CN111763464A - Antibacterial powder coating and preparation method thereof - Google Patents
Antibacterial powder coating and preparation method thereof Download PDFInfo
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- CN111763464A CN111763464A CN202010541768.5A CN202010541768A CN111763464A CN 111763464 A CN111763464 A CN 111763464A CN 202010541768 A CN202010541768 A CN 202010541768A CN 111763464 A CN111763464 A CN 111763464A
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- antibacterial
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- powder coating
- antibacterial agent
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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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
- 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
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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
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses an antibacterial powder coating and a preparation method thereof, wherein the antibacterial powder coating comprises the following components in parts by weight: 20-30 parts of epoxy resin, 30-40 parts of polyester resin, 0.5-1 part of antibacterial agent, 0.8-1.2 parts of coupling agent, 30-40 parts of pigment and filler and 2-25 parts of auxiliary agent; the coupling agent is formed by copolymerization modification of titanate and stearic acid, and the antibacterial agent is formed by compounding an organic antibacterial agent and an inorganic antibacterial agent. The added composite antibacterial agent has broad-spectrum antibacterial property, and prevents the powder coating spraying product from becoming a propagation path of certain diseases. According to the invention, the surface of the antibacterial agent is treated by adding the specific coupling agent, so that the sufficient wetting fusion between the antibacterial agent and the resin is enhanced, the antibacterial action time is prolonged, and the harm to a human body caused by the separation of the antibacterial agent from the surface of a coating film in the later period is avoided.
Description
Technical Field
The invention belongs to the field of functional powder coatings, and particularly relates to an antibacterial powder coating and a preparation method thereof.
Background
With the increasing awareness of the people on environmental protection and the continuous perfection of national environmental protection laws and regulations, the control of the content of Volatile Organic Compounds (VOC) in the coating industry is tighter and tighter, and the powder coating has the characteristic of zero VOC emission in the production and use processes, shows the advantages of environment-friendly products more and more, and has wider application range. With the wider application range of the powder coating, products sprayed by the powder coating are more used in a humid and bacteria-rich environment. But when the coating is applied to a humid and bacteria-rich environment, the surface of the coating can mildew and breed bacteria, and the coating becomes a path for spreading certain diseases. The existing antibacterial powder coating has the defects of unobvious antibacterial effect and short antibacterial action time, and meanwhile, if the coating is used for a long time, the antibacterial agent is separated out from the surface of the coating, so that the risk of harm to a human body is increased.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects and shortcomings in the background art, and provide an antibacterial powder coating and a preparation method thereof, which can enhance the antibacterial effect, prolong the antibacterial action time and avoid the later precipitation of an antibacterial agent from the surface of a coating film.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
an antibacterial powder coating comprises the following components in parts by weight: 20-30 parts of epoxy resin, 30-40 parts of polyester resin, 0.5-1 part of antibacterial agent, 0.8-1.2 parts of coupling agent, 30-40 parts of pigment and filler and 2-25 parts of auxiliary agent; the coupling agent is formed by copolymerization modification of titanate and stearic acid, and the antibacterial agent is formed by compounding an organic antibacterial agent and an inorganic antibacterial agent.
Further, the coupling agent adopts triisostearoyl titanate or a powder coupling agent ND 782.
Further, the inorganic antibacterial agent adopts silver salt, and the organic antibacterial agent adopts imidazole and/or quaternary ammonium salt.
Further, the mass ratio of the inorganic antibacterial agent to the organic antibacterial agent is 1: (0.8 to 1.2).
Further, the silver salt takes zeolite as a carrier, and the mass ratio of the silver salt to the zeolite is 1: (70-120).
Further, the pigment filler comprises barium sulfate, titanium dioxide and pigment.
Further, the auxiliary agent comprises 1.2-10 parts of a flatting agent, 0.3-3 parts of a brightener and 0.8-10 parts of benzoin.
The preparation method of the antibacterial powder coating comprises the following steps: mixing the components, extruding the mixture through an extruder, and finally grinding the mixture to obtain the antibacterial powder coating.
Compared with the prior art, the invention has the beneficial effects that:
in order to solve the mildew and bacteria breeding phenomena of powder coating spraying products and block disease transmission ways, the invention adds an organic and inorganic composite antibacterial agent in the formula of the powder coating, and the antibacterial agent has broad-spectrum antibacterial effect, can inhibit most bacteria and even viruses, and prevents the powder coating spraying products from becoming transmission ways of certain diseases. Meanwhile, the surface of the antibacterial agent is treated by adding the specific coupling agent, so that the sufficient wetting fusion between the antibacterial agent and the resin is enhanced, the antibacterial action time is prolonged, and the phenomenon that the antibacterial agent is separated out from the surface of a coating film at the later stage to cause damage to a human body is avoided.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
The antibacterial powder coating comprises, by weight, 20-30 parts of epoxy resin, 30-40 parts of polyester resin, 0.5-1 part of antibacterial agent, 0.8-1.2 parts of coupling agent, 30-40 parts of pigment and filler and 2-25 parts of auxiliary agent.
In one embodiment, the auxiliary agent comprises 1.2-10 parts of a leveling agent, 0.3-3 parts of a brightener and 0.8-10 parts of benzoin. The existing leveling agents and brighteners can be used.
In a particular embodiment, the color filler includes barium sulfate, titanium dioxide, and pigments.
The coupling agent is formed by copolymerization modification of titanate and stearic acid, so that the coupling agent in the powder is strengthened to link the antibacterial agent and the resin through intermolecular force, the full wetting fusion between the antibacterial agent and the resin is enhanced, and the possibility of the antibacterial agent precipitating from the surface of a coating film is reduced. The existing triisostearoyl titanate can be used, or the powder coupling agent ND 782.
The antibacterial agent is formed by compounding an organic antibacterial agent and an inorganic antibacterial agent. In one specific embodiment, the inorganic antibacterial agent is silver salt, such as silver nitrate, the organic antibacterial agent is imidazole or quaternary ammonium salt, and the mass ratio of the inorganic antibacterial agent to the organic antibacterial agent is 1 (0.8-1.2). The silver salt is generally zeolite as a carrier, and the mass ratio of the silver salt to the zeolite is 1 (70-120). The composite antibacterial agent has broad-spectrum antibacterial performance.
In one embodiment, a method of preparing an antimicrobial powder coating includes: the components are mixed and stirred according to the formula amount, run at high speed through an extruder, precisely control the temperature to be blocky, and then are ground to the particle size of about 35 mu m through classification treatment.
According to the invention, by introducing the composite antibacterial agent and the specific coupling agent into the powder coating, the powder coating has the functions of long-acting and broad-spectrum antibacterial and even inhibiting certain viruses after being coated, and does not cause damage to human bodies, the surface of a coated workpiece can be long-acting antibacterial and mildewproof, the condition that the surface of the workpiece is damaged by mildew is avoided, the condition that the surface of the workpiece becomes a propagation path of certain diseases is avoided, and the condition that the surface of the workpiece is damaged by precipitation of the antibacterial agent is avoided.
Example 1
According to the mass ratio of the antibacterial powder coating in the embodiment shown in table 1, the antibacterial agent 1 is silver nitrate and imidazole in a mass ratio of 1:1, the silver nitrate is zeolite as a carrier, and the mass ratio of the silver nitrate to the zeolite is 1: 100.
The components are mixed and stirred according to the formula amount, the mixture is rotated at a high speed through an extruder, the temperature is accurately controlled (100 ℃ in a first zone and 110 ℃ in a second zone) to be in a lump shape, and then the mixture is ground to have the particle size of about 35 mu m through classification treatment.
Example 2
According to the mass ratio of the antibacterial powder coating in the embodiment shown in the table 1, the antibacterial agent 2 is silver nitrate and quaternary ammonium salt (N, N-dimethyl-N-octadecylaminopropyltrimethoxysilane quaternary ammonium salt (quaternary ammonium silane BFS for short), the mass ratio is 1:1, the silver nitrate is zeolite as a carrier, and the mass ratio of the silver nitrate to the zeolite is 1: 100.
The components are mixed and stirred according to the formula amount, the mixture is rotated at a high speed through an extruder, the temperature is accurately controlled (100 ℃ in a first zone and 110 ℃ in a second zone) to be in a lump shape, and then the mixture is ground to have the particle size of about 35 mu m through classification treatment.
Comparative example
The antibacterial powder coating comprises the following components in percentage by mass according to the mass in a table 1, wherein an antibacterial agent 2 comprises silver nitrate and quaternary ammonium salt (N, N-dimethyl-N-octadecylaminopropyl trimethoxy silane quaternary ammonium salt (quaternary ammonium silane BFS for short), the mass ratio of the silver nitrate to the quaternary ammonium salt is 1:1, zeolite is used as a carrier of the silver nitrate, and the mass ratio of the silver nitrate to the zeolite is 1: 100.
The components are mixed and stirred according to the formula amount, the mixture is rotated at a high speed through an extruder, the temperature is accurately controlled (100 ℃ in a first zone and 110 ℃ in a second zone) to be in a lump shape, and then the mixture is ground to have the particle size of about 35 mu m through classification treatment.
The physicochemical properties of the powder coatings obtained in examples 1 and 2 after spraying, baking, curing and film forming are shown in Table 2, and the antibacterial property tests are shown in tables 3 and 4. Antibacterial property test 1: gram positive bacteria (staphylococcus aureus ATCC 6538P); antibacterial property test 2: gram-negative bacteria (Escherichia coli ATCC 8739) are tested according to HG/T3950-2007, made into sample plates, and placed under the conditions of constant temperature and constant humidity (temperature is 35 ℃ and relative humidity is 90) for testing.
TABLE 1 example and comparative example proportions
TABLE 2 physicochemical Properties
Table 3 antibacterial property test 1
Table 4 antibacterial property test 2
The experiments show that the powder coating disclosed by the invention has excellent physical and chemical properties after being sprayed and formed into a film, has an obvious antibacterial and mildewproof effect, avoids the damage of mildew on the surface of a workpiece, and avoids the surface of the workpiece becoming a propagation path of certain diseases.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (8)
1. The antibacterial powder coating is characterized by comprising the following components in parts by weight: 20-30 parts of epoxy resin, 30-40 parts of polyester resin, 0.5-1 part of antibacterial agent, 0.8-1.2 parts of coupling agent, 30-40 parts of pigment and filler and 2-25 parts of auxiliary agent; the coupling agent is formed by copolymerization modification of titanate and stearic acid, and the antibacterial agent is formed by compounding an organic antibacterial agent and an inorganic antibacterial agent.
2. The antibacterial powder coating of claim 1, wherein the coupling agent is triisostearoyl titanate or powder coupling agent ND 782.
3. The antibacterial powder coating according to claim 1 or 2, wherein the inorganic antibacterial agent is a silver salt, and the organic antibacterial agent is imidazole and/or a quaternary ammonium salt.
4. The antibacterial powder coating as claimed in claim 1 or 2, wherein the mass ratio of the inorganic antibacterial agent to the organic antibacterial agent is 1 (0.8-1.2).
5. The antibacterial powder coating as claimed in claim 3, wherein the silver salt is supported by zeolite, and the mass ratio of the silver salt to the zeolite is 1 (70-120).
6. The antibacterial powder coating of claim 1 or 2, wherein the pigment filler comprises barium sulfate, titanium dioxide and pigment.
7. The antibacterial powder coating according to claim 1 or 2, wherein the assistant comprises 1.2-10 parts of a leveling agent, 0.3-3 parts of a brightener and 0.8-10 parts of benzoin.
8. A method for preparing the antibacterial powder coating of any one of claims 1 to 7, characterized by comprising the following steps: mixing the components, extruding the mixture through an extruder, and finally grinding the mixture to obtain the antibacterial powder coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010541768.5A CN111763464A (en) | 2020-06-15 | 2020-06-15 | Antibacterial powder coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010541768.5A CN111763464A (en) | 2020-06-15 | 2020-06-15 | Antibacterial powder coating and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111763464A true CN111763464A (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010541768.5A Withdrawn CN111763464A (en) | 2020-06-15 | 2020-06-15 | Antibacterial powder coating and preparation method thereof |
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| CN (1) | CN111763464A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112358755A (en) * | 2020-11-10 | 2021-02-12 | 安徽博泰装饰材料有限公司 | Outdoor weather-resistant grade antibacterial powder coating and preparation method thereof |
| CN112480779A (en) * | 2020-11-20 | 2021-03-12 | 湖南太子化工涂料有限公司 | Polyester and epoxy resin powder coating modified by organic composite antibacterial agent and preparation method thereof |
| CN114437608A (en) * | 2021-12-27 | 2022-05-06 | 张家港市华辰塑粉有限公司 | Antibacterial powder coating and preparation method thereof |
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| KR100833072B1 (en) * | 2006-12-28 | 2008-05-27 | 주식회사 포스코 | Compositions for treating a metal surface having excellent antibacteria, workability and corrosion resistance and surface treated steel sheets therewith |
| CN101189971A (en) * | 2006-11-20 | 2008-06-04 | 北京崇高纳米科技有限公司 | Inorganic/organic nano composite antibacterial agent and its fabric product application |
| 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 |
| CN109627921A (en) * | 2018-12-29 | 2019-04-16 | 六安科瑞达新型材料有限公司 | A kind of Ag-carried nanometer titanium dioxide antibacterial powder paint |
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2020
- 2020-06-15 CN CN202010541768.5A patent/CN111763464A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101189971A (en) * | 2006-11-20 | 2008-06-04 | 北京崇高纳米科技有限公司 | Inorganic/organic nano composite antibacterial agent and its fabric product application |
| KR100833072B1 (en) * | 2006-12-28 | 2008-05-27 | 주식회사 포스코 | Compositions for treating a metal surface having excellent antibacteria, workability and corrosion resistance and surface treated steel sheets therewith |
| 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 |
| CN109627921A (en) * | 2018-12-29 | 2019-04-16 | 六安科瑞达新型材料有限公司 | A kind of Ag-carried nanometer titanium dioxide antibacterial powder paint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112358755A (en) * | 2020-11-10 | 2021-02-12 | 安徽博泰装饰材料有限公司 | Outdoor weather-resistant grade antibacterial powder coating and preparation method thereof |
| CN112480779A (en) * | 2020-11-20 | 2021-03-12 | 湖南太子化工涂料有限公司 | Polyester and epoxy resin powder coating modified by organic composite antibacterial agent and preparation method thereof |
| CN114437608A (en) * | 2021-12-27 | 2022-05-06 | 张家港市华辰塑粉有限公司 | Antibacterial powder coating and preparation method thereof |
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Application publication date: 20201013 |
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