Non-woven film and charged non-woven biological protection mask prepared by same and preparation method

Abstract

The invention belongs to the field of biological protection, and particularly relates to a non-woven film and a charged non-woven biological protection mask prepared by the same and a preparation method thereof. Zein is used as raw materials by the non-woven film, the zein is abundant in source, low in cost and biodegradable, and the zein has the functions of being skin loving, oxidation resistance, ultraviolet ray resistance, bacterium resistance and the like, better face attaching performance can be achieved after the non-woven film is spun. According to the charged nanofiber non-woven biological protection mask prepared by the non-woven film, the inner layer of the mask is the non-woven film prepared by the zein, positive electric charges are attached on an outer layer, and the filter efficiency of the mask can be improved obviously. A charged nanofiber non-woven double-layer film prepared through an electrospinning technique can isolate virus through the dual functions of electrical charge absorption and mechanical isolation, an effective protective function is performed, and the charged non-woven biological protection mask can be used as a medical functional type biological protection mask.

Description

technical field [0001] The invention belongs to the field of biological protection, in particular to a nonwoven film and a charged nanofiber nonwoven medical functional biological protective mask prepared by using the nonwoven film, and a charged nanofiber nonwoven medical functional mask prepared based on electrospinning technology Type biological protective mask method. Background technique [0002] Biological protection has always been a major issue in natural disasters and wars. The protection in the rescue process such as earthquakes and floods, as well as the protection against epidemic viruses such as SARS and H1N1, all require biological protective masks with excellent performance; Rescue and protection present new challenges. But currently on the market, there are few practical masks with good barrier function to solid liquid and microorganisms, good air permeability and comfort, and low price. [0003] In recent years, the most important feature of the new N95 f...

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Problems solved by technology

[0003] In recent years, the most important feature of the new N95 filter mask prepared by adopting the new dust respiratory protection standard NIOSH-42CFR84 of the National Institute of Occupational Safety and Health (NIOSH) is that it can prevent the droplet infection caused by the patient's body fluid or blood splash, its filtration efficiency and protection The effect is obviously better than that of ordinary gauze masks, but it still has the following disadvantages: (1) About 10%-20% of people do not fit the mask well, and the mask cannot be well veneered; (2) N95 masks are not suitable for The protective effect of infectious viruses is not ideal; (3) The filter materials of most N95 masks are made of difficult-to-degrade polymers such as polypropylene, which will bring great pressure to the environment after being discarded in large quantities

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