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A kind of airgel for anti-haze coating and preparation method thereof

An airgel and anti-smog technology, which is applied in the direction of chemical instruments and methods, coatings, carbon compounds, etc., can solve the problems of poor anti-smog performance and achieve good adhesion, stable performance, and non-polluting raw material sources Effect

Active Publication Date: 2021-05-28
江苏晨光涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the relatively poor anti-haze performance of existing coatings, and provide an aerogel for anti-haze coatings and a preparation method thereof

Method used

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  • A kind of airgel for anti-haze coating and preparation method thereof
  • A kind of airgel for anti-haze coating and preparation method thereof
  • A kind of airgel for anti-haze coating and preparation method thereof

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preparation example Construction

[0041] Specifically, an airgel for anti-haze coatings of the present invention is prepared by the following steps:

[0042] Step 1, preparation of nano Ag-carbon microspheres

[0043] Adding AgNO to the suspension of carbon microspheres with a mass concentration of 0.3-0.5% wt 3 solution to obtain a mixed solution, and the Ag in the mixed solution + The concentration is 1~1.5mol / L, the obtained carbon microspheres-AgNO 3 The mixed solution was stirred with a 180-220rpm magnetic rotor for 20-24 hours, then centrifuged at a speed of 2800-3000rpm for 10-15min to remove excess silver ions, and then the obtained nano-Ag-carbon microspheres were rinsed with distilled water and alcohol, and again Ultrasonic dispersion is used for 45-60 minutes to obtain uniform nanometer Ag-carbon microspheres. The carbon microsphere is a hollow structure with a specific surface area of ​​1800-2200m 2 / g, the size of nano-silver ions in the obtained nano-Ag-carbon microspheres is 50-200nm. The p...

Embodiment 1

[0054] A method for preparing an airgel for anti-haze coatings in this embodiment, the schematic diagram and flow chart of the preparation process are as follows image 3 , Figure 4 As shown, it specifically includes the following steps:

[0055] (1) Preparation of carbon microspheres: using cellulose as a raw material, carbon microspheres were prepared by hydrothermal carbonization.

[0056] Specifically, weigh 0.8g of cellulose into a 20ml sample bottle, add 15mL of deionized water, stir magnetically for 30min at a speed of 30r / min, and disperse the cellulose evenly in the solution, then place it in a 25mL Inside the hydrothermal reactor. After sealing the hydrothermal reaction kettle, put it into a muffle furnace and keep it constant for 7 hours at 220°C, and then naturally cool it to room temperature in the muffle furnace. The substance in the lower layer of the hydrothermal reaction kettle was suction-filtered, washed with absolute ethanol and distilled water, and dri...

Embodiment 2

[0063] A kind of preparation method of graphene / Ag-carbon microsphere airgel coating of the present embodiment, its preparation process schematic diagram and flow chart are as follows image 3 , Figure 4 As shown, it specifically includes the following steps:

[0064] (1) Preparation of carbon microspheres: using cellulose as a raw material, carbon microspheres were prepared by hydrothermal carbonization.

[0065]Specifically, weigh 0.8g of cellulose into a 20ml sample bottle, add 10mL of deionized water, stir magnetically at a speed of 40r / min for 20min, and disperse the cellulose evenly in the solution, then place it in a 25mL Inside the hydrothermal reactor. After sealing the hydrothermal reaction kettle, put it into a muffle furnace and keep it constant for 8 hours at 200°C, and then naturally cool it to room temperature in the muffle furnace. The substance in the lower layer of the hydrothermal reaction kettle was suction-filtered, washed with absolute ethanol and dis...

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Abstract

The invention discloses an airgel for anti-haze paint and a preparation method thereof, belonging to the technical field of new coating materials. The preparation steps of airgel for anti-haze coating of the present invention are: first prepare nanometer Ag-carbon microsphere, then combine it with AgNO 3 The solution is mixed, and after stirring, centrifugal separation, washing and ultrasonic dispersion, uniform nano-Ag-carbon microspheres are obtained; then the graphene oxide suspension is added to the nano-Ag-carbon microsphere solution, and 5-10% wt cysteine ​​is added acid, stirred to obtain a hydrogel mixture; finally, the hydrogel mixture was placed in hot oil at 75-85°C for 8-10h, rinsed, and post-treated by freeze-drying to obtain graphene / Ag-carbon microsphere aerogel . The airgel prepared by the invention has super high VOCs adsorption performance and self-degradation ability, and adding it to the coating as an additive can effectively improve its anti-smog effect.

Description

technical field [0001] The invention belongs to the technical field of new coating materials, and more specifically relates to an aerogel for an anti-smog coating and a preparation method thereof. Background technique [0002] With the continuous growth of my country's national economy and the continuous improvement of people's living standards, environmental protection has become a main theme for people to pursue a healthy and green life. As people have higher and higher requirements for coatings for indoor and outdoor decoration, more and more people focus on anti-smog and environmental protection coatings in the process of choosing functional coatings. Forest-like fresh air", therefore, it is of great significance to research and develop coatings with anti-smog effect. [0003] Graphene is the thinnest and strongest material known to human beings. It contains a single layer of carbon atoms. These atoms are connected in a honeycomb arrangement. The thickness of graphene i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/62C01B32/348
Inventor 冒海燕李保松缪国元黄润州杨蕊兰平梅长彤周晓燕周定国储富强马宇飞
Owner 江苏晨光涂料有限公司
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