CN113999590A - Powder coating with antibacterial function and preparation method thereof - Google Patents

Powder coating with antibacterial function and preparation method thereof Download PDF

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Publication number
CN113999590A
CN113999590A CN202111318356.6A CN202111318356A CN113999590A CN 113999590 A CN113999590 A CN 113999590A CN 202111318356 A CN202111318356 A CN 202111318356A CN 113999590 A CN113999590 A CN 113999590A
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powder coating
parts
ginkgo
antibacterial
agent
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陈锐波
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Jiangmen Huangzhou Industrial Co ltd
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Jiangmen Huangzhou Industrial Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/06—Coniferophyta [gymnosperms], e.g. cypress
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/03—Powdery paints
    • C09D5/033—Powdery paints characterised by the additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0806—Silver
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

Abstract

The invention relates to the technical field of powder coating preparation, and particularly discloses a powder coating with an antibacterial function and a preparation method thereof. The powder coating with the antibacterial function comprises the following components in parts by weight: 70-100 parts of epoxy resin; 30-60 parts of polyester resin; 20-40 parts of a filler; 0.5-3 parts of a composite antibacterial agent; 3-10 parts of a curing agent; 1-5 parts of a leveling agent; the composite antibacterial agent comprises nano silver and a ginkgo tree branch extract. After the composite antibacterial agent consisting of the nano silver and the ginkgo tree branch extract is added into the powder coating with the antibacterial function, the powder coating has the antibacterial effect on conventional bacteria, and particularly has the antibacterial effect on methicillin-resistant staphylococcus aureus.

Description

Powder coating with antibacterial function and preparation method thereof
Technical Field
The invention relates to the technical field of powder coating preparation, in particular to a powder coating with an antibacterial function and a preparation method thereof.
Background
The powder coating does not contain organic solvent, so that the pollution of volatile organic solvent is avoided, and the powder coating is widely applied in various fields; such as medical appliances, furniture, household appliances, machine equipment, automobile parts, and the like.
With the enhancement of health and environmental awareness of people, people not only need to be environment-friendly but also need to have an antibacterial function; therefore, the corresponding antibacterial powder coating also has wide market prospect. The Chinese invention patent CN113321992A discloses an antibacterial powder coating, which takes polyester resin and epoxy resin as composite raw materials, takes single nano-silver as an antibacterial agent, and is added with high-temperature resistant filler; therefore, the prepared antibacterial powder coating not only has antibacterial performance, but also has high temperature resistance. In further research, the inventor finds that the antibacterial coating has an antibacterial effect on conventional bacteria; but the antibacterial performance for some super bacteria is poor; such as methicillin-resistant Staphylococcus aureus. However, the superbacteria are easily transmitted in hospitals, causing nosocomial infections; therefore, the development of an antibacterial coating capable of resisting super bacteria has important significance for preventing the spread of the super bacteria.
Disclosure of Invention
In order to overcome the technical problems in the prior art, the invention provides a novel antibacterial fabric.
The technical scheme of the invention is as follows:
the powder coating with the antibacterial function comprises the following components in parts by weight:
70-100 parts of epoxy resin; 30-60 parts of polyester resin; 20-40 parts of a filler; 0.5-3 parts of a composite antibacterial agent; 3-10 parts of a curing agent; 1-5 parts of a leveling agent;
the composite antibacterial agent comprises nano silver and a ginkgo tree branch extract.
The inventor surprisingly found in the research that: after the composite antibacterial agent consisting of the nano silver and the ginkgo tree branch extract is added into the powder coating, the powder coating has an antibacterial effect on conventional bacteria, and particularly has an antibacterial effect on methicillin-resistant staphylococcus aureus.
Adding into powder coating prepared by taking epoxy resin and polyester resin as raw materials
Preferably, the weight ratio of the nano-silver to the ginkgo tree branch extract in the composite antibacterial agent is 1-3: 1.
Most preferably, the weight ratio of the nano-silver to the ginkgo biloba extract in the composite antibacterial agent is 2: 1.
Preferably, the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) putting the ginkgo branch powder into an organic solvent consisting of n-butyl alcohol and cyclohexane, and heating, refluxing and extracting for 2-3 h; after the extraction is finished, concentrating and drying the extracting solution to obtain the ginkgo branch extract.
Further preferably, the volume ratio of the n-butanol to the cyclohexane in the step (2) is 3-5: 1;
most preferably, the volume ratio of n-butanol to cyclohexane in step (2) is 4: 1.
Further preferably, the dosage ratio of the ginkgo branch powder to the organic solvent consisting of n-butanol and cyclohexane in the step (2) is 1g: 10-20 mL.
Most preferably, the ratio of the amount of the ginkgo biloba branch powder to the organic solvent consisting of n-butanol and cyclohexane in step (2) is 1g:15 mL.
The inventor further discovers in research that the preparation method of the ginkgo tree branch extract plays an important role in whether the composite antibacterial agent can play an excellent role in resisting methicillin-resistant staphylococcus aureus in powder coating. Researches show that the antibacterial effect of the ginkgo tree branch extract extracted by an organic solvent consisting of n-butanol and cyclohexane on methicillin-resistant staphylococcus aureus after being combined with nano-silver is far higher than the antibacterial effect of the ginkgo tree branch extract extracted by conventional ethanol or other solvents on methicillin-resistant staphylococcus aureus after being combined with nano-silver.
Preferably, said filler is selected from precipitated barium sulphate.
Preferably, the curing agent is adipic acid dihydrazide.
Preferably, the leveling agent is a leveling agent PV 88.
The invention also provides a preparation method of the powder coating with the antibacterial function, which is prepared by the following steps:
and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
Has the advantages that: the invention provides a powder coating with a brand-new composition and an antibacterial function; after the composite antibacterial agent consisting of the nano silver and the ginkgo tree branch extract is added into the powder coating with the antibacterial function, the powder coating not only has the antibacterial function on conventional bacteria, but also has the antibacterial function on methicillin-resistant staphylococcus aureus.
Detailed Description
The present invention is further explained with reference to the following specific examples, which do not limit the scope of the present invention.
In the following examples, the polyester resin is 9005-6-73 available from Kepler, Shandong; the epoxy resin adopts bisphenol A solid epoxy resin with the trademark of CYD-011(E-20) in the barban petrochemical production; the other raw materials without marked sources are conventional raw materials which can be purchased by the technicians in the field through conventional purchasing approaches; the source of the above raw materials of the present invention does not limit the scope of the present invention.
Example 1 preparation of powder coating having antibacterial function
The raw materials comprise the following components in parts by weight: 80 parts of epoxy resin; 40 parts of polyester resin; 30 parts of filler (precipitated barium sulfate); 1 part of a composite antibacterial agent; 5 parts of a curing agent (adipic dihydrazide); 4 parts of a leveling agent (a leveling agent PV 88);
the composite antibacterial agent is formed by combining nano silver and a ginkgo tree branch extract in a weight ratio of 2: 1;
the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) placing the ginkgo branch powder into an organic solvent consisting of n-butanol and cyclohexane, and heating, refluxing and extracting for 2 hours; concentrating and drying the extracting solution after the extraction is finished to obtain the ginkgo branch extract;
in the organic solvent, the volume ratio of n-butyl alcohol to cyclohexane is 4: 1; the dosage ratio of the ginkgo branch powder to the organic solvent consisting of n-butanol and cyclohexane is 1g:15 mL.
The preparation method comprises the following steps: and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
Example 2 preparation of powder coating having antibacterial function
The raw materials comprise the following components in parts by weight: 70 parts of epoxy resin; 60 parts of polyester resin; 40 parts of filler (precipitated barium sulfate); 0.5 part of composite antibacterial agent; 7 parts of a curing agent (adipic dihydrazide); 1 part of leveling agent (leveling agent PV 88);
the composite antibacterial agent is formed by combining nano silver and a ginkgo tree branch extract in a weight ratio of 1: 1;
the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) placing the ginkgo branch powder into an organic solvent consisting of n-butanol and cyclohexane, and heating, refluxing and extracting for 2 hours; concentrating and drying the extracting solution after the extraction is finished to obtain the ginkgo branch extract;
in the organic solvent, the volume ratio of n-butyl alcohol to cyclohexane is 3: 1; the dosage ratio of the ginkgo branch powder to the organic solvent consisting of n-butanol and cyclohexane is 1g:10 mL.
The preparation method comprises the following steps: and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
EXAMPLE 3 preparation of powder coating having antibacterial function
The raw materials comprise the following components in parts by weight: 100 parts of epoxy resin; 30 parts of polyester resin; 20 parts of filler (precipitated barium sulfate); 2 parts of a composite antibacterial agent; 3 parts of a curing agent (adipic dihydrazide); 2 parts of a leveling agent (leveling agent PV 88);
the composite antibacterial agent is formed by combining nano silver and a ginkgo tree branch extract in a weight ratio of 3: 1;
the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) placing the ginkgo branch powder into an organic solvent consisting of n-butanol and cyclohexane, and heating, refluxing and extracting for 3 hours; concentrating and drying the extracting solution after the extraction is finished to obtain the ginkgo branch extract;
in the organic solvent, the volume ratio of n-butyl alcohol to cyclohexane is 5: 1; the dosage ratio of the ginkgo branch powder to the organic solvent consisting of n-butanol and cyclohexane is 1g:20 mL.
The preparation method comprises the following steps: and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
Comparative example 1 preparation of powder coating having antibacterial function
The raw materials comprise the following components in parts by weight: 80 parts of epoxy resin; 40 parts of polyester resin; 30 parts of filler (precipitated barium sulfate); 1 part of a composite antibacterial agent; 5 parts of a curing agent (adipic dihydrazide); 4 parts of a leveling agent (a leveling agent PV 88);
the composite antibacterial agent is formed by combining nano silver and a ginkgo tree branch extract in a weight ratio of 2: 1;
the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) placing the ginkgo branch powder into absolute ethyl alcohol to carry out heating reflux extraction for 2 hours; concentrating and drying the extracting solution after the extraction is finished to obtain the ginkgo branch extract;
the dosage ratio of the ginkgo branch powder to the absolute ethyl alcohol is 1g:15 mL.
The preparation method comprises the following steps: and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
Comparative example 1 differs from example 1 in that comparative example 1 employs absolute ethanol extraction to obtain ginkgo biloba branch extract; while example 1 was an extract of ginkgo tree branches obtained by extraction with an organic solvent consisting of n-butanol and cyclohexane.
Comparative example 2 preparation of powder coating having antibacterial function
The raw materials comprise the following components in parts by weight: 80 parts of epoxy resin; 40 parts of polyester resin; 30 parts of filler (precipitated barium sulfate); 1 part of a composite antibacterial agent; 5 parts of a curing agent (adipic dihydrazide); 4 parts of a leveling agent (a leveling agent PV 88);
the composite antibacterial agent is formed by combining nano silver and a ginkgo tree branch extract in a weight ratio of 2: 1;
the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) putting the ginkgo branch powder into n-butanol, and heating, refluxing and extracting for 2 h; concentrating and drying the extracting solution after the extraction is finished to obtain the ginkgo branch extract;
the dosage ratio of the ginkgo branch powder to the n-butanol is 1g:15 mL.
The preparation method comprises the following steps: and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
Comparative example 2 differs from example 1 in that comparative example 2 employs n-butanol extraction to obtain ginkgo biloba extract; while example 1 was an extract of ginkgo tree branches obtained by extraction with an organic solvent consisting of n-butanol and cyclohexane.
