CN114437598A - Long-acting antibacterial mildew-proof algae-resistant coating and preparation method thereof - Google Patents
Long-acting antibacterial mildew-proof algae-resistant coating and preparation method thereof Download PDFInfo
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- 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
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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
Abstract
The invention discloses a long-acting antibacterial mildew-proof algae-resistant coating and a preparation method thereof, wherein a modified antibacterial material is added, the modified antibacterial material adopts carbonaceous mudstone to adsorb dendrobium officinale plant extract, active ingredients with antibacterial effect are fixedly adsorbed in a porous substrate, meanwhile, a functional auxiliary agent affinity addition halamine antibacterial agent is used as a modifier, prodigiosin and pyocin are used as functional auxiliary agents, nucleophilic addition reaction is carried out on the halamine antibacterial agent, and the antibacterial, mildew-proof and algae-resistant capabilities of the material are enhanced while the adsorption capability is enhanced.
Description
Technical Field
The invention belongs to the field of coatings, and particularly relates to a long-acting antibacterial mildew-proof algae-resistant coating and a preparation method thereof.
Background
Since the establishment of new China, along with the development of various industries of national economy, the paint industry matched with the new China is gradually developed from a small industry which is not attractive, into an essential important industry in various fields of national economy. The coating is a continuous film which is coated on the surface of an object to be protected or decorated and can form firm adhesion with the object to be coated, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliaries and using an organic solvent or water. The main functions are as follows: protect, decorate and cover the defects of the product so as to improve the value of the product.
The Chinese invention patent CN 107298883B discloses a long-acting antibacterial mildew-proof algae-resistant coating and a preparation method thereof, and the long-acting antibacterial mildew-proof algae-resistant coating is prepared from the following components in percentage by weight: 0.5 to 5.5 percent of Unined RM antibacterial mildew-proof algicide, 0.25 to 0.5 percent of dispersant A, 0.2 to 2 percent of coupling agent and the balance of paint base material. The Unined RM antibacterial mildew-proof algicide used in the coating is prepared from a plurality of compounds, has good dispersibility after being compounded with a coating product, has the functions of resisting common pathogenic bacteria, mildew and algae and inhibiting drug-resistant pathogenic bacteria when being added into a common coating product, can play the roles of purifying the environment, eliminating peculiar smell, self-cleaning and health care, does not pollute the environment, has no side effect on a human body, and can better care the health of the human body. The long-acting antibacterial mildew-proof algae-resistant coating disclosed by the invention uses a plurality of compounds, different functional groups of each compound are cooperatively matched, so that excellent effects of resisting common germs and inhibiting drug-resistant germs are achieved, and meanwhile, the problems that a natural antibacterial agent is not water-washing resistant and has toxic and side effects are solved, but the long-acting antibacterial mildew-proof algae-resistant coating is not strong.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a long-acting antibacterial mildew-proof algae-resistant coating and a preparation method thereof.
A preparation method of a long-acting antibacterial, mildewproof and algae-resistant coating comprises the following steps:
(1) uniformly mixing 20-40 parts of water, 1-2.5 parts of wetting agent, 20-40 parts of emulsion, 2-6 parts of dispersing agent, 2-6 parts of antifreezing agent and 5-10 parts of modified antibacterial material in parts by weight, and stirring at the rotating speed of 150-300 r/min for 0.5-1.5 hours to form a mixed solution A;
(2) stirring the mixed solution A obtained in the step (1) at a rotating speed of 600-1000 r/min for 20-40 minutes, then transferring the mixed solution A into a high-speed grinding machine, and grinding the mixed solution A at a rotating speed of 10000-12000 r/min for 20-40 minutes to form a mixed solution B;
(3) adding 1-3 parts by weight of thickening agent and 0.4-0.6 part by weight of defoaming agent into the mixed liquid B obtained in the step (2), stirring at the rotating speed of 300-500 r/min for 8-15 minutes, sieving by using a 80-150 mesh sieve, and taking undersize products to obtain the long-acting antibacterial mildew-proof algae-resistant coating.
The wetting agent is at least one of alkyl sulfate wetting agents, sulfonate wetting agents, fatty acid wetting agents, polyvinyl alkylphenol ether wetting agents, polyoxyethylene fatty alcohol ether wetting agents and polyether siloxane copolymer wetting agents. Preferably, the wetting agent is polyether siloxane copolymer AKN-1070.
The emulsion is at least one of acrylic emulsion and styrene-acrylic emulsion. Preferably, the emulsion is an acrylic emulsion.
The dispersing agent is at least one of polydimethylsiloxane, vinyl bis stearamide and barium stearate. Preferably, the dispersant is polydimethylsiloxane.
