Ultrathin polymer composite membrane for realization of five-prevention and oxygen enrichment functions of mask and application

Abstract

The invention belongs to the technical field of medical treatment and public health, and discloses an ultrathin polymer composite membrane for realization of five-prevention and oxygen enrichment functions of a mask. A supporting layer of the ultrathin polymer composite membrane is a porous ultrathin membrane carrier layer made of porous material; the surface of the porous ultrathin membrane carrier layer is covered with a homogeneous aporate ultrathin polymer membrane layer; the homogeneous aporate ultrathin polymer membrane layer is a homogeneous aporate compact layer made of a polymer which has high oxygen permeability or has high selectivity in the oxygen permeation process meeting the requirements of a solution-diffusion model; the rate of permeability coefficients of oxygen to nitrogen in the homogeneous aporate ultrathin polymer membrane layer is (1.5-6):1; the thickness of the homogeneous aporate ultrathin polymer membrane layer is 0.001-5 microns. The composite membrane provided by the invention enables the mask to have the functions of preventing dust particles (including PM2.5), virus, bacteria, pollutants and smoke dust, and to further achieve an oxygen enrichment function.

Description

technical field [0001] The invention belongs to the field of medical and health technology, and specifically relates to a mask that can be used to produce five defenses and oxygen-enriched functions, and is made of a polymer with a high oxygen permeability or a highly selective permeation of oxygen that complies with a dissolution-diffusion model composite film. Background technique [0002] In the prior art, polymer gas separation membranes are polymer membranes used to separate mixed gases, usually divided into porous membranes and non-porous membranes, and the main parameters are permeability coefficient and separation coefficient. Different polymer membranes have different permeability and selectivity to different types of gas molecules, so a certain gas can be selectively separated from the gas mixture, such as collecting oxygen from the air. General Electric Company of the United States uses polycarbonate and organosilicon copolymer as the separation membrane, and 40%...

AI Technical Summary

Problems solved by technology

However, there is currently no technology or product that can meet the functions of the five defenses (that is, dust prevention (including anti-PM2.5), anti-virus, anti-bacteria, anti-pollution, and anti-smoke) functions, and while meeting the five defense functions, it can also provide oxygen-enriched air. f

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