Composite carbon material and its preparation method and application
A composite carbon and matrix material technology, which is applied in the preparation/purification of carbon, structural parts, electrical components, etc., can solve the problems of numerous operation steps and difficulty in the uniform dispersion of graphite at the nanometer level, and achieve uniform dispersion and excellent electrochemical performance , The effect of high bending strength
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Embodiment 1
[0114] This example is used to illustrate the composite carbon material of the present invention and its preparation method.
[0115] Using petroleum asphalt with a softening point of 150°C as the base material, pulverize the asphalt and pass through a 150-mesh sieve, then mix the obtained undersize particles with natural graphite (150-mesh undersize particles, carbon content ≥ 99.5% by weight) According to the mass ratio of 4:1, stir and mix at room temperature and add it to the kneader. Under the protection of nitrogen, treat it at room temperature for 3 hours at a speed of 500 rpm, and then heat it to 160 °C at a uniform speed for 1 hour, then Treat at a constant temperature of 160°C for 3 hours, and finally treat for 1 hour during the process of cooling to room temperature at a uniform speed, cycle 9 times according to the above process, and blend and knead for 72 hours.
[0116] The kneaded mixture was put into a mold, heated to 1400° C. under the protection of nitrogen, ...
Embodiment 2
[0118] This example is used to illustrate the composite carbon material of the present invention and its preparation method.
[0119] Using coal tar pitch with a softening point of 200°C as the base material, the pitch is pulverized and passed through a 200-mesh sieve, and then the obtained undersize particles are mixed with artificial graphite (200-mesh undersize particles, carbon content > 99% by weight) Stir and mix at room temperature according to the mass ratio of 3:2, then add it to the ball mill, and under the protection of nitrogen, at the rotation speed of 800rpm and the revolution speed of 200rpm, first ball mill at room temperature for 3 hours, and then ball mill for 1.5 hours while heating to 220°C at a constant speed. Then, it was ball milled at 220° C. for 10 hours at a constant temperature, and finally it was ball milled for 1.5 hours while cooling down to room temperature at a constant speed. According to the above-mentioned process, it was circulated 6 times, f...
Embodiment 3
[0128] This example is used to illustrate the composite carbon material of the present invention and its preparation method.
[0129] Using petroleum asphalt with a softening point of 220°C as the base material, the asphalt is pulverized and passed through a 150-mesh sieve, and then the obtained undersize particles are mixed with natural graphite / graphene mixture (mass ratio 5:1, natural graphite is 200 Particles under the mesh sieve, carbon content > 99% by weight, graphene thickness is less than 10 layers) according to 1:1 mass ratio at room temperature after stirring and mixing, add in the internal mixer, under the protection of nitrogen, at room temperature with a speed of 300rpm Treat at low temperature for 3 hours, then heat to 250°C at a constant speed for 2 hours, then treat at 250°C for 8 hours, and finally cool to room temperature at a constant speed for 2 hours, cycle 8 times according to the above process , A total of 120 hours of banburying.
[0130] The mixture ...
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Abstract
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