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A kind of rgo/cotton sponge composite material and preparation method thereof

A composite material and cotton sponge technology, applied in the field of preparation of the above-mentioned composite materials, can solve the problems of high preparation cost, high heat loss, and low light-to-heat conversion efficiency, and achieve low heat loss, good mechanical stability, and excellent mechanical stability sexual effect

Active Publication Date: 2022-03-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Purpose of the invention: The present invention aims at the problems of high preparation cost of three-dimensional light-to-heat conversion materials in the prior art, high heat loss and low light-to-heat conversion efficiency due to the disordered arrangement of internal through holes, and provides a RGO / cotton Sponge composite material, the present invention also provides the preparation method of above-mentioned RGO / cotton sponge composite material

Method used

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  • A kind of rgo/cotton sponge composite material and preparation method thereof
  • A kind of rgo/cotton sponge composite material and preparation method thereof
  • A kind of rgo/cotton sponge composite material and preparation method thereof

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Effect test

Embodiment 1

[0019] The present invention prepares the method for RGO / cotton sponge composite material (RGO / cotton-1), specifically:

[0020] (1) Preparation of graphene oxide: the sodium chloride / graphite mixed powder with a mass fraction of 10% sodium chloride was placed in an agate mortar and ground for 10 minutes, washed with ultrapure water and suction filtered to remove chlorine for grinding Sodium chloride solid; after the suction filtration is completed, dry the graphite powder at 60°C for 24 hours, add concentrated sulfuric acid with a mass fraction of 98%, prepare a graphite / concentrated sulfuric acid solution with a concentration of 12.5mg / mL, stir for 22 hours, and dissolve the high Potassium manganate is added to the above-mentioned graphite / concentrated sulfuric acid solution at a mass fraction of 25%, and the whole process is carried out in an ice-water bath to take away a large amount of heat generated by the oxidation process; Stir at low temperature for 30 minutes, then r...

Embodiment 2

[0028] The present invention prepares the method for RGO / cotton sponge composite material (RGO / cotton-2), specifically:

[0029] (1) Preparation of graphene oxide: the sodium chloride / graphite mixed powder with a mass fraction of 10% sodium chloride was placed in an agate mortar and ground for 10 minutes, washed with ultrapure water and suction filtered to remove chlorine for grinding Sodium chloride solid; after the suction filtration is completed, dry the graphite powder at 60°C for 24 hours, add concentrated sulfuric acid with a mass fraction of 98%, prepare a graphite / concentrated sulfuric acid solution with a concentration of 12.5mg / mL, stir for 22 hours, and dissolve the high Potassium manganate is added to the above-mentioned graphite / concentrated sulfuric acid solution at a mass fraction of 25%, and the whole process is carried out in an ice-water bath to take away a large amount of heat generated by the oxidation process; Stir at low temperature for 30 minutes, then r...

Embodiment 3

[0037] The present invention prepares the method for RGO / cotton sponge composite material (RGO / cotton-3), specifically:

[0038](1) Preparation of graphene oxide: the sodium chloride / graphite mixed powder with a mass fraction of 10% sodium chloride was placed in an agate mortar and ground for 10 minutes, washed with ultrapure water and suction filtered to remove chlorine for grinding Sodium chloride solid; after the suction filtration is completed, dry the graphite powder at 60°C for 24 hours, add concentrated sulfuric acid with a mass fraction of 98%, prepare a graphite / concentrated sulfuric acid solution with a concentration of 12.5mg / mL, stir for 22 hours, and dissolve the high Potassium manganate is added to the above-mentioned graphite / concentrated sulfuric acid solution at a mass fraction of 25%, and the whole process is carried out in an ice-water bath to take away a large amount of heat generated by the oxidation process; Stir at low temperature for 30 minutes, then ra...

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Abstract

The invention discloses an RGO / cotton sponge composite material, which is composed of a cotton sponge and reduced graphene oxide loaded on the cotton sponge. The cotton sponge is composed of a layered structure stacked in sequence. The vertically extending channel starts from the central channel in the cotton sponge, and the width of the channel increases successively towards both ends. The invention also discloses a preparation method of the RGO / cotton sponge composite material. Compared with the existing three-dimensional light-to-heat conversion materials, the RGO / cotton sponge composite material of the present invention has a three-dimensional skeleton structure. By forming a structure with wide gaps at both ends and a narrow gap in the middle, it has the advantages of high light-to-heat conversion efficiency and low heat loss. and because the cotton fabric carrier has an effective connection structure (that is, the layers are connected by cotton fibers) and an ordered pore structure (the pore structures are all vertically arranged), so that the flexible RGO / cotton sponge can be used in both dry and dry states. It has excellent mechanical stability in wet state, so the composite material has good mechanical stability.

Description

technical field [0001] The invention relates to an RGO / cotton sponge composite material, and also relates to a preparation method of the composite material. Background technique [0002] The existing three-dimensional light-to-heat conversion materials (graphene-based materials) have good application prospects in the field of solar-driven water evaporation applications. However, the above-mentioned three-dimensional light-to-heat conversion materials have a large amount of raw materials and high cost, and because the pores inside the material are three-dimensional network structures and arranged in a disorderly manner, there are problems of high heat loss and low light-to-heat conversion efficiency during the application process. , and due to the lack of effective connection and disordered pore structure in its internal structure, it has poor mechanical stability in a wet state and is easily damaged during use. Contents of the invention [0003] Purpose of the invention: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/74D06M101/06
CPCD06M11/74D06M2101/06
Inventor 代云茜彭晓丽孟祥钰孙岳明
Owner SOUTHEAST UNIV
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