CN106739025B - The post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold - Google Patents
The post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold Download PDFInfo
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- CN106739025B CN106739025B CN201611034890.3A CN201611034890A CN106739025B CN 106739025 B CN106739025 B CN 106739025B CN 201611034890 A CN201611034890 A CN 201611034890A CN 106739025 B CN106739025 B CN 106739025B
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- inlet manifold
- epoxy resin
- prototype
- penetrating fluid
- printing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
Abstract
The invention discloses a kind of post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold, including the weight for the inlet manifold prototype for claiming 3D printing to go out；Epoxy resin, epoxy resin diluent and epoxy curing agent are weighed respectively according to the weight of inlet manifold prototype；Epoxy resin is uniformly mixed with epoxy resin diluent, by epoxy curing agent be added to epoxy resin in the mixture of epoxy resin diluent and be uniformly mixed, obtain penetrating fluid；Penetrating fluid is coated on inlet manifold prototype surface using surface penetration mode, until penetrating fluid permeates inlet manifold prototype completely；The penetrating fluid for wiping inlet manifold prototype excess surface, in ambient temperature curing 5~7 hours；Inlet manifold prototype after normal temperature cure is solidified 5~7 hours at 20~40 DEG C, 40~70 DEG C is warming up to and solidifies 2~4 hours；Polishing, polished surface.Post-processing suitable for the inlet manifold prototype that 3D printing goes out.
Description
Technical field
The present invention relates to inlet manifold 3D printing fields, more particularly to a kind of 3D printing Proton Exchange Membrane Fuel Cells electricity
The post-processing approach of heap inlet manifold.
Background technique
Proton Exchange Membrane Fuel Cells (PEMFC) pile inlet manifold (maniford) is a kind of connection hydrogen container and cooling
Air inlet before metal double polar plates, inlet pipeline are arrived after water tank and air compressor machine.Its function is by compressed air and compressed hydrogen
The entrance that gas is assigned to metal double polar plates, which brings it about reaction and conveys coolant liquid, reduces heat caused by pile, keeps pile steady
It is scheduled under certain operating temperature.
Currently, the most important advantage of plastic air intake manifold is that cost is relatively low, lighter weight.Further, since polyamide (PA)
Thermal conductivity it is lower than aluminium, the air themperature of entrance is lower.Thermal starting performance can not only be improved, improve the power of pile, simultaneously
Heat loss in pipe can be avoided when cold start-up to a certain degree, accelerates to improve gas temperature, and plastic air intake manifold inner wall light
It is sliding, air flow resistance can be reduced.Thus we select the material of PA66 (nylon) plus mine fibre manufacture pile inlet manifold.
And selective laser sintering (selective laser sintering, SLS) is that a kind of 3D printing (also referred to as increases
Material manufacture, Quick-forming) technology, SLS technology is based on discrete dynamics models manufacturing theory, by part three-dimensional entity model file along Z-direction
Hierarchy slicing, and stl file is generated, the cross section information of in store material object parts in file.Then the heat effect of laser, root are utilized
According to the slice information of part, solid powder material is bonded to accumulation layer by layer, finally shapes part prototype or function part.
Therefore, SLS technology 3D printing can be selected to produce inlet manifold, but since SLS process is in no external driving force
Under conditions of complete, so can more or less have a certain number of holes in macromolecule SLS drip molding, these holes can make
There is the case where not pressure maintaining in the inlet manifold that 3D printing goes out, i.e., in the case where ventilation (0.5MP), gas is directly from piece surface
The effect of oozing out, inlet manifold cannot be reached.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, a kind of 3D printing pem fuel is provided
The post-processing approach of battery stack inlet manifold.
