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A kind of fluorosilicone hybrid water-based acrylate emulsion and its preparation method and application

A water-based acrylate and acrylate technology, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve problems such as poor compatibility, opaque coating film, and difficulty in achieving modification effects

Active Publication Date: 2022-04-15
GUANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods of organic fluorine modified acrylate mainly include physical blending modification and copolymerization modification with acrylates. Among them, physical blending modification has the problem of poor compatibility between organic fluorine polymers and water-based acrylate coatings, resulting in opaque coatings. Copolymerization modification with acrylate, the introduction of fluorine-containing groups in the molecule is difficult to migrate to the surface of the surface coating, and it is difficult to achieve the desired modification effect

Method used

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  • A kind of fluorosilicone hybrid water-based acrylate emulsion and its preparation method and application
  • A kind of fluorosilicone hybrid water-based acrylate emulsion and its preparation method and application
  • A kind of fluorosilicone hybrid water-based acrylate emulsion and its preparation method and application

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preparation example Construction

[0068] Table 1. Raw materials for the preparation of fluorosilicone hybrid waterborne acrylate emulsion

[0069]

[0070]

[0071] Table 2. Preparation raw materials of mercaptosilane modified silica sol

[0072]

[0073] Table 3. Raw materials for the preparation of fluorosilicone hybrid waterborne acrylate coatings

[0074]

Embodiment 1

[0076] A kind of fluorosilicone hybridized aqueous acrylate emulsion, its preparation method comprises the steps:

[0077] (1) Preparation of mercaptosilane modified silica sol

[0078] Mix 2g tetraethyl orthosilicate and 30g absolute ethanol and heat to 45°C, then add 0.1g catalyst 37% hydrochloric acid and 3g water, react at 45°C for 6h, then add 20g silica sol, 2g methyltrimethoxy Silane, 4g of dimethyldiethoxysilane, and 5g of mercaptopropyltrimethoxysilane were reacted at 60°C for 10 hours to obtain mercaptosilane-modified silica sol.

[0079] (2) Preparation of fluorosilicone hybrid water-based acrylate emulsion

[0080] 50g of water, 5g of alkylphenol polyoxyethylene ether and 3g of trifluorooctyl (meth)acrylate, 5g of methyl acrylate and 5g of butyl acrylate, 10g of (meth)methyl acrylate and 5g of (meth) Add butyl acrylate, 6g of acrylic acid to 3g of mercaptosilane-modified silica sol prepared in step (1), stir and mix evenly, then add 0.5g of initiator, react at 40...

Embodiment 2

[0084] A kind of fluorosilicone hybridized aqueous acrylate emulsion, its preparation method comprises the steps:

[0085] (1) Preparation of mercaptosilane modified silica sol

[0086] Mix 3g of tetraethyl orthosilicate and 25g of absolute ethanol and heat to 60°C, then add 0.3g of 10% sulfuric acid and 1g of water, react at 60°C for 3h, then add 10g of silica sol, 5g of methyltrimethoxysilane , 4g of mercaptopropyltrimethoxysilane and 4g of mercaptopropyltriethoxysilane were reacted at 50°C for 20h to obtain mercaptosilane-modified silica sol.

[0087] (2) Preparation of fluorosilicone hybrid water-based acrylate emulsion

[0088] With 30g water, 6g alkylphenol polyoxyethylene ether and 2g (meth) hexafluorobutyl acrylate, 4g methyl acrylate, 5g ethyl acrylate, 5g isobutyl acrylate, 5g (meth) methyl acrylate, 5g (meth)acrylic acid isobutyl ester, 10g acrylic acid joins in the prepared mercaptosilane modified silica sol in 8g step (1), stirs and mixes evenly, then adds 0.5g ...

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Abstract

The invention discloses a fluorine-silicon hybrid water-based acrylate emulsion and its preparation method and application. The fluorine-silicon hybrid water-based acrylate emulsion has both fluorine-containing segments and hybrid silica sol groups. The preparation method is as follows: Mix water, emulsifier, fluorine-containing acrylate monomer, acrylate monomer, (meth)acrylate monomer, acrylic acid and mercaptosilane-modified silica sol, add initiator, and react to obtain fluorine-silicon hybrid water-based acrylate emulsion . The fluorosilicon hybridized water-based acrylate emulsion can be used to make fluorosilicon hybridized water-based acrylate paint, and the obtained paint has excellent antifouling performance and abrasion resistance.

Description

technical field [0001] The invention belongs to the technical field of water-based coatings, and in particular relates to a fluorosilicon hybrid water-based acrylate emulsion and a preparation method and application thereof. Background technique [0002] With the development of industry and the improvement of people's economic and living standards, water-based coatings have become the first choice in the field of architectural coatings instead of solvent-based coatings. At present, the types of water-based coatings used in architectural coatings mainly include water-based acrylate coatings, water-based polyurethane coatings, and water-based silicone-acrylic emulsion coatings. Among them, water-based acrylic coatings have the advantages of low price, safety and environmental protection, good flexibility, long-lasting weather resistance, and strong adhesion, and have important applications in wood paint, architectural coatings, leather coatings and other fields. However, wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/22C08F220/18C08F220/06C08F2/38C09D133/04C09D133/12C09D133/02C09D133/08C09D133/10C09D5/16C09D7/62C09D7/61
CPCC08F220/14C08F220/06C08F220/1804C08F2/38C09D133/04C09D133/16C09D5/1668C09D5/1687C09D5/18C08K2003/2241C08K2003/2296C08K2201/014C08K2003/265C08L2205/03C08L2201/08C08F220/22C08F220/1802C08L33/16C08K9/06C08K3/36C08K3/22C08K13/06C08L33/02C08K3/26C08L33/04C08K3/34
Inventor 王政芳李善吉
Owner GUANGZHOU INST OF TECH