The antifreezing agent is at least one of propylene glycol, methanol, ethanol, isopropanol, ethylene glycol, diethylene glycol, ethylene glycol butyl ether, propylene glycol butyl ether, ethylene glycol butyl ether acetate, dichloromethane, 1-dichloroethane, 1, 2-dichloroethane, dimethyl sulfoxide, formamide, calcium chloride, sodium acetate and magnesium chloride. Preferably, the antifreeze agent is propylene glycol.
The thickener is at least one of bentonite, kaolin, palygorskite and hydroxyapatite. Preferably, the thickener is bentonite.
The defoaming agent is at least one of simethicone, lauric acid, palmitic acid, fatty acid and fatty glyceride. Preferably, the defoaming agent is dimethyl silicone oil.
The preparation method of the modified antibacterial material comprises the following steps:
s1, crushing the carbonaceous mudstone, sieving with a 300-500-mesh sieve, and taking undersize to obtain carbonaceous mudstone powder;
s2, uniformly mixing 15-25 parts by weight of the carbonaceous shale powder obtained in the step S1, 5-15 parts by weight of the modifier and 20-40 parts by weight of the plant extract, carrying out ultrasonic treatment for 20-40 minutes by using an ultrasonic instrument with the power of 80-120W and the frequency of 20-30 kHz, filtering, and drying a filter cake at 50-70 ℃ for 8-12 hours to obtain the modified antibacterial material.
The carbonaceous mudstone is a mudstone containing carbonaceous components, has a free carbon content of 20 percent, is a loose, soft and fragile sedimentary rock, has a loose and soft surface, is loose and porous, has a very good ventilation and adsorption effect, can adsorb bacteria and mould, performs sterilization and mould prevention treatment on the bacteria and the mould, and effectively inhibits bacteria.
The preparation method of the modifier comprises the following steps:
w1: dissolving 2-4 parts by weight of isocyanuric acid in 50-80 parts by weight of water to form a solution I;
w2: adding 0.6-1.0 part by weight of sodium hydroxide into the solution I, and stirring at the rotating speed of 500-700 r/min for 20-40 minutes to form a mixed solution II;
w3: dissolving 1-2 parts by weight of 3-chloroglycerol in 50-80 parts by weight of water to form a solution III;
w4: dropping 40-60 parts of the solution III into 40-60 parts of the mixed solution II at a rate of 1-2 drops/second according to parts by weight to obtain a mixed solution IV, adjusting the pH of the mixed solution IV to 5.8-6.2 by using 0.5-1.0M sulfuric acid aqueous solution, then adding 2-4 parts of functional additives, and stirring at a rotating speed of 500-700 r/min for 10-14 hours to obtain the modifier.
The functional auxiliary agent is a mixture of prodigiosin and pyocyanin a mass ratio of 1 (1-2).
The modifier adopts isocyanuric acid and 3-chloroglycerin to carry out nucleophilic substitution, an N-H bond in the structure of the modifier is chlorinated into an N-Cl bond, the N-Cl bond is ionized, so that free active chlorine is generated, the active chlorine inhibits and destroys enzymes required by the survival of microorganisms, the metabolism of the microorganisms is further influenced, the microorganisms are inactivated, and the effects of removing mites and sterilizing are achieved.
The amino structure of the functional auxiliary agent and the carbonyl in the isonitrile uric acid generate nucleophilic addition reaction, and the electron cloud density beside the N-Cl bond after the reaction is changed, so that the N-Cl bond is more easily broken, free active chlorine is released, and the sterilization effect is realized; meanwhile, the functional additive is connected to the modifier through carbonyl affinity addition reaction, and the pyocyanin and the prodigiosin have strong effects on resisting mildew and algae.
The prodigiosin in the functional auxiliary agent has obvious effect on resisting mildew; the pyocin has obvious algae-resistant effect, the molecular polarity of the prodigiosin is strong, so that pyocin molecules are polarized, induced dipole moment is generated and mutually attracted, the change of electron cloud density is enhanced, the N-Cl bond breakage is facilitated, and the antibacterial performance is further enhanced.
The preparation method of the plant extract comprises the following steps:
i, crushing: crushing the dendrobium officinale, and sieving with a sieve of 150-250 meshes to obtain dendrobium officinale powder;
II, extraction: according to the weight parts, 10-30 parts of the dendrobium officinale powder obtained in the step I and 0.4-0.6 part of cellulase are added into 80-120 parts of water, after the enzyme is extracted for 0.5-1.5 hours, the mixture is heated to 90-120 ℃, boiled and extracted at high temperature for 1.5-2.5 hours, and filtrate is obtained after filtration, so that plant extract is obtained.
The modified carbonaceous mudstone hole structure is more stable, the adsorption and fixation of active ingredients in the plant extract are more stable, and dendrobium officinale contains substances such as dendrobine, polysaccharide and polyphenol, so that the modified carbonaceous mudstone hole structure has a good sterilization effect.
The invention has the beneficial effects that: the long-acting antibacterial mildew-proof algae-resistant coating has a good antibacterial effect and also has good mildew-proof and algae-resistant effects.
