A kind of nanofiber multi-layer composite filter mask and preparation method thereof

Abstract

The invention discloses a nanofiber multilayer combined filter mask and a production method thereof. The production method includes: dissolving polymer nanofiber in solvent to prepare polymer nanofiber solution; applying the polymer nanofiber solution to one side or both sides of a support base through an electrospinning unit to obtain monomer material; laminating the monomer material to obtain multilayer combined material. The support base is used as a support frame, thus the compact nanofiber layer can be effectively isolated to reduce the resistance; the multilayer structure helps ensure low resistance and high filtering efficiency; the mask can stop particles in the air and is good in air permeability, and the multilayer structure also helps improve the filtering efficiency.

Description

technical field [0001] The invention belongs to the technical field of daily necessities, and in particular relates to a functional mask. Background technique [0002] With the rapid development of the economy, people's living standards have been greatly improved, but economic development has also brought about very serious environmental problems. Due to various natural disasters such as volcanic eruptions, the concentration of particulate matter in the air has greatly increased, especially PM2.5 particles (very fine particles with a diameter of less than 2.5um in the air), which have important effects on air quality and visibility. influences. Compared with coarser atmospheric particulate matter, fine particulate matter has a smaller particle size, is rich in a large amount of toxic and harmful substances, has a long residence time in the atmosphere, and has a long transportation distance, so it has a greater impact on human health and atmospheric environment quality. Stu...

AI Technical Summary

Problems solved by technology

Fine particles can float to farther places, so the influence range is larger

[0003] In order to prevent such fine particles from invading the human body, masks have become a must-have in people's lives. The main materials used in current masks are traditional non-woven non-woven fabrics. The diameter of this material is about ten microns, and the aperture is relatively small. Large, it can only filter larger particles, and the filtering effect on fine particles is poor, which cannot meet people's needs

[0004] Polymer nanofibers are superfine fibers with a diameter of tens to hundreds of nanometers, with large specific surface area and small pore size, which can effectively filter fine particles. A kind of nanofiber mask is disclosed in CN104106854A, and its nanofiber layer is selected from polystyrene Polymers such as ethylene, polysulfide, acrylic resin, and the nanofiber layer is located between the support layer and the nanofiber backing layer, which is a single-layer structure. Although it can play a role in filtering, the traditional single-layer nanofiber When a certain filtration efficiency is guaranteed, the resistance has also been greatly improved, which reduces the comfort of the mask and makes it easy to suffocate.