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Copper-rare earth compound antimicrobial agent and preparation method and application thereof

A compound antibacterial agent and rare earth composite technology, which is applied in the direction of botanical equipment and methods, applications, adhesive additives, etc., can solve the problems of poor antibacterial activity of zinc ions, etc., and achieve good color stability, bacteria inhibition, and mildew resistance. Effect

Inactive Publication Date: 2012-01-25
广东迪美生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor antibacterial activity of zinc ions themselves, a very high concentration is required to meet the antibacterial requirements in practical applications.

Method used

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  • Copper-rare earth compound antimicrobial agent and preparation method and application thereof
  • Copper-rare earth compound antimicrobial agent and preparation method and application thereof
  • Copper-rare earth compound antimicrobial agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Contains 0.13mol / L copper nitrate and 2.4×10 in 100ml -2 mol / L cerium nitrate [Ce(NO 3 ) 3 ] into the mixed aqueous solution, add 10.0 g of composite carrier (the weight ratio of sodium zirconium phosphate and tourmaline is 7:3), stir and react at 70°C for 6 hours, then filter, wash, dry in sequence, and then bake at 800°C After 3 hours, it was finally ultrafinely pulverized to an average particle size of less than 5.0 μm to obtain a composite antibacterial agent with a copper loading of 6.4 wt % and a cerium loading of 2.7 wt %. The test results are shown in Table 1.

Embodiment 2

[0026] Contains 0.06mol / L copper acetate and 3.6×10 in 100ml -2 mol / L cerium nitrate [Ce(NO 3 ) 3 ] into the mixed aqueous solution, add 10.0 g of composite carrier (the weight ratio of sodium zirconium phosphate and tourmaline is 7:3), stir and react at 60°C for 7 hours, then filter, wash and dry in sequence, and then bake at 900°C After 2 hours, it was finally ultrafinely pulverized to an average particle size of less than 5.0 μm to obtain a composite antibacterial agent with a copper loading of 3.4 wt % and a cerium loading of 4.1 wt %. The test results are shown in Table 1.

Embodiment 3

[0028] Contains 0.20mol / L copper nitrate and 1.2×10 in 100ml -2 mol / L cerium nitrate [Ce(NO 3 ) 3 ] in the mixed aqueous solution, add 10.0 g of composite carrier (the weight ratio of sodium zirconium phosphate and tourmaline is 7:3), stir and react at 80°C for 5 hours, then filter, wash, and dry in sequence, and then in 700°C Roasting for 4 hours, finally ultra-fine pulverization until the average particle size is less than 5.0 μm, to obtain a composite antibacterial agent with a copper loading of 8.7wt% and a cerium loading of 1.5wt%. The test results are shown in Table 1.

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Abstract

The invention provides a copper-rare earth compound antimicrobial agent and a preparation method and an application thereof. The antimicrobial agent is compound carrier prepared by chemically-synthesized sodium zirconium phosphate and natural tourmaline according to the weight ratio of 1.2-5.7:1 and loaded by copper ions and rare earth ions by an ion exchange method, wherein the content of the copper ions is 3.4-9.0wt percent, the content of the rare earth ions is 1.5-4.5 wt percent, and the rare earth comprises La, Ce, Nd, Sm and Eu. The preparation method comprises the steps of exchanging the copper ions and the rare earth ions into the carrier through a liquid phase or solid phase ion exchange method and preparing the compound antimicrobial agent through proper post treatment. Containing three antimicrobial active centers of the copper ions, the rare earth ions and negative ions, which can generate synergistic effect, the compound antimicrobial agent has the characteristics of better thermal stability and light resistance, stable color and low cost, and can be added to materials such as plastics, rubber, fiber, coating, bonding adhesive, ceramics and the like for preparing antimicrobial functional materials and products.

Description

technical field [0001] The invention belongs to the field of antibacterial materials, and in particular relates to an inorganic composite antibacterial agent containing copper ions, rare earth ions and negative ions, and a preparation method and application thereof. Background technique [0002] Due to the extensive use of various soluble disinfectants and organic antibacterial agents, the incidence of global infectious diseases that were once suppressed has shown a sharp rise. Not only have new pathogenic microorganisms been discovered one after another, but also the mutated populations of known microorganisms are also increasing. More and more, such as SARS, bird flu, mad cow disease and mad cow disease, have caused serious casualties and huge economic losses to humans. Therefore, it is an effective method to develop and use new antibacterial materials with high safety and long-lasting effect. That is to say, long-term and safe antibacterial materials and products are use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/20C09D7/12A01N59/16C09D5/14C08K3/10C09J11/04C04B41/85A01P1/00D01F1/10
Inventor 欧阳友生谭绍早施庆珊陈仪本黄小茉
Owner 广东迪美生物技术有限公司
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