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Nano fibre protective filtering material and its preparation method

A technology of nanofiber and filter material, which is applied in the field of nanofiber protective material and its preparation, can solve the problems of poor effect and achieve the effect of simple processing technology and good air permeability

Inactive Publication Date: 2003-12-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Less effective against very fine particles or aerosols

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of the nanofiber protective material is: dissolving or dispersing one or more polymer materials in a solvent to form a transparent solution or mixture, dispersing additives in the above solution, or melting one or more polymer materials , to obtain the electrospinning raw material, and then put it into the storage tank, and connect it to two or more injection heads through a syringe pump and a catheter, and the injection heads are connected to a high-voltage electric field with a voltage of 1 kV to 120 kV. The receiving part is a layer of fibrous material and is placed on a conductive mesh or plate, which is grounded. Then, electrospinning is carried out in an electric field to obtain a polymer nanofiber membrane material. One or more layers of common polymer fiber materials are superimposed on the surface of the polymer nanofiber layer, and after post-processing such as cutting or heat treatment, or mixed with additives, the nanofiber protective ...

Embodiment 1

[0036] Preparation of nanofiber protective material: The polymer material can be one of poly-L-lactic acid, poly-(D, L)-lactic acid, polyglycolic acid, polycaprolactone, polybutyrolactone, and polyvalerolactone Or a copolymer of at least two of the following monomers: L-lactic acid, (D, L)-lactic acid, glycolic acid, caprolactone, butyrolactone, valerolactone, or their blends.

[0037] For example, 1 gram of poly L-lactic acid with a weight average molecular weight of about 130,000 is dissolved in 10 ml of acetone to form a 10% (mass fraction) polymer solution, stirred for 24 hours, and then added to storage tank 1. Then 1 gram of poly L-lactic acid with a weight average molecular weight of about 130,000 was dissolved in 10 ml of dimethylformamide to form a 10% (mass fraction) polymer solution, stirred for 24 hours, and then added to storage tank 2. The storage tank 1 is connected to the injection head through a syringe pump and a catheter. The injection head is connected to a...

Embodiment 2

[0039] Preparation of nanofiber protective materials: polymers can be polyolefin, polyethylene, polypropylene, polybutadiene, polyisoprene, polyester, polyethylene terephthalate, polybutylene terephthalate Glycol ester, polybutylene terephthalate, polycarbonate, polyamide, nylon 6, nylon 66, nylon 1010, nylon 610, polyether, polyoxyethylene, polyoxypropylene, polyhalogenated hydrocarbon, poly Styrene, polymethylstyrene, polyacrylonitrile, polyvinyl acetate, polyvinyl alcohol, polyacrylic acid, polyacrylate, polyacrylate, polymethacrylic acid, polymethacrylate, polymethacrylate, poly imide, polyphenylene oxide, poly-p-phenylene terephthalate.

[0040] For example, dissolve 2 grams of nylon 6 in 20ml of formic acid to make a 10% (mass fraction) polymer solution, connect it to the injection head through a syringe pump and a catheter, the injection head is connected to a high-voltage positive electric field, and the receiver is a polyester fiber mesh , the bottom of the fiber mes...

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Abstract

The nano fibre protective material is made into the form of a laminar structure, its middle layer is made of high-molecular nano fibre membrane material, the diameter of the nano fibre is 10 nano-3000 nano, and its external layer is respectively one layer or multilayer natural fibre or synthetic fibre or blended fabric on non-woven fabric, and the diameter of fibre is 1 micrometer-100 micrometers. Its preparation method includes the following steps: dissolving or dispersing one or several kinds of high-molecular materials in solvent to obtain transparent solution or mixture, dispersing additive into the above-mentioned solution or melting one or several kinds of high-molecular materials to obtain electric spinning material, then adding said electric spinning material into one or several storage tanks.

Description

1. Technical field: [0001] The invention relates to a nanofiber protective material and a preparation method thereof, belonging to the technical field of protective material preparation. 2. Background technology: [0002] Protective materials can be made of natural fibers or synthetic fabrics, and non-woven fabrics can also be used. Cotton masks are the most common material for protecting particles from entering the respiratory tract. Medical masks are often made of non-woven fabrics. The diameter of the fibers is about 20 microns. The pore size between them is larger, and the filtering effect on fine particles is not very good. [0003] Protective clothing is often made of non-woven fabrics, and the pores between the fibers are also relatively large. A kind of protective material is that a plastic film material etc. is sandwiched in a fiber fabric to impart a heat-retaining function. Protective clothing made of impermeable plastic film material is uncomfortable to wear. ...

Claims

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Application Information

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IPC IPC(8): B01D39/04B32B5/26D01D5/00
Inventor 李新松姚琛浦跃朴
Owner SOUTHEAST UNIV
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