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Diaphragm cloth for water electrolyzer and production method thereof

A technology of water electrolysis cell and production method, which is applied in physical treatment, textile, liquid/gas/steam textile material treatment, etc., and can solve problems such as long cleaning time, poor hydrophilicity of diaphragm cloth, complicated process operation, etc.

Active Publication Date: 2019-01-04
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively strong liquid absorption rate of the nonwoven fabric, the invention needs to consume a lot of precious water resources and chemicals in the cleaning process after strong acid treatment, and the cleaning time is also long, and the process operation is complicated, which is easy to pollute the environment.
At the same time, the safety is also poor, and it is not suitable for industrial production
[0005] Another example is the Chinese published patent CN101195944 which discloses a woven fabric made of one, two or three of polyetheretherketone fiber, polyphenylene sulfide fiber and polypropylene fiber as a non-asbestos environment-friendly and energy-saving fabric. Diaphragm cloth, although the airtightness of the diaphragm cloth meets the standard requirements for asbestos diaphragms, but due to the poor water absorption of the above chemical fibers, the resulting diaphragm cloth has poor hydrophilicity and cannot really meet the use requirements

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
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  • Diaphragm cloth for water electrolyzer and production method thereof
  • Diaphragm cloth for water electrolyzer and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Polyphenylene sulfide staple fibers with a diameter of 9.75 μm and a length of 51 mm ("TORCON®" produced by Toray, specification S301) are passed through cleaning-carding-drawing-roving-spinning-winding-doubling- Twisting-heat-setting cotton spinning process to produce 20s / 4 polyphenylene sulfide yarn; then weaving the prepared polyphenylene sulfide yarn through a rapier loom to obtain a warp density of 177 Roots / 10cm, weft density of 126 / 10cm high-density plain woven fabrics, the high-density woven fabrics were refined at a temperature of 90°C and a speed of 30m / min, and then carried out on a drum dryer at a temperature of Drying treatment at 150°C with a speed of 10m / min, and then perform atmospheric pressure plasma treatment on the surface of the dried polyphenylene sulfide plain weave fabric. The treatment conditions are: under the action of air, the treatment intensity is 50KW·s / m 2 , the final weight is 425g / m 2 , a thickness of 0.80mm, a warp strength of 2878N / 5...

Embodiment 2

[0058]The polyphenylene sulfide staple fibers with a diameter of 6 μm and a length of 51 mm are spun through the cotton spinning process of cleaning-carding-drawing-roving-spinning-winding-doubling-twisting-heat setting to obtain 20s / 2 polyphenylene sulfide yarn; then the prepared polyphenylene sulfide yarn is woven through a rapier loom to obtain a high-density yarn with a warp density of 264 / 10cm and a weft density of 173 / 10cm Plain weave fabric, the high-density woven fabric obtained is refined at a temperature of 90°C and a speed of 30m / min, and then dried on a drum dryer at a temperature of 130°C and a speed of 15m / min to obtain Weight 305g / m 2 A water electrolyzer with a thickness of 0.55mm, a warp strength of 2120N / 5cm, a latitudinal strength of 1580N / 5cm, a coverage factor of 2697, an average pore diameter of 4.5μm, and pore diameters ranging from 0.2 to 10μm accounting for 85% of all pores Using a diaphragm cloth, the prepared diaphragm is tested by an X-ray photoele...

Embodiment 3

[0060] The polyphenylene sulfide staple fibers with a diameter of 12 μm and a length of 51 mm are spun through the cotton spinning process of cleaning-carding-drawing-roving-spinning-winding-doubling-twisting-heat setting to obtain 20s / 6 polyphenylene sulfide yarn; then the prepared polyphenylene sulfide yarn is woven through a rapier loom to obtain a high-density yarn with a warp density of 154 / 10cm and a weft density of 106 / 10cm Plain weave fabric, the high-density woven fabric obtained is refined at a temperature of 90°C and a speed of 25m / min, and then dried on a drum dryer at a temperature of 150°C and a speed of 10m / min, and then Heat setting treatment at a temperature of 190°C and a speed of 30m / min, and then conduct vacuum plasma treatment on the surface of the dry and heat-set polyphenylene sulfide plain weave fabric. Treatment conditions: under the simultaneous action of oxygen and argon, The treatment intensity is 150KW·s / m 2 , the final weight is 568g / m 2 , a thi...

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
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Abstract

The invention discloses a diaphragm cloth for a water electrolyzer and a production method thereof. The diaphragm cloth is a high-density woven fabric composed of polyphenylene sulfide fibers with a diameter of 4-12um, and the thickness of the diaphragm cloth is 0.2-3.0 mm, the weight is 200-600g / m2. The diaphragm cloth for water electrolyzer of the present invention has the characteristics of high air tightness, good hydrophilicity, and excellent ion permeability, and also has low cost, safety and environmental protection, light weight, and the production method is fast, efficient, and pollution-free , Simple operation and energy-saving features.

Description

technical field [0001] The invention relates to a diaphragm cloth for a water electrolyzer and a production method thereof. Background technique [0002] The diaphragm is the main core material of the water electrolyzer, which is placed between the anode and the cathode of the water electrolyzer to prevent the mixing of the gas on the anode side and the gas on the cathode side to ensure the purity of the gas. Its performance requirements are: fully wetted by electrolyte; small average pore size, high air tightness; large porosity; certain mechanical strength and rigidity; not corroded by alkaline electrolyte, high temperature resistance, strong chemical stability ; Easy to implement industrialization. [0003] At present, the main manufacturers of alkaline water electrolysis hydrogen production equipment in China still use asbestos cloth as the diaphragm. However, with the advancement of industrialization and technological progress, people have gradually realized that ther...

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
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D15/00D03D13/00D03D1/00D06B3/10D06B5/22D06C7/02D06M10/00D03D15/283
CPCD03D13/008D03D15/00D06B3/10D06B5/22D06M10/00D10B2331/301
Inventor 杨丽丽武田正明张尤娟
Owner TORAY IND INC
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