CN115386271A - Antibacterial and mildewproof aluminum profile powder coating and preparation method thereof - Google Patents
Antibacterial and mildewproof aluminum profile powder coating and preparation method thereof Download PDFInfo
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- CN115386271A CN115386271A CN202210922619.2A CN202210922619A CN115386271A CN 115386271 A CN115386271 A CN 115386271A CN 202210922619 A CN202210922619 A CN 202210922619A CN 115386271 A CN115386271 A CN 115386271A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 77
- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 55
- 239000000843 powder Substances 0.000 title claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 40
- 239000002994 raw material Substances 0.000 claims abstract description 21
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 10
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 10
- 244000028419 Styrax benzoin Species 0.000 claims abstract description 6
- 235000000126 Styrax benzoin Nutrition 0.000 claims abstract description 6
- 235000008411 Sumatra benzointree Nutrition 0.000 claims abstract description 6
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 6
- 229960002130 benzoin Drugs 0.000 claims abstract description 6
- 235000019382 gum benzoic Nutrition 0.000 claims abstract description 6
- 239000007822 coupling agent Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 32
- 239000013067 intermediate product Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 12
- 229960001701 chloroform Drugs 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 9
- 238000002390 rotary evaporation Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- MPPPKRYCTPRNTB-UHFFFAOYSA-N 1-bromobutane Chemical compound CCCCBr MPPPKRYCTPRNTB-UHFFFAOYSA-N 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- DILRJUIACXKSQE-UHFFFAOYSA-N n',n'-dimethylethane-1,2-diamine Chemical compound CN(C)CCN DILRJUIACXKSQE-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- ZZEWWICTTDGVEZ-UHFFFAOYSA-N n',n'-dimethylethane-1,2-diamine;ethanol Chemical compound CCO.CN(C)CCN ZZEWWICTTDGVEZ-UHFFFAOYSA-N 0.000 claims 1
- 150000003242 quaternary ammonium salts Chemical group 0.000 abstract description 12
- 239000000758 substrate Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 8
- 239000011203 carbon fibre reinforced carbon Substances 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 5
- 230000000996 additive effect Effects 0.000 abstract description 5
- 238000010309 melting process Methods 0.000 abstract description 4
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- 238000013508 migration Methods 0.000 abstract description 4
- 238000006116 polymerization reaction Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000007792 addition Methods 0.000 description 5
- 239000003242 anti bacterial agent Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000007344 nucleophilic reaction Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
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- 238000005956 quaternization reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
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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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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Engineering & Computer Science (AREA)
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- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
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Abstract
The invention discloses an antibacterial and mildewproof aluminum profile powder coating and a preparation method thereof, belonging to the technical field of powder coatings and comprising the following raw materials in parts by weight: 40-50 parts of acrylic resin, 14-18 parts of filler, 0.3-0.4 part of coupling agent, 0.8-1 part of antibacterial auxiliary agent, 10-12 parts of curing agent, 0.6-0.7 part of flatting agent, 0.2-0.3 part of benzoin and 0.2-0.3 part of defoaming agent. According to the powder coating, the acrylic resin is used as a film-forming substrate, the antibacterial auxiliary agent is added into the raw material, the antibacterial auxiliary agent is a quaternary ammonium salt additive, and in the subsequent coating melting process, the antibacterial auxiliary agent can participate in the polymerization process of the film-forming substrate through a carbon-carbon double bond and acts with the film-forming substrate in a chemical bonding manner, so that the migration resistance of the antibacterial auxiliary agent can be improved, and the coating can continuously and stably play an antibacterial role; and the addition of the antibacterial auxiliary agent does not cause the reduction of the mechanical property and the decorative effect of the coating.
Description
Technical Field
The invention belongs to the technical field of powder coatings, and particularly relates to an antibacterial and mildewproof aluminum profile powder coating and a preparation method thereof.
Background
The powder coating has the characteristics of resource saving, energy saving, no pollution, high labor productivity, convenient realization of automatic coating and the like, is a well-known ecological environment-friendly coating product with high production efficiency, excellent coating performance and economy, has the fastest development speed in various coating varieties, and provides space for the development of a plurality of functional coatings. Powder coatings are widely applied to surface coating of metal materials, and because metals have good thermal conductivity, the requirements of heat insulation performance and heat insulation performance of general metal workpieces are difficult to achieve through powder coating, which limits the application of the powder coatings in some specific fields.