In order to achieve the goal above, a kind of 3D printing proton exchange film fuel cell electric piling inlet manifold provided by the invention
Post-processing approach, comprising the following steps:
1) weight for the inlet manifold prototype that 3D printing goes out is weighed；
2) epoxy resin, epoxy resin diluent and asphalt mixtures modified by epoxy resin are weighed according to the weight of the inlet manifold prototype respectively
The weight ratio of rouge curing agent, the inlet manifold prototype and the epoxy resin is (2~2.5): 1, the epoxy resin is solid
Agent and the weight ratio of the epoxy resin are (0.2~0.3): 1, the weight of the epoxy resin diluent and the epoxy resin
Amount is than being (0.1~0.2): 1；
3) first the epoxy resin is uniformly mixed with the epoxy resin diluent, then by the epoxy curing agent
Be added to the epoxy resin in the mixture of the epoxy resin diluent and be uniformly mixed, obtain penetrating fluid；
4) by the penetrating fluid, brushing waits until on the surface of the inlet manifold prototype by the way of surface penetration
Until the penetrating fluid permeates the inlet manifold prototype completely；
5) penetrating fluid of the inlet manifold prototype excess surface is wiped, and in ambient temperature curing 5~7 hours；
6) solidify 5~7 hours at by the inlet manifold prototype after normal temperature cure prior to 20~40 DEG C, then be warming up to
40~70 DEG C solidify 2~4 hours；
7) polishing, polished surface.
By the brushwork epoxy resin penetrating fluid on the inlet manifold prototype surface that 3D printing goes out, and seep epoxy resin
Transparent liquid permeates inlet manifold prototype completely, fill the solidification of epoxy infiltration liquid can in inlet manifold prototype
Hole increases the consistency of inlet manifold prototype, thus the effect of reaching inlet manifold；Simultaneously as epoxy resin has
Adhesion strength is high, the advantage wide, shrinking percentage is low and stability is good is bonded, so after by epoxy infiltration liquid infiltration solidification
The consistency of inlet manifold prototype is high and reliable and stable；Moreover, because epoxy resin also have excellent electrical insulation capability and
High mechanical strength, so the electrical insulation capability and machinery by the inlet manifold prototype after epoxy infiltration liquid infiltration solidification are strong
It spends all more preferable；Finally, due to there is no lower-molecular substance releasing in epoxy infiltration liquid solidification process, it is possible at normal temperature
Molding does not require deflation or variable pressure, therefore easy to operate, does not need very high technology and equipment, at low cost.
In the above scheme, the epoxy resin is bisphenol A diglycidyl ether.
In the above scheme, the epoxy curing agent is epoxy resin AB glue.
In the above scheme, the epoxy resin diluent is epoxy propane butyl ether.
It is in the above scheme, described until the penetrating fluid permeates the inlet manifold prototype completely specifically:
Until observing the penetrating fluid on the inner wall from the inlet manifold prototype.
In the above scheme, before the step 4 further include: the inlet manifold prototype is made to keep wetting state.This
Sample, during infiltration, the water in structure can play the role of guidance and reducing friction resistance, so that penetrating fluid be made more to hold
Easily infiltration.
In the above scheme, described that the inlet manifold prototype is made to keep wetting state specifically: by the air inlet discrimination
Pipe prototype is integrally impregnated in water, until its surface and inside are soaked completely.
In the above scheme, the step 5 specifically: the institute of the inlet manifold prototype excess surface is wiped with paper handkerchief
Penetrating fluid is stated, and in ambient temperature curing 6 hours.
In the above scheme, the step 6 specifically: by the inlet manifold prototype after normal temperature cure prior to 20~
Solidify 6 hours at 40 DEG C, then is warming up to 40~70 DEG C and solidifies 3 hours.
