Preparation method of nanoscale zirconium phosphate silver-carrying composite inorganic antimicrobial agent

A technology of silver-loaded zirconium phosphate and inorganic antibacterial agent, which is applied in the fields of botanical equipment and methods, biocides, disinfectants, etc., can solve the problems of increased sol agglomeration, difficulty in making ultrafine or nanoscale powders, etc. Achieve good antibacterial performance

Active Publication Date: 2011-11-16
SANDA FILM SCI & TECH XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the existing process of preparing zirconium phosphate silver-loaded antibacterial agent powder, two sol drying and two sol calc

Method used

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  • Preparation method of nanoscale zirconium phosphate silver-carrying composite inorganic antimicrobial agent
  • Preparation method of nanoscale zirconium phosphate silver-carrying composite inorganic antimicrobial agent

Examples

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Embodiment 1

[0034] Take 500g zirconium oxychloride octahydrate (chemically pure), dissolve it with 2 liters of pure water, add 2g PEG (polyethylene glycol), 2g PVA (polyvinyl alcohol), and stir well. Get 285g ammonium dihydrogen phosphate (chemically pure) in addition, dissolve with 2 liters of pure water, put into the overhead tank, be mixed with solution. Slowly add ammonium dihydrogen phosphate solution dropwise to the zirconium oxychloride solution under high-speed stirring, and a precipitation reaction occurs at room temperature. After the reaction is completed, the product enters the ultrafiltration membrane system for desalination operation, such as figure 1 As shown in , the zirconium phosphate feed liquid ultrafiltration membrane impurity removal system mainly includes a material tank 1 , an ultrafiltration membrane system 2 and a heat exchanger 4 . The feed tank 1 has a water inlet 6, a feed inlet 8 and a discharge outlet 7, the water inlet 6 communicates with a continuous wate...

Embodiment 2

[0045] Take 100kg zirconium oxychloride octahydrate (chemically pure) in a 1000L enamel container, dissolve it with 200 liters of pure water, add 200g PEG, 200g PVA, and stir well. Get 57kg ammonium dihydrogen phosphate (chemically pure) in addition, dissolve with 200 liters of pure water, put into the overhead tank, be mixed with solution. Slowly add ammonium dihydrogen phosphate solution dropwise to the enamel container under high-speed stirring, and a precipitation reaction occurs at room temperature. After the reaction is completed, the product enters the ultrafiltration membrane system for desalination operation. After running for 5 to 6 hours, use silver nitrate solution to check whether the filtrate contains chloride ions.

[0046] After chlorine ions are completely removed, stop the operation of the ultrafiltration membrane system, collect the precipitate, pour it into a 300L enamel reactor, add pure water, add 100g of PVA and 100g of CMC surfactant, stir until it is h...

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Abstract

The invention discloses a preparation method of a nanoscale zirconium phosphate silver-carrying composite inorganic antimicrobial agent. The preparation method comprises the following steps of 1, a nanoscale zirconium phosphate carrier preparation step specifically comprising that enough sodium dihydrogen phosphate aqueous solution is added into zirconium oxychloride aqueous solution to undergo areaction to produce nanoscale zirconium phosphate carriers, 2, an ultrafiltration step specifically comprising that the nanoscale zirconium phosphate carriers obtained from the step 1 are added into an ultrafilter membrane system for ultrafiltration and when a result of a detection adopting silver ions shows that there is not chloride ions in filtrate, the ultrafiltration is completed, 3, an antimicrobial metal ion adsorption and displacement step specifically comprising that nanoscale zirconium phosphate carrier sol precipitates are dissolved in pure water and then antimicrobial metal ion aqueous solution is added into the nanoscale zirconium phosphate carrier sol precipitate aqueous solution to undergo complete adsorption and displacement reactions, and 4, an inorganic antimicrobial powder preparation step specifically comprising that reaction products obtained from the step 3 are filtered by a pump and washed to form filter cakes and the filter cakes is dried by an oven, crushed slightly and calcined to form finished products. The preparation method removes an inorganic salt by-product from a zirconium phosphate synthesis process through adopting an ultrafilter membrane thus enables zirconium phosphate carriers to be utilized directly for adsorption and displacement of metal ions without high-temperature calcination.

Description

technical field [0001] The invention relates to a preparation method of an antibacterial agent, in particular to a preparation method of a nanoscale zirconium phosphate silver-loaded composite inorganic antibacterial agent. Background technique [0002] Inorganic antibacterial agents can be divided into silicate series (zeolite, clay mineral, SiO 2 etc.), phosphates (zirconium phosphate, calcium phosphate, etc.), oxides (ZnO, TiO 2 , ZrO 2 , CaO, etc.) and others. According to the different active ingredients of antibacterial agents, it can be divided into metal ion antibacterial agents (containing silver, copper, zinc and other metals), titanium series (photocatalytic TiO 2 ) antibacterial agent, zinc oxide antibacterial agent, etc. The chemical structure of silver determines that silver has a high catalytic ability. The reduction potential of silver in a high oxidation state is high enough to generate atomic oxygen in the surrounding space. Atomic oxygen has strong oxi...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N25/08A01P1/00
Inventor 傅祖显洪昱斌蓝伟光
Owner SANDA FILM SCI & TECH XIAMEN
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