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Cobweb-like structural material based on single-walled carbon nanotubes and preparation method of material

A single-wall carbon nanotube and structural material technology, applied in the field of nanomaterials, can solve the problems of high production cost and low output, and achieve the effects of low cost, high mechanical properties, excellent electrical conductivity and light transmittance

Active Publication Date: 2017-11-10
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of high production cost, low output and poor repeatability in the prior art, and provide a single-wall based The preparation method of carbon nanotubes (SWCNTs) imitating spider web structure materials, specifically using the floating catalyst chemical vapor deposition (CVD) method assisted by a magnetic field, realizes the low-cost, large-scale and controllable method of imitating spider web structure materials based on SWCNTs Equipment, an ideal way to obtain "artificial bionic spider webs"

Method used

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  • Cobweb-like structural material based on single-walled carbon nanotubes and preparation method of material
  • Cobweb-like structural material based on single-walled carbon nanotubes and preparation method of material
  • Cobweb-like structural material based on single-walled carbon nanotubes and preparation method of material

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Embodiment 1

[0039] In this embodiment, the substrate for preparing the spider web-like structure material based on single-walled carbon nanotubes (SWCNTs) is a copper sheet. A floating catalyst chemical vapor deposition (CVD) method was used. Specifically as follows: Ferrocene (Fe(C 5 h 5 ) 2 ) Catalyst is placed in the porcelain boat that is bonded with iron sheet, and porcelain boat is placed in the upstream area in the quartz tube of CVD furnace, and the base is placed in the downstream area of ​​quartz tube; After the quartz tube is closed, lead into argon gas with the flow rate of 500 sccm for 30 minutes to exhaust Despite the air inside, heat the quartz tube to 950°C at a heating rate of 15°C / min, and then use a magnet to move the porcelain boat containing the ferrocene catalyst to an area with a temperature of 80°C for sublimation; at a flow rate of 10 sccm Introduce high-purity CH 4 gas, the reaction process was maintained for 30 minutes, and the introduction of CH was stopped...

Embodiment 2

[0041] In this embodiment, the substrate for preparing the spider web-like structure material based on single-walled carbon nanotubes (SWCNTs) is a copper microgrid. A floating catalyst chemical vapor deposition (CVD) method was used. Specifically as follows: Ferrocene (Fe(C 5 h 5 ) 2 ) The catalyst is placed in a porcelain boat glued with iron sheets, the porcelain boat is placed in the upstream area of ​​the quartz tube of the CVD furnace, and the substrate is placed in the downstream area of ​​the quartz tube. After the quartz tube is closed, flow argon gas at a flow rate of 500 sccm for 30 minutes to exhaust the air in the tube; heat the quartz tube to 950 °C at a heating rate of 15 °C / min, and then use a magnet to place the ferrocene catalyst in the porcelain boat Move to an area with a temperature of 60°C for sublimation; pass high-purity CH at a flow rate of 10 sccm 4 gas, the reaction process was maintained for 10 minutes, and the introduction of CH was stopped. 4...

Embodiment 3

[0043] In this embodiment, the substrate for preparing the spider web-like structure material based on single-walled carbon nanotubes (SWCNTs) is a polymethyl methacrylate (PMMA) film (length 80 mm, width 20 mm, thickness 0.5 mm). A floating catalyst chemical vapor deposition method was used. Specifically as follows: Ferrocene (Fe(C 5 h 5 ) 2 ) Catalyst is placed in the porcelain boat that is stuck with iron sheet, and porcelain boat is placed in the upstream area in the quartz tube of CVD furnace, and PMMA substrate is placed in the downstream area of ​​quartz tube, after the quartz tube is closed, feed argon gas with the flow velocity of 500sccm for 30 minutes or more. Exhaust the air in the tube; heat the quartz tube to 950°C at a heating rate of 15°C / min; then use a magnet to move the porcelain boat containing the ferrocene catalyst to an area with a temperature of 120°C for sublimation; at a flow rate of 10sccm Introduce high-purity CH 4 gas, the reaction process was ...

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Abstract

The invention discloses a cobweb-like structural material based on single-walled carbon nanotubes and a preparation method of the material. The cobweb-like structural material based on the single-walled carbon nanotubes is prepared based on an ordinary floating catalyst chemical vapor deposition method and by applying an outer magnetic field, and changing parameters such as the carbon source content, the catalyst evaporation rate. The preparation method has the advantages of a simple process, easy operation, low costs, high product quality, good controllability, and suitability for large-scale production and the like, is an ideal method for obtaining ''artificial bio-inspired cobwebs''. The appearance of the prepared cobweb-like structural material is similar to that of a ''natural cobweb'', and the internal structure of the prepared cobweb-like structural material is also highly similar to that of the ''natural cobweb'', meanwhile, the prepared cobweb-like structural material has very high mechanical properties, and excellent electrical conductivity and light transmittance, and the thickness is less than 100nm, so that if the cobweb-like structural material is loaded on ordinary glass, high-strength transparent conductive glass can be prepared.

Description

technical field [0001] The invention relates to a preparation technology of a spider web-like structure material based on single-walled carbon nanotubes (SWCNTs), and belongs to the field of nanometer materials. Background technique [0002] One of the most amazing things in nature is the very light and soft yet strong webs that spiders make to catch flies and other insects. Spider webs are made of special protein fibers, natural polymer fibers and biological materials, with high strength, elasticity, flexibility, elongation and fracture resistance, as well as small specific gravity, low temperature resistance, relatively UV resistance, biological Degradable and other advantages. The excellent comprehensive performance of spider web is unmatched by natural fibers and synthetic fibers including silk. [0003] The excellent performance of spider web is mainly attributed to its unique fiber structure. Its structural features mainly include: 1) It is a network structure compo...

Claims

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Application Information

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IPC IPC(8): C01B32/162C01B32/159B82Y40/00
Inventor 潘春旭罗成志
Owner WUHAN UNIV
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