With the increasing awareness of people on health and environmental protection, new requirements on functional powder coatings such as antibacterial coatings are provided. At present, the antibacterial agent for the coating comprises nano silver and organic quaternary ammonium salt, wherein silver ions can be continuously released from the nano silver, PPM of silver in water body regulated by some countries can not exceed 0.5PPM, otherwise, heavy metal pollution can be caused, huge damage can be caused to the water body, and the nano silver antibacterial agent can be accumulated to cause pathological changes if being absorbed by internal organs of a human body, so that the health of the human body is damaged. The organic quaternary ammonium salt antibacterial agent has the greatest advantages of environmental protection, safety, no toxicity, no irritation to skin, lasting antibacterial effect and good washing fastness. However, the existing quaternary ammonium salt antibacterial agent has weak action with a substrate, so that the lasting time of the antibacterial and mildewproof effect is short, and the quaternary ammonium salt antibacterial agent has poor compatibility with main film forming substances in the powder coating, thereby influencing the mechanical property and the decorative effect of the powder coating.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an antibacterial and mildewproof aluminum profile powder coating and a preparation method thereof.
The powder coating takes acrylic resin as a film-forming matrix, the antibacterial auxiliary agent is added into the raw materials, the antibacterial auxiliary agent is a quaternary ammonium salt type additive, the molecule of the antibacterial auxiliary agent contains a plurality of functional groups such as quaternary ammonium salt, a plurality of amido bonds, carbon-carbon double bonds and the like, and in the subsequent coating melting process, the antibacterial auxiliary agent can participate in the polymerization process of the film-forming matrix through the carbon-carbon double bonds and acts with the film-forming matrix in a chemical bonding mode, so that the antibacterial auxiliary agent can be anchored in a coating layer in a chemical bonding effect, the migration resistance of the antibacterial auxiliary agent is improved, and the coating layer can continuously and stably play an antibacterial effect; and the addition of the antibacterial auxiliary agent does not cause the reduction of the mechanical property and the decorative effect of the coating.
The purpose of the invention can be realized by the following technical scheme:
an antibacterial and mildewproof aluminum profile powder coating comprises the following raw materials in parts by weight: 40-50 parts of acrylic resin, 14-18 parts of filler, 0.3-0.4 part of coupling agent, 0.8-1 part of antibacterial auxiliary agent, 10-12 parts of curing agent, 0.6-0.7 part of flatting agent, 0.2-0.3 part of benzoin and 0.2-0.3 part of defoaming agent.
Furthermore, the filler is one or a mixture of a plurality of titanium dioxide, calcium carbonate and mica powder according to any proportion.
Further, the coupling agent is a silane coupling agent KH560 or a silane coupling agent KH550.
Further, the antibacterial auxiliary agent is prepared by the following steps:
s1, dissolving 2-vinyl-4, 4-dimethyl-2-oxazoline-5-ketone in ethanol in a three-neck flask, putting the mixture into a thermostatic water bath at 37 ℃, slowly dripping 20 mass percent ethanol solution of N, N-dimethylethylenediamine by using a constant-pressure dropping funnel, stirring and reacting for 24 hours at the constant temperature of 37 ℃, and after the reaction is finished, removing the ethanol by rotary evaporation to obtain an intermediate product; the dosage ratio of the 2-vinyl-4, 4-dimethyl-2-oxazoline-5-ketone to the ethanol solution of ethanol and N, N-dimethylethylenediamine is 14g, 80mL;
2-vinyl-4, 4-dimethyl-2-oxazoline-5-ketone contains an azolactone ring group with higher activity and a terminal-NH on the molecule of N, N-dimethylethylenediamine 2 Nucleophilic reaction takes place to obtain intermediate product, the reaction process is as follows:
s2, adding the prepared intermediate product and trichloromethane into a three-neck flask, stirring at room temperature to completely dissolve the intermediate product and the trichloromethane, adding bromobutane, heating to 70 ℃, performing reflux reaction for 12 hours, removing the trichloromethane by rotary evaporation after the reaction is finished, and fully drying to obtain the antibacterial auxiliary agent; the dosage ratio of the intermediate product, the trichloromethane and the bromobutane is 36.5g;
under the action of bromobutane, the nitrogen-containing groups on the molecules of the intermediate product are subjected to quaternization reaction to obtain the antibacterial auxiliary agent, and the reaction process is as follows:
the obtained antibacterial auxiliary agent is a quaternary ammonium salt type additive, and the molecule of the additive contains a plurality of functional groups such as quaternary ammonium salt, a plurality of amido bonds, carbon-carbon double bonds and the like, wherein the quaternary ammonium salt has the characteristics of good antibacterial effect, strong stability, safety and no toxicity, has stronger killing effect on bacteria, mould and other microorganisms, and belongs to an antibacterial and mildewproof functional group; wherein, the amido bond has stronger hydrogen bond interaction with the film forming substrate (acrylic resin) of the powder coating; the carbon-carbon double bond can participate in the polymerization process of the film-forming substrate in the subsequent coating melting process and act with the film-forming substrate in a chemical bonding manner, so that the antibacterial auxiliary agent can be anchored in the coating in a chemical bonding effect, the migration resistance of the antibacterial auxiliary agent is improved, and the coating can continuously and stably play an antibacterial effect; and the addition of the antibacterial auxiliary agent does not cause the reduction of the mechanical property of the coating, and the mechanical property is not reduced while the antibacterial and mildewproof properties are endowed.
A preparation method of an antibacterial and mildewproof aluminum profile powder coating comprises the following steps:
firstly, weighing the raw materials according to the weight part ratio of the formula, and putting the raw materials into a high-speed mixer to mix for 5-6min to obtain a premix;
and step two, setting the temperature of the double-screw extruder to be 110 ℃, putting the premix into a hopper of the extruder, maintaining constant speed for melting, mixing and extruding, performing double-roller tabletting, cooling the sheet, grinding by using a high-speed pulverizer, and sieving by using a 180-mesh sieve to obtain the antibacterial and mildewproof aluminum profile powder coating.
The invention has the beneficial effects that:
according to the powder coating, acrylic resin is used as a film-forming substrate, an antibacterial auxiliary agent is added into the raw material, the antibacterial auxiliary agent is a quaternary ammonium salt type additive, the molecule of the antibacterial auxiliary agent contains a plurality of functional groups such as quaternary ammonium salt, a plurality of amido bonds, carbon-carbon double bonds and the like, and in the subsequent coating melting process, the antibacterial auxiliary agent can participate in the polymerization process of the film-forming substrate through the carbon-carbon double bonds and acts with the film-forming substrate in a chemical bonding manner, so that the antibacterial auxiliary agent can be anchored in a coating in a chemical bonding manner, the migration resistance of the antibacterial auxiliary agent is improved, and the coating can continuously and stably play an antibacterial and mildewproof role; and the addition of the antibacterial auxiliary agent can not cause the reduction of the mechanical property and the decorative effect of the coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The antibacterial auxiliary agent is prepared by the following steps:
s1, dissolving 28g of 2-vinyl-4, 4-dimethyl-2-oxazoline-5-ketone in 160mL of ethanol in a three-neck flask, putting the mixture into a 37 ℃ constant-temperature water bath, slowly dropping 88mL of ethanol solution of N, N-dimethylethylenediamine with the mass fraction of 20% by using a constant-pressure dropping funnel, stirring and reacting at the constant temperature of 37 ℃ for 24 hours, and after the reaction is finished, removing the ethanol by rotary evaporation to obtain an intermediate product;
s2, adding 36.5g of the prepared intermediate product and 250mL of trichloromethane into a three-neck flask, stirring at room temperature to completely dissolve the intermediate product, then adding 14.5g of bromobutane, heating to 70 ℃, carrying out reflux reaction for 12 hours, carrying out rotary evaporation to remove the trichloromethane after the reaction is finished, and fully drying to obtain the antibacterial auxiliary agent.
Example 2
The antibacterial auxiliary agent is prepared by the following steps:
s1, dissolving 14g of 2-vinyl-4, 4-dimethyl-2-oxazoline-5-ketone in 80mL of ethanol in a three-neck flask, putting the ethanol into a thermostatic water bath at 37 ℃, slowly dripping 44mL of ethanol solution of N, N-dimethylethylenediamine with the mass fraction of 20% by using a constant-pressure dripping funnel, stirring and reacting at the constant temperature of 37 ℃ for 24 hours, and after the reaction is finished, removing the ethanol by rotary evaporation to obtain an intermediate product;
s2, adding 18.25g of the prepared intermediate product and 125mL of trichloromethane into a three-neck flask, stirring at room temperature to completely dissolve the intermediate product, then adding 7.25g of bromobutane, heating to 70 ℃, carrying out reflux reaction for 12 hours, removing the trichloromethane by rotary evaporation after the reaction is finished, and fully drying to obtain the antibacterial auxiliary agent.
