EP3342909B1 - Structure à fibres de polyphénylène sulfide à haute performance, son procédé de préparation et utilisation associée - Google Patents
Structure à fibres de polyphénylène sulfide à haute performance, son procédé de préparation et utilisation associée Download PDFInfo
- Publication number
- EP3342909B1 EP3342909B1 EP16838554.0A EP16838554A EP3342909B1 EP 3342909 B1 EP3342909 B1 EP 3342909B1 EP 16838554 A EP16838554 A EP 16838554A EP 3342909 B1 EP3342909 B1 EP 3342909B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pps
- yarns
- equal
- twist
- fiber structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000835 fiber Substances 0.000 title claims description 157
- -1 polyphenylene Polymers 0.000 title description 2
- 229920000265 Polyparaphenylene Polymers 0.000 title 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title 1
- 238000002360 preparation method Methods 0.000 title 1
- 239000011148 porous material Substances 0.000 claims description 129
- 239000004744 fabric Substances 0.000 claims description 101
- 239000002759 woven fabric Substances 0.000 claims description 89
- 238000000034 method Methods 0.000 claims description 61
- 238000003856 thermoforming Methods 0.000 claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000004804 winding Methods 0.000 claims description 34
- 238000009832 plasma treatment Methods 0.000 claims description 33
- 238000012545 processing Methods 0.000 claims description 27
- 238000006277 sulfonation reaction Methods 0.000 claims description 26
- 238000009991 scouring Methods 0.000 claims description 25
- 238000005406 washing Methods 0.000 claims description 21
- 238000009960 carding Methods 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 19
- 229920000742 Cotton Polymers 0.000 claims description 18
- 238000009987 spinning Methods 0.000 claims description 18
- 238000009941 weaving Methods 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000007334 copolymerization reaction Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000007730 finishing process Methods 0.000 claims description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 258
- 229920000069 polyphenylene sulfide Polymers 0.000 description 258
- 239000007789 gas Substances 0.000 description 50
- 238000010521 absorption reaction Methods 0.000 description 22
- 241001580935 Aglossa pinguinalis Species 0.000 description 21
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 12
- 239000001257 hydrogen Substances 0.000 description 12
- 229910052739 hydrogen Inorganic materials 0.000 description 12
- 239000003513 alkali Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 230000003247 decreasing effect Effects 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 9
- 239000010425 asbestos Substances 0.000 description 9
- 229910052895 riebeckite Inorganic materials 0.000 description 9
- 239000000523 sample Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000035515 penetration Effects 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- XTHPWXDJESJLNJ-UHFFFAOYSA-N chlorosulfonic acid Substances OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- JZZIHCLFHIXETF-UHFFFAOYSA-N dimethylsilicon Chemical compound C[Si]C JZZIHCLFHIXETF-UHFFFAOYSA-N 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/30—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/30—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments
- D03D15/37—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments with specific cross-section or surface shape
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/41—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific twist
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/573—Tensile strength
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/30—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14
- D10B2331/301—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14 polyarylene sulfides, e.g. polyphenylenesulfide
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/022—Moisture-responsive characteristics hydrophylic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/04—Filters
Definitions
- the present invention relates to a high-performance polyphenylene sulfide (PPS) fiber structure and production method and use thereof.
- PPS polyphenylene sulfide
- Diaphragm cloth is the main core material of water electrolyzers.
- Water-electrolytic hydrogen generators and oxygen generators are widely applied in military, petrochemical, and iron and steel making fields.
- major manufacturers of alkaline water-electrolytic hydrogen generators in China still use asbestos cloth as diaphragm.
- asbestos diaphragms have some drawbacks in production practice. Though asbestos is non-hazardous in itself, a severe hazard is incurred by the asbestos fibers, which are fibers that are extremely fine and almost invisible to naked eyes. After those fine fibers are released, they will float in the air for a long time and may be inhaled into human body.
- diaphragm cloth has been used as the main core material of water electrolysis equipment for long.
- asbestos diaphragms are being replaced with diaphragm cloth made from PPS fibers .
- the obtained diaphragms may have non-uniform pore size and poor gas impermeability if the fineness of the fibers used to weave PPS diaphragm cloth is inappropriate and the ratio of the twist of single yarns to the twist of plied yarns is improper.
- an asbestos-free environment-friendly and energy-saving diaphragm is disclosed.
- the diaphragm is a woven fabric woven from a raw material that consists of one, two or three of polyetheretherketone fibers, PPS fibers, and polypropylene fibers.
