CN109830703A - A kind of polymer matrix gas diffusion layer of sheet material and preparation method - Google Patents
A kind of polymer matrix gas diffusion layer of sheet material and preparation method Download PDFInfo
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- CN109830703A CN109830703A CN201910132354.4A CN201910132354A CN109830703A CN 109830703 A CN109830703 A CN 109830703A CN 201910132354 A CN201910132354 A CN 201910132354A CN 109830703 A CN109830703 A CN 109830703A
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- 229920000642 polymer Polymers 0.000 title claims abstract description 54
- 238000009792 diffusion process Methods 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 title claims abstract description 30
- 239000011159 matrix material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 239000002904 solvent Substances 0.000 claims abstract description 25
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 24
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 23
- 239000004917 carbon fiber Substances 0.000 claims abstract description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 23
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 20
- 239000001110 calcium chloride Substances 0.000 claims abstract description 20
- 238000010422 painting Methods 0.000 claims abstract description 20
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000006258 conductive agent Substances 0.000 claims abstract description 18
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 18
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 12
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000004695 Polyether sulfone Substances 0.000 claims description 14
- 229920006393 polyether sulfone Polymers 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 9
- 239000002041 carbon nanotube Substances 0.000 claims description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 150000002576 ketones Chemical class 0.000 claims description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- 239000006230 acetylene black Substances 0.000 claims description 4
- 230000021523 carboxylation Effects 0.000 claims description 4
- 238000006473 carboxylation reaction Methods 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- IJAPPYDYQCXOEF-UHFFFAOYSA-N phthalazin-1(2H)-one Chemical compound C1=CC=C2C(=O)NN=CC2=C1 IJAPPYDYQCXOEF-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000006277 sulfonation reaction Methods 0.000 claims description 4
- -1 Phthalazinone Ether sulfone Chemical class 0.000 claims description 3
- 238000009395 breeding Methods 0.000 claims description 3
- 230000001488 breeding effect Effects 0.000 claims description 3
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 2
- 229940113088 dimethylacetamide Drugs 0.000 claims description 2
- 229920002480 polybenzimidazole Polymers 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 1
- 230000004927 fusion Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 33
- 238000007654 immersion Methods 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 12
- 239000000446 fuel Substances 0.000 description 12
- 230000009471 action Effects 0.000 description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- 210000004379 membrane Anatomy 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000004513 sizing Methods 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 4
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 235000012241 calcium silicate Nutrition 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 2
- 210000002469 basement membrane Anatomy 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004890 Hydrophobing Agent Substances 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminum chloride Substances Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000004040 pyrrolidinones Chemical class 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Inert Electrodes (AREA)
- Fuel Cell (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to new energy field of batteries, a kind of polymer matrix gas diffusion layer of sheet material and preparation method are provided.Including following preparation process: (1) polymeric substrate, nanometer silicone powder, conductive agent, carbon fiber, polymeric aluminum, calcium chloride being added in solvent, be uniformly dispersed obtained painting slurry；(2) painting slurry is continuously scratched in release film, removes release film after dry, obtains polymer-based film；(3) composite fluid that polymer-based film is immersed to sodium sulphate and silicic acid, then takes out, is aged, washs, dries, and polymer matrix gas diffusion layer of sheet material is made in last drawing and setting.Polymer, inorganic matter are closed the fusion of object by the present invention, so that gas diffusion layers have both rigidity and impact resistance, gas diffusion layer of sheet material obtained is indeformable, not broken, are easy to gas free diffusing, have excellent hydrophobicity.
Description
Technical field
The present invention relates to new energy field of batteries, in particular to fuel cell field, specifically disclose a kind of polymer matrix
Gas diffusion layer of sheet material and preparation method.
Background technique
Fuel cell becomes the hot spot of various countries' research and development as a kind of efficient, environmental-friendly power generator in recent years.
Its core component membrane electrode is three-in-one usually to be prepared by gas diffusion layers, Catalytic Layer and proton exchange membrane by heat pressing process
At.Gas diffusion layers are made of conductive porous material, play support Catalytic Layer, collected current, conduction gas and discharge water etc.
