CN103779515B - A kind of fuel cell sealant and preparation method thereof - Google Patents
A kind of fuel cell sealant and preparation method thereof Download PDFInfo
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- CN103779515B CN103779515B CN201410014082.5A CN201410014082A CN103779515B CN 103779515 B CN103779515 B CN 103779515B CN 201410014082 A CN201410014082 A CN 201410014082A CN 103779515 B CN103779515 B CN 103779515B
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- 239000000446 fuel Substances 0.000 title claims abstract description 56
- 239000000565 sealant Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000000853 adhesive Substances 0.000 claims abstract description 31
- 230000001070 adhesive effect Effects 0.000 claims abstract description 31
- 238000012856 packing Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- -1 polypropylene Polymers 0.000 claims description 20
- 239000004698 Polyethylene Substances 0.000 claims description 14
- 229920000573 polyethylene Polymers 0.000 claims description 14
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 14
- 239000000741 silica gel Substances 0.000 claims description 10
- 229910002027 silica gel Inorganic materials 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 239000005026 oriented polypropylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920006305 unsaturated polyester Polymers 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920002396 Polyurea Polymers 0.000 claims description 2
- QXOXHPTYHCESTD-UHFFFAOYSA-N SBS Chemical compound SBS QXOXHPTYHCESTD-UHFFFAOYSA-N 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims 1
- 229920000915 polyvinyl chloride Polymers 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 47
- 238000007789 sealing Methods 0.000 abstract description 34
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000007731 hot pressing Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 33
- 239000007789 gas Substances 0.000 description 13
- 239000008393 encapsulating agent Substances 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 235000019589 hardness Nutrition 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920006280 packaging film Polymers 0.000 description 3
- 239000012785 packaging film Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011799 hole material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
-
- 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
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention discloses a kind of fuel cell sealant, comprise release film layer and from two each sides of described release film layer respectively to superpose the adhesive glue-line of setting, base film and elastic packing glue-line successively.Fuel cell sealant of the present invention solves the interior sealing of fuel battery inside membrane electrode and the external seal between membrane electrode and bipolar plates simultaneously, raw material are saved, at room temperature there is good cementability, without hot pressing, decrease the sealing process time of membrane electrode, improve production efficiency, interior outer seal material is united two into one simultaneously, be convenient to the automated production of fuel cell pile, the industrialization of fuel cell is had great importance.
Description
Technical field
The invention belongs to field of fuel cell technology, relate to a kind of fuel cell sealant and preparation method thereof particularly.
Background technology
Fuel cell with the high and low noise of its transformation efficiency, without the advantage such as discharge, more and more accept by butcher,baker,and the candlestick maker scholar.Hydrogen is under the effect of the catalyst of the positive plate of fuel cell, and generate proton and electronics, proton is through proton exchange membrane, arrive fuel battery negative pole, and electronics is not by proton exchange membrane, can only through external circuit, arrive fuel battery negative pole plate, thus in external circuit generation current.Electronics recombines as water with oxygen atom and proton after arriving negative electrode.Because hydrogen molecule diameter is less, bring very large difficulty to the sealing of fuel cell.Silica type, acrylic compounds that the encapsulant of present fuel cell mostly adopts other industry to use, substantially be three layers of formation, additional one deck release film after base material applying glue-line, what have just applies one deck glue on base material, is not easy to very much the sealing of inside battery membrane electrode (MEA).
