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Preparation method of functional PU-AOPAN (polyurethane-amidoximepolyacrylonitrile) composite nanofiber membrane

A composite nanofiber, functional technology, applied in fiber processing, conjugated synthetic polymer artificial filament, non-woven fabrics, etc., can solve the problems of rapid development and achieve good fiber shape, small fiber diameter, and high porosity Effect

Inactive Publication Date: 2017-03-08
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a simple new technology for preparing ultrafine fibers, electrospinning has gradually attracted people's attention in recent years, but it has developed rapidly.

Method used

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  • Preparation method of functional PU-AOPAN (polyurethane-amidoximepolyacrylonitrile) composite nanofiber membrane
  • Preparation method of functional PU-AOPAN (polyurethane-amidoximepolyacrylonitrile) composite nanofiber membrane
  • Preparation method of functional PU-AOPAN (polyurethane-amidoximepolyacrylonitrile) composite nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. First, put 0.22g of polyurethane (PU) and 1.98g of dried polyacrylonitrile (PAN) powder into a 50ml Erlenmeyer flask, and then add 17.8g of N,N-dimethylformaldehyde Amide solvent (DMF). The Erlenmeyer flask was placed in a constant temperature water bath at 40°C, and magnetically stirred until it was completely dissolved to prepare a PU-PAN composite spinning solution with a total mass fraction of 11% (the mass ratio of PU to PAN was 1:9).

[0031] 2. Use an electrospinning device to perform electrospinning, polish the syringe needle (0.7 mm in diameter) to be smooth and smooth, and add the PU-PAN spinning solution prepared above into the syringe. The positive terminal of the high-voltage power supply is connected to the needle of the syringe, and the receiving device (drum) is grounded. Under room temperature conditions, the injection flow rate of the injector was set at 0.2ml / h, the applied voltage was 18kV, and the distance between the needle and the receiving el...

Embodiment 2

[0034] 1. First, put 0.48g of polyurethane (PU) and 1.92g of dried polyacrylonitrile (PAN) powder into a 50ml conical flask, and then add 17.6g of N,N-dimethylformaldehyde Amide solvent (DMF). Place the Erlenmeyer flask under a constant temperature water bath at 40°C, and magnetically stir until completely dissolved to prepare a PU-PAN composite spinning solution with a total mass fraction of 12% (the mass ratio of PU to PAN is 2:8).

[0035]2. Use an electrospinning device to perform electrospinning, polish the syringe needle (0.7 mm in diameter) to be smooth and smooth, and add the PU-PAN spinning solution prepared above into the syringe. The positive terminal of the high-voltage power supply is connected to the needle of the syringe, and the receiving device (drum) is grounded. Under room temperature conditions, the injection flow rate of the injector was set at 0.5 ml / h, the applied voltage was 19 kV, and the distance between the needle and the receiving electrode was 20 ...

Embodiment 3

[0038] 1. First, put 0.6g of polyurethane (PU) and 1.4g of dried polyacrylonitrile (PAN) powder into a 50ml Erlenmeyer flask, and then add 18g of N,N-dimethylformamide solvent (DMF). Place the Erlenmeyer flask under a constant temperature water bath at 40°C and magnetically stir until completely dissolved to prepare a PU-PAN composite spinning solution with a total mass fraction of 10% (wherein the mass ratio of PU to PAN is 3:7).

[0039] 2. Use an electrospinning device to perform electrospinning, polish the syringe needle (0.7 mm in diameter) to be smooth and smooth, and add the PU-PAN spinning solution prepared above into the syringe. The positive terminal of the high-voltage power supply is connected to the needle of the syringe, and the receiving device (drum) is grounded. Under room temperature conditions, the injection flow rate of the injector was set at 0.8ml / h, the applied voltage was 20kV, and the distance between the needle and the receiving electrode was 18cm. ...

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Abstract

The invention discloses a preparation method of a functional PU-AOPAN (polyurethane-amidoximepolyacrylonitrile) composite nanofiber membrane, comprising the steps of first, dissolving PU and PAN in an electrostatic spinning polar organic solvent, preparing electrostatic spinning solution with PU and PAN accounting for 8-12% by weight of total weight, and preparing a PU-PAN composite nanofiber membrane by electrostatic spinning process; second, subjecting the PU-PAN composite nanofiber membrane to amidoximation modification to obtain the PU-AOPAN composite nanofiber membrane. The defects are improved that PAN and PU are poor in hydrophilic performance and have few surface functional groups; the PU ingredient is introduced to functional nanofiber, the mechanical properties of amidoximepolyacrylonitrile are greatly improved, and the practical applicability of amidoximepolyacrylonitrile can be greatly enhanced.

Description

technical field [0001] The invention belongs to the technical field of nanofiber membrane preparation, and in particular relates to a preparation method of a functional PU-AOPAN composite nanofiber membrane. Background technique [0002] Polyurethane (PU) is a block copolymer composed of macromolecular polyol as soft segment, isocyanate and chain extender as hard segment, and is an organic polymer material with good spinnability. Due to the multiple bending and folding structure of the polyurethane macromolecular chain, it endows the polyurethane with excellent properties such as wear resistance, flexibility, elasticity and resilience. In actual industrial production, usually adding an appropriate amount of polyurethane material in the preparation process of the material can greatly improve the mechanical properties of the material and enhance its practical use ability in industrial applications. The PU-based composite nanofiber prepared by electrospinning not only has the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/63D01F8/16D01F8/08D04H1/728D01D5/00D06M101/28D06M101/38
CPCD06M11/63D01D5/003D01D5/0069D01D5/0076D01D5/0092D01F8/08D01F8/16D04H1/728D06M2101/28D06M2101/38
Inventor 武丁胜凤权侯大寅魏安静桓珊
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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