Multiple action realizes the reallocation of reaction gas and product water between flow field and Catalytic Layer, is the pass for influencing electrode performance
One of key member.
Body diffused layer occupies very important effect in the performance of membrane electrode, the main collection for playing electric current, support
Catalyst carries out the important function such as coordinated management to water, gas and heat.Existing fuel battery gas diffusion layer is mostly with carbon paper, carbon
Fibrous paper, carbon cloth etc. make the substrate of diffusion layer.It is necessary to meet following condition for the selection of diffusion layer: (1) uniform porous structure,
Assign its excellent permeability；(2) low resistivity assigns its high electronic conduction ability；(3) close structure and surface are flat
It is whole, reduce contact resistance, improves electric conductivity；(3) there is preferable mechanical strength, it is ensured that be able to bear long-time percussive pressure
Power.
Existing carbon fiber paper is at high cost, relies primarily on import, such as Ba Lade company, Canada, SGL technology company, Germany and
The several foreign corporations such as toray company.And existing carbon fiber paper embrittlement, impact resistant strength is low, especially thin layer
It is easily broken afterwards, influences the service life in fuel cell.Carbon fiber woven cloth, non-woven carbon cloth have good elasticity, no
It easily snaps off, compressive property is good, but excessively softness causes membrane electrode easily-deformable, leads to falling off for catalyst.Therefore, new gas
The research and application of diffusion layer are paid close attention to by people.
Chinese invention patent application number 200710144347.3 discloses a kind of gas for preparing Proton Exchange Membrane Fuel Cells
The method of body diffused layer.Steps are as follows: (1) by carbon paper be immersed in 10 ~ 50wt% carbohydrate or hydrocarbon polymer it is water-soluble
30 ~ 80min in liquid, dry 20 under the conditions of 50 ~ 80 DEG C ~ for 24 hours, then under conditions of 350 ~ 400 DEG C, Ar gas shielded, in pipe
30 ~ 60min is sintered in formula furnace；(2) repetitive operation step 11 time；(3) carbon paper after carbonization is immersed in 5 ~ 20wt% polytetrafluoro
In vac emulsion 10 ~ 30min to get arrive carbon paper carbonizing and modifying gas diffusion layer of proton exchange membrane fuel cell.The invention obtains
Product in polytetrafluoroethylene (PTFE) carrying capacity be 10 ~ 20wt%.
Chinese invention patent application number 201410768095.1 discloses a kind of new fuel cell carbon nanotube gas
Diffusion layer and its preparation method and application, by carbon nanotube, the growth in situ on macropore carbon base supporting layer is made the diffusion layer, carbon
Nanotube is with a thickness of 1 ~ 50 μm；Carbon nanotube concentration is grown in macropore carbon base supporting layer close to the side of Catalytic Layer, since carbon is received
Mitron has strong-hydrophobicity, therefore carbon nanotube is concentrated on the inside of the gas diffusion layers of growth with hydrophobicity, no hydrophobic binder
Contact angle is 130 ~ 150 ° in the case where addition, and this gas diffusion layers do not need additionally to add hydrophobing agent, Neng Goutong in inside
When have good hydrophobic, conductive and mass transfer ability, can be improved the output performance under fuel cell high current density.
According to above-mentioned, embrittlement when using carbon fiber paper for the gas diffusion layers of fuel cell in existing scheme, impact resistance
Intensity is low, and the method by increasing the increases rigidity such as metal mesh, substrate, haves the defects that complex process, and compound gold
Category net, substrate will lead to thickness increase, influence gas diffusion.
Summary of the invention
Wider fuel battery gas diffusion layer is applied at present, and using carbon fiber paper, there are embrittlement, impact resistant strength are low
Defect, and there are problems that being readily bent deformation using carbon cloth, the invention proposes a kind of polymer matrix gas diffusion layer of sheet material
And preparation method, it can effectively solve above-mentioned technical problem.
To solve the above problems, the invention adopts the following technical scheme:
A kind of preparation method of polymer matrix gas diffusion layer of sheet material, the detailed process of preparation are as follows:
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, and sufficiently impregnates
After take out, be then aged, wash, is dry, finally at 180 ~ 220 DEG C, jockey pulley drawing and setting is made polymer matrix gas and expands
Dissipate layer of sheet material.