Detailed Description
The raw materials used in the examples were as follows:
polyether siloxane copolymer AKN-1070, purchased from Qianzhi chemical Co., Ltd, in Foshan, contains polyether modified silicone oil, is colorless transparent liquid in appearance, and contains the following active components: 100 percent.
Acrylic emulsion, purchased from Shandong Junwu New materials science and technology Co., Ltd, model JW309, viscosity: 3000 mPas (25 ℃ C.).
Polydimethylsiloxane, purchased from Nanjing Danpei chemical Co., Ltd, CAS number: 9006-65-9, model: PMX-200, content 99.5%, viscosity 350(25 ℃).
The carbonaceous mudstone is purchased from Wujiarun carbonaceous mudstone GmbH in Yuanbao mountain area of inner Mongolia, the carbon content is 20 percent, and the particle size is 0.0039 mm.
Dendrobium officinale, purchased from the Life-prolonging Dendrobium officinale professional plantation in Leqing.
Cellulases, purchased from heuchi biotechnology limited, CAS number: 9032-75-1, enzyme activity: 10 ten thousand U/g.
Bentonite, purchased from rockhouse village dakun mineral products limited, item No. SX25, content: 99 percent and 325 meshes.
Dimethicone, available from the martian gill industries ltd, CAS number: 63148-62-9, type: JYS8451 with a content of 99 percent.
Isocyanuric acid, CAS No.: 108-80-5.
3-Chloroglycerol, CAS number: 96-24-2.
Prodigiosin, CAS number: 82-89-3.
Pyocin, CAS number: 85-66-5.
Example 1
A preparation method of a long-acting antibacterial, mildewproof and algae-resistant coating comprises the following steps:
(1) uniformly mixing 30 parts of water, 2 parts of wetting agent, 30 parts of emulsion, 4 parts of dispersing agent, 4 parts of antifreezing agent and 8 parts of modified antibacterial material in parts by weight, and stirring at the rotating speed of 200r/min for 1 hour to form a mixed solution A;
(2) stirring the mixed solution A obtained in the step (1) for 30 minutes at the rotating speed of 8000r/min, then transferring to a high-speed grinder, and grinding for 30 minutes at the rotating speed of 11000r/min to form mixed solution B;
(3) adding 2 parts by weight of thickening agent and 0.5 part by weight of defoaming agent into the mixed solution B obtained in the step (2), stirring at the rotating speed of 400r/min for 10 minutes, sieving by using a 100-mesh screen, and taking undersize products to obtain the long-acting antibacterial mildew-proof algae-resistant coating.
The wetting agent is polyether siloxane copolymer AKN-1070.
The emulsion is an acrylic emulsion.
The dispersing agent is polydimethylsiloxane.
The antifreezing agent is propylene glycol.
The thickening agent is bentonite.
The defoaming agent is dimethyl silicone oil.
The preparation method of the modified antibacterial material comprises the following steps:
s1, crushing carbonaceous mudstone, sieving with a 400-mesh sieve, and taking undersize to obtain carbonaceous mudstone powder;
s2, uniformly mixing 20 parts of the carbonaceous shale powder obtained in the step S1 and 30 parts of the plant extract by weight, carrying out ultrasonic treatment for 30 minutes by using an ultrasonic instrument with the power of 100W and the frequency of 25kHz, filtering, and drying a filter cake at 60 ℃ for 10 hours to obtain the modified antibacterial material.
The preparation method of the plant extract comprises the following steps:
crushing: crushing the dendrobium officinale, and sieving with a 200-mesh sieve to obtain dendrobium officinale powder;
II, extraction: adding 20 parts by weight of the dendrobium officinale powder obtained in the step I and 0.5 part by weight of cellulase into 100 parts by weight of water, carrying out enzyme extraction for 1 hour, heating to 100 ℃, carrying out high-temperature boiling extraction for 2 hours, and filtering to obtain filtrate to obtain plant extract.
Example 2
A preparation method of a long-acting antibacterial, mildewproof and algae-resistant coating comprises the following steps:
(1) uniformly mixing 30 parts of water, 2 parts of wetting agent, 30 parts of emulsion, 4 parts of dispersing agent, 4 parts of antifreezing agent and 8 parts of modified antibacterial material in parts by weight, and stirring at the rotating speed of 200r/min for 1 hour to form a mixed solution A;
(2) stirring the mixed solution A obtained in the step (1) for 30 minutes at the rotating speed of 8000r/min, then transferring to a high-speed grinder, and grinding for 30 minutes at the rotating speed of 11000r/min to form mixed solution B;
(3) adding 2 parts by weight of thickening agent and 0.5 part by weight of defoaming agent into the mixed solution B obtained in the step (2), stirring at the rotating speed of 400r/min for 10 minutes, sieving by using a 100-mesh screen, and taking undersize products to obtain the long-acting antibacterial mildew-proof algae-resistant coating.
