Crystalline polyaryletherketone nanofiber membrane and preparation method and application thereof

A nanofiber membrane, polyaryletherketone technology, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problem of difficult to control fiber diameter and porosity, polymer loss of polyetheretherketone crystallinity, and increase process cost. and operation difficulty, etc., to achieve the effects of low cost of raw materials, excellent mechanical properties, and simple and easy preparation process.

Active Publication Date: 2019-08-30
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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  • Crystalline polyaryletherketone nanofiber membrane and preparation method and application thereof
  • Crystalline polyaryletherketone nanofiber membrane and preparation method and application thereof
  • Crystalline polyaryletherketone nanofiber membrane and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

Embodiment 2

[0038] The preparation process of the crystalline polyetheretherketone nanofiber membrane described in Example 1 is the same, except that the prepared crystalline polyetheretherketone nanofiber membrane is assembled into a supercapacitor for cyclic voltammetric curve test according to document [4]. The electrochemical workstation (CHI 660A) is in the voltage range of 0.0~3.0V, and the scan rate is 5 mV s -1 , Test at ambient temperature.

[0039] The SEM picture of the polyetheretherketone nanofiber membrane obtained by the reduction of polyetheretherketone-1,3-dioxolane prepared in Example 2 is attached. image 3 The figure shows the successful preparation of nanofiber membranes, where the fiber diameter is 110nm and the membrane thickness is 10μm. The linear sweep voltammetry curves of the conventional gel electrolyte (GPE-20) and cross-linked gel electrolyte (NGPE-CL-20) of the supercapacitor prepared in Example 2 are shown in the attachment Image 6 ; The figure shows that bot...

Embodiment 3

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

[0042] The SEM picture of the polyetheretherketone nanofiber membrane obtained by the reduction of polyetheretherketone-1,3-dioxolane prepared in Example 3 is attached. image 3 The figure shows the successful preparation of nanofiber membranes, where the fiber diameter is 110nm and the membrane thickness is 10μm. The rate performance of the lithium ion battery separator (PEEK) prepared in Example 3 and the commercial lithium ion battery separator (Cel 2325) is shown in the attachment Figure 7 The figure shows that the battery assembled with polyetheretherketone membrane has better rate performance than commercial...

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Abstract

The invention discloses a crystalline polyaryletherketone nanofiber membrane and a preparation method and application thereof and belongs to the technical field of electrostatic spinning. According tothe method, an electrostatic spinning technology is utilized, and a soluble polyaryletherketone-polyaryletherketone-1,3-dioxolame or polyaryletherketone imine solution is adopted for preparing the crystalline polyaryletherketone nanofiber membrane. The method has the advantages that the operation is simple, there is no need to adopt external aids, the cost is low, large-scale production can be achieved, the limit caused by the insolubility of polyaryletherketone in an organic solvent to a processing method is broken through, and the excellent heat resistance, radiation resistance, chemical corrosion resistance, fatigue resistance, impact resistance, creep resistance, wear resistance, flame retardance and mechanical property of crystalline polyaryletherketone are retained. The crystallinepolyaryletherketone nanofiber membrane prepared by means of the method is controllable in fiber diameter and thickness, does not require the external aids and high-temperature treatment, can be normally used under severe conditions and can be applied into fuel cells, super capacitors and lithium ion batteries.

Description

Technical field [0001] The invention belongs to the technical field of electrostatic spinning, and specifically 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 its simple equipment, low cost, and mature technology. Not only can most polymers be prepared into nanofibers by electrostatic spinning, but also inorganic, organic and inorganic compounds can also be prepared into nanofiber aggregates by electrostatic spinning. 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] Polyaryl ether ketone is a kind of semi-crystalline, thermoplastic, high-performance polymer. The main chain is composed of ether bonds, carbonyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4326D06C7/00H01G11/52H01M2/16H01M8/0221D06M11/11D01F6/66D06M101/30
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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