Aqueous nano zirconia particle paint and method for preparing paint film thereof

A technology of nano-zirconia and particles, applied in the direction of coating, etc., can solve the problems of mismatched surface properties, poor transparency, and low ZrO2 content, and achieve the effects of good environmental protection, good transparency, and outstanding mechanical properties

Inactive Publication Date: 2011-04-27
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the existing ZrO-containing 2 The coatings of nanoparticles all contain organic resins, although organic resins can be used as nano ZrO 2 High-efficiency binder for particle coatings, but due to reasons such as molecular weight or surface properties mismatch, nano-ZrO 2 The particles are prone to phase separation in the organic resin coating, resulting in ZrO 2 Disadvantages such as low content and poor transparency

Method used

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  • Aqueous nano zirconia particle paint and method for preparing paint film thereof
  • Aqueous nano zirconia particle paint and method for preparing paint film thereof
  • Aqueous nano zirconia particle paint and method for preparing paint film thereof

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Effect test

Embodiment 1

[0025] 0.1g nanometer ZrO 2 Particles, 0.03g of γ-aminopropyltriethoxysilane, and 10g of tetrahydrofuran are added to the reactor, ultrasonicated for 5-50 minutes, and reacted at 50-80°C for 12-24 hours to obtain a cloudy solution. The turbid liquid is washed, centrifuged, and separated, then transferred to an aqueous solution with a pH value of 13.5, and a transparent dispersion can be obtained after ultrasonication for 5-30 minutes. Nano ZrO 2 The amount of organic amino groups grafted on the particle surface is 125mg / g-ZrO 2, further add 1,4-butanediol diglycidyl ether 11.5mg, wetting agent FOS-110 aqueous solution (concentration is 5wt%) 0.1g, obtain aqueous nanometer ZrO 2 coating. Apply the above coating on the polycarbonate substrate by dip coating, the dip coating rate is 50mm / min, dry at room temperature for 0.5-2.0 hours and then heat at 120°C for 1 hour to obtain cross-linked and cured nano-ZrO 2 granular film. The coating properties are shown in Table 1.

Embodiment 2

[0027] 0.1g nanometer ZrO 2 Particles, 0.04g of N-β-aminoethyl-γ-aminopropyltriethoxysilane, and 10g of tetrahydrofuran are added to the reactor, ultrasonicated for 5-50 minutes, and reacted at 50-80°C for 12-24 hours to obtain a cloudy solution. After washing, centrifuging and separating the turbid solution, transfer it to a strong alkaline aqueous solution with a pH value of 13.5, and obtain a transparent dispersion after ultrasonication for 5-30 minutes. Nano ZrO 2 The amount of organic amino groups grafted on the particle surface is 162mg / g-ZrO 2 , further add 1,6-hexanediol diglycidyl ether 25.2mg, add wetting agent FOS-110 aqueous solution (concentration is 5wt%) 0.1g, obtain aqueous nanometer ZrO 2 coating. Apply the above coating on the polycarbonate substrate by dip coating, the dip coating rate is 100mm / min, dry at room temperature for 0.5-2.0 hours, and then heat at 110°C for 2 hours to obtain nano-ZrO 2 granular film. The coating properties are shown in Table 1...

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Abstract

The invention relates to the field of chemical industry and new materials, in particular to aqueous nano zirconia particle paint and a method for preparing a paint film thereof. A preparation method of the aqueous nano zirconia particle paint comprises the steps of: with nano zirconia crystal particles as raw materials, modifying organic amino groups on nano particles with an amino silane coupling agent, dispersing the modified nano zirconia crystal particles in water, adjusting a pH value to acquire a transparent nano zirconia aqueous dispersion, and further adding aqueous double-functional groups or multi-functional groups of epoxy compound and a wetting agent to obtain the aqueous nano zirconia particle paint. The method for preparing the paint film of the aqueous nano zirconia particle paint comprises the steps of: coating the aqueous nano zirconia particle paint on the surface of a plastic substrate through dip coating, spin coating and spray finishing, and thermally treating at lower temperature to obtain an organic molecule-bridged nano zirconia particle film, wherein the thickness of the paint film can be adjusted through coating multiple times. The aqueous nano zirconia particle paint in the invention has simple and convenient preparation methods and good environmental-protection performance, and the acquired paint film has high zirconia content, good transparency, high refractive index and outstanding mechanical property and can be used as an optical paint film and a scratch-resistant paint film on the surface of the transparent plastic substrate.

Description

technical field [0001] The invention relates to the fields of chemical industry and new materials, in particular to a water-based nano-zirconia particle coating and a preparation method of the coating film. Background technique [0002] Zirconia (ZrO 2 ) has the advantages of high hardness, high refractive index, good thermal stability, chemical inertness, etc., and is an ideal coating material. Inorganic zirconia coatings can be prepared by gas phase methods including chemical vapor deposition, magnetron sputtering, atomic layer deposition, etc., and can also be prepared by liquid phase methods such as sol-gel method, chemical bath deposition, continuous ion layer adsorption and reaction, inorganic Although zirconia coating has the advantages of compactness, uniformity, high refractive index and hardness, it also has disadvantages such as high requirements for preparation equipment, high temperature treatment or poor adhesion, which limits its application on the surface of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/00C08J7/06
Inventor 周树学罗开清武利民游波
Owner FUDAN UNIV
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