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Recyclable antibacterial waterborne epoxy resin coating and preparation method thereof

A water-based epoxy resin and antibacterial coating technology, which is applied in epoxy resin coatings, antifouling/underwater coatings, coatings, etc., can solve the problems of less cycle times, short action periods, and poor antibacterial effects, and achieve cycle The effect of high frequency

Active Publication Date: 2022-01-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the shortcomings of the existing water-based antibacterial coatings, such as poor antibacterial effect, short action period, and few cycle times, and proposes a new type of high-efficiency recyclable antibacterial water-based epoxy resin coating preparation method

Method used

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  • Recyclable antibacterial waterborne epoxy resin coating and preparation method thereof
  • Recyclable antibacterial waterborne epoxy resin coating and preparation method thereof
  • Recyclable antibacterial waterborne epoxy resin coating and preparation method thereof

Examples

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preparation example Construction

[0030] Preparation of antibacterial photosensitizer:

[0031] (1) Add polyglutamic acid to deionized water and make 400g of 10wt% aqueous solution, add 3g of zinc oxide and 3g of copper oxide in the prepared aqueous solution, add 4g of sulfuric acid while stirring, and take the supernatant after standing for subsequent use;

[0032] (2) 5g of nano-titanium dioxide is added to 10wt% aqueous solution of 500g of ethanol, stirred and added with 0.5g of silane coupling agent KH-550, then heated to 70°C, kept for 2h, then centrifuged, and cleaned with deionized water to obtain improved Titanium dioxide;

[0033] (3) Add 3 g of modified titanium dioxide to 300 g of the supernatant prepared in step (1), and react at 50° C. for 2 h to obtain an antibacterial photosensitizer.

Embodiment 1

[0035]Preparation of water-based antibacterial coating: take 7g of water-based epoxy resin emulsion, 0.1g of polypropylene glycol diglycidyl ether and 0.1g of antibacterial photosensitizer and blend them, then stir at a speed of 1000r / min for 10min through a disperser to obtain a mixed solution 1. Take 1 g of modified styrene-acrylic emulsion and 0.5 g of methylenebisacrylamide saturated solution and stir at a speed of 200 r / min for 10 min to obtain mixed solution 2. After blending mixed solution 1 and mixed solution 2, add 1.3 g of deionized water at 800 r / min. After stirring at a speed of 10 min / min, water-based antibacterial coatings were obtained.

[0036] Preparation of paint film: Take 2g of prepared water-based antibacterial coating and 1.4g of water-based epoxy resin curing agent, stir in a beaker at a speed of 500r / min for 30min at room temperature, and spread evenly on the polished iron plate to ensure the thickness At 100±5μm.

Embodiment 2

[0038] Preparation of water-based antibacterial coating: take 7.5g of water-based epoxy resin emulsion, 0.1g of polypropylene glycol diglycidyl ether and 0.1g of antibacterial photosensitizer and blend them, then stir at a speed of 1000r / min for 10min through a disperser to obtain a mixed solution 1. Take 1.15g of modified styrene-acrylic emulsion and 0.5g of saturated methylenebisacrylamide solution and stir at a speed of 200r / min for 10min to obtain mixed solution 2. After blending mixed solution 1 and mixed solution 2, add 1.15g of deionized water to After stirring at a speed of 800r / min for 10min, a water-based antibacterial coating was obtained.

[0039] Preparation of paint film: Take 2g of prepared water-based antibacterial coating and 1.5g of water-based epoxy resin curing agent, stir in a beaker at a speed of 500r / min for 30min at room temperature, and spread evenly on the polished iron plate to ensure the thickness At 100±5μm.

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Abstract

The invention belongs to the field of water-based coatings, and particularly relates to a recyclable photocatalytic antibacterial water-based epoxy resin coating and a preparation method thereof. On the basis of a water-borne epoxy resin emulsion, a compatilizer polypropylene glycol diglycidyl ether is added to enable an efficient antibacterial photosensitizer to be fully dispersed in the water-borne epoxy resin emulsion, an excellent sterilization effect can be achieved when a trace amount is added, the defect that most antibacterial agents are prone to failure is overcome through the principles of chelate formation and photocatalysis, and the characteristic of reusability is achieved. By adding a water-resistant agent, the medium resistance and physical properties of a paint film are adjusted, the water-based antibacterial coating with various excellent properties is obtained, and the coating can still keep an excellent sterilization effect when the barrier property of a coating layer fails.

Description

technical field [0001] The invention belongs to the field of water-based coatings, and in particular relates to a novel high-efficiency recyclable photocatalytic antibacterial water-based epoxy resin coating and a preparation method thereof. Background technique [0002] With the gradual improvement of people's environmental protection awareness and social environmental protection needs, a series of products in the past chemical industry are facing replacement due to raw materials and additives that are not friendly to the human body and the environment, and poor performance. And with the gradual improvement of people's living standards, people pay more and more attention to health issues, but we inevitably come into contact with various bacteria and viruses in our daily life. Some bacteria or viruses will become pathogens and cause human infection. Serious hazard to health. In order to solve such problems and improve the quality of life, we urgently need to apply green pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/14
CPCC09D163/00C09D5/14C08K2003/2241C08K2003/3045C08K2201/011C08L71/02C08K9/12C08K9/06C08K3/22C08K3/30
Inventor 郑玉婴宋驰
Owner FUZHOU UNIV
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