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Method for preparing Nano silver solution

A nano-silver and solution technology, applied in the field of preparation of nano-silver solution, can solve the problems of difficult industrial control, complex technical process, unstable production, etc., and achieve the effects of easy particle size, stable synthesis process and good stability

Inactive Publication Date: 2007-12-26
昆明汉德纳米生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The fact before us is that the research on nanomaterials in our country is far from meeting the urgent requirements of the development of nanotechnology, and some nanomaterials have become the bottleneck of the development of nanotechnology. More and more, its main production methods are chemical precipitation method, gas phase method, thermochemical method, its technical process is complex, industrial control is difficult, production is unstable, investment is large, and output is low

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  • Method for preparing Nano silver solution
  • Method for preparing Nano silver solution

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Embodiment 1

[0038] As shown in Figure 1, a kind of preparation method of nano-silver solution, the main raw material of described nano-silver solution comprises AgNO 3 , hydrazine hydrate, gellan gum, propylene glycol, triethanolamine, and its weight ratio is AgNO 3 : hydrazine hydrate: gellan gum: propylene glycol: triethanolamine=0.8: 0.8: 0.1: 1.8: 2.8, and prepared according to the following steps,

[0039] a) Prepare AgNO respectively according to the conventional preparation process 3 and the aqueous solution of hydrazine hydrate, after filtering for subsequent use;

[0040] b), mix gellan gum with powdered NaCl or sugar according to the weight ratio of gellan gum: NaCl / sugar=1:9, then put the homogeneously mixed mixture into the ultrasonic field In the high-shear dispersing emulsifier reaction kettle, then add water, heat to 50°C, and the rotation speed is 500rpm / min, under the strong mechanical and hydraulic shearing and centrifugal extrusion produced by the ultrasonic wave and ...

Embodiment 2

[0045] As shown in Figure 2, a kind of preparation method of nano-silver solution, the main raw material of described nano-silver solution comprises AgNO 3 , ascorbic acid, gellan gum, polyethylene glycol, TX-10, its weight ratio is AgNO 3 : ascorbic acid: gellan gum: polyethylene glycol: TX-10=1.2: 1.2: 0.5: 2.2: 3.2, and prepared according to the following steps,

[0046] a) Prepare AgNO respectively according to the conventional preparation process 3 And the aqueous solution of ascorbic acid, standby after filtering;

[0047] b), mix gellan gum with powdered NaCl or sugar according to the weight ratio of gellan gum:NaCl / sugar=1:11, then put the uniformly mixed mixture into an ultrasonic field In the high-shear dispersing emulsifier reaction kettle, then add water, heat to 70°C, and the rotation speed is 700rpm / min, under the strong mechanical and hydraulic shearing and centrifugal extrusion produced by the ultrasonic wave and high-shear dispersing emulsifier , liquid lay...

Embodiment 3

[0052] As shown in Figure 3, a kind of preparation method of nano-silver solution, the main raw material of described nano-silver solution comprises AgNO 3 , sodium citrate, gellan gum, glycerin, Tween, its weight ratio is AgNO 3 : sodium citrate: gellan gum: glycerol: Tween=1: 1: 0.3: 2: 3, and prepared according to the following steps,

[0053] a) Prepare AgNO respectively according to the conventional preparation process 3 and an aqueous solution of sodium citrate, filtered for subsequent use;

[0054] b) Mix gellan gum with powdered NaCl or sugar according to the weight ratio of gellan gum: NaCl / sugar=1:10, then put the homogeneous mixture into the ultrasonic field In the high-shear dispersing emulsifier reaction kettle, then add water, heat to 60°C, and the rotation speed is 600rpm / min, under the strong mechanical and hydraulic shearing and centrifugal extrusion produced by ultrasonic waves and high-shear dispersing emulsifier , liquid layer friction, impact tearing an...

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Abstract

The invention discloses a manufacture method for nanometer silver solution that the main raw materials weight ratio is AgNO3: reducer: cold glue: adjuvant: surface active agent= 0.8-1.2: 0.8-1.2: 0.1-0.5: 1.8-2.2: 2.8-3.2. The producing process includes the following steps: making AgNO3 and reducer solution; mixing cold glue with NaCl or any of sugar according to weight ratio of 1:9-11, putting into high cutting dispersing emulsion machine reaction kettle in ultrasound field, adding water, heating to 50-70 deg.C, rotating speed is 500-700rpm / min, whisking to gain mixture solution A; adding adjuvant and whisking to equal; pumping the solution of AgNO3 and reducer into reaction kettle, increasing rotating speed to 2000-3000rpm / min, continuing whisking for 0.5-24 hours to gain nanometer silver solution that the diameter is 3-60 nanometer. The invention has the advantages of small particle diameter, narrow distribution, high stability, etc.

Description

technical field [0001] The invention belongs to the technical field of nano-silver synthesis, and in particular relates to a preparation method of a nano-silver solution. Background technique [0002] At present, most of the nano-materials synthesized on the market are powdery, such as diatomite-supported silver, zeolite-supported silver, silicate-based silver-supported, etc. These raw materials have certain problems in specific applications, and their popularization and use are subject to severely restricted. If it is used, it must first be ultra-fine powdered, which increases equipment investment and consumes a lot of energy. Moreover, a large amount of waste water is produced in its synthetic process engineering, which increases the cost of post-treatment and affects the ecological environment. Japan, the United States, the United Kingdom, France and Italy have all accelerated the research of nano-powders, especially the research of main materials such as silver powder,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 王发祥杨玲蔡昶麟王艳红
Owner 昆明汉德纳米生物科技有限责任公司
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