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Nano metal-stearate composite material and its preparation method and application

A stearate and nano-metal technology, applied in the field of nano-materials, can solve the problems of affecting the mechanical properties of materials, uneven dispersion, large agglomeration of powders, etc., and achieve good antibacterial and disinfection effects of nano-metals.

Active Publication Date: 2021-10-01
广州市科瑨材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The uneven dispersion may even directly affect the mechanical properties of the material, such as a large agglomeration of the powder

Method used

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  • Nano metal-stearate composite material and its preparation method and application
  • Nano metal-stearate composite material and its preparation method and application
  • Nano metal-stearate composite material and its preparation method and application

Examples

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preparation example Construction

[0044] A kind of preparation method of nano metal-stearate composite material of the present invention, comprises the following steps:

[0045] Dissolve stearate in heated low-carbon alcohol, and mix with nano metal particles;

[0046] Cool down to precipitate the nanometer metal-stearate complex.

[0047] Through the above preparation method, utilizing the feature that the solubility of stearate in low-carbon alcohol changes greatly with temperature, stearate and nano-metal particles are dissolved in low-carbon alcohol in steps under heating conditions, and hardened in the solution. The stearate is adsorbed on the surface of the nano-metal particles, and during the cooling process, as the solubility of the stearate decreases, the stearate and the nano-metal particles co-precipitate to form a composite nanomaterial. Compared with simply mixing stearate powder and nano-metal particles, when applied to the preparation of functional fibers, plastics, rubber materials or coatings...

Embodiment 1

[0060] Example 1 Preparation of 20wt% nanometer silver-calcium stearate composite powder

[0061] The preparation method of the 20wt% silver-calcium stearate nanocomposite powder of the present embodiment is as follows

[0062] 1) Add 1000ml of absolute ethanol into a three-necked flask (with condensing reflux device), heat in a water bath until boiling, and condense and reflux for 60 minutes;

[0063] 2) Add 80 grams of calcium stearate into absolute ethanol (about 80°C) heated to boiling in a water bath, continue heating and stirring to dissolve, and obtain calcium stearate ethanol solution;

[0064] 3) Measure 1000ml of nano-silver (particle size around 25nm) nano-silver sol with a concentration of 20000ppm, slowly add it to calcium stearate ethanol solution, and continue to stir for 15min;

[0065] 4) The three-necked flask is placed in ice water for rapid cooling to obtain 20wt% nanometer silver-calcium stearate composite powder precipitation;

[0066] 5) vacuum filtrat...

Embodiment 2

[0068] Example 2 Preparation of 10wt% nanometer copper-barium stearate composite powder

[0069] 1) Add 1000ml of isopropanol into a three-neck flask (with condensing reflux device), heat in a water bath until boiling, and condense and reflux for 90 minutes;

[0070] 2) Add 90 grams of barium stearate to the isopropanol solution (about 80°C) heated to boiling in a water bath, continue heating and stirring to dissolve, and obtain calcium stearate isopropanol solution;

[0071] 3) Measure 500ml of nano-copper (particle size is about 50nm) nano-copper sol with a concentration of 20000ppm, slowly add it to the barium stearate isopropanol solution, and continue to stir for 20 minutes;

[0072] 4) cooling the three-necked flask in cold water to obtain nano copper-barium stearate composite powder precipitation;

[0073] 5) vacuum filtration;

[0074] 6) Drying in an oven at 50° C. for 8 hours to obtain a nano-copper-barium stearate composite powder, wherein the nano-copper content ...

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Abstract

The invention provides a kind of nanometer metal-stearate composite material and preparation method thereof, described nanometer metal-stearate composite material is mainly prepared by nanometer metal particle and stearate; Described nanometer metal particle accounts for 0.1%‑90% of the total mass of raw materials. Without introducing other materials, the composite material is obtained by co-precipitation with nano-metal particles and stearate in high-temperature low-carbon alcohol, which is conducive to the uniform dispersion of nano-metals in plastics, plastics, coatings, and fibers, and better exert its function. The stearate-nano-metal novel composite material has good effects of nano-metal antibacterial and disinfection, anti-mildew and anti-algae when applied to fibers, plastics, rubber and coatings.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a nanometer metal-stearate composite material and its preparation method and application. Background technique [0002] Due to the nanometerization of its particle size, the specific surface area of ​​nano-metals is greatly increased, thus making a qualitative leap in its various properties. It is greatly favored by users in the fields of antibacterial disinfection, anti-mildew and anti-algae, anti-radiation, anti-static, material performance enhancement, and electronic electrodes. For example, antibacterial textiles, nano-silver antibacterial catheters, nano-silver antibacterial PP-R tubes, nano-copper anti-algae plastics, nano-nickel anti-radiation and anti-static coatings, etc. can be prepared. [0003] The currently developed nano-metal systems include pure nano-silver powder, sol, inorganic powder / nano-metal composite powder, etc. Such as SiO 2 -Ag composite powder, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/08C08K5/098D01F1/10C09D5/14C08J9/00
CPCC08J9/0023C08J9/008C08J9/0095C08K3/08C08K5/098C08K2003/0806C08K2003/0831C08K2003/085C08K2003/0862C08K2201/003C08K2201/011C09D5/14C09D7/67D01F1/103
Inventor 宁金威郑涛杜军马清金
Owner 广州市科瑨材料科技有限公司
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