Electrospinning composite micro-nano fiber air filtration membrane and preparing method thereof

Abstract

The invention discloses an electrospinning composite micro-nano fiber air filtration membrane and a preparing method thereof. The air filtration membrane is prepared through an electrospinning method, the composite micro-nano fiber of the air filtration membrane is formed by nano-silver particles, enteromorpha activated carbon/titanium dioxide composite particles and a water insoluble high-molecular polymer, wherein the enteromorpha activated carbon/titanium dioxide composite particles are prepared from electrospinning TiO2/high-molecular polymer/enteromorpha nano particles (enteromorpha nano dry powder) composite nano fiber membrane through high-temperature heat treatment, acid pickling and smashing. The air filtration membrane is simple in preparing method, excellent in performance and capable of effectively adsorbing and decomposing formaldehyde and other harmful substances while blocking and filtering dust pollutants and has a good antibacterial function and a good comprehensive protection effect.

Description

technical field [0001] The invention relates to an electrospun composite micro-nano fiber air filter membrane and a preparation method thereof. Background technique [0002] Air pollution is a phenomenon in which the concentration of pollutants in the atmosphere reaches a harmful level, exceeds the environmental quality standard, destroys the ecological system and normal living conditions of human beings, and causes harm to people and things. With the development of modern industry and transportation, more and more substances are continuously discharged into the atmosphere, and the types are becoming more and more complex, causing rapid changes in the composition of the atmosphere, and the form of air pollution is becoming more and more severe. However, in addition to the air pollution caused by the industrialization process, the indoor air pollution caused by decoration cannot be ignored. There are more than 500 volatile substances in the indoor air, including more than 20 ...

AI Technical Summary

Problems solved by technology

As a filter material, the air filter membrane can be applied to masks or air purifiers to filter and purify the air. However, the traditional air filter membrane has a single structure and material composition and can only filter through its mesh material. Some solid dust pollutants have basically no effect on indoor air pollutants such as formaldehyde and pathogenic bacteria in the air, so they cannot achieve an ideal protective effect

There are also some products that combine activated carbon materials with filter materials in order to remove pollutants such as formaldehyde and benzene. However, activated carbon particles can only absorb pollutants in the air, and cannot treat pollutants, and cannot decompose harmful substances such as formaldehyde. Generally, its adsorption capacity will weaken significantly after being used for a period of time, and although the activated carbon material currently prepared by conventional methods has a large porosity, its pores are too large and its adsorption capacity is very limited. In terms of removing harmful substances such as formaldehyde The effect is very little, and the activated carbon itself does not have antibacterial effect. Simply combining the existing activated carbon material with the filter material to deal with air pollution, especially indoor air pollution, still cannot achieve the ideal protective effect.