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Nanometer ZnO anti-bacterial and anti-fouling coating and method for preparing same

A nano-zinc oxide, zinc oxide modification technology, applied in antifouling/underwater coatings, polyester coatings, polyurea/polyurethane coatings, etc. Universal type, attenuation of antibacterial effect, etc., to achieve the effect of outstanding anti-fouling ability, high surface activation energy, and excellent weather resistance

Active Publication Date: 2012-01-04
南京南大波平电子信息有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to their special chemical structure and physical characteristics, these antibacterial agents often can only kill or inhibit one or one type of bacteria and fungi, so the antibacterial property is not universal, and the antibacterial effect will follow the decomposition of antibacterial agents, Aging and attenuation, the actual antibacterial effect and long-term antibacterial effect are not ideal

Method used

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  • Nanometer ZnO anti-bacterial and anti-fouling coating and method for preparing same
  • Nanometer ZnO anti-bacterial and anti-fouling coating and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 2g of diammonium hydrogen citrate in 158g of deionized water, start stirring, and slowly pour 40g of nano-zinc oxide particles with a particle size of 30nm into deionized water. After oscillating, the aqueous solution was poured into a Netzsch MiniCer grinder, controlled at a speed of 2500-3000 rpm, ground and stirred for 160 min, and then vacuum-dried until constant weight. Put 40g of dried surface-functionalized nano-zinc oxide, 3g of hypericin, 19.6g of methyl isobutyl ketone, and 17.1g of xylene into a Netzsch ShearMaster grinder, and grind and stir at a controlled speed of 250-350rpm , then add rosin 10g, acrylic resin 6.2g, commercially available epoxidized linseed oil Flexol LOE1.5g, commercially available MPA 2000X 0.6g, white carbon black 0.4g, oily dye 1.6g. Continue stirring for 70 minutes to obtain the nano zinc oxide antibacterial and antifouling coating.

Embodiment 2

[0041] Dissolve 2g of 1,2-dihydroxy-3,5-sodium disulfonate in 91g of deionized water, start stirring, slowly add 40g of nano-zinc oxide particles with a particle size of 30nm into deionized water and stir for 2 hours, then add 5g of Disperbyk190 Then ultrasonically oscillate for 4.5 hours under the ultrasonic instrument, then pour the oscillated aqueous solution into the NetzschMiniCer grinder, control the rotation speed at 2500-3000rpm, grind for 160min, and then vacuum dry until constant weight. Put 23.4g of dried surface-functionalized nano-zinc oxide, 1.5g of commercially available surfactant 5103, 1g of hypericum anthrone, and 40.4g of purified water into a Netzsch ShearMaster grinder, stir at a speed of 250-350rpm, and then add Hydroxyethyl cellulose 0.5g, water-soluble polyester-urethane resin 24g, dimethylaminoethanol (DMEA) 1g, hexamethoxymethylmelamine (HMMM) 6.3g, p-toluenesulfonamide 0.3g, water-soluble dye 1.6g , and stirred for 30 minutes to obtain the nanometer ...

Embodiment 3

[0043] Dissolve 2.4g of 2-(2-(2-methoxyethoxy)ethoxy)acetic acid in 14g of ethylene glycol isopropyl ether; after starting stirring, slowly add 40g of nano-zinc oxide particles with a particle size of 30nm Stir and mix for 30 minutes, then pour the zinc oxide slurry into an electronically controlled three-roller (EXAKT 80E), add 77g of ethanol while stirring, and then ultrasonically vibrate the nano-zinc oxide-ethanol solution under the ultrasonic instrument for 2.5 hours, and shake Finally, the nano-zinc oxide-ethanol solution was poured into the Netzsch MiniCer grinder at a speed of 2500-3000 rpm, grinded for 160 min, and then vacuum-dried until constant weight. Put 40 g of dried surface-functionalized nano-zinc oxide, 19.6 g of methyl isobutyl ketone, and 17.1 g of xylene into a Netzsch ShearMaster grinder, stir at a controlled speed of 250-350 rpm, add 10 g of rosin, and 6.2 g of acrylic resin in turn. g, commercially available Flexol LOE 1.5g, commercially available MPA 2...

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Abstract

The invention relates to nanometer ZnO anti-bacterial and anti-fouling coating and a method for preparing the same. The nanometer ZnO anti-bacterial and anti-fouling coating comprises the following components by weight portion: 20-60 portions of nanometer ZnO particles, 0-3 portions of ZnO modified additive, 0.5-3 portions of photosensitizer, 1.5-10 portions of binder, 15-30 portions of high polymer, 2-10 portions of additive, 30-50 portions of solvent and 90-160 portions of cosolvent. The ZnO modified additive is dissolved and stirred in the cosolvent; the nanometer ZnO particles are poured in the mixture; the new mixture is oscillated ultrasonically and then ground and dried to a constant weight to obtain surface-functionalized nanometer ZnO; and the photosensitizer, the binder, the high polymer and the additive are added and stirred to the surface-functionalized nanometer ZnO to obtain the nanometer ZnO anti-bacterial and anti-fouling coating. Compared with the prior art, the nanometer ZnO anti-bacterial and anti-fouling coating has anti-bacterial universality, outstanding anti-fouling ability and excellent weatherability and can be particularly applied to the ship, the transport, the school, the hospital and the construction industry on a large scale.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a nanometer zinc oxide antibacterial and antifouling coating and a preparation method thereof. Background technique [0002] Traditional antifouling coatings often contain a certain amount of heavy metal elements such as copper, iron, and vanadium, such as CN101245211. These metal elements are slowly released or migrated to the surface of the coating under the action of the surrounding environment, and undergo physical or chemical reactions, so that the coating has a good anti-pollution ability. In order to maintain the long-term performance of the anti-fouling properties, the active decay period of the metal in the coating is often longer than the aging period of the polymer binder in the coating. Therefore, as time goes by, there are metal particles falling off from the coating, polluting the surrounding environment. [0003] In addition, the antibacterial coating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D175/06C09D175/04C09D183/04C09D167/00C09D167/08C09D5/16C09D5/14C09C1/04C09C3/08C09C3/04
Inventor 胡益民汪洪梅东余
Owner 南京南大波平电子信息有限公司
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