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Silver-loaded graphene/waterborne polyurethane-acrylate antibacterial emulsion and preparation method thereof

A water-based polyurethane and acrylate technology, which is applied in the field of preparation of UV-curable silver-loaded graphene/water-based polyurethane-acrylate antibacterial emulsion, can solve the problems of strong toxicity, heavy odor, and poor weather resistance of antibacterial polyurethane, and achieve safe and non-toxic Toxic reaction time, cost reduction, and easy-to-obtain raw materials

Active Publication Date: 2019-07-23
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, and a kind of silver-loaded graphene / water-based polyurethane-acrylate antibacterial emulsion and preparation method thereof are provided to solve the problem that the antibacterial polyurethane prepared in the prior art has strong toxicity, heavy odor and poor weather resistance

Method used

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  • Silver-loaded graphene/waterborne polyurethane-acrylate antibacterial emulsion and preparation method thereof
  • Silver-loaded graphene/waterborne polyurethane-acrylate antibacterial emulsion and preparation method thereof
  • Silver-loaded graphene/waterborne polyurethane-acrylate antibacterial emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] In this experiment, the UV-curable silver-loaded graphene / water-based polyurethane-acrylate antibacterial emulsion was prepared according to the following steps;

[0044] 1. Under the condition of ice-water bath, mix 3.0g graphite powder and 70mL concentrated H 2 SO4 , 1.5g of sodium nitrate was mixed in a 250mL Erlenmeyer flask, slowly added 9.0g of potassium permanganate under magnetic stirring, continued to stir in an ice-water bath for 0.5h, then raised the temperature to 35°C and stirred for 24h. Slowly add 140mL of distilled water dropwise to the reaction solution, then add about 1L of distilled water for dilution, stir well and then slowly add 20mL of 30% hydrogen peroxide solution dropwise until the mixed solution is golden yellow, then add 200mL of 1mol / L hydrochloric acid solution, and let it stand After precipitation, centrifuge and wash until the mixed solution reaches a pH of 5-7; then ultrasonically peel at 30°C for 2 hours, and then dialyze for 8 days wit...

Embodiment 2

[0049] In this experiment, UV-curable silver-loaded graphene / waterborne polyurethane-acrylate antibacterial emulsion was prepared according to the following steps;

[0050] 1. Under the condition of ice water bath, mix 3.0g graphite powder, 70mL concentrated H 2 SO 4 , 1.5g of sodium nitrate was mixed in a 250mL Erlenmeyer flask, slowly added 9.0g of potassium permanganate under magnetic stirring, continued to stir in an ice-water bath for 0.5h, then raised the temperature to 35°C and stirred for 24h. Slowly add 140mL of distilled water dropwise to the reaction solution, then add about 1L of distilled water for dilution, stir well and then slowly add 20mL of 30% hydrogen peroxide solution dropwise until the mixed solution is golden yellow, then add 200mL of 1mol / L hydrochloric acid solution, and let it stand After precipitation, centrifuge and wash until the mixed solution reaches a pH of 5-7; then ultrasonically peel at 30°C for 2 hours, and then dialyze for 8 days with a di...

Embodiment 3

[0055] In this experiment, UV-curable silver-loaded graphene / waterborne polyurethane-acrylate antibacterial emulsion was prepared according to the following steps;

[0056] 1. Under the condition of ice water bath, mix 3.0g graphite powder, 70mL concentrated H 2 SO 4 , 1.5g of sodium nitrate was mixed in a 250mL Erlenmeyer flask, slowly added 9.0g of potassium permanganate under magnetic stirring, continued to stir in an ice-water bath for 0.5h, then raised the temperature to 35°C and stirred for 24h. Slowly add 140mL of distilled water dropwise to the reaction solution, then add about 1L of distilled water for dilution, stir well and then slowly add 20mL of 30% hydrogen peroxide solution dropwise until the mixed solution is golden yellow, then add 200mL of 1mol / L hydrochloric acid solution, and let it stand After precipitation, centrifuge and wash until the mixed solution reaches a pH of 5-7; then ultrasonically peel at 30°C for 2 hours, and then dialyze for 8 days with a di...

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Abstract

The invention discloses a preparation method of a silver-loaded graphene / waterborne polyurethane-acrylate antibacterial emulsion. The preparation method comprises the following steps: firstly, preparing graphene oxide by adopting an improved Hummers method; then modifying the graphene oxide through diisocyanate and adsorbing silver nitrate through static electricity; reducing the graphene oxide and the silver nitrate by utilizing L-ascorbic acid at the same time to prepare a silver-loaded graphene dispersion solution; then carrying out free radical polymerization on the silver-loaded graphenedispersion solution and a polyurethane-acrylate emulsion prepared from the diisocyanate, an oligomer diol, a chain extender and an acrylate type monomer under ultraviolet light irradiation, so as to prepare the UV (Ultraviolet) cured type silver-loaded graphene / waterborne polyurethane-acrylate antibacterial emulsion. According to the UV cured type silver-loaded graphene / waterborne polyurethane-acrylate antibacterial emulsion prepared by the preparation method, inorganic and organic components have relatively good compatibility, and waterborne polyurethane is modified through silver-loaded graphene, so that the antibacterial performance is enhanced and the antibacterial emulsion has wider application in the fields including medical sanitation and personal care.

Description

technical field [0001] The invention relates to an antibacterial emulsion, in particular to a preparation method of a UV-curable silver-loaded graphene / aqueous polyurethane-acrylate antibacterial emulsion. Background technique [0002] Water-based polyurethane (WPU) uses water as a solvent and has the characteristics of green environmental protection, safe transportation and good weather resistance. It is used in the manufacture of coatings, inks, leather, textiles, construction, adhesives, medical devices, personal care and other products, especially in Medical devices and personal care have high requirements for its antibacterial properties, and silver ions are widely used as metal ion antibacterial agents, known for their excellent antibacterial effect and low risk to living organisms. In 2004, researchers at the University of Manchester in the United Kingdom repeatedly peeled off graphene with the help of scotch tape. Graphene is a kind of carbon atom with sp 2 The hybr...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/66C08G18/48C08G18/34C08G18/32C08K9/12C08K3/08C08K3/04C08J5/18C08L75/14
CPCC08G18/3206C08G18/348C08G18/4833C08G18/6692C08G18/672C08J5/18C08J2375/14C08K3/08C08K9/12C08K2003/0806C08K3/042
Inventor 杨建军盛锡慧焘子吴庆云吴明元张建安刘久逸
Owner ANHUI UNIVERSITY
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