Preparation method of cellulose nano-whisker/graphene flexible transparent conductive film

A technology of transparent conductive film and nano-whiskers, which is applied in cable/conductor manufacturing, circuits, electrical components, etc., to achieve the effects of good flexibility, high reactivity, and large specific surface area

Inactive Publication Date: 2018-03-13
林荣铨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Use the nanocellulose prepared from oil tea husk to make membrane materials, and then use this as a base to prepare conductive membrane materials of nanocellulose and graphene. At present, there is no research on the use of oil tea husks to prepare nanocellulose composite materials.

Method used

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  • Preparation method of cellulose nano-whisker/graphene flexible transparent conductive film
  • Preparation method of cellulose nano-whisker/graphene flexible transparent conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] S1. Cut the dried camellia husk into small pieces, add it to the mixed solution of NaOH and Na2SO3, heat it to 85°C for 90 minutes 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.

[0038] S2. Add the hemcellulose 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 hemcellulose to KOH is 15:1.

[0039] S3. 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 H2O2 solution mass concentration is 30wt%, and the mass ratio of cellulose to H2O2 is 5:1. The time is 90min, and the bleaching temperature is 65°C.

[0040] S4. Disperse the cellulose obtained in step S3 into distilled water, add a certain amount of oxalic acid, and heat to...

Embodiment 2

[0048] S1. Cut the dried Camellia oleifera husk into small pieces, add it to the mixed solution of NaOH and Na2SO3, heat to 85°C for 90min to obtain helium cellulose; 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

[0049] S2. Add the hemcellulose obtained in step S1 into the KOH solution, heat to 70° C. and react for 90 minutes to obtain cellulose; the mass fraction of the KOH solution is 15 wt%, and the mass ratio of hemcellulose to KOH is 20:1.

[0050] S3. 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 H2O2 solution mass concentration is 30wt%, and the mass ratio of cellulose to H2O2 is 5:2. The time is 90min, and the bleaching temperature is 65°C.

[0051] S4. Disperse the cellulose obtained in step S3 into distilled water, add a certain amount of oxalic ac...

Embodiment 3

[0058] S1. Cut the dried Camellia oleifera husk into small pieces, add it to the mixed solution of NaOH and Na2SO3, heat to 90°C for 90 minutes to obtain helium cellulose; 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

[0059] S2. Add the hemcellulose 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 15wt%, and the mass ratio of hemcellulose to KOH is 15:1.

[0060] S3. 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 H2O2 solution mass concentration is 30wt%, and the mass ratio of cellulose to H2O2 is 5:1. The time is 90min, and the bleaching temperature is 65°C.

[0061] S4. Disperse the cellulose obtained in step S3 into distilled water, add a certain amount of oxalic ...

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Abstract

The invention discloses a preparation method of a cellulose nano-whisker/graphene flexible transparent conductive film. Tea-oil tree shell is taken as the raw material, and tea-oil tree shell cellulose nano-whiskers are obtained by separation through the main steps of cooking through an alkali method, alkali treatment, purification, bleaching, acidolysis, centrifuging, dispersing and the like; theobtained cellulose nano-whiskers are large in specific surface area, high in Young modulus and high in reactivity; next, suction filtration is performed to obtain a substrate film which is uniform and smooth in surface, and relatively high in flexibility, light transmission, mechanical property and thermodynamic property; by taking graphene as a conductive matrix, and under the effect of CTAB, the graphene is uniformly paved on the surface of the substrate film through a suction filtration method to form a uniform and a continuous conductive layer; and by controlling the adding amount of graphene and the number of layers of graphene on the surface of the film, the prepared flexible transparent conductive film has relatively high flexibility, foldable property, elasticity, rigidity and thermal stability and bright application prospect.

Description

technical field [0001] The invention relates to a preparation method of a flexible transparent conductive film, more specifically, to a preparation method of a cellulose nano whisker / graphene flexible transparent conductive film. 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] Cellulose nanowhiskers have good light transmission and flexibility, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B1/04
CPCH01B13/00H01B1/04
Inventor 林荣铨
Owner 林荣铨
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