Biological nanometer aqueous antibiotic lacquer and its preparation method

A bio-nano, water-based technology, applied in biocide-containing paints, anti-fouling/underwater coatings, coatings, etc., can solve the problems of difficult control of the dispersion of nano-silver and nano-titanium dioxide, low antibacterial efficacy, and low durability , to achieve good green environmental protection effect, excellent green antibacterial, low processing cost

Inactive Publication Date: 2006-07-12
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. At present, nano-silver and nano-titanium dioxide are adsorbed and embedded on the porous carrier, and then added to the material, which not only increases the process cost and complexity, but also the dispersion of nano-silver and nano-titanium dioxide on the carrier is not easy to control , the actual antibacterial efficacy is low
[0007] 3. The concept is confused. Silver ions or nano-inorganic antibacterial agents containing silver ions are called nano-silver. In fact, the bactericidal principle of silver ions is different from that of nano-elemental silver. Nano-elemental silver is contact sterilization, while Silver ions need to be released from the material and penetrate into the cells to kill bacteria, so the endurance is low
In addition, this photoautocatalytic reaction can only occur under the irradiation of ultraviolet light. At the same time, water and oxygen are consumed, and organic materials will be degraded. At the same concentration, the sterilization efficiency is not as good as that of nano silver, and the application is also limited by environmental conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] The present invention also provides a kind of preparation method of bionano water-based antibacterial varnish, it comprises the steps:

[0063] 1) uniformly mixing the nano-silver dispersion and the nano-titanium dioxide dispersion, adding a reducing stabilizer;

[0064] 2) Add the nano-alumina powder with an average particle size of 10-30 nanometers into an appropriate amount of natural insect repellent solution, vibrate at 30-40°C for 2-3 hours, heat up and distill under reduced pressure, and remove the solvent to obtain nano-alumina as Carrier of insect repellent;

[0065] 3) Add water, wetting agent and defoamer to the natural vegetable emulsion while stirring, and stir at a speed of 600-800rpm for 10-15 minutes to obtain a mixture;

[0066] 4) Add nano-silver / nano-titanium dioxide dispersion, insect repellant, dispersant, thickener, film-forming aid, modifier, curing agent, leveling agent and drier to the mixture obtained in step 3) , stirring at a speed of 1000-...

Embodiment 1

[0069] Embodiment one: be used for the bionano water-based antibacterial varnish of woodware

[0070] Its formula composition (W / W):

[0071] water 40%

[0072] Rubber tree latex 15%

[0073] Sumac Latex 20%

[0074] Nano silver 50ppm

[0075] Nano titanium dioxide 50ppm

[0076] Insect repellent 0.05%

[0077] Dispersant 1.5%

[0078] Humectant 0.5%

[0079] Defoamer 0.5%

[0080] Thickener 0.5%

[0081] Coalescent 5%

[0082] Modifier 5%

[0083] Curing agent 5%

[0084] Leveling agent 0.2%

[0085] Reducing Stabilizer 0.8%

[0086] Drier 6%

[0087] The preparation method of the bionano water-based antibacterial varnish for woodware is:

[0088] (1) uniformly mixing the nano-silver dispersion and the nano-titanium dioxide dispersion, adding a reducing stabilizer;

[0089] (2) Add the nano-alumina powder with an average particle size of 10-30 nanometers into an appropriate amount of natural insect repellent solution, shake at 30-40°C for 2-3 hours, heat up an...

Embodiment 2

[0094] Embodiment two: be used for the bionano water-based antibacterial varnish of floor

[0095] Its formula composition (W / W):

[0096] water 28%

[0097] Sumac Latex 35%

[0098]Nano silver 100ppm

[0099] Nano titanium dioxide 100ppm

[0100] Insect repellent 0.1%

[0101] Dispersant 3%

[0102] Humectant 1%

[0103] Defoamer 1%

[0104] Thickener 1%

[0105] Coalescent 4%

[0106] Modifier 5%

[0107] Curing agent 5%

[0108] Leveling agent 0.4%

[0109] Reduced Stabilizer 1.5%

[0110] Drier 3%

[0111] Wear agent 12%

[0112] The preparation method of the bionano water-based antibacterial varnish for floor is:

[0113] (1) uniformly mixing the nano-silver dispersion and the nano-titanium dioxide dispersion, adding a reducing stabilizer;

[0114] (2) Add nano-alumina powder with an average particle size of 10-30 nanometers into an appropriate amount of natural insect repellent solution, shake at 30-40°C for 2-3 hours, heat up and distill under reduced pr...

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Abstract

The invention relates to a biology nanometer water antibiotic varnish which mainly uses natural plant juice and water as raw material and uses nanometer silver and nanometer titanium dioxide as antiseptic antibiosis component. The natural plant juice at least comprises one of the arbor, arboreta and rubber tree produced juice. It also relates to a method for preparing for the biology nanometer water antibiotic varnish.

Description

【Technical field】 [0001] The invention relates to a water-based antibacterial varnish and a preparation method thereof, in particular to a bionano water-based antibacterial varnish and a preparation method thereof. 【Background technique】 [0002] Traditional wood paints are solvent-based paints. Due to the large amount of volatile solvents used, volatile organic compounds (VOCs) will be produced during production and use, especially some benzene-containing organic compounds, which are easy to damage human nerves, mucous membranes, skin, liver and The trachea can cause damage and even cancer. Water-based wood lacquers have been used in western countries for a long time, and their low VOC value and low odor are very popular in the market. In terms of quality, some indicators of water-based wood lacquers have reached or approached the technical requirements of solvent-based products. The water-based floor coatings in Nordic countries have reached 80%. Water-based color paint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/14C09D201/00
Inventor 杜磊李荣先陈丽琼李成丰
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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