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Preparation method of superconductive, thermally-conductive, ultrahigh-strength graphene composite film

A graphene composite, ultra-high-strength technology, which is applied in the field of preparation of thermally conductive, superconductive, and ultra-high-strength graphene composite films, can solve problems such as the absence of graphene and carbon atoms, and achieve easy condition control and simple process. Effect

Inactive Publication Date: 2011-09-14
耿世达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The structure of graphene is very stable. So far, researchers have not found any missing carbon atoms in graphene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 100g nano-graphene plus 900g molar ratio of ethylenediamine and acetic acid are respectively put into the feeding hopper of the graphene composite film continuous machine, and then filled with nitrogen protection in the ribbon mixer, at room temperature Mix for 10 hours; the mixed material is sucked into the heating box by the vacuum pump through the feeding valve. After the feeding is completed, start the electric heating. The material mouth freely falls to the distribution area, and then the scraper and the distribution roller spread the mixture evenly, and the material is sent to the pre-pressing roller through the conveyor belt, and the pressure is controlled at 1 atmosphere. The pre-pressed graphite carbon base material is pressed The roller is sent to the next set of pressing rollers for compaction, and the carbon-based material belt compacted into a film is sequentially passed to the final compacting roller (the fourth set of pressing rollers) to press the mixed m...

Embodiment 2

[0021] 100g nano-graphene plus 900g molar ratio of 1: 1 ethanol and acetic acid are put into the hopper of graphene composite film continuous machine respectively, then fill the ribbon mixer with nitrogen protection, and mix at room temperature 10 hours; the mixed material is sucked into the heating box by the vacuum pump through the feeding valve, and after the feeding is completed, start the electric heating. The material mouth freely falls to the distribution area, and then the scraper and the distribution roller spread the mixture evenly, and the material is sent to the pre-pressing roller through the conveyor belt, and the pressure is controlled at 1 atmosphere. The pre-pressed graphite carbon base material is pressed The roller is sent to the next set of pressing rollers for compaction, and the carbon-based material belt compacted into a film is sequentially passed to the final compacting roller (the fourth set of pressing rollers) to press the mixed material into a compo...

Embodiment 3

[0023] 300g nanometer graphene, 700g molar ratio are 1: 1 toluene diisocyanate and ethylenediamine are put into the feed hopper of graphene composite thin film continuous machine respectively, then fill into nitrogen protection in ribbon mixer, at room temperature The mixed material is sucked into the heating box by the vacuum pump through the feeding valve. After the feeding is completed, the electric heating is started. The heating temperature is 500°C and the heating time is 20 hours; the heated carbon-based mixed material is heated The material opening of the box falls freely to the distribution area, and then the scraper and the distribution roller spread the mixture evenly, and the material is sent to the pre-pressing roller through the conveyor belt, and the pressure of the roller is controlled to 10 atmospheres. The graphite carbon base material is conveyed to the next set of press rolls for compaction, and the carbon-based material belt compacted into a film is sequent...

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Abstract

The invention relates to a preparation method of a superconductive, thermally-conductive, ultrahigh-strength graphene composite film, which comprises the following steps: step 1, mixing 10%-80% by mass of nanometer graphene and 20%-90% by mass of liquid or powdery bridging carbon groups in a nitrogen-filling mixer at room temperature for 1-10 hours; step 2, pumping the mixed materials into a heating box by a vacuum pump, heating the materials to 100-500 DEG C for 1-20 hours; step 3, after heating, allowing the mixed materials to fall freely into a material distribution zone, uniformly spreading out the mixed materials by a scraper and a material-distributing roller, feeding the materials into a pre-press roller with a controlled pressure of 0.1-1.0 Mpa, pressing the materials tightly with several groups of press rollers so as to pull out a composite film with a thickness less than 100 microns; step 4, scanning the composite film line by line through a laser beam, an electron beam or an ion beam to allow the temperature of the scanned part of the composite film to be above 3000 DEG C so as to realize carbonization, graphitization, crystal growth, and the perfect combination of the molecular skeleton of nanometer graphene and the molecular skeleton of the bridging carbon groups; step 5, trimming the scanned composite film and rolling up. The invention has simple and compact steps, and can realize production with high efficiency by one continuous apparatus.

Description

technical field [0001] The invention relates to a preparation method of a superconducting, thermally conducting, ultrahigh-strength graphene composite film. Background technique [0002] Since British scientists successfully prepared single-layer graphene in the laboratory in 2004, graphene has rapidly become a research hotspot in the field of nanoscience. Graphene is a new type of carbonaceous material with the thickness of a single layer of carbon atoms, which is arranged in a two-dimensional honeycomb lattice structure. It is the basic unit of all other dimensional carbonaceous materials. Its thickness is only 0.335nm, which is only 1 / 200,000th that of hair. It can be wrapped into zero-dimensional fullerene, curled into one-dimensional carbon nanotubes, and stacked into three-dimensional graphite. [0003] The advent of graphene has caused a research boom all over the world. Not only is it the thinnest known material, it's also very strong and rigid; as a single substan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 耿世达
Owner 耿世达
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