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Coating liquid with high refractive index for transparent holographic film and preparation method thereof

A technology of high refractive index and coating liquid, applied in the direction of coating, epoxy resin coating, etc., can solve the problem of low technical indicators such as diffraction efficiency and signal-to-noise ratio of transparent optical holographic film, difficult to control uniformity, and poor coating transparency To achieve the effect of avoiding structural and functional compatibility and matching problems, reducing complexity and high transparency

Active Publication Date: 2014-09-10
ZHEJIANG JINGHUA LASER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For transparent holographic films, transparent materials such as zinc sulfide and titanium dioxide must be selected as the dielectric layer to obtain transparent holographic patterns. However, the transparent inorganic dielectric layer in the prior art is greatly affected by the high-temperature evaporation process, and the uniform It is difficult to control the properties of the coating, which leads to poor transparency of the coating. Moreover, the existence of the transparent dielectric coating, there are two interfaces: the information layer / medium layer (the first interface), and the media layer / printing rubber layer (the second interface), which may As a result, the diffraction pattern at the first interface is interfered by the diffraction pattern at the second interface, so that the technical indicators such as diffraction efficiency and signal-to-noise ratio of the transparent optical holographic film are lower than those of the aluminum-coated holographic film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-refractive-index coating solution for transparent holographic films, comprising nano-material precursors, butanone, ethylenediamine and epoxy resin E-40, wherein the nano-material precursors include butanone, acetic acid dihydrate Zinc, sodium sulfide nonahydrate, and methylbutylcellulose, of which,

[0037] The proportioning of each component and content (parts by weight) of the precursor solution is as follows:

[0038] Zinc acetate dihydrate 4.8

[0039] Sodium sulfide nonahydrate 4.4

[0040] Butanone 77

[0041] Methyl butyl cellulose 13.8

[0042] The composition and content (volume parts, corresponding to zinc sulfide volume fraction of 0-15%) of the high refractive index coating solution are as follows:

[0043] Butanone (moisture content 1%) 70

[0044] Epoxy resin E-40 16

[0045] Ethylenediamine 8

[0046] Precursor solution 6.

[0047] A method for preparing a high-refractive-index coating solution for a transparent holographic film, comprisin...

Embodiment 2

[0064] A high-refractive-index coating solution for transparent holographic films, comprising nano-material precursors, butanone, ethylenediamine and epoxy resin E-40, wherein the nano-material precursors include butanone, acetic acid dihydrate Zinc, sodium sulfide nonahydrate and methyl butyl cellulose, the composition and content of the nanomaterial precursor described in this embodiment are the same as in Example 1, the difference is only in the nanomaterial precursor, butanone, ethylenediamine and cyclic The volume ratios of epoxy resin E-40 are different, see step 2 of the following high refractive index coating liquid preparation method for details.

[0065] A method for preparing a high-refractive-index coating solution for a transparent holographic film, comprising the steps of:

[0066] Step 1. Preparation of nanomaterial precursor: use butanone as solvent, methyl butyl cellulose as anti-settling agent, weigh zinc acetate dihydrate and sodium sulfide nonahydrate in pr...

Embodiment 3

[0081] A high-refractive-index coating solution for transparent holographic films, comprising nano-material precursors, butanone, ethylenediamine and epoxy resin E-40, wherein the nano-material precursors include butanone, acetic acid dihydrate Zinc, sodium sulfide nonahydrate and methyl butyl cellulose, the composition and content of the nanomaterial precursor described in this embodiment are the same as in Example 1, the difference is only in the nanomaterial precursor, butanone, ethylenediamine and cyclic The volume ratios of epoxy resin E-40 are different, see step 2 of the following high refractive index coating liquid preparation method for details.

[0082] A method for preparing a high-refractive-index coating solution for a transparent holographic film, comprising the steps of:

[0083] Step 1. Preparation of nanomaterial precursor: use butanone as solvent, methyl butyl cellulose as anti-settling agent, weigh zinc acetate dihydrate and sodium sulfide nonahydrate in pr...

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Abstract

The invention discloses a coating liquid with high refractive index for a transparent holographic film and a preparation method thereof. The coating liquid with high refractive index comprises a nanomaterial precursor, butanone, ethanediamine and epoxy resin E-40, wherein the nanomaterial precursor comprises butanone, an acetic acid zinc salt, sodium sulfide and methyl butyl cellulose. The preparation method of the coating liquid with the high refractive index is that the nanomaterial is subjected to in-situ synthesis in the precursor of organic resin or resin, and the prepared coating liquid has the characteristics of high refractive index and high light transmittance.

Description

technical field [0001] The invention relates to a high-refractive-index coating liquid and a preparation method thereof, in particular to a high-refractive-index coating liquid for a transparent holographic film and a preparation method thereof, and belongs to the technical field of laser anti-counterfeiting. Background technique [0002] At present, conventional optical holographic films are generally composed of functional coatings such as a plastic base layer, a separation layer, an information layer, a dielectric layer, and a printed rubber layer. In the preparation process, the separation layer is first coated on the plastic base layer, and then the information layer is coated on the separation layer, and then the plastic film coated with the separation layer and the information layer is molded on a molding machine, and the holographic pattern is embossed on the On the information layer, and on the information layer printed with holographic patterns, a dielectric layer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12
Inventor 邵波熊建华徐意
Owner ZHEJIANG JINGHUA LASER TECH CO LTD
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