The wetting agent is polyether siloxane copolymer AKN-1070.
The emulsion is an acrylic emulsion.
The dispersing agent is polydimethylsiloxane.
The antifreezing agent is propylene glycol.
The thickening agent is bentonite.
The defoaming agent is dimethyl silicone oil.
The preparation method of the modified antibacterial material comprises the following steps:
s1, crushing carbonaceous mudstone, sieving with a 400-mesh sieve, and taking undersize to obtain carbonaceous mudstone powder;
s2, uniformly mixing 20 parts of the carbonaceous shale powder obtained in the step S1, 10 parts of the modifier and 30 parts of the plant extract by weight, carrying out ultrasonic treatment for 30 minutes by using an ultrasonic instrument with the power of 100W and the frequency of 25kHz, filtering, and drying a filter cake for 10 hours at the temperature of 60 ℃ to obtain the modified antibacterial material.
The preparation method of the modifier comprises the following steps:
w1: dissolving 3 parts by weight of isocyanuric acid in 50 parts by weight of water to form a solution I;
w2: adding 0.8 part of sodium hydroxide into the solution I by weight, and stirring at the rotating speed of 600r/min for 30 minutes to form a mixed solution II;
w3: dissolving 1.1 parts by weight of 3-chloroglycerol in 50 parts by weight of water to form a solution III;
w4: and (2) dropwise adding 50 parts of the solution III into 50 parts of the mixed solution II at the rate of 1 drop/second in parts by weight to obtain a mixed solution IV, adjusting the pH of the mixed solution IV to 6.0 by using 1M sulfuric acid aqueous solution, and stirring at the rotating speed of 600r/min for 12 hours to obtain the modifier.
The preparation method of the plant extract comprises the following steps:
i, crushing: pulverizing herba Dendrobii, and sieving with 200 mesh sieve to obtain herba Dendrobii powder;
II, extraction: adding 20 parts by weight of the dendrobium officinale powder obtained in the step I and 0.5 part by weight of cellulase into 100 parts by weight of water, carrying out enzyme extraction for 1 hour, heating to 100 ℃, carrying out high-temperature boiling extraction for 2 hours, and filtering to obtain filtrate to obtain plant extract.
Example 3
A preparation method of a long-acting antibacterial, mildewproof and algae-resistant coating comprises the following steps:
(1) uniformly mixing 30 parts of water, 2 parts of wetting agent, 30 parts of emulsion, 4 parts of dispersing agent, 4 parts of antifreezing agent and 8 parts of modified antibacterial material in parts by weight, and stirring at the rotating speed of 200r/min for 1 hour to form a mixed solution A;
(2) stirring the mixed solution A obtained in the step (1) for 30 minutes at the rotating speed of 8000r/min, then transferring to a high-speed grinder, and grinding for 30 minutes at the rotating speed of 11000r/min to form mixed solution B;
(3) adding 2 parts by weight of thickening agent and 0.5 part by weight of defoaming agent into the mixed solution B obtained in the step (2), stirring at the rotating speed of 400r/min for 10 minutes, sieving by using a 100-mesh screen, and taking undersize products to obtain the long-acting antibacterial mildew-proof algae-resistant coating.
The wetting agent is polyether siloxane copolymer AKN-1070.
The emulsion is an acrylic emulsion.
The dispersing agent is polydimethylsiloxane.
The antifreezing agent is propylene glycol.
The thickening agent is bentonite.
The defoaming agent is dimethyl silicone oil.
The preparation method of the modified antibacterial material comprises the following steps:
s1, crushing carbonaceous mudstone, sieving with a 400-mesh sieve, and taking undersize to obtain carbonaceous mudstone powder;
s2, uniformly mixing 20 parts of the carbonaceous shale powder obtained in the step S1, 10 parts of the modifier and 30 parts of the plant extract by weight, carrying out ultrasonic treatment for 30 minutes by using an ultrasonic instrument with the power of 100W and the frequency of 25kHz, filtering, and drying a filter cake for 10 hours at the temperature of 60 ℃ to obtain the modified antibacterial material.
The preparation method of the modifier comprises the following steps:
w1: dissolving 3 parts by weight of isocyanuric acid in 50 parts by weight of water to form a solution I;
w2: adding 0.8 part of sodium hydroxide into the solution I by weight, and stirring at the rotating speed of 600r/min for 30 minutes to form a mixed solution II;
w3: dissolving 1.1 parts by weight of 3-chloroglycerol in 50 parts by weight of water to form a solution III;
w4: and (2) dropwise adding 50 parts of the solution III into 50 parts of the mixed solution II at the rate of 1 drop/second in parts by weight to obtain a mixed solution IV, adjusting the pH of the mixed solution IV to 6.0 by using 1M sulfuric acid aqueous solution, then adding 2-4 parts of a functional auxiliary agent, and stirring at the rotating speed of 600r/min for 12 hours to obtain the modifier.
