CN109119641A - A kind of conductive plastic bi-polar plate manufacturing process - Google Patents
A kind of conductive plastic bi-polar plate manufacturing process Download PDFInfo
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- CN109119641A CN109119641A CN201811040914.5A CN201811040914A CN109119641A CN 109119641 A CN109119641 A CN 109119641A CN 201811040914 A CN201811040914 A CN 201811040914A CN 109119641 A CN109119641 A CN 109119641A
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- polar plate
- conductive
- manufacturing process
- conductive plastic
- plate manufacturing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8875—Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
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- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention provides a kind of conductive plastic bi-polar plate manufacturing process, include the following steps: step 1: matrix resin being quantitatively pre-mixed with auxiliary agent and then is mixed with conductive agent, is kneaded by being sufficiently mixed, obtains bipolar plates base-material, is stored into freezer；Step 2: using metal die, throw after cavity surface nitrogen-hardening or chromium plating to mirror surface, and to mold heating and temperature control is at 150-170 DEG C；Step 3: accurate weighing bipolar plates base-material is evenly distributed in mold by dispersing jig, is pressed and molded intermediate processed；Step 4: after demoulding, intermediate merging two layers of surface being thrown in flat metal plate, and sizing cooling obtains conductive plastic bi-polar plate.Conductive plastic bi-polar plate manufacturing process provided by the invention, the conductive plastic bi-polar plate of manufacture are thermosetting material, and bending strength>80 MPa, sheet resistance<1.0 meet flow battery demand of new generation, and molding cycle is 90 ~ 120 seconds, is suitble to industrialized production.
Description
Technical field
The present invention relates to bipolar plate technology field more particularly to a kind of conductive plastic bi-polar plate manufacturing process.
Background technique
Vanadium flow battery just gradually starts to obtain market approval and application as extensive energy-storage battery.And flow battery
Important component bipolar plates, performance also increasingly paid close attention in the industry with the service life.Conventional, the bipolar plates of flow battery
There are two types of modes: graphite plate and conductive plastics, and wherein graphite plate under the conditions of overcharging because be easy by electrochemical etching, when serious
It even generates corrosion to penetrate, seriously affects application of the graphite plate as bipolar plate of redox flow battery；And conductive plastics, because it is good
Processability and corrosion resistance, be increasingly becoming the mainstream of bipolar plate of redox flow battery.But general conductive plastic bi-polar plate is mostly
Thermoplastic material, usually polyethylene (PE) material obtain high filling by adding various conductive fillers (carbon black, graphite, etc.)
Special conductive plastics, then by squeezing out or compression-molding process, be made and can be used for the thin plate of flow battery, but with regard to electric conductivity and
Speech, sheet resistivity is still 10 or so, much smaller than general conductive plastics, but for the second generation/third battery eliminator, electric conductivity
Still insufficient, molding cycle is long, is not suitable for industrialized production.
In view of this, it is necessary to conductive plastic bi-polar plate manufacturing process in the prior art be improved, on solving
State problem.
Summary of the invention
It is an object of the invention to disclose a kind of conductive plastic bi-polar plate manufacturing process, the conductive plastic bi-polar plate of manufacture is
Thermosetting material, bending strength>80 MPa, sheet resistance<1.0 meet flow battery demand of new generation, and molding cycle be 90 ~
120 seconds, it is suitble to industrialized production.
To achieve the above object, the present invention provides a kind of conductive plastic bi-polar plate manufacturing process, include the following steps:
Step 1: matrix resin being quantitatively pre-mixed with auxiliary agent and then is mixed with conductive agent, is kneaded, is obtained by being sufficiently mixed
To bipolar plates base-material, stored into freezer；
Step 2: using metal die, throw after cavity surface nitrogen-hardening or chromium plating to mirror surface, and to mold heating and temperature control exists
150-170℃；
Step 3: accurate weighing bipolar plates base-material is evenly distributed in mold by dispersing jig, and compression molding system is intermediate
Body；
Step 4: after demoulding, intermediate merging two layers of surface being thrown in flat metal plate, and sizing cooling obtains conductive plastics
Bipolar plates.
