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Preparation method and application of nano-silver particles

A technology of nano-silver particles and silver nitrate, which is used in textiles, papermaking, fiber processing, etc., to achieve the effect of simple process, mild reaction, and increased added value

Inactive Publication Date: 2015-11-18
赵兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the preparation of nano-silver using humic substances as stabilizers and reducing agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 1g of silver nitrate and 1g of humic substances into 100ml of deionized water, mix and stir evenly, then place in a microwave oven, heat at 600w for 10min, wash repeatedly with ethanol and deionized water, centrifuge, and vacuum dry at 80°C for 12h to obtain silver nanoparticles .

[0016] Prepare a nano-silver solution with a concentration of 0.1g / L, then immerse the fabric in it, the immersion time is 100min, two dipping and two rolling, the pressure is 1kg / m 2 , the liquid retention rate is 90%, pre-baked at 120°C for 3 minutes, baked at 180°C for 30 seconds, washed with water until neutral, and then dried at 30°C at low temperature; the fabric contains veil and bottom yarn, and the veil is 150D / 96F Double yarn made of polyester low stretch yarn DTY and PHA fiber blended, the blending ratio of face yarn DTY and PHA is 60%:40%, and the bottom yarn is 150D / 144F polyester low stretch yarn DTY.

Embodiment 2

[0018] Add 1g of silver nitrate and 5g of humic substances into 100ml of deionized water, mix and stir evenly, then place in a microwave oven, heat at 600w for 30min, wash repeatedly with ethanol and deionized water, centrifuge, and vacuum dry at 80°C for 12h to obtain silver nanoparticles .

[0019] Prepare a nano-silver solution with a concentration of 1g / L, and then immerse the fabric in it. The immersion time is 100min, two dipping and two rolling, and the pressure is 1kg / m 2 , the liquid retention rate is 90%, pre-baked at 120°C for 3 minutes, baked at 180°C for 30 seconds, washed with water to neutral and then dried at 30°C at low temperature; the fabric contains veil and bottom yarn, and the veil is 150D / 96F Double yarn made of polyester low stretch yarn DTY and PHA fiber blended, the blending ratio of face yarn DTY and PHA is 60%:40%, and the bottom yarn is 150D / 144F polyester low stretch yarn DTY.

Embodiment 3

[0021] Add 1g of silver nitrate and 10g of humic substances into 100ml of deionized water, mix and stir evenly, then place in a microwave oven, heat at 600w for 60min, wash repeatedly with ethanol and deionized water, centrifuge, and vacuum dry at 80°C for 12h to obtain silver nanoparticles .

[0022] Prepare a nano-silver solution with a concentration of 10g / L, then immerse the fabric in it, the immersion time is 100min, two dipping and two rolling, the pressure is 1kg / m 2 , the liquid retention rate is 90%, pre-baked at 120°C for 3 minutes, baked at 180°C for 30 seconds, washed with water to neutral and then dried at 30°C at low temperature; the fabric contains veil and bottom yarn, and the veil is 150D / 96F Double yarn made of polyester low stretch yarn DTY and PHA fiber blended, the blending ratio of face yarn DTY and PHA is 60%:40%, and the bottom yarn is 150D / 144F polyester low stretch yarn DTY.

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Abstract

The invention relates to a preparation method and application of nano-silver particles. Humus is added into a silver nitrate solution for evenly mixing and stirring, then the mixture is placed into a microwave oven to be heated at 600 w for 10-60 min, ethyl alcohol and deionized water are used for repeated cleaning for centrifugal, drying is performed to obtain the nano-silver particles, then, a fabric is soaked into a nano-silver solution with the concentration being 0.01-10 g / L, and two-time soaking and two-time rolling are performed. Under microwave irradiation, silver nitrate is used as a silver source, water is a solvent, humus is a stabilizing agent and a reducing agent, and the nano-silver colloid is rapidly obtained on the condition that no other reducing agents are added. The preparation method has the advantages that the technology is simple, the reaction is mild, and environmental protection is achieved. The obtained nano-silver particles are used for the field of spinning, a blended fabric with the sterilization effect can be obtained, and the additional value of textile is greatly increased.

Description

technical field [0001] The invention belongs to the field of textiles, in particular to a preparation method and application of nano silver particles. Background technique [0002] Textiles are recognized as a medium for the growth of microorganisms such as bacteria and fungi. Microbial communities in nature widely exist in the surrounding environment, and can multiply rapidly once encountering suitable humidity, nutrients and temperature. Microorganisms growing on textiles not only affect the performance of textiles themselves, but also affect the health of users. Therefore, how to suppress or kill the microorganisms attached to textiles, especially the textile industry, is an urgent problem to be solved. [0003] Antibacterial textiles can increase the added value of products and meet people's needs for health and environmental protection. Therefore, they have attracted more and more attention from textile researchers and have great market potential. In the research fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83B22F9/24D06M101/32
Inventor 赵兵
Owner 赵兵