The functional auxiliary agent is prodigiosin.
The preparation method of the plant extract comprises the following steps:
crushing: crushing the dendrobium officinale, and sieving with a 200-mesh sieve to obtain dendrobium officinale powder;
II, extraction: adding 20 parts by weight of the dendrobium officinale powder obtained in the step I and 0.5 part by weight of cellulase into 100 parts by weight of water, carrying out enzyme extraction for 1 hour, heating to 100 ℃, carrying out high-temperature boiling extraction for 2 hours, and filtering to obtain filtrate to obtain plant extract.
Example 4
A preparation method of a long-acting antibacterial, mildewproof and algae-resistant coating comprises the following steps:
(1) uniformly mixing 30 parts of water, 2 parts of wetting agent, 30 parts of emulsion, 4 parts of dispersing agent, 4 parts of antifreezing agent and 8 parts of modified antibacterial material in parts by weight, and stirring at the rotating speed of 200r/min for 1 hour to form a mixed solution A;
(2) stirring the mixed solution A obtained in the step (1) for 30 minutes at the rotating speed of 8000r/min, then transferring to a high-speed grinder, and grinding for 30 minutes at the rotating speed of 11000r/min to form mixed solution B;
(3) adding 2 parts by weight of thickening agent and 0.5 part by weight of defoaming agent into the mixed solution B obtained in the step (2), stirring at the rotating speed of 400r/min for 10 minutes, sieving by using a 100-mesh screen, and taking undersize products to obtain the long-acting antibacterial mildew-proof algae-resistant coating.
The wetting agent is polyether siloxane copolymer AKN-1070.
The emulsion is an acrylic emulsion.
The dispersing agent is polydimethylsiloxane.
The antifreezing agent is propylene glycol.
The thickening agent is bentonite.
The defoaming agent is dimethyl silicone oil.
The preparation method of the modified antibacterial material comprises the following steps:
s1, crushing carbonaceous mudstone, sieving with a 400-mesh sieve, and taking undersize to obtain carbonaceous mudstone powder;
s2, uniformly mixing 20 parts of the carbonaceous shale powder obtained in the step S1, 10 parts of the modifier and 30 parts of the plant extract by weight, carrying out ultrasonic treatment for 30 minutes by using an ultrasonic instrument with the power of 100W and the frequency of 25kHz, filtering, and drying a filter cake for 10 hours at the temperature of 60 ℃ to obtain the modified antibacterial material.
The preparation method of the modifier comprises the following steps:
w1: dissolving 3 parts by weight of isocyanuric acid in 50 parts by weight of water to form a solution I;
w2: adding 0.8 part of sodium hydroxide into the solution I by weight, and stirring at the rotating speed of 600r/min for 30 minutes to form a mixed solution II;
w3: dissolving 1.1 parts by weight of 3-chloroglycerol in 50 parts by weight of water to form a solution III;
w4: and (2) dropwise adding 50 parts of the solution III into 50 parts of the mixed solution II at the rate of 1 drop/second in parts by weight to obtain a mixed solution IV, adjusting the pH of the mixed solution IV to 6.0 by using 1M sulfuric acid aqueous solution, then adding 2-4 parts of a functional auxiliary agent, and stirring at the rotating speed of 600r/min for 12 hours to obtain the modifier.
The functional assistant is pyocin.
The preparation method of the plant extract comprises the following steps:
crushing: crushing the dendrobium officinale, and sieving with a 200-mesh sieve to obtain dendrobium officinale powder;
II, extraction: adding 20 parts by weight of the dendrobium officinale powder obtained in the step I and 0.5 part by weight of cellulase into 100 parts by weight of water, carrying out enzyme extraction for 1 hour, heating to 100 ℃, carrying out high-temperature boiling extraction for 2 hours, and filtering to obtain filtrate to obtain plant extract.
Example 5
A preparation method of a long-acting antibacterial, mildewproof and algae-resistant coating comprises the following steps:
(1) uniformly mixing 30 parts of water, 2 parts of wetting agent, 30 parts of emulsion, 4 parts of dispersing agent, 4 parts of antifreezing agent and 8 parts of modified antibacterial material in parts by weight, and stirring at the rotating speed of 200r/min for 1 hour to form a mixed solution A;
(2) stirring the mixed solution A obtained in the step (1) for 30 minutes at the rotating speed of 8000r/min, then transferring to a high-speed grinder, and grinding for 30 minutes at the rotating speed of 11000r/min to form mixed solution B;
(3) adding 2 parts by weight of thickening agent and 0.5 part by weight of defoaming agent into the mixed solution B obtained in the step (2), stirring at the rotating speed of 400r/min for 10 minutes, sieving by using a 100-mesh screen, and taking undersize products to obtain the long-acting antibacterial mildew-proof algae-resistant coating.
The wetting agent is polyether siloxane copolymer AKN-1070.
The emulsion is an acrylic emulsion.
