CN113999333B - Modified fluorosilicone acrylate resin, antifouling and antibacterial coating and preparation method thereof - Google Patents

Modified fluorosilicone acrylate resin, antifouling and antibacterial coating and preparation method thereof Download PDF

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CN113999333B
CN113999333B CN202010738510.4A CN202010738510A CN113999333B CN 113999333 B CN113999333 B CN 113999333B CN 202010738510 A CN202010738510 A CN 202010738510A CN 113999333 B CN113999333 B CN 113999333B
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acrylate resin
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antibacterial
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antifouling
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CN113999333A (en
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李佳怡
薛嘉晓
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Shanghai Huzheng Industrial Co ltd
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    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
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Abstract

The invention discloses a modified fluorosilicone acrylate resin and an antifouling and antibacterial coating. The antibacterial modified fluorosilicone acrylic resin is obtained through acrylate monomer free radical polymerization reaction and modified grafting reaction. And uniformly mixing the modified fluorosilicone acrylate resin, the silane coated nano silver particles, the dispersing agent, the leveling agent, the coupling agent and the filler in a solvent to obtain the coating with the antifouling and antibacterial functions. The antifouling and antibacterial coating has excellent adhesive force, wear resistance, hydrophobicity, antibacterial property and disease resistance on the surfaces of plastic and glass substrates, and has important value in the aspects of mobile phones, computers, household appliances, glass buildings or products and the like. The invention also discloses a preparation method of the modified fluorosilicone acrylate resin and the antifouling and antibacterial paint.

Description

Modified fluorosilicone acrylate resin, antifouling and antibacterial coating and preparation method thereof
Technical Field
The invention belongs to the technical field of functional coatings, and relates to a modified fluorosilicone acrylate resin and an antifouling and antibacterial coating which can be effectively applied to the field of protective functions of plastics and glass. In addition, the invention also relates to a preparation method of the modified fluorosilicone acrylate resin and the antifouling and antibacterial coating.
Background
Electronic devices such as mobile phones and computers have become an indispensable big tool and assistant, and it is necessary to keep the surfaces clean and healthy. The current novel coronavirus COVID-19 is global in a high-concentration environment, and the requirements on antifouling and antibacterial are stronger, so that the novel coronavirus COVID has very important significance for guaranteeing the health and safety of people and promoting the economic development.
Antibacterial materials play an important role in preventing pathogen infection and preventing disease transmission. Inorganic antibacterial materials such as silver, copper, zinc and the like are commonly used. Silver ion antibacterial materials are widely used because of the characteristics of broad-spectrum efficient antibacterial property, no drug resistance and the like, and meanwhile, silver ions have good inhibition and killing effects on viruses; however, silver is susceptible to oxidative discoloration, affecting the appearance of the substrate, and methods such as carrier binding are generally employed to maintain stability. (Zhao Xin, zhu Jianjian, li Meng, liu Yafei. Application and development of antibacterial agent in China. Material guide A: reviewed in [ J ].2016,30 (4): 68-73.). In terms of organic antibacterial, some special organic matters such as biguanides, phenol ethers, thiazoles, quaternary ammonium salts and the like can react with protein or phospholipid groups such as mercapto groups and the like to destroy bacterial metabolic activity, and the antibacterial agent has rapid and powerful bactericidal capability, good color stability, and generally has defects in terms of antibacterial broad spectrum, biotoxicity, drug resistance and the like. (Ji J, zhang W.bacterial behaviors on polymer surfaces with organic and inorganic antimicrobial compositions. Journal of Biomedical Materials Research Part A [ J ].2009, 88:448-53.). As described above, today inorganic or organic single antimicrobial means are difficult to cope with complex practical environments; meanwhile, the compatibility and synergy of inorganic-organic materials are important considerations for antimicrobial materials.
