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Wear-resistant dispersing agent based on polyaniline nanofibers and preparation method thereof

A technology of nanofibers and polyaniline, applied in the direction of coating, etc., can solve the problems of large particles and uneven particle size distribution, and achieve the effects of simple preparation process, improved wear resistance and color development, and good performance

Pending Publication Date: 2022-02-25
扬州市立达树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersant composition mixed with various functional additives generally has problems such as large particles and uneven particle size distribution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The preparation process of described modified graphene is:

[0028] Take 1g of graphene oxide and ultrasonically disperse it in 50ml of tetrahydrofuran, then add 50ml of deionized water and mix evenly; dissolve 10g of KH570 in absolute ethanol, and then add it dropwise to the aqueous solution of graphene oxide, sonicate for 30min, and continue stirring at room temperature for 30min. Adjust the pH to weak acidity, then raise the temperature to 50-70°C and stir for 24 hours; after cooling to room temperature, centrifuge, wash with ethanol and water 3-4 times, and dry to obtain KHGO;

[0029] Take 1g of KHGO and ultrasonically disperse it in 50ml of tetrahydrofuran, add 10g of 2-acrylamide-2-methylpropanesulfonic acid and 0.1g of benzoyl peroxide in a molar ratio, freeze-vacuumize-nitrogen filling and thawing repeat three times, and then Under protection, react at 70°C for 8-12 hours; after the reaction is completed, remove the solvent by rotary evaporation, and dry to obt...

Embodiment 1

[0030] Embodiment 1: A kind of preparation method of wear-resistant dispersant based on polyaniline nanofiber

[0031] 1) Add 20 parts of silicon carbide powder, 0.5 parts of sodium polyacrylate and 100 parts of water into the stirred reactor, and stir at high speed to form a suspension;

[0032] 2) Heat the suspension to 60-70°C, then add 10 parts of alkyl polyoxyethylene ether, stir evenly at a medium speed, then add 5 parts of polyaniline nanofibers and 8 parts of modified graphene, and keep stirring at a medium speed evenly;

[0033] 3) After cooling down to 30-40°C, add 5 parts of glycerin to the stirring reaction kettle and stir evenly at a low speed.

[0034] 4) Cooling and discharging, filtering and drying, and pulverizing to obtain a dispersant.

Embodiment 2

[0035] Embodiment 2: A kind of preparation method of wear-resistant dispersant based on polyaniline nanofiber

[0036] 1) Add 25 parts of silicon carbide powder, 0.8 parts of sodium polyacrylate and 120 parts of water into the stirred reactor, and stir at high speed to form a suspension;

[0037] 2) Heat the suspension to 60-70°C, then add 15 parts of alkyl polyoxyethylene ether, stir evenly at a medium speed, then add 7.5 parts of polyaniline nanofibers and 11 parts of modified graphene, and keep stirring at a medium speed evenly;

[0038] 3) After cooling down to 30-40°C, add 6 parts of glycerin to the stirring reaction kettle and stir evenly at a low speed.

[0039] 4) Cooling and discharging, filtering and drying, and pulverizing to obtain a dispersant.

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PUM

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Abstract

The invention relates to a wear-resistant dispersing agent based on polyaniline nanofibers and a preparation method thereof. The preparation process of the wear-resistant dispersing agent comprises the following steps of: adding silicon carbide powder, sodium polyacrylate and water into a stirring reaction kettle, and stirring at a high speed to form a suspension; heating, adding alkyl polyoxyethylene ether, uniformly stirring at a medium speed, adding polyaniline nanofibers and modified graphene, and uniformly stirring at a medium speed; and cooling to 30-40 DEG C, adding glycerol, uniformly stirring at a low speed, cooling, discharging, filtering, drying and crushing to obtain the dispersing agent. According to the scheme, the polyaniline nanofibers and the modified graphene are added to prepare the dispersing agent, and when the dispersing agent is used for preparing a paint coating, the wear resistance and the color developing property of the coating are improved. The preparation method does not need a high-temperature and high-pressure synthesis environment, the preparation process is relatively simple, and the prepared dispersing agent is good in performance.

Description

technical field [0001] The invention relates to the technical field of dispersants, in particular to a polyaniline nanofiber-based wear-resistant dispersant and a preparation method thereof. Background technique [0002] Dispersant is a kind of surface active agent with two opposite properties of lipophilicity and hydrophilicity in the molecule, which can uniformly disperse solid and liquid particles of inorganic and organic pigments that are difficult to dissolve in liquid, and can also prevent A class of surfactants that settle and aggregate particles to form a stable suspension. [0003] At present, in addition to the above-mentioned effects, researchers have begun to work on the development of dispersant compositions with various properties. For example, in some coatings or ink systems, when used to disperse pigments and fillers, it is necessary to prevent floating and fading. Or increase the color development, etc., the paint finally forms a coating, which in turn requ...

Claims

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Application Information

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IPC IPC(8): C09D7/65C09D7/62C09D7/61
CPCC09D7/65C09D7/62C09D7/61C09D7/70
Inventor 郭顺政郭春和张剑
Owner 扬州市立达树脂有限公司