The dispersing agent is polydimethylsiloxane.
The antifreezing agent is propylene glycol.
The thickening agent is bentonite.
The defoaming agent is dimethyl silicone oil.
The preparation method of the modified antibacterial material comprises the following steps:
s1, crushing carbonaceous mudstone, sieving with a 400-mesh sieve, and taking undersize to obtain carbonaceous mudstone powder;
s2, 20 parts by weight of the carbonaceous shale powder obtained in the step S1, 10 parts by weight of the modifier and 30 parts by weight of the plant extract are subjected to ultrasonic treatment for 30 minutes by using an ultrasonic instrument with the power of 100W and the frequency of 25kHz, and after filtration, a filter cake is dried for 10 hours at the temperature of 60 ℃ to obtain the modified antibacterial material.
The preparation method of the modifier comprises the following steps:
w1: dissolving 3 parts by weight of isocyanuric acid in 50 parts by weight of water to form a solution I;
w2: adding 0.8 part of sodium hydroxide into the solution I by weight, and stirring at the rotating speed of 600r/min for 30 minutes to form a mixed solution II;
w3: dissolving 1.1 parts by weight of 3-chloroglycerol in 50 parts by weight of water to form a solution III;
w4: and (2) dropwise adding 50 parts of the solution III into 50 parts of the mixed solution II at the rate of 1 drop/second in parts by weight to obtain a mixed solution IV, adjusting the pH of the mixed solution IV to 6.0 by using 1M sulfuric acid aqueous solution, then adding 2-4 parts of a functional auxiliary agent, and stirring at the rotating speed of 600r/min for 12 hours to obtain the modifier.
The functional auxiliary agent is a mixture of prodigiosin and pyocyanin a mass ratio of 1: 1.6.
The preparation method of the plant extract comprises the following steps:
crushing: crushing the dendrobium officinale, and sieving with a 200-mesh sieve to obtain dendrobium officinale powder;
II, extraction: adding 20 parts by weight of the dendrobium officinale powder obtained in the step I and 0.5 part by weight of cellulase into 100 parts by weight of water, carrying out enzyme extraction for 1 hour, heating to 100 ℃, carrying out high-temperature boiling extraction for 2 hours, and filtering to obtain filtrate to obtain plant extract.
Test example 1
The long-acting antibacterial, mildewproof and anti-algae paint in the examples is subjected to an antibacterial test, the test standard adopts GB/T21866-. Selecting a test board without paint as a blank board; a 2g sample was selected to be uniformly coated on the test panel as an antimicrobial coating test panel. Selecting strains: staphylococcus aureus (Latin scientific name: Staphylococcus aureus, AS1.89), Escherichia coli (Latin scientific name: Escherichia coli, AS 1.90). 0.4mL of test bacterial liquid is respectively dripped on a blank plate and an antibacterial coating test plate, the blank plate and the antibacterial coating test plate are cultured for 24 hours at the temperature of 37 ℃ and the relative humidity RH of more than 90 percent, the blank plate and the antibacterial coating test plate after 24 hours of culture are taken out for testing the number of recovered bacteria, and the test results are shown in Table 1.
Table 1: antibacterial testing
Note: the antibacterial property is more than or equal to 99 percent and is I grade, and the antibacterial property is more than or equal to 90 percent and less than or equal to 99 percent and is II grade;
the antibacterial durability of more than or equal to 95 percent is grade I, and the antibacterial durability of more than or equal to 85 percent and less than or equal to 95 percent is grade II;
test example 2
The long-acting antibacterial, mildew-proof and algae-resistant coating in the embodiment is subjected to mildew-proof test, an aluminum plate with the thickness of 1mm is selected from an original test plate of GB/T1741-2007 "determination method of mildew resistance of paint film", a small block with the size of 50mm multiplied by 50mm is cut, the surface of the small block is roughened by abrasive paper, a panel is cleaned by alcohol, the small block is dried, and 2g of sample is uniformly coated on the test plate. Test strain selection: 1. aspergillus niger: latin's name: aspergillus niger, CICC 2377; 2. and (3) aspergillus flavus: latin learning name: aspergillus flavus, CICC 2219; 3. chaetomium globosum: latin learning name: chaetomium globosum, CICC 2480. The test results are shown in Table 2.
Table 2: mildew resistance test
Note: level 0: no obvious mildew growth occurs under the magnification of 50 times;
level 1: mildew cannot be seen or is difficult to see by the naked eyes, but obvious mildew can be seen under a magnifying glass;
and 2, stage: the mold growth can be seen by naked eyes, and the coverage area on the surface of the sample is 10-30%;
and 3, level: the mold growth can be seen by naked eyes, and the coverage area on the surface of the sample is 30-60 percent;
4, level: mold growth was evident to the naked eye with coverage greater than 60% on the surface of the sample.
