Polyethylene mixing material for high-cohesive-force electrolytic cathode plate sealing strip and preparation method thereof

Abstract

The invention provides a polyethylene mixing material for a high-cohesive-force electrolytic cathode plate sealing strip and a preparation method thereof, which belong to the technical field of plastic processing and application and the technical field of wet electrolysis of metal including copper and the like. The polyethylene mixing material for producing the electrolytic cathode plate sealing strip comprises, by weight: 100 parts of polyethylene resin, 0.1-20 parts of linear low-density polyethylene resin, 0.1-10 parts of functional polymers, 0.1-1 part of antioxygen, 0.05-1 part of metal deactivator and appropriate parts of colorants. The mixing material has the advantages of being long in service life, high in cohesive strength with a cathode plate and the like.

Description

technical field [0001] The invention relates to a polyethylene compounding material for high-adhesion electrolytic cathode plate sealing strips and a preparation method, which has the characteristics of good bonding performance with the cathode plate and long service life, and belongs to the technical field of plastic processing and application and wet electrolysis technology for metals such as copper field. Background technique [0002] At present, the industrial production of high-purity copper, manganese, and zinc mainly adopts the method of electrolysis. Among them, an important production part is the cathode plate. Negative charges are introduced through the electrodes, and divalent copper ions, manganese ions, and zinc ions are reduced on the cathode plate to form copper, manganese, and zinc, and then the cathode copper is stripped off by the stripping unit to form High purity metal. The cathode plate is mainly made of stainless steel or titanium. In order to achieve...

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Problems solved by technology

However, due to the creep characteristics of polymer materials, especially when the temperature of the medium electrolyte is high, creep phenomenon is more likely to occur, so that the insulating sealing strip of the above structure is not clamped tightly, and the sealing strip and the cathode plate have to be clamped. Apply sealant to the junction, which not only increases the cost, but also easily causes the electrolyte to penetrate into the cathode plate of the sealing strip due to the weak adhesion between the sealant and the sealing strip itself, so that the metal is restored to the sealing strip , under the action of mechanical force during peeling, the sealing strip is accelerated and destroyed

[0004] As a result, the sealing and insulating edge strips of the existing electrolytic cathode plates mostly have the defects of weak adhesion and short life.

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