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Preparation method of nanometer cobweb/ nanometer fiber composite protective material

A technology of nanofibers and protective materials, applied in fiber processing, filament/thread forming, chemical instruments and methods, etc., can solve the problems of large pore size of protective materials and poor virus filtering effect, and achieve low price, high protection rate, Good air permeability

Inactive Publication Date: 2009-10-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing a nano-spider web / nanofiber composite protective material, so as to solve the problems of the above-mentioned protective material with large pore size and poor virus filtering effect

Method used

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  • Preparation method of nanometer cobweb/ nanometer fiber composite protective material
  • Preparation method of nanometer cobweb/ nanometer fiber composite protective material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] At room temperature of 25°C, 0.5 g of nylon 6 was stirred and dissolved in 9.5 g of formic acid solution at a rotating speed of 50 rpm / min, and stirred until all the solids were dissolved, and the solution was a colorless and transparent liquid to obtain a nylon 6 solution with a mass fraction of 5%.

[0020] Under the conditions of room temperature of 25°C and humidity of 30%, a nylon 6 solution with a mass fraction of 5% was input to the spinneret of the self-cleaning multi-nozzle matrix array spinneret 3 through the liquid supply device 1 at a flow rate of 0.1 mL / h. On, the spinneret is connected with the high-voltage electrostatic generator 6 of 10 kilovolts to carry out electrospinning simultaneously, and the spun silk is covered with a layer of top material aluminum foil after receiving with a layer of base material aluminum foil placed on the receiving device 7 drum, The vertical distance a between the spinneret and the substrate is 5 cm, and the nano-cobweb / nanof...

Embodiment 2

[0022] At room temperature of 25°C, 1.5g of polyacrylic acid was stirred and dissolved in 18.5g of ethanol (95wt%) solution at a rotating speed of 1200rpm / min, and stirred until all the solids were dissolved, and the solution was colorless and transparent to obtain a polyacrylic acid solution with a mass fraction of 7.5% .

[0023] Under the conditions of room temperature of 25°C and humidity of 30%, a polyacrylic acid solution with a mass fraction of 7.5% was input to the spinnerets of the self-cleaning multi-nozzle matrix array spinneret 3 through the liquid supply device 1 at a flow rate of 10mL / h At the same time, the spinneret is connected to the high-voltage electrostatic generator 6 of 80 kV for electrospinning, and the spun silk is received by a layer of base non-woven fabric placed on the drum of the receiving device 7 and then covered with a layer of non-woven fabric. , the vertical distance a between the spinneret and the substrate is 30 cm, and hot pressing at 40° ...

Embodiment 3

[0025] At room temperature of 25°C, 5g of polyvinyl alcohol was stirred and dissolved in a mixed solution of 15g of ethanol (95wt%) and formic acid (weight ratio 3:1) at a rotating speed of 2000rpm / min, stirred until the solid was completely dissolved, and the solution was a yellow transparent liquid, A polyvinyl alcohol solution with a mass fraction of 25% was obtained.

[0026] Under the conditions of room temperature of 25°C and humidity of 30%, the polyvinyl alcohol solution with a mass fraction of 25% was input to the spinneret of the self-cleaning multi-nozzle matrix array spinneret 3 through the liquid supply device 1 at a flow rate of 6mL / h At the same time, the spinneret is connected to the high-voltage electrostatic generator 6 of 60 kV to carry out electrospinning, and the spun silk is received with a layer of copper mesh of the base material placed on the drum of the receiving device 7 and then covered with a layer of copper mesh, The vertical distance a between th...

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Abstract

The invention provides a preparation method of nanometer cobweb / nanometer fiber composite protective material, which is characterized by comprising the specific steps of: I, using macromolecule for stirring and dissolving or dispersing spinning into a solvent to obtain an electric spinning material with a weight percentage of 5 to 30 percent; II, inputting the electric spinning material obtained in step I onto a spinneret at a flow speed of 0.1-10mL / h at the room temperature and humidity not more than 30 percent and simultaneously connecting the spinneret with a 10-80 kv power to conduct static spinning; using a layer of base materials to receive the spun threads, covering a layer of top materials on the threads, and then conducting hot-pressing on the threads to obtain the nanometer cobweb / nanometer fiber multi-layer composite protective material with an aperture of 10-80 nanometer and an average diameter of 15 nanometer. The material can be effectively used for preventing the viruses with diameters between 80 and 120 nanometers of H1N1 influenza A, bird flu, equine influenza, SARS pathogene and the like.

Description

technical field [0001] The invention relates to a preparation method of a nano spider web / nano fiber composite protective material, which belongs to the field of new materials. Background technique [0002] The existing nano-protective materials have the disadvantages of large fiber straight diameter, large pore size between fibers, and poor protection and antibacterial effects. Through the national patent literature search, it is known that in order to enhance the filtering effect of nano-protective materials on viruses and solid particles, Chinese patents CN 03131586.0 and CN 200810042074.6 use additives and antibacterial agents in the formation process of nano-protective materials to enhance the materials to viruses and solid particles. The adsorption of particles can improve the protective effect of nanomaterials, but the addition of additives and antibacterial agents is not conducive to the formation of fibers during electrospinning. The existing nano protective materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/02B32B37/00D01D5/00
Inventor 丁彬毛雪林金友俞建勇孙刚
Owner DONGHUA UNIV
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