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Durable antifouling liquid and preparation method thereof

An antifouling liquid and long-lasting technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problem of difficult to completely seal the micropores on the surface of the substrate, low storage stability of antifouling liquid, The problem of poor adhesion on the surface of the substrate can achieve good antifouling effect, good storage stability and long-lasting antifouling effect

Active Publication Date: 2020-04-14
HT FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the problem is that when multiple silicones are used in combination, due to their inconsistent expansion coefficients, the coating film is easy to crack, and the anti-fouling liquid has poor permeability, it is difficult to completely seal the micropores on the surface of the substrate, and the adhesion on the surface of the substrate is weak. Poor, the storage stability of the antifouling liquid is low, and the film-forming components in it are easy to agglomerate and precipitate

Method used

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  • Durable antifouling liquid and preparation method thereof
  • Durable antifouling liquid and preparation method thereof
  • Durable antifouling liquid and preparation method thereof

Examples

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preparation example Construction

[0036] The second aspect of the present invention provides the preparation method of the above-mentioned durable antifouling liquid, comprising the following steps: adding methylated high-hydrogen-containing silicone oil, low-hydrogen-containing silicone oil, and silica sol to the solvent in sequence under stirring, and stirring for 5- 10 minutes; then continue to add polymer surfactants and sulfonate surfactants into the solvent sequentially under stirring, and stir for 5 to 10 minutes; finally add stabilizers to make the pH of the solution system in the range of 7 to 9 Stir for at least 30 minutes to obtain the durable antifouling solution.

[0037] The applicant unexpectedly found that by adding a stabilizer to the antifouling liquid, the film-forming speed of the antifouling liquid on the surface of the substrate can be regulated, and the storage stability of the antifouling liquid with different pH values ​​is different. When the pH is between 7 and 9 When the concentrati...

Embodiment 1

[0041] This embodiment provides a long-lasting antifouling liquid. According to parts by weight, the raw materials of the antifouling liquid include 20 parts of high hydrogen-containing methyl silicone oil, 5 parts of silicone oil with low hydrogen content, 5 parts of silica sol, and 50 parts of ethyl acetate. Parts, 8 parts of surfactant, tartaric acid; Wherein silica sol is the silica sol that average particle diameter is 13~17nm, the mixture of silica sol that average particle diameter is 26~34nm and the silica sol that average particle diameter is 58~65nm, three The weight ratio of the two is 1:2:1; the surfactant is sodium polyacrylate and diisooctyl sodium sulfosuccinate, and the weight ratio of the two is 3:1.

[0042] This embodiment also provides the preparation method of the anti-fouling liquid, which includes the following steps: adding methylated high-hydrogen-containing silicone oil, low-hydrogen-containing silicone oil, and silica sol to the solvent in sequence un...

Embodiment 2

[0044] This embodiment provides a long-lasting antifouling liquid. According to parts by weight, the raw materials of the antifouling liquid include 35 parts of high hydrogen-containing methyl silicone oil, 10 parts of silicone oil with low hydrogen content, 12 parts of silica sol, and 70 parts of ethyl acetate. Parts, 22 parts of surfactant, tartaric acid; Wherein silica sol is the silica sol that average particle diameter is 13~17nm, the mixture of silica sol that average particle diameter is 26~34nm and the silica sol that average particle diameter is 58~65nm, three The weight ratio of the two is 1:2:1; the surfactant is sodium polyacrylate and diisooctyl sodium sulfosuccinate, and the weight ratio of the two is 3:1.

[0045] This embodiment also provides the preparation method of the anti-fouling liquid, which includes the following steps: adding methylated high-hydrogen-containing silicone oil, low-hydrogen-containing silicone oil, and silica sol to the solvent in sequence...

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Abstract

The invention relates to the technical field of antifouling, in particular to a durable antifouling liquid and a preparation method thereof. The durable antifouling liquid comprises following raw materials in parts by weight: 20-35 parts of methyl silicone oil with a high hydrogen content, 5-10 parts of silicone oil with a low hydrogen content, 5-12 parts of silica sol, 50-70 parts of a solvent and 5-25 parts of an auxiliary agent, wherein the silica sol is a mixture of silica sol with an average particle size of 13-17nm, silica sol with an average particle size of 26-34nm and silica sol withan average particle size of 58-65nm; the auxiliary agent at least comprises two specific surfactants and stabilities; in the preparation process, a stabilizer is added to adjust the pH value of a final product, the pH value is in a range of 7-9, the prepared antifouling liquid is used for a surface treatment of ceramic products, and a generated antifouling coating is smooth and flat in appearance,free of sagging and cracking, high in strength, good and durable in antifouling effect and good in storage stability.

Description

technical field [0001] The invention relates to the field of antifouling technology, in particular to a durable antifouling liquid and a preparation method thereof. Background technique [0002] The appearance of ceramic products is clean and beautiful. They are often used on the surface of floors, walls, dining tables, desks, etc., but their biggest disadvantage is that their anti-fouling ability is extremely poor. It is because some ceramic products will have many micropores or fine lines on the surface during the firing process, which are more likely to absorb pollutants. Many manufacturers will use antifouling agents to treat the surface of ceramic products before leaving the factory. [0003] At present, in order to make the antifouling effect more durable, the antifouling agents on the market usually use a variety of silicones and compound corresponding silane coupling agents. additives. But the problem is that when multiple silicones are used in combination, due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/05C09D5/16C09D7/61C09D7/63C09D7/65
CPCC09D183/04C09D5/1687C09D5/1675C08L2205/025C08L2205/03C08K2201/014C08K2201/003C08L83/04C08L33/02C08K3/36C08K5/42
Inventor 方伟洪程文静刘锦凡胡艺伦朱恩堂罗学新刘纪文
Owner HT FINE CHEM CO LTD
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