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Nano composite light absorption material and preparation method thereof

A light-absorbing material, nano-composite technology, applied in optics, photographic technology, instruments, etc., can solve the problems of large coating amount, high raw material cost, increased consumption of chemical liquid aging, performance degradation, etc., to reduce the amount and price. low cost effect

Inactive Publication Date: 2010-01-13
CHINA LUCKY FILM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When nano-metallic silver is used as a light-blocking layer on double-sided photo paper, the coating amount of black nano-silver colloid is obviously too large. There is a phenomenon of residual silver after ordering, the photo is obviously yellowish, and there is also the defect of high raw material cost

Method used

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  • Nano composite light absorption material and preparation method thereof
  • Nano composite light absorption material and preparation method thereof
  • Nano composite light absorption material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Adjust the temperature of the gelatin aqueous solution with a concentration of 60 g / L to 41 ° C, and add CaCO with a particle size of 50 to 70 nm 3 The particles are dispersed in an aqueous gelatin solution to give CaCO 3 A slurry with a particle weight concentration of 0.5%. Under stirring, add the silver nitrate solution that concentration is 1mol / L to slurry by 10% of slurry volume, then add sodium sulfite-hydroquinone solution by 48% of slurry volume (sodium sulfite concentration is 0.2mol / L, hydroquinone Concentration is 0.1mol / L), after reacting for 5min, add 0.01mol / L stabilizer S by 4% of the slurry volume 1 , add 0.1mol / L water-soluble dye D according to 12% of the slurry volume 3 , react for 5min. Cool down to 30°C and add 10% β-naphthalenesulfonic acid sodium formal aqueous solution as a sedimentation agent according to 4% of the slurry volume, settle, filter, wash, and the obtained precipitate is the nanocomposite of calcium carbonate / silver / dye light-ab...

Embodiment 2

[0024] Adjust the temperature of the gelatin aqueous solution with a concentration of 40g / L to 38°C, and add Al with a particle size of 25-50 nm 2 o 3 The particles are dispersed in an aqueous gelatin solution to give Al 2 o 3 A slurry with a particle weight concentration of 0.2%. Under stirring, add 0.1mol / L water-soluble dye D to the slurry according to 10% of the volume of the slurry 1 、D 2 、D 3 mixed solution (D 1 、D 2 、D 3 The molar ratio is 1:1:1), reacted for 5min, then added 1mol / L silver nitrate solution by 15% of the slurry volume, then added sodium sulfite-hydroquinone solution by 65% ​​of the slurry volume (sodium sulfite concentration is 0.2 mol / L, hydroquinone concentration is 0.1mol / L), reacted for 2min. Add 0.01mol / L stabilizer S according to 4.5% of the volume of the slurry 2 . Cool down to 30°C, add β-naphthalenesulfonic acid sodium formal aqueous solution with a concentration of 10% according to the weight of 2.5% of the slurry volume, settle, fil...

Embodiment 3

[0027] Adjust the temperature of the gelatin aqueous solution with a concentration of 100g / L to 50°C, and take TiO with a particle size of 50-70 nm in a molar ratio of 1:1. 2 Particles and BaSO with a particle size of 60-80 nanometers 4 The particles are dispersed in an aqueous gelatin solution to obtain a slurry with a particle mass concentration of 2%. Under stirring, add 2mol / L silver nitrate solution according to 50% of the slurry volume, after fully mixing, add sodium sulfite-hydroquinone solution according to 220% of the slurry volume (the concentration of sodium sulfite is 0.2mol / L, and the concentration of hydroquinone is 0.1 mol / L), reacted for 10min, then added 0.01mol / L stabilizer S according to 30% of the slurry volume 1 , Add 0.01mol / L water-soluble dye D according to 3.5% of the volume of the slurry 3 , react for 5min. Cool down to 35°C, add β-naphthalenesulfonic acid sodium formal solution with a mass concentration of 10% according to 8% of the volume of the ...

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Abstract

The invention discloses a nano composite light absorption material and a preparation method thereof; the nano composite light absorption material contains inorganic matter particles and metallic silver deposited on the inorganic matter particles, and the weight ratio between the inorganic matter particles and the metallic silver is 1:0.1-20; the average grain diameter of the particles of the material is 20-100 nanometers. The preparation method comprises: dispersing the inorganic matter particles into gelatin water solution, adding silver salt water solution, reducing agent, stabilizing agent and water soluble dye under stirring, and obtaining the precipitate which is the nano composite light absorption material. The invention can reduce the dosage of silver, and has the capability to absorb ultraviolet-visible light that is obviously stronger than that of nano silver, so that the nano composite light absorption material is efficient and low in price and can be taken as anti-halation material of single-side photosensitive material and photoresist material of double-side photosensitive material.

Description

technical field [0001] The invention relates to a light-absorbing material, in particular to a nanocomposite light-absorbing material used in image recording materials as a light-absorbing layer material and a preparation method thereof. Background technique [0002] Classical theory shows that silver nanoparticles have a characteristic absorption peak caused by particle plasmon resonance for light waves with a wavelength of 390-450nm. The maximum absorption wavelength of silver nanoparticles with a particle size of less than 5nm is around 400nm. increases, and its absorption peak red shifts. Due to the stable ultraviolet-visible light absorption spectrum of nano-silver particles, nano-silver particles with different particle sizes can be prepared according to different needs, which can effectively absorb ultraviolet-visible light of different wavelengths. [0003] However, as silver is a heavy metal, its price is very expensive. Although silver nanoparticles have excellent...

Claims

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Application Information

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IPC IPC(8): G03C7/30
Inventor 蔡英韩肖广彬方永增任守用郑国华朱体德吴建新杜和武
Owner CHINA LUCKY FILM CORP
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