Anti-bioadhesion high polymer material for filter bag and preparation method of anti-bioadhesion high polymer material

Abstract

The invention relates to the technical field of high polymer material preparation, and discloses an anti-bioadhesion high polymer material for a filter bag and a preparation method thereof, the anti-bioadhesion high polymer material comprises the following raw materials by mass: 50-60 parts of a hydrophobic monomer, 55-65 parts of a hydrophilic monomer, 80-100 parts of a high polymer, 5-10 parts of a reinforcing filler, 120-130 parts of a solvent, and 1-2 parts of an initiator. The hydrophobic monomer and the hydrophilic monomer form an acrylate-based amphoteric copolymer, a compact hydration barrier is generated on the surface of the material through hydrogen bonds and electrostatic interaction, the efficient anti-bioadhesion function is guaranteed, the contained hydrophilic groups can be combined with the reinforcing filler, so that the reinforcing filler is distributed on the surface of a material matrix, the acrylate-based amphoteric copolymer is compounded, and the anti-bioadhesion function is achieved. A compact hydration barrier is generated on the surface of a material matrix, and the interaction between biological pollutants and the material surface is weakened.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer material preparation, and specifically relates to an anti-bioadhesive polymer material for filter bags and a preparation method thereof. Background Art

[0002] Due to their excellent mechanical properties and mechanical durability, polymer materials are widely used in core components in fields such as industrial dust removal, water treatment, and medical protection, such as filter bags. Their surface anti-microbial adhesion performance directly determines their service life and safety. Bioadhesion is the process by which biological contaminants such as bacteria, polysaccharides, polypeptides, and proteins tightly bind to the material surface through non-specific or specific adsorption. Most anti-bioadhesive polymer materials are hydrophilically modified by coating methods such as nanomaterials, PEG, and zwitterionic polymers. There are mainly two methods for preparing such hydrophilic functional coatings: The first method is chemical grafting modification, and the coatings prepared by this method have high stability; the second method is physical adsorption. This coating preparation method is simple, but the coating has poor stability and is prone to falling off, posing a safety hazard.

[0003] Adding zinc-based metal-organic frameworks to polymer materials can increase membrane permeability, interfere with the activity of metabolic enzymes, and induce oxidative stress to achieve the effect of preventing microbial adhesion. However, the metal-organic frameworks cause pore collapse under external forces, affecting the anti-bioadhesion performance; phosphocholine can form an organic-inorganic anti-bioadhesion effect with zinc-based metal-organic frameworks, but phosphocholine is susceptible to the influence of light, heat, and humidity, reducing the anti-bioadhesion performance. Summary of the Invention

[0004] The present invention provides an anti-bioadhesive polymer material for filter bags and a preparation method thereof, solving the problems of poor anti-bioadhesion performance and low mechanical properties of polymer materials.

[0005] The technical solution of the present invention:

[0006] An anti-bioadhesive polymer material for filter bags, comprising the following raw materials in parts by mass: 50 - 60 parts of a hydrophobic monomer, 55 - 65 parts of a hydrophilic monomer, 80 - 100 parts of a polymer, 5 - 10 parts of a reinforcing filler, 120 - 130 parts of a solvent, and 1 - 2 parts of an initiator;

[0007] The reinforcing filler is obtained by reacting a metal-organic framework loaded with phosphocholine with oxidized bacterial cellulose, and then mixing and reacting with ferric chloride and tea polyphenols, and depositing on the surface of pretreated carbon fibers.

[0008] The metal-organic framework loaded with phosphocholine is obtained by mixing and reacting zinc nitrate hexahydrate, 2-aminobenzothiazole, and 2-methylimidazole, and then mixing with a phosphocholine solution.

[0009] A preparation method of an anti-bioadhesive polymer material for filter bags, comprising the following preparation steps:

[0010] S1. Mix a hydrophobic monomer, a hydrophilic monomer, a solvent, and a reinforcing filler, stir at 600 - 700 r / min for 5 - 10 min, add an initiator, and stir and react at 60 - 80 °C for 4 - 6 h. After rotary evaporation and concentration, precipitate, filter, and dry to obtain a composite acrylate-based amphoteric copolymer;

[0011] S2. Mix the composite acrylate-based amphoteric copolymer and a polymer, stir at 600 - 700 r / min for 0.5 - 1 h, and perform melt extrusion granulation to obtain the anti-bioadhesive polymer material.