Traditional method realizing membrane electrode sealing comprises and being located in the double-edged seal groove of baffler or in plane by seal, and some exceeds the surface of baffler respectively, reaches sealing effectiveness with the base material film in membrane electrode by compression mode; Or neat cutting is carried out to membrane electrode, and reach the object of sealing after the surrounding elastomer of membrane electrode compresses with the seal groove on corresponding baffler.The sealing device adopted in European patent EP 0604683A1 comprises air inlet, proton exchange membrane, seal and carbon paper, wherein, both sides porous support material carbon paper on membrane electrode is extended greatly the active region of membrane electrode, encapsulant is placed in the proton exchange membrane of membrane electrode, the two pieces of bafflers clamping membrane electrode so do not need to place encapsulant again.But the defect that above-mentioned encapsulating method exists is: because fuel cell pack is assembled together by more multiple membrane electrode and bipolar plate combination, and end plate must bear larger uniform fastening force before and after fuel cell pack, seal is made to have certain elastic deformation, and touch with membrane electrode, bipolar plates tightly, just can reach sealing effectiveness.Therefore, the surface of this seal is under the effect of long fastening force, and the membrane electrode be in contact with it, bipolar plate surfaces all can produce adhesion.
Disclose a kind of for the flow-guide double-pole plate of fuel cell or the hermetically-sealed construction of membrane electrode in patent 200510023723 " a kind of for the flow-guide double-pole plate of fuel cell or the hermetically-sealed construction of membrane electrode ", comprise flow-guide double-pole plate or membrane electrode, seal, wherein, seal is just being arranged on flow-guide double-pole plate or membrane electrode, antisymmetry position, the position that seal is set at flow-guide double-pole plate or membrane electrode has multiple connecting through hole, just be arranged on flow-guide double-pole plate or membrane electrode, two seals of reverse side are linked together by above-mentioned multiple connecting through hole material identical with itself.It achieves when flow-guide double-pole plate is separated with membrane electrode, and its seal is not yielding, also can not come off, but it needs to process membrane electrode surface, and cost is large, complicated operation.
A kind of packaging film comprising backing layer and adhesive layer is disclosed in patent 200480023765 " sealing of membrane electrode assembly ", in order to realize the sealing to membrane electrode, need to prepare two packaging films simultaneously, article one, be arranged on the outer surface of gas diffusion substrate, another one packaging film is arranged on the inner surface of gas diffusion substrate, simultaneously in order to reach better sealing effectiveness, need MEA to pre-set one or more pad, grasped process complicated, add the sealing process time of MEA, be unfavorable for automated production.And sealing effectiveness is also not fully up to expectations.
Summary of the invention
Goal of the invention: for solving the technical problem existed in prior art, the present invention proposes a kind of fuel cell sealant and preparation method thereof, this material not only solves and seals in membrane electrode, and solves the external seal of the pile between membrane electrode and bipolar plates, good sealing effect.
Technology contents: for realizing above-mentioned technical purpose, the present invention proposes a kind of fuel cell sealant, comprise release film layer and from two sides of described release film layer respectively to superpose the adhesive glue-line of setting, base film and elastic packing glue-line successively.
Wherein, the making material of described base film be selected from polypropylene (PP), polyethylene (PE), PETG (PET), PEN (PEN), polyvinyl chloride (PVC), Merlon (PC), polyimides (PI), Kynoar (PVDF), polytetrafluoroethylene (PTFE), polystyrene (PS), polyvinyl alcohol (PVA) or polyamide (PA) any one; The making material of described adhesive glue-line be selected from butadiene-styrene rubber, SIS, organic silica gel, silica gel, SBS, acrylate copolymer, polyurethanes glue, acrylic compounds glue, phenolic resins, epoxy resin, acrylonitrile-butadiene rubber, pollopas, unsaturated polyester (UP) or neoprene any one; The making material of described elastic packing glue-line be selected from rubber-like, silica type, polyurethanes and polyureas any one; The making material of described release film layer be selected from PETG (PET), fluorine material, low-pressure polyethylene (LDPE), polyethylene from high pressure process (HDPE), oriented polypropylene (BOPP) and polyethylene (PE) any one, wherein, described fluorine material is preferably polytetrafluoroethylene (PTFE).
