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A kind of nano-silver antibacterial glue and preparation method thereof

A nano-silver, antibacterial glue technology, applied in the direction of biocide-containing paints, coatings, antifouling/underwater coatings, etc., can solve the problems of reducing antibacterial and bactericidal properties, reducing silver ion concentration, and easy loss of silver ions, etc. To achieve the effect of improving antibacterial effect, avoiding loss and delaying oxidation

Active Publication Date: 2020-08-18
济南豪瑞生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silver ion antibacterial glue prepared by this patent also has deficiencies: (1) the silver in the antibacterial glue is an ion state, and the silver ion is easily lost and oxidized, thereby reducing the concentration of the silver ion to reduce the antibacterial and bactericidal performance; (2) the silver ion higher concentration

Method used

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  • A kind of nano-silver antibacterial glue and preparation method thereof
  • A kind of nano-silver antibacterial glue and preparation method thereof
  • A kind of nano-silver antibacterial glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]

[0028]

[0029] Preparation

[0030] (1) Add 90 g of povidone to 10 L of 3 mg / ml silver nitrate solution, adjust the pH to 4.0, then add 24 g of cystine, and react at 30° C. for 2 h to obtain silver nanoparticles;

[0031] (2) Take hypromellose, polyvinyl alcohol, xanthan gum, and citric acid according to the proportioning ratio, and then put them into a rotary stirring mixing pot, and mix at 150r / min for 40min;

[0032] (3) take by weighing nano-silver and add in the compound of step (2), mix 30min at 150r / min by proportioning;

[0033] (4) After mixing and evenly mixing, subpackage is carried out to obtain the nano-silver antibacterial glue.

Embodiment 2

[0035]

[0036] Preparation

[0037] (1) Add 40 g of povidone to 2L of 5 mg / ml silver nitrate solution, adjust the pH to 4.5, add 10 g of cystine, and react at 40° C. for 1 h to obtain silver nanoparticles;

[0038] (2) Weigh hypromellose, polyvinyl alcohol, xanthan gum and citric acid according to the proportion, then put them into a rotary stirring mixing pot, and mix at 200r / min for 30min;

[0039] (3) take by weighing nanometer silver and add in the compound of step (2), 200r / min mixes 30min;

[0040] (4) After mixing and evenly mixing, subpackage is carried out to obtain the nano-silver antibacterial glue.

Embodiment 3

[0042]

[0043] Preparation

[0044] (1) Add 70 g of povidone to 5 L of 4 mg / ml silver nitrate solution, adjust the pH to 4.0, add 12 cystine, and react for 1 h at a temperature of 40° C. to obtain nano-silver;

[0045] (2) Take hypromellose, polyvinyl alcohol, xanthan gum, and citric acid according to the proportioning ratio, then put them into a rotary stirring mixing pot, and mix at 180r / min for 50min;

[0046] (3) take by weighing nano-silver and add in the compound of step (2), 200r / min mixes 20min by proportioning;

[0047] (4) After mixing and evenly mixing, subpackage is carried out to obtain the nano-silver antibacterial glue.

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Abstract

The invention relates to nanometer silver antibacterial glue and a preparation method thereof. The nanometer silver antibacterial glue is prepared from the following raw materials in parts by weight:20 to 30 parts of hydroxypropyl methylcellulose, 20 to 50 parts of polyvinyl alcohol, 1 to 5 parts of xanthan gum, 1 to 3 parts of citric acid and 0.01 to 0.05 part of nanometer silver. The preparation method of the nanometer silver antibacterial glue comprises the following steps of (1) weighing hydroxypropyl methylcellulose, polyvinyl alcohol, xanthan gum and citric acid according to the proportioning ratio; adding the materials into a rotating stirring mixing pot; performing mixing for 30 to 50 min at 150 to 200 r / min; (2) adding the nanometer silver into a mixture in the step (1); performing mixing for 20 to 30 min at 150 to 200r / min; (3) after the uniform mixing, performing split charging. The nanometer silver antibacterial glue provided by the invention has the advantages that the silver loss can be avoided; in addition, the nanometer silver oxidization can be retarded, so that the antibacterial glue can maintain the antibacterial activity for a long time; povidone is contained in the formula, so that the agglomeration of the nanometer silver can be prevented.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a nano-silver antibacterial glue and a preparation method thereof. Background technique [0002] With the rapid development of industry and the deteriorating environment, coatings are developing in the direction of functionalization and ecology, and the development of functional coatings that meet environmental protection requirements has become the consensus of the industry. In the field of wood coatings, furniture plays an important role in the environment where people work and live, but it may also become a medium for the transmission of germs. Therefore, how to effectively inhibit the growth and reproduction of wood bacteria has important practical significance. [0003] Silver is a relatively common and relatively cheap precious metal. Due to its excellent physical and chemical properties, silver has become a research hotspot in the fields of physics, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/14C09D129/04C09D101/28C09D7/63
CPCC08K2003/0806C08K2201/011C08L2205/03C09D5/14C09D7/63C09D101/284C09D129/04C08L1/284C08L5/00C08K3/08C08K5/092C08L29/04
Inventor 黄建国
Owner 济南豪瑞生物技术有限公司
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