The organic matters containing the fluorine-silicon component have the characteristic of low surface energy, can realize the effect of hydrophobic and oleophobic, and have wide application in the aspect of antifouling materials. (Qi Gang, an Qiufeng, zhang Jiang. Preparation of photo-curable nano hybrid fluorosilicone resins and performance studies. Coating industry [ J ].2018,48 (1): 54-58.) many anti-fouling coatings employ fluorosilicone resin systems; on the basis of ensuring the transparency, the binding capacity of a base material, the compatibility of a system and the like, the anti-fouling, antibacterial and anti-virus coating with excellent composition performance of a fluorosilicone resin system and an antibacterial material can be realized.
Chinese patent CN201510643945 discloses a nano antibacterial fingerprint-proof medicinal liquid material, which comprises main components of fluorobutyl ether, perfluoro silicone oil, perfluoro polyether alkoxysilane, nano silver ion particles, etc. The antibacterial anti-fingerprint liquid medicine material is obtained by physical mixing, is applied to the aspects such as mobile phone cover plate films and the like, and has simple and convenient processing. The system stability, the antibacterial and antivirus comprehensive high efficiency of the liquid medicine material can be further improved. Chinese patent CN104177573 discloses a quaternary ammonium salt-fluorosilicone acrylate block copolymer and uses it in antimicrobial coatings. The copolymer is a macromolecular chain transfer agent through polysiloxane, and a multiblock copolymer is obtained through reversible addition-fragmentation chain transfer free radical polymerization (RAFT); then the quaternization reaction is carried out by 1-iodooctane. The reaction is mild and controllable, the polymer structure is definite, and the polymer has good film forming property and antibacterial property. The overall durability of the antibacterial effect can be improved as well. Chinese patent CN104946061 discloses a modified silicone-acrylic resin anti-fouling antibacterial paint special for ships, which realizes the effects of high hardness, anti-fouling, antibacterial and marine organism adhesion inhibition by uniformly mixing modified silicone-acrylic resin, fluorine-containing copolymer, nano silver, carbon nanotube, nano ferric oxide, nano zinc oxide, lanthanum oxide, 4, 5-dichloro-2-n-octyl-3-isothiazolinone and other reagent auxiliaries. The ship-specific marine oil is special for ships, has more components and can be complemented in the aspects of applicability and simplicity.
Disclosure of Invention
In view of the foregoing deficiencies of the prior art and methods, it is desirable, in accordance with embodiments of the present invention, to provide a modified fluorosilicone acrylate resin, and in turn, an antifouling and antibacterial coating for plastic or glass material surfaces that has excellent properties in terms of hydrophobicity, abrasion resistance, antibacterial properties, and the like. In addition, the invention also hopes to provide a preparation method of the modified fluorosilicone acrylate resin and the antifouling and antibacterial coating.
According to an embodiment, the structural formula of the modified fluorosilicone acrylate resin provided by the invention can be expressed as follows:
in formula 1, each R group represents respectively:
R 1 ：-H，-CH 3 ；
R 2 ：-H,-CH 3 ,-CH 2 CH 2 CH 2 CH 3 ；
R 3 ：-H，-CH 3 ；
R 4 ：-CF 2 CHFCF 3 ，-CH 2 CH 2 CF 3 ，-CH 2 CH 2 CF 2 CF 3 ，-CH 2 CH 2 CF 2 CF 2 CF 3 ；
R 5 ：
R 6 ：
wherein a is an integer of 30-80, b is an integer of 5-20, c is an integer of 5-15, d is an integer of 5-15, and e is an integer of 1-10.
According to an embodiment, the preparation method of the modified fluorosilicone acrylate resin provided by the invention comprises the following steps:
(1) According to the mass ratio, 10-20 parts of methyl methacrylate, 10-30 parts of acrylic acid, 10-30 parts of n-butyl acrylate and 5-10 parts of fluorine-containing monomer are dissolved in 100-500 parts of solvent, stirred and introduced with nitrogen for 0.5-1h, added with 0.1-0.5 part of azodiisobutyronitrile and stirred at 40-80 ℃ for reaction for 18-36h.
(2) After natural cooling, the reaction solution is concentrated and poured into a large amount of normal hexane for precipitation, ethanol cleaning and centrifugation are repeated three times, and the reaction solution is placed in a drying oven at 50-80 ℃ for drying for 12-24 hours.