Preferably, the making material of described base film is PETG (PET); The making material of described adhesive glue-line is organic silica gel or silica gel; The making material of described elastic packing glue-line is silica type material, as 706 silica gel, high-temperature silica gel (HS-1860), and its good springiness, applied widely; The making material of described release film layer be selected from PETG (PET), oriented polypropylene (PP) and polyethylene (PE) any one, these material sources are extensive, and price is suitable.Under above-mentioned preferred condition, prepared fuel cell sealant has good sealing property.
The thickness of described base film is 0.01-1mm; The thickness of described adhesive glue-line is 1-100 μm; The thickness of described elastic packing glue-line is 0.01-3mm.
Preferably, the thickness of described base film is 0.1-0.3mm; The thickness of described adhesive glue-line is 10-50 μm; The thickness of described elastic packing glue-line is 0.4-1.2mm.
The thickness of the thickness of above-mentioned base film, the thickness of release film layer, adhesive glue-line and the thickness of elastic packing glue-line can be selected the requirement of mechanical strength according to concrete needs and reality.
The invention allows for the preparation method of above-mentioned fuel cell material, it is characterized in that, comprise the steps:
(A) at 25 DEG C, at a side coating layer of adhesive glue-line of base film, another side coating elastic packing glue-line, form sealant structure, the viscosity of adhesive is at 3000-10000cP;
(B) after the adhesive curable adhesive layer in Rotating fields to be sealed, control hardness at 20-60 shore hardness, again by two-layer sealant symmetrical configuration compound, by the isolation of one deck release film layer between two layers of adhesive glue-line, obtain described fuel cell sealant.
Fuel cell sealant of the present invention, by process to base film, forms adhesive glue-line at application of adhesive, another side coating elastic packing glue-line, forms an overall sealant structure; After to be bonded dose of curable adhesive layer, two-layer sealant structure is carried out compound, isolated by release film layer between two-layer sealant structure.When using, as long as open from release film layer, by the face scribbling adhesive respectively symmetrical be bonded at need sealing film on, then slightly apply certain pressure, sealing material and fuel battery inside membrane electrode can be made to reach good sealing effectiveness.Membrane electrode surrounding after sealing has elastic packing glue-line, and in fuel cell pack, due to the effect of dress heap pressure, elastic packing glue-line is tightly attached to the both sides of bipolar plates, thus reaches fuel cell pack internal membrane electrode and bipolar plates seals.
Beneficial effect: compared with prior art, tool of the present invention has the following advantages:
(1) by all arranging sealant structure in two sides of release film layer, be conducive to manual production and the automated production of the sealing of membrane electrode, the interior sealing of fuel cell membrane electrode can better be carried out and the use amount of release film can be saved, simultaneously owing to being both sides symmetrical structures, the production efficiency of encapsulant can be improved.
(2) encapsulant of the present invention is provided with separately elastic packing glue-line, owing to being be coated in outside, adding the viscous force of elastic sealing layer and basic unit, is conducive to the external seal of fuel cell pile; Be simultaneously with base material due to elastic sealing layer and bond the outer surface that glue-line is bonded in membrane electrode frame simultaneously, decrease the fuel battery inside encapsulant production time, improve production efficiency, be conducive to automated fuel cell production.Further, due to the existence of elastic sealing layer, decrease the processing to bipolar plates seal groove, saved the processing cost of bipolar plates, reduce the technical requirement of bipolar plates processing.
(3) fuel cell sealant of the present invention solves the interior sealing of fuel battery inside membrane electrode and the external seal between membrane electrode and bipolar plates simultaneously, under having saved raw material, room temperature, there is good cementability, without hot pressing, decrease the sealing process time of membrane electrode (MEA), improve production efficiency, interior outer seal material unites two into one, be convenient to the automated production of fuel cell pile, the industrialization of fuel cell is had great importance.
Accompanying drawing explanation
Fig. 1 is the structural representation of fuel cell sealant of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further explained.
