Composite water-gas separation membrane with support body as well as preparation method and application of composite water-gas separation membrane

Abstract

The invention discloses a composite water-gas separation membrane with a supporting body as well as a preparation method and application thereof. The preparation method comprises the following steps: obtaining a membrane pressing flat plate with a polytetrafluoroethylene coating on the surface; pretreating the support body; pretreating the film layer; sequentially mounting a bottom-layer flat plate, the pretreated support body, the pretreated membrane layer and the pretreated membrane pressing flat plate from bottom to top, then performing hot pressing, and cooling to obtain the composite water-gas separation membrane with the support body. According to the method, the hot-melt monomer membrane layer and the support body layer can be compounded in a highly reliable manner, so that the pressure resistance is improved, the air permeability of the water-gas separation membrane is not reduced, and the method is applicable to the deep sea dissolved gas sensor.

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