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Application of graphene oxide in silver halide photographic material

A technology of photosensitive materials and graphene, which is applied in photosensitive materials, optics, instruments, etc., can solve problems such as poor optimization effects, and achieve the effect of significant sensitization, economic benefits, and low cost

Active Publication Date: 2014-01-29
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

[0005] The purpose of the present invention is to overcome the shortcomings of poor optimization effect of traditional sensitization methods, thereby providing an application of graphene oxide in silver halide photosensitive materials

Method used

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  • Application of graphene oxide in silver halide photographic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] After chemical sensitization and spectral sensitization, the silver bromoiodide photosensitive emulsion is coated on the film base by a photosensitive material coating machine at a temperature of 40°C, then condensed and dried to form a semi-finished product of the finished film. At 23°C and 60% humidity, it was left to balance for 7 days to obtain the finished film. Take out the finished film, cut it into an optical wedge with a size of 14cm×3.5cm, soak it in 0.01mg / mL graphene oxide aqueous dispersion for 5 minutes, then take it out and dry it in the air. , Expose under the condition of shutter time of 0.05 seconds, develop in PQ developer solution at 20°C for 5 minutes, wash with water, fix at F-5 for 10 minutes, take it out and dry it, use a color densitometer, and use the sensitivity Calculation formula S=1 / H (D0+01) See Table 1 for the indicators for measuring and calculating its photosensitive properties.

Embodiment 2

[0019] After chemical sensitization and spectral sensitization, the silver bromoiodide photosensitive emulsion is coated on the film base by a photosensitive material coating machine at a temperature of 40°C, then condensed and dried to form a semi-finished product of the finished film. At 23°C and 60% humidity, it was left to balance for 7 days to obtain the finished film. Take out the finished film, cut it into an optical wedge with a size of 14cm×3.5cm, soak it in 0.1mg / mL graphene oxide aqueous dispersion for 5 minutes, then take it out and dry it in the air. , Expose under the condition of shutter time of 0.05 seconds, develop in PQ developer solution at 20°C for 5 minutes, wash with water, fix at F-5 for 10 minutes, take it out and dry it, use a color densitometer, and use the sensitivity Calculation formula S=1 / H (D0+0.1) See Table 1 for the indicators for measuring and calculating its photosensitive properties.

Embodiment 3

[0021] After chemical sensitization and spectral sensitization, the silver bromoiodide photosensitive emulsion is coated on the film base by a photosensitive material coating machine at a temperature of 40°C, then condensed and dried to form a semi-finished product of the finished film. At 23°C and 60% humidity, it was left to balance for 7 days to obtain the finished film. Take out the finished film, cut it into an optical wedge with a size of 14cm×3.5cm, soak it in a 1mg / mL graphene oxide aqueous dispersion for 5 minutes, then take it out and dry it in the air. Expose with a shutter time of 0.05 seconds, develop in PQ developer solution at 20°C for 5 minutes, wash with water, fix at F-5 for 10 minutes, take it out and dry it, use a color densitometer, and use the sensitivity to calculate Formula S=1 / H (D0+0.1) See Table 1 for the indicators for measuring and calculating its photosensitive properties.

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Abstract

The invention relates to an intensifying method of a silver halide photographic material, and particularly relates to application of graphene oxide in a silver halide photographic material. The method comprises the following steps: adding graphene oxide aqueous dispersion into a coated solution of a silver halide sensitive emulsion after chemical sensitization and spectral sensitization, and then carrying out mechanical coating on a film base; exposing, developing and fixing after drying, and determining; or soaking and taking out the mechanically coated film in the coated solution of the silver halide sensitive emulsion after chemical sensitization and spectral sensitization in the graphene oxide aqueous dispersion; exposing, developing and fixing after drying, and determining. The graphene oxide is applied to the silver halide sensitive emulsion, so that the sensitivity and the contrast of the silver halide sensitive emulsion are significantly improved; the fog density is reduced. Compared with the other existing methods, the sensitization effect of the graphene oxide on the silver halide photographic material is more significant; the graphene oxide is low in cost, economical and practical, mature in technology and simple to operate.

Description

technical field [0001] The invention relates to a sensitization method for silver halide photosensitive materials, in particular to the application of graphene oxide in silver halide photosensitive materials. Background technique [0002] Due to its relatively high sensitivity and excellent image quality, silver halide photosensitive materials can not only be used for exposure and imaging in a wide spectral range such as γ-rays, X-rays, visible light and infrared rays, but also can be used to record electron diffraction, Microscopic tracks and macroscopic images formed by ultrafine particles such as neutron radiation and proton flow are widely used in various fields such as national defense and military, aerospace, scientific research and teaching, and industrial flaw detection. Therefore, researchers at home and abroad are still assiduously studying the photophysical properties and nanostructure of silver halide crystallites, using various means to increase the light absorp...

Claims

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Application Information

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IPC IPC(8): G03C1/10
Inventor 马望京杨新民李智梁庆华琚伟史瑶
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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