Embodiment 1
A kind of fuel cell sealant, as shown in Figure 1, comprises release film layer 4 and is arranged at the adhesive glue-line 3 of described release film layer 4 two side, base film 2 and elastic packing glue-line 1 respectively successively symmetrically.It is prepared by the following method:
(A) at 25 DEG C, at a side coating layer of adhesive glue-line 3 of base film 2, another side coating elastic packing glue-line 1, trilaminate material forms an overall sealant structure, and the viscosity of adhesive is at about 5000cP;
(B) after the adhesive glue-line 3 in Rotating fields to be sealed solidifies, control hardness about 40 shore hardnesses, again by two-layer sealant symmetrical configuration compound, isolated by one deck release film layer 4 between two layers of adhesive glue-line 3, obtain described fuel cell sealant.
Wherein, above-mentioned base film 2 material is PET, and base material thickness is 0.2mm; The material of adhesive glue-line 3 is organic silica gel, and coating thickness is 45 μm; The material of elastic packing glue-line 1 is 706 silica gel, and coating thickness is 0.8mm, and release film layer 1 is PET.
In use, encapsulant is opened from release film layer, by the face scribbling adhesive respectively symmetrical be bonded at need sealing film on, then slightly apply certain pressure, sealing material and fuel battery inside membrane electrode can be made to reach good sealing effectiveness.
Encapsulant sealing effectiveness is tested:
(1) by sealing material adhesive on membrane electrode, ensure membrane electrode air tight, according to this kind of method, process 10 membrane electrodes;
(2) membrane electrode and bipolar plates that post sealing material are assembled into the pile of 10, dress heap pressure is within the scope of 0.5-1T;
(3) blocked the gas outlet of pile, air inlet is inflated, and increases pressure gradually, observes the gas leak phenomenon of pile.
Result shows, when gas pressure 0.5MPa time, pile does not leak outside phenomenon, and when gas pressure reaches 0.6MPa time, phenomenon appears leaking outside a little in pile, and when gas pressure is 0.7Mpa, the pile phenomenon that leaks outside is serious.Do contrast test with common encapsulant, the same step of test process (1)-(3), result shows, when gas pressure reaches 0.2MPa time, sealing gasket is blown out by gas, and pile seriously leaks outside.As can be seen from test data above, fuel cell sealant sealing property of the present invention is better than encapsulant common on market.
Embodiment 2 ~ 8
A kind of fuel cell sealant, its basic structure and preparation method are with embodiment 1, and method for testing tightness is also with embodiment 1, and difference is in table 1.
Table 1
The composition of material therefor of the present invention is not limited to material listed in table, and the thickness of each layer and selection those skilled in the art of material can select the requirement of mechanical strength with reality as required.Encapsulant prepared by above-described embodiment 2 reaches 0.4MPa at pile internal gas pressure, pile is all without the phenomenon that leaks outside, and the sealing characteristics of fuel cell sealant prepared by embodiment 3, when gas pressure is 0.5MPa, pile, all without the phenomenon that leaks outside, when gas pressure is 0.6MPa, only has a little pile to leak outside phenomenon, when gas pressure is 0.7MPa time, the pile phenomenon that leaks outside is serious.
Fuel cell sealant of the present invention solves the interior sealing of fuel battery inside membrane electrode and the external seal between membrane electrode and bipolar plates simultaneously, raw material are saved, there is under room temperature good cementability, without hot pressing, decrease the sealing process time of membrane electrode (MEA), improve production efficiency, interior outer seal material is united two into one simultaneously, improve pile and resist the ability leaked outside, be convenient to the automated production of fuel cell pile, the industrialization of fuel cell is had great importance.
Claims (8)
1. a fuel cell sealant, it is characterized in that, comprise release film layer (4) and from two sides of described release film layer (4) respectively to superpose the adhesive glue-line (3) of setting, base film (2) and elastic packing glue-line (1) successively.
