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Nanofiber membrane, composite nanofiber filtering membrane, nanomembrane filter screen and preparation

A technology of composite nanofiber and nanofiber membrane, which is applied in the field of sterilization, antivirus and air purification

Pending Publication Date: 2021-09-28
HANGZHOU LONG BEACH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this nanofiber membrane can only play the role of filtering particulate matter. Due to the urgency of sterilization and antivirus in the cu

Method used

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  • Nanofiber membrane, composite nanofiber filtering membrane, nanomembrane filter screen and preparation
  • Nanofiber membrane, composite nanofiber filtering membrane, nanomembrane filter screen and preparation
  • Nanofiber membrane, composite nanofiber filtering membrane, nanomembrane filter screen and preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] First of all, Example 1 of the present invention provides a nanofiber membrane, which is obtained by electrospinning the electrospinning solution. The specific operation steps: Step 1. Take the solvent formic acid 30% mass fraction, acetic acid 59.6% mass fraction and mix them at 40 Stir in a water bath at ℃, weigh 10% of the polymer solute PA66, pour it into the above mixed solvent, heat and stir evenly for 4 hours; step 2. After the mixed solvent completely dissolves the polymer solute PA66 to obtain a solution, keep away from light and weigh Add nano-silver particles with a mass fraction of 0.2% to the above-mentioned solution that is uniformly stirred, and use an ultrasonic oscillator to sufficiently avoid light and ultrasonically stir for 6 hours at room temperature; step 3. After the solution in the above step 2 is stirred evenly, weigh the mass in the dark The fraction is 0.2% nano-copper particles are added and stirred evenly, and an ultrasonic oscillator is used...

Embodiment 2

[0040] This embodiment 2 first provides a nanofiber membrane, which is obtained by electrospinning the electrospinning solution. The specific operation steps are as follows: Step 1. Take the solvent DMF (N,N-dimethylformamide) with a mass fraction of 83 %, stir in a water bath at 80°C, then weigh 15% of the polymer solute PVDF mass fraction, pour it into the above solvent, heat and stir evenly for 8 hours; step 2. After the solvent completely dissolves the solute evenly, obtain a solution, and weigh Add nano-silver particles with a mass fraction of 1% to the above-mentioned solution that is uniformly stirred, and use an ultrasonic oscillator to sufficiently avoid light and ultrasonically stir for 8 hours at room temperature; In the above step 2, use an ultrasonic oscillator to sufficiently avoid light and ultrasonically stir for 8 hours at room temperature; step 4. Put the uniformly stirred solution in the above step 3 to defoam for 8 hours to obtain an electrospinning solution...

Embodiment 3

[0043] This Example 3 is substantially the same as Example 1, except that the raw material ratio of the electrospinning solution used to prepare the nanofiber membrane is different. Specifically, in this Example 3, the specific operation steps: 1. Take the solvent formic acid 28 % mass fraction, 53% mass fraction of acetic acid, stirred in a 60°C water bath to obtain a mixed solvent, then weighed 15% of the polymer solute PA66 mass fraction, poured into the above mixed solvent, heated and stirred evenly for 6h; 2. The mixed solvent was After the solute is completely dissolved and uniform, the solution is obtained, and the nano-silver particles with a mass fraction of 2% are weighed in the dark and added to the uniformly stirred solution, and the ultrasonic oscillator is used to fully avoid light and ultrasonically stir for 8 hours at room temperature; 3. Wait for the above step 2 After the solution is evenly stirred, add nano-copper particles with a mass fraction of 2% in the d...

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Abstract

The invention provides a nanofiber membrane, a composite nanofiber filter membrane, a nanomembrane filter screen and preparation. The nanomembrane filter screen is prepared from the composite nanofiber filter membrane through slitting, transverse beating, folding and cutting. The composite nanofiber filtering membrane is obtained by compounding the nanofiber membrane with a base material supporting layer and a base material protecting layer, wherein the nanofiber membrane is obtained through electrostatic spinning of an electrostatic spinning solution, the electrostatic spinning solution comprises a solution polymer with the mass fraction of 96%-99.6%, and the electrostatic spinning solution further comprises nano-silver with the particle size of 40-200 nm and with the mass fraction of 0.2%-2%, nano-copper with the particle size of 40-200 nm and with the mass fraction of 0.2%-2%. The prepared nanomembrane filter screen also has strong bactericidal and antiviral effects.

Description

technical field [0001] The invention relates to the technical field of antibacterial and antiviral air purification, in particular to a nanofiber membrane with antibacterial and antiviral functions prepared by electrospinning technology, a composite nanofiber filter membrane, a nanomembrane filter net and its preparation. Background technique [0002] Nowadays, antibacterial and antiviral materials have become the mainstream of the market. Traditional nanofiber membranes can only filter particulate matter. Traditional nanofiber membranes are made by spinning polymer solutions on the substrate support layer with an electrospinning machine, and then combined with The substrate protective layer is obtained by compounding. However, this nanofiber membrane can only play the role of filtering particulate matter. Due to the urgency of sterilization and antivirus in the current environment, nanofiber membranes with antibacterial and antiviral functions and filter screens thereof are...

Claims

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Application Information

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IPC IPC(8): B01D69/08B01D67/00B01D69/12B01D39/16D04H1/728D01F1/10D01F6/48D01F6/90
CPCB01D69/08B01D69/087B01D67/0002B01D69/12B01D39/1623D01F1/103D01F6/90D01F6/48B01D2323/39B01D2325/48B01D2239/10B01D2239/0442
Inventor 闫晓宇黄俊张维
Owner HANGZHOU LONG BEACH TECH CO LTD
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