Nanometer material filter screen and preparation method thereof

Abstract

The invention belongs to the technical field of air purification, and particularly discloses a filter screen taking a nanometer material as a filter. The filter screen comprises a felt type non-woven fabric and filter substances adhered to the felt type non-woven fabric, wherein a woody activated carbon powder is adsorbed on one side of the felt type non-woven fabric, while a nano-scale titanium dioxide powder is adsorbed on the other side of the non-woven fabric; and the felt type non-woven fabric is covered on the outer sides of the woody activated carbon powder and the titanium dioxide powder respectively and is in press-fit to form an integral filter screen. The nanometer material filter screen disclosed by the invention adopts the nano-scale titanium dioxide as a strong oxidant and a strong reducing agent, so that the filter screen can effectively isolate and kill hazardous substances and harmful bacteria, can shorten survival time of viruses in air, can be applied as an isolation material for sealing doors and windows in various places such as a hospital, a lab, and a dormitory, furthermore can be used as a biochemical isolation material, and has the advantages of light weight, convenience in installation and use, practicability in the effect and the like.

Description

technical field [0001] The invention belongs to the technical field of air purification, in particular to a filter screen using nanomaterials as a filter and a preparation method for the nanomaterial filter screen. Background technique [0002] At present, there are chemical agent method, physical sterilization method and physical adsorption method for air purification. Chemical agent method: For example, chlorine-containing disinfectants such as peracetic acid are used to spray for disinfection, but due to the short effective time, excessive use of concentration will have adverse effects on human health. Physical sterilization method: use ultraviolet light, ozone, etc. to sterilize, but due to the impact of ozone on the human body, it cannot be used in an environment with people. Physical adsorption method: use adsorbents to absorb viruses, bacteria and ultrafine dust, but once the adsorption reaches saturation, it can no longer be used. [0003] The above three air purif...

AI Technical Summary

Problems solved by technology

Chemical agent method: such as spraying disinfection with chlorine-containing disinfectants such as peracetic acid, but due to the short effective time, excessive use of concentration will have adverse effects on human health

Physical sterilization method: use ultraviolet light, ozone, etc. to sterilize, but due to the impact of ozone on the human body, it cannot be used in an environment with people

Physical adsorption method: use adsorbents to absorb viruses, bacteria and ultrafine dust, but once the adsorption reaches saturation, it can no longer be used

[0003] The above three air purification methods are only aimed at air sterilization and purification in a certain space, and cannot be used for isolation air purification. For the special period of infectious disease outbreaks, if there are suspected cases, measures to isolate all relevant personnel are generally taken , this will inevitably lead to many innocent people being implicated, and they will be infected with the disease if they are in the same closed space as the confirmed patient. This is unfair to them and violates human rights, but in order to prevent the spread of the disease, Only by adopting this measure of sacrificing the minority and protecting the majority

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