Technical solution of the present invention has the benefit that
1, by the brushwork epoxy resin penetrating fluid on the inlet manifold prototype surface that 3D printing goes out, and make epoxy resin
Penetrating fluid permeates inlet manifold prototype completely, fill the solidification of epoxy infiltration liquid can in inlet manifold prototype
Hole, increase inlet manifold prototype consistency, thus the effect of reaching inlet manifold；
2, since epoxy resin has adhesion strength high, the advantage wide, shrinking percentage is low and stability is good is bonded, so by
The consistency of inlet manifold prototype after epoxy infiltration liquid infiltration solidification is high and reliable and stable；
3, since epoxy resin also has excellent electrical insulation capability and high mechanical strength, so by epoxy infiltration liquid
The electrical insulation capability and mechanical strength of inlet manifold prototype after infiltration solidification are all more preferable；
4, due to there is no lower-molecular substance releasing in epoxy infiltration liquid solidification process, it is possible at normal temperature at
Type does not require deflation or variable pressure, therefore easy to operate, does not need very high technology and equipment, at low cost；
5, by making inlet manifold prototype keep wetting state, in this way, during infiltration, water in structure can be with
Play the role of guidance and reducing friction resistance, so that penetrating fluid be made to be easier to permeate.
The present invention is compared with the prior art, and sufficiently shows that it is advantageous in that: consistency is high, reliable and stable, electrical insulating property
Can, mechanical strength it is good and simple to operate, at low cost etc..
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, but the embodiment should not be construed as to the present invention
Limitation.
Embodiment 1:
A kind of post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold is present embodiments provided, is wrapped
Include following steps:
1) weight for the inlet manifold prototype 1 that 3D printing goes out is weighed, the weight of the inlet manifold prototype 1 is
5073g；
2) bisphenol A diglycidyl ether, the epoxy resin AB glue of 400g and the propylene oxide of 200g of 2000g are weighed respectively
Butyl ether；
3) first the epoxy resin is uniformly mixed with the epoxy resin diluent, then by the epoxy curing agent
Be added to the epoxy resin in the mixture of the epoxy resin diluent and be uniformly mixed, obtain penetrating fluid；
4) first 1 entirety of inlet manifold prototype is impregnated in water, until its surface and inside are soaked completely, then
By the penetrating fluid by the way of surface penetration brushing on the surface of the inlet manifold prototype 1, until from it is described into
Until observing the penetrating fluid on the inner wall of gas manifold prototype 1；
5) penetrating fluid of 1 excess surface of inlet manifold prototype is wiped with paper handkerchief, and small in ambient temperature curing 5
When；
6) solidify 5 hours at by the inlet manifold prototype 1 after normal temperature cure prior to 20 DEG C, then be warming up to 40 DEG C admittedly
Change 2 hours；
7) polishing, polished surface up to the proton exchange film fuel cell electric piling inlet manifold of 3D printing post-processing finished product
1。
Embodiment 2:
A kind of post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold is present embodiments provided, is wrapped
Include following steps:
1) weight for the inlet manifold prototype 2 that 3D printing goes out is weighed, the weight of the inlet manifold prototype 2 is
5047g；
2) bisphenol A diglycidyl ether, the epoxy resin AB glue of 600g and the propylene oxide of 400g of 2000g are weighed respectively
Butyl ether；
3) first the epoxy resin is uniformly mixed with the epoxy resin diluent, then by the epoxy curing agent
Be added to the epoxy resin in the mixture of the epoxy resin diluent and be uniformly mixed, obtain penetrating fluid；
4) first 2 entirety of inlet manifold prototype is impregnated in water, until its surface and inside are soaked completely, then
By the penetrating fluid by the way of surface penetration brushing on the surface of the inlet manifold prototype 2, until from it is described into
Until observing the penetrating fluid on the inner wall of gas manifold prototype 2；