- the gas impermeability of the diaphragm cloth meets the requirements of the standard for asbestos diaphragms, the obtained diaphragm cloth has poor hydrophilicity and can't truly meet the application requirements, owing to the poor water absorptivity of the above-mentioned chemical fibers.
- a diaphragm cloth for a water electrolyser is a high density woven fabric formed by polyphenylene sulfide fiber with a diameter ranging from 4 to 12pm.
- the thickness of the cloth is 0.2 to 3.0mm and the gram weight is 200 to 600g/m 2 .
- aspects of the invention provide a high-performance PPS fiber structure, a method for producing the structure and the use of the structure as defined in the accompanying claims.
- the present invention attains the following beneficial effects: in the present invention, since PPS fibers at 0.1 to 12 ⁇ m fineness are used and the ratio of the twist of single yarns to the twist of plied yarns is proper, the drawbacks of non-uniform pore size and low gas impermeability in the prior art are overcome, and the obtained PPS woven fabric has small and uniform pore size. Therefore, the PPS fiber structure provided in the present invention not only has advantages of high gas impermeability and good hydrophilicity, but also has advantages of simple process, reduced energy consumption, and zero pollution to the environment.
- the PPS fiber structure provided in the present invention can be applied to diaphragms for electrolytic apparatuses, high-temperature liquid filter materials and insulating materials.
- the PPS fiber structure in the present invention is a woven fabric formed of PPS fibers in 0.1 to 12 ⁇ m cross sectional diameter, wherein, the maximum pore size of the PPS fiber structure is 20 ⁇ m or smaller.
- fabric with tabby has the highest number of interlacing points and the highest compactness. Therefore, woven fabric with tabby is preferred.
- the cross sectional diameter of the PPS fibers is smaller than 0.1 ⁇ m, the fibers will be difficult for carding in the carding procedure because the fibers are too thin. Consequently, cellfibre may be fractured, a phenomenon of undesirable resultant yarn and excessive neps may occur, and the quality of the yarns may be degraded.
- the obtained PPS cloth may have excessive flaws on the surface, which will influence the pore size and thickness of the fabric, leading to that the pore size and thickness of the fabric are non-uniform, and the gas impermeability of the fabric is further degraded; if the cross sectional diameter of the PPS fibers is greater than 12 ⁇ m, the cellfibre yarn will be too rigid and difficult to produce yarns because the fibers are too thick. Besides, the thick yarns will bring about difficulty in weaving, and the obtained fabric will have increased pore size and poor gas impermeability.
- the cross sectional diameter of the PPS fibers preferably is 6 to 10 ⁇ m, more preferably 6 to 8 ⁇ m.
- the warp yarns and weft yarns that form the PPS fiber structure are PPS staple yarns that have suffered from hydrophilic treatment. Both the warp yarns and weft yarns of the PPS fiber structure in the present invention use staple yarns. Compared with filament yarns, staple yarns have higher cohesive property between cellfibres, the voids between the cellfibres will not be increased owing to the structure of the yarns, and the pore size and gas impermeability of the fabric will not be affected.
- the staple yarns used in the present invention may be single yarns or plied yarns formed of single yarns, preferably are plied yarns . To ensure that the PPS fiber structure has excellent hydrophilicity, preferably PPS staple yarns treated through hydrophilic treatment are used.
- the hydrophilic treatment refers to increase hydrophilic groups, such as hydroxyl, carboxyl, carbonate, and sulfate groups, etc., on the surface of the PPS fibers by plasma treatment, sulfonation, or grafting.
- the grafting ratio of the PPS yarns treated through hydrophilic treatment is 0.1 to 3%, preferably is 0.5 to 3%.
- the maximum pore size of the PPS fiber structure in the present invention is 20 ⁇ m or smaller. If the maximum pore size of the PPS fiber structure is greater than 20 ⁇ m, the pore size of the PPS fiber structure will be too great, hydrogen or oxygen bubbles may penetrate through the voids in the fiber structure easily in the hydrogen generator when the PPS fiber structure is used. Consequently, the purity of single gas may be degraded. Therefore, the maximum pore size of the PPS fiber structure is 20 ⁇ m or smaller.
- the maximum pore size of the PPS fiber structure preferably is 15 ⁇ m or smaller; to make the pore size of the fiber structure more uniform and the distribution of pore sizes more concentrated, preferably the maximum pore size of the PPS fiber structure is 12 ⁇ m or smaller.
