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A surface sulfonated polyetheretherketone micro-nano particle/sulfonated polyetheretherketone composite film and its preparation method

A technology of sulfonated polyether ether ketone and micro-nano particles, applied in the field of polymer materials, can solve the problems of loss of mechanical properties of membrane materials, deterioration of dimensional stability of membrane materials, etc.

Active Publication Date: 2019-07-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the introduction of sulfonic acid groups, the membrane material has poor dimensional stability
For example, the sulfonated polyetheretherketone material exhibits extremely high water swelling at high sulfonation degrees, and loses the mechanical properties of the membrane material

Method used

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  • A surface sulfonated polyetheretherketone micro-nano particle/sulfonated polyetheretherketone composite film and its preparation method
  • A surface sulfonated polyetheretherketone micro-nano particle/sulfonated polyetheretherketone composite film and its preparation method
  • A surface sulfonated polyetheretherketone micro-nano particle/sulfonated polyetheretherketone composite film and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of surface sulfonated polyetheretherketone micro-nanoparticles on the scale of 1 micron: add 300mL of dichloromethane and 0.3g of chlorosulfonic acid into a 500mL three-necked bottle, stir well and add 10g of polyether ether with an average particle size of 1 micron Ketone particles (purchased from Jida Special Plastic Engineering Research Co., Ltd., melt index 10g / 10min), stirred at room temperature for 5 minutes, filtered and washed the obtained solids, repeated filtering and washing operations 4 times, stirring and washing for 1 hour each time, and finally filtered again Finally, the solid matter was dried at 120° C. to obtain surface sulfonated polyether ether ketone micro-nano particles with a yield of 99%. Although the particle surface is sulfonated, the polyether ether ketone particles still maintain the original crystalline structure. From figure 1 It can be seen from the DSC curve that the polymer particles still have the melting point and crystall...

Embodiment 2

[0022] Preparation of sulfonated polyetheretherketone micro-nanoparticles on the surface of 1 micron scale: add 300mL chloroform and 0.3g chlorosulfonic acid to a 500mL three-neck flask respectively, stir well and add 10g polyether ether ketone with an average particle size of 1 micron Particles (purchased from Jida Special Plastic Engineering Research Co., Ltd., melt index 10g / 10min), stirred at room temperature for 5 minutes, filtered and washed the obtained solids, repeated filtering and washing operations 4 times, stirring and washing for 1 hour each time, and finally filtered again Dry the solid at 120° C. to obtain surface sulfonated polyether ether ketone micro-nano particles with a yield of 99%.

Embodiment 3

[0024] By changing the particle size of the polyether ether ketone particles in Example 1, from 1 nanometer scale to 20 micron scale, surface sulfonated polyetheretherketone micro-nano particles can be obtained.

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Abstract

The invention relates to a sulfonated polyether ether ketone micro nanoparticle / sulfonated polyether ether ketone composite membrane, and a preparation method thereof, and belongs to the technical field of a high molecular material. By starting from the improvement on the dry and wet state dimension stability of a sulfonated polyether ether ketone membrane, polyether ether ketone micro nanoparticles are used as raw materials; interface reaction is firstly used to prepare sulfonated polyether ether ketone micro nanoparticles; then, sulfonated polyether ether ketone micro nanoparticle / sulfonated polyether ether ketone blended slurry is prepared by a solution blending method; finally, the sulfonated polyether ether ketone micro nanoparticle / sulfonated polyether ether ketone composite membrane is prepared by a solution casting method. The composite membrane has excellent swelling resistant performance and high-proton conduction. Through SEM analysis, the condition that sulfonated polyether ether ketone base resin and the surface sulfonated polyether ether ketone micro nanoparticles are tightly combined is shown. After the sulfonated polyether ether ketone micro nanoparticles are doped, high proton conductivity is shown; the conductivity is improved along with the increase of the sulfonation degree.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a surface sulfonated polyether ether ketone micro-nano particle / sulfonated polyether ether ketone composite membrane and a preparation method thereof. Background technique [0002] Because of its excellent heat resistance, good chemical stability and excellent mechanical properties, polyether ether ketone is considered as a special engineering plastic with excellent comprehensive properties. In particular, the polyetheretherketone resin has a phenylene ether structure, which makes it easy to modify the polyetheretherketone. For example, sulfonated PEEK resin is a modified PEEK material. Because the sulfonic acid group is introduced into the molecular structure of polyether ether ketone, it endows the material with ion transport and water transport properties. Therefore, the sulfonated polyether ether ketone has broad application prospects in the fields of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L61/16C08G8/28
CPCC08G8/28C08J5/18C08J2361/16C08J2461/16C08L61/16C08L2203/16C08L2205/025
Inventor 庞金辉董波关绍巍姜振华张海博
Owner JILIN UNIV
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