In some embodiments, described matrix resin is epoxy vinyl ester resin.
In some embodiments, the auxiliary agent is curing agent or one or more of release agent or processing aid.
In some embodiments, the conductive agent is conductive black or electrically conductive graphite or carbon nanotube or graphene or carbon
One or more of fiber.
In some embodiments, described to be heated to be heat-conducting oil heating or electrical bar heating.
In some embodiments, die shear side thickness control is within 0.03mm.
Compared with prior art, the beneficial effects of the present invention are: conductive plastic bi-polar plate manufacturing process provided by the invention,
The conductive plastic bi-polar plate of manufacture is thermosetting material, and bending strength>80 MPa, sheet resistance<1.0 meet liquid stream electricity of new generation
Pond demand, and molding cycle is 90 ~ 120 seconds, is suitble to industrialized production.
Specific embodiment
Below with reference to each embodiment, the present invention is described in detail, but it should be stated that, these embodiments are simultaneously
Non- limitation of the present invention, those of ordinary skill in the art are according to these embodiments in made function, method or structure
Equivalent transformation or substitution, all belong to the scope of protection of the present invention within.
Embodiment one:
Present embodiment discloses a kind of conductive plastic bi-polar plate manufacturing process, include the following steps:
Step 1: matrix resin being quantitatively pre-mixed with auxiliary agent and then is mixed with conductive agent, is kneaded, is obtained by being sufficiently mixed
To bipolar plates base-material, stored into freezer；
Step 2: using metal die, throw after cavity surface nitrogen-hardening or chromium plating to mirror surface, and to mold heating and temperature control exists
150 DEG C, the cavity surface temperature difference is no more than 5 DEG C；
Step 3: accurate weighing bipolar plates base-material is evenly distributed in mold by dispersing jig, and compression molding system is intermediate
Body；
Step 4: after demoulding, intermediate merging two layers of surface being thrown in flat metal plate, and sizing cooling obtains conductive plastics
Bipolar plates.
Described matrix resin is epoxy vinyl ester resin, and the auxiliary agent is curing agent, and the conductive agent is conductive black
And electrically conductive graphite.It is described to be heated to be heat-conducting oil heating.Die shear side thickness control is in 0.03mm.
Embodiment two:
Present embodiment discloses a kind of conductive plastic bi-polar plate manufacturing process, include the following steps:
Step 1: matrix resin being quantitatively pre-mixed with auxiliary agent and then is mixed with conductive agent, is kneaded, is obtained by being sufficiently mixed
To bipolar plates base-material, stored into freezer；
Step 2: using metal die, throw after cavity surface nitrogen-hardening or chromium plating to mirror surface, and to mold heating and temperature control exists
160 DEG C, the cavity surface temperature difference is no more than 5 DEG C；
Step 3: accurate weighing bipolar plates base-material is evenly distributed in mold by dispersing jig, and compression molding system is intermediate
Body；
Step 4: after demoulding, intermediate merging two layers of surface being thrown in flat metal plate, and sizing cooling obtains conductive plastics
Bipolar plates.
Described matrix resin is epoxy vinyl ester resin, and the auxiliary agent is release agent, and the conductive agent is carbon nanotube.
It is described to be heated to be electrical bar heating.Die shear side thickness control is in 0.02mm.
Embodiment three:
Present embodiment discloses a kind of conductive plastic bi-polar plate manufacturing process, include the following steps:
Step 1: matrix resin being quantitatively pre-mixed with auxiliary agent and then is mixed with conductive agent, is kneaded, is obtained by being sufficiently mixed
To bipolar plates base-material, stored into freezer；
Step 2: using metal die, throw after cavity surface nitrogen-hardening or chromium plating to mirror surface, and to mold heating and temperature control exists
170 DEG C, the cavity surface temperature difference is no more than 5 DEG C；
Step 3: accurate weighing bipolar plates base-material is evenly distributed in mold by dispersing jig, and compression molding system is intermediate
Body；
Step 4: after demoulding, intermediate merging two layers of surface being thrown in flat metal plate, and sizing cooling obtains conductive plastics
Bipolar plates.
