has good corrosion resistance, and can protect metal pipes while heat transfer is not influenced.

Description

technical field [0001] The invention relates to the metal pipe anticorrosion technology, in particular to the anticorrosion film of the metal pipe and its preparation process and coating process. Background technique [0002] The plate core of the flat solar collector is composed of upper and lower headers and a chip guide tube with heat-absorbing fins. It is usually made of metal materials, especially the aluminum heat collector plate has high heat collection efficiency, good heat transfer, and low processing cost, so It is widely used, but its anti-corrosion performance is poor. Sodium carbonate and calcium carbonate in water are easy to cause corrosion inside the diversion tube and affect the service life of the collector. In order to prolong the service life, some people choose industrial stainless steel tubes and copper tubes as production materials. This greatly increases the cost, and the welding of industrial stainless steel is difficult, and the copper tube cannot w...

AI Technical Summary

Problems solved by technology

[0002] The plate core of the flat solar collector is composed of upper and lower headers and a chip guide tube with heat-absorbing fins. It is usually made of metal materials, especially the aluminum heat collector plate has high heat collection efficiency, good heat transfer, and low processing cost, so It is widely used, but its anti-corrosion performance is poor. Sodium carbonate and calcium carbonate in water are easy to cause corrosion to the inside of the diversion tube and affect the service life of the collector. In order to prolong the service life, some people choose industrial stainless steel tubes and copper tubes as production materials. This greatly increases the cost, and the welding of industrial stainless steel is difficult, and the copper tube cannot withstand the corrosion of chloride ions. Therefore, it is necessary to study other more suitable methods for the anti-corrosion technology in the diversion tube of the collector plate core