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Post-processing method for 3D-printed pem fuel cell stack intake manifold

A technology of fuel cell stacks and proton exchange membranes, applied in 3D object support structures, household components, additive manufacturing, etc., can solve the problems that the intake manifold does not maintain pressure, cannot achieve the efficiency of the intake manifold, etc., and achieve mechanical Good strength, stable and reliable density, and high bonding strength

Inactive Publication Date: 2017-05-31
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, SLS technology can be used to 3D print the intake manifold, but since the SLS process is completed without external driving force, there will be more or less a certain number of pores in the polymer SLS formed parts. The 3D printed intake manifold will not maintain pressure, that is, in the case of ventilation (0.5MP), the gas will seep directly from the surface of the part, and the effect of the intake manifold cannot be achieved

Method used

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  • Post-processing method for 3D-printed pem fuel cell stack intake manifold

Examples

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Effect test

Embodiment 1

[0033] This embodiment provides a post-processing method for 3D printing a proton exchange membrane fuel cell stack intake manifold, including the following steps:

[0034] 1) Weigh the 3D printed intake manifold prototype 1 which weighs 5073g;

[0035] 2) Weigh 2000g of bisphenol A diglycidyl ether, 400g of epoxy resin AB glue and 200g of propylene oxide butyl ether;

[0036] 3) First mix the epoxy resin and the epoxy resin diluent uniformly, and then add the epoxy resin curing agent to the mixture of the epoxy resin and the epoxy resin diluent and mix uniformly , Get permeate;

[0037] 4) First, soak the entire intake manifold prototype 1 in water until its surface and interior are completely wetted, and then apply the permeate liquid to the intake manifold prototype 1 by means of surface penetration. On the surface of the intake manifold until the permeate is observed on the inner wall of the intake manifold prototype 1;

[0038] 5) Wipe off the excess penetrant on the surface of t...

Embodiment 2

[0042] This embodiment provides a post-processing method for 3D printing a proton exchange membrane fuel cell stack intake manifold, including the following steps:

[0043] 1) Weigh the 3D printed intake manifold prototype 2 which weighs 5047g;

[0044] 2) Weigh 2000g of bisphenol A diglycidyl ether, 600g of epoxy resin AB glue and 400g of propylene oxide butyl ether;

[0045] 3) First mix the epoxy resin and the epoxy resin diluent uniformly, and then add the epoxy resin curing agent to the mixture of the epoxy resin and the epoxy resin diluent and mix uniformly , Get permeate;

[0046] 4) Firstly, soak the whole intake manifold prototype 2 in water until its surface and interior are completely wetted, and then apply the penetrant liquid to the intake manifold prototype 2 by means of surface penetration. , Until the permeate is observed on the inner wall of the prototype intake manifold 2;

[0047] 5) Wipe off the excess penetrating liquid on the surface of the intake manifold protot...

Embodiment 3

[0051] This embodiment provides a post-processing method for 3D printing a proton exchange membrane fuel cell stack intake manifold, including the following steps:

[0052] 1) Weigh the 3D printed intake manifold prototype 3, which weighs 5056g;

[0053] 2) Weigh 2500g of bisphenol A diglycidyl ether, 500g of epoxy resin AB glue and 250g of propylene oxide butyl ether;

[0054] 3) First mix the epoxy resin and the epoxy resin diluent uniformly, and then add the epoxy resin curing agent to the mixture of the epoxy resin and the epoxy resin diluent and mix uniformly , Get permeate;

[0055] 4) First immerse the intake manifold prototype 3 in water until its surface and interior are completely wetted, and then apply the penetrant liquid to the intake manifold prototype 3 by means of surface penetration. , Until the permeate is observed on the inner wall of the intake manifold prototype 3;

[0056] 5) Wipe off the excess penetrant on the surface of the intake manifold prototype 3 with a p...

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Abstract

The invention discloses a post-processing method for a 3D-printed pem fuel cell stack intake manifold. The post-processing method comprises the steps of weighing weight of a 3D-printed intake manifold prototype model; weighing epoxy resin, epoxy resin diluent and epoxy resin curing agent according to the weight of the intake manifold prototype model; fully mixing the epoxy resin with the epoxy resin diluent, adding the epoxy resin curing agent into mixture of the epoxy resin and the epoxy resin diluent and fully mixing to obtain penetrating fluid; coating the surface of the intake manifold prototype model with the penetrating fluid in a surface permeation mode until the penetrating fluid completely penetrates the intake manifold prototype model; wiping off residual penetrating fluid on the surface of the intake manifold prototype model and curing for 5 to 7 hours in normal temperature; curing the intake manifold prototype model which has been cured in the normal temperature for 5 to 7 hours in temperature of 20 to 40 DEG C, warming to 40 to 70 DEG C and curing for 2 to 4 hours; polishing surface. The post-processing method is suitable for aftertreatment of the 3D-printed intake manifold prototype part.

Description

Technical field [0001] The present invention relates to the field of 3D printing of intake manifolds, in particular to a post-processing method for 3D printing of the intake manifold of a proton exchange membrane fuel cell stack. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) stack intake manifold (maniford) is a kind of intake and water pipeline connecting the hydrogen storage tank, cooling water tank and air compressor to before the metal bipolar plate. Its function is to distribute compressed air and compressed hydrogen to the entrance of the metal bipolar plate to make it react and deliver coolant to reduce the heat generated by the stack, so that the stack can be stabilized at a certain operating temperature. [0003] At present, the main advantages of plastic intake manifolds are lower cost and lighter weight. In addition, since polyamide (PA) has lower thermal conductivity than aluminum, the temperature of the incoming air is lower. Not only can t...

Claims

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Application Information

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IPC IPC(8): B29C71/00B29C64/379B33Y30/00B29L31/34
CPCB29C71/0009B29L2031/3468B33Y30/00
Inventor 潘牧杨程
Owner WUHAN UNIV OF TECH
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