(3) According to the mass ratio, 5-10 parts of the initial product is redissolved in 50-200 parts of solvent, 0.5-1.5 parts of catalyst and 1-2 parts of condensing agent are sequentially added, a few drops of triethylamine are dripped, 5-15 parts of antibacterial agent are added after stirring for 0.5-1h, the reaction is carried out for 5-24h at 25-50 ℃, then 5-15 parts of siloxane is added, and the reaction is continued for 5-24h.
(4) And after the reaction solution is naturally cooled, a large amount of n-hexane is poured into the reaction solution for precipitation, ethanol is used for cleaning and centrifuging for three times, and the reaction solution is placed in a 50-80 ℃ oven for drying for 12-24 hours, so that the antibacterial modified fluorosilicone acrylate resin is obtained.
Preferably, in the preparation method of the modified fluorosilicone acrylate resin, the fluorine-containing monomer is selected from hexafluorobutyl methacrylate, perfluoromethyl ethyl acrylate, perfluoroethyl ethyl acrylate and perfluoropropyl ethyl acrylate; the solvent is selected from butyl acetate, cyclohexanone and methyl isobutyl ketone; the catalyst is selected from 4-dimethylaminopyridine, N-methyl morpholine and N-hydroxysuccinimide; the condensing agent is selected from 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride, 3-diethoxyphosphoryl-1, 2, 3-benzooxazol 4 (3H) -one and 2- (7-azabenzotriazol) -N, N, N ', N' -tetramethylurea hexafluorophosphate; the antibacterial agent is selected from 4-pyridine formyl biguanide, 3-pyridine formyl biguanide and 3-pyridine biguanide; the siloxane is monohydroxyethyl polydimethylsiloxane, and the number of the repeated units is 1-10.
According to the embodiment, the invention provides an antifouling and antibacterial coating, which comprises the following components in parts by mass: 40-70 parts of antibacterial modified fluorosilicone acrylate resin, 40-100 parts of solvent, 0.1-0.5 part of silane coated nano silver particles, 0.5-1.5 parts of dispersing agent, 0.2-1.5 parts of flatting agent, 0.2-2 parts of silane coupling agent and 10-20 parts of filler, wherein: the solvent is a mixed solution of butyl acetate, cyclohexanone and methyl isobutyl ketone in a volume ratio of 40:20:40, the dispersing agent is dipropylene glycol methyl ether, the leveling agent is polyether modified polydimethylsiloxane, the coupling agent is vinyl triethoxy siloxane, and the filler is a mixed component with the same mass ratio of nano zinc oxide, nano silicon dioxide and nano aluminum oxide.
The preparation method of the silane coated nano silver particles in the antifouling and antibacterial coating provided by the invention comprises the following steps: adding 10-15 parts of nano silver into 100-200 parts of ethanol according to the mass ratio, and performing ultrasonic treatment for 0.5h to form a dispersion liquid; adding 0.5-1 part of ethyl silicate into another 50-100 parts of ethanol, and adjusting the pH to 4-5; adding the nano silver dispersion liquid into ethyl silicate solution, stirring at 40-50 ℃ and carrying out ultrasonic treatment, reacting for 3 hours, centrifuging, repeatedly cleaning with ethanol for three times, and drying to obtain the nano silver product.
According to an embodiment, the preparation method of the antifouling and antibacterial paint provided by the invention comprises the following steps: weighing according to the components and the proportion, adding the dispersing agent into a solvent accounting for 70% -80% of the total addition amount, stirring for 5min at the speed of 500r/min, then adding the antibacterial modified fluorosilicone acrylate resin, the silane coated nano silver particles, the leveling agent, the silane coupling agent and the filler, regulating the stirring speed to 1000-2000r/min, stirring for 0.5-2h, adding the residual solvent, continuously stirring for 0.5-1h, and sieving by a 200-mesh sieve to obtain the antifouling and antibacterial coating.
