Preparation method of conductive carbon membrane
A conductive carbon and carbonization technology, applied in the field of membrane separation, can solve problems such as weak conductivity, and achieve the effects of low price, wide application prospect and simple process
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Embodiment 1
[0030] Weigh 100g of anthracite coal powder with a particle size of 200 μm, 10g of carboxymethyl cellulose, 12g of polyvinyl alcohol and 5g of Cu powder into a ball mill for pulverization and mixing for 20 hours, then add 60g of an additive aqueous solution (Tween -80: sodium polyphosphate: dibutyl phthalate mass ratio is 1: 3: 6) pre-mixed in the mixer for 3 hours, after standing for 10 hours, it was made into bar stock through vacuum mud refining machine; After 24 hours, put it into a molding machine, and extrude a tubular original film under a pressure of 2MPa. After drying with hot air for 10 hours, put it into a carbonization furnace. Under the protection of argon, raise the temperature to 900°C at a rate of 3°C / min and keep the temperature constant for 60 minutes. It can be taken out after cooling down to below 100°C. The performance of the obtained conductive carbon film is shown in Table 1.
Embodiment 2～9
[0032] According to the steps of Example 1, but the conductive agent is prepared according to the parameters in Table 1, the properties of the obtained conductive carbon film are shown in Table 1.
[0033] Table 1
[0034]
Embodiment 10
[0036] Take by weighing 100g particle size and be 500 μ m bituminous coal powder, 15g carboxymethyl cellulose, 7g polyurethane and 7g conductive graphite powder are put into ball mill and carry out pulverization and mixing 24h; Add 65g mass percent concentration and be 15% additive aqueous solution (ethylene glycol : sodium hexametaphosphate: oleic acid mass ratio is 1: 2: 7) pre-mixed in a mixer for 2 hours, placed after 19 hours to make rod stock through vacuum mud milling. After aging for 30 hours, put it into a molding machine, and extrude the tubular original film at a pressure of 4 MPa; after drying with hot air for 15 hours, put it into a carbonization furnace, and raise the temperature at a rate of 3°C / min under the protection of argon. to 950°C and keep the temperature constant for 30 minutes, and then take it out after cooling down to below 100°C. The properties of the obtained conductive carbon film are shown in Table 2.
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