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High-efficiency environment-friendly depainting paste for ship

A marine and paint stripping technology, applied in the direction of chemical paint/ink remover, coating, etc., can solve the problems of hindering paint stripping reaction, large surface coating area, large amount of paint stripper, etc., to improve safety, The effect of improving work efficiency

Inactive Publication Date: 2017-06-27
苏州市金纳润特科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large size of the ship and the larger surface coating area, this method of paint removal not only requires a large amount of paint remover, but also consumes a lot of labor and time
[0010] Another problem is that the formula of the paint stripper itself has been fixed, and the hull is inevitably wet. If the paint stripper directly contacts the water-containing hull, the formula of the paint stripper will be diluted, and its paint stripping effect will be compromised; if Allow the hull to dry first and wait many days before stripping the paintwork
Even if a concentrated paint remover is used, it will return to the normal paint removal effect after being diluted with water from the hull, but there are still microorganisms attached to the surface of the hull, and free iron ions and rust produced by electrochemical reactions will hinder the paint removal reaction and cause the paint removal effect not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A highly efficient and environmentally friendly paint stripper for ships, consisting of the following raw materials in parts by weight:

[0031] Dibasic acid ester: 25 parts; dipropylene glycol methyl ether: 12 parts; benzyl alcohol: 5 parts; water: 18 parts; benzotriazole: 0.5 parts; formic acid: 10 parts; boric acid: 8 parts; ethanol: 5 parts ; NP-10: 0.5 parts; sodium gluconate: 2 parts; hydroxyethyl methylcellulose: 3 parts; polyepoxysuccinic acid: 0.05 parts;

[0032] The concrete steps of the preparation method of the high-efficiency paint stripping cream of described environmental protection are as follows:

[0033] (1) After mixing polyepoxysuccinic acid, sodium gluconate, and chlorinated paraffin, stir and ultrasonically disperse at 50°C for 160 minutes;

[0034] (2) Mix benzotriazole, formic acid, boric acid, ethanol, and NP-10 uniformly at 20°C, then quickly pour the ultrasonically dispersed mixture obtained in step (1) at 50°C, at a speed of 800r / m Stir fo...

Embodiment 2

[0038] A highly efficient and environmentally friendly paint stripper for ships, consisting of the following raw materials in parts by weight:

[0039] Dibasic acid ester: 30 parts; dipropylene glycol methyl ether: 18 parts; benzyl alcohol: 8 parts; water: 23 parts; benzotriazole: 1.5 parts; formic acid: 15 parts; boric acid: 12 parts; ethanol: 10 parts ; NP-10: 1.5 parts; Sodium gluconate: 5 parts; Hydroxyethyl methylcellulose: 5 parts; Polyepoxysuccinic acid: 1.5 parts; Chlorinated paraffin: 4 parts.

[0040] The concrete steps of the preparation method of the high-efficiency paint stripping cream of described environmental protection are as follows:

[0041] (1) After mixing polyepoxysuccinic acid, sodium gluconate, and chlorinated paraffin, stir and ultrasonically disperse at 55°C for 50 minutes;

[0042](2) Mix benzotriazole, formic acid, boric acid, ethanol, and NP-10 evenly at 30°C, and then quickly pour the ultrasonically dispersed mixture at 55°C obtained in step (1)...

Embodiment 3

[0046] A highly efficient and environmentally friendly paint stripper for ships, consisting of the following raw materials in parts by weight:

[0047] Dibasic acid ester: 27 parts; dipropylene glycol methyl ether: 16 parts; benzyl alcohol: 6 parts; water: 20 parts; benzotriazole: 1 part; formic acid: 12 parts; boric acid: 10 parts; ethanol: 8 parts ;NP-10: 1 part; Sodium gluconate: 3 parts; Hydroxyethyl methylcellulose: 4 parts; Polyepoxysuccinic acid: 1 part; Chlorinated paraffin: 3 parts.

[0048] The concrete steps of the preparation method of the high-efficiency paint stripping cream of described environmental protection are as follows:

[0049] (1) After mixing polyepoxysuccinic acid, sodium gluconate, and chlorinated paraffin, stir and ultrasonically disperse at 52°C for 100 minutes;

[0050] (2) Mix benzotriazole, formic acid, boric acid, ethanol, and NP-10 evenly at 25°C, and then quickly pour the ultrasonically dispersed mixture obtained in step (1) at 52°C at a spe...

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Abstract

The invention discloses high-efficiency environment-friendly depainting paste for a ship. The depainting paste comprises the following raw materials in parts by weight: 25-30 parts of dibasic ester, 12-18 parts of propylene glycol monomethyl ether, 5-8 parts of benzyl alcohol, 18-23 parts of water, 0.5-1.5 parts of benzotriazole, 10-15 parts of formic acid, 8-12 parts of boric acid, 5-10 parts of alcohol, 0.5-1.5 parts of NP-10, 2-5 parts of sodium gluconate, 3-5 parts of hydroxyethyl methyl cellulose, 0.05-1.5 parts of polyepoxy succinic acid and 2-4 parts of chlorinated paraffin. The depainting paste can be coated on a ship body to cover a depainting area; the raw materials of the depainting paste exert synergistic action, an influence of a microorganism on an old coating is avoided, and the depainting paste permeates into the coating by utilizing an electrochemical reaction, so that high-efficiency depainting is accomplished.

Description

technical field [0001] The invention relates to the technical field of paint removers, in particular to an efficient and environment-friendly paint remover paste for ships. Background technique [0002] Ships floating in the water will be corroded due to electrochemical reactions, so anti-corrosion coatings should be applied to the surface of the hull. The role of anti-corrosion coatings are: [0003] 1. Shielding effect: The shielding effect of the coating is to isolate the metal from the environment to prevent it from being corroded. According to the principle of electrochemical corrosion, the corrosion of the metal under the coating must have the existence of water, oxygen, and ions, and the way of ion conduction. Therefore, if metal corrosion is to be prevented, the coating is required to block water, oxygen and ions from penetrating through the coating to the metal surface. The shielding effectiveness depends on the penetration resistance of the coating. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/00
CPCC09D9/00
Inventor 宋小林
Owner 苏州市金纳润特科技有限公司