Compared with the prior art, the modified fluorosilicone acrylate resin has good antibacterial property, and the antifouling and antibacterial coating prepared by using the modified fluorosilicone acrylate resin has the following advantages: the organic-inorganic antibacterial and antivirus cooperativity has the characteristics of rapid broad-spectrum sterilization and lasting stability; the antifouling performance is superior.
Detailed Description
The invention will be further illustrated with reference to specific examples. These examples should be construed as merely illustrative of the present invention and not limiting the scope of the present invention. Various changes and modifications to the present invention may be made by one skilled in the art after reading the description herein, and such equivalent changes and modifications are intended to fall within the scope of the present invention as defined in the appended claims.
The raw materials used in the following examples of the present invention are commercially available products unless otherwise indicated.
Example 1
Firstly, preparing antibacterial modified fluorosilicone acrylate resin:
(1) 20g of methyl methacrylate, 15g of acrylic acid, 20g of n-butyl acrylate and 5g of hexafluorobutyl methacrylate are dissolved in 800ml of an isovolumetric mixed solvent of butyl acetate and cyclohexanone, stirred and nitrogen is introduced for 1h, 0.2g of azodiisobutyronitrile is added, and the mixture is stirred and reacted for 24h at 45 ℃.
(2) After natural cooling, the reaction solution is concentrated and poured into a large amount of normal hexane for precipitation, ethanol cleaning and centrifugation are repeated three times, and the reaction solution is placed in an oven at 80 ℃ for drying for 12 hours.
(3) 10g of the initial product is redissolved in 150ml of an equal ratio mixed solvent of butyl acetate and cyclohexanone, 0.5g of 4-dimethylaminopyridine and 1g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride are sequentially added, a few drops of triethylamine are dripped, 10g of 4-pyridine formylbiguanide is added after stirring for 1h, reaction is carried out for 12h at 30 ℃, then 5g of monohydroxyethyl polydimethylsiloxane is added, and the reaction is continued for 12h.
(4) And after the reaction solution is naturally cooled, pouring a large amount of n-hexane for precipitation, washing with ethanol, centrifuging, repeating for three times, and drying in an oven at 80 ℃ for 12 hours to obtain the antibacterial modified fluorosilicone acrylate resin.
And then preparing the silicon-coated nano silver. Adding 10g of nano silver into 200ml of ethanol, and performing ultrasonic treatment for 0.5h to form a dispersion liquid; 0.8g of ethyl silicate was added to another 50ml of ethanol and the pH was adjusted to 4.5; adding the nano silver dispersion liquid into ethyl silicate solution, stirring at 40 ℃ and carrying out ultrasonic treatment, reacting for 3 hours, centrifuging, repeatedly cleaning with ethanol for three times, and drying to obtain a nano silver product.
And then proportioning and weighing the components: 50g of antibacterial modified fluorosilicone acrylate resin, 50g of mixed solution of butyl acetate, cyclohexanone and methyl isobutyl ketone in a volume ratio of 40:20:40, 0.1g of silane coated nano silver particles, 0.5g of dipropylene glycol methyl ether, 0.3g of polyether modified polydimethylsiloxane, 0.4g of vinyl triethoxysilane, 15g of nano zinc oxide, nano silicon dioxide and nano aluminum oxide.
Finally, preparing the functional coating. Adding a dispersing agent into a solvent accounting for 70% of the total addition amount, stirring for 5min at a speed of 500r/min, then adding antibacterial modified fluorosilicone acrylate resin, silane coated nano silver particles, dipropylene glycol methyl ether, polyether modified polydimethylsiloxane, vinyl triethoxysilane, nano zinc oxide, nano silicon dioxide, nano aluminum oxide and other mixtures, regulating the stirring speed to 1500r/min, stirring for 1h, adding the rest solvent, continuously stirring for 0.5h, and sieving with a 200-mesh sieve to obtain the antifouling and antibacterial coating.
