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Fluorine-silicon modified acrylic resin as well as preparation method and application thereof

A technology of acrylic resin and fluorosilicone modification, which can be used in coatings, biocide-containing paints, antifouling/underwater coatings, etc., and can solve the problems of insufficient hydrophobic and oleophobic properties of resins

Active Publication Date: 2020-07-10
INST OF CHEM ENG GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organosiloxane monomers mentioned in this scheme are methyltrimethoxysilane, methyltriethoxysilane, diphenyldimethoxysilane, vinyltrimethoxysilane, vinyltriethoxy One of silane, γ-methacryloxytrimethoxysilane and γ-methacryloxytriethoxysilane or the above ingredients are mixed in any proportion, and the organosiloxane chain segment is generally too short Lead to problems such as insufficient hydrophobic and oleophobic properties of the resin
[0009] At present, how to organically combine long-chain alkyl groups with hydrophobic and slippery functions, organic fluorine and silicone through molecular structure design, through the synergistic effect of the three, can significantly improve the hydrophobic, oleophobic, and anti-icing effects of acrylic resins. The impact resistance and self-healing function of acrylic resins are improved by acrylic monomers of ring structural units, and high-solid and low-viscosity acrylic resins are obtained through special initiators and preparation processes, which have not been reported yet.

Method used

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  • Fluorine-silicon modified acrylic resin as well as preparation method and application thereof
  • Fluorine-silicon modified acrylic resin as well as preparation method and application thereof
  • Fluorine-silicon modified acrylic resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A fluorosilicone modified acrylic resin is composed of the following raw materials in mass percentage: 10% methyl methacrylate, 3% dicyclopentadienyl methacrylate, 5% hydroxyethyl methacrylate caprolactone, methacrylic acid 5% stearyl ester, 10% trifluoroethyl methacrylate, 5% heptadecanyl methacrylate, 2% acrylate-based monoblocked silicone oil (Mn=4000), 2% allyl double-blocked silicone oil ( Mn=3000) 10%, γ-methacryloxypropyltrimethoxysilane 0.5%, methacrylic acid 1%, methacrylate-2-hydroxyethyl 2%, acrylate-4-hydroxybutyl 3 %, glycidyl methacrylate 1%, trimethylolpropane trimethacrylate 1%, di-tert-amyl peroxide 1%, n-dodecyl mercaptan 0.5%, xylene 40%.

[0069] The fluorosilicon-modified acrylic resin of this example is prepared according to the following steps:

[0070] Add 40 parts of xylene, 20 parts of acrylate-based mono-capped silicone oil (Mn=4000) and 2 parts of di-tert-amyl peroxide into a four-necked flask equipped with a stirrer, a condenser, and a ther...

Embodiment 2

[0073] A fluorosilicone modified acrylic resin is composed of the following raw materials in mass percentage: 15% methyl methacrylate, 10% dicyclopentadienyl methacrylate, 5% hydroxyethyl methacrylate caprolactone, methacrylic acid 2% stearyl ester, 4% tetrafluoropropyl methacrylate, 1% heptadecanyl acrylate, 5% acrylate-based monoblocked silicone oil (Mn=2000), 5% allyl double-blocked silicone oil (Mn= 10000) 8%, γ-methacryloxypropyltriethoxysilane 2.5%, methacrylic acid 0.5%, methacrylate-2-hydroxyethyl 3%, acrylate-4-hydroxybutyl 2% , glycidyl methacrylate 0.5%, trimethylolpropane trimethacrylate 2%, di-tert-butyl peroxide 1%, cyclohexyl mercaptan 0.3%, xylene 20%, methyl isobutyl ketone 18.2%.

[0074] The fluorosilicon-modified acrylic resin of this example is prepared according to the following steps:

[0075] Add 38.2 parts of mixed solvents, 50 parts of acrylate-based mono-capped silicone oil (Mn=2000) and 2 parts of di-tert-butyl peroxide into a four-necked flask eq...

Embodiment 3

[0078] A fluorosilicon modified acrylic resin is composed of the following raw materials in mass percentage: 10% methyl methacrylate, 8% dicyclopentadienyl methacrylate, 4% hydroxyethyl methacrylate caprolactone, methacrylic acid 3% stearyl ester, 5% trifluoroethyl acrylate, 3% heptadecanyl methacrylate, 10% acrylate-based monoblocked silicone oil (Mn=300), 10% allyl double-blocked silicone oil (Mn= 2000) 2%, γ-methacrylic acid oxypropylmethyldimethoxysilane 1%, methacrylic acid 2%, methacrylate-2-hydroxyethyl 4%, acrylate-4-hydroxybutyl 1% , Glycidyl methacrylate 1.5%, trimethylolpropane trimethacrylate 1.5%, di-tert-amyl peroxide 2%, n-octyl mercaptan 0.3%, propylene glycol methyl ether acetate 41.7%.

[0079] The fluorosilicon-modified acrylic resin of this example is prepared according to the following steps:

[0080]Add 41.7 parts of propylene glycol methyl ether acetate, 100 parts of acrylate-based double-capped silicone oil (Mn=200) and 4 parts of di-tert-amyl peroxide...

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Abstract

The invention discloses fluorosilicone modified acrylic resin as well as a preparation method and an application thereof. The fluorine-silicon modified acrylic resin is prepared from the following components: methacrylate monomers, fluorine-containing acrylate monomers, acrylate-based silicone oil, allyl silicone oil, a polymerized active silane coupling agent, methacrylic acid, hydroxyl-containing active crosslinking monomers, glycidyl methacrylate, trimethylolpropane trimethacrylate, an initiator, a chain transfer agent and a solvent. The fluorine-containing acrylate monomer is composed of aC2-C3 short-chain fluorine-containing alkyl acrylate monomer and a C10-C12 long-chain fluorine-containing alkyl acrylate monomer. The fluorine-silicon modified acrylic resin prepared by the inventionhas the characteristic of high low viscosity, is convenient to construct and use, and reduces the generation of VOC. The coating prepared from the modified acrylic resin has the characteristics of high impact-resistant self-repairing function, icing prevention, low surface energy, hydrophobicity, oleophobicity, stain resistance, high and low temperature resistance and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a fluorosilicon-modified acrylic resin and its preparation method and application. Background technique [0002] Acrylic resin has excellent weather resistance, gloss retention, corrosion resistance, adhesion, simple synthesis process, and low price. It is widely used in automobiles, household appliances, electrical appliances, machinery, construction and other fields. However, due to the influence of the chain segment characteristics of acrylic polymers, its water resistance, solvent resistance, poor high and low temperature resistance, and high surface energy of paint films are very obvious, which limits the use of acrylic resins in high-end functional coatings. For this reason, modified acrylic resins have developed rapidly in recent years, among which fluorosilicone modification is particularly prominent. [0003] Fluorine is the most electronegative element in the...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F220/14C08F220/40C08F220/20C08F220/18C08F220/24C08F230/08C08F220/06C08F220/32C08F222/14C09D175/04C09D5/16
CPCC08F290/068C09D175/04C09D5/1662C08F220/14C08F220/40C08F220/20C08F220/24C08F230/08C08F220/06
Inventor 余龙飞陈佳志麦裕良郑小珊李欢玲
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
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