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Preparation of hologram reflection-type photo-induced polyalcohol dry film

A technology of photopolymers and thin films, which is applied in the direction of polyhalogenated compound components, optics, photosensitive materials, etc., and can solve the problems of inconvenient large-scale production and expensive production costs

Inactive Publication Date: 2008-07-30
李妤 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, photopolymers are mainly used in the field of anti-counterfeiting and head-up displays to improve the use of dichromate gelatin to make green photosensitive holographic materials. This manufacturing process has very strict requirements on the environment and is not convenient for large-scale production. expensive

Method used

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  • Preparation of hologram reflection-type photo-induced polyalcohol dry film
  • Preparation of hologram reflection-type photo-induced polyalcohol dry film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The configuration of photosensitive liquid should be carried out under red light, the sensitizer is 5-chloroindanone, the initiator is bis-imidazole O-CL-HABI, the monomer is 2, 4, 6 bromophenyl ester of acrylic acid, and the film-forming substance is Polyvinyl acetate, synthesis accelerator acrylic anhydride. Put the above-mentioned medicines into the Erlenmeyer flask in a certain proportion, and dissolve them one by one with methanol and dichloropropane solvent. After the photosensitive solution is prepared, apply it on the glass substrate, and then place it on a horizontal platform to dry naturally. .

[0032] Record the light path diagram as figure 1 As shown, for recording reflective holographic gratings, the laser light emitted by laser 1 is first adjusted by beam expander 3, then collimated by collimator 4, and then divided into two beams by beam splitter 5, and passed by reflector 6, so that These two beams of reference light and object light are incident on t...

Embodiment 2

[0038] Repeat the method of Example 1 according to the content of each component specified in the following table 1, but replace the 2,4,6 bromophenyl ester of acrylic acid with the 5 chlorophenyl ester of acrylic acid, and list the test data results in table 1.

Embodiment 3

[0040] Repeat the method of Example 1 according to the contents of each component specified in Table 1 below, but replace 5-chloroindanone with 4-bromoindanone of acrylic acid, and list the test data results in Table 1.

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Abstract

The invention relates to a holographic reflection type photopolymer film composition and preparation method thereof. The preparation method comprises the following steps of dissolving indenone, bis-imidazole (O-CL-HABI), polyvinyl acetate and acrylic anhydride in a dichloropropane / methanol mixed solution under red light condition, coating the obtained solution on transparent PETG (poly(ethylene terephthlate-co-cyclohexanedimethyllene terephthalate), and thermosetting in a convection thermostat. The film of the invention has very high diffraction efficiency and good light transmission performance, overcomes the disadvantages of the material prepared by the prior art including poor storage durability and easy fading away, and effectively solves problems of raw material including oversensitivity to ambient humidity and high volatility.

Description

technical field [0001] The invention relates to a preparation method of a holographic reflective photopolymer dry film. Background technique [0002] As a multidisciplinary high-tech crystallization, holography has been widely used in three-dimensional display, three-dimensional storage, optical components and other fields. As laser holographic recording materials, silver halide materials, dichromate gelatin materials and photosensitive polymer materials are widely used at present. [0003] The application of holography depends to a large extent on whether there is a suitable holographic recording material. Among the commonly used holographic materials, silver salt has high sensitivity, but the diffraction efficiency is low. Only about 40%. The hologram made of dichromate gelatin has a very high diffraction efficiency, which can reach more than 90%. Laser gemstones and many holographic elements seen on the market are made of this material, but it also has disadvantages , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/23G03H1/04G03C1/675G03C1/73G03C5/00
Inventor 李妤张晓强
Owner 李妤
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