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Nanometer fibril cellulose substrate-based graphene/nanosilver conductive film and preparation method therefor

A technology of nanofibrils and cellulose, which is used in the equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc. Agglomeration and other problems, to achieve the effect of high flexibility, large specific surface area, and superior electrical conductivity

Inactive Publication Date: 2018-03-13
HUNAN GUOSHENG GRAPHITE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no research on the preparation of nano-cellulose composite materials using camellia oleifera husk. If nano-fibril cellulose can be used as a substrate and graphene can be combined as a conductive film, its conductivity, light transmittance and bending strength will be qualitatively improved. However, the dispersion stability of the graphene solution itself is poor, the sheets are easy to aggregate, and the price is expensive, while graphene oxide can be regarded as a non-traditional soft material with polymers, colloids, films, and amphoteric Molecular characteristics, graphene oxide has long been regarded as a hydrophilic substance because of its superior dispersion in water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a method for preparing a graphene / nanometer silver conductive film based on a nanofibrillar cellulose substrate, comprising the following steps:

[0039] S1. Preparation of basement membrane:

[0040] S11. Cut the dried Camellia oleifera husk into small pieces, add it to the NaOH and Na2SO3 mixed solution, heat to 85°C for 90 minutes to react to obtain helicocellulose; the mass fraction of NaOH and Na2SO3 in the mixed solution is 4wt%, and the mixed solution The mass ratio of NaOH to Na2SO3 is 10:1.

[0041] S12. Add the helium cellulose obtained in step S1 into the KOH solution, heat to 70° C. for 90 minutes to react to obtain cellulose; the mass fraction of the KOH solution is 15 wt %, and the mass ratio of helium cellulose to KOH is 15:1.

[0042]S13. Disperse the cellulose obtained in step S2 into distilled water, add an appropriate amount of H2O2 solution dropwise for bleaching, and obtain bleached cellulose; the mass concentration of the ...

Embodiment 2

[0055] This embodiment provides a method for preparing a graphene / nanometer silver conductive film based on a nanofibrillar cellulose substrate, comprising the following steps:

[0056] S1. Preparation of basement membrane:

[0057] S11. Cut the dried Camellia oleifera husk into small pieces, add NaOH and Na2SO3 in the mixed solution, heat to 85 ° C for 90 minutes, and obtain helicocellulose; the mass fraction of NaOH and Na2SO3 in the mixed solution is 5wt%, and the mixed solution The mass ratio of NaOH to Na2SO3 in the medium is 8:1

[0058] S12. Add the helium cellulose obtained in step S1 into the KOH solution, heat to 70° C. for 90 minutes to react to obtain cellulose; the mass fraction of the KOH solution is 15 wt %, and the mass ratio of helium cellulose to KOH is 20:1.

[0059] S13. Disperse the cellulose obtained in step S2 into distilled water, add an appropriate amount of H2O2 solution dropwise for bleaching, and obtain bleached cellulose; the mass concentration of...

Embodiment 3

[0070] This embodiment provides a method for preparing a graphene / nanometer silver conductive film based on a nanofibrillar cellulose substrate, comprising the following steps:

[0071] S1. Preparation of basement membrane:

[0072] S11. Cut the dried Camellia oleifera husk into small pieces, add it to the NaOH and Na2SO3 mixed solution, heat to 90°C for 90 minutes to react to obtain helicocellulose; the mass fraction of NaOH and Na2SO3 in the mixed solution is 4wt%, and the mixed solution The mass ratio of NaOH to Na2SO3 in the medium is 10:1

[0073] S12. Add the helium cellulose obtained in step S1 into the KOH solution, heat to 80° C. for 90 minutes to react to obtain cellulose; the mass fraction of the KOH solution is 15 wt %, and the mass ratio of helium cellulose to KOH is 15:1.

[0074] S13. Disperse the cellulose obtained in step S2 into distilled water, add an appropriate amount of H2O2 solution dropwise for bleaching, and obtain bleached cellulose; the mass concent...

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Abstract

The invention discloses a high value-added and renewable nano new material by researching on resource utilization of oil-tea camellia shells of tea seed secondary products; increasing of economic income of oil-tea camellia planters in China and high value utilization of oil-tea camellia shells are substantially realized; next, by taking the material as a substrate, a conductive film material withexcellent performance is prepared by combination of the material with a graphene / nanosilver qualified material, so that sustainable green developing economy is realized, and a new technological approach for high value utilization of oil-tea camellia shell resource and preparation of the high-performance transparent conductive film material is provided.

Description

technical field [0001] The invention relates to the technical field of transparent conductive films, more specifically, to a graphene / nano-silver conductive film based on a nanofibril cellulose substrate and a preparation method thereof. Background technique [0002] Due to the excellent photoelectric performance of the transparent conductive film, it is widely used in various optoelectronic devices. At present, the main application fields are: used as touch screen, solar cell, field generation device, flat liquid crystal display and electrochromic display device Electrode materials, etc., the development of transparent conductive films on flexible substrates expands the potential uses of transparent conductive films to the manufacture of flexible light-emitting devices, plastic liquid crystal displays, solar cells, and as thermal insulation materials for plastic greenhouses, glass adhesive films, etc. [0003] Nanocellulose has good light transmittance and flexibility, so t...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00C08B15/02
CPCC08B15/02H01B5/14H01B13/0026
Inventor 林前锋李丽萍
Owner HUNAN GUOSHENG GRAPHITE TECH CO LTD
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