Preferably, step (1) polymeric substrate is heat-resisting quantity polymer, can be polyethersulfone ketone, the miscellaneous naphthalene connection of sulfonation
The miscellaneous naphthalene connection of benzene polyethersulfone ketone, Phthalazinone polyether sulfone, carboxylation inbred group breeding, sulfonation Phthalazinone polyether sulfone, carboxylation
One of benzene polyether sulfone, polybenzimidazoles.
Preferably, step (1) solvent is dimethylformamide, dimethyl acetamide, N-Methyl pyrrolidone, chloroform
One of.
Preferably, step (1) conductive agent is at least one of acetylene black, carbon nanotube, graphene microchip.
Preferably, in step (1): 32 ~ 36 parts by weight of polymeric substrate, 30 ~ 46 parts by weight of solvent, nanometer silicone powder 3 ~ 6
Parts by weight, 5 ~ 7 parts by weight of conductive agent, 5 ~ 6 parts by weight of carbon fiber, 4 ~ 7 parts by weight of polymeric aluminum, 5 ~ 8 parts by weight of calcium chloride.
Preferably, step (2) release film is one of PET release film, PE release film, OPP release film.
Preferably, in step (3): 10 ~ 15 parts by weight of sodium sulphate, 30 ~ 35 parts by weight of silicic acid, 50 ~ 60 parts by weight of water.
Preferably, the time of step (3) described immersion is 1 ~ 2h.
Preferably, the temperature of step (3) described ageing is 25 ~ 35 DEG C, and the time is 24 ~ 25h.
Preferably, the draw ratio of step (3) described drawing and setting is 3-5 times.
A kind of polymer matrix gas diffusion layer of sheet material prepared by the above method, disperses polymeric substrate in molten
Agent, high-speed stirred form fine and smooth pulpous state, and nanometer silicone powder, conductive agent, carbon fiber, polymeric aluminum, calcium chloride, dispersion is then added
It is even, prepare painting slurry；Painting slurry is continuously scratched in release film, dry, removing removal release film is polymerize
Object basement membrane；Basement membrane is immersed by impregnating in the compound liquid of sodium sulphate, silicic acid, then takes out, is aged, washing is dry, in tension
Drawing and setting under the action of roller.
The present invention provides a kind of polymer matrix gas diffusion layer of sheet material and preparation methods, compared with prior art, dash forward
Out the characteristics of and excellent effect are:
1, it proposes the method for polymer, inorganic matter fusion preparation polymer matrix gas diffusion layer of sheet material.
2, by the way that polymeric aluminum, calcium chloride are pre-dispersed in polymeric substrate film forming, it is easy to silicic acid using aluminium ion, calcium ion
Forming the characteristic that calcium silicates condensation is strengthened hardens polymer-based film in situ, to assign diffusion tunic excellent polymer flexibility
With calcium silicates rigidity, obtained diffusion sheet has excellent impact resistance, indeformable, not broken, substantially mentions for fuel cell
Rise the service life of fuel cell.
3, the same of the ageing of calcium silicates is formed in situ in aluminium ion, calcium ion and silicic acid in gas diffusion piece produced by the present invention
When, by-product is soluble matter, is easy into uniform micropore by washing, micropore size is easy to gas free diffusing at 7 ~ 10 μm.
4, the present invention reasonably merges polymer, inorganic matter, so that gas diffusion layers have both rigidity and tensile strength, silicon
Ketone powder makes diffusion layer have excellent hydrophobicity, can in time export the water of generation.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；Polymeric substrate is polyethersulfone ketone；Solvent is diformazan
Base formamide；Conductive agent is acetylene black；
Wherein: 33 parts by weight of polymeric substrate, 41 parts by weight of solvent, 4 parts by weight of nanometer silicone powder, 6 parts by weight of conductive agent, carbon fiber
Tie up 5 parts by weight, 5 parts by weight of polymeric aluminum, 6 parts by weight of calcium chloride；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；Release film is PET release film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, in which: sulfuric acid
11 parts by weight of sodium, 31 parts by weight of silicic acid, 58 parts by weight of water；It is taken out after abundant immersion, is then aged, washs, is dry, finally opened
5 times of sizings are stretched under the action of 185 DEG C of power roller, and polymer matrix gas diffusion layer of sheet material is made；The time of immersion is 1h；Ageing
Temperature is 26 DEG C, time 25h.
