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A kind of preparation method of 12-hydroxystearic acid structure modified graphene oxide material

A technology of hydroxystearic acid and graphene, applied in chemical instruments and methods, anti-corrosion coatings, fibrous fillers, etc., can solve the problems of limited durability, poor stability, and limited overall effect, and achieve the reduction of organic and inorganic phase separation , enhanced compatibility, anti-sedimentation and anti-agglomeration performance

Active Publication Date: 2021-10-26
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many researchers have done a lot of research on this, the overall effect in practical applications is limited. At present, the dispersion technology of two-dimensional nanomaterials still has defects such as poor stability, easy sedimentation, and limited durability.

Method used

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  • A kind of preparation method of 12-hydroxystearic acid structure modified graphene oxide material
  • A kind of preparation method of 12-hydroxystearic acid structure modified graphene oxide material
  • A kind of preparation method of 12-hydroxystearic acid structure modified graphene oxide material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036](1) Add accurately weighed 100mg of graphene oxide powder into a mixed liquid of 54.9g of ethanol and 11g of water, ultrasonicate for 30 minutes, then add dropwise 1g of γ-aminopropyltriethoxy dissolved in 33g of ethanol under high-speed stirring base silane, after the dropwise addition was completed, the temperature was raised to 80°C, and the reaction was carried out under medium-speed stirring for 24 hours. After centrifugation, the reaction product was washed with water and ethanol for 2 to 3 times respectively. After cleaning, dry in vacuum at low temperature;

[0037] (2), add 0.5 g of 12-hydroxystearic acid triglyceride (hydrogenated castor oil) to 92 g of mixed solvent (xylene: n-butanol 9:1) to disperse, raise the temperature to 85°C until completely dissolved; the above reaction amino Add 50 mg of silane-modified graphene oxide into 7.45 g of a mixed solvent (xylene: n-butanol 9:1), ultrasonicate for 30 minutes, drop into a mixed solution of hydrogenated castor...

Embodiment 2

[0044] (1) Add accurately weighed 1g of graphene oxide powder into 76g of ethanol liquid, ultrasonicate for 30 minutes, then add dropwise 3g of γ-aminopropyltriethoxysilane dissolved in 20g of ethanol under high-speed stirring, and the addition is completed Afterwards, the temperature was raised to 100°C, and the reaction was carried out under medium-speed stirring for 10 hours. After centrifugation, the reaction product was washed with water and ethanol for 2 to 3 times respectively. After cleaning, dry in vacuum at low temperature;

[0045] (2), add 0.8 g of 12-hydroxystearic acid triglyceride (hydrogenated castor oil) into 79.7 g of methanol, reflux and heat up to 110 ° C under stirring conditions; 80 mg of aminosilane-modified graphene oxide, the product of the above reaction 1, is added to 19.1 g Ultrasonic dispersion in a mixed solvent of methanol and 0.32g sodium methoxide for 20 minutes, after ultrasonic dispersion, dropwise add hydrogenated castor oil and methanol sol...

Embodiment 3

[0047] (1) Add accurately weighed 400mg of graphene oxide powder into a mixed liquid of 66.6g of ethanol and 6g of water, ultrasonicate for 30 minutes, then add dropwise 2g of γ-aminopropyltriethoxy dissolved in 25g of ethanol under high-speed stirring base silane, after the dropwise addition was completed, the temperature was raised to 60°C, and the reaction was carried out under medium-speed stirring for 48 hours. After centrifugation, the reaction product was washed with water and ethanol for 2 to 3 times respectively. After cleaning, dry in vacuum at low temperature;

[0048] (2), add 0.6 g of 12-hydroxystearic acid triglyceride (hydrogenated castor oil) to 87.34 g of mixed solvent (xylene: n-butanol 9:1) to disperse, heat up to 90°C until completely dissolved; the above reaction amino Add 60 mg of silane-modified graphene oxide into 12 grams of mixed solvent (xylene: n-butanol 9:1), ultrasonicate for 30 minutes, add dropwise to the mixed solution of hydrogenated castor oi...

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Abstract

The invention relates to a preparation method of a 12-hydroxystearic acid structure-modified graphene oxide material. The invention adopts aminosilane for bridging: at one end, the silane in the aminosilane is connected with the hydroxyl bond hydrolysis reaction on the graphene oxide ; at the other end, the amino group in the aminosilane is connected to the molecular chain segment of 12-hydroxystearic acid triglyceride (hydrogenated castor oil), so as to realize the in-situ grafting of the 12-hydroxystearic acid molecular segment on graphene oxide surface, using its hydrogen bond network to improve the anti-agglomeration performance of nano-graphene oxide sheets. The silane hydrolysis can be carried out first and then the amino amidation can be carried out, or the amino amidation can be carried out first and then the silane hydrolysis can be carried out. The invention has high dispersibility and can be evenly dispersed in various solvents and resin systems; the connection of organic molecular chains enhances the compatibility between graphene oxide sheets and organic resins or media, and reduces the separation of organic and inorganic phases in the system.

Description

technical field [0001] The invention relates to a nanometer material, in particular to a preparation method of a 12-hydroxystearic acid structure-modified graphene oxide material, and belongs to the technical field of nanocomposite materials. Background technique [0002] Nanomaterials are a research hotspot in this century. Nanomaterials have attracted extensive attention of researchers because of their unique physical and chemical properties. Among them, graphene and graphene oxide, as new two-dimensional carbon nanomaterials discovered in recent years, have unique properties such as excellent optical, electrical, and mechanical properties, large specific surface area, and good interface effects. , micro-nano processing, energy, biomedicine, and drug delivery have important application prospects, and are considered to be a material with great potential. [0003] However, a significant disadvantage of nanomaterials in practical applications is that they are very easy to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/46C09C3/12C09C3/08C09D7/62C09D5/08
CPCC01P2002/01C01P2002/82C01P2004/02C01P2004/04C09C1/46C09C3/006C09C3/08C09C3/12C09D5/08C09D7/62
Inventor 刘强游波任卫东
Owner FUDAN UNIV
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