- the average pore size of the PPS fiber structure is 5 ⁇ m or smaller, and pores in 6 ⁇ m or smaller diameter account for 90% or a high percentage of all the pores in the fiber structure. If the average pore size of the PPS fiber structure is controlled within the above-mentioned range, high gas impermeability can be ensured, and it will be difficult for gas molecules and bubbles to penetrate through the voids, thereby mixing between the gas at the anode size and the gas at the cathode side can be prevented, and the purity and safety of the gas will be good. If the average pore size of the PPS fiber structure is greater than 5 ⁇ m, the woven fabric can't attain an isolation effect when it is used in the hydrogen production equipment since the pore size of the woven fabric is too great.
- the purity of the obtained hydrogen or oxygen may be low and can't meet the application requirements of the customers.
- the weaving conditions are optimized to improve the uniformity of pore size, so that pores in 6 ⁇ m or smaller pore size account for 90% or above of all the pores, preferably 95% or above.
- the yarn count of single yarns in the PPS woven fabric is 21 to 60 s, (281 to 98 dtex) and the twist factor ⁇ is 200 to 310. If the yarn count of the single yarns is within the above-mentioned range, the obtained PPS fabric will have small and uniform pore size and high gas impermeability; moreover, the obtained woven fabric can attain a good hydrophilic treatment effect in the post processing. If the yarn count "s" of the single yarns is too low, the yarns will be too thick.
- the pore size of the woven fabric will be great, the gas impermeability of the woven fabric will be low, and ultimately the purity of obtained hydrogen or oxygen will be poor; if the yarn count "s" of the single yarns is too high, extremely thin yarns have to be used. Consequently, the production process will be difficult.
- the twist factor of the single yarns is within the above-mentioned range, the obtained PPS yarn will have moderate fluffiness.
- the obtained woven fabric will have small and uniform pore size and high gas impermeability, and the woven fabric can attain a good hydrophilic treatment effect in the post processing. If the twist factor of the yarns is too low, the twist of the yarns will be too low.
- the strength of the yarns will be low, the yarns may be broken easily in the weaving process, and the strength of the obtained fabric will be degraded; on one hand, if the twist factor of the yarns is too high, the twist of the yarns will be too high, and the voids at the interlacing points in the fabric will be obvious, and the pore size will be increased; on the other hand, the voids among the fibers in the yarns will be deceased, and the pore size of the entire woven fabric will be non-uniform and the gas impermeability will be decreased.
- the twist factor of the yarns of the PPS woven fabric is 180 to 350. If the twist factor of the yarns is too low, the twisting angle of the single fibers will be small, the cohesion force among the fibers will be decreased, the strength of the yarns will be decreased, and the weaving operation will be difficult in the weaving process, since the strength of the yarns is too low; if the twist factor of the yarns is too high, the cohesion force among the fibers will be too high, the strength of the yarns will be decreased, and pigtails may occur easily in the weaving process, resulting in that the weaving process will difficult to go on.
- the tension on the warp yarns is greater than the tension for wefting insertion of the weft yarns.
- the twist of the warp yarns is greater than or equal to the twist of the weft yarns in the PPS fiber structure in the present invention. If the twist of the warp yarns is slightly greater, the strength of the warp yarns can be ensured, and the shedding rate can be improved, which are beneficial for the weaving operation. If the weft yarns are staple yarns with slightly lower twist, the yarns will be fluffy, and the defect of increased and non-uniform pore size incurred by the increased twist of the warp yarns can be compensated.
- the ratio of the twist of the PPS yarns to the twist of the PPS single yarns in the present invention is 0.2 to 1.0. If the ratio of the twist of the yarns to the twist of the single yarns is within the above-mentioned range, the woven fabric will have uniform pore size, and more hydrophilic groups can be grafted during the hydrophilic treatment on the woven fabric. Thus, the liquid content in the woven fabric will be increased, and the aqueous film formed on the surface layer of the woven fabric will be thicker and can effectively block bubble penetration. Therefore, the purity of the obtained gas will be increased.
- the ratio of the twist of the PPS yarns to the twist of the single yarns is too low, the twist of the yarns will certainly be decreased, and the strength of the obtained PPS yarns will be low. Consequently, the strength of the obtained PPS woven fabric will be decreased, and the woven fabric may be penetrated more easily; if the ratio of the twist of the PPS yarns to the twist of the single yarns is too high, the voids among the fibers in the yarns will be decreased, so the pore size of the entire woven fabric will be non-uniform, the decreased gas impermeability will lead to non-uniform pore size of the woven fabric, and thereby the hydrophilic groups grafted to the woven fabric will be less.
