Preparation method of aminosilane-functionalized graphene reinforced silica gel

An aminosilane and propylaminoethoxysilane technology, applied in the field of graphene material reinforced silica gel, can solve problems such as harsh conditions, and achieve the effects of increased toughness and increased compressive strength

Inactive Publication Date: 2011-04-06
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conditions required by these methods are more stringent

Method used

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  • Preparation method of aminosilane-functionalized graphene reinforced silica gel
  • Preparation method of aminosilane-functionalized graphene reinforced silica gel
  • Preparation method of aminosilane-functionalized graphene reinforced silica gel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation of 3-propylaminoethoxysilane functionalized graphene materials

[0022] Add graphene oxide into 3-propylaminoethoxysilane, the dispersion concentration of graphene oxide in 3-propylaminoethoxysilane is 0.5 mg / mL, and reflux reaction at 70°C for 24 hours to obtain Black uniform dispersion, filter the black dispersion with a 0.22 μm nylon filter, wash thoroughly with absolute ethanol, and then disperse in absolute ethanol. The dispersion was filtered through a 0.22 μm nylon filter membrane, washed with absolute ethanol, and dried in a vacuum oven at 30° C. for 24 hours to obtain a graphene material functionalized with 3-propylaminoethoxysilane.

[0023] (2) Preparation of 3-propylaminoethoxysilane functionalized graphene material reinforced silica gel

[0024] The graphene material of the 3-propylaminoethoxysilane functionalization that step (1) obtains is added in the 3-propylaminoethoxysilane, and the graphene material of the 3-propylaminoethoxysilane f...

Embodiment 2

[0026] Use 3-propylaminomethoxysilane, N-aminoethyl-3-aminopropyltrimethoxysilane, N-aminoethyl-3-aminopropylmethyldiethoxysilane or N-aminoethyl -3-aminopropyltriethoxysilane replaces 3-propylaminoethoxysilane, and the rest are the same as in Example 1.

Embodiment 3

[0028] (1) Preparation of 3-propylaminoethoxysilane functionalized graphene materials

[0029] Add graphene oxide into 3-propylaminoethoxysilane, the dispersion concentration of graphene oxide in 3-propylaminoethoxysilane is 0.1mg / mL, and reflux reaction at 70°C for 24 hours to obtain Black uniform dispersion, filter the black dispersion with a 0.22 μm nylon filter, wash thoroughly with absolute ethanol, and then disperse in absolute ethanol. The dispersion was filtered through a 0.22 μm nylon filter membrane, washed with absolute ethanol, and dried in a vacuum oven at 30° C. for 24 hours to obtain a graphene material functionalized with 3-propylaminoethoxysilane.

[0030] (2) Preparation of 3-propylaminoethoxysilane functionalized graphene material reinforced silica gel

[0031] The graphene material of the 3-propylaminoethoxysilane functionalization that step (1) obtains is added in the 3-propylaminoethoxysilane, and the graphene material of the 3-propylaminoethoxysilane fu...

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Abstract

The invention provides a preparation method of aminosilane-functionalized graphene reinforced silica gel, which comprises the following steps: (1) preparation of aminosilane-functionalized graphene; and (2) preparation of aminosilane-functionalized graphene reinforced silica gel. The aminosilane-functionalized graphene has favorable dispersibility in water, ethanol, tetrahydrofuran, dimethyl sulfoxide, 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, N-aminoethyl-3-aminopropyltrimethoxysilane, N-aminoethyl-3-aminopropylmethyldiethoxysilane and N-aminoethyl-3-aminopropyltriethoxysilane. In addition, compared with common silica gel, the compression strength of the 3-aminopropyltriethoxysilane-functionalized graphene reinforced silica gel is increased by 20%, and the toughness thereof is increased by 92%.

Description

technical field [0001] The invention provides a method for preparing aminosilane functionalized graphene material reinforced silica gel. Background technique [0002] Silica gel is an amorphous substance, insoluble in water and any solvent, non-toxic, tasteless, stable in chemical properties, and does not react with any substance except strong alkali and hydrofluoric acid. The chemical composition and physical structure of silica gel determine that it has many characteristics that other similar materials cannot replace: high adsorption performance, good thermal stability, stable chemical properties, and high mechanical strength. [0003] The basic structural unit of silicone products is composed of silicon-oxygen chain links, and the side chains are connected to various other organic groups through silicon atoms. Therefore, the structure of silicone products contains both "organic groups" and "inorganic structures". This special composition and molecular structure makes it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/04C08G77/26C08L83/04C08L83/08C08K9/06C08K3/04C09C1/46C09C3/12
Inventor 牛利韩冬雪杨化锋范立双邓鹏飏张齐贤
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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