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Preparation method of bubble-derived graphene-carbon nanotube composite porous membrane

A carbon nanotube composite and carbon nanotube technology, applied in the direction of carbon nanotubes, graphene, nano-carbon, etc., can solve the problems of inability to achieve effective control of pore shape and pore size, slow film forming speed, and difficulty in industrialization, and achieve Realize the effects of large-area batch controllable preparation, easy control of thickness, and simple operation

Inactive Publication Date: 2018-12-11
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent "graphene / carbon nanotube nano-lamination composite film and its preparation method" (CN106995214A) uses the film pulled out of the carbon nanotube array to scoop up the graphene ultra-film formed on the water surface; through the chemical vapor deposition method film formation speed Slow, high cost, difficult to industrialize
However, the disordered arrangement of graphene and carbon nanotubes in these existing composite films cannot achieve effective regulation of pore shape and pore size.

Method used

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  • Preparation method of bubble-derived graphene-carbon nanotube composite porous membrane
  • Preparation method of bubble-derived graphene-carbon nanotube composite porous membrane

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Experimental program
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Effect test

Embodiment 1

[0026] (1) Add 2g of non-ionic surfactant F127 (PEO99-PPO65-PEO99) into 100mL of deionized water, stir, and take 10mL of the upper layer of foam after standing for 5min;

[0027] (2) 10 mL of graphene oxide solution with a concentration of 5 mg / mL and 5 mL of carbon nanotube solution with a concentration of 1 mg / mL are mixed, added to the foam aggregates, and fully stirred to obtain uniform graphene oxide / carbon nanotube bubbles Aggregates;

[0028] (3) Choose a glass plate as the substrate, adjust the distance between the scraper and the substrate to 1000 μm to coat the film, freeze the wet film and the substrate at -80°C, sublimate the ice, peel off the film material, and obtain an oxidized Graphene-carbon nanotube composite porous membrane;

[0029] (4) The graphene oxide-carbon nanotube composite porous membrane was annealed in an Ar atmosphere at 900° C. for 1 h to obtain a graphene-carbon nanotube composite porous membrane.

Embodiment 2

[0031] (1) Add 2g of anionic surfactant sodium dodecyl sulfate (SDS) and 1g of polyvinyl alcohol (PVA) into 100mL of deionized water, stir, and take 10mL of the upper layer of foam after standing for 5min;

[0032] (2) Mix 10mL of graphene oxide solution with a concentration of 10mg / mL and 10mL of carbon nanotube solution with a concentration of 0.1mg / mL, add to the foam aggregate, and fully stir to obtain a uniform graphene oxide / carbon nanotube Agglomerates of bubbles;

[0033] (3) The flexible high polymer PET film is subjected to plasma etching surface hydrophilic treatment, as the flexible substrate of the coating film. Adjust the distance between the scraper and the substrate to be 1500 μm to coat the film, freeze the wet film and the substrate together at -40°C, sublimate the ice, and peel off the film material to obtain a graphene oxide-carbon nanotube composite porous film ;

[0034] (4) The graphene oxide-carbon nanotube composite porous membrane was annealed in an...

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Abstract

The invention belongs to the field of carbon nanomaterial preparation, and relates to preparation of a graphene-carbon nanotube composite porous membrane, in particular to a preparation method of a bubble-derived graphene-carbon nanotube composite porous membrane. The method comprises the steps of: adding a surfactant into water to prepare a bubble agglomerate template; adding a mixed solution ofgraphene oxide and carbon nanotubes into the bubble agglomerate template, and stirring to obtain an uniform graphene oxide / carbon nanotube foam agglomerate; smearing the uniform mixture on a substrateby a scraper to form a film, freeze-drying, and removing the graphene oxide-carbon nanotube composite porous membrane from the substrate; thermally reducing the membrane in an inert atmosphere to obtain an independent self-supporting graphene-carbon nanotube composite porous membrane. The graphene-carbon nanotube composite porous membrane prepared by the method has the advantages of controllablesize and pore size, simple equipment operation and low preparation cost, and can be further enlarged for mass production on a large scale.

Description

technical field [0001] The invention belongs to the field of carbon nanomaterial preparation, and relates to the preparation of a graphene-carbon nanotube composite porous film, in particular to a method for preparing a bubble-derived graphene-carbon nanotube composite porous film. Background technique [0002] Graphene and carbon nanotubes are typical two-dimensional and one-dimensional carbon nanomaterials, respectively. They have excellent properties such as light weight, large specific surface area, excellent mechanical properties, and high electrical and thermal conductivity. They have aroused extensive interest of researchers since their discovery. In order to apply microscopic carbon nanomaterials to practice, they need to be assembled into macroscopic bodies. The composite material of assembled graphene and carbon nanotubes can have both the continuous network structure of carbon nanotubes and the two-dimensional layer structure of graphene. It has important applica...

Claims

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Application Information

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IPC IPC(8): C03C17/22C01B32/158C01B32/182C08J7/06C08L67/02C09D1/00
CPCC03C17/22C08J7/06C08J2367/02C01B32/158C01B32/182
Inventor 张儒静何利民许振华李娜汤智慧
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS