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A kind of fluorine-containing water-based self-layering paint and preparation method thereof

A water-based coating and self-layering technology, which is applied in antifouling/underwater coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problem of surface slump, surface water repellency, oil repellency and dirt repellency. , poor coating stability and other issues, to achieve the effects of low cost, excellent water repellency, and excellent environmental protection performance

Active Publication Date: 2021-04-27
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in practical application, it is found that the self-layering coating has poor stability, and the movement of the fluorine-containing segment on the surface often causes the surface layer to slump, making the surface layer's water repellency, oil repellency and dirt repellency worse, and the slumped fluorine-containing The chain segment will also affect the adhesion of the underlying fluorine-free resin, making the adhesion of the entire coating on the substrate worse with time, which in turn makes the application effect worse, making it difficult to meet actual needs

Method used

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  • A kind of fluorine-containing water-based self-layering paint and preparation method thereof
  • A kind of fluorine-containing water-based self-layering paint and preparation method thereof

Examples

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Embodiment 1

[0029] This embodiment provides a method for preparing a fluorine-containing waterborne acrylate low surface energy self-layering coating that can be used on plastic surfaces. The specific preparation method includes the following steps:

[0030] (1) In a stirred container, add 0.2kg of wetting agent (TRITON), 0.2kg of dispersant (Flowen D-90) and 0.2kg of defoamer (024) into 10.0kg of water and film-forming aid ( Propylene glycol butyl ether) in the aqueous medium that 8.0kg forms, stirred 30 minutes;

[0031] (2) Then add 10.0 kg of fluorine-containing water-based resin with umbrella structure and 10.0 kg of water-based acrylate resin containing coupling agent (KH550) to the above mixture, and stir for 40 minutes;

[0032] (3) Then add 0.2kg of thickener (sodium polyacrylate), 0.1kg of preservative (PT), 0.2kg of antifungal agent (sodium pentachlorophenate) and 0.5g of water-based blocked isocyanate, and stir for 20 minutes;

[0033] (4) Adjust the pH value to prepare a wat...

Embodiment 2

[0035] The present embodiment provides a kind of preparation method that can be used for the water-based fluorine-containing polyurethane low surface energy self-layering paint of wooden surface, and specific preparation method comprises the following steps:

[0036](1) In a stirred container, add 0.2kg of wetting agent (TRITON), 0.2kg of dispersant (Flowen D-90) and 0.5kg of defoamer (JC-1) into 10.0kg of water, film-forming aid Agent (dipropylene glycol butyl ether) 6.0kg is added in the aqueous medium of composition, stirs 30 minutes;

[0037] (2) Then 8.0 kg of fluorine-containing water-based resin with umbrella structure and 15.0 kg of water-based polyurethane resin containing coupling agent (KH570) were added to the above mixture, and stirred for 60 minutes;

[0038] (3) Then add thickener (polyvinylpyrrolidone) 0.2kg, preservative (MB-11) 0.1kg, antifungal agent (METATIN55-21) 0.5kg and brightener 0.5kg and water-based blocked isocyanate 0.2g, stir 30 minutes;

[0039...

Embodiment 3

[0041] This embodiment provides a kind of preparation method of the water-based fluorine-containing epoxy low surface energy self-layering paint that can be used on the metal surface, and the specific preparation method comprises the following steps:

[0042] (1) In a container with stirring, add 1.0kg of wetting and dispersing agent (Atsurf3222), 0.5kg of defoamer (JC-1), 8.0kg of water, and 6.0kg of film-forming aid (propylene glycol monomethyl ether) In the aqueous medium composed, stir for 30 minutes;

[0043] (2) Then 12.0 kg of fluorine-containing water-based resin with umbrella structure and 10.0 kg of water-based epoxy resin containing coupling agent KH550 are added to the above mixture, and stirred for 40 minutes;

[0044] (3) Then add thickener (polymontmorillonite) 0.3kg, preservative (PT) 0.1kg, antifungal agent (METATIN55-21) 0.4kg, and water-based blocked isocyanate 0.5g, and stir for 30 minutes;

[0045] (4) Adjust the pH value to prepare a water-based fluorine...

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Abstract

The invention provides a fluorine-containing water-based self-layering coating, which comprises the following components in weight percentage: 10%-60% of fluorine-containing water-based resin, 10%-60% of fluorine-free water-based resin, and 0.5%-20% of additives for water-based paint %, film-forming aid 0-30%, deionized water 20%-70%; the fluorine-containing water-based resin is a short-chain fluorine-containing water-based value of an umbrella structure, and the fluorine-free water-based resin is copolymerized with silane coupling agent, the fluorine-containing water-based self-layering coating of the present invention can ensure the stability of the coating after self-layering, thereby ensuring the substrate adhesion and water repellency, oil repellency and antifouling ability of the coating, and the coating of the present invention is water-based, Good environmental performance. The invention also provides a preparation method of the fluorine-containing water-based self-layering paint.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a fluorine-containing water-based self-layering coating and a preparation method thereof. Background technique [0002] With the development of modern industry, more and more substrates have more and more requirements for coatings, which are not limited to aesthetics, but also put forward the protection requirements of surface functionalization, among which the water repellency, oil repellency and Fluorine-containing low surface energy coatings with fouling repellency are one of the most demanding and widely used coatings in the existing coating field. However, due to the low surface energy of fluorine-containing low surface energy coatings, there are problems such as poor spreading and wetting on the surface of the coating substrate, poor adhesion and high cost, which are restricted and affected in the process of popularization and application. [0003] Se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D175/04C09D163/00C09D5/16
CPCC09D5/1662C09D5/1668C09D133/04C09D143/04C09D163/00C09D175/04C08L33/04C08L43/04C08L63/00
Inventor 邓瑾妮郑朝晖潘毅丁小斌
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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