5) penetrating fluid of 2 excess surface of inlet manifold prototype is wiped with paper handkerchief, and small in ambient temperature curing 6
When；
6) solidify 6 hours at by the inlet manifold prototype 2 after normal temperature cure prior to 30 DEG C, then be warming up to 50 DEG C admittedly
Change 3 hours；
7) polishing, polished surface up to the proton exchange film fuel cell electric piling inlet manifold of 3D printing post-processing finished product
2。
Embodiment 3:
A kind of post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold is present embodiments provided, is wrapped
Include following steps:
1) weight for the inlet manifold prototype 3 that 3D printing goes out is weighed, the weight of the inlet manifold prototype 3 is
5056g；
2) bisphenol A diglycidyl ether, the epoxy resin AB glue of 500g and the propylene oxide of 250g of 2500g are weighed respectively
Butyl ether；
3) first the epoxy resin is uniformly mixed with the epoxy resin diluent, then by the epoxy curing agent
Be added to the epoxy resin in the mixture of the epoxy resin diluent and be uniformly mixed, obtain penetrating fluid；
4) first 3 entirety of inlet manifold prototype is impregnated in water, until its surface and inside are soaked completely, then
By the penetrating fluid by the way of surface penetration brushing on the surface of the inlet manifold prototype 3, until from it is described into
Until observing the penetrating fluid on the inner wall of gas manifold prototype 3；
5) penetrating fluid of 3 excess surface of inlet manifold prototype is wiped with paper handkerchief, and small in ambient temperature curing 7
When；
6) solidify 7 hours at by the inlet manifold prototype 3 after normal temperature cure prior to 40 DEG C, then be warming up to 60 DEG C admittedly
Change 4 hours；
7) polishing, polished surface up to the proton exchange film fuel cell electric piling inlet manifold of 3D printing post-processing finished product
3。
Embodiment 4:
A kind of post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold is present embodiments provided, is wrapped
Include following steps:
1) weight for the inlet manifold prototype 4 that 3D printing goes out is weighed, the weight of the inlet manifold prototype 4 is
5068g；
2) bisphenol A diglycidyl ether, the epoxy resin AB glue of 750g and the propylene oxide of 500g of 2500g are weighed respectively
Butyl ether；
3) first the epoxy resin is uniformly mixed with the epoxy resin diluent, then by the epoxy curing agent
Be added to the epoxy resin in the mixture of the epoxy resin diluent and be uniformly mixed, obtain penetrating fluid；
4) first 4 entirety of inlet manifold prototype is impregnated in water, until its surface and inside are soaked completely, then
By the penetrating fluid by the way of surface penetration brushing on the surface of the inlet manifold prototype 4, until from it is described into
Until observing the penetrating fluid on the inner wall of gas manifold prototype 4；
5) penetrating fluid of 4 excess surface of inlet manifold prototype is wiped with paper handkerchief, and small in ambient temperature curing 7
When；
6) solidify 7 hours at by the inlet manifold prototype 4 after normal temperature cure prior to 40 DEG C, then be warming up to 70 DEG C admittedly
Change 4 hours；
7) polishing, polished surface up to the proton exchange film fuel cell electric piling inlet manifold of 3D printing post-processing finished product
4。
Hermeticity experiment is carried out to aforementioned four inlet manifold prototype respectively, individual pipeline is tested, specifically
Ground adds air intake valve and inlet pressure gauge in the air inlet of inlet manifold prototype respectively, in going out for inlet manifold prototype
Port adds outlet valve and delivery gauge respectively, is passed through nitrogen into inlet manifold prototype, to inlet pressure gauge and goes out
After mouth pressure gauge numerical stability, first air intake valve and outlet valve are closed, then read inlet pressure gauge and delivery gauge
Numerical value and be averaged to obtain pressure value 1, the numerical value of inlet pressure gauge and delivery gauge is read again after about 2-3 hours
And it is averaged to obtain pressure value 2, if the difference between pressure value 1 and pressure value 2 is no more than 10%, represents pressure maintaining performance and reach
The effect of inlet manifold.