Example 3
An antibacterial and mildewproof aluminum profile powder coating comprises the following raw materials in parts by weight: 400g of acrylic resin, 140g of titanium dioxide, 5603g of silane coupling agent KH, 8g of antibacterial auxiliary agent, 100g of curing agent DDDA, 6g of flatting agent, 2g of benzoin and 2g of defoaming agent;
the preparation method of the powder coating comprises the following steps:
firstly, weighing the raw materials according to the weight part ratio of the formula, and putting the raw materials into a high-speed mixer for mixing for 5min to obtain a premix;
and secondly, setting the temperature of the double-screw extruder to be 110 ℃, putting the premix into a hopper of the extruder, maintaining constant-speed melting, mixing and extruding, performing double-roller tabletting, cooling the sheet, grinding by using a high-speed pulverizer, and sieving by using a 180-mesh sieve to obtain the antibacterial and mildewproof aluminum profile powder coating.
Example 4
An antibacterial and mildewproof aluminum profile powder coating comprises the following raw materials in parts by weight: 450g of acrylic resin, 160g of calcium carbonate, 3.5g of silane coupling agent KH5503, 9g of antibacterial auxiliary agent, 110g of curing agent DDDA, 6.5g of flatting agent, 2.5g of benzoin and 2.5g of defoaming agent;
the preparation method of the powder coating comprises the following steps:
firstly, weighing the raw materials according to the weight part ratio of the formula, and putting the raw materials into a high-speed mixer for mixing for 5.5min to obtain a premix;
and secondly, setting the temperature of the double-screw extruder to be 110 ℃, putting the premix into a hopper of the extruder, maintaining constant-speed melting, mixing and extruding, performing double-roller tabletting, cooling the sheet, grinding by using a high-speed pulverizer, and sieving by using a 180-mesh sieve to obtain the antibacterial and mildewproof aluminum profile powder coating.
Example 5
An antibacterial and mildewproof aluminum profile powder coating comprises the following raw materials in parts by weight: 500g of acrylic resin, 180g of mica powder, KH5604g of silane coupling agent, 10g of antibacterial auxiliary agent, 120g of curing agent DDDA, 7g of flatting agent, 3g of benzoin and 3g of defoaming agent;
the preparation method of the powder coating comprises the following steps:
firstly, weighing the raw materials according to the weight part ratio of the formula, and putting the raw materials into a high-speed mixer for mixing for 6min to obtain a premix;
and secondly, setting the temperature of the double-screw extruder to be 110 ℃, putting the premix into a hopper of the extruder, maintaining constant-speed melting, mixing and extruding, performing double-roller tabletting, cooling the sheet, grinding by using a high-speed pulverizer, and sieving by using a 180-mesh sieve to obtain the antibacterial and mildewproof aluminum profile powder coating.
Comparative example
The raw materials of the antibacterial auxiliary agent in the example 3 are removed, and the rest raw materials and the preparation process are unchanged.
The powder coatings obtained in examples 3-5 and comparative example were sprayed on the surface of the metal plate after degreasing and rust removal by electrostatic spraying, and then baked and cured in an oven at 200 ℃ for 10min to form a coating, and the following performance tests were performed:
detecting the antibacterial performance of the antibacterial powder coating according to GB 21551.2-2010; carrying out mildew resistance detection according to GB 21551.2-2010; impact resistance was tested according to GB/T1732-1993; adhesion (cross-hatch method): testing according to GB/T9286-1998;
the results obtained are shown in the following table:
the data in the table show that the powder coating prepared by the invention has higher antibacterial property (the antibacterial rate to escherichia coli and staphylococcus aureus reaches more than 99.0 percent) and higher anti-mildew performance (28 d, no mildew grows and the mildew-proof grade is 0 grade); the data of the comparative example show that the paint provided by the invention can endow the paint with excellent antibacterial and mildewproof properties through the addition of the antibacterial auxiliary agent, and the antibacterial and mildewproof properties do not have negative influence on the mechanical properties of the coating.
In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only, and it will be appreciated by those skilled in the art that various modifications, additions and substitutions can be made to the embodiments described without departing from the scope of the invention as defined in the appended claims.