Embodiment 2
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；Polymeric substrate is polyethersulfone ketone；Solvent is diformazan
Yl acetamide；Conductive agent is carbon nanotube；
Wherein: 35 parts by weight of polymeric substrate, 35 parts by weight of solvent, 5 parts by weight of nanometer silicone powder, 6 parts by weight of conductive agent, carbon fiber
Tie up 6 parts by weight, 6 parts by weight of polymeric aluminum, 7 parts by weight of calcium chloride；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；Release film is PE release film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, in which: sulfuric acid
14 parts by weight of sodium, 34 parts by weight of silicic acid, 52 parts by weight of water；It is taken out after abundant immersion, is then aged, washs, is dry, finally opened
4 times of sizings are stretched under the action of 210 DEG C of power roller, and polymer matrix gas diffusion layer of sheet material is made；The time of immersion is 2h；Ageing
Temperature is 32 DEG C, and the time is for 24 hours.
Embodiment 3
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；Polymeric substrate is polyethersulfone ketone；Solvent is N- first
Base pyrrolidones；Conductive agent is graphene microchip；
Wherein: 32 parts by weight of polymeric substrate, 46 parts by weight of solvent, 3 parts by weight of nanometer silicone powder, 5 parts by weight of conductive agent, carbon fiber
Tie up 5 parts by weight, 4 parts by weight of polymeric aluminum, 5 parts by weight of calcium chloride；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；Release film is OPP release film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, in which: sulfuric acid
10 parts by weight of sodium, 30 parts by weight of silicic acid, 60 parts by weight of water；It is taken out after abundant immersion, is then aged, washs, is dry, finally opened
3 times of sizings are stretched under the action of 180 DEG C of power roller, and polymer matrix gas diffusion layer of sheet material is made；The time of immersion is 1h；Ageing
Temperature is 25 DEG C, time 25h.
Embodiment 4
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；Polymeric substrate is polyethersulfone ketone；Solvent is chlorine
It is imitative；Conductive agent is acetylene black；
Wherein: 36 parts by weight of polymeric substrate, 30 parts by weight of solvent, 6 parts by weight of nanometer silicone powder, 7 parts by weight of conductive agent, carbon fiber
Tie up 6 parts by weight, 7 parts by weight of polymeric aluminum, 8 parts by weight of calcium chloride；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；Release film is PET release film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, in which: sulfuric acid
15 parts by weight of sodium, 35 parts by weight of silicic acid, 50 parts by weight of water；It is taken out after abundant immersion, is then aged, washs, is dry, finally opened
5 times of sizings are stretched under the action of 220 DEG C of power roller, and polymer matrix gas diffusion layer of sheet material is made；The time of immersion is 2h；Ageing
Temperature is 35 DEG C, and the time is for 24 hours.
Embodiment 5
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；Polymeric substrate is polyethersulfone ketone；Solvent is diformazan
Base formamide；Conductive agent is carbon nanotube；
Wherein: 34 parts by weight of polymeric substrate, 38 parts by weight of solvent, 5 parts by weight of nanometer silicone powder, 6 parts by weight of conductive agent, carbon fiber
Tie up 5 parts by weight, 5 parts by weight of polymeric aluminum, 7 parts by weight of calcium chloride；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；Release film is PE release film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, in which: sulfuric acid
13 parts by weight of sodium, 33 parts by weight of silicic acid, 54 parts by weight of water；It is taken out after abundant immersion, is then aged, washs, is dry, finally opened
3 times of sizings are stretched under the action of 190 DEG C of power roller, and polymer matrix gas diffusion layer of sheet material is made；The time of immersion is 1.5h；Ageing
Temperature be 29 DEG C, time 24.5h.
