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A kind of polymer surface protection monodisperse nano-silver particle and preparation method

A nano-silver particle, monodisperse technology, used in textiles, papermaking, fiber processing, etc., can solve problems such as poor dispersion, and achieve the effect of reducing production costs, huge social benefits, and controlling water pollution problems.

Inactive Publication Date: 2011-12-28
翔瑞(泉州)纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patent documents limit the application of nano-silver to a certain extent due to the fixation of nano-silver on the substrate. If transparent parts cannot be made, the dispersibility is poor.

Method used

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  • A kind of polymer surface protection monodisperse nano-silver particle and preparation method
  • A kind of polymer surface protection monodisperse nano-silver particle and preparation method
  • A kind of polymer surface protection monodisperse nano-silver particle and preparation method

Examples

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Embodiment

[0028] 1. Inject the hydrophobic monomer and the water-absorbing monomer into the mixed solvent with the volume ratio of ethanol / acetone / water=1:5:1 according to the mass ratio of 1:9-3:7, and the concentration of the mixed solution is controlled Between 10% and 20%, add 0.5% initiator AIBN by monomer weight, react at 60°C for 8 hours under stirring conditions, quickly heat the system to 70°C for 10 minutes, and cool to room temperature. spare;

[0029] 2. Inject a solvent with a volume ratio of ethanol / acetone / water=1:5:1 into the above solution, dilute it into a 0.5-5% polymer solution, and this solution is the polymer shell preparation (A agent );

[0030] 3. Prepare silver nitrate aqueous solution (Agent B) with a concentration of 1-5% and hydrazine hydrate solution (Agent C) with a concentration of 5-40%, and then slowly add Agent B and Agent C dropwise to the In agent A. It is advisable that the material ratio of C agent and B agent is 1:3-2:1;

[0031] After aging at ...

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Abstract

The invention discloses a polymer surface protection monodisperse nano silver particle. A monodisperse ball-shaped efficient anti-agglomeration nano silver preparation is prepared in situ through a synthetic high polymer stabilizing additive containing sulfydryl under the effect of a mixed solvent by the action of silver nitrate and a reducing agent, and the grain size of the preparation is about 10 nanometers. The nano silver particle provided by the invention has outstanding dispersion, and the product of the invention can be used as a medical material for treating burns and scalds, and a material for treating skin infection of trauma patients and preventing and treating incision infection after skin and surgical operation incision. The nano silver particle has the excellent properties of broad-spectrum antibiotic property, long-acting property, kill drug resistance and the like.

Description

technical field [0001] The invention discloses a polymer surface-protected monodisperse nano-silver particle and a preparation method thereof, belongs to the technical field of nano-structure materials according to the International Patent Classification (IPC), and particularly relates to a surface-covered polymer protector whose shape is spherical silver nano-particles. Particle technology. Background technique [0002] Silver has good electrical conductivity, thermal conductivity and reflective properties in metals, as well as good chemical stability and ductility, so silver has a wide range of uses in industry. Due to the high surface activity and surface energy of nano silver particles, in addition to the above advantages, they also have special properties such as antistatic, antimagnetic, bactericidal, and catalytic, and can be widely used in catalyst materials, antistatic materials, antibacterial materials, and low temperature heat conduction. Materials and photonic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/02D06M11/83
Inventor 张瑞表陈冬陈江枫涂辉槟
Owner 翔瑞(泉州)纳米科技有限公司
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