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Anti-fogging anti-reflective coating layer of transparent plastic sheet surface and preparation method thereof

A technology of transparent plastic sheet and coating, which can be applied to devices, coatings, pretreatment surfaces, etc. for applying liquid to the surface.

Inactive Publication Date: 2014-09-17
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the processing of these coatings, a high-temperature calcination method is used to remove the surfactant and cure the coating, which is not suitable for plastic substrates
Mickael Boudot et al. developed a method for curing acidic catalytic coatings with ammonia water vapor, and prepared anti-reflection and anti-reflection coatings on organic substrates (Boudot, M., et al. Chemistry of Materials, 2014, 26, 1822-1833. ), although this method avoids the heat treatment coating, the curing of ammonia water causes the sol chain structure to be destroyed, so that the coating is not resistant to water flushing, and a waterproof film needs to be modified on the coating surface, and the coating is not anti-fog

Method used

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  • Anti-fogging anti-reflective coating layer of transparent plastic sheet surface and preparation method thereof
  • Anti-fogging anti-reflective coating layer of transparent plastic sheet surface and preparation method thereof
  • Anti-fogging anti-reflective coating layer of transparent plastic sheet surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Mix 21-23mL of tetraethyl orthosilicate, 21-23mL of absolute ethanol, 1-2ml of water and 0.5 μL of concentrated hydrochloric acid (the mass concentration of concentrated hydrochloric acid is 37-38%). Stir at 50-70°C (generally, the stirring time is 70-90 minutes) to obtain a silica nanoparticle sol in a chain structure, and the particle size of the silica nanoparticles is 1-3nm; cool to room temperature Finally, add 6 to 8 mL of concentrated hydrochloric acid (the mass concentration of concentrated hydrochloric acid is 37 to 38%), 0.3 to 0.5 mL of water and 45 to 47 mL of anhydrous Ethanol, so that the remaining tetraethyl orthosilicate continues to hydrolyze; stir at room temperature (generally, the stirring time is 10 to 15 minutes), and then age the silicon dioxide nanoparticles in a chain structure at a temperature of 40 to 60°C Sol (general aging time is about 3 hours); then add 104 ~ 106ml absolute ethanol to dilute to obtain reagent; add cetyl trimethyl ammon...

Embodiment 2

[0043] Substantially adopt the same method as Example 1 to prepare the polymethyl methacrylate sheet with high-strength anti-fog and anti-reflection coating on the surface, the difference is that:

[0044] Step (2) Immerse the cleaned polymethyl methacrylate sheet into the dispersion liquid prepared in step (1) at a speed of 50 mm / min and stay for 20 to 80 seconds, then the polymethyl methacrylate sheet Pull out from the dispersion at a speed of 50 mm / min.

[0045] The light transmittance of the polymethyl methacrylate sheet with high-strength anti-fog and anti-reflection coating on the surface obtained above is as follows: figure 1 Line 2 in and Figure 8 As shown in the line 1, it shows that the highest light transmittance of the polymethyl methacrylate sheet with high-strength anti-fog and anti-reflection coating on the surface can reach 100%. The polymethyl methacrylate sheet with high-strength anti-fog and anti-reflection coating on the surface is subjected to the falli...

Embodiment 3

[0047] Substantially adopt the same method as Example 1 to prepare the polymethyl methacrylate sheet with high-strength anti-fog and anti-reflection coating on the surface, the difference is that:

[0048] Step (2) Immerse the cleaned polymethyl methacrylate sheet into the dispersion liquid prepared in step (1) at a speed of 80 mm / min and stay for 20 to 80 seconds, then the polymethyl methacrylate sheet Pull out from the dispersion at a speed of 80mm / min.

[0049] The light transmittance of the polymethyl methacrylate sheet with high-strength anti-fog and anti-reflection coating on the surface obtained above is as follows: figure 1 Shown in line 3.

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Abstract

The invention belongs to the nanomaterial preparation technical field, and particularly relates to a high-strength anti-fogging anti-reflective coating layer of a transparent plastic sheet surface and a preparation method thereof. The high-strength anti-fogging anti-reflective coating layer of the transparent plastic sheet surface is prepared by using an acid catalytic sol-gel method, acid curing and a low-temperature oxygen plasma method; the anti-fogging anti-reflective coating layer is composed of a coating layer with a reticulate structure formed by mutual staggered connection of silica nanoparticles with a chain-type structure, and pores in the reticulate structure are pores formed by removing cetyl trimethyl ammonium bromide micelles used in the preparation method. The high-strength anti-fogging anti-reflective coating layer has the advantages of low reflectivity, high light transmittance, high strength, fog proof and the like.

Description

technical field [0001] The invention belongs to the technical field of nano-material preparation, in particular to a high-strength anti-fog and anti-reflection coating on the surface of a transparent plastic sheet and a preparation method thereof. Background technique [0002] The anti-reflection and anti-reflection coating refers to a film on the surface of the transparent substrate that can reduce light reflection and increase light transmittance, so that the transparent material has higher transparency. To prepare anti-reflection and anti-reflection coatings on the surface of transparent plastics, on the one hand, the coating needs to have a suitable porosity, and on the other hand, it needs to make the coating have higher strength. In the process of preparing the coating, it is necessary to consider the transparent plastic Not resistant to high temperatures, avoid using high temperatures to treat substrates. [0003] Atomization of transparent materials refers to the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/06C09D1/00C09D7/12B05D1/18B05D3/10B05D7/04B05D7/24C01B33/141
Inventor 贺军辉李彤
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI