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Paint mist coagulant suitable for water-based paint and preparation method of paint mist coagulant

A paint mist coagulant and water-based paint technology, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of a large amount of paint slag, difficulty in separating paint slag from water, and rising COD and other problems, to achieve high-efficiency paint-water separation effect, suppress foam generation, and improve time and speed

Active Publication Date: 2020-12-04
SINO TRUK JINAN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the wide application of water-based paints in the coating industry, the combination of traditional melamine and hydrophilic polyacrylamide-based paint mist coagulants has a large number of disadvantages when dealing with water-based paints, which will cause the following problems: 1) The amount of foaming is large; 2) The matrix is ​​well dispersed, the solid suspended matter is high, and it is easy to disperse into water, making it difficult to separate paint residue from water; 3) Paint residue contains a lot of water; 4) n-butanol, Isopropyl ketone is easy to dissolve in water, it is difficult to react with acid and alkali, and the COD in water will rise rapidly

Method used

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  • Paint mist coagulant suitable for water-based paint and preparation method of paint mist coagulant
  • Paint mist coagulant suitable for water-based paint and preparation method of paint mist coagulant
  • Paint mist coagulant suitable for water-based paint and preparation method of paint mist coagulant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of Agent A

[0031] Get 7.5 parts of polyferric sulfate, put it into 85 parts of water, stir at a speed of 60 revolutions per minute while adding, and stir for 2 hours;

[0032] Take 5 parts of organic bentonite, add it to the solution of step (1), stir at a speed of 20 rpm while adding, stir for 1 hour after adding, and then let stand for 2 hours;

[0033] Then add 0.5 parts of hydroxymethylcellulose sodium and stir for 4 hours, then let it stand for 1 hour; finally add 2 parts of polyoxyethylene polyoxypropylene glyceryl ether, stir for 30 minutes, and obtain A agent;

[0034] (2) Preparation of agent B

[0035]Preparation of lipophilic polyacrylamide solution: Add 4 parts of SPAN-60, 4 parts of TWEEN-80 and 2.4 parts of o-xylene into 39 parts of pure water, stir for 15 minutes; then add 0.1 part of EDTA and stir at high speed, while passing Add nitrogen gas for 30 minutes to remove oxygen; add 28 parts of acrylamide to the above solution and stir fo...

Embodiment 2

[0053] (1) Preparation of Agent A

[0054] Get 7.5 parts of polyferric sulfate, put it into 84 parts of water, stir at a speed of 80 revolutions per minute while adding, and stir for 2 hours;

[0055] Take 5.5 parts of organobentonite, add it to the solution of step (1), stir at a speed of 30 rpm while adding, stir for 1 hour after adding, and then let stand for 2 hours;

[0056] Then add 0.5 parts of sodium hydroxymethylcellulose and stir for 4 hours, then let it stand for 1 hour; finally add 1.5 parts of polyoxyethylene polyoxypropylene glyceryl ether, and stir for 30 minutes to obtain agent A;

[0057] (2) Preparation of agent B

[0058] The preparation of the lipophilic polyacrylamide solution is the same as in Example 1. Take 80 parts of the lipophilic polyacrylamide solution and add 20 parts of C12-C16 alkane mixture, and stir for 15 minutes to obtain agent B.

Embodiment 3

[0060] (1) Preparation of Agent A

[0061] Get 7 parts of polyferric sulfate, put it into 85 parts of water, stir at a speed of 70 revolutions per minute while adding, and stir for 2 hours;

[0062] Take 6 parts of organic bentonite, add it to the solution of step (1), stir at a speed of 20 rpm while adding, stir for 1 hour after adding, and then let stand for 2 hours;

[0063] Then add 0.5 parts of hydroxymethylcellulose sodium and stir for 4 hours, then let it stand for 1 hour; finally add 2 parts of polyoxyethylene polyoxypropylene glyceryl ether, stir for 30 minutes, and obtain A agent;

[0064] (2) Preparation of agent B

[0065] The preparation of the lipophilic polyacrylamide solution is the same as in Example 1. Take 75 parts of the lipophilic polyacrylamide solution and add 25 parts of C12-C16 alkane mixture, and stir for 25 minutes to obtain agent B.

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Abstract

The invention discloses a paint mist coagulant suitable for a water-based paint and a preparation method of the paint mist coagulant. The paint mist coagulant is composed of an agent A and an agent B.The agent A comprises water, organic bentonite, polyferric sulfate, carboxymethyl cellulose sodium and a defoaming agent. The agent B comprises an oleophylic polyacrylamide solution and a C12-C16 alkane mixture, and the organic bentonite and polyferric sulfate double emulsifiers in the agent A can be combined with a water-based paint matrix and a solvent more quickly to form flocculates with charges; the agent B takes oleophylic modified polyacrylamide as a flocculating agent to form polynuclear complex ions, so that the particles can be strongly adsorbed and flocculated, and the COD (Chemical Oxygen Demand) is effectively reduced. According to the invention, the agent A and the agent B are placed at the same dosing point (the distance between the agent A and the agent B is about 20cm), so that the time and speed of agglomeration of paint slag are improved, and a better and more efficient paint-water separation effect can be achieved.

Description

technical field [0001] The invention relates to a paint mist coagulant suitable for water-based paints and a preparation method thereof, belonging to the field of painting technology. Background technique [0002] Water-based paint is a paint that uses water as a solvent. Because it is harmless to the human body, does not pollute the environment, and can avoid construction fires, it has a good application prospect. In the process of paint spraying, the coating rate of paint is generally less than 50%, and more than half of the paint splashes into the air to form overspray paint mist. Therefore, the circulating water system is generally used in the water curtain spray booth (room) to capture paint mist. The paint mist coagulant is a preparation used to extract the paint mist in the circulating water of the water curtain spray room (room). Paint mist coagulant is also called paint remover and paint flocculant. It is generally composed of A and B. Agent A is injected at the ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56
CPCC02F1/52C02F1/5236C02F1/54C02F1/56
Inventor 修亚茹单长彦于安军马春辉江雅珍
Owner SINO TRUK JINAN POWER
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