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Internal mixer for preparing graphene through tensile peeling and method for preparing graphene

A stretching exfoliation and graphene technology, which is applied in the field of material processing, can solve the problems such as the limited exfoliation efficiency of graphene size uniformity, and achieve the effects of easy large-scale industrial production, avoiding damage, and easy storage and transportation.

Inactive Publication Date: 2017-05-17
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the banburying equipment in the plan is not special, mainly using carbohydrates as the bonding and peeling carrier, and the size uniformity and peeling efficiency of the graphene obtained by peeling are limited.

Method used

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  • Internal mixer for preparing graphene through tensile peeling and method for preparing graphene
  • Internal mixer for preparing graphene through tensile peeling and method for preparing graphene

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 Shown and figure 2 As shown, an internal mixer for preparing graphene by stretching and peeling in the present invention includes a barrel 10, a temperature control device 11 is arranged inside the barrel 10, the temperature control device 11 is installed on the inner wall of the barrel 10, and the temperature control device 11 Including a thermocouple to measure the temperature in real time and feedback to control the material processing temperature to maintain a certain range. The diameter of the barrel 10 is 1000 mm. The feeding mechanism 20 is arranged on the barrel 10 and is composed of at least one feeding port 21; the internal mixing mechanism 30 is connected to the feeding mechanism 20 and includes two cam rotors with a curved side triangle in cross section as the stirring shaft 31. The ratio of the length of the shaft to the length of the side of the curved triangle is 4.5 / 1, and the stirring shaft body is covered with a wear-resistant ceramic...

Embodiment 2

[0050] Such as figure 1 Shown and figure 2 As shown, an internal mixer for preparing graphene by stretching and peeling in the present invention includes a barrel 10, a temperature control device 11 is arranged inside the barrel 10, the temperature control device 11 is installed on the inner wall of the barrel 10, and the temperature control device 11 Including a thermocouple to measure the temperature in real time and feedback to control the material processing temperature to maintain a certain range. The diameter of the barrel 10 is 800 mm. The feeding mechanism 20 is arranged on the barrel 10 and is composed of at least one feeding port 21; the internal mixing mechanism 30 is connected to the feeding mechanism 20 and includes two cam rotors with a curved side triangle in cross section as the stirring shaft 31. The ratio of the length of the shaft to the length of the side of the curved triangle is 4.5 / 1, and the stirring shaft body is covered with a wear-resistant ceramic ...

Embodiment 3

[0057] Such as figure 1 Shown and figure 2 As shown, an internal mixer for preparing graphene by stretching and peeling in the present invention includes a barrel 10, a temperature control device 11 is arranged inside the barrel 10, the temperature control device 11 is installed on the inner wall of the barrel 10, and the temperature control device 11 Including a thermocouple to measure the temperature in real time and feedback to control the material processing temperature to maintain a certain range. The diameter of the barrel 10 is 1100 mm. The feeding mechanism 20 is arranged on the barrel 10 and is composed of at least one feeding port 21; the internal mixing mechanism 30 is connected to the feeding mechanism 20 and includes two cam rotors with a curved side triangle in cross section as the stirring shaft 31. The ratio of the length of the shaft to the length of the side of the curved triangle is 7 / 1, and the stirring shaft body is covered with a wear-resistant ceramic l...

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Abstract

The invention provides an internal mixer for preparing graphene through tensile peeling and a method for preparing graphene. The internal mixer comprises a machine barrel, a feeding mechanism, an internal mixing mechanism, a power transmission mechanism and a collection mechanism, wherein the internal mixing mechanism comprises two cam rotors of which the cross sections are curved triangles as stirring shafts, and the two rotors generate relatively small shear force in a rotation process and generate relatively large compressive force and tensile force, so that a pasty graphite mixture is indirectly stretched, sheared and stripped to form a graphene precursor by a viscous additive under the bonding effect of the viscous additive when continuously passing through the stirring shafts, and thus the lattice damage of over-large shearing force to graphene is effectively avoided. The internal mixer is simple in preparation technology, wide in raw material source, free of pollution and low in cost; prepared graphene is high in quality and easy to store and transport; and large-scale industrial production is easy to implement.

Description

Technical field [0001] The invention relates to the field of material processing, in particular to an internal mixer for preparing graphene by stretching and peeling and a method for preparing graphene. Background technique [0002] Graphene is a planar carbon nanomaterial composed of a layer of carbon atoms. It is currently the thinnest two-dimensional material known, with a thickness of only 0.335nm, and it is composed of a hexagonal lattice. The carbon atoms in graphene are connected by σ bonds, which endows graphene with extremely excellent mechanical properties and structural rigidity. Moreover, in graphene, each carbon atom has an unbonded p-electron. These p-electrons can move freely in the crystal, and the speed of movement is as high as 1 / 300 of the speed of light, which gives graphene good conductivity. In terms of optics, graphene is almost completely transparent, absorbing only 2.3% of light. Graphene has peculiar mechanical, optical and electrical properties, and g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/19
CPCC01B2204/04C01B2204/32
Inventor 陈庆曾军堂王镭迪
Owner CHENDU NEW KELI CHEM SCI CO LTD
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