Enhanced perfluorinated ion membrane tape-casting machine

Abstract

The invention discloses an enhanced perfluorinated ion membrane tape-casting machine. The upper surface of a lower drying tunnel (24) is connected with an upper drying tunnel (17) through a plurality of connecting bases (26) into a whole; the lower drying tunnel (24) and the upper drying tunnel (17) are supported by a plurality of supporting mechanisms (25); one end of each of the upper drying tunnel (17) and the lower drying tunnel (24) is connected with a machine head mechanism (2); the other end of each of the upper drying tunnel (17) and the lower drying tunnel (24) is connected with a machine tail mechanism (20); a steel band (19) which penetrates through profile cavities of the upper drying tunnel (17) and the lower drying tunnel (24) is arranged between a driving roller (3) and a driven roller (21); a foam breaker (9) is positioned at the upper face of a bracket (54) on the upper drying tunnel (17); the upper end of the foam breaker (9) is connected with a feeding pipe; the lower end of the foam breaker (9) is connected with a feeding inlet of a tape-casting mechanism (7). The tape-casting machine provided by the invention can continuously produce enhanced ion membrane products with good isotonicity, high quality and uniform thickness in a batch, and can also meet the requirement of mass production, the production efficiency is improved, and film-forming quality is guaranteed.

Description

technical field [0001] The invention relates to an ion membrane manufacturing device, in particular to an enhanced perfluorinated ion membrane casting machine. Background technique [0002] Most of the ion exchange diaphragms used in water electrolysis hydrogen production, fuel cells, chlor-alkali electrolysis and other industries are perfluorinated ion membrane products. The mass production methods of this product mainly adopt extrusion method, casting film method and casting method . The extrusion method is to extrude the perfluorosulfonic acid ion exchange resin into a film through a high-precision screw under a certain temperature and pressure. The film casting method is to cast a film by slowly evaporating and crystallizing the casting liquid at a heating temperature 10-30°C lower than the boiling point of the solvent. During the crystallization process of the solute, the casting plate and the casting liquid in it are in a static closed Space, under the radiant he...

AI Technical Summary

Problems solved by technology

However, the extrusion method cannot produce enhanced ionic membranes, and although the casting method can produce enhanced ionic membranes, the cost of raw materials is high, the amount of solvent used is large, the production cycle is long, continuous production is not possible, and the production efficiency is low.

If the existing cast equipment is used to process the enhanced ionic membrane with uneven thickness, due to the low viscosity of the slurry for the production of perfluorinated ionic membrane, the slurry flows on the reinforced mesh, and countless bubbles of different sizes appear. , unable to control the generation and elimination of air bubbles, resulting in waste film and uneven thickness

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