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Preparation method of phosphorylated sulfonated polyether ether ketone and silica nanoparticle electrospun membrane

A technology of phosphorylated sulfonated polyether and sulfonated polyether ether ketone, which is applied in the direction of textiles, papermaking, nonwovens, etc., and can solve the problems that the compatibility needs to be improved.

Active Publication Date: 2021-04-30
SHANDONG XINGHUO SCI TECH INSTITYTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with polymer membranes, the addition of inorganic particles can improve the separation performance of hybrid membranes, but the compatibility between inorganic particles and polymer materials needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Add sulfonated polyether ether ketone to N,N'-dimethylformamide, stir and disperse evenly, the concentration is 18wt%, add chloromethyl octyl ether and stir for 2 hours, sulfonated polyether ether ketone and chloroform The mass ratio of octyl ether is 3:25. After the reaction, pour the solution into ice water, filter it with suction, wash it repeatedly with deionized water until it is neutral, and then wash the product several times with ethanol to remove the chloromethyloctyl group. Ether, vacuum-dried at 40°C for 24 hours to obtain chloromethylated sulfonated polyether ether ketone;

[0021] 2) Dissolve chloromethylated sulfonated polyetheretherketone in NMP, prepare a dispersion with a concentration of 2wt%, add triethyl phosphite, triethyl phosphite and chloromethylated sulfonated polyether ether The mass ratio of ketones is 4:3, react at 110°C for 10 hours, distill under reduced pressure to remove residual triethyl phosphite, wash the product repeatedly with dei...

Embodiment 2

[0027] 1) Add sulfonated polyether ether ketone into dimethyl sulfoxide, stir and disperse evenly, the concentration is 10wt%, add chloromethyl octyl ether and stir for reaction for 1 hour, the mixture of sulfonated polyether ether ketone and chloromethyl octyl ether The mass ratio is 2:20. After the reaction, pour the solution into ice water, filter it with suction, wash it repeatedly with deionized water until it is neutral, and then wash the product several times with ethanol to remove chloromethyl octyl ether. Dry for 24 hours to obtain chloromethylated sulfonated polyetheretherketone;

[0028] 2) Dissolve chloromethylated sulfonated polyetheretherketone in NMP, prepare a dispersion with a concentration of 1wt%, add triethyl phosphite, triethyl phosphite and chloromethylated sulfonated polyether ether The mass ratio of ketone is 3:2, react at 120°C for 10 hours, distill under reduced pressure to remove residual triethyl phosphite, wash the product repeatedly with deionized...

Embodiment 3

[0034] 1) Add sulfonated polyether ether ketone into absolute ethanol, stir and disperse evenly, the concentration is 20wt%, add chloromethyl octyl ether, stir and react for 1.5h, the mass of sulfonated polyether ether ketone and chloromethyl octyl ether The ratio is 1:30. After the reaction, pour the solution into ice water, filter it with suction, wash it repeatedly with deionized water until neutral, then wash the product several times with ethanol to remove chloromethyl octyl ether, and dry it in vacuum at 40°C. After 24 hours, chloromethylated sulfonated polyether ether ketone was obtained;

[0035] 2) Dissolve chloromethylated sulfonated polyetheretherketone in NMP, prepare a dispersion with a concentration of 3wt%, add triethyl phosphite, triethyl phosphite and chloromethylated sulfonated polyether ether The mass ratio of ketones is 5:2, react at 100°C for 10 hours, distill under reduced pressure to remove residual triethyl phosphite, wash the product repeatedly with de...

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Abstract

The present invention relates to a preparation method of electrospinning film of phosphorylated sulfonated polyether ether ketone and silica nanoparticles. The spinning film improves the compatibility of silica nanoparticles and sulfonated polyetheretherketone, improves the stability of the composite membrane, has good proton conductivity, and can be used for fuel cell proton exchange membranes.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a preparation method of phosphorylated sulfonated polyetheretherketone and silicon dioxide nanoparticle electrospun membrane. Background technique [0002] The proton exchange membrane is one of the core components of the proton exchange membrane fuel cell and the direct alcohol fuel cell. Protons, the higher the proton conductivity, the smaller the internal resistance of the membrane, and the higher the efficiency of the fuel cell; (3) The electrical insulator prevents the conduction of electrons in the membrane, and the electrons flow from the anode to the cathode through the external line to generate an external current for people use. Generally, PEM materials for fuel cells must meet the following requirements: (1) low cost; (2) high proton conductivity; (3) good mechanical strength (anti-swelling) and dimensional stability; (4) excellent chem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4326C08G8/28
Inventor 车春玲
Owner SHANDONG XINGHUO SCI TECH INSTITYTE