Ultraviolet light polymerization super-hydrophobic transparent wear-resistant coating and preparation method thereof

A technology of wear-resistant coating and ultraviolet light, which is applied in coatings, devices for coating liquid on the surface, pre-treatment of surfaces, etc., can solve the problem that the effective hardness of the coating cannot be guaranteed, the coating strength is not high enough, and the coating business is limited problems such as the application of chemicalization, to achieve the effect of ensuring optical transparency, improving wear resistance and hardness, and broad market prospects

Active Publication Date: 2017-10-17
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent document with publication number CN103587185A discloses a superhydrophobic coating prepared by mixing nanoparticles and resin. Although the superhydrophobic coating has a certain scratch resistance, it cannot achieve the light transmission of the coating.
The patent document with the publication number CN 104987520 A discloses an optically transparent superhydrophobic coating suitable for glass substrates, but it cannot guarantee the effective hardness of the coating on the glass, which limits the commercial application of the coating
At present, the surface hydrophobic technology of materials has not yet been applied on a large scale. The reason is that there are a large number of low surface energy nanoparticles in the superhydrophobic coating, which cannot chemically react with the overall coating, resulting in the superhydrophobic effect of the coating at the same time. The strength is not high enough, and the coating materials usually used in glass substrates have higher requirements for light transmission

Method used

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  • Ultraviolet light polymerization super-hydrophobic transparent wear-resistant coating and preparation method thereof
  • Ultraviolet light polymerization super-hydrophobic transparent wear-resistant coating and preparation method thereof
  • Ultraviolet light polymerization super-hydrophobic transparent wear-resistant coating and preparation method thereof

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preparation example Construction

[0018] The invention provides a method for preparing an ultraviolet light-cured superhydrophobic transparent wear-resistant coating, the specific steps are as follows:

[0019] In the first step, the transparent substrate is activated and pretreated.

[0020] The transparent substrate used in the present invention is not particularly limited, and can be selected from existing materials with optically transparent properties (light transmittance greater than 80%). The transparent substrate used in the present invention can be glass, transparent ceramics, ITO (Indium Tin Oxide Semiconductor Transparent Conductive Film), polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate Ethyl acetate, polyethylene, polypropylene, cellophane, diacetyl cellulose, triacetyl cellulose, acetyl cellulose butyrate, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, ethylene-vinyl acetate copolymer , polystyrene, polycarbonate, polymethylpentene, polysulfone...

Embodiment 1

[0046] Soak the glass substrate in piranha washing solution to remove the residual organic solvent on the surface, and dry it for future use. Take 10 parts of silane coupling agent and add it to 100 parts of methanol, soak the cleaned glass substrate and keep it at room temperature for 10 hours, and the alkyl group activates the surface structure of the glass substrate.

[0047] Take 5 parts of gas-phase nano-alumina, whose particle size distribution is 50-80nm, and add it to 100 parts of methanol; in addition, adjust the pH value of the solution to 3-4, stir and react for 12 hours under the condition of 30-45°C water bath, and finally obtain active nanoparticles of the dispersion.

[0048] Take 50 parts of the dispersion, add 0.5 parts of 2-perfluorooctylethyl methacrylate, 1.5 parts of trimethylolpropane triacrylate, and 0.25 parts of 1-hydroxycyclohexyl phenyl ketone, stir and mix evenly, and prepare Get the coating solution.

[0049] Spray the prepared coating solution o...

Embodiment 2

[0051] The glass substrate is cleaned and dried with ethanol solvent, and then placed in a plasma cleaning machine for plasma pretreatment of the glass surface structure. Add 10 parts of silane coupling agent to 100 parts of ethanol, soak the pretreated glass sheet at room temperature for 10 hours, and activate the surface structure of the glass sheet with the alkyl group.

[0052] Take 5 parts of nano-ZnO powder, the particle size distribution is 20-40nm, add it to 100 parts of n-propanol, and adjust the pH value of the solution to 3-4, stir and react for 24 hours in a water bath at 40-50°C, and finally obtain active nano-ZnO powder. dispersion of particles.

[0053] Take 50 parts of the dispersion liquid, add 0.5 parts of perfluorobutyl ethyl acrylate, 1.5 parts of methyl methacrylate, 0.25 parts of 2-hydroxy-2-methyl-1-phenylacetone, stir and mix evenly to obtain the coating cloth liquid.

[0054] Spray the prepared coating solution on the alkylated transparent glass, dry...

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Abstract

The invention discloses an ultraviolet light polymerization super-hydrophobic transparent wear-resistant coating and a preparation method thereof, and belongs to the technical field of the photocureable coating. The preparation method comprises the following steps: activating and pre-processing a transparent base material, and preparing dispersion liquid containing active nano-particles; and adding active fluorine monomers, an active diluent and a light initiator to the dispersion liquid containing the active nano-particles, and uniformly coating on the transparent base material activated and pre-processed in the first step, to obtain the super-hydrophobic transparent wear-resistant coating by the solidification of ultraviolet light energy action. The preparation method has the characteristics of efficiency, extensive adaptability, economies, energy-saving and environment-friendliness. The prepared ultraviolet light polymerization super-hydrophobic transparent wear-resistant coating has the characteristics of surface self-cleaning, surface corrosion prevention, dewatering, antifogging, freeze resistance, and good adhesive force to the base material.

Description

technical field [0001] The invention belongs to the technical field of light-curing coatings, and in particular relates to a high-durability, water-drop-resistant, super-hydrophobic self-cleaning nano-transparent coating suitable for use on glass and a preparation method thereof. Background technique [0002] The first patent for ultraviolet (UV) curing coatings was born in 1947. After more than half a century of development, ultraviolet (UV) curing coatings have become a relatively mature technology, especially with the improvement of people's awareness of environmental protection, production and Researchers are paying more attention to the development and application of UV-curable coatings. In the late 1960s, Bayer developed a new type of environmentally friendly and energy-saving UV-curable coating based on unsaturated resin and benzoin system. In recent years, with people's increasing emphasis on energy utilization and environmental protection, countries all over the wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D7/12B05D1/00B05D3/00B05D3/06C08F222/14C08F220/24C08F220/14C08F2/48
CPCB05D1/00B05D3/002B05D3/067C08F2/48C08F220/14C08F220/24C08F222/1006C08F222/103C09D4/00
Inventor 郑咏梅周蕾李吉彤
Owner BEIHANG UNIV
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