Example 2
Firstly, preparing antibacterial modified fluorosilicone acrylate resin:
(1) 20g of methyl methacrylate, 20g of acrylic acid, 20g of n-butyl acrylate and 10g of perfluoromethyl ethyl acrylate are dissolved in 1000ml of an equal volume mixed solvent of butyl acetate, cyclohexanone and methyl isobutyl ketone, stirred and nitrogen is introduced for 1h, 0.2g of azodiisobutyronitrile is added, and the mixture is stirred and reacted for 36h at 40 ℃.
(2) After natural cooling, the reaction solution is concentrated and poured into a large amount of normal hexane for precipitation, ethanol cleaning and centrifugation are repeated three times, and the reaction solution is placed in an oven at 80 ℃ for drying for 12 hours.
(3) 10g of the initial product is redissolved in a mixed solvent, 0.5-g N-methyl morpholine and 1g of 3-diethoxyphosphoryl-1, 2, 3-benzoxazol-4 (3H) -ketone are sequentially added, a few drops of triethylamine are dripped, 10g of 4-pyridine formylbiguanide is added after stirring for 1H, reaction is carried out for 8H at 40 ℃, and then 10g of monohydroxy ethyl polydimethylsiloxane is added for continuous reaction for 12H.
(4) And after the reaction solution is naturally cooled, pouring a large amount of n-hexane for precipitation, washing with ethanol, centrifuging, repeating for three times, and drying in an oven at 80 ℃ for 12 hours to obtain the antibacterial modified fluorosilicone acrylate resin.
And then preparing the silicon-coated nano silver. Adding 10g of nano silver into 200ml of ethanol, and performing ultrasonic treatment for 0.5h to form a dispersion liquid; 0.7g of ethyl silicate was added to another 50ml of ethanol and the pH was adjusted to 4.5; adding the nano silver dispersion liquid into ethyl silicate solution, stirring at 40 ℃ and carrying out ultrasonic treatment, reacting for 3 hours, centrifuging, repeatedly cleaning with ethanol for three times, and drying to obtain a nano silver product.
And then proportioning and weighing the components: 50g of antibacterial modified fluorosilicone acrylate resin, 50g of mixed solution of butyl acetate, cyclohexanone and methyl isobutyl ketone in a volume ratio of 40:20:40, 0.1g of silane coated nano silver particles, 0.3g of dipropylene glycol methyl ether, 0.2g of polyether modified polydimethylsiloxane, 0.5g of vinyl triethoxysilane, 12g of nano zinc oxide, nano aluminum oxide and nano silicon dioxide.
Finally, preparing the functional coating. Adding a dispersing agent into a solvent accounting for 80% of the total addition amount, stirring for 5min at a speed of 500r/min, then adding antibacterial modified fluorosilicone acrylate resin, silane coated nano silver particles, dipropylene glycol methyl ether, polyether modified polydimethylsiloxane, vinyl triethoxysilane, nano zinc oxide, nano silicon dioxide, nano aluminum oxide and other mixtures, regulating the stirring speed to 2000r/min, stirring for 0.5h, adding the rest solvent, continuously stirring for 0.5h, and sieving with a 200-mesh sieve to obtain the antifouling and antibacterial coating.
Example 3
Firstly, preparing antibacterial modified fluorosilicone acrylate resin:
(1) 20g of methyl methacrylate, 20g of acrylic acid, 20g of n-butyl acrylate and 5g of perfluoropropyl ethyl acrylate are dissolved in 1000ml of an isovolumetric mixed solvent of butyl acetate and methyl isobutyl ketone, stirred and nitrogen is introduced for 1h, 0.2g of azodiisobutyronitrile is added, and the mixture is stirred and reacted for 18h at 50 ℃.
(2) After natural cooling, the reaction solution is concentrated and poured into a large amount of normal hexane for precipitation, ethanol cleaning and centrifugation are repeated three times, and the reaction solution is placed in an oven at 80 ℃ for drying for 12 hours.
(3) 10g of the initial product is redissolved in a mixed solvent, 0.5-g N-methyl morpholine and 1g of 2- (7-aza-benzotriazol) -N, N, N ', N' -tetramethyl urea hexafluorophosphate are sequentially added, a few drops of triethylamine are dripped, 15g of 3-pyridine formylbiguanide is added after stirring for 1h, reaction is carried out for 12h at 40 ℃, then 10g of monohydroxy ethyl polydimethylsiloxane is added, and the reaction is continued for 12h.
