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A long-acting photosensitive slow-release antibacterial coating and preparation method thereof

An antibacterial coating and photosensitive technology, which is applied in the field of coatings, can solve the problems of coating antibacterial function failure, antibacterial agents passing quickly, and antibacterial agents dissolving quickly, etc., and achieve the effects of strong water binding ability, easy operation, and simple preparation process

Active Publication Date: 2022-02-01
广东施彩新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the antibacterial agent dissolves quickly and has high toxicity; on the other hand, the antibacterial agent passes away quickly, and the antibacterial function of the coating fails quickly.

Method used

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  • A long-acting photosensitive slow-release antibacterial coating and preparation method thereof
  • A long-acting photosensitive slow-release antibacterial coating and preparation method thereof
  • A long-acting photosensitive slow-release antibacterial coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve 10 parts by weight of 2-octyl-4-isothiazolin-3-one in 90 parts by weight of ethyl acetate to prepare an antibacterial agent solution, add 10 parts by weight of porous molecular sieves, magnetically stir for 30min, and turn to vacuum In the oven, reduce the air pressure of the vacuum box to below 0.1MPa, take it out after standing for 30min, centrifuge to separate the precipitate, put it in a 60°C oven and dry it for 12h, repeat the above steps 3 times to obtain saturated filled 2-octyl- 4-isothiazolin-3-one@porous molecular sieve; 10 parts by weight of azobenzene bridged pyridine salt is dissolved in 40 parts by weight of pure water to prepare a hydrogel solution, and 10 parts by weight of 2-octyl-4 - Isothiazolin-3-one@porous molecular sieve was added to the hydrogel solution, stirred by magnetic force for 30 minutes, left to stand for 30 minutes, and dried at room temperature for 16 hours to obtain a photosensitive slow-release antibacterial agent. Among them...

Embodiment 2

[0024] Dissolve 20 parts by weight of carbendazim in 90 parts by weight of ethyl acetate to prepare an antibacterial solution, add 15 parts by weight of a metal-organic framework compound, stir magnetically for 60 minutes, transfer to a vacuum box, and drop the vacuum box pressure To below 0.1MPa, take it out after standing for 30min, centrifuge to separate the precipitate, put it in an oven at 80°C and dry it for 6h, repeat the above steps 3 times to get saturated filled carbendazim@metal-organic framework; take 15 parts by weight The azophenyl polyamide resin was dissolved in 50 parts by weight of purified water to prepare a hydrogel solution, and 15 parts by weight of carbendazim@metal-organic framework compound was added to the hydrogel solution, magnetically stirred for 30min, and left to stand 30min, and dry at room temperature for 24h to obtain the photosensitive slow-release antibacterial agent. Wherein, the azophenyl polyamide resin has an azobenzene structure grafted...

Embodiment 3

[0027] 12 parts by weight of pyrithione are zinc-dissolved in 90 parts by weight of ethyl acetate to prepare an antibacterial agent solution, add 8 parts by weight of porous activated carbon, stir magnetically for 30 minutes, transfer to a vacuum box, and reduce the air pressure of the vacuum box to 0.1 Below MPa, take it out after standing for 30 minutes, centrifuge to separate the precipitate, put it in a 60°C oven and dry it for 12 hours, repeat the above steps 3 times to get saturated filled zinc pyrithione@porous activated carbon; take 8 parts by weight of azo Dissolve phenylbridged bipyridyl salt in 40 parts by weight of purified water to prepare a hydrogel solution, add 12 parts by weight of zinc pyrithione@porous activated carbon into the hydrogel solution, stir magnetically for 30 minutes, let stand for 30 minutes, and dry at room temperature 24h, the obtained photosensitive slow-release antibacterial agent. Among them, the azobenzene bridged pyridinium salt is a comp...

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PUM

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Abstract

The invention discloses a long-acting photosensitive slow-release antibacterial coating, which comprises a film-forming agent, an inorganic filler, a photosensitive slow-release antibacterial agent, a cosolvent, a pH regulator and pure water. The photosensitive slow-release antibacterial agent uses a cage-like substance as a carrier, absorbs and fills the antibacterial agent under low pressure, and then dips and coats a photosensitive gel agent to seal the outlet of the cage-like substance. The invention utilizes the sensitivity of the photosensitive gel to light or temperature to effectively control the opening and closing of the outlet of the cage-like carrier material, so that the antibacterial agent adsorbed in the cage-like carrier can be released quantitatively, thereby achieving the preparation of low-toxicity, long-acting Antimicrobial coating purpose. In addition, the photosensitive gel itself has a strong ability to bind water, and can firmly bind the surface of the water-based paint without adding it to the inner layer, so as to better reflect the photosensitive antibacterial effect. The long-acting photosensitive slow-release antibacterial coating provided by the invention has low toxicity, long-lasting antibacterial properties, environmental protection, simple preparation process and easy operation.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a long-acting photosensitive slow-release antibacterial coating and a preparation method thereof. Background technique [0002] Most of the current antibacterial coatings use chlorfenapyr, zinc pyrithione, chlorothalonil, diuron and other drugs, which are directly mixed into the coating to achieve the purpose of antibacterial and antivirus. However, the biggest hidden danger of this method is that antibacterial drugs are easy to dissolve, easy to be poisoned by contact, or easy to enter the air, resulting in pollution. Now European and American countries have very strict requirements on this type of antibacterial coating. On the one hand, the antibacterial agent dissolves quickly and has high toxicity; on the other hand, the antibacterial agent passes away quickly, and the antibacterial function of the coating fails quickly. [0003] The ideal antibacterial coating is to release the age...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/14C09D5/14C09D7/61C09D133/04C09D175/04
CPCC09D125/14C09D133/04C09D175/04C09D5/14C09D7/61C08K9/12C08K7/26C08K5/46C08K5/3432C08K3/40C08K13/06C08L87/00C08L77/00C08K5/3445C08K7/24C08K5/378
Inventor 叶邦君谢冠群王小霞钟小秋
Owner 广东施彩新材料科技有限公司