Antibacterial and antiviral modification method of electret melt-blown non-woven fabric

Abstract

The invention provides an antibacterial and antiviral modification method of an electret melt-blown non-woven fabric. Firstly, a powder antibacterial agent is subjected to high-voltage electric polarization, and then the powder antibacterial agent is filtered and adsorbed through an electret melt-blown non-woven fabric in a powder antibacterial agent airflow blowing mode, so that the powder nano-antibacterial agent is attached to the surfaces of fibers of the electret melt-blown non-woven fabric through an electrostatic adsorption effect, and the electret melt-blown cloth with excellent antibacterial and virus-killing performance is prepared. In the whole modification process, no harsh technical conditions are needed, the electrostatic adsorption effect of the melt-blown non-woven fabric is not changed or reduced, no adhesive covers, the antibacterial and virus-killing performance of the powder nano-antibacterial agent can be exerted to the maximum extent, and the antibacterial and virus-killing performance of the melt-blown non-woven fabric is improved. The electrostatic effect and filtering permeability of the electret melt-blown non-woven fabric are reserved to the maximum extent, and the electret melt-blown non-woven fabric has important market economic value.

Description

technical field [0001] The invention relates to the technical field of electret filter material modification, in particular to an antibacterial and antiviral modification method of electret melt-blown non-woven fabric. Background technique [0002] Fiber materials and their non-woven medical protective products, such as masks, protective clothing, isolation clothing, caps, shoe covers, etc., have played an important role in protecting the lives of medical staff and ordinary people. After the existing non-woven fabric-based medical protection products are used, a large number of harmful microorganisms will easily adhere to their outer surfaces, which not only poses a safety threat to the medical staff and ordinary people who wear them, but also the poor disposal of their wastes will act as a second aid to the epidemic situation. The sources and routes of transmission of pollution seriously threaten the rapid interruption of major infectious disease outbreaks. In order to cop...

AI Technical Summary

Problems solved by technology

[0010] However, the above-mentioned modified antibacterial and virus-killing technical solutions will seriously weaken the electrostatic effect of electret melt-blown cloth: the technology of blending and filling antibacterial agents will disturb the electrostatic effect strength and distribution of electret fibers; The surface of propylene electret melt-blown non-woven fabric is extremely chemically inert, and requires complex surface coating and covalent bonding technology to improve the interface fastness. However, the harsh environment and conditions during the modification process will seriously reduce the electrostatic effect and durability. At the same time, it will deteriorate the breathability and hand feeling of the electret meltblown nonwoven fabric

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