- the gas impermeability of the PPS fiber structure in the present invention is 400 mmH 2 O or above.
- the requirement for gas impermeability of diaphragm cloth for water electrolyzers can be met essentially; in addition, the diaphragm cloth has excellent gas impermeability, ion passing efficiency and processability. If the gas impermeability is lower than 400 mmH 2 O, the basic requirement for diaphragms can't be met, and the purity of the obtained gas will be affected.
- the area resistance of the PPS fiber structure in the present invention is 60 m ⁇ cm 2 or lower, preferably is 10 m ⁇ cm 2 or lower. If the area resistance of the PPS fiber structure is higher than 60 m ⁇ cm 2 , the resistance of the fabric will be great, the electric power consumption will be increased, and the production cost will be increased accordingly.
- the alkali absorption ratio of the PPS fiber structure in the present invention is 70 to 200%. If the alkali absorption ratio of the PPS fiber structure is too low, it will be difficult to form an aqueous film or the aqueous film will be too thin in alkaline liquor, and can't effectively block gas bubble penetration, and the purity of the obtained gas will be decreased; if the alkali absorption ratio of the PPS fiber structure is too high, the structure of the woven fabric will be certainly too loose, the voids in the woven fabric will be greater, and the performance of the diaphragm will be affected. In consideration of the hydrophilicity and structure of the PPS fiber structure, the alkali absorption ratio of the PPS fiber structure in the present invention preferably is 85 to 180%, more preferably is 100 to 160%.
- the high-performance PPS fiber structure in the present invention is applied to hydrogen generator, and its function is mainly for preventing penetration of gas molecules while allowing penetration of ions. Since different customers have different requirements for the purity of produced hydrogen and oxygen, the requirements for the pore size and gas impermeability of the fabric may be different, but such requirements are irrelevant to the type and texture of the fabric. The fabric can meet the requirements of the customers as long as interpenetration among gas molecules will not happen.
- the method for producing a high-performance PPS fiber structure in the present invention comprises the following steps:
- the method for plasma hydrophilic treatment includes normal pressure plasma treatment and low pressure plasma treatment.
- Normal pressure plasma treatment methods include glow discharge, silent discharge, and corona discharge, wherein, the glow discharge includes direct current, high frequency current, and microwave radiation; the gasses processed by low pressure plasma treatment include oxygen, argon, and nitrogen, etc.
- the plasma hydrophilic treatment preferably is normal pressure plasma DC glow discharge, the conditions of which include: voltage: 5 to 15 V, current: 12 to 18 A, and the content of grated oxygen element accounts for 15 to 25% of the measured element content. After the plasma treatment, concavo-convex pits will be created on the surfaces of the PPS fibers.
- the capillary effect and water absorptivity of the PPS woven fabric can be improved.
- the hydrophilic groups grafted to the surface layer of the PPS fibers includes sulfate, carboxylate, carbonate, hydroxyl, and carbonyl, etc., these grafted hydrophilic groups can improve the water absorption rate of the PPS fibers and improve the purity of hydrogen and oxygen.
- thermoformed fabric is processed by plasma treatment and sulfonation processing
- the thermoformed fabric is processed by plasma treatment to physically etch the PPS yarns and form concavo-convex pits on the surface layer of the fibers to increase the specific surface area of the PPS fibers; then, the PPS fabric is processed by sulfonation processing after the plasma treatment, such that the number of grafted hydrophilic groups can be increased and the hydrophilic property of the PPS fabric will be better.
- the PPS yarns prepared in the step (1) is processed by at least one of plasma treatment, sulfonation processing, and graft copolymerization methods, to obtain hydrophilic PPS yarns.
- the yarn is processed merely by plasma treatment, the fabric may have poor durability, and the hydrophilicity of the fabric after scouring may be degraded.
- the hydrophilicity of the fabric may be decreased owing to the impact of chemicals and high temperature in post-treatment when the graft copolymerization process is used. Therefore, preferably the PPS yarns are sulfonation processing, or more preferably the PPS yarns are sulfonation processing after the plasma treatment.
- the sulfonation processing method is to treating the yarns in a sulfonation treatment liquid (85 to 98% chlorosulfonic acid or concentrated sulfuric acid) at 80 to 120°C for 1 to 5 min., to graft hydrophilic groups (sulfate, etc.) to the surface layer of the PPS fibers.
- the plasma treatment method may be normal pressure plasma treatment or vacuum plasma treatment. Through plasma treatment, concavo-convex pits are formed on the surface of the PPS fibers, and thereby the capillary effect and water absorptivity of the PPS fibers are improved.