Embodiment 6
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；Polymeric substrate is polyethersulfone ketone；Solvent is diformazan
Yl acetamide；Conductive agent is graphene microchip；
Wherein: 34 parts by weight of polymeric substrate, 38 parts by weight of solvent, 4 parts by weight of nanometer silicone powder, 6 parts by weight of conductive agent, carbon fiber
Tie up 6 parts by weight, 6 parts by weight of polymeric aluminum, 6 parts by weight of calcium chloride；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；Release film is OPP release film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, in which: sulfuric acid
12 parts by weight of sodium, 33 parts by weight of silicic acid, 55 parts by weight of water；It is taken out after abundant immersion, is then aged, washs, is dry, finally opened
4 times of sizings are stretched under the action of 200 DEG C of power roller, and polymer matrix gas diffusion layer of sheet material is made；The time of immersion is 2h；Ageing
Temperature is 30 DEG C, time 24.5h.
Comparative example 1
Comparative example 1 does not add polymeric aluminum and calcium chloride, and other conditions are same as Example 6, gas diffusion layer of sheet material obtained.
The tensile index of testing example 1-6, comparative example 1 test porosity with mercury injection method, such as table 1.
Table 1:
| Performance indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example 1 |
| Thickness (mm) | 0.25 | 0.3 | 0.20 | 0.30 | 0.3 | 0.3 | 0.3 |
| It is anti-to rise by index (Nm/g) | 82.3 | 93.4 | 72.6 | 95.3 | 9.2 | 91.8 | 23.2 |
| Porosity | 64 | 61 | 66 | 62 | 60 | 67 | 28 |
Claims (10)
1. a kind of preparation method of polymer matrix gas diffusion layer of sheet material, which is characterized in that the detailed process of preparation are as follows:
(1) first polymeric substrate is added in solvent, high-speed stirred forms fine and smooth pulpous state, and nanometer silicone powder, conduction is then added
Agent, carbon fiber, polymeric aluminum, calcium chloride, are uniformly dispersed, and painting slurry is made；
(2) first painting slurry made from step (1) is continuously scratched in release film, is then dried in vacuo, then remove removal
Release film obtains polymer-based film；
(3) polymer-based film for first obtaining step (2) immerses the composite fluid that sodium sulphate, silicic acid and water are prepared, and sufficiently impregnates
After take out, be then aged, wash, is dry, at last 180 ~ 220 DEG C, polymer matrix gas diffusion is made in jockey pulley drawing and setting
Layer of sheet material.
2. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(1) polymeric substrate is heat-resisting quantity polymer, poly- for polyethersulfone ketone, sulfonation inbred group breeding, Phthalazinone
Ether sulfone, carboxylation inbred group breeding, sulfonation Phthalazinone polyether sulfone, carboxylation Phthalazinone polyether sulfone, in polybenzimidazoles
One kind.
3. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(1) solvent is one of dimethylformamide, dimethyl acetamide, N-Methyl pyrrolidone, chloroform.
4. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(1) conductive agent is at least one of acetylene black, carbon nanotube, graphene microchip.
5. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(1) in: 32 ~ 36 parts by weight of polymeric substrate, 30 ~ 46 parts by weight of solvent, 3 ~ 6 parts by weight of nanometer silicone powder, 5 ~ 7 weight of conductive agent
Part, 5 ~ 6 parts by weight of carbon fiber, 4 ~ 7 parts by weight of polymeric aluminum, 5 ~ 8 parts by weight of calcium chloride.
6. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(2) release film is one of PET release film, PE release film, OPP release film.
7. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(3) in: 10 ~ 15 parts by weight of sodium sulphate, 30 ~ 35 parts by weight of silicic acid, 50 ~ 60 parts by weight of water.
8. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(3) temperature of the ageing is 25 ~ 35 DEG C, and the time is 24 ~ 25h.
9. a kind of preparation method of polymer matrix gas diffusion layer of sheet material according to claim 1, it is characterised in that: step
(3) draw ratio of the drawing and setting is 3-5 times.
10. a kind of polymer matrix gas diffusion layer of sheet material that any one of claim 1 ~ 9 the method is prepared.
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