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Efficient and environmentally-friendly antibacterial and mildewproof inorganic composite nano-powder slurry and its preparation method

An inorganic composite, antibacterial and antifungal technology, applied in botany equipment and methods, fungicides, chemicals for biological control, etc., can solve problems such as inability to broad-spectrum sterilization, large investment at one time, skin irritation, etc., to achieve Excellent antibacterial and antifungal properties, simple process, and high antibacterial rate

Active Publication Date: 2012-06-27
广东腐蚀科学与技术创新研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional antibacterial agents are mostly organic antibacterial agents, which have a fast sterilization speed and mature development and use technology, but they have varying degrees of toxicity, skin irritation, unpleasant smell, volatile, short efficacy, and cannot be broad-spectrum sterilized. Disadvantages such as complicated operation and large one-time investment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take deionized water 840g in a 2000ml beaker, stir at a high speed under the condition of 1000rpm with a high-speed disperser, add polymer dispersant (Disperbyk192 of German Byk chemical company) 60g, add respectively the magnesium oxide powder 70g of average particle size 50nm, 20 g of zinc oxide powder and 10 g of titanium oxide powder were dispersed for 60 minutes, and the mixture was subjected to planetary ball milling for 5 hours at a speed of 300 rpm to form a highly dispersed inorganic composite nano-powder. According to the original ratio, wherein the weight ratio of nano-magnesium oxide is 7%, the weight ratio of nano-zinc oxide is 2%, the weight ratio of nano-titanium oxide is 1%, the total weight ratio of composite powder is 10%, and the weight ratio of polymer dispersant is 6%.

[0040]The inorganic composite nano powder slurry is added into nutrient broth medium (NB) with a powder content of 0.5% by weight, and the bactericidal rate of Escherichia coli reac...

Embodiment 2

[0042] Take deionized water 700g in a 2000ml beaker, stir at a high speed under the condition of 2000rpm with a high-speed disperser, add polymer dispersant (Disperbyk192 of German Byk chemical company) 100g, add respectively the magnesium oxide powder 40g of average particle size 60nm, 120 g of zinc oxide powder and 40 g of titanium oxide powder were dispersed for 120 min, and the mixture was subjected to planetary ball milling for 10 h at a speed of 500 rpm to form a highly dispersed inorganic composite nano-powder. According to the original proportion, wherein the weight ratio of nano-magnesium oxide is 4%, the weight ratio of nano-zinc oxide is 12%, the weight ratio of nano-titanium oxide is 4%, the total weight ratio of composite powder is 20%, and the weight ratio of polymer dispersant is 10%.

[0043] The inorganic composite nano powder slurry is added into nutrient broth medium (NB) with a powder content of 0.5% by weight, and the bactericidal rate of Escherichia coli ...

Embodiment 3

[0045] Take deionized water 890g in a 2000ml beaker, stir at a high speed under the condition of 500rpm with a high-speed disperser, add polymer dispersant (Disperbyk192 of German Byk chemical company) 30g, add respectively the magnesium oxide powder 40g of average particle size 30nm and 40g of zinc oxide powder was dispersed for 10 minutes, and the mixture was subjected to vibratory ball milling for 2 hours to form a highly dispersed inorganic composite nano-powder slurry. According to the original ratio, the weight ratio of nano magnesium oxide is 4%, the weight ratio of nano zinc oxide is 4%, the total weight ratio of composite powder is 8%, and the weight ratio of polymer dispersant is 3%.

[0046] The inorganic composite nano powder slurry is added into nutrient broth medium (NB) with a powder content of 0.5% by weight, and the bactericidal rate of Escherichia coli reaches 99.5% in 1 hour, and the bactericidal rate of Escherichia coli reaches 99.94% in 24 hours. The inorg...

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Abstract

Relateing to the field of antibacterial materials, the invention specifically provides an efficient and environmentally-friendly antibacterial and mildewproof inorganic composite nano-powder slurry obtained through compounding nano-magnesium oxide and other nano-inorganic materials and its preparation method. The nano-powder slurry takes nano-magnesium oxide as the main body, which is then compounded with one or more inorganic materials of nano-zinc oxide, nano-titanium oxide, nano-copper oxide, nano-cuprous oxide, nano-silver oxide, nano-zinc sulfide, nano-zirconium oxide, nano-yttrium oxide, nano-alumina, and nano-calcium oxide so as to form the nano-powder slurry, which comprises, by weight percent: 0.1-40% of nano-magnesium oxide, 0.01-40% of other inorganic materials, 0.5-12% of a polymeric dispersant, and the balance a solvent. In the method, a nano-inorganic material enters a solution composed of the polymeric dispersant and the solvent by means of high speed dispersion according to a predetermined proportion, and after ball milling, the composite nano-powder slurry can be obtained. The composite nano-powder slurry can be applied in antibacterial coatings, deodorants, textiles, paper products, plastics, rubbers, water treatment agents, ship protective agents, cosmetics and other aspects.

Description

technical field [0001] The invention relates to the field of antibacterial materials, in particular to a high-efficiency, environment-friendly, antibacterial, anti-mildew, and anti-mildew inorganic composite nano-powder slurry obtained by compounding nano-magnesia and other nano-inorganic substances and a preparation method thereof. Background technique [0002] The growth of bacteria and mold in people's living environment and some articles not only endangers human health, but also pollutes the environment and damages articles. Therefore, the research and application of high-efficiency and environmentally friendly antibacterial and antifungal agents are of great significance to protecting human health and improving the living environment. Traditional antibacterial agents are mostly organic antibacterial agents, which have a fast sterilization speed and mature development and use technology, but they have varying degrees of toxicity, skin irritation, unpleasant smell, volati...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01N59/16A01N59/06A01N25/04A01P1/00A01P3/00
Inventor 吴进怡柴柯
Owner 广东腐蚀科学与技术创新研究院
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