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Silver-containing nanometer composite antibacterial coating and preparation method thereof

A composite antibacterial and silver nanotechnology, used in coatings, paints containing biocides, antifouling/underwater coatings, etc. Effect, low cost, high mechanical strength effect

Active Publication Date: 2020-02-28
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the dispersion methods reported so far are surface modification of nanoparticles. Most of these methods are complicated to operate, with cumbersome steps, great environmental pollution, and bring a lot of inconvenience to the preparation of nanocomposite coatings.

Method used

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  • Silver-containing nanometer composite antibacterial coating and preparation method thereof
  • Silver-containing nanometer composite antibacterial coating and preparation method thereof
  • Silver-containing nanometer composite antibacterial coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of P(MMA-co-BA-co-MAMS) / Ag nanocomposite antibacterial coating:

[0041] (1) Weigh 0.5g MAMS, 0.057g initiator KPS, dissolve them in 50mL deionized water, then weigh 5g monomer butyl acrylate and 5g methyl methacrylate, add them into a 100mL four-necked flask, and Stir at a rotating speed for pre-emulsification for 2 hours. After the end, add the pre-emulsion into the constant pressure dropping funnel for use;

[0042] (2) Then disperse 0.5g of Ag nanoparticles and 0.5g of MAMS in 50mL of deionized water, and use JY92-II N-type ultrasonic cell pulverizer to ultrasonically disperse. The set parameters are: power 600W, working time 3s, intermittent time 2s, Sonicate for 30 minutes in an ice bath environment, add the ultrasonic dispersion into a 250mL four-necked flask; then weigh 5g of butyl acrylate and 5g of methyl methacrylate, add them to a 250mL four-necked flask, pre-emulsify in a water bath at room temperature for 0.5h, set The stirring speed is 700rpm...

Embodiment 2

[0046] (1) Weigh 0.5g MAMS, 0.057g initiator KPS, dissolve them in 50mL deionized water, then weigh 5g monomer butyl acrylate and 5g methyl methacrylate, add them into a 100mL four-necked flask, and Stir at a rotating speed for pre-emulsification for 2 hours. After the end, add the pre-emulsion into the constant pressure dropping funnel for use;

[0047] (2) Then disperse 0.25g of Ag nanoparticles and 0.5g of MAMS in 50mL of deionized water, and use JY92-II N-type ultrasonic cell pulverizer to ultrasonically disperse. The set parameters are: power 600W, working time 3s, intermittent time 2s, Sonicate for 30 minutes in an ice bath environment, add the ultrasonic dispersion into a 250mL four-necked flask; then weigh 5g of butyl acrylate and 5g of methyl methacrylate, add them to a 250mL four-necked flask, pre-emulsify in a water bath at room temperature for 0.5h, set The stirring speed is 700rpm, and after 0.5h, the temperature starts to rise; when the temperature reaches 65°C, ...

Embodiment 3

[0051] (1) Weigh 0.5g MAMS, 0.057g initiator KPS, dissolve them in 50mL deionized water, then weigh 5g monomer butyl acrylate and 5g methyl methacrylate, add them into a 100mL four-necked flask, and Stir at a rotating speed for pre-emulsification for 2 hours. After the end, add the pre-emulsion into the constant pressure dropping funnel for use;

[0052] (2) Disperse 1.0g of Ag nanoparticles and 0.5g of MAMS in 50mL of deionized water, and use JY92-II N-type ultrasonic cell pulverizer to ultrasonically disperse. The set parameters are: power 600W, working time 3s, intermittent time 2s, Sonicate for 30 minutes in an ice bath environment, add the ultrasonic dispersion into a 250mL four-necked flask; then weigh 5g of butyl acrylate and 5g of methyl methacrylate, add them to a 250mL four-necked flask, pre-emulsify in a water bath at room temperature for 0.5h, set The stirring speed is 700rpm, and after 0.5h, the temperature starts to rise; when the temperature reaches 66°C, weigh ...

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Abstract

The invention discloses a silver-containing nanometer composite antibacterial coating and a preparation method thereof. The preparation method comprises: synthesizing a maleic acid mono-fatty alcoholester sodium salt methyl methacrylate by using polyacrylate and polymethyl methacrylate as a polyacrylate copolymerization matrixes, wherein the methyl methacrylate used as both a polymerizable emulsifier and an auxiliary comonomer regulates the dispersion of Ag nanoparticles in the polymer matrix through electrostatic interaction and steric hindrance interaction; preparing a nanometer composite emulsion through semi-continuous emulsion polymerization; preparing a nanometer composite coating by using butyl acrylate and polymethyl methacrylate as the main components of the coating through an emulsion polymerization method; and dispersing Ag nanoparticles in the polymer matrix to prepare the high-dispersion nanometer composite antibacterial coating.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a silver-containing nanocomposite antibacterial coating and a preparation method thereof. Background technique [0002] With the continuous improvement of human living standards, people have higher requirements for living, working, living environment quality and health. In the natural environment, various bacteria, fungi and other microorganisms are widely distributed. These microorganisms not only bring great damage to various materials, but also cause great damage to human health due to various diseases caused by the action of microorganisms. harm. As an important building material, coating is widely used in furniture production, material packaging and other aspects in daily life. At the same time, due to the consideration of people's own safety and the demand for environmental protection, the application of antibacterial coatings has attracted more and more a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D133/12C09D5/14C08F220/18C08F220/14C08F222/16C08F2/24
CPCC08F2/24C08F220/14C08F220/18C08K2003/0806C08K2201/011C09D5/14C09D133/08C09D133/12C08K3/08
Inventor 郑俊萍陈雨
Owner TIANJIN UNIV
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