Test example 3
The long-acting antibacterial, mildewproof and algae-resistant coating in the examples and the comparative examples is subjected to an algae resistance test, the test standard is GB/T21353-2008 'determination method for algae resistance of paint film', an original test plate selects an aluminum plate with the thickness of 1mm, small blocks with the size of 50mm multiplied by 50mm are cut, the surface of the small blocks is roughened by abrasive paper, the panel is cleaned by alcohol, the panel is dried, and 2g of samples are uniformly coated on the test plate. Test algae species selection: 1. chlorella: latin learning name: chlorella vulgaris, ATCC 11468; 2. and (3) carrying out filaria: latin learning name: ulothrix sp, ATCC 30443; 3. scenedesmus quadricaudatus: latin learning name: scenedesmus aquaticuuda, ATCC 11460; 4. oscillatoria: latin learning name: oscillatoia sp, ATCC 29135. The test results are shown in Table 3.
Table 3: anti-algae assay
Note: level 0: no growth occurs;
level 1: micro-scale growth, wherein the growth area S is less than 10 percent;
and 2, stage: slightly growing, wherein the growth area S is 10-30%;
and 3, level: moderate growth, the growth area S is 30-60%;
4, level: the growth is severe, and the growth area S is more than or equal to 60 percent.
Example 2 a modifier is used to modify carbonaceous mudstone, isocyanuric acid and 3-chloroglycerol in the modifier undergo nucleophilic substitution, an N-H bond in the structure of the modifier is chlorinated into an N-Cl bond, the N-Cl bond is ionized to generate free active chlorine, and the active chlorine inhibits and destroys enzymes required by the survival of microorganisms, so that the metabolism of the microorganisms is influenced, the microorganisms are inactivated, and the effects of mite removal and sterilization are achieved. Compared with the embodiment 2, the embodiment 3-5 respectively adds the prodigiosin, the pyocin and the compound of the prodigiosin and the pyocin as the functional auxiliary agents, the amino structure of the functional auxiliary agents and the carbonyl in the isonitrile uric acid generate nucleophilic addition reaction, and the electron cloud density beside the reacted N-Cl bond is changed, so that the N-Cl bond is more easily broken, free active chlorine is released, and the sterilization effect is realized; meanwhile, the functional additive is connected to the modifier through carbonyl affinity addition reaction, and the prodigiosin in the functional additive has obvious effect on mildew resistance; the pyocin has obvious algae-resistant effect, the molecular polarity of the prodigiosin is strong, so that pyocin molecules are polarized, induced dipole moment is generated and mutually attracted, the change of electron cloud density is enhanced, the N-Cl bond breakage is facilitated, and the antibacterial performance is further enhanced.
Claims (10)
1. A preparation method of a long-acting antibacterial, mildewproof and algae-resistant coating is characterized by comprising the following steps:
(1) uniformly mixing 20-40 parts of water, 1-2.5 parts of wetting agent, 20-40 parts of emulsion, 2-6 parts of dispersing agent, 2-6 parts of antifreezing agent and 5-10 parts of modified antibacterial material in parts by weight, and stirring at the rotating speed of 150-300 r/min for 0.5-1.5 hours to form a mixed solution A;
(2) stirring the mixed solution A obtained in the step (1) at a rotating speed of 600-1000 r/min for 20-40 minutes, then transferring the mixed solution A into a high-speed grinding machine, and grinding the mixed solution A at a rotating speed of 10000-12000 r/min for 20-40 minutes to form a mixed solution B;
(3) adding 1-3 parts by weight of thickening agent and 0.4-0.6 part by weight of defoaming agent into the mixed liquid B obtained in the step (2), stirring at the rotating speed of 300-500 r/min for 8-15 minutes, sieving by using a 80-150 mesh sieve, and taking undersize products to obtain the long-acting antibacterial mildew-proof algae-resistant coating.
2. The preparation method of the long-acting antibacterial, mildewproof and algae-resistant coating as claimed in claim 1, wherein the preparation method of the modified antibacterial material comprises the following steps:
s1, crushing the carbonaceous mudstone, sieving with a 300-500-mesh sieve, and taking undersize to obtain carbonaceous mudstone powder;
s2, uniformly mixing 15-25 parts by weight of the carbonaceous shale powder obtained in the step S1, 5-15 parts by weight of the modifier and 20-40 parts by weight of the plant extract, carrying out ultrasonic treatment for 20-40 minutes, wherein the ultrasonic power is 80-120W and the ultrasonic frequency is 20-30 kHz, filtering, and drying the filter cake at 50-70 ℃ for 8-12 hours to obtain the modified antibacterial material.
