CN113969093A - Antifouling antibacterial coating with high stability and preparation method thereof - Google Patents
Antifouling antibacterial coating with high stability and preparation method thereof Download PDFInfo
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- 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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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention discloses an antifouling antibacterial coating with high stability and a preparation method thereof. This antifouling antibacterial coating with high stability and preparation method thereof, through the basal plane bond line, the three-layer spraying of middle bond line and antifouling layer, realize long-time antibiotic purpose of continuing, carry out basal plane bond line and antifouling layer's overlap joint through nanofiber, structural colluding, the stability of further improvement coating, and three spraying layer all possesses antibacterial effect, make effective antifouling antibiotic that still can guarantee the coating when shallow scratch appears, application scope has greatly been improved, ramie fiber structural strength is high, thereby the stability of reinforced coating structure, bamboo fiber possesses natural bactericidal effect, thereby reinforced coating's antibiotic effect of continuing.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an antifouling antibacterial coating with high stability and a preparation method thereof.
Background
A coating is a covering applied to the surface of an object, commonly referred to as a substrate. The purpose of applying the coating may be for decoration, for function, or both. The coating can be a full coating which completely covers the substrate, and can only cover a part of the substrate, the antifouling antibacterial coating is a coating with an antifouling antibacterial function, common antifouling antibacterial coatings are mostly finished by one-time spraying, so that the stability of the coating is easily ignored while the antifouling antibacterial function is pursued, the coating is easy to fall off, and the continuous antibacterial effect and the durability are poor.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an antifouling and antibacterial coating with high stability and a preparation method thereof, and solves the problems.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an antifouling antibacterial coating with high stability, which comprises a coating body, wherein the coating body comprises a basal adhesion layer, an intermediate adhesion layer and an antifouling layer, the top of the basal adhesion layer is fixedly adhered to the bottom of the intermediate adhesion layer, the top of the intermediate buffer layer is fixedly adhered to the bottom of the antifouling layer, and the basal adhesion layer comprises the following raw materials in parts by weight: 2-5 parts of inorganic antibacterial agent, 60-95 parts of amino resin and 3-10 parts of first film forming aid, wherein the intermediate bonding layer comprises the following raw materials in parts by weight: 15-32 parts of nano-fiber, 3-7 parts of plant extract, 80-160 parts of modified polypropylene, 30-55 parts of glutinous rice flour, 1-3 parts of dispersant and 4-8 parts of flatting agent, wherein the antifouling layer comprises the following raw materials in parts by weight: 2-5 parts of nano silicon dioxide, 3-6 parts of nano silver ions, 70-85 parts of alkyd resin and 3-5 parts of second film forming auxiliary agent,
through adopting above-mentioned technical scheme, through the three-layer spraying of base face adhesive layer, middle adhesive layer and antifouling layer, realize lasting antibiotic purpose for a long time to carry out the overlap joint of base face adhesive layer and antifouling layer through nanofiber, structural colluding even, the stability of further improvement coating, and three spraying layer all possesses antibacterial effect, makes the effective antifouling antibiotic that still can guarantee the coating when the shallow scratch appears, has greatly improved application scope.
The invention is further configured to: the base surface adhesive layer comprises the following raw materials in parts by weight: 2 parts of inorganic antibacterial agent, 95 parts of amino resin and 10 parts of first film forming auxiliary agent, wherein the intermediate bonding layer comprises the following raw materials in parts by weight: 15 parts of nano-fiber, 3 parts of plant extract, 160 parts of modified polypropylene, 30 parts of glutinous rice flour, 1 part of dispersant and 4 parts of flatting agent, wherein the antifouling layer comprises the following raw materials in parts by weight: 2 parts of nano silicon dioxide, 3 parts of nano silver ions, 85 parts of alkyd resin and 5 parts of second film forming aid.
The invention is further configured to: the base surface adhesive layer comprises the following raw materials in parts by weight: 4 parts of inorganic antibacterial agent, 80 parts of amino resin and 6 parts of first film forming auxiliary agent, wherein the intermediate bonding layer comprises the following raw materials in parts by weight: 25 parts of nano-fiber, 5 parts of plant extract, 120 parts of modified polypropylene, 40 parts of glutinous rice flour, 2 parts of dispersant and 6 parts of flatting agent, wherein the antifouling layer comprises the following raw materials in parts by weight: 4 parts of nano silicon dioxide, 5 parts of nano silver ions, 80 parts of alkyd resin and 4 parts of second film forming aid.
The invention is further configured to: the base surface adhesive layer comprises the following raw materials in parts by weight: 5 parts of inorganic antibacterial agent, 60 parts of amino resin and 3 parts of first film forming auxiliary agent, wherein the intermediate bonding layer comprises the following raw materials in parts by weight: 32 parts of nano-fiber, 7 parts of plant extract, 80 parts of modified polypropylene, 55 parts of glutinous rice flour, 3 parts of dispersant and 8 parts of flatting agent, wherein the antifouling layer comprises the following raw materials in parts by weight: 5 parts of nano silicon dioxide, 6 parts of nano silver ions, 70 parts of alkyd resin and 3 parts of second film forming aid.
The invention is further configured to: the inorganic antibacterial agent is prepared from zinc oxide, copper oxide, ammonium dihydrogen phosphate and lithium carbonate according to the proportion of 1: 3.
The invention is further configured to: the nano-fiber is prepared from ramie fibers and bamboo fibers according to the proportion of 1: 3.
Through adopting above-mentioned technical scheme, ramie fibre and bamboo fiber are degradable fiber, get the material extensive while, have effectively reduced the cost of raw materials, realize energy-concerving and environment-protective purpose to ramie fiber structural strength is high, thereby the stability of reinforced coating structure, and bamboo fiber possesses natural bactericidal effect, thereby reinforced coating's lasting antibacterial effect.
The invention is further configured to: the plant extract is prepared by extracting one or more of camphor tree, oleander, buxus sinica, photinia serrulata, juniper and cedar.
Through adopting above-mentioned technical scheme, the plant extract possesses antibacterial effect to possess the volatile effect, at the in-process that the coating was used, can be lastingly disinfect, thereby guarantee the powerful bactericidal effect that the coating put into use in-process.
The invention also discloses a preparation method of the antifouling antibacterial coating with high stability, which comprises the following steps:
step one, pretreatment: pouring an inorganic antibacterial agent and amino resin into a stirrer, stirring for 10-15min at the speed of 800-;
step two, spraying and combining: spraying the base coating A prepared in the step one on a spraying substrate subjected to surface treatment to form a base adhesive layer, directly spraying the intermediate coating B prepared in the step one on the base adhesive layer after the surface of the base adhesive layer is subjected to film condensation to form an intermediate adhesive layer, spraying the surface coating C prepared in the step one on the intermediate adhesive layer after the surface of the intermediate adhesive layer is subjected to film condensation, baking at the constant temperature of 75 ℃ for 1-1.5h, and standing until the surface coating is completely solidified.
(III) advantageous effects
The invention provides an antifouling antibacterial coating with high stability and a preparation method thereof. The method has the following beneficial effects:
(1) according to the antifouling antibacterial coating with high stability and the preparation method thereof, the purpose of continuous antibacterial for a long time is achieved through three-layer spraying of the base surface bonding layer, the middle bonding layer and the antifouling layer, the base surface bonding layer and the antifouling layer are overlapped through the nano fibers, the structural hooking is achieved, the stability of the coating is further improved, and the three spraying layers have an antibacterial effect, so that the effective antifouling antibacterial property of the coating can be still guaranteed when shallow scratches appear, and the application range is greatly improved.
(2) According to the anti-fouling antibacterial coating with high stability and the preparation method thereof, the ramie fibers and the bamboo fibers are degradable fibers, so that the cost of raw materials is effectively reduced while the materials are taken widely, the purposes of energy conservation and environmental protection are achieved, the ramie fibers are high in structural strength, the stability of the coating structure is enhanced, and the bamboo fibers have a natural antibacterial effect, so that the continuous antibacterial effect of the coating is enhanced.
(3) According to the antifouling antibacterial coating with high stability and the preparation method thereof, the plant extracting solution has an antibacterial effect and a volatilization effect, and can be continuously sterilized in the using process of the coating, so that the strong sterilization effect of the coating in the using process is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1, coating the body; 2. a basal plane adhesive layer; 3. an intermediate adhesive layer; 4. and an antifouling layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Referring to fig. 1, the embodiment of the present invention provides the following three technical solutions:
the first embodiment,
A preparation method of an antifouling and antibacterial coating with high stability specifically comprises the following steps:
step one, pretreatment: pouring 2 parts of inorganic antibacterial agent and 95 parts of amino resin into a stirrer, stirring for 10min at the speed of 800r/min, adding 10 parts of deionized water and first film-forming aid, stirring for 3min continuously to obtain a base coating A, pouring 15 parts of nanofiber, 160 parts of modified polypropylene and 30 parts of glutinous rice flour into the stirrer, stirring for 3min at the speed of 1500r/min, adding 1 part of deionized water, 1 part of dispersant, 4 parts of flatting agent and 3 parts of plant extract, stirring for 15min at the speed of 600r/min to obtain an intermediate coating B, pouring 2 parts of nano silicon dioxide, 3 parts of nano silver ions, 85 parts of alkyd resin and 5 parts of second film-forming aid into the stirrer, stirring for 10min at the speed of 1200r/min, adding deionized water, and stirring for 20min continuously to obtain a surface coating C;
step two, spraying and combining: spraying the base coating A prepared in the step one on a spraying substrate subjected to surface treatment to form a base surface adhesive layer 2, directly spraying the intermediate coating B prepared in the step one on the base surface adhesive layer 2 after the surface of the base surface adhesive layer 2 is subjected to film condensation to form an intermediate adhesive layer 3, spraying the surface coating C prepared in the step one on the intermediate adhesive layer 3 after the surface of the intermediate adhesive layer 3 is subjected to film condensation, baking at the constant temperature of 75 ℃ for 1.5 hours, and standing until the surface coating is completely solidified.
Example II,
A preparation method of an antifouling and antibacterial coating with high stability specifically comprises the following steps:
step one, pretreatment: pouring 4 parts of inorganic antibacterial agent and 80 parts of amino resin into a stirrer, stirring for 13min at the speed of 700r/min, adding 6 parts of deionized water and first film-forming aid, stirring for 4min continuously to obtain a base coating A, pouring 25 parts of nanofiber, 120 parts of modified polypropylene and 40 parts of glutinous rice flour into the stirrer, stirring for 5min at the speed of 1300r/min, adding 2 parts of deionized water, 2 parts of dispersant, 6 parts of flatting agent and 5 parts of plant extract, stirring for 20min at the speed of 550r/min to obtain an intermediate coating B, pouring 4 parts of nano silicon dioxide, 5 parts of nano silver ions, 80 parts of alkyd resin and 4 parts of second film-forming aid into the stirrer, stirring for 12min at the speed of 1000r/min, adding deionized water, and stirring for 25min continuously to obtain a surface coating C;
step two, spraying and combining: spraying the base coating A prepared in the step one on a spraying substrate subjected to surface treatment to form a base surface adhesive layer 2, directly spraying the intermediate coating B prepared in the step one on the base surface adhesive layer 2 after the surface of the base surface adhesive layer 2 is subjected to film condensation to form an intermediate adhesive layer 3, spraying the surface coating C prepared in the step one on the intermediate adhesive layer 3 after the surface of the intermediate adhesive layer 3 is subjected to film condensation, baking at the constant temperature of 75 ℃ for 1.2h, and standing until the surface coating is completely solidified.
Example III,
A preparation method of an antifouling and antibacterial coating with high stability specifically comprises the following steps:
step one, pretreatment: pouring 5 parts of inorganic antibacterial agent and 60 parts of amino resin into a stirrer, stirring for 15min at the speed of 500r/min, adding 3 parts of deionized water and first film-forming aid, continuously stirring for 5min to obtain a base coating A, pouring 32 parts of nanofiber, 80 parts of modified polypropylene and 55 parts of glutinous rice flour into the stirrer, stirring for 6min at the speed of 1000r/min, adding 3 parts of deionized water, 3 parts of dispersant, 8 parts of flatting agent and 7 parts of plant extract, stirring for 25min at the speed of 500r/min to obtain an intermediate coating B, pouring 5 parts of nano silicon dioxide, 6 parts of nano silver ions, 70 parts of alkyd resin and 3 parts of second film-forming aid into the stirrer, stirring for 15min at the speed of 800r/min, adding deionized water, and continuously stirring for 35min to obtain a surface coating C;
step two, spraying and combining: spraying the base coating A prepared in the step one on a spraying substrate subjected to surface treatment to form a base surface adhesive layer 2, directly spraying the intermediate coating B prepared in the step one on the base surface adhesive layer 2 after the surface of the base surface adhesive layer 2 is subjected to film condensation to form an intermediate adhesive layer 3, spraying the surface coating C prepared in the step one on the intermediate adhesive layer 3 after the surface of the intermediate adhesive layer 3 is subjected to film condensation, baking at the constant temperature of 75 ℃ for 1 hour, and standing until the surface coating is completely solidified.
In summary, the bactericidal strength, the bactericidal duration and the structural stability of the coating prepared by the scheme in the first embodiment of the invention are weaker than those of the second embodiment and the third embodiment;
compared with the three phases of the first embodiment and the third embodiment, the sterilization strength, the sterilization duration and the structural stability of the coating prepared by the scheme in the second embodiment of the invention are weaker than those in the third embodiment, but the structural stability is higher than that of the coating prepared by the third embodiment;
compared with the first embodiment and the second embodiment, the coating prepared by the scheme in the third embodiment of the invention has better bactericidal strength, bactericidal duration and structural stability than the coating prepared by the first embodiment and the second embodiment, but the structural stability is poorer than that of the coating prepared by the second embodiment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An antifouling and antibacterial coating with high stability, comprising a coating body (1), characterized in that: the coating body (1) comprises a basal surface adhesive layer (2), an intermediate adhesive layer (3) and an antifouling layer (4), wherein the top of the basal surface adhesive layer (2) is fixedly adhered to the bottom of the intermediate adhesive layer (3), the top of the intermediate buffer layer () is fixedly adhered to the bottom of the antifouling layer (4), and the basal surface adhesive layer (2) comprises the following raw materials in parts by weight: 2-5 parts of inorganic antibacterial agent, 60-95 parts of amino resin and 3-10 parts of first film forming aid, wherein the intermediate bonding layer (3) comprises the following raw materials in parts by weight: 15-32 parts of nano-fiber, 3-7 parts of plant extract, 80-160 parts of modified polypropylene, 30-55 parts of glutinous rice flour, 1-3 parts of dispersant and 4-8 parts of flatting agent, wherein the antifouling layer (4) comprises the following raw materials in parts by weight: 2-5 parts of nano silicon dioxide, 3-6 parts of nano silver ions, 70-85 parts of alkyd resin and 3-5 parts of second film forming auxiliary agent.
