Rare-earth composite antibacterial agent and application thereof

A technology of rare earth compounding and antibacterial agent, which is applied in the direction of application, biocide, disinfectant, etc., can solve the problems of affecting the appearance of white or light-colored products, easy to turn black, and rare antibacterial agents, etc., to achieve inhibition of bacterial growth and good structure Stability, good resistance to discoloration

Inactive Publication Date: 2011-08-03
广东炜林纳新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In short, silver-based antibacterial materials are currently the most common inorganic antibacterial materials, but these antibacterial agents loaded with silver ions have several major disadvantages: First, the precious metal silver as an antibacterial component will lead to the production cost of antibacterial agents If it is too high, it will affect its popularization and use in a wide range; second, the silver-loaded antibacterial agent has poor weather resistance, the chemical properties of silver ions are active, and it is sensitive to heat and light, especially the antibacterial agent is easy to turn black after being irradiated by ultrav...

Method used

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  • Rare-earth composite antibacterial agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] At room temperature, dissolve 9g of lanthanum nitrate and 5g of silver nitrate into 150g of deionized water to disperse. After 4 hours of electric stirring to disperse completely, then add 15g of nano-montmorillonite and stir evenly. Add 0.02ml of NaOH, a black precipitate is formed immediately, stop adding NaOH , stirred for 12 hours until the reaction was complete, washed repeatedly with deionized water until neutral, separated, dried, pulverized, and passed through a 200-mesh sieve to obtain sample 1.

[0035] Get 100g of polypropylene, 0.2g of white mineral oil, and 2g of sample 1, mix them uniformly in a twin-screw, and then cut into pellets. The temperature of each section of the extruder is 160-220° C., and the screw speed is 100-300 rpm. After granulation and drying, the national standard antibacterial performance test sample was prepared on a flat vulcanizer. In the antibacterial performance test, Staphylococcus aureus (ATCC 6538) and Escherichia coli (ATCC 259...

Embodiment 2

[0037] At 60-80°C, add 30g of nano-montmorillonite to 250g of water and stir to disperse evenly. Adjust the pH to 7. After 4 hours of electric stirring for complete dispersion, add 4g of silver nitrate and 6g of cerium nitrate and stir to dissolve. Add NaOH , after adjusting the pH value to 5, keep stirring in the dark for 12 hours until the reaction is complete, wash repeatedly with deionized water until neutral, separate, dry, pulverize, and pass through a 200-mesh sieve to obtain sample 2.

[0038] Get 100g of polypropylene, 0.2g of white mineral oil, and 2g of sample 2 in a twin-screw and mix them uniformly before cutting into pellets. The temperature of each section of the extruder is 160-220° C., and the screw speed is 100-300 rpm. After granulation and drying, the national standard antibacterial performance test sample was prepared on a flat vulcanizer. In the antibacterial performance test, Staphylococcus aureus (ATCC 6538) and Escherichia coli (ATCC 25922) were select...

Embodiment 3

[0040] At 60-80°C, add 15g of zeolite and 15g of nano-montmorillonite to 250g of water and stir to disperse evenly, adjust the pH value to 7, and stir for 4 hours after the dispersion is complete, then add 4g of copper chloride and 6g of cerium nitrate and stir to dissolve. Mix well, add NaOH, adjust the pH value to 5, keep stirring in the dark for 12 hours until the reaction is complete, wash with deionized water repeatedly until neutral, separate, dry, pulverize, and then pass through a 200-mesh sieve to obtain sample 3.

[0041] Take 100g of polypropylene, 0.2g of white mineral oil, and 2g of sample 3, mix them uniformly in a twin-screw, and then cut into pellets. The temperature of each section of the extruder is 160-220° C., and the screw speed is 100-300 rpm. After granulation and drying, the national standard antibacterial performance test sample was prepared on a flat vulcanizer. In the antibacterial performance test, Staphylococcus aureus (ATCC 6538) and Escherichia c...

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Abstract

The invention discloses a novel rare earth-containing composite antibacterial agent and application thereof. The rare-earth composite antibacterial agent comprises more than one lanthanoid inorganic compound and more than one antibacterial ionic compound and also comprises a carrier further, wherein the carrier comprises more than one inorganic lamellar material and/or more than one porous material; and the lanthanoid inorganic compounds and the antibacterial ionic compounds are loaded on the inorganic lamellar materials and/or the porous materials. The prepared rare-earth composite antibacterial agent has the characteristics of high color change resistance, heat resistance and antibacterial property and lasting antibiosis, and does not influence the mechanical property and heat resistance of materials when applied to the high polymer materials such as plastics and the like.

Description

technical field [0001] The invention relates to a rare earth composite antibacterial agent, in particular, the invention relates to a rare earth composite antibacterial agent used for plastics, rubber, coatings and the like. Background technique [0002] Antibacterial plastics are a branch of antibacterial materials and a class of materials with antibacterial functions, usually referring to adding antibacterial agents to plastics to make the plastic itself antibacterial. It can inhibit or kill the bacteria stained on the plastic within a certain period of time. Compared with conventional chemical and physical methods, the use of antibacterial plastics has a long sterilization time, which is economical and convenient. [0003] Research on antibacterial plastics began in the 1980s. In recent years, the research and application of antibacterial plastics in developed countries such as Japan, the United States and Western Europe have made great progress. Especially in Japan, an...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N59/20A01N25/08A01N25/34A01P1/00
CPCA01N59/16A01N2300/00A01N25/08A01N25/10A01N59/20
Inventor 郑德陈俊姚有为陈采巧钱玉英魏静刘小梅
Owner 广东炜林纳新材料科技股份有限公司
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