3. The preparation method of the long-acting antibacterial, mildewproof and algae-resistant coating as claimed in claim 2, wherein the preparation method of the modifier comprises the following steps:
w1: dissolving 2-4 parts by weight of isocyanuric acid in 50-80 parts by weight of water to form a solution I;
w2: adding 0.6-1.0 part by weight of sodium hydroxide into the solution I, and stirring at the rotating speed of 500-700 r/min for 20-40 minutes to form a mixed solution II;
w3: dissolving 1-2 parts by weight of 3-chloroglycerol in 50-80 parts by weight of water to form a solution III;
w4: dropping 40-60 parts of the solution III into 40-60 parts of the mixed solution II at a rate of 1-2 drops/second according to parts by weight to obtain a mixed solution IV, adjusting the pH of the mixed solution IV to 5.8-6.2 by using 0.5-1.0M sulfuric acid aqueous solution, then adding 2-4 parts of a functional auxiliary agent, and stirring at a rotating speed of 500-700 r/min for 10-14 hours to obtain the modifier.
4. The method for preparing the long-acting antibacterial, mildewproof and algae-resistant coating according to claim 3, wherein the functional auxiliary agent is at least one of prodigiosin and pyocyanin.
5. The preparation method of the long-acting antibacterial, mildewproof and algae-resistant coating as claimed in claim 2, wherein the preparation method of the plant extract comprises the following steps:
crushing: crushing the dendrobium officinale, and sieving with a sieve of 150-250 meshes to obtain dendrobium officinale powder;
II, extraction: according to the weight parts, 10-30 parts of the dendrobium officinale powder obtained in the step I and 0.4-0.6 part of cellulase are added into 80-120 parts of water, after the enzyme is extracted for 0.5-1.5 hours, the mixture is heated to 90-120 ℃, boiled and extracted at high temperature for 1.5-2.5 hours, and filtrate is obtained after filtration, so that plant extract is obtained.
6. The method for preparing the long-acting antibacterial, mildewproof and algae-resistant coating according to claim 1, wherein the wetting agent is at least one of alkyl sulfate wetting agents, sulfonate wetting agents, fatty acid wetting agents, polyvinyl alkylphenol ether wetting agents, polyoxyethylene fatty alcohol ether wetting agents and polyether siloxane copolymer wetting agents.
7. The method for preparing the long-acting antibacterial, mildewproof and algae-resistant coating according to claim 1, wherein the emulsion is at least one of acrylic emulsion and styrene-acrylic emulsion.
8. The method for preparing the long-acting antibacterial, mildewproof and algae-resistant coating according to claim 1, wherein the dispersant is at least one of polydimethylsiloxane, vinyl distearamide and barium stearate.
9. The method for preparing the long-acting antibacterial, mildewproof and algae-resistant coating according to claim 1, wherein the antifreezing agent is at least one of propylene glycol, methanol, ethanol, isopropanol, ethylene glycol, diethylene glycol, butyl glycol ether, butyl propylene glycol ether, butyl ethylene glycol acetate, methylene chloride, 1-dichloroethane, 1, 2-dichloroethane, dimethyl sulfoxide, formamide, calcium chloride, sodium acetate and magnesium chloride.
10. A long-acting antibacterial, mildewproof and algae-resistant coating prepared by the method as claimed in any one of claims 1 to 9.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058945A (en) * | 2013-01-17 | 2013-04-24 | 江南大学 | Halide amine antibacterial agent based on cyanuric acid and synthesis method and application thereof |
| CN106832878A (en) * | 2016-12-30 | 2017-06-13 | 嘉兴学院 | A kind of dyeing polyurethane resin and its application in synthetic leather |
| CN111303057A (en) * | 2020-03-26 | 2020-06-19 | 南通大学 | Phenazine derivative with nitrogen-containing side chain and preparation method and application thereof |
| CN112175625A (en) * | 2020-10-29 | 2021-01-05 | 中煤科工集团沈阳设计研究院有限公司 | Preparation and use methods of modifier for surface soil substitute material of opencast coal mine |
| CN113388045A (en) * | 2020-03-13 | 2021-09-14 | 宁波易中禾药用植物研究院有限公司 | Extraction method of dendrobium officinale with antibacterial effect and compound killing preparation |
-
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- 2022-02-10 CN CN202210126226.0A patent/CN114437598A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058945A (en) * | 2013-01-17 | 2013-04-24 | 江南大学 | Halide amine antibacterial agent based on cyanuric acid and synthesis method and application thereof |
| CN106832878A (en) * | 2016-12-30 | 2017-06-13 | 嘉兴学院 | A kind of dyeing polyurethane resin and its application in synthetic leather |
| CN113388045A (en) * | 2020-03-13 | 2021-09-14 | 宁波易中禾药用植物研究院有限公司 | Extraction method of dendrobium officinale with antibacterial effect and compound killing preparation |
| CN111303057A (en) * | 2020-03-26 | 2020-06-19 | 南通大学 | Phenazine derivative with nitrogen-containing side chain and preparation method and application thereof |
| CN112175625A (en) * | 2020-10-29 | 2021-01-05 | 中煤科工集团沈阳设计研究院有限公司 | Preparation and use methods of modifier for surface soil substitute material of opencast coal mine |
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