Comparative example 3 preparation of powder coating having antibacterial function
The raw materials comprise the following components in parts by weight: 80 parts of epoxy resin; 40 parts of polyester resin; 30 parts of filler (precipitated barium sulfate); 1 part of a composite antibacterial agent; 5 parts of a curing agent (adipic dihydrazide); 4 parts of a leveling agent (a leveling agent PV 88);
the composite antibacterial agent is formed by combining nano silver and a ginkgo tree branch extract in a weight ratio of 2: 1;
the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) placing the ginkgo branch powder into cyclohexane to carry out heating reflux extraction for 2 hours; concentrating and drying the extracting solution after the extraction is finished to obtain the ginkgo branch extract;
the dosage ratio of the ginkgo branch powder to the cyclohexane is 1g:15 mL.
The preparation method comprises the following steps: and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
Comparative example 3 differs from example 1 in that comparative example 3 employs cyclohexane extraction to obtain a ginkgo tree branch extract; while example 1 was an extract of ginkgo tree branches obtained by extraction with an organic solvent consisting of n-butanol and cyclohexane.
Comparative example 4 preparation of powder coating having antibacterial function
The raw materials comprise the following components in parts by weight: 80 parts of epoxy resin; 40 parts of polyester resin; 30 parts of filler (precipitated barium sulfate); 1 part of a composite antibacterial agent; 5 parts of a curing agent (adipic dihydrazide); 4 parts of a leveling agent (a leveling agent PV 88);
the composite antibacterial agent is formed by combining nano silver and a ginkgo tree branch extract in a weight ratio of 2: 1;
the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) placing the ginkgo branch powder into an organic solvent consisting of absolute ethyl alcohol and cyclohexane to carry out heating reflux extraction for 2 hours; concentrating and drying the extracting solution after the extraction is finished to obtain the ginkgo branch extract;
in the organic solvent, the volume ratio of absolute ethyl alcohol to cyclohexane is 4: 1; the dosage ratio of the ginkgo branch powder to the organic solvent consisting of n-butanol and cyclohexane is 1g:15 mL.
The preparation method comprises the following steps: and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
Comparative example 4 is different from example 1 in that comparative example 4 is an extract of ginkgo tree branches obtained by extraction with an organic solvent consisting of absolute ethanol and cyclohexane; while example 1 was an extract of ginkgo tree branches obtained by extraction with an organic solvent consisting of n-butanol and cyclohexane.
The powder coatings with the antibacterial function prepared in the embodiments 1-3 and the comparative examples 1-4 are tested for the antibacterial rate to methicillin-resistant staphylococcus aureus, staphylococcus aureus and escherichia coli by a GB/T21866-2008 antibacterial coating (paint film) antibacterial property measuring method and an antibacterial effect method; the test results are shown in Table 1.
TABLE 1 results of the antibacterial property test of the powder coating having antibacterial function of the present invention
Figure BDA0003344341520000071
As can be seen from the experimental data in Table 1, the antibacterial rate of the powder coating with the antibacterial function prepared in the embodiments 1-3 to methicillin-resistant Staphylococcus aureus, Staphylococcus aureus and Escherichia coli is over 90%; in particular, the antibacterial rate of the powder coating with antibacterial function prepared in example 1 to methicillin-resistant staphylococcus aureus, staphylococcus aureus and escherichia coli is more than 99%, which indicates that the powder coating prepared by adding the composite antibacterial agent consisting of nano silver and ginkgo tree branch extract has excellent antibacterial performance and excellent methicillin-resistant staphylococcus aureus effect.
The experimental data in table 1 show that the antibacterial rate of the powder coating with antibacterial function prepared in example 1 to methicillin-resistant staphylococcus aureus is far higher than that of comparative examples 1-3; this indicates that: the preparation method of the ginkgo tree branch extract plays an important role in whether the composite antibacterial agent can play an excellent role in resisting methicillin-resistant staphylococcus aureus in the powder coating. Only the powder coating prepared by the ginkgo tree branch extract obtained by adopting the organic solvent consisting of n-butyl alcohol and cyclohexane has excellent methicillin-resistant staphylococcus aureus effect; the powder coating prepared by extracting the ginkgo tree branch extract by adopting single absolute ethyl alcohol, normal butanol or cyclohexane does not have excellent methicillin-resistant staphylococcus aureus effect.
As can be seen from the experimental data in Table 1, the antibacterial rate of the powder coating with antibacterial function prepared in example 1 to methicillin-resistant Staphylococcus aureus is far higher than that of comparative example 4; therefore, the powder coating prepared from the ginkgo tree branch extract obtained by extracting the ginkgo tree branch extract by the organic solvent consisting of absolute ethyl alcohol and cyclohexane has the effect of resisting methicillin-resistant staphylococcus aureus equivalent to that of a single solvent; this indicates that: the ginkgo tree branch extract prepared by random combination of organic solvents can greatly improve the methicillin-resistant staphylococcus aureus effect of the powder coating; only the organic solvent consisting of n-butanol and cyclohexane is used for extracting the ginkgo tree branch extract, so that the methicillin-resistant staphylococcus aureus effect of the powder coating can be greatly improved.

