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Preparation method of micron silver balls

A technology of silver balls and preparation steps, applied in the field of micron materials, can solve the problems of high requirements for equipment and experimental conditions, difficult operation, etc., and achieve the effect of improving synthesis efficiency, mild conditions and single product

Active Publication Date: 2018-08-28
CHINA LUCKY FILM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are few patent reports on the preparation method of micron silver spheres. Although the above disclosed inventions can all prepare micron silver spheres, they require high equipment and experimental conditions, are not easy to operate, and the products are not single-shaped silver spheres.

Method used

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  • Preparation method of micron silver balls

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The modified polyester is synthesized according to the method reported in the patent document CN104672437A, the number average molecular weight is 11000, and its structural formula is:

[0030]

[0031] Dissolve 0.42g of silver nitrate in 10mL of ethylene glycol solvent for later use. Dissolve 0.77g of modified polyester with a number average molecular weight of 11,000 in 40mL of the same solvent, heat up to 140°C and stir. After stirring for one hour, add 0.25mL of 0.60mmol / L iron trichloride ethylene glycol solution, after stirring evenly, add the silver nitrate solution dropwise into the reaction, and stop heating after stirring for 8 hours. After cooling the obtained reaction mother liquor, dilute the reaction mother liquor with water and ethanol, centrifuge, collect the precipitate and disperse it with ethanol to obtain the product.

Embodiment 2

[0033] In the present embodiment, the synthesis of modified polyester is the same as in Example 1, and the number average molecular weight is 20000, and its structural formula is:

[0034]

[0035] Dissolve 0.42g of silver nitrate in 10mL of ethylene glycol solvent for later use. Dissolve 0.40g of modified polyester with a number average molecular weight of 20,000 in 40mL of the same solvent, raise the temperature to 130°C and stir, and after stirring for one hour, add 0.25mL of 0.60mmol / L iron trichloride ethylene glycol solution, stir evenly Silver nitrate solution was added dropwise to the reaction, and the reaction was stirred for 6 hours before heating was stopped. After cooling the obtained reaction mother liquor, dilute the reaction mother liquor with water and ethanol, centrifuge, collect the precipitate and disperse it with ethanol to obtain the product.

Embodiment 3

[0037] In the present embodiment, the synthesis of modified polyester is the same as in Example 1, and the number average molecular weight is 11000, and its structural formula is:

[0038]

[0039] Dissolve 0.71g of silver nitrate in 10mL of ethylene glycol solvent for later use. Dissolve 0.40g of modified polyester with a number average molecular weight of 11000 in 40mL of the same solvent, raise the temperature to 130°C and stir, and after stirring for one hour, add 0.25mL of 0.60mmol / L ferric trichloride ethylene glycol solution, stir well and put Silver nitrate solution was added dropwise to the reaction, and the reaction was stirred for 8 hours before heating was stopped. After cooling the obtained reaction mother liquor, dilute the reaction mother liquor with water and ethanol, centrifuge, collect the precipitate and disperse it with ethanol to obtain the product.

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Abstract

The invention relates to a preparing method of a micrometer silver ball. The preparing method comprises the steps of 1, dissolving silver nitrate into an alcohol solvent to prepare 1-2 parts by volume of 0.1 mol / L-1 mol / L solutions for standby application; dissolving modified polyester into the same alcohol solvent to prepare 2-4 parts by volume of 0.05 mol / L-2 mol / L solutions; raising temperature to 100-300 DEG C and stirring for 0.5-24 hours, adding 0.1 mmol-1 mmol chloride solution, dropwise adding a silver nitrate solution into the reaction after evenly stirring, and stopping heating after stirring and reacting for 0.5-24 hours; 2,diluting a reacting mother solution with water and ethyl alcohol after cooling the reacting solution obtained in the step 1, conducting centrifugation, collecting sediment, and dispersing the sediment with ethyl alcohol, so that the micrometer silver ball is prepared.

Description

technical field [0001] The invention relates to a method for synthesizing micron silver balls by using modified polyester, belonging to the technical field of micron materials. Background technique [0002] The micron and nanostructures of metallic silver have unique optical, electrical, magnetic and catalytic properties, and can be widely used in biosensors, surface Raman enhanced (SERS) and micromechanical devices. The shape and size of the silver micro-nano structure will directly affect its optical and magnetic properties. Silver microspheres can effectively improve the sensitivity of SERS detection, and micron silver spheres with surface modification will be widely used in superhydrophobic, photocatalytic, substance detection and other fields. At present, there are many methods for preparing micron silver spheres, but there is no fast and efficient method that can synthesize a single conventional micron silver sphere in large quantities. The development of a method wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 王权王茜骆小红
Owner CHINA LUCKY FILM CORP
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