Rare-earth super-hydrophobic coating capable of keeping fluorescence stability in aqueous solution and preparation method of rare-earth super-hydrophobic coating

A super-hydrophobic coating and aqueous solution technology, which is applied in coatings, luminescent coatings, chemical instruments and methods, etc., can solve the problems of limited scope of application and cumbersome process, and achieve simple preparation methods, simple processes, and suitable for large-scale production Effect

Active Publication Date: 2016-07-20
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing preparation methods, post-treatment is required to modify low surface energy substances, or polymerization is carried out on the substrate, the process is cumbersome and the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Get particle diameter to be 100nm, shell layer contains the core-shell nanoparticle of polyacrylic acid to disperse in ethanol solution and obtain the solution that solid content is 1%, then take a certain amount of this solution so that the quality that it contains latex particle is 0.02g, its And 0.005g acetylacetone, 0.005g o-phenanthroline, 0.01g europium trichloride magnetically stirred for 3 hours to obtain a mixture. Take a certain amount of the mixture, and disperse the mixture and polytetrafluoroethylene powder with a particle size of 8 μm at a solid mass ratio of 1:5, and then cast a coating film on a glass sheet. The contact angle was measured after the solvent was volatilized, and the coating was immersed in an aqueous solution of sodium chloride to measure the change of the contact angle for 12 hours, while observing the fluorescence with an ultraviolet photometer.

[0021] The contact angles of the coatings are all greater than 150°, and they still have fl...

Embodiment 2

[0023] Take the core-shell nanoparticles whose particle size is 100nm and whose shell layer contains polyacrylic acid, and disperse them in methanol solution to obtain a solution with a solid content of 3%, then take a certain amount of this solution so that the quality of the latex particles contained in it is 0.01g. And 0.005g acetylacetone, 0.02g isophthalic acid, 0.01g terbium nitrate magnetically stirred for 3 hours to obtain a mixture. Take a certain amount of the mixture, disperse the mixture and polytetrafluoroethylene microspheres with a particle size of 5 μm according to the solid mass ratio of 1:10, and then cast a coating film on the glass sheet. After the solvent evaporates, the contact angle is measured, and the coating is soaked in an aqueous solution of sodium nitrate, and the change of the contact angle is measured for 24 hours, and the fluorescence is observed with an ultraviolet photometer at the same time.

[0024] The contact angles of the coatings are all...

Embodiment 3

[0026] The particle diameter is 100nm, and the core-shell nanoparticles containing polyacrylic acid in the shell are dispersed in the chlorinated hydrocarbon solution to obtain a solution with a solid content of 2%, and then a certain amount of this solution is taken so that the quality of the latex particles contained in it is 0.04g, It was magnetically stirred with 0.02 g of salicylic acid, 0.02 g of o-phenanthroline, and 0.03 g of holmium nitrate for 3 hours to obtain a mixture. Take a certain amount of the mixture, disperse the mixture and polyvinylidene fluoride microspheres with a particle size of 10 μm according to the solid mass ratio of 1:10, and then cast a coating film on a glass sheet. The contact angle was measured after the solvent was volatilized, and the coating was soaked in pure aqueous solution to measure the change of the contact angle for 48 hours, while observing the fluorescence with an ultraviolet photometer.

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Abstract

The invention discloses rare-earth super-hydrophobic coating capable of keeping fluorescence stability in an aqueous solution and a preparation method of the rare-earth super-hydrophobic coating. The preparation method includes the steps of firstly, using a seeded emulsion polymerization method to prepare core-shell nanoparticles with carboxylic on the surface; secondly, dispersing the core-shell nanoparticles in an organic solvent, and then allowing the dispersed core-shell nanoparticles to have complexing reaction with small-molecule ligands and a rare-earth compound to obtain complexing composite nanoparticles; thirdly, evenly dispersing the obtained complexing composite nanoparticles and low-surface-energy polymer particles, then coating on a certain matrix to obtain the super-hydrophobic coating with the micro-nano structure after the solvent volatilizes. The preparation method has the advantages that the rare-earth super-hydrophobic coating prepared by the method can solve the problem that rare-earth materials are prone to quenching when meeting water, the fluorescence strength of the rare-earth super-hydrophobic coating in purified water or the aqueous solution can be kept unchanged, the method is simple, economical and environmentally friendly, and the rare-earth super-hydrophobic coating is promising in application prospect in fields such as fluorescent display equipment and solar cells.

Description

technical field [0001] The invention belongs to the field of rare earth fluorescent and super-hydrophobic coatings, in particular to a rare-earth super-hydrophobic coating with stable fluorescence in aqueous solution and a preparation method thereof. Background technique [0002] Through the study of lotus leaves and rice in nature, it is found that the organic combination of micron and nanostructures on the surface results in a superhydrophobic surface with a contact angle of more than 150° and a rolling angle of less than 10°, thus endowing the superhydrophobic surface with a natural The clean performance and superhydrophobic surface have great prospects in microfluidic systems and biocompatibility due to the special wettability of the surface. [0003] Rare earth materials have excellent optical, electrical and magnetic properties due to their special 4f electronic transitions. However, because rare earth materials are generally inorganic salts, they are unstable in wate...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D127/16C09D183/04C09D127/12C09D7/12C09D5/22C09K11/06
CPCC09D5/22C09D7/61C09D127/12C09D127/16C09D127/18C09D183/04C09K11/06C09K2211/182C08L101/08C08K3/16C08K3/28
Inventor 王忠刚叶维维王泽锋骆新然
Owner DALIAN UNIV OF TECH
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