A kind of low-temperature molding resin carbon plate and preparation method thereof

A technology of resin carbon and low temperature, which is applied in the field of low temperature forming resin carbon plate and its preparation, can solve the problems of complicated process and high cost, and achieve the effects of high conductivity, adjustable mechanical strength and good air tightness

Active Publication Date: 2017-01-25
深圳市远宏新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some other composite electrodes are based on metal plates, and the anti-corrosion layer is added on the metal plates. The manufacturing process is more complicated and the cost is higher.

Method used

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  • A kind of low-temperature molding resin carbon plate and preparation method thereof
  • A kind of low-temperature molding resin carbon plate and preparation method thereof
  • A kind of low-temperature molding resin carbon plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Application of fuel cell graphite bipolar plate

[0020] By weight percentage, 30% novolac epoxy resin, 15% alkyd resin, 5% resin hardener, 35% graphite powder (particle size 0.05mm), 5% carbon powder (particle size <0.001mm)+ 5% zinc hydroxide + 5% aluminum oxide were mixed evenly, and poured into a mold after standing for 30 minutes at a temperature of 250°C and a pressure of 20MPa. After 30 minutes, the mold was opened, taken out and left to cool.

[0021] Table 1 Simultaneous Conductivity Test

[0022]

[0023] It can be obtained from Table 1:

[0024] 1. In terms of mechanical strength, there is no significant difference between the carbon plate in Example 1 and the commercially available Japanese high-pressure graphite plate;

[0025] 2. Stress value <1% (maximum deformation before reaching plate bending);

[0026] 3. In this embodiment, the Young's modulus of the carbon plate is higher than that of the graphite plate, and the larger the value, the smalle...

Embodiment 2

[0032] Example 2: Application of carbon plate for high conductivity electrode of lithium polymer battery

[0033] Percentage by weight, 20% novolak epoxy resin, 15% polyester resin, 40% graphite powder (0.05mm particle size), 5% titanium oxide (0.003mm particle size), 5% zinc oxide, 5% Mix the nano-silver wire and 10% alumina powder evenly, pour it into the mold after standing for 30 minutes, the temperature is 250°C, the pressure is 20MPa, the time is 30 minutes→open the mold, take it out, let it stand and cool, and then bake at 900°C for 1 hour.

[0034] Table 2

[0035]

Embodiment 3

[0037] Step A: mix 5% carbon powder and 20% carbon nanotubes uniformly by weight percentage, then add 10% zinc hydroxide and 20% titanium oxide, and mix uniformly with a dry powder homogenizer;

[0038] Step B: uniformly mix the uniformly mixed material obtained in step A with 45% polyester resin, and let it stand for 1 hour to make the mixing balanced;

[0039] Step C: Take the complete material and pour it into the mold with the designed gas flow channel to release the film. After the film is removed, the required resin carbon plate can be obtained. The conditions are: set the temperature at 100°C, set the pressure at 100MPa, and set the time for 3 minutes;

[0040] Step D: Put the obtained resin carbon plate in an oven at 500°C and bake for 30 minutes.

[0041] table 3

[0042]

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Abstract

The invention provides a low-temperature molding resin carbon plate and a preparation method thereof. The low-temperature molding resin carbon plate comprises the following components in weight percentage: 5%-85% of thermosetting resin, 5%-85% of conductive material and 5%-85% of thermal-reactive filling material. The preparation method comprises the following steps: step A, uniformly mixing the conductive material, adding the thermal-reactive filling material and uniformly mixing by a dry powder homogenizer; step B, uniformly mixing the uniformly mixed material obtained from step A and the thermosetting resin in proportion and standing so that the conductive material is mixed with the resin; and step C, pouring the material obtained from step B into a die to demould to obtain the resin carbon plate after demoulding. The resin carbon plate is high in conductivity, adaptable in mechanical strength, strong in machinability and durability, good in air impermeability, good in corrosion resistance, direct in low-temperature molding, saved in processing and cost and wide in application expandability. The formula of the resin is matched with the thermal-reactive filling material to form good continuous interfaces.

Description

technical field [0001] The invention belongs to the field of fuel cells, and relates to an electrode bipolar plate in a fuel cell structure, in particular to a low-temperature molded resin carbon plate and a preparation method thereof. Background technique [0002] Fuel cell is a green energy that has been widely used in recent years. Its production and power generation mechanism have changed the form of traditional liquid batteries, using high-efficiency solid-state proton exchange membranes to use gas as the energy source for power generation. It can be used in second power stations and mobile power supplies. increasing day by day. In the fuel cell structure, metal and graphite composite bipolar plates are often used. Among them, the graphite plate is made into a graphite column by high temperature and high pressure, and then sliced ​​and ground into a graphite sheet. It is used in a fuel cell and needs to be processed by CNC to carve out the gas flow channel. The cost o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/66H01M8/0226H01M8/0258H01M4/86
CPCH01B1/24H01M8/0226Y02E60/50
Inventor 宋福唐洪铭杰
Owner 深圳市远宏新能源有限公司
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