Claims (6)
1. The antibacterial and mildewproof aluminum profile powder coating is characterized by comprising the following raw materials in parts by weight: 40-50 parts of acrylic resin, 14-18 parts of filler, 0.3-0.4 part of coupling agent, 0.8-1 part of antibacterial auxiliary agent, 10-12 parts of curing agent, 0.6-0.7 part of flatting agent, 0.2-0.3 part of benzoin and 0.2-0.3 part of defoaming agent;
the antibacterial auxiliary agent is prepared by the following steps:
s1, dissolving 2-vinyl-4, 4-dimethyl-2-oxazoline-5-ketone in ethanol in a three-neck flask, putting the mixture into a thermostatic water bath at 37 ℃, slowly dripping 20 mass percent of N, N-dimethylethylenediamine ethanol solution by using a constant-pressure dropping funnel, stirring and reacting at the constant temperature of 37 ℃ for 24 hours, and after the reaction is finished, removing the ethanol by rotary evaporation to obtain an intermediate product;
s2, adding the prepared intermediate product and trichloromethane into a three-neck flask, stirring at room temperature to completely dissolve the intermediate product and the trichloromethane, adding bromobutane, heating to 70 ℃, carrying out reflux reaction for 12 hours, carrying out rotary evaporation to remove the trichloromethane after the reaction is finished, and fully drying to obtain the antibacterial auxiliary agent.
2. The antibacterial and mildewproof aluminum profile powder coating as claimed in claim 1, wherein the ratio of the dosage of the ethanol solution of 2-vinyl-4, 4-dimethyl-2-oxazoline-5-ketone, ethanol and N, N-dimethylethylenediamine in step S1 is 14g.
3. The antibacterial and mildewproof aluminum profile powder coating as claimed in claim 1, wherein the use amount ratio of the intermediate product, the trichloromethane and the bromobutane in the step S2 is 36.5g.
4. The antibacterial and mildewproof aluminum profile powder coating as claimed in claim 1, wherein the filler is one or a mixture of titanium dioxide, calcium carbonate and mica powder in any proportion.
5. The antibacterial and mildewproof aluminum profile powder coating as claimed in claim 1, wherein the coupling agent is a silane coupling agent KH560 or a silane coupling agent KH550.
6. The preparation method of the antibacterial and mildewproof aluminum profile powder coating as claimed in claim 1, is characterized by comprising the following steps of:
firstly, weighing the raw materials according to the weight part ratio of the formula, and putting the raw materials into a high-speed mixer for mixing for 5-6min to obtain a premix;
and step two, setting the temperature of the double-screw extruder to be 110 ℃, putting the premix into a hopper of the extruder, maintaining constant speed for melting, mixing and extruding, performing double-roller tabletting, cooling the sheet, grinding by using a high-speed pulverizer, and sieving by using a 180-mesh sieve to obtain the antibacterial and mildewproof aluminum profile powder coating.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007026751A1 (en) * | 2005-08-31 | 2007-03-08 | Mitsubishi Plastics, Inc. | Gas barrier multilayer film |
| CN104830135A (en) * | 2015-05-04 | 2015-08-12 | 中国科学院长春应用化学研究所 | Antibacterial coating and preparation method thereof |
| CN110157294A (en) * | 2019-05-28 | 2019-08-23 | 六安科瑞达新型材料有限公司 | A kind of antibacterial powder paint |
| CN111978772A (en) * | 2020-07-24 | 2020-11-24 | 安徽华辉塑业科技股份有限公司 | Antibacterial and antivirus powder coating and preparation process thereof |
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2022
- 2022-08-02 CN CN202210922619.2A patent/CN115386271B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007026751A1 (en) * | 2005-08-31 | 2007-03-08 | Mitsubishi Plastics, Inc. | Gas barrier multilayer film |
| CN104830135A (en) * | 2015-05-04 | 2015-08-12 | 中国科学院长春应用化学研究所 | Antibacterial coating and preparation method thereof |
| CN110157294A (en) * | 2019-05-28 | 2019-08-23 | 六安科瑞达新型材料有限公司 | A kind of antibacterial powder paint |
| CN111978772A (en) * | 2020-07-24 | 2020-11-24 | 安徽华辉塑业科技股份有限公司 | Antibacterial and antivirus powder coating and preparation process thereof |
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Denomination of invention: An antibacterial and anti mold aluminum profile powder coating and its preparation method Granted publication date: 20230411 Pledgee: China Construction Bank Co.,Ltd. Anqing Chengzhong Branch Pledgor: Anhui dengwang Chemical Co.,Ltd. Registration number: Y2024980014784 |
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