(4) And after the reaction solution is naturally cooled, pouring a large amount of n-hexane for precipitation, washing with ethanol, centrifuging, repeating for three times, and drying in an oven at 80 ℃ for 12 hours to obtain the antibacterial modified fluorosilicone acrylate resin.
And then preparing the silicon-coated nano silver. Adding 10g of nano silver into 200ml of ethanol, and performing ultrasonic treatment for 0.5h to form a dispersion liquid; 1g of ethyl silicate was added to another 80ml of ethanol and the pH was adjusted to 4.0; adding the nano silver dispersion liquid into ethyl silicate solution, stirring at 40 ℃ and carrying out ultrasonic treatment, reacting for 3 hours, centrifuging, repeatedly cleaning with ethanol for three times, and drying to obtain a nano silver product.
And then proportioning and weighing the components: 50g of antibacterial modified fluorosilicone acrylate resin, 50g of mixed solution of butyl acetate, cyclohexanone and methyl isobutyl ketone in a volume ratio of 40:20:40, 0.1g of silane coated nano silver particles, 0.5g of dipropylene glycol methyl ether, 0.3g of polyether modified polydimethylsiloxane, 0.5g of vinyl triethoxysilane, and 10g of mixed components in equal proportions of nano zinc oxide, nano silicon dioxide and nano aluminum oxide.
Finally, preparing the functional coating. Adding a dispersing agent into a solvent accounting for 70% of the total addition amount, stirring for 5min at a speed of 500r/min, then adding antibacterial modified fluorosilicone acrylate resin, silane coated nano silver particles, dipropylene glycol methyl ether, polyether modified polydimethylsiloxane, nano zinc oxide, vinyl triethoxysilane, nano silicon dioxide, nano aluminum oxide and other mixtures, regulating the stirring speed to 1000r/min, stirring for 2h, adding the rest solvent, continuing stirring for 1h, and sieving with a 200-mesh sieve to obtain the antifouling and antibacterial coating.
Test examples
Coating the paint in each embodiment on the surfaces of clean glass and plastic respectively; baking the glass sample at 130 ℃ for 30min to obtain a coating sample; the plastic sample was baked at 80℃for 120min to produce a coated sample. Each coating film was tested for hydrophobicity, adhesion, pencil hardness, abrasion resistance, antibacterial properties, and anti-virus effects. The hydrophobicity is tested by a full-automatic contact angle measuring instrument, the adhesive force is tested by a hundred-lattice method, the pencil hardness is tested according to the GB/T6739-2006 related standard detection test, the wear resistance is tested according to the GB/T1768-2006 related standard detection test, and the antibacterial property and the anti-disease toxicity are detected by SGS in a related way. As can be seen from the test results in Table 1, the properties of each coating are good, and the coating has good performances in the aspects of hydrophobicity, hardness, wear resistance, antistatic property, antibacterial property, disease resistance and the like, and has high application value in the related demand fields.