2. fuel cell sealant according to claim 1, it is characterized in that, the making material of described base film (2) be selected from polypropylene, polyethylene, PETG, PEN, polyvinyl chloride, Merlon, polyimides, Kynoar, polytetrafluoroethylene, polystyrene, polyvinyl alcohol or polyamide any one; The making material of described adhesive glue-line (3) be selected from butadiene-styrene rubber, SIS, silica gel, SBS, acrylate copolymer, polyurethanes glue, acrylic compounds glue, phenolic resins, epoxy resin, acrylonitrile-butadiene rubber, pollopas, unsaturated polyester (UP) or neoprene any one; The making material of described elastic packing glue-line (1) be selected from rubber-like, silica type, polyurethanes and polyureas any one; The making material of described release film layer (4) be selected from PETG, fluorine material, oriented polypropylene or polyethylene any one.
3. fuel cell sealant according to claim 2, is characterized in that, described fluorine material is polytetrafluoroethylene.
4. fuel cell sealant according to claim 2, is characterized in that, the making material of described base film (2) is PETG; The making material of described adhesive glue-line (3) is organic silica gel; The making material of described elastic packing glue-line (1) is silica type material; The making material of described release film layer (4) be selected from PETG, oriented polypropylene and polyethylene any one.
5. fuel cell sealant according to claim 4, is characterized in that, described polyethylene is polyethylene from high pressure process or low-pressure polyethylene.
6. fuel cell sealant according to claim 1, is characterized in that, the thickness of described base film (2) is 0.01-1mm; The thickness of described adhesive glue-line (3) is 1-100 μm; The thickness of described elastic packing glue-line (1) is 0.01-3mm.
7. fuel cell sealant according to claim 6, is characterized in that, the thickness of described base film is 0.1-0.3mm; The thickness of described adhesive glue-line (3) is 10-50 μm; The thickness of described elastic packing glue-line is 0.4-1.2mm.
8. the preparation method of fuel cell sealant according to claim 1, is characterized in that, comprises the steps:
(A) at 25 DEG C, side coating layer of adhesive glue-line (3) of base film (2), another side coating elastic packing glue-line (1), form sealant structure, the viscosity of adhesive is at 3000-10000cP;
(B) after adhesive glue-line (3) solidification in Rotating fields to be sealed, control hardness at 20-60 shore hardness, again by two-layer sealant symmetrical configuration compound, by one deck release film layer (4) isolation between two layers of adhesive glue-line (3), obtain described fuel cell sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014082.5A CN103779515B (en) | 2014-01-13 | 2014-01-13 | A kind of fuel cell sealant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014082.5A CN103779515B (en) | 2014-01-13 | 2014-01-13 | A kind of fuel cell sealant and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103779515A CN103779515A (en) | 2014-05-07 |
| CN103779515B true CN103779515B (en) | 2015-12-02 |
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| CN105161734B (en) * | 2015-08-05 | 2018-01-05 | 中国科学院宁波材料技术与工程研究所 | A kind of preparation method of catalyst pulp and air cathode |
| CN106084265A (en) * | 2016-05-25 | 2016-11-09 | 朱肖楠 | A kind of heat lamination composite and preparation method thereof |
| US10865330B2 (en) | 2016-07-28 | 2020-12-15 | 3M Innovative Properties Company | Segmented silicone polyamide block copolymers and articles containing the same |
| CN109476815B (en) | 2016-07-28 | 2021-05-04 | 3M创新有限公司 | Segmented silicone polyamide block copolymers and articles comprising the same |
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| CN109986735B (en) * | 2019-04-30 | 2024-06-14 | 石家庄贝克密封科技股份有限公司 | Pile gasket for hydrogen energy battery, production die and production process thereof |
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Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215313 Yu Yang Road No. 299, room 3 Patentee after: Jiangsu hydrogen power new energy Co., Ltd. Address before: 215313 Jiangsu Province, Kunshan City, Yushan City, Yu Yang Road, No. 777, China Energy Saving Industrial Park, No. 3, building 20, No. Patentee before: Jiangsu Lv Yao fuel cell system Manufacturing Co., Ltd |