Method for preparing graphene by pulling jelly
A technology of graphene and jelly, which is applied in the field of drawing and preparing graphene from jelly, which can solve the problems of graphene lattice damage, environmental hazards, etc., and achieve uniform layer distribution, no environmental pollution, and fewer layers Effect
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[0037] Example 1
[0038] The method of preparing graphene by drawing a colloid:
[0039] (1) Kneading graphite flakes with a radial size greater than 50 microns and adhesive glucose at a mass ratio of 1:50 in a kneader for 15 minutes, adding an appropriate amount of glycerin to prepare a colloid with a viscosity of 3000cp;
[0040] (2) The colloid obtained in step (1) is forced to be extruded into a reciprocating single-screw extruder with a length-to-diameter ratio of 48 / 1 and a screw diameter of 20mm. The screw speed is set to 100rpm, and the screw jacket is cyclically cooled. The temperature of the water-controlled screw is lower than 80°C. The reciprocating single-screw extruder reciprocates in the axial direction while rotating and shearing. The graphite dispersed in the adhesive is sheared by the continuously rotating screw and drawn back and forth in the axial direction. As a result, the graphite is continuously drawn and peeled off in the adhesive;
[0041] (3) The drawn ma...
Example Embodiment
[0042] Example 2
[0043] The method of preparing graphene by drawing the jelly:
[0044] (1) The expanded graphite with a radial dimension greater than 50 microns and the adhesive arabinose are kneaded in a kneader at a mass ratio of 1:80 for 20 minutes, and an appropriate amount of glycerin is added to prepare a colloid with a viscosity of 4500cp;
[0045] (2) The colloid obtained in step (1) is fed into a reciprocating single-screw extruder by forced extrusion, the screw speed is set to 150rpm, the screw jacket circulating cooling water controls the temperature of the screw to be lower than 80°C, reciprocating The single-screw extruder is reciprocating along the axial direction while rotating and shearing. The graphite dispersed in the adhesive is sheared by the continuously rotating screw and drawn back and forth in the axial direction, so that the graphite is continuously drawn in the adhesive. Peel off
[0046] (3) The drawn material obtained in step (2) is immersed in distill...
Example Embodiment
[0047] Example 3
[0048] The method of preparing graphene by drawing a colloid:
[0049] (1) The pyrolytic graphite powder with a radial dimension greater than 50 microns and the adhesive mannose are kneaded in a kneader at a mass ratio of 1:100 for 35 minutes, and an appropriate amount of glycerin is added to prepare a colloid with a viscosity of 5000cp;
[0050] (2) The colloid obtained in step (1) is forced to be extruded into a reciprocating single-screw extruder with a length-to-diameter ratio of 25 / 1 and a screw diameter of 45mm. The screw speed is set to 120rpm, and the screw jacket is cyclically cooled. The temperature of the water-controlled screw is lower than 80°C. The reciprocating single-screw extruder reciprocates in the axial direction while rotating and shearing. The graphite dispersed in the adhesive is sheared by the continuously rotating screw and drawn back and forth in the axial direction. As a result, the graphite is continuously drawn and peeled off in the a...
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