Fluorin-containing acrylic resin having ultra-low surface energy and preparation method and application in paint thereof

A technology of acrylic resin and acrylic acid, applied in the field of fluorine-containing acrylic resin and its preparation, to achieve the effects of improving storage stability, prolonging aging and enhancing compatibility

Inactive Publication Date: 2008-04-09
MARINE CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the currently reported technology, the surface energy of fluorinated acrylic resin varnish is generally greater than 14mN / m (that is, the water contact angle can reach up to about 115°), which cannot meet the needs in some occasions that require high hydrophobicity.

Method used

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  • Fluorin-containing acrylic resin having ultra-low surface energy and preparation method and application in paint thereof
  • Fluorin-containing acrylic resin having ultra-low surface energy and preparation method and application in paint thereof
  • Fluorin-containing acrylic resin having ultra-low surface energy and preparation method and application in paint thereof

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preparation example Construction

[0037] In order to solve the second technical problem above, the present invention provides a method for preparing a fluorine-containing acrylic resin with ultra-low surface energy, the steps of which are as follows: adding the monomer and initiator in the above formula into a solvent to undergo free radical polymerization, A fluorinated acrylic resin solution is generated; then a modifier is added to the resin solution for graft polymerization.

[0038] A further improved technical solution, a method for preparing a fluorine-containing acrylic resin with ultra-low surface energy, the steps are as follows: add the solvent into the reactor, start stirring and heat to 75-85°C or 95-105°C , filled with nitrogen protection at the same time; acrylate or methacrylate hard monomer, acrylate or methacrylate soft monomer, hydroxy acrylate or methacrylate hydroxy ester, fluorine-containing acrylate monomer, acrylic or methyl Acrylic acid is mixed with the initiator accounting for 75-85%...

Embodiment 1

[0040] A kind of fluorine-containing acrylic resin with ultra-low surface energy of the present invention, its structural formula is shown as follows:

[0041]

[0042] The fluorine-containing acrylic resin with ultra-low surface energy of the above structural formula is made of the following raw materials in weight percentage:

[0043] Methyl acrylate 20%;

[0044] Butyl Acrylate 15%;

[0045] β-Hydroxypropyl Acrylate 5%;

[0046] 3-fluoroethyl methacrylate 8.5%;

[0047] Acrylic acid 0.5%;

[0048] Modifier 0.5%;

[0049] Xylene 25%;

[0050] Butyl acetate 25%;

[0051] Azobisisobutyronitrile 0.5%.

[0052] The modifier is a perfluoroalkyl compound containing active end groups, and this perfluoroalkyl compound has the following structure:

[0053]

[0054] The modifier is n=6 in the formula.

[0055] A preparation method of a fluorine-containing acrylic resin with ultra-low surface energy of the present invention, the steps are as follows: add xylene and butyl a...

Embodiment 2

[0059] A kind of fluorine-containing acrylic resin with ultra-low surface energy of the present invention is made of the raw materials of following weight percent:

[0060] Methyl methacrylate 22%;

[0061] Ethyl Acrylate 14%;

[0062] β-Hydroxyethyl Acrylate 10%;

[0063] 4-Fluorodecyl Methacrylate 10.5%;

[0064] Methacrylic acid 1%;

[0065] Modifier 1%;

[0066] MEK 40%:

[0067] Benzoyl Peroxide 1.5%.

[0068] The modifier is a perfluoroalkyl compound containing active end groups, and this perfluoroalkyl compound has the following structure:

[0069]

[0070] The modifier is n=8 in the formula.

[0071] A kind of preparation method of the fluorine-containing acrylic resin with ultra-low surface energy of the present invention, its steps are as follows:

[0072] Add methyl ethyl ketone into the reactor, start stirring and heat to 105°C, and fill with nitrogen protection at the same time; methyl methacrylate, ethyl acrylate, β-hydroxyethyl acrylate, 4-fluorodecyl...

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Abstract

A fluorine-containing acrylic resin with the ultra low surface energy is prepared by the raw materials with the following weight percentages: 20 to 30 percent of acrylate or methyl acrylate hard monomer; 10 to 20 percent of acrylate or methyl acrylate soft monomer; 5 to 10 percent of acrylic hydroxy ester or methyl acrylic hydroxy ester; 5 to 12 percent of fluorine-containing acrylate monomer; 0.5 to 1 percent of acrylic acid or methyl acrylic acid; 0.5 to 1 percent of modifier; 40 to 50 percent of solvent; and 0.5 to 1.5 percent of initiator. The present invention makes use of a Perfluoro alkyl compound containing an active terminal group as the modifier and carries out the reaction with a polymer main chain by graft polymerization, thus greatly improving the storage stability of the fluorocarbon surfactant, prolonging the time effect of the nature of the resin low surface energy and enhancing the compatibility of the fluorocarbon surfactant and the acrylic resin, the resin varnish can have the ultra low surface energy, and the water contact angle can achieve more than 120 degrees.

Description

technical field [0001] The utility model relates to a resin, its preparation method and its application in paint, in particular to a fluorine-containing acrylic resin with ultra-low surface energy, its preparation method and its application in paint. Background technique [0002] At present, in the field of low surface energy resins, fluorocarbon resins prepared from fluorinated vinyl monomers and fluorinated acrylic resins are the most active researches. Hydrophobic coatings prepared with low surface energy resins have properties such as water repellency, self-cleaning, and drag reduction, and have important potential applications in building exterior wall coatings, antifouling coatings, anti-fog and anti-icing coatings, etc. It is generally believed that the surface energy of the coating is lower than 25mN / m, that is, when the contact angle between the coating and the liquid is greater than 98°, it has excellent antifouling and desorption cleaning effects. The first thing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/22C09D133/14
Inventor 王贤明张燕杨凯郭莉莎
Owner MARINE CHEM RES INST CO LTD
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