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A silver-containing inorganic antibacterial agent

A technology of inorganic antibacterial agent and antibacterial agent, applied in the field of antibacterial agent, can solve the problems of difficult crushing and easy discoloration of powder, and achieve the effect of improving water resistance and discoloration resistance

Active Publication Date: 2021-07-27
安徽正合雅聚新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the glass-loaded silver antibacterial agent is obtained by quenching after melting and then pulverizing, it is difficult to pulverize it to within 3 microns, and the finer the pulverized particle size, the easier it is for the powder to change color.

Method used

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  • A silver-containing inorganic antibacterial agent
  • A silver-containing inorganic antibacterial agent
  • A silver-containing inorganic antibacterial agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Add 0.05 moles of magnesium hydroxide with a particle size of 1 micron, 0.0039 moles of zinc chloride with a particle size of 15 microns, 0.0039 moles of ammonium chloride with a particle size of 15 microns, and 0.0059 moles of Sodium chloride, grind and mix evenly, add 5 drops of polyethylene glycol 400 to continue grinding, then add 0.041 mole of phosphoric acid successively, continue grinding.

[0081] It can be found that the mixture slowly thickens from wet, then becomes pasty and fine, and then starts to harden and become moist.

[0082] Put the above-mentioned wet block mixture into a ball mill for ball milling, control the temperature in the ball mill tank at 50 degrees Celsius, take it out after 6 hours, carefully wash the obtained product, and dry it at 110 degrees Celsius, thus synthesizing the sodium ion and ammonium ion of magnesium phosphate compounds.

[0083] The amount of each component of this compound is measured, and the result composition formula i...

Embodiment 2

[0090] A support material composed of the following composition formula obtained in Example 1 was used.

[0091] Na0.3(NH4)0.2Mg2.55Zn0.2(PO4)2·0.09H2O

[0092] 70 ml of an aqueous solution of deionized water in which 0.0084 moles of silver nitrate was dissolved was added to the carrier material, and stirred at room temperature for 2 hours to complete the loading of silver ions. The silver-loaded slurry was filtered and washed until the conductivity of the filtrate was 360 μS, and the solid content was adjusted to a volume specific gravity of 1.12 g / ml after drying at 110° C.

[0093] By measuring the amount of each component of the dry solid component, the composition formula obtained is as follows:

[0094] Ag0.3Na0.11H0.09Mg2.5Zn0.25(PO4)2 0.13H2O

[0095] Furthermore, the silver-containing inorganic antibacterial agent of the present invention was obtained after being processed in a high-temperature furnace at 900° C. for 10 hours, cooled naturally, and pulverized.

Embodiment 3

[0097] In the mortar, add 0.06 moles of magnesium sulfate heptahydrate with a particle diameter of 15 microns, 0.00046 moles of zinc chloride with a particle diameter of 15 microns, and 0.0083 moles of ammonium chloride with a particle diameter of 15 microns to grind and mix evenly. Continue to grind with ethylene glycol 400, then add 0.046 moles of disodium hydrogen phosphate dodecahydrate one after another, continue to grind, and continue to drop ammonia water to control the pH value to 5.2.

[0098] The mixture was found to be a very thin paste.

[0099] Put the above-mentioned pasty mixture into a ball mill for ball milling, control the temperature in the ball mill tank at 70 degrees Celsius, take it out after 6 hours, carefully wash the resulting product, and dry it at 110 degrees Celsius, thus synthesizing the compound containing sodium ions and ammonium ions Magnesium phosphate compound.

[0100] The amount of each component of this compound is measured, and the result...

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Abstract

The present invention provides a silver-containing inorganic antibacterial agent with excellent transparency, which is realized by the silver-containing inorganic antibacterial agent of formula AgaMbMgcRd(PO4) nH2O containing magnesium pyrophosphate, wherein M is selected from alkali metal ions, Ions of at least one of ammonium ions, hydrogen ions, and oxonium ions, R is a metal ion with a valence of 2, a, b, c, d, and n are 3 or less, a, c are positive numbers, and satisfy 2.5 <(c+d)<3, a+b+2(c+d)=6. The silver-containing inorganic antibacterial agent of the present invention has the characteristics of excellent heat resistance, discoloration resistance, water washing resistance and processing performance when applied to polymer materials, and can be especially applied to transparent products.

Description

technical field [0001] The invention relates to the field of antibacterial agents, in particular to a silver-containing inorganic antibacterial agent with excellent transparency, a preparation method thereof, and an antibacterial product. Background technique [0002] The preparation of silver-containing antibacterial agents generally uses natural inorganic minerals or synthetic compounds with adsorption properties as carriers. In the liquid phase system, silver ions are loaded in the carrier by ion exchange or adsorption, and then cured at high temperature. way made. The adsorption properties of natural inorganic minerals are often unsatisfactory, resulting in a small amount of adsorbable silver ions and poor binding force. The result is low antibacterial efficiency and poor antibacterial water resistance. Applied to some relatively low-end polymer material products. Some artificially synthesized inorganic carriers, silicate carriers, such as zeolite, have higher adsorpti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/26A01N59/16A01P1/00C08L23/12C08L77/00C08L67/02C08K3/32
CPCA01N59/16A01N59/26C08K3/32C08L23/12C08L77/00C08L67/02
Inventor 赵正坤
Owner 安徽正合雅聚新材料科技有限公司
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