TABLE 1 coating Performance test of various examples

Claims (9)

1. The modified fluorosilicone acrylate resin is characterized by having a structural formula shown in formula 1:
in formula 1, R 1 is-H or-CH 3 ；R 2 is-H, -CH 3 or-CH 2 CH 2 CH 2 CH 3 ；R 3 is-H or-CH 3 ；R 4 is-CF 2 CHFCF 3 、-CH 2 CH 2 CF 3 、-CH 2 CH 2 CF 2 CF 3 or-CH 2 CH 2 CF 2 CF 2 CF 3 ；R 5 Is that R 6 Is->
a is an integer of 30-80, b is an integer of 5-20, c is an integer of 5-15, d is an integer of 5-15, and e is an integer of 1-10;
the preparation method of the modified fluorosilicone acrylate resin comprises the following steps:
(1) According to the mass ratio, 10-20 parts of methyl methacrylate, 10-30 parts of acrylic acid, 10-30 parts of n-butyl acrylate and 5-10 parts of fluorine-containing monomer are dissolved in 100-500 parts of solvent, stirred and introduced with nitrogen for 0.5-1h, added with 0.1-0.5 part of azodiisobutyronitrile and stirred at 40-80 ℃ for reaction for 18-36h;
(2) After natural cooling, concentrating the reaction solution, pouring a large amount of n-hexane for precipitation, washing with ethanol, centrifuging, repeating for three times, and drying in a drying oven at 50-80 ℃ for 12-24h;
(3) According to the mass ratio, 5-10 parts of the initial product is redissolved in 50-200 parts of solvent, 0.5-1.5 parts of catalyst and 1-2 parts of condensing agent are sequentially added, a few drops of triethylamine are dripped, 5-15 parts of antibacterial agent is added after stirring for 0.5-1h, the reaction is carried out for 5-24h at 25-50 ℃, then 5-15 parts of siloxane is added, and the reaction is continued for 5-24h;
(4) And (3) naturally cooling the reaction solution, pouring a large amount of n-hexane for precipitation, washing with ethanol, centrifuging, repeating for three times, and drying in a 50-80 ℃ oven for 12-24 hours to obtain the modified fluorosilicone acrylate resin.
2. The modified fluorosilicone acrylate resin of claim 1, wherein the fluorine-containing monomer is selected from the group consisting of hexafluorobutyl methacrylate, perfluoromethyl ethyl acrylate, perfluoroethyl ethyl acrylate, and perfluoropropyl ethyl acrylate.
3. The modified fluorosilicone acrylate resin of claim 1, wherein said solvent is selected from the group consisting of butyl acetate, cyclohexanone, and methyl isobutyl ketone.
4. The modified fluorosilicone acrylate resin of claim 1, wherein the catalyst is selected from the group consisting of 4-dimethylaminopyridine, N-methylmorpholine and N-hydroxysuccinimide.
5. The modified fluorosilicone acrylate resin according to claim 1, wherein said condensing agent is selected from the group consisting of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride, 3-diethoxyphosphoryl-1, 2, 3-benzoxazol 4 (3H) -one, and 2- (7-azabenzotriazol) -N, N' -tetramethylurea hexafluorophosphate.
6. The modified fluorosilicone acrylate resin according to claim 1, wherein said antimicrobial agent is selected from the group consisting of 4-picolyl biguanide, 3-picolyl biguanide, and 3-picolyl biguanide.
7. The modified fluorosilicone acrylate resin according to claim 1, wherein said siloxane is monohydroxyethyl polydimethylsiloxane having a repeating unit number of 1 to 10.
8. The antifouling and antibacterial coating is characterized by comprising the following components in parts by mass:
the modified fluorosilicone acrylate resin 40-70 according to claim 1-7,
40-100 parts of a solvent, wherein the solvent is,
silane coated nano silver particles 0.1-0.5,
0.5 to 1.5 percent of dispersing agent,
0.2 to 2 percent of leveling agent,
0.2 to 2 percent of coupling agent,
10 to 20 percent of filler and the like,
the solvent is a mixed solution of butyl acetate, cyclohexanone and methyl isobutyl ketone in a volume ratio of 40:20:40, the dispersing agent is dipropylene glycol methyl ether, the leveling agent is polyether modified polydimethylsiloxane, the coupling agent is vinyl triethoxy siloxane, and the filler is a mixed component with the same mass ratio of nano zinc oxide, nano silicon dioxide and nano aluminum oxide.
9. A preparation method of an antifouling and antibacterial coating is characterized by weighing the components in mass ratio in claim 8, adding a dispersing agent into a solvent accounting for 70% -80% of the total addition amount, stirring for 5min at a speed of 500r/min, then adding modified fluorosilicone acrylate resin, silane coated nano silver particles, a leveling agent, a silane coupling agent and a filler, regulating the stirring speed to 1000-2000r/min, stirring for 0.5-2h, adding the rest solvent, continuing stirring for 0.5-1h, and sieving with a 200-mesh sieve to obtain the antifouling and antibacterial coating.
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