- hydrophilic groups including sulfate, carboxylate, carbonate, hydroxyl, and carbonyl, etc., are grafted to the surface layer of the PPS fibers, so that the water absorption rate of the PPS fibers can be improved, and the purity of hydrogen and oxygen can also be improved.
- Example 9 does not illustrate a fiber structure of claim 1.
- the properties of the materials are measured with the following methods or calculated with the following formulae.
- the yarn count is stated in unit "s"; the conversion factor to dtex is 5905.4/s.
- the pore sizes of the fabric are measured with a capillary flow void measuring instrument (model: CFP-1100-AE, from PMI) in a wet-up/dry-down work mode according to the standard ASTMF316-03.
- the testing environment is 23°C and 50%RH.
- a fabric sample is placed in a sample chamber, and is wetted with silwick silicone fluid with 19.1 dynes/cm surface tension.
- the bottom fixture in the sample chamber has a porous metal disc in 2.54 cm diameter and 3.175 mm thickness, and the top fixture in the sample chamber has pores in 3.175 mm diameter.
- the average pore size of the fabric can be read out directly. The average value of measurements in two times is taken as the final average pore size value.
- the gas impermeability is measured according to the Article 4.5.2 “Gas Impermeability Test” in the Chinese Building Material Industry Standard JCT 211-2009 "Diaphragm Asbestos Cloth”.
- the water absorption of diaphragm cloth before and after hydrophilic treatment is measured according to GB/T21655.1-2008.
- the water absorption rate is tested according to the Article 7.1.1 "falling-drop method” in JIS L1907-2010 "Water Absorption Testing Method for Fiber Products”.
- An apparatus for testing the area resistance of PPS diaphragm is set up according to the Electronics Industry Standard SJ/T 10171.5-91 "Measurement Methods for Performance of Separator of Alkaline Batteries - Determination of Area-Resistance of Separator" in PRC.
- the parameters of the apparatus are as follows:
- a piece of woven fabric in 40 mm * 40 mm size is obtained and the weight G 1 of the woven fabric is weighed; the woven fabric is immersed in 30% KOH solution for 4 h and then is taken out. The woven fabric is hung for half minute, so that the alkaline liquor in the woven fabric drops out; then, the weight G 2 is weighed, and the alkali absorption ratio is calculated.
- Round PPS fibers in 10 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 40 s, twist equal to 81 T/10 cm, and twist factor equal to 311; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 4, warp twist and weft twist equal to 45 T/10 cm respectively, and twist factor equal to 346, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.56; the obtained PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 55.3 yarns/inch and density in weft direction equal to 48.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying
- a PPS fiber structure with cover factor equal to 2510, thickness equal to 0.64 mm, maximum pore size equal to 16 ⁇ m, average pore size equal to 3.0 ⁇ m (pores in 6 ⁇ m or smaller diameter account for 94% or above of all pores in the woven fabric), area resistance R equal to 2.2 m ⁇ cm 2 , and strength in warp direction and strength in weft direction equal to 900 N/3 cm and 602 N/3 cm respectively is obtained.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- the PPS yarns obtained in the Example 1 are treated with 98% concentrated sulfuric acid at 90°C for 3 min. to obtain hydrophilic PPS yarns with grafting ratio equal to 1.8%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 55.0 yarns/inch and density in weft direction equal to 48.7 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 8 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 60 s, twist equal to 90 T/10 cm, and twist factor equal to 282; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 6, warp twist and weft twist equal to 44 T/10 cm respectively, and twist factor equal to 338, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.49; the obtained PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 66.3 yarns/inch and density in weft direction equal to 39.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 8 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 40 s, twist equal to 57 T/10 cm, and twist factor equal to 219; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 4, warp twist and weft twist equal to 47 T/10 cm respectively, and twist factor equal to 361, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.82; the obtained PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 68.8 yarns/inch and density in weft direction equal to 43.7 yarns/inch; the obtained grey cloth is processed by scouring, water washing,
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 9 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 20 s, twist equal to 48 T/10 cm and twist factor equal to 261; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist and weft twist equal to 40 T/10 cm respectively, and twist factor equal to 307, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.83; the obtained PPS yarns are processed with 98% concentrated sulfuric acid at 90°C for 3 min to obtain hydrophilic PPS yarns with grafting ratio equal to 1.3%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 68.3 yarns/inch and density in weft direction equal to 45.2 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 10 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 40 s, twist equal to 81 T/10 cm and twist factor equal to 311; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist and weft twist equal to 71 T/10 cm respectively, and twist factor equal to 386, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.88; the obtained PPS yarns are processed by plasma treatment at normal pressure and then processed with 85% concentrated sulfuric acid at 95°C for 3 min.