By testing to obtain following table to the forward and backward air tightness test that carries out respectively of aforementioned four inlet manifold prototype processing:
From upper table interpretation of result: passing through the brushwork epoxy resin infiltration on the inlet manifold prototype surface that 3D printing goes out
Transparent liquid, and epoxy infiltration liquid is made to permeate inlet manifold prototype completely, fill out the solidification of epoxy infiltration liquid can
The hole in inlet manifold prototype is filled, increases the consistency of inlet manifold prototype, thus the effect of reaching inlet manifold；Together
When, since epoxy resin has adhesion strength high, the advantage wide, shrinking percentage is low and stability is good is bonded, so by asphalt mixtures modified by epoxy resin
The consistency of inlet manifold prototype after rouge penetrating fluid infiltration solidification is high and reliable and stable；Moreover, because epoxy resin also has
There are excellent electrical insulation capability and high mechanical strength, so by the inlet manifold prototype after epoxy infiltration liquid infiltration solidification
Electrical insulation capability and mechanical strength it is all more preferable；Finally, due to there is no lower-molecular substance in epoxy infiltration liquid solidification process
It releases, it is possible to form at normal temperature, not require deflation or variable pressure, therefore easy to operate, do not need very high
Technology and equipment, it is at low cost.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold, comprising the following steps:
1) weight for the inlet manifold prototype that 3D printing goes out is weighed；
2) epoxy resin, epoxy resin diluent and epoxy resin is weighed respectively according to the weight of the inlet manifold prototype to consolidate
The weight ratio of agent, the inlet manifold prototype and the epoxy resin is (2~2.5): 1, the epoxy curing agent
Weight ratio with the epoxy resin is (0.2~0.3): 1, the weight ratio of the epoxy resin diluent and the epoxy resin
For (0.1~0.2): 1；The epoxy resin is bisphenol A diglycidyl ether；The epoxy curing agent is epoxide resin AB
Glue；The epoxy resin diluent is epoxy propane butyl ether；
3) first the epoxy resin is uniformly mixed with the epoxy resin diluent, then the epoxy curing agent is added
To the epoxy resin in the mixture of the epoxy resin diluent and be uniformly mixed, obtain penetrating fluid；Make the air inlet
Manifold prototype keeps wetting state, described that the inlet manifold prototype is made to keep wetting state specifically: by the air inlet
Manifold prototype is integrally impregnated in water, until its surface and inside are soaked completely；
4) by the penetrating fluid, brushing is on the surface of the inlet manifold prototype by the way of surface penetration, until described
Until penetrating fluid permeates the inlet manifold prototype completely；
5) penetrating fluid of the inlet manifold prototype excess surface is wiped, and in ambient temperature curing 5~7 hours；
6) solidify 5~7 hours at by the inlet manifold prototype after normal temperature cure prior to 20~40 DEG C, then it is warming up to 40~
70 DEG C solidify 2~4 hours；
7) polishing, polished surface.
2. the post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold as described in claim 1, special
Sign is, described until the penetrating fluid permeates the inlet manifold prototype completely specifically: until from the air inlet
Until observing the penetrating fluid on the inner wall of manifold prototype.
3. the post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold as described in claim 1, special
Sign is, the step 5 specifically: wipe the penetrating fluid of the inlet manifold prototype excess surface with paper handkerchief, and in
Ambient temperature curing 6 hours.
4. the post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold as described in claim 1, special
Sign is, the step 6 specifically: by the inlet manifold prototype after normal temperature cure prior to 20~40 DEG C at solidification 6 it is small
When, then be warming up to 40~70 DEG C and solidify 3 hours.
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| CN201611034890.3A CN106739025B (en) | 2016-11-23 | 2016-11-23 | The post-processing approach of 3D printing proton exchange film fuel cell electric piling inlet manifold |
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| CN113211794A (en) * | 2021-04-06 | 2021-08-06 | 中国第一汽车股份有限公司 | Post-treatment method for plastic pipe fitting of cooling system based on SLS printing process |
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| CN1752238A (en) * | 2005-09-27 | 2006-03-29 | 华中科技大学 | Method for fast mfg. metal/high-molecular composite material parts |
| CN1850493A (en) * | 2006-04-28 | 2006-10-25 | 华中科技大学 | Method for rapid manufacturing plastic functional piece |
| CN104010796A (en) * | 2012-01-05 | 2014-08-27 | 索尼公司 | Method of manufacturing structural object and structural object |
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