An ultra-low resistance three-dimensional composite membrane filter element and a protective mask made of it

Abstract

The invention discloses an ultra-low-resistance three-dimensional composite membrane filter element and a protective mask made thereof. The composite membrane filter element is a three-dimensional honeycomb support body, the honeycomb support body has honeycomb holes, and the honeycomb holes are along the axial direction of the honeycomb support body. The intervals are staggered or arranged in parallel, the inner wall surface of the honeycomb hole is provided with an inorganic film layer, the two ends of the honeycomb hole are respectively provided with plugs in a staggered manner, and the honeycomb support body and the inorganic film layer on the inner wall surface of the honeycomb hole are integrated. Hydrophobic modification forms a hydrophobic three-dimensional composite membrane layer. The three-dimensional composite membrane filter element with good air permeability of the present invention can be used for gas masks and protective clothing, and makes the gas mask and protective clothing have a breathing function, that is, gas can enter and exit the gas mask and protective clothing. The natural exchange process eliminates the hot and humid environment of the body, so that the body and mind are in a natural state. At the same time, the silver ions and the modifying solution are combined to form a modified three-dimensional composite film layer with anti-virus function.

Description

technical field [0001] The invention belongs to the repeatedly regenerated composite membrane filter element and a protective mask made of it in the technical field of sanitation. Background technique [0002] As we all know, masks and gas masks are health care and safety products commonly used in people's daily production and life, and are also necessary for medical workers, firefighters and workers in high-dust working environments. [0003] At present, there are mainly the following types of masks on the market: cotton masks, gauze masks, activated carbon masks, medical masks, industrial dust masks and gas masks or masks, etc. No matter what type of masks, they all belong to two-dimensional multi-layer media filtration The filter area is very small. Even if the porosity of a single layer of fiber cloth is greater than 80%, the porosity of a mask composed of three or four layers of fiber cloth is at most 50% to 60%. If the protection requirements are high, the resistance w...

AI Technical Summary

Problems solved by technology

The gap between fibers is closed, the resistance increases rapidly, breathing is difficult, the ability to block bacteria, viruses and ultra-fine particles is very limited, and it cannot be regenerated repeatedly. It is replaced every day, and the cost is very high

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