[0012] Further, the hydrophobic monomer is selected from any one of methyl methacrylate, butyl methacrylate, methyl acrylate, ethyl acrylate, and butyl acrylate.

[0013] Further, the hydrophilic monomer is selected from any one of 2-hydroxyethyl methacrylate, 2-acrylamido-2-methylpropanesulfonic acid, N-vinylpyrrolidone, glycidyl methacrylate, polyethylene glycol dimethacrylate, and methacrylic acid.

[0014] Further, the solvent is selected from deionized water or ethanol.

[0015] Further, the polymer is selected from any one of polyvinyl chloride, polylactic acid, polyether polyurethane, polyvinyl alcohol, polyethylene, and polypropylene.

[0016] Further, the initiator is selected from any one of azobisisobutyronitrile, azobisisoheptonitrile, and potassium persulfate.

[0017] Further, the melt extrusion is carried out using a melt extruder with a rotation speed of 150 - 200 rpm and an extrusion temperature of 165 - 185 °C.

[0018] Further, the reinforcing filler is specifically prepared by the following steps:

[0019] A1. Add zinc nitrate hexahydrate, 2-aminobenzothiazole, and 2-methylimidazole to methanol, stir evenly, add sodium formate, introduce nitrogen, and react at 60 - 70 °C for 3 - 5 h. After centrifugation, washing, and drying, obtain a zinc-based metal-organic framework;

[0020] A2. Add the zinc-based metal-organic framework to a phosphocholine solution, stir evenly, after negative pressure, filter, wash, and dry to obtain a metal-organic framework loaded with phosphocholine;

[0021] A3. Add oxidized bacterial cellulose into dimethyl sulfoxide. After rotary evaporation, add triethylamine and metal-organic framework loaded with phosphocholine, stir evenly, stir and react at 0-2 °C for 20-24 h, add ammonia water to adjust the pH to 9-11, continue to stir for 1-2 h, and after centrifugation and freeze-drying, obtain modified oxidized bacterial cellulose;

[0022] A4. Add the modified oxidized bacterial cellulose into deionized water, stir evenly, add tea polyphenols and ferric chloride, stir at 300-400 r / min for 1-2 h until it becomes gel-like, wash the gel, and freeze-dry to obtain a composite aerogel;

[0023] A5. Add the pretreated carbon fiber into ethanol, stir evenly, add the composite aerogel, stir at 100-200 r / min for 20-30 min, after standing, filter, wash, and dry to obtain the reinforcing filler.

[0024] Further, in the above A1 reaction process, after zinc nitrate hexahydrate, 2-aminobenzothiazole and 2-methylimidazole are mixed and reacted, 2-methylimidazole and 2-aminobenzothiazole serve as organic ligands, and zinc ions react with the organic ligands to form a zinc-based metal-organic framework with a three-dimensional network structure.

[0025] Further, in the above A2 reaction process, the porous structure of the zinc-based metal-organic framework has excellent adsorption performance and can adsorb the phosphocholine solution onto the zinc-based metal-organic framework to obtain a metal-organic framework loaded with phosphocholine.

[0026] Further, in the above A3 reaction process, the P-H bond contained in the metal-organic framework loaded with phosphocholine can react with the aldehyde group of oxidized bacterial cellulose, so that the metal-organic framework loaded with phosphocholine is grafted onto the molecular chain of oxidized bacterial cellulose to obtain modified oxidized bacterial cellulose.

[0027] Further, in the above A4 reaction process, ferric chloride serves as a crosslinking agent, can combine with the oxygen-containing functional groups contained in the modified oxidized bacterial cellulose through strong hydrogen bonds, and can also form a hydrogen bond network with the phenolic hydroxyl groups of tea polyphenols, thereby forming a composite aerogel structure with a three-dimensional network structure.

[0028] Further, in the above A5 reaction process, the surface of the pretreated carbon fiber contains a large number of phenolic hydroxyl groups and has excellent adhesion performance, and can adhere the composite aerogel to the surface of the pretreated carbon fiber as a reinforcing filler.

[0029] Further, in step A1, the dosage ratio of zinc nitrate hexahydrate, 2-aminobenzothiazole, 2-methylimidazole, methanol and sodium formate is (1.6-2) g:(1-2) g:(2-3) g:(75-85) mL:(1.1-1.3) g.

[0030] Further, in step A2, the dosage ratio of the zinc-based metal-organic framework to the phosphocholine solution is (2