Water-based coating containing graphene/zinc-aluminum hydrotalcite nano composition and preparation method thereof

A zinc-aluminum hydrotalcite and nanocomposite technology, applied in the field of coatings, can solve the problems of VOC content and physical properties not being balanced, polluting the environment and human health, and reducing the physical properties of coatings, etc. Capacitance, the effect of prolonging the service life

Inactive Publication Date: 2017-08-01
东营聚强新材料有限责任公司
View PDF6 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent "201410649883.9 A hydrotalcite-supported graphene flame retardant and its application" prepares hydrotalcite-supported graphene flame retardant by co-precipitation method, but in this flame retardant, only hydrotalcite is supported on the surface of graphene , the modification of graphene is poor. Although the obtained flame retardant can improve the flame retardant effect of polymer materials to a certain extent, the improvement is limited, and no detailed research has been made on whether the coating can improve the corrosion resistance. Note, after research, it is found that the hydrotalcite-supported graphene flame retardant has a limited improvement in the corrosion resistance of the coating and cannot meet the needs of practical applications. In addition, hydrazine hydrate is used as a reducing agent in the preparation process of the flame retardant. Hydrazine hydrate is a highly toxic substance, carcinogenic, and will spontaneously ignite and explode when in contact with oxidants, which not only pollutes the environment but also causes health hazards to the human body
Therefore, the current water-based coatings on the market usually pursue "zero VOC" and "low VOC" too much, resulting in that although the VOC content is reduced, the physical properties of the coating will also be significantly reduced at the same time, so that the VOC content and physical properties cannot be balanced.
[0007] At present, there are no related reports on modifying graphene and hydrotalcite compounds to prepare graphene / hydrotalcite composite fillers, and adding the prepared composite fillers to water-based paints, let alone graphene / hydrotalcite composite fillers. Adding fillers to water-based coatings improves the physical properties of water-based coatings such as high temperature resistance, corrosion resistance, flame retardancy, weather resistance, impact resistance, abrasion resistance, barrier properties, and hardness, and also ensures that water-based coatings do not contain VOC. Good environmental protection performance, related reports that balance the physical properties and VOC content of water-based coatings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water-based coating containing graphene/zinc-aluminum hydrotalcite nano composition and preparation method thereof
  • Water-based coating containing graphene/zinc-aluminum hydrotalcite nano composition and preparation method thereof
  • Water-based coating containing graphene/zinc-aluminum hydrotalcite nano composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1. Preparation of graphene / zinc-aluminum hydrotalcite nanocomposites:

[0055] 1) Disperse 100 mg of graphene oxide in ethylene glycol aqueous solution (50 g of ethylene glycol + 50 g of deionized water), and ultrasonically treat at 30°C for 30 minutes to obtain a graphene solution; 2.2 g of zinc nitrate hexahydrate, 1.1 g of nine Aluminum nitrate in water and 11.5g urea were dissolved in 20ml water to obtain zinc-aluminum hydrotalcite precursor solution; 1.0g coupling agent (3-aminopropyltriethoxysilane) was dissolved in ethylene glycol aqueous solution (49.5g B Glycol+49.5g deionized water), adjust the pH of the solution to be 4, stir for two hours, the coupling agent is fully hydrolyzed, and the coupling agent hydrolyzate is obtained;

[0056] 2) Add the zinc-aluminum hydrotalcite precursor solution dropwise to the graphene solution for about 4 hours, then react at 100°C and pH 8 for 24 hours, complete the reaction, and centrifuge the reaction solution. The separate...

Embodiment 2

[0070] 1. Preparation of graphene / zinc-aluminum hydrotalcite nanocomposites:

[0071] 1) Disperse 250 mg of graphene oxide in an aqueous solution of ethylene glycol (50 g of ethylene glycol + 50 g of deionized water), and ultrasonically treat it at 30°C for 60 minutes to obtain a graphene solution; 2.2 g of zinc nitrate hexahydrate, 1.1 g of nine Aluminum nitrate in water and 15g urea were dissolved in 30ml water to obtain zinc-aluminum hydrotalcite precursor solution; 1.5g coupling agent (3-aminopropyltriethoxysilane) was dissolved in ethylene glycol aqueous solution (49g ethylene glycol +49.5g deionized water), adjust the pH of the solution to be 4, stir for two hours, make the coupling agent fully hydrolyzed, and obtain the coupling agent hydrolyzate;

[0072] 2) Add the zinc-aluminum hydrotalcite precursor solution dropwise to the graphene solution for about 5 hours, then react at 100°C and pH value of 8.5 for 24 hours, end the reaction, and centrifuge the reaction solutio...

Embodiment 3

[0086] 1. Preparation of graphene / zinc-aluminum hydrotalcite nanocomposites:

[0087] 1) Disperse 150 mg of graphene oxide in an aqueous solution of ethylene glycol (50 g of ethylene glycol + 50 g of deionized water), and perform ultrasonic treatment at 30°C for 50 minutes to obtain a graphene solution; 2.2 g of zinc nitrate hexahydrate, 1.1 g of nine Aluminum nitrate in water and 12.5g urea were dissolved in 30ml water to obtain zinc-aluminum hydrotalcite precursor solution; 1.0g coupling agent (3-aminopropyltriethoxysilane) was dissolved in ethylene glycol aqueous solution (49.5g Glycol+49.5g deionized water), adjust the pH of the solution to be 4, stir for two hours, the coupling agent is fully hydrolyzed, and the coupling agent hydrolyzate is obtained;

[0088] 2) Add the zinc-aluminum hydrotalcite precursor solution dropwise to the graphene solution for about 5 hours, then react for 24 hours at 100°C and a pH value of 8.3, finish the reaction, and centrifuge the reaction ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses water-based coating containing a graphene / zinc-aluminum hydrotalcite nano composition and a preparation method thereof. The water-based coating is prepared from the following components in parts by weight: 30 to 50 parts of water-based resin, 25 to 40 parts of water, 0.1 to 0.5 part of dispersing agent, 0.1 to 0.5 part of wetting agent, 0.1 to 0.5 part of defoaming agent, 0.1 to 0.5 part of thickening agent, 0.1 to 0.5 part of film forming aids, 0 to 10 parts of curing agent, 0 to 25 parts of titanium dioxide, 0 to 20 parts of calcium carbonate, and 0.1 to 2.5 parts of graphene / zinc-aluminum hydrotalcite nano composition. The graphene / zinc-aluminum hydrotalcite nano composition is added into the water-based coating, so that the high temperature resistance, the corrosion resistance, the flame retardant property, the weather resistance, the impact resistance, the abrasion resistance, the hardness and the obstruction property of the water-based coating are significantly improved, and the multiple functions of the water-based coating are improved.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a water-based coating containing a graphene / zinc-aluminum hydrotalcite nanocomposite and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] Coatings are playing an increasingly important role in people's lives, and have become an indispensable material for the development of modern society. A large part of the current coatings use toxic and harmful organic substances as solvents and additives in the coating preparation process. During the use process, a large amount of VOC will enter the air, which is quite harmful to the environment. With the global environmental problems becoming more and more prominent, the environmental laws and regulations of various countries are becoming stricter, consumers' awareness of environmental protection is improving, and the coatings industry is also facing the test of environmenta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D175/04C09D5/08C09D5/18C09D7/12
CPCC08K3/04C08K3/26C08K9/04C08K9/06C08K13/06C08K2201/011C09D5/08C09D5/18C09D7/62C09D163/00C09D175/04
Inventor 余大洋温绍国王继虎罗健吴攸同
Owner 东营聚强新材料有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap