Filling resin of electrolytic zinc negative plate stripping mouth and processing technology thereof

Abstract

The invention discloses a filling resin of an electrolytic zinc negative plate stripping mouth and a processing technology thereof. The filling resin is prepared by mixing component A and component B at a weight ratio of 2:1; the component A comprises bisphenol-F-epoxy resin, a epoxy resin diluent, a flexibilizer, silicon carbide filling material, a hydrolytic stabilizer and an adhesion promoter; and the component B comprises polyamide 650 curing agent, polysulfide rubber flexibilizer, mica and a color paste. Optimized selection and reasonable combination of raw materials with different performances, and a double-component mixing process are employed in the preparation of the filling resin, so that the filling resin is capable of solidifying quickly at room temperature, and possesses high bonding strength and peeling resistance after solidification, and also possesses excellent acid corrosion resistance, high temperature resistance, ageing resistance, and current shock resistance. The insulativity is high, cost is low, and storage requirements are few. The filling resin is easy to produce, is non-toxic, and is appropriate to be used as the filling resin of the electrolytic zinc negative plate stripping mouth.

Description

technical field [0001] The invention relates to the technical field of electrolytic equipment, in particular to a resin for filling the peeling opening of an electrolytic zinc cathode plate and a processing technology thereof. Background technique [0002] In the wet electrolytic zinc smelting process, since the liquid level of the electrolyte in the electrolytic cell will fluctuate, the upper opening of the zinc sheet forms an irregular wavy slope, and it is difficult for the zinc stripping knife to be inserted between the zinc sheet and the cathode plate. It is conducive to the stripping of zinc flakes, so in the field of modern electrolytic zinc, the stripping port is usually pre-processed on the cathode plate, and the insulating material is poured in the stripping port. There is no zinc deposition or the deposition amount is small, and the zinc stripping knife can easily strip the zinc sheet and the cathode plate from the stripping opening, which improves the work effici...

AI Technical Summary

Problems solved by technology

However, since the insulating material of the peeling port is in the environment of strong acid corrosion and current impact at about 50°C for a long time, and there will be strong mechanical vibration during mechanical stripping, the insulating material is easily loosened or peeled off due to corrosion and vibration, or due to the hardness of the insulating material. Insufficient and difficult to use with mechanized zinc stripping equipment, and once the insulating material is filled and replaced, it will seriously affect the normal production and the maintenance cost is high, so the corrosion resistance, bonding performance, and current shock resistance of the insulating material at the stripping port High performance and mechanical performance requirements

In the prior art, conventional resin glue is generally used for filling, and the anti-current shock performance is poor. Generally, there will be a small amount of zinc deposition on the surface after about 2 months of use, which is not conducive to zinc stripping operation; and the corrosion resistance and adhesive performance are also poor. Poor. According to research, in the current wet electrolytic zinc smelting factories, the service life of the stripping port after filling resin bonding is generally only 3 to 4 months