Crystalline polyaryletherketone porous membrane with adjustable pore diameter, preparation method and application of membrane

A technology of polyaryletherketone and polyaryletherketoneimine, which is applied in the field of preparation of crystalline polyaryletherketone porous membranes, can solve the problem of affecting comprehensive performance, unstable diluent, and loss of crystallinity of polyetheretherketone in polymers and other problems, to achieve the effect of simple and easy preparation process, recyclable raw material cost and excellent mechanical properties

Active Publication Date: 2019-08-09
JILIN UNIV
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent (CN101234304A) discloses a polyether ether ketone porous membrane prepared by a thermally induced phase separation method: mix polyether ether ketone with a diluent, and form a porous structure by high-temperature dissolution and low-temperature phase separation. However, this method requires It is carried out at high temperature and requires a high-temperature-resistant diluent. Compared with the immersion phase inversion method and the steam-induced phase inversion method in the present invention, the process cost and operational difficulty are increased, and some diluents are not stable at high temperatures, affecting craft effect
Chinese patent (CN103816820A) discloses a preparation method of a semi-crystalline polyetheretherketone porous membrane: polyetheretherketone and polyetherimide are blended and extruded to form a film, and then the polyetherimide is dissolved and removed to obtain Polyetheretherketone porous membrane, this method also needs to be carried out at high temperature, and it is necessary to select a suitable pore-forming agent. Compared with the immersion phase inversion method and the steam-induced phase inversion method in the present invention, the process cost and operation are increased. Difficulty, and limited by the content and dispersion sta...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Crystalline polyaryletherketone porous membrane with adjustable pore diameter, preparation method and application of membrane
  • Crystalline polyaryletherketone porous membrane with adjustable pore diameter, preparation method and application of membrane
  • Crystalline polyaryletherketone porous membrane with adjustable pore diameter, preparation method and application of membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Dissolve the soluble polyether ether ketone precursor—polyether ether ketone-1,3-dioxolane (see literature [1, 2] for the 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 casting solution; pour the casting solution on the surface of a horizontal glass plate, spread it evenly with a scraper, and then place it in a constant humidity box 10 minutes, and then made a polymer porous membrane; soak the obtained polymer porous membrane in deionized water for 50 hours, take it out and dry it at 80°C under vacuum, remove the residual polymer polar good solvent and place it in Soak in hydrochloric acid for 28 hours, take it out, rinse with deionized water, remove excess acid, and then dry it at 60°C under vacuum to obtain a polyetheretherketone porous membrane with adjustable pore size; the polyetheretherketone porou...

Embodiment 2

[0057] The preparation process of the crystalline polyetheretherketone porous membrane described in Example 1 is the same, and the DSC curve of the prepared crystalline polyaryletherketone porous membrane with adjustable pore size is similar to that of Example 1, and its crystallinity is 27%. , the pore diameter is 3 μm, the porosity is 80%, the pore morphology is sponge-like pores, and the thickness is 10 μm. Then, the prepared crystalline polyetheretherketone porous membrane was assembled into a supercapacitor according to the literature [4] for cyclic voltammetry curve test, using an electrochemical workstation (CHI 660A) in the voltage range of 0.0-3.0V, and the scan rate was 5mV s -1 , Tested at ambient temperature.

[0058] 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 Figure 8 ; The figure shows that both NGPE-CL-20 and GPE-2...

Embodiment 3

[0060] The same as in Example 1, except that the pore forming agent dibutyl phthalate (0.9g) was added to the casting solution, the ratio of its mass dosage to the polymer was 0.9:1, and the stirring was continued for 5 hours to make the pore forming agent Disperse evenly in the polymer solution; pour the casting solution with the porogen added on the surface of a horizontal glass plate, place it in an oven at 60°C, 80°C, and 100°C for 12 hours each, and then dry it in vacuum at 120°C for 12 hours. Solvent was completely removed. After taking out the membrane, place the membrane in a Soxhlet extractor, extract it with ethanol for 8 hours, and dry it in vacuum at 60°C for 12 hours to obtain a polymer porous membrane; soak the obtained polymer porous membrane in hydrochloric acid for 28 hours, take it out and use deionized Rinse with water to remove excess acid, then dry at 60°C under vacuum to obtain a polyether ether ketone porous membrane with adjustable pore size; heat-treat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Power densityaaaaaaaaaa
Apertureaaaaaaaaaa
Login to view more

Abstract

The invention discloses a crystalline polyaryletherketone porous membrane with an adjustable pore diameter, a preparation method and application of the membrane, and belongs to the technical field ofpolymer materials. A soluble polyaryletherketone precursor solution is prepared into a porous membrane by means of an immersion phase inversion method or a steam induction phase inversion method or atemplate method, then the porous membrane is crystallized through acidification and heat treatment, and therefore the crystalline polyaryletherketone porous membrane with the adjustable pore diameteris prepared. The crystallinity of the crystalline polyaryletherketone porous membrane with the adjustable pore diameter is 26-29%, the pore diameter of the membrane is within the range of 0.01-5 microns, the porosity of the membrane is 50-80%, pores are finger-shaped pores or sponge-shaped pores, and the thickness is 10-130 microns. The operation of the method is simple, the cost is low, large-scale production can be achieved, the immersion phase inversion method and the steam induction phase inversion method do not require external auxiliaries, the process cost is further reduced, and the crystalline polyaryletherketone porous membrane can be widely applied to fuel cells, super capacitors, lithium ion batteries, ultrafiltration membranes and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a crystalline polyaryletherketone porous membrane with adjustable aperture, a preparation method and its application in fuel cells, supercapacitors, lithium ion batteries and ultrafiltration membranes. Background technique [0002] High-performance membrane materials are the core materials of the contemporary chemical industry. They are strategic materials for solving water resources, energy, environmental problems and traditional industrial technologies. They have been widely used in important fields such as water resources, energy, environment, traditional industries and national defense. Compared with traditional materials, it has the characteristics of high efficiency, low energy consumption, simple operation and environmental friendliness, and is easy to integrate with other technologies to play a role, showing huge advantages. [0003] Polyaryletherket...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08J5/22B01D71/72B01D69/02B01D67/00B01D61/14H01M2/16H01G11/52
CPCC08J5/2256B01D71/72B01D69/02B01D67/0079B01D61/145H01G11/52H01M50/411Y02E60/13Y02E60/10
Inventor 王贵宾张重阳杨砚超栾加双张淑玲张梅
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap