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Environment-friendly antibacterial latex paint and preparation method thereof

A latex paint, environmentally friendly technology, applied in the field of paint

Inactive Publication Date: 2018-03-06
SHENYANG SHUNFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on the simultaneous application of aloin, cinnamaldehyde and allicin in the field of coatings. Therefore, developing an environmentally friendly antibacterial latex paint containing aloin, cinnamaldehyde and allicin has become an urgent problem to be solved

Method used

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  • Environment-friendly antibacterial latex paint and preparation method thereof
  • Environment-friendly antibacterial latex paint and preparation method thereof
  • Environment-friendly antibacterial latex paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare a kind of method for environment-friendly antibacterial latex paint, concrete preparation steps are as follows:

[0027] Step 1, cinnamaldehyde modification: take 1.5g cinnamaldehyde and 1 g paraformaldehyde dissolved in 100 ml absolute ethanol, adjust the pH to 2 with HCl, raise the temperature to 70°C, add 2.3 g anhydrous zinc chloride, stir (320r / min) After 4 hours, add 2.5 g of formic acid and 1.2 g of aluminum trichloride, and continue the reaction for 2.5 hours. The reaction solution was extracted four times with diethyl ether, the organic phases were combined, dried with 4.8 g of anhydrous sodium sulfate, filtered, spin-dried with diethyl ether, and vacuum-dried at 80°C for 8 h to obtain the target product, ie, acetoxycinnamaldehyde.

[0028] Step 2, allicin modification: 4.2 g KMnO 4 Dissolve it in 200 ml of water, add it to a 500 ml three-neck flask, adjust the pH of the solution to 2 with HCl, add 3.5 g of allicin while stirring (240 - 380 r / min) (0.5...

Embodiment 2

[0032] Table 1 and Table 2 are the antibacterial performance indexes of the macromolecular antibacterial agent synthesized by the present invention and each component. The detection of the inhibition zone is determined by agar diffusion test, and the minimum antibacterial concentration (MIC) is determined by the double dilution method.

[0033]

[0034] (Note: The concentration of each antibacterial substance used to test the diameter of the inhibition zone in Table 1 is 0.5g / ml, "-" means no obvious effect, CNC is a combination of aloin, cinnamaldehyde and allicin antibacterial macromolecules; ACO is aloe vera glucoside, cinnamaldehyde and oregano oil; AAO is a combination of aloin, allicin and oregano oil; CAO is a combination of cinnamaldehyde, allicin and oregano oil).

[0035]

[0036](Note: "-" in Table 2 means no obvious effect; CNC is a combination of aloin, cinnamaldehyde and allicin antibacterial macromolecule; ACO is a combination of aloin, cinnamaldehyde and o...

Embodiment 3

[0041] Example 3. Comparison of antibacterial effects of different latex paints.

[0042] The prepared antibacterial latex paint of comparative example 1 and the antibacterial performance of common antibacterial paint, concrete results are shown in the following table:

[0043]

[0044] (Note: The organic quaternary ammonium salt antibacterial coating in Table 4 is the coating prepared by adding 3% quaternary ammonium salt antibacterial agent; inorganic Ag + Antibacterial coating is added with 3%Ag + coatings prepared with antimicrobial agents)

[0045] It can be seen from Table 4 that the CNC environmental protection antibacterial coating is superior to other coatings in terms of antibacterial performance and durable antibacterial performance.

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PUM

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Abstract

The invention belongs to the field of coating and particularly relates to environment-friendly antibacterial latex paint and a preparation method thereof. The antibacterial latex paint is prepared bythe following steps: bonding 4-6 weight parts of aloin (ALN) with 3-5 weight parts of cinnamyl aldehyde (CMD) and 1-3 weight parts of allicin (ACN) through chemical bonds, and compounding with 50-70 weight parts of emulsion. The antibacterial effect of the latex paint is remarkably enhanced, the dispersity and compatibility of an antibacterial agent in an emulsion substrate are effectively improved, and the defect of difference in the antibacterial effect at different parts of a coating due to the poor dispersity of common antibacterial filler is solved while the shortcoming of mechanical property decline of the coating caused by low compatibility between the antibacterial filler and the substrate is overcome.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to an environment-friendly and antibacterial latex paint and a preparation method thereof. Background technique [0002] With the development of social economy, people's requirements for living environment are getting higher and higher. However, on the surface of walls in humid environments such as rainy areas in the south, microorganisms such as mold are very easy to grow, which not only endangers human health, but also affects the actual use value of the wall or causes surface degeneration. Coating antibacterial technology has many unique advantages and is the most economical and widely used effective protection method. However, the current antibacterial coatings use organic quaternary ammonium salt antibacterial agents or inorganic Ag + The majority of antibacterial agents not only have limited antibacterial effect, but also are not environmentally friendly, and have a great impact on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D125/14C09D131/04C09D5/14C09D5/02
Inventor 付琬璐朱进军史胜南王杨松高萌李娜
Owner SHENYANG SHUNFENG NEW MATERIAL CO LTD
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