Preparation method of flexible porous carbon fiber
A technology of porous carbon fiber and carbon fiber, which is applied to the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of high cost, low specific surface area, and low output, and achieve the effect of good flexibility, high specific surface area, and high degree of graphitization
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[0040] Example 1:
[0041] A method for preparing flexible porous carbon fiber includes the following steps:
[0042] 1) Wash and dry the cotton thread with a diameter of 20 microns;
[0043] 2) The cotton thread treated in step 1) is heat-treated at 1000 degrees Celsius for 20 minutes in a hydrogen atmosphere with a flow rate of 50 milliliters per minute to obtain flexible porous carbon fibers.
[0044] figure 1 It is a digital photo of the flexible porous carbon fiber prepared in this example. by figure 1 It can be seen that porous carbon fiber is very flexible and can be bent and woven into various shapes at will.
[0045] figure 2 It is a transmission electron microscope (TEM) photograph of the flexible porous carbon fiber prepared in this example. by figure 2 a It can be seen that carbon fiber is a loose structure, which is formed by a large number of layered structures. in figure 2 In the high-resolution electron micrograph of b, many mesoporous hollow structures caused by c...
Example Embodiment
[0047] Example 2:
[0048] A method for preparing flexible porous carbon fiber includes the following steps:
[0049] 1) Wash and dry the twine with a diameter of 500 microns;
[0050] 2) Heat treatment of the twine treated in step 1) in an ammonia atmosphere with a flow rate of 20 milliliters per minute at 1000 degrees Celsius for 60 minutes to obtain flexible porous carbon fibers.
Example Embodiment
[0051] Example 3:
[0052] A method for preparing flexible porous carbon fiber includes the following steps:
[0053] 1) Wash and dry the paper thread with a diameter of 1000 microns;
[0054] 2) The paper thread treated in step 1) is heat-treated at 1000 degrees Celsius for 20 minutes in a steam atmosphere with a flow rate of 30 milliliters per minute to obtain flexible porous carbon fibers.
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