2. A highly stable antifouling and antibacterial coating according to claim 1, characterized in that: the base surface adhesive layer (2) comprises the following raw materials in parts by weight: 2 parts of inorganic antibacterial agent, 95 parts of amino resin and 10 parts of first film forming auxiliary agent, wherein the intermediate bonding layer (3) comprises the following raw materials in parts by weight: 15 parts of nano-fiber, 3 parts of plant extract, 160 parts of modified polypropylene, 30 parts of glutinous rice flour, 1 part of dispersant and 4 parts of flatting agent, wherein the antifouling layer (4) comprises the following raw materials in parts by weight: 2 parts of nano silicon dioxide, 3 parts of nano silver ions, 85 parts of alkyd resin and 5 parts of second film forming aid.
3. A highly stable antifouling and antibacterial coating according to claim 1, characterized in that: the base surface adhesive layer (2) comprises the following raw materials in parts by weight: 4 parts of inorganic antibacterial agent, 80 parts of amino resin and 6 parts of first film forming auxiliary agent, wherein the intermediate bonding layer (3) comprises the following raw materials in parts by weight: 25 parts of nano-fiber, 5 parts of plant extract, 120 parts of modified polypropylene, 40 parts of glutinous rice flour, 2 parts of dispersant and 6 parts of flatting agent, wherein the antifouling layer (4) comprises the following raw materials in parts by weight: 4 parts of nano silicon dioxide, 5 parts of nano silver ions, 80 parts of alkyd resin and 4 parts of second film forming aid.
4. A highly stable antifouling and antibacterial coating according to claim 1, characterized in that: the base surface adhesive layer (2) comprises the following raw materials in parts by weight: 5 parts of inorganic antibacterial agent, 60 parts of amino resin and 3 parts of first film forming auxiliary agent, wherein the intermediate bonding layer (3) comprises the following raw materials in parts by weight: 32 parts of nano-fiber, 7 parts of plant extract, 80 parts of modified polypropylene, 55 parts of glutinous rice flour, 3 parts of dispersant and 8 parts of flatting agent, wherein the antifouling layer (4) comprises the following raw materials in parts by weight: 5 parts of nano silicon dioxide, 6 parts of nano silver ions, 70 parts of alkyd resin and 3 parts of second film forming aid.
5. A highly stable antifouling and antibacterial coating according to any of claims 1 to 4, characterized in that: the inorganic antibacterial agent is prepared from zinc oxide, copper oxide, ammonium dihydrogen phosphate and lithium carbonate according to the proportion of 1: 3.
6. A highly stable antifouling and antibacterial coating according to any of claims 1 to 4, characterized in that: the nano-fiber is prepared from ramie fibers and bamboo fibers according to the proportion of 1: 3.
7. A highly stable antifouling and antibacterial coating according to any of claims 1 to 4, characterized in that: the plant extract is prepared by extracting one or more of camphor tree, oleander, buxus sinica, photinia serrulata, juniper and cedar.
8. A preparation method of an antifouling and antibacterial coating with high stability is characterized by comprising the following steps: the method specifically comprises the following steps:
step one, pretreatment: pouring an inorganic antibacterial agent and amino resin into a stirrer, stirring for 10-15min at the speed of 800-;
step two, spraying and combining: spraying the base coating A prepared in the step one on a spraying substrate subjected to surface treatment to form a base surface bonding layer (2), directly spraying the intermediate coating B prepared in the step one on the base surface bonding layer (2) to form an intermediate bonding layer (3) after the surface of the base surface bonding layer (2) is subjected to film condensation, spraying the surface coating C prepared in the step one on the intermediate bonding layer (3) after the surface of the intermediate bonding layer (3) is subjected to film condensation, baking at the constant temperature of 75 ℃ for 1-1.5h, and standing until the surface coating is completely solidified.
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| CN213798469U (en) * | 2020-11-11 | 2021-07-27 | 瑞年新材料(广东)有限公司 | Mould-proof antibacterial aluminized film |
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