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Photosensitive coating and preparation method thereof and photosensitive film made by utilizing same

A photosensitive film and coating technology, which is applied in the field of water-based nano-composite photosensitive coatings and its preparation, can solve problems such as unsatisfactory, and achieve the effects of improving refractive index modulation, enhancing mechanical strength, and improving optical properties

Inactive Publication Date: 2011-03-16
SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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Problems solved by technology

Therefore, it cannot meet the requirements of the above application

Method used

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Embodiment Construction

[0018] The so-called nanocomposite material is a composite material with at least one dimension of the dispersed phase smaller than 100 nanometers. Nanomaterials have very different properties from ordinary size materials. Due to the nanoscale effect, large specific surface area, strong interface interaction and unique physical and chemical properties, the performance of inorganic nanomaterials combined with polymers is better than that of the same group. Physical and chemical properties of conventional materials. The invention improves the optical properties of the holographic photopolymer coating by compounding the nanometer material with high refractive index and the film-forming agent in the photosensitive coating. The main component content of this kind of coating is as follows (percentage by weight):

[0019] Film forming agent: 10%~50%

[0020] Monomer: 15%~30%

[0021] Cross-linking agent: 2%~10%

[0022] Photoinitiator: 20%~50%

[0023] Photosensitizer: 0.05%~1% ...

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Abstract

The invention provides a water nano compound photosensitive coating and a preparation method thereof and a photosensitive film formed by the coating. The water nano composite photosensitive coating is formed by the way that nano material with excellent properties is compounded with film forming agent, thus refractive index modulation degree of photosensitive coating is improved. The coating comprises the following components (by weight percent): 10-50% of film forming agent, 15-30% of monomer, 20-50% of photoinitiator, 0.05-1% of photosensitizer, 2-10% of crosslinking agent and 0.1-1% of nano material. The holographic photosensitive film of the invention comprises a base film, a photosensitive nano compound polymer coating and a surface protective film. The reflecting holographic photosensitive film has higher luminous sensitivity, reflection efficiency and refractive index modulation degree, storage life is long, and hologram is stable.

Description

technical field [0001] The invention relates to a water-based nano-composite photosensitive coating and a preparation method thereof, as well as a red light-sensitive holographic film prepared from the photosensitive coating. Background technique [0002] Nowadays, with the flood of counterfeit and shoddy products all over the world, there is an urgent need for technologies and materials with higher anti-counterfeiting performance. Holographic anti-counterfeiting has higher security features, but it is very difficult to copy it. The application of holographic anti-counterfeiting depends on whether there are suitable holographic recording materials. At present, silver salts, gelatin dichromate and photopolymers are widely used in the market. Among them: silver salt recording materials have low diffraction efficiency, require cumbersome chemical wet post-processing, high cost, and difficult industrialization; dichromated gelatin has low sensitivity and short storage life. Af...

Claims

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Application Information

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IPC IPC(8): C09D4/06C09D7/12G03F7/027G03F7/09
Inventor 黄斗兴王爱荣彭继荣龚祯德
Owner SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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