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Preparation method of modified graphene/acrylate composite water-based coating

An acrylate and water-based coating technology, applied in the coating and other directions, can solve the problems of poor dispersion, easy stacking and agglomeration, and achieve the effects of improving mechanical properties, improving dispersion uniformity, and reducing agglomeration.

Active Publication Date: 2019-01-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of preparation method of modified graphene / acrylate composite water-based paint aiming at the shortcomings of existing graphene in water-based paint that are easy to stack and agglomerate, and not well dispersed

Method used

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  • Preparation method of modified graphene/acrylate composite water-based coating
  • Preparation method of modified graphene/acrylate composite water-based coating
  • Preparation method of modified graphene/acrylate composite water-based coating

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 1. Use acidified intercalation and ultrasonic treatment of expanded graphite to obtain few-layer graphene (1~5 layers): add 1g of expanded graphite to ethanol / water mixture (13:7, v / v, 400mL), at room temperature Stirred under 24 h, then sonicated (KQ-500DB, 500W) for another 20 h, the sample was collected by filtration, then dried in a vacuum oven, a part of this sample (500 mg) was added to the pre-cooled in ice bath Nitric acid / sulfuric acid (1:3, v / v, 80 mL), after sonication for 3 days, the mixture was transferred to water (1 L), and the treated graphite was collected by filtration and washed repeatedly with deionized water until neutral pH, and dried in a vacuum oven;

[0028] 2. Preparation of cetyltrimethylammonium bromide intercalated graphene: add 1.8g of cetyltrimethylammonium bromide powder into 58mL deionized water and stir to dissolve; After the graphene is ground and refined, it is added to the cetyltrimethylammonium bromide solution prepared above, and ...

Embodiment 2

[0032] 1. Use acidified intercalation and ultrasonic treatment of expanded graphite to obtain few-layer graphene (1~5 layers): add 1g of expanded graphite to ethanol / water mixture (13:7, v / v, 400mL), at room temperature Stirred under 24 h, then sonicated (KQ-500DB, 500W) for another 20 h, the sample was collected by filtration, then dried in a vacuum oven, a part of this sample (500 mg) was added to the pre-cooled in ice bath Nitric acid / sulfuric acid (1:3, v / v, 80 mL), after sonication for 3 days, the mixture was transferred to water (1 L), and the treated graphite was collected by filtration and washed repeatedly with deionized water until neutral pH, and dried in a vacuum oven;

[0033] 2. Preparation of graphene intercalated with cetyltrimethylammonium bromide: add 3g of cetyltrimethylammonium bromide powder into 58mL deionized water and stir to dissolve; add 0.3g of few-layer graphite Grinding and refining treatment, add it to the cetyltrimethylammonium bromide solution ...

Embodiment 3

[0036] 1. Use acidified intercalation and ultrasonic treatment of expanded graphite to obtain few-layer graphene (1~5 layers): add 1g of expanded graphite to ethanol / water mixture (13:7, v / v, 400mL), at room temperature Stirred under 24 h, then sonicated (KQ-500DB, 500W) for another 20 h, the sample was collected by filtration, then dried in a vacuum oven, a part of this sample (500 mg) was added to the pre-cooled in ice bath Nitric acid / sulfuric acid (1:3, v / v, 80 mL), after sonication for 3 days, the mixture was transferred to water (1 L), and the treated graphite was collected by filtration and washed repeatedly with deionized water until neutral pH, and dried in a vacuum oven;

[0037] 2. Preparation of cetyltrimethylammonium bromide intercalated graphene: add 4.2g of cetyltrimethylammonium bromide powder into 58mL deionized water and stir to dissolve; After the graphene is ground and refined, it is added to the cetyltrimethylammonium bromide solution prepared above, and ...

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Abstract

The invention discloses a preparation method of a modified graphene / acrylate composite water-based coating, and belongs to the field of water-based coatings. The method comprises the following steps:preparing graphene according to a liquid-phase separating method; performing intercalated modifying on the graphene through a cationic surface active agent which is hexadecyl trimethyl ammonium bromide; then polymerizing in situ; copolymerizing sodium p-styrenesulfonate and acrylate to obtain modified acrylate; preparing hexadecyl trimethyl ammonium bromide modified graphene / acrylate composite water-based coating under the electrostatic interaction of electropositive ammonium ion and electronegative sulfonate group. The prepared modified graphene / acrylate composite water-based coating has theadvantages that the outstanding heat conduction capacity, the antistatic performance and the mechanical performance of the graphene are fully applied to acrylate, so that the performance of the composite coating can be greatly improved; the composite coating is outstanding in mechanical performance and heat conduction performance.

Description

technical field [0001] The invention belongs to the field of water-based paint, in particular to a preparation method of modified graphene / acrylate composite water-based paint. Background technique [0002] Graphene is a single-layer sheet-like carbon material composed of honeycomb carbon, with a thickness of about 0.334nm, a large specific surface area, good thermal and chemical stability, strong hydrophobicity, and easy chemical Modification and other advantages, and has ultra-high thermal conductivity (about 5300 W m -1 ·K -1 ), these properties make it better applied in the field of thermal conductive materials. [0003] Cationic surfactants are mainly nitrogen-containing organic amine derivatives. Since the nitrogen atom in the molecule contains a lone pair of electrons, it can combine with the hydrogen in the acid molecule through hydrogen bonds to make the amino group positively charged. Cetyltrimethylammonium bromide is just a kind of cationic surfactant. In acidi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D7/62C08F220/18C08F220/06C08F228/02
CPCC08F220/18C09D141/00C09D7/62C08F220/1804C08K9/04C08K3/042C08F220/06C08F228/02
Inventor 郑玉婴张杰
Owner FUZHOU UNIV
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