A method for detecting the morphology of silver behenate crystals in a silver salt imaging material

A silver behenate and detection method technology, applied in the direction of analyzing materials, using radiation for material analysis, using radiation diffraction for material analysis, etc., can solve the problems of low success rate, endangering the health of operators, and high production costs, and achieve Reduce environmental hazards, reduce washing times, and improve dispersibility

Active Publication Date: 2020-02-14
CHINA LUCKY FILM CORP +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are still many disadvantages in the solvent-based preparation process: (1) The solvent of the coating solution is completely organic solvent, which causes environmental pollution due to the volatilization of the organic solvent in the product development and production process, endangering the health of the operator
(2) Because organic solvents are flammable and explosive, the production plant must be equipped with expensive solvent recovery devices and explosion-proof facilities
(3) Organic solvents are completely used in the preparation process, and the production cost is high
[0004] Liu Xianhao conducted research on the preparation, thermal behavior and application of silver behenate nanocrystals (Ph. This method has cumbersome steps and a low success rate

Method used

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  • A method for detecting the morphology of silver behenate crystals in a silver salt imaging material
  • A method for detecting the morphology of silver behenate crystals in a silver salt imaging material
  • A method for detecting the morphology of silver behenate crystals in a silver salt imaging material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: Silver behenate crystal morphology detection process

[0030] (1) Prepare a mixed solution of silver behenate crystals with a concentration of 50g / L. The solvent of the mixed solution is acetone, methyl ethyl ketone, and isopropanol according to the volume ratio of 0.7:0.9:1. After ultrasonic dispersion, centrifuge for 1min, and its rotating speed is 5000rpm. Discard the supernatant;

[0031] (2)Use absolute ethanol to ultrasonically disperse the sample treated in step (1), centrifuge for 1min at a speed of 5000rpm, and discard the supernatant;

[0032] (3) Add a concentration of 30g / L fluorine-containing surfactant solution to the sample treated in step (2), after ultrasonic dispersion, drop the sample on a copper grid coated with a Formova film, dry it under a 250W infrared lamp, Gold was plated in the sputtering apparatus to increase the conductivity for easy observation, the purity of the gold target was 99.999%, and the coating was 25mA for 40s.

[...

Embodiment 2

[0035] Embodiment 2: Silver behenate crystal morphology detection process

[0036] (1) Prepare a mixed solution of silver behenate crystals with a concentration of 55g / L. The solvent of the mixed solution is acetone, methyl ethyl ketone, and isopropanol according to the volume ratio of 0.8:0.9:1. After ultrasonic dispersion, centrifuge for 3min, and its rotating speed is 10000rpm. Discard the supernatant;

[0037] (2)Use absolute ethanol to ultrasonically disperse the sample treated in step (1), centrifuge for 3min at a speed of 10000rpm, discard the supernatant;

[0038] (3) Add the fluorosurfactant solution with a concentration of 60g / L to the sample treated in step (2). After ultrasonic dispersion, the sample is dropped on a copper grid coated with a Formova film, dried under a 250W infrared lamp, and dried under ion Gold was plated in the sputtering apparatus to increase the conductivity for easy observation, the purity of the gold target was 99.999%, and the coating was ...

Embodiment 3

[0041] Embodiment 3: Silver behenate crystal morphology detection process

[0042] (1) Prepare a mixed solution of silver behenate crystals with a concentration of 60g / L. The solvent of the mixed solution is acetone, methyl ethyl ketone, and isopropanol according to the volume ratio of 0.9:1:1.1. After ultrasonic dispersion, centrifuge for 5 minutes, and its rotating speed is 15000rpm. Discard the supernatant;

[0043] (2)Use absolute ethanol to ultrasonically disperse the sample treated in step (1), centrifuge for 5min at a speed of 15000rpm, and discard the supernatant;

[0044] (3) Adding a concentration of 80g / L fluorine-containing surfactant solution to the sample processed in step (2), after ultrasonic dispersion, the sample is dropped on a copper grid coated with a Formova film, dried under a 250W infrared lamp, and placed in an ion Gold was plated in the sputtering apparatus to increase the conductivity for easy observation, the purity of the gold target was 99.999%, ...

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Abstract

The invention provides a method for detecting crystal morphology of silver behenate in a silver salt imaging material. The method comprises the following steps: (1) a silver behenate crystal mixed solution whose concentration is 50-100g / L is prepared, a solvent of the mixed solution is prepared by mixing acetone, butanone and isopropanol according to a volume ratio 0.7-1.2:0.9-1.5:1-1.3, ultrasonic dispersion is carried out, and after centrifugation is carried out, a supernatant is thrown away; (2) ultrasonic dispersion of the sample after treatment is carried out with anhydrous alcohol, centrifugation is carried out, and supernatant is thrown away; (3) a fluorine containing surfactant solution of a certain concentration is added into the sample after treatment, ultrasonic dispersion is carried out, the sample is dropped on a copper net which is coated with a Formar film, the material is dried under an infrared lamp, and gold plating is carried out in a piece of ion sputtering equipment; (4) an electronic microscope system is employed, and morphology of the sample to be detected is observed. The method is advantageous in that washing frequency of the mixed solution of silver behenate crystal is reduced, the method is simple and easy to operate, the method is easy to control, usage amount of ethanol is reduced, and harm to environment is reduced. The fluorine containing surfactant solution is introduced, a water system is used for replacing an organic solvent system, further dispersibility of silver behenate crystal is further improved, and success rate of the experiments is increased from 60% to 92% or above.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a method for detecting the morphology of silver behenate crystals. Background technique [0002] Silver salt imaging materials can be classified into solvent-based and water-based based on the binder used. Currently, silver salt imaging materials are mainly solvent-based. Water-based silver salt imaging materials are aqueous systems, which are relatively better than solvent-based products. There are still many disadvantages in the solvent-based preparation process: (1) The solvent of the coating solution is completely organic solvent, which causes environmental pollution due to the volatilization of the organic solvent in the product development and production process, endangering the health of the operator. (2) Because organic solvents are flammable and explosive, the production plant must be equipped with expensive solvent recovery devices and explosion-proof facilities. (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/04G01N23/20G01N23/2251G01N23/2202G01N23/2005G01N1/28G01N1/38
CPCG01N1/28G01N1/38G01N23/00G01N23/22G01N23/2202
Inventor 夏江南高建辉刘贤豪姜宁韩明星
Owner CHINA LUCKY FILM CORP
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