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Method for preparing antibacterial coating by mugwort

An antibacterial and coating technology, which is applied in the field of preparation of antibacterial coatings from mugwort, can solve problems such as the unstable efficacy duration of mugwort essential oil, and achieve the effect of improving antibacterial persistence and antibacterial properties

Inactive Publication Date: 2016-10-12
CHENGDU YICHUANGSI BIOLOGICAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the instability of mugwort essential oil, the duration of its medicinal effect is short, which limits its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The method for preparing the antibacterial paint by adopting mugwort comprises the following process steps:

[0023] 1) Preparation of coagulated mugwort oil: Prepare 100-150ml of xanthan gum aqueous solution with a mass concentration of 5.6-6.4% and arabic gum aqueous solution with a mass concentration of 5.8-6.6%, respectively, and mix the two solutions; mix 8.3 ~9.6g mugwort oil is added to the above two mixed solutions, under the conditions of stirring speed 650~800r / min and temperature 44~48°C, stir for 48~62min to obtain mugwort oil emulsion; to the obtained mugwort oil Add 55-73ml of water to the emulsion, and stir for 58-64min at a stirring speed of 550-650r / min to obtain a mugwort oil emulsion dilution; adjust the pH value of the obtained mugwort oil emulsion dilution to 3.8- 5.2 Obtain the pre-polymerization solution; under the condition of stirring speed of 550-650r / min, the temperature of the obtained pre-polymerization solution is naturally lowered to 8-12°...

Embodiment 2

[0027] This embodiment is further optimized on the basis of the above-mentioned embodiments. In order to better realize the present invention, the emulsifier described in step 2) is composed of anionic sodium dodecylbenzenesulfonate and nonionic alkylphenol polyoxygen Vinyl ether is mixed according to the weight ratio of 4-5:1.

Embodiment 3

[0029] This embodiment is further optimized on the basis of any of the above-mentioned embodiments. In order to better realize the present invention, the nanomaterials described in step 2) are nano-zinc oxide, nano-iron oxide, nano-magnesia, and nano-zirconia. Any one of them, or a mixture of two or more.

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Abstract

The invention discloses a method for preparing antibacterial coating by mugwort, mugwort oil is used for microcapsule coating, solid mugwort oil is prepared and used in a core layer and a shell layer of core-shell emulsion polymerization, a cross-linking agent is used for core-shell cross linking, the mugwort oil is controlled to release slowly, and nanometer materials and a cationic emulsifier are used for enhancing the antibacterial effect. The method for preparing the antibacterial coating by the mugwort solves the technical problems that the mugwort oil is coated, the solid mugwort oil is formed and and used in the core layer and the shell layer of core-shell type acrylic resin, the nanometer materials, the cationic emulsifier and a natural antibacterial agent are used for achieving a synergistic effect, the mugwort oil is controlled to release slowly, and the antibacterial property of the acrylic resin is improved.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a method for preparing an antibacterial paint by using mugwort. Background technique [0002] Mugwort is a perennial wild herb of the genus Artemisia in the family Asteraceae. There are many kinds of physiologically active components of mugwort essential oil extracted from it, many of which have antibacterial activity of monoterpenes and sesquiterpenoids. As a natural and environmentally friendly Antibacterial and antifungal agent, in line with people's green consumption concept. However, due to the instability of mugwort essential oil, the duration of its medicinal effect is short, which limits its application. The microcapsule technology coats the essential oil to release it slowly through the capsule wall, improving the pressure sensitivity, photosensitivity and heat sensitivity of mugwort essential oil, and improving product grade and added value. [0003] As a common...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C09D105/00C09D191/00C09D5/14C08F220/28C08F220/18C08F220/14
CPCC08F220/28C08F220/281C08K2201/011C08L2205/025C08L2205/035C08L2207/53C08L2312/00C09D5/14C09D7/61C09D133/14C08L5/00C08L91/00C08K2003/2296C08K2003/2272C08K2003/222C08K2003/2227C08K2003/2244C08F220/18C08F220/14
Inventor 周洁
Owner CHENGDU YICHUANGSI BIOLOGICAL SCI & TECH
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