Production method for graphite film
A production method and technology of graphite film, applied in chemical instruments and methods, layered products, lamination auxiliary operations, etc., can solve problems such as fracture and cutting trouble, and achieve smooth and neat fractures, flexible product size, and control of product size. Effect
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Embodiment 1
[0012] In this embodiment, the polymer film is PI film, and the high temperature resistant elastic material is carbon felt.
[0013] A production method of a graphite film, comprising the following steps: a production method of a graphite film, comprising the following steps: 1), winding process: a. the polymer film is half-broken by using a dotted line knife at intervals of 0.2 meters Cutting to form a cutting dotted line; b. winding a high temperature resistant elastic material on the graphite core; c. laminating the polymer film with the cutting dotted line and flexible graphite paper, and then winding on the graphite core on the basis of step b; d. When the polymer film and flexible graphite paper wound in step c reach a predetermined thickness, fasten them with carbon ropes; 2), low-temperature carbonization; 3), high-temperature graphitization; 4), unwinding and collecting materials, artificial graphite film The semi-finished product and the flexible graphite paper are r...
Embodiment 2
[0016] Other steps are the same as in Example 1, in step a. the polymer film is half-cut with a dotted line knife every 2 meters to form a cut dotted line; in said step d, when the PI film and flexible graphite paper wound in step c After reaching the predetermined thickness, wrap it with a graphite plate and fasten it with a carbon rope. Since the graphite sheet is wrapped and then fastened with a carbon rope, the fastening force of the carbon rope can be more evenly applied to the inner coil.
Embodiment 3
[0018] Other steps are the same as in Example 1, in step a. the polymer film is carried out half-break die-cutting with a dotted line knife every 5 meters to form a cut dotted line; in said step d, when the PI film and flexible graphite paper wound in step c After the predetermined thickness is reached, the carbon felt of the predetermined thickness is wound, then wrapped with a graphite plate, and then fastened with a carbon rope. Since the carbon felt is wrapped inside and outside, and is finally wrapped with a graphite plate and then fastened with a carbon rope, the fastening force of the carbon rope can act more evenly on the inner coil.
[0019] The low-temperature carbonization in the present invention is a step of preheating the polymer film to a temperature of at least about 800° C., and is a step of thermally decomposing the polymer film to obtain a carbonized film. High-temperature graphitization is a process in which the carbonized film or polymer film produced in t...
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