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A kind of crystalline polyaryletherketone nanofiber film, preparation method and application thereof

A nanofiber membrane, polyaryletherketone technology, applied in the direction of fiber processing, fiber type, fiber chemical characteristics, etc., can solve the problems of affecting comprehensive performance, solvent resistance and high temperature, and polymer losing polyetheretherketone crystallinity. , to achieve the effect of simple and easy preparation process, low cost of raw materials and excellent mechanical properties

Active Publication Date: 2022-01-21
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method not only needs to be carried out at high temperature, which increases the process cost and operational difficulty, it is difficult to control the fiber diameter and porosity, and it is even more unfavorable that compared with the electrospun polyether ether ketone nanofiber membrane in the present invention , the obtained polymer loses the original crystallinity of polyetheretherketone
According to the theory of polymer physics, the higher the symmetry of the molecule, the easier it is to form crystals, and the existence of the methyl structure of the side chain of the polymer in this invention makes it asymmetric, so the nanofiber membrane prepared by it does not have crystallinity. Not resistant to solvents and high temperatures, which will affect the overall performance in practical applications

Method used

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  • A kind of crystalline polyaryletherketone nanofiber film, preparation method and application thereof
  • A kind of crystalline polyaryletherketone nanofiber film, preparation method and application thereof
  • A kind of crystalline polyaryletherketone nanofiber film, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Dissolve the soluble polyetheretherketone precursor: polyetheretherketone-1,3-dioxolane (see literature [1,2] for its preparation method) (1.0g) in the polar polymer good solvent NMP (4mL) , the mass concentration of the solution is 20%, and it is airtightly stirred at room temperature for 15 hours to prepare a clear and transparent spinning solution; the spinning solution is installed in the syringe of the electrospinning device, the needle of the syringe is connected to the positive electrode of the high-voltage power supply, and the aluminum foil receives the The plate is connected to the negative electrode of the high-voltage power supply for spinning, and the prepared nanofiber film is formed on the aluminum foil receiving plate; the distance between the needle of the syringe and the upper surface of the aluminum foil receiving plate is 15cm, the applied voltage is 15kV, and the advancing speed of the syringe is 0.2mL / h . The obtained nanofibrous membrane was soake...

Embodiment 2

[0038]The preparation process of the crystalline polyether ether ketone nanofiber membrane described in Example 1 is the same, except that the prepared crystalline polyether ether ketone nanofiber membrane is assembled into a supercapacitor according to the literature [4] for cyclic voltammetry curve test, using Electrochemical workstation (CHI 660A) in the voltage range of 0.0 ~ 3.0V, the scan rate is 5 mV s -1 , Tested at ambient temperature.

[0039] The SEM picture of the polyether ether ketone nanofiber membrane obtained by reducing polyetheretherketone-1,3-dioxolane prepared in Example 2 is shown in the appendix image 3 ; the figure demonstrates the successful preparation of nanofiber membranes in which the fiber diameter is 110 nm and the thickness of the membrane is 10 μm. The linear sweep voltammetry curves of the supercapacitor conventional gel electrolyte (GPE-20) and cross-linked gel electrolyte (NGPE-CL-20) prepared in Example 2 are shown in the appendix Image...

Embodiment 3

[0041] The preparation process of the crystalline polyether ether ketone nanofiber membrane described in Example 1 is the same, except that the prepared crystalline polyetheretherketone nanofiber membrane is assembled into a lithium-ion button battery according to the literature [5] to test the cycle performance, Using a potentiostat (Solartron Analytical) to test under the conditions of 3C and 55°C.

[0042] The SEM picture of the polyether ether ketone nanofiber membrane obtained by reducing polyetheretherketone-1,3-dioxolane prepared in Example 3 is shown in the appendix image 3 ; the figure demonstrates the successful preparation of nanofiber membranes in which the fiber diameter is 110 nm and the thickness of the membrane is 10 μm. The rate performance of the prepared lithium-ion battery separator (PEEK) and commercial lithium-ion battery separator (Cel 2325) in Example 3 is shown in the attached Figure 7 ; This figure shows that cells assembled with PEEK membranes hav...

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Abstract

A crystalline polyaryletherketone nanofiber membrane, a preparation method and an application thereof belong to the technical field of electrospinning. The present invention utilizes electrospinning technology to prepare crystalline polyaryletherketone nanofiber membrane by using soluble polyaryletherketone-polyaryletherketone-1,3-dioxolane or polyaryletherketone imine solution. The method of the invention is simple to operate, does not require external additives, is low in cost, and can be produced on a large scale. Heat resistance, radiation resistance, chemical corrosion resistance, fatigue resistance, impact resistance, creep resistance, wear resistance, good flame retardancy and excellent mechanical properties. The crystalline polyaryletherketone nanofiber membrane prepared by the invention has controllable fiber diameter and thickness, does not need external additives and high temperature treatment, can be used normally under severe conditions, and can be used in fuel cells, supercapacitors and lithium-ion batteries Applied in.

Description

technical field [0001] The invention belongs to the technical field of electrospinning, and in particular relates to a crystalline polyaryletherketone nanofiber membrane, a preparation method and an application thereof. Background technique [0002] Electrospinning technology has become an important means of preparing nanofiber materials due to the advantages of simple equipment, low cost, and mature technology. Not only most polymers can be prepared into nanofibers by electrospinning, but also composites such as inorganic, organic and inorganic substances can also be prepared into nanofiber aggregates by electrospinning. This nanofiber preparation process with strong adaptability, controllable fiber structure and simple operation is widely used in the fields of biomedicine, filtration, protection, catalysis, electronic devices and textiles. [0003] Polyaryletherketone is a kind of semi-crystalline, thermoplastic high-performance polymer. The main chain is composed of ethe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4326D06C7/00H01G11/52H01M50/44H01M50/411H01M50/403H01M8/0221D06M11/11D01F6/66D06M101/30
CPCD04H1/728D04H1/4326D06C7/00D06M11/11D01F6/665H01M8/0221H01G11/52D06M2101/30H01M50/411H01M50/44Y02E60/13Y02P70/50Y02E60/50Y02E60/10
Inventor 王贵宾张重阳杨砚超栾加双张淑玲张梅
Owner JILIN UNIV
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