- hydrophilic PPS yarns with grafting ratio equal to 2.6%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 88.0 yarns/inch and density in weft direction equal to 64.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is processed by plasma treatment and then processed by sulfonated hydrophilic processing.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 11 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 60 s, twist equal to 90 T/10 cm and twist factor equal to 282; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist and weft twist equal to 76 T/10 cm respectively, and twist factor equal to 337, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.84; the obtained PPS yarns are processed by steaming with polyester hydrophilic resin to obtain hydrophilic PPS yarns with grafting ratio equal to 0.6%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 113.0 yarns/inch and density in weft direction equal to 60.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is processed by plasma treatment and then is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 4 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 60 s, twist equal to 90 T/10 cm, and twist factor equal to 282; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist and weft twist equal to 76 T/10 cm respectively, and twist factor equal to 337, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.84; the obtained PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 113.0 yarns/inch and density in weft direction equal to 65.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing
- a PPS fiber structure with cover factor equal to 2497, thickness equal to 0.30 mm, maximum pore size equal to 16 ⁇ m, average pore size equal to 4.2 ⁇ m (pores in 6 ⁇ m or smaller diameter account for 90% or above of all pores in the woven fabric), area resistance R equal to 1.4 m ⁇ cm 2 , and strength in warp direction and strength in weft direction equal to 625 N/3 cm and 378 N/3 cm respectively is obtained.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 7 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 60 s, twist equal to 90 T/10 cm, and twist factor equal to 282; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 4, warp twist and weft twist equal to 54 T/10 cm respectively, and twist factor equal to 339, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.60; the obtained PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 90.0 yarns/inch and density in weft direction equal to 60.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying and
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 11 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 20 s, twist equal to 56 T/10 cm and twist factor equal to 304; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist and weft twist equal to 24 T/10 cm respectively, and twist factor equal to 184, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.43; the obtained PPS yarns are processed by plasma treatment at normal pressure and then processed with 85% concentrated sulfuric acid at 95°C for 3 min.
- hydrophilic PPS yarns with grafting ratio equal to 2.8%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 58.0 yarns/inch and density in weft direction equal to 54.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 8 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 20 s, twist equal to 48 T/10 cm and twist factor equal to 261; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist equal to 40 T/10 cm and twist factor equal to 307, wherein, the ratio of the twist of the warp yarns to the twist of the single yarns is 0.83; and weft twist equal to 36 T/10 cm and twist factor equal to 277, wherein, the ratio of the twist of the weft yarns to the twist of the single yarns is 0.75.
- the obtained PPS yarns are processed with 98% concentrated sulfuric acid at 90°C for 3 min. to obtain hydrophilic PPS yarns with grafting ratio equal to 1.5%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 68.3 yarns/inch and density in weft direction equal to 44.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 8 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 40 s, twist equal to 81 T/10 cm and twist factor equal to 311; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist equal to 80 T/10 cm and twist factor equal to 435, wherein, the ratio of the twist of the warp yarns to the twist of the single yarns is 0.99; and weft twist equal to 60 T/10 cm and twist factor equal to 326, wherein, the ratio of the twist of the weft yarns to the twist of the single yarns is 0.74.
- the obtained PPS yarns are processed with 98% concentrated sulfuric acid at 90°C for 3 min. to obtain hydrophilic PPS yarns with grafting ratio equal to 1.8%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 88.0 yarns/inch and density in weft direction equal to 62.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 6 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 60 s, twist equal to 90 T/10 cm and twist factor equal to 282; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 3, warp twist equal to 54 T/10 cm and twist factor equal to 293, wherein, the ratio of the twist of the warp yarns to the twist of the single yarns is 0.60; and weft twist equal to 40 T/10 cm and twist factor equal to 217, wherein, the ratio of the twist of the weft yarns to the twist of the single yarns is 0.44.
- the obtained PPS yarns are woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 95.0 yarns/inch and density in weft direction equal to 68.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 10 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 20 s, twist equal to 48 T/10 cm and twist factor equal to 261; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist equal to 36 T/10 cm and twist factor equal to 277, wherein, the ratio of the twist of the warp yarns to the twist of the single yarns is 0.75; and weft twist equal to 40 T/10 cm and twist factor equal to 307, wherein, the ratio of the twist of the weft yarns to the twist of the single yarns is 0.83.
