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Efficient antibacterial environment-friendly coating and preparation method thereof

A technology of antibacterial coatings and environmentally friendly coatings, applied in the field of high-efficiency and environmentally friendly antibacterial coatings and their preparation, can solve the problems of untargeted application of cinnamic acid and kaempferol, etc., and achieve the effects of prolonging service life, lasting antibacterial ability, and wide sources

Inactive Publication Date: 2020-05-12
SHENYANG SHUNFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there is currently no targeted application of cinnamic acid and kaempferol in coatings

Method used

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  • Efficient antibacterial environment-friendly coating and preparation method thereof
  • Efficient antibacterial environment-friendly coating and preparation method thereof
  • Efficient antibacterial environment-friendly coating and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0032] A kind of preparation method of high-efficiency antibacterial environmental protection paint, specifically comprises the following steps:

[0033] Add 5-10 parts of pH adjuster to 20-30 parts of deionized water, stir for 5-10 minutes at a stirring rate of 300-500r / min; increase the stirring rate to 800-1000r / min, and add 20-30 parts of cinnamic acid in turn Kaempferol ester, 1-5 parts of wetting agent, 5-10 parts of titanium dioxide and 20-30 parts of calcium carbonate; again increase the stirring speed to 1800-2000r / min, stir for 15-20min; reduce the stirring speed to 1000-1200r / min min, add 80-100 parts of water-based acrylic emulsion and 2-6 parts of film-forming aid in sequence, and stir for 10-15 minutes to obtain an environmentally friendly antibacterial coating.

[0034] The above-mentioned stirring rate has been changed many times. The inventor found in the experiment that the multiple changes of the stirring rate can make the different components mix more fully...

Embodiment 1

[0044]Step 1: Preparation of Cinnamoyl Chloride

[0045] (1) Put 10 parts of cinnamic acid into an anhydrous and dry 25ml round bottom flask, add 10 parts of anhydrous and dry DCM, and add dry and anhydrous magnetons;

[0046] (2) Sonicate in an ultrasonic cleaner until there is no solid on the surface, place it on a magnetic stirrer, and add 4ml of PCl under stirring in a ventilated place 3 ;

[0047] (3) React under stirring at room temperature until it becomes a yellow, clear and transparent liquid. 2 ) in a rotary evaporator at 30°C to dryness under reduced pressure to obtain cinnamoyl chloride.

[0048] Step 2: Preparation of environment-friendly antibacterial agent

[0049] (1) In a 10ml round bottom flask, add 10 parts of kaempferol and dissolve with 2 parts of anhydrous tetrahydrofuran;

[0050] (2) Add 10 parts of cinnamoyl chloride and 2 parts of triethylamine under ice bath conditions;

[0051] (3) After adding, stir and react at room temperature for 2 h, and d...

Embodiment 2

[0058] Step 1: Preparation of Cinnamoyl Chloride

[0059] Same as Example 1

[0060] Step 2: the preparation of kaempferol cinnamate:

[0061] (1) In a 10ml round bottom flask, add 10 parts of kaempferol and dissolve with 2 parts of anhydrous tetrahydrofuran;

[0062] (2) Add 20 parts of cinnamoyl chloride and 4 parts of triethylamine under ice bath conditions;

[0063] (3) After adding, stir and react at room temperature for 2 h, and distill THF under reduced pressure after the reaction finishes;

[0064] (4) Add 3 parts of water, extract three times with 2 parts of dichloromethane, anhydrous NaSO 4 Dry and concentrate to obtain kaempferol cinnamate.

[0065] Step three:

[0066] (1) Control the stirring rate to 300-500rmp, add 25 parts of deionized water and 8 parts of AMP-95PH regulator in turn to the stirrer, and stir for 5-10min;

[0067] (2) Then increase the speed to 800-1000r / min, add 25 parts of kaempferol cinnamate environmental protection antibacterial agents,...

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Abstract

The invention provides an environment-friendly antibacterial coating and a preparation method thereof provided thereof. According to the invention, kaempferol cinnamate is generated through a reactionof cinnamoyl chloride and kaempferol, so the coating has certain viscosity and thixotropy, and the phenomenon of sagging during construction is prevented; meanwhile, water-soluble ester with antibacterial ability has good compatibility with a water-based acrylic emulsion, so an antibacterial agent is uniformly dispersed in the coating, the coating is allowed to have long-lasting antibacterial ability, and the service life of the coating is prolonged; cinnamic acid has the fragrance of cassia bark and can purify indoor air; the antibacterial coating belongs to green and environment-friendly coatings, and has the advantages of no toxicity, no harm, environmental friendliness, wide sources and the like; and in the preparation process of the environment-friendly antibacterial coating, the method of adjusting a stirring speed multiple times is adopted for preparation, so the prepared coating is more stable.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a high-efficiency, environment-friendly and antibacterial paint and a preparation method thereof. Background technique [0002] Antibacterial coatings can effectively reduce the bacterial density of furniture and other items and optimize people's living environment. Therefore, the development of antibacterial coatings has become an inevitable development trend. At present, the research on antibacterial coatings has problems of compatibility between antibacterial materials and coatings and environmental safety. [0003] Natural cinnamic acid is mainly extracted and separated from traditional Chinese medicine cinnamon and aromatic resins. It generally exists in natural organic matter in two forms: free state and compound state. The so-called cinnamic acid refers to the trans isomer containing carbon-carbon unsaturated bonds in the molecule. The compound has a...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D5/14C09D7/43C09D7/61C09D7/80C07C67/14C07C69/618
CPCC07C67/14C08K2003/2241C08K2003/265C09D5/14C09D133/04C09D7/43C09D7/61C09D7/80C08K5/1545C08K3/22C08K3/26C08K13/02C07C69/618
Inventor 葛晶史胜南付琬璐李娜王杨松于帅
Owner SHENYANG SHUNFENG NEW MATERIAL CO LTD
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