Bio-based antibacterial coating and preparation method thereof

An antibacterial coating and bio-based technology, applied in the field of coatings, can solve problems such as poor heat resistance and coating failure, and achieve the effects of overcoming poor heat resistance, improving binding force, and wide source of materials

Active Publication Date: 2019-05-17
SHENYANG SHUNFENG IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial coating of the present invention is a comprehensive antibacterial coating that integrates sterilization and antibacterial. It has good antibacterial properties, stable chemical properties, and good heat resistance, which can overcome the traditional bio-based antibacterial coatings. The disadvantages of coating failure caused by a series of problems caused by poor thermal performance

Method used

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  • Bio-based antibacterial coating and preparation method thereof
  • Bio-based antibacterial coating and preparation method thereof
  • Bio-based antibacterial coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Synthesis of "triple antibacterial effect" antibacterial macromolecules.

[0024] Take 120ml DMSO as the reaction solution and place it in a 250ml three-necked flask. With the stirrer turned on (rotating speed 180r / min), add 9g of DL-tartar, add 2g of p-benzenesulfonic acid as a catalyst, and cool down to 0°C in an ice water bath. Then add 6 g of sulfaguanidine, react for 3 hours at room temperature, then filter, wash with deionized water three times, and dry the product in a vacuum drying oven to obtain a white powder sample.

[0025] ② Take 100ml N,N-dimethylformamide (DMF) as the reaction solution and place it in a 250ml three-necked flask. With the stirrer turned on (rotating speed 150r / min), add 5g of the white powder sample and thionyl chloride 1.2g, heated to 110°C, then added 6g of glycitein, stirred for 4h, took out the reaction solution, washed with methanol and deionized water for 3-4 times, and dried in a vacuum drying oven to obtain the "triple antibacteria...

Embodiment 2

[0029] (1) Synthesis of "triple antibacterial effect" antibacterial macromolecules.

[0030] Take 120ml DMSO as the reaction solution and place it in a 250ml three-necked flask. With the stirrer turned on (rotating speed 180r / min), add 9g of DL-tartar, add 2g of p-benzenesulfonic acid as a catalyst, and cool down to 0°C in an ice water bath. Then add 6 g of sulfaguanidine, react for 3 hours at room temperature, then filter, wash with deionized water three times, and dry the product in a vacuum drying oven to obtain a white powder sample.

[0031] ② Take 100ml N,N-dimethylformamide (DMF) as the reaction solution and place it in a 250ml three-necked flask. With the stirrer turned on (rotating speed 150r / min), add 5g of the white powder sample and thionyl chloride 1.2g, heated to 110°C, then added 6g of glycitein, stirred for 4h, took out the reaction solution, washed with methanol and deionized water for 3-4 times, and dried in a vacuum drying oven to obtain the "triple antibacteria...

Embodiment 3

[0035] (1) Synthesis of "triple antibacterial effect" antibacterial macromolecules.

[0036] Take 120ml DMSO as the reaction solution and place it in a 250ml three-necked flask. With the stirrer turned on (rotating speed 180r / min), add 9g of DL-tartar, add 2g of p-benzenesulfonic acid as a catalyst, and cool down to 0°C in an ice water bath. Then add 6 g of sulfaguanidine, react for 3 hours at room temperature, then filter, wash with deionized water three times, and dry the product in a vacuum drying oven to obtain a white powder sample.

[0037] ② Take 100ml N,N-dimethylformamide (DMF) as the reaction solution and place it in a 250ml three-necked flask. With the stirrer turned on (rotating speed 150r / min), add 5g of the white powder sample and thionyl chloride 1.2g, heated to 110°C, then added 6g of glycitein, stirred for 4h, took out the reaction solution, washed with methanol and deionized water for 3-4 times, and dried in a vacuum drying oven to obtain the "triple antibacteria...

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Abstract

The invention discloses bio-based antibacterial coating and a preparation method thereof. The bio-based antibacterial coating is characterized by being prepared from the following components: an antibacterial macromolecule, waterborne epoxy emulsion, a de-foaming agent, an antioxidant, a waterborne curing agent and de-ionized water, wherein the antibacterial macromolecule is prepared through covalent bonding of sulfaguanidine, DL-tartaric acid and glycitin; then the antibacterial macromolecule is grafted on an epoxy resin matrix to form the bio-based antibacterial coating. The bio-based antibacterial coating prepared by the method integrates sterilization and bacterium inhibition and has relatively good antibacterial performance, stable chemical performance and relatively good heat-resisting performance; and the defect that a coating layer becomes invalid, caused by a series of problems of poor heat-resisting performance of traditional bio-based antibacterial coating, can be overcome.

Description

Technical field [0001] The invention relates to the technical field of coatings, in particular to a multiple bio-based environmentally-friendly antibacterial coating with good bonding force to a substrate, good antibacterial effect, non-toxic and environmentally friendly, wide raw material sources, and low price. Background technique [0002] Microorganisms will corrode the coating by forming plaque, causing the coating to lose its adhesion, thus losing the protection and modification of the substrate. When it grows in large quantities, it will expose people to a multi-bacterial environment, which is harmful to humans. Health hazards, antibacterial coatings with antibacterial agents added to the coating can effectively inhibit and kill sterilization and avoid the above-mentioned negative effects. [0003] At present, the antibacterial agents in antibacterial coatings are mainly divided into three categories: inorganic antibacterial agents, organic antibacterial agents and natural a...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/14C08G83/00
Inventor 刘春峰葛晶于海舒沙世强陈栋
Owner SHENYANG SHUNFENG IND GRP CO LTD
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