- the obtained PPS yarns are processed with 98% concentrated sulfuric acid at 90°C for 3 min. to obtain hydrophilic PPS yarns with grafting ratio equal to 1.3%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 58.2 yarns/inch and density in weft direction equal to 50.3 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is sulfonated.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- Round PPS fibers in 0.8 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 60 s, twist equal to 90 T/10 cm and twist factor equal to 282; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 6, twist equal to 45 T/10, and twist factor equal to 346, wherein, the ratio of the twist of the yarns to the twist of the single yarns is 0.50; the obtained PPS yarns are processed by plasma treatment to obtain hydrophilic PPS yarns with grafting ratio equal to 0.8%.
- the obtained hydrophilic PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 65.0 yarns/inch and density in weft direction equal to 51.5 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying, and thermoforming at 180°C; and then the thermoformed PPS woven fabric is processed by plasma treatment.
- the properties of the PPS fiber structure obtained in the present invention are assessed and shown in Table 1.
- the PPS fiber structures obtained in the Examples 1 to 15 can be applied in diaphragms for electrolytic apparatuses, high-temperature liquid filter materials and insulating materials.
- Round PPS fibers in 13 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 20 s, twist equal to 56 T/10 cm, and twist factor equal to 304; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 2, warp twist and weft twist equal to 60 T/10 cm respectively, and twist factor equal to 461, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 1.07; the obtained PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 67.0 yarns/inch and density in weft direction equal to 46.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying and thermo
- the properties of the PPS fiber structure are assessed and shown in Table 1.
- Round PPS fibers in 14 ⁇ m cross sectional diameter are processed through scutching - carding - drawing - roving - fine yarns - winding - thermoforming procedures to obtain PPS single yarns with yarn count equal to 20 s, twist equal to 56 T/10 cm, and twist factor equal to 304; the obtained PPS single yarns are span through a cotton spinning process including winding - doubling - twisting - thermoforming procedures to obtain PPS yarns with ply number equal to 4, warp twist and weft twist equal to 40 T/10 cm respectively, and twist factor equal to 435, wherein, the ratio of the twist of the PPS yarns to the twist of the single yarns is 0.71; the obtained PPS yarns are used as warp yarns and weft yarns and woven on a loom to obtain grey cloth with tabby having density in warp direction equal to 45.0 yarns/inch and density in weft direction equal to 30.0 yarns/inch; the obtained grey cloth is processed by scouring, water washing, drying and
- the properties of the PPS fiber structure are assessed and shown in Table 1.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Example 8 Cross sectorial diameter( ⁇ m) 10 10 8 8 9 10 11 4 Yarn count of single yarns(s) 40 40 60 40 20 40 60 60 Twist of single yarns(T/10cm) 81 81 90 57 48 81 90 90 90 Twist factor of single yarns ( ⁇ ) 311 311 282 219 261 311 282 282 Plynumber (ply) 4 4 6 4 2 2 2 2 2
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Claims (8)
- Structure à fibres de PPS à haute performance, dans laquelle la structure à fibres de PPS est un tissu tissé constitué de fibres de PPS présentant un diamètre de section transversale de 0,1 à 12 µm, la taille de pores maximum de la structure à fibres de PPS est de 20 µm ou moins, la taille de pore moyenne de la structure à fibres de PPS est de 5 µm ou moins, et de pores de 6 µm ou moins de diamètre représentent 90 % ou plus de tous les pores de la structure à fibres, les fils de chaîne et les fils de trame qui forment la structure à fibres de PPS sont des fils discontinus de PPS qui ont été soumis à un traitement hydrophile, le titre de fils simples de PPS dans le tissu tissé est de 295 à 98 dtex (20 à 60 s), le facteur de torsion des fils simples de PPS formant le tissu tissé est de 180 à 350, et le facteur de couverture du tissu est compris entre 2 400 et 2 900, calculé comme décrit dans la description, et dans laquelle la taille de pore est mesurée selon le procédé de la description.
- Structure à fibres de PPS à haute performance selon la revendication 1, caractérisée en ce que la torsion des fils de chaîne est supérieure ou égale à la torsion des fils de trame dans la structure à fibres de PPS.
- Structure à fibres de PPS à hautes performance selon la revendication 1 ou 2, caractérisée en ce que le rapport de la torsion de fils de PPS retors formant le tissu tissé à la torsion des fils simples de PPS est de 0,2 à 1,0.