Described matrix resin is epoxy vinyl ester resin, and the auxiliary agent is processing aid, and the conductive agent is graphene
And carbon fiber.It is described to be heated to be heat-conducting oil heating.Die shear side thickness control is in 0.01mm.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of conductive plastic bi-polar plate manufacturing process, which comprises the steps of:
Step 1: matrix resin being quantitatively pre-mixed with auxiliary agent and then is mixed with conductive agent, is kneaded, is obtained by being sufficiently mixed
To bipolar plates base-material, stored into freezer；
Step 2: using metal die, throw after cavity surface nitrogen-hardening or chromium plating to mirror surface, and to mold heating and temperature control exists
150-170℃；
Step 3: accurate weighing bipolar plates base-material is evenly distributed in mold by dispersing jig, and compression molding system is intermediate
Body；
Step 4: after demoulding, intermediate merging two layers of surface being thrown in flat metal plate, and sizing cooling obtains conductive plastics
Bipolar plates.
2. conductive plastic bi-polar plate manufacturing process according to claim 1, which is characterized in that described matrix resin is epoxy
Vinyl ester resin.
3. conductive plastic bi-polar plate manufacturing process according to claim 1, which is characterized in that the auxiliary agent be curing agent or
One or more of release agent or processing aid.
4. conductive plastic bi-polar plate manufacturing process according to claim 1, which is characterized in that the conductive agent is conductive charcoal
Black or electrically conductive graphite or carbon nanotube or one or more of graphene or carbon fiber.
5. conductive plastic bi-polar plate manufacturing process according to claim 1, which is characterized in that the conduction oil that is heated to be adds
Heat or electrical bar heating.
6. conductive plastic bi-polar plate manufacturing process according to claim 1, which is characterized in that die shear side thickness
Control is within 0.03mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811040914.5A CN109119641A (en) | 2018-09-07 | 2018-09-07 | A kind of conductive plastic bi-polar plate manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811040914.5A CN109119641A (en) | 2018-09-07 | 2018-09-07 | A kind of conductive plastic bi-polar plate manufacturing process |
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| Publication Number | Publication Date |
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| CN109119641A true CN109119641A (en) | 2019-01-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282349A (en) * | 1997-10-14 | 2001-01-31 | 赛特技术有限公司 | Conductive thermoset molding composition and method for producing same |
| CN1765603A (en) * | 2005-11-11 | 2006-05-03 | 浙江大学 | Preparation method of polymer resin composite bipolar plate for proton exchange membrane fuel cell |
| CN102237532A (en) * | 2010-04-27 | 2011-11-09 | 苏州氢洁电源科技有限公司 | Manufacturing method for once compression-molding carbon plate with flow field |
| CN103500841A (en) * | 2013-10-18 | 2014-01-08 | 中国科学院宁波材料技术与工程研究所 | Composite bipolar plate of flow battery and method for manufacturing composite bipolar plate |
| CN105633419A (en) * | 2016-03-11 | 2016-06-01 | 常州博能新能源有限公司 | Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor |
-
2018
- 2018-09-07 CN CN201811040914.5A patent/CN109119641A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282349A (en) * | 1997-10-14 | 2001-01-31 | 赛特技术有限公司 | Conductive thermoset molding composition and method for producing same |
| CN1765603A (en) * | 2005-11-11 | 2006-05-03 | 浙江大学 | Preparation method of polymer resin composite bipolar plate for proton exchange membrane fuel cell |
| CN102237532A (en) * | 2010-04-27 | 2011-11-09 | 苏州氢洁电源科技有限公司 | Manufacturing method for once compression-molding carbon plate with flow field |
| CN103500841A (en) * | 2013-10-18 | 2014-01-08 | 中国科学院宁波材料技术与工程研究所 | Composite bipolar plate of flow battery and method for manufacturing composite bipolar plate |
| CN105633419A (en) * | 2016-03-11 | 2016-06-01 | 常州博能新能源有限公司 | Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor |
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