A kind of paint mist coagulant suitable for water-based paint and preparation method thereof

Abstract

The invention discloses a paint mist coagulant suitable for water-based paint and a preparation method thereof. The paint mist coagulant is composed of A agent and B agent, wherein, the components of A agent are: water, organic bentonite, polyferric sulfate, sodium hydroxymethyl cellulose and defoamer; the components of B agent are: hydrophilic Oil-based polyacrylamide solution, C12‑C16 alkane mixture, organic bentonite and polyferric sulfate double emulsifier in agent A can combine with water-based paint base and solvent faster to form charged flocs; agent B uses lipophilic group The modified polyacrylamide is used as a flocculant to form multi-nuclear complex ions, so it can be strongly adsorbed to flocculate the particles and effectively reduce COD. In the present invention, agent A and agent B are placed at the same dosing point (the return port of circulating water, the distance between the two is about 20 cm), which improves the time and speed of paint slag agglomeration, and can achieve better and more efficient paint. Water separation effect.

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...

Examples

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.

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...

Examples

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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