Claims (10)

1. The powder coating with the antibacterial function is characterized by comprising the following components in parts by weight:
70-100 parts of epoxy resin; 30-60 parts of polyester resin; 20-40 parts of a filler; 0.5-3 parts of a composite antibacterial agent; 3-10 parts of a curing agent; 1-5 parts of a leveling agent;
the composite antibacterial agent comprises nano silver and a ginkgo tree branch extract.
2. The powder coating with the antibacterial function as claimed in claim 1, wherein the weight ratio of the nano-silver to the ginkgo tree branch extract in the composite antibacterial agent is 1-3: 1.
3. The powder coating with antibacterial function of claim 1, wherein the weight ratio of the nano-silver to the ginkgo tree branch extract in the composite antibacterial agent is 2: 1.
4. The powder coating with antibacterial function according to claim 1, wherein the ginkgo tree branch extract is prepared by the following method:
(1) pulverizing semen Ginkgo branch to obtain semen Ginkgo branch powder;
(2) putting the ginkgo branch powder into an organic solvent consisting of n-butyl alcohol and cyclohexane, and heating, refluxing and extracting for 2-3 h; after the extraction is finished, concentrating and drying the extracting solution to obtain the ginkgo branch extract.
5. The powder coating with the antibacterial function according to claim 4, wherein the volume ratio of n-butanol to cyclohexane in step (2) is 3-5: 1;
most preferably, the volume ratio of n-butanol to cyclohexane in step (2) is 4: 1.
6. The powder coating with the antibacterial function according to claim 1, wherein the dosage ratio of the ginkgo tree branch powder in the step (2) to the organic solvent consisting of n-butanol and cyclohexane is 1g: 10-20 mL;
most preferably, the ratio of the amount of the ginkgo biloba branch powder to the organic solvent consisting of n-butanol and cyclohexane in step (2) is 1g:15 mL.
7. The powder coating material with antibacterial function according to claim 1, wherein said filler is selected from precipitated barium sulfate.
8. The powder coating with antibacterial function according to claim 1, wherein the curing agent is adipic acid dihydrazide.
9. The powder coating with antibacterial function as claimed in claim 1, wherein the leveling agent is leveling agent PV 88.
10. The method for preparing the powder coating with the antibacterial function according to any one of claims 1 to 9, which is characterized by being prepared by the following method:
and (2) putting the epoxy resin, the polyester resin, the filler, the composite antibacterial agent, the curing agent and the flatting agent into a high-speed mixer, uniformly mixing, then extruding by using an extruder to obtain master batches, and then crushing the master batches into powder to obtain the powder coating with the antibacterial function.
CN202111318356.6A 2021-11-09 2021-11-09 Powder coating with antibacterial function and preparation method thereof Pending CN113999590A (en)

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CN104189026A (en) * 2014-08-20 2014-12-10 山东省分析测试中心 Method for removing and enriching ginkgolic acid from ginkgo biloba extract
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KR101639552B1 (en) * 2016-01-29 2016-07-13 이원경 Forest Ginseng Cultivated From Wild Ginseng Berry And Cultivation Method Thereof
CN113321992A (en) * 2021-05-13 2021-08-31 江门市皇宙实业有限公司 Antibacterial powder coating

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101928506A (en) * 2010-08-27 2010-12-29 四川大学 Long-acting antibacterial nano composite modified epoxy-polyester powder coating and preparation method thereof
CN101967753A (en) * 2010-09-14 2011-02-09 江苏联宏纺织有限公司 Nanometer antibiosis cashmere knit fabric and production method thereof
CN104189026A (en) * 2014-08-20 2014-12-10 山东省分析测试中心 Method for removing and enriching ginkgolic acid from ginkgo biloba extract
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