- Structure à fibres de PPS à haute performance selon la revendication 1 ou 2, caractérisée en ce que l'imperméabilité aux gaz de la structure à fibres de PPS, mesurée selon le procédé de la description, est de 400 mmH2O ou plus.
- Structure à fibres de PPS à haute performance selon la revendication 1 ou 2, caractérisée en ce que la résistance de surface de la structure à fibres de PPS, mesurée selon le procédé de la description, est de 60 mΩ·cm2 ou moins.
- Procédé de production de la structure à fibres de PPS à haute performance selon la revendication 1, comprenant les étapes suivantes :(1) un processus de filage de coton : traitement de fibres de PPS de 0,1 à 12 µm de diamètre de section transversale par ouverture et nettoyage, cardage, étirage, bambrochage, étirage du bambrochage pour obtenir des fils simples de PPS avec un titre égal à 295 à 98 dtex (20 à 60 s) et un facteur de torsion α égal à 180 à 350, traitement des fils simples de PPS par enroulement, facultativement doublage et torsion, et par thermoformage en fils de PPS avec un nombre de plis égal à 1 à 6 ;(2) processus de tissage : traitement des fils de PPS obtenus par ourdissage de chaînes, étirage, repassage et tissage, pour obtenir un tissu tissé de PPS avec un facteur de couverture égal à 2 400 à 2 900, calculé comme décrit dans la description ;(3) processus de post-finition : traitement du tissu tissé de PPS obtenu par récurage, lavage à l'eau, séchage et thermoformage à 180 à 200°C ;(4) processus de traitement hydrophile : traitement du tissu thermoformé par traitement hydrophile par plasma et/ou traitement hydrophile sulfoné, pour obtenir enfin un produit fini.
- Procédé de production de la structure à fibres de PPS à haute performance selon la revendication 9, caractérisé en ce que les fils de PPS obtenus dans l'étape (1) sont traités par au moins un parmi un traitement par plasma, un traitement de sulfonation et une copolymérisation par greffage, pour obtenir des fils de PPS hydrophiles.
- Utilisation de la structure à fibres de PPS à haute performance selon l'une quelconque des revendications 1 à 5 dans des diaphragmes pour appareils électrolytiques, des matériaux de filtrage de liquide à haute température et des matériaux isolants.
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PCT/CN2016/096309 WO2017032295A1 (fr) | 2015-08-24 | 2016-08-23 | Structure à fibres de polyphénylène sulfide à haute performance, son procédé de préparation et utilisation associée |
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CN109659471B (zh) * | 2018-12-03 | 2021-07-09 | 深圳市量能科技有限公司 | 一种隔膜的制备方法及电池隔膜 |
CN109898322A (zh) * | 2019-03-15 | 2019-06-18 | 天津工业大学 | 一种磺化非织造布及制备方法 |
CN111733602B (zh) * | 2020-06-29 | 2022-04-19 | 天津工业大学 | 一种PPS/MOFs微纳米纤维碱性水电解槽隔膜的制备方法 |
CN112626639B (zh) * | 2020-12-16 | 2021-12-17 | 四川大学 | 载活性炭聚苯硫醚多孔纤维及其制备方法和应用 |
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EP1862208A1 (fr) * | 2006-10-26 | 2007-12-05 | A. Kayser GmbH u. Co.KG Textile Filtermedien | Medium filtrant contenant des fibres de basalte |
CN101372752B (zh) * | 2007-08-21 | 2010-12-08 | 天津工业大学 | 耐高温碱性水电解槽隔膜及其制备方法 |
CN101195944B (zh) * | 2007-12-11 | 2011-09-07 | 卢宗广 | 无石棉环保节能型隔膜布及其织造方法 |
CN101575759A (zh) * | 2009-06-16 | 2009-11-11 | 四川省纺织科学研究院 | 聚苯硫醚机织物及其生产工艺 |
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CN201864854U (zh) * | 2010-09-29 | 2011-06-15 | 辽宁博联过滤有限公司 | 一种电解镍用机织隔膜布及使用该隔膜布制作的隔膜袋 |
CN202724876U (zh) * | 2012-07-24 | 2013-02-13 | 上海杜为化纤有限公司 | 一种高温烟气粉尘捕获过滤用3d织物 |
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DK3342909T3 (da) | 2021-06-07 |
JP2018534441A (ja) | 2018-11-22 |
US20180251920A1 (en) | 2018-09-06 |
ES2875590T3 (es) | 2021-11-10 |
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