CN110965333A - Preparation method of water-based antibacterial conductive coating - Google Patents
Preparation method of water-based antibacterial conductive coating Download PDFInfo
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- CN110965333A CN110965333A CN201811148170.9A CN201811148170A CN110965333A CN 110965333 A CN110965333 A CN 110965333A CN 201811148170 A CN201811148170 A CN 201811148170A CN 110965333 A CN110965333 A CN 110965333A
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- water
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- conductive coating
- finishing agent
- based antibacterial
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
Abstract
The invention relates to a preparation method of a water-based antibacterial conductive coating, which is characterized by comprising the following steps of ① preparing graphene slurry, wherein graphene and first deionized water are uniformly mixed to form the graphene slurry, ② preparing a composite additive, wherein carbon black, a nano-silver finishing agent and a chitin finishing agent are added into the graphene slurry and are stirred until the mixture is uniform to obtain the composite additive, ③ preparing a base solution, wherein water-based polyurethane is dissolved in deionized water to obtain a base solution, ④ preparing a coating, wherein the composite additive is added into the base solution and is stirred for 1-4 hours at 1600-2000r/min to obtain the water-based antibacterial conductive coating.
Description
Technical Field
The invention relates to the field of coatings, in particular to a preparation method of a water-based antibacterial conductive coating.
Background
CN201610775499.2 discloses a preparation method of graphene modified flame-retardant antibacterial waterborne polyurethane coating, which comprises the steps of mixing 0.8g of catalyst, 90g of polytetrahydrofuran ether glycol and 70g of isophorone diisocyanate in a 500ml four-neck flask provided with stirring slurry, a thermometer and a condenser, reacting for 1h at 80 ℃, adding 0.05g of modified graphene in the step (3), reacting for 2h, and reacting at 70 ℃ to obtain a polyurethane prepolymer A; 1.6g of m-aminobenzene sulfonic acid and 20g of acetone are added into the prepolymer A, the mixture is reacted for 2 hours at the temperature of 75 ℃, 1.8g of 2,4, 6-trihydroxybenzoic acid is added, the reaction temperature is 80 ℃, the reaction time is 1 hour, 15g of triethylamine is added for neutralization reaction for 30 minutes, 150g of water is added for stirring and emulsification, and the graphene modified flame-retardant antibacterial waterborne polyurethane coating is obtained.
However, the preparation method of the coating is complex and high in cost, and the antibacterial performance needs to be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of a water-based antibacterial conductive coating, which is simple in preparation method and remarkably improved in conductivity and antibacterial property, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a preparation method of a water-based antibacterial conductive coating, which is characterized by comprising the following steps:
① preparation of graphene slurry
Uniformly mixing graphene and first deionized water to form graphene slurry; the solid content of graphene in the slurry is 2-4 wt%;
② preparation of composite additive
Adding carbon black, a nano-silver finishing agent and a chitin finishing agent into the graphene slurry, and stirring until the carbon black, the nano-silver finishing agent and the chitin finishing agent are uniformly mixed to obtain a composite additive;
③ preparation of the base solution
Dissolving waterborne polyurethane in deionized water to obtain a basic solution;
④ preparation of coatings
Adding the composite additive into the basic solution, and stirring at 1600-2000rpm for 1-4 hours to obtain the water-based antibacterial conductive coating;
the weight composition of each substance is as follows:
preferably, 0.5-1 part by weight of defoaming agent is dropwise added in the stirring process in the step ④.
Preferably, the aqueous polyurethane is cationic aqueous polyurethane to further improve the dispersibility of the coating mixture.
Preferably, the viscosity of the graphene slurry is 0.03Pa.s, and the solid content of graphene in the graphene slurry is 2.5 wt%.
The viscosity of the aqueous polyurethane is 0.01 Pa.s.
The chitin finishing agent is a commercially available chitin finishing agent SAL 6680.
The nano-silver finishing agent is a commercially available nano-silver antibacterial finishing agent SILV 9700.
Further, the solid content of the coating prepared in the step ④ is controlled to be 40-60 wt%.
Compared with the prior art, the preparation method of the water-based antibacterial conductive coating is simple, and the prepared water-based antibacterial conductive coating can help to purify air and eliminate wall mould and is used for medical institutions, public places, households and the like with high requirements on bacteriostasis; the antibacterial effect (tested in the current situation) of the antibacterial filter screen coated on the surface of the textile fiber has the antibacterial rate I of more than or equal to 99 percent and the rating of mildew is 0; the antibacterial effect (long-term test) of the filter screen is that the antibacterial rate II is more than or equal to 90 percent and the long mold grade is 1 grade. And the conductivity is good, and the antistatic effect of the surface of the textile fiber is excellent. After the film is formed, the water resistance and the adhesive force both reach the first grade; the cost is low, and the realization is easy.
Detailed Description
The present invention will be described in further detail with reference to examples.
The water-based antibacterial conductive coating comprises the following components in parts by weight:
① preparation of graphene slurry
Uniformly mixing graphene and first deionized water to form graphene slurry; the solid content of graphene in the slurry is 2-4 wt%;
② preparation of composite additive
Adding carbon black, a nano-silver finishing agent and a chitin finishing agent into the graphene slurry, and stirring until the carbon black, the nano-silver finishing agent and the chitin finishing agent are uniformly mixed to obtain a composite additive;
③ preparation of the base solution
Dissolving waterborne polyurethane in deionized water to obtain a basic solution; in the embodiment, the PU-102Y cationic waterborne polyurethane resin produced by the Zhongshon chemical is adopted, and the viscosity is 0.01 Pa.s.
④ preparation of coatings
Adding the composite additive into the basic solution, stirring at 1800rpm for 2 hours, firstly dropwise adding a pH regulator in the stirring process, and regulating the pH value of the coating to 8; after the dripping is finished, dripping the defoaming agent; and obtaining the water-based antibacterial conductive coating with the solid content of 50 wt%.
The weight composition of each substance is as follows:
the viscosity of the graphene slurry was 0.03pa · s, and the solid content of graphene in the graphene slurry was 2.5 wt%.
The chitin finishing agent is a commercially available chitin finishing agent SAL 6680.
The nano-silver finishing agent is a commercially available nano-silver antibacterial finishing agent SILV 9700.
And carrying out performance test on the prepared coating.
The antibacterial activity test is carried out by adopting a method of QBT2591-2003 'antibacterial plastic-antibacterial property test method and antibacterial effect', the antibacterial rate of staphylococcus aureus ATCC6538 reaches 99.9%, and the grade of the long mold is 0.
The conductivity is tested by adopting a method of controlling a resistance value, the device is a ZC-90 high insulation resistance measuring instrument, and the test resistance is 103Ω～105Omega; the coating has good conductivity.
The dope prepared in this example was applied to one surface of a textile fiber by a conventional film forming method to form a film on the surface of the fiber. And (3) leaching the coating layer in flowing water, wherein water drops cannot permeate the surface of the fiber, the other layer of the fiber has no water drop, and the coating layer leached by the water returns to the original shape after being dried by a blower.
The adhesive force of the film is measured by a BSS 7225 adhesive tape binding force test method, the adhesive tape is stuck on the dried coating and is rapidly and vertically stretched, and the damage degree of the coating and the film stuck on the adhesive tape are observed. The test result of this embodiment is a level I good.
Claims (8)
1. The preparation method of the water-based antibacterial conductive coating is characterized by comprising the following steps:
① preparation of graphene slurry
Uniformly mixing graphene and first deionized water to form graphene slurry; the solid content of graphene in the slurry is 2-4 wt%;
② preparation of composite additive
Adding carbon black, a nano-silver finishing agent and a chitin finishing agent into the graphene slurry, and stirring until the carbon black, the nano-silver finishing agent and the chitin finishing agent are uniformly mixed to obtain a composite additive;
③ preparation of the base solution
Dissolving waterborne polyurethane in deionized water to obtain a basic solution;
④ preparation of coatings
Adding the composite additive into the basic solution, and stirring for 1-4 hours at 1600-2000r/min to obtain the water-based antibacterial conductive coating;
the weight composition of each substance is as follows:
2. the preparation method of the water-based antibacterial conductive coating according to claim 1, characterized in that 0.5-1 part by weight of defoaming agent is also added dropwise in the stirring process of step ④.
3. The preparation method of the water-based antibacterial conductive coating according to claim 2, characterized in that the water-based polyurethane is cationic water-based polyurethane.
4. The preparation method of the water-based antibacterial conductive coating according to any one of claims 1 to 3, characterized in that the viscosity of the graphene slurry is 0.03Pa.s, and the solid content of graphene in the graphene slurry is 2.5 wt%.
5. The preparation method of the water-based antibacterial conductive coating according to claim 4, characterized in that the viscosity of the water-based polyurethane is 0.01 Pa.s.
6. The preparation method of the water-based antibacterial conductive coating as claimed in claim 5, wherein the chitin finishing agent is a commercially available chitin finishing agent SAL 6680.
7. The preparation method of the water-based antibacterial conductive coating according to claim 6, characterized in that the nano-silver finishing agent is a commercially available nano-silver antibacterial finishing agent SILV 9700.
8. The preparation method of the water-based antibacterial conductive coating according to claim 7, wherein the solid content of the coating prepared in the step ④ is 40-60 wt%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811148170.9A CN110965333A (en) | 2018-09-29 | 2018-09-29 | Preparation method of water-based antibacterial conductive coating |
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| CN201811148170.9A CN110965333A (en) | 2018-09-29 | 2018-09-29 | Preparation method of water-based antibacterial conductive coating |
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| CN110965333A true CN110965333A (en) | 2020-04-07 |
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| CN105348967A (en) * | 2015-12-04 | 2016-02-24 | 中国中化股份有限公司 | Carbon-serial water-based highly-conductive coating and application thereof |
| CN105505161A (en) * | 2015-09-30 | 2016-04-20 | 无锡同创石墨烯应用科技有限公司 | Graphite-modified water-based conductive coating composition and preparation method thereof |
| CN106590400A (en) * | 2016-11-10 | 2017-04-26 | 广东科迪新材料科技有限公司 | Graphene-modified waterborne conductive coating and preparation method thereof |
| US20170121559A1 (en) * | 2015-10-28 | 2017-05-04 | Korea Institute Of Science And Technology | Lignin-containing coating composition and ultrafine fibers including the same |
| CN107286775A (en) * | 2017-07-15 | 2017-10-24 | 佛山实瑞先导材料研究院（普通合伙） | A kind of aqueous antifouling and antibiosis electrically-conducting paint |
| CN107365514A (en) * | 2017-07-10 | 2017-11-21 | 上海理工大学 | A kind of graphene slurry of cation-type water-thinned polyurethane coating and its preparation method and application |
| CN108486869A (en) * | 2018-04-17 | 2018-09-04 | 海宁市依丽袜业有限公司 | A kind of preparation method of antibacterial socks |
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2018
- 2018-09-29 CN CN201811148170.9A patent/CN110965333A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469555A (en) * | 2013-09-23 | 2013-12-25 | 青岛大学 | Preparation method of ultraviolet-proof antistatic graphene coating textile fabric |
| CN104497833A (en) * | 2014-11-21 | 2015-04-08 | 杭州立威化工涂料有限公司 | High-performance environment-friendly water-based conductive antistatic coating and preparation method thereof |
| CN105505161A (en) * | 2015-09-30 | 2016-04-20 | 无锡同创石墨烯应用科技有限公司 | Graphite-modified water-based conductive coating composition and preparation method thereof |
| US20170121559A1 (en) * | 2015-10-28 | 2017-05-04 | Korea Institute Of Science And Technology | Lignin-containing coating composition and ultrafine fibers including the same |
| CN105348967A (en) * | 2015-12-04 | 2016-02-24 | 中国中化股份有限公司 | Carbon-serial water-based highly-conductive coating and application thereof |
| CN106590400A (en) * | 2016-11-10 | 2017-04-26 | 广东科迪新材料科技有限公司 | Graphene-modified waterborne conductive coating and preparation method thereof |
| CN107365514A (en) * | 2017-07-10 | 2017-11-21 | 上海理工大学 | A kind of graphene slurry of cation-type water-thinned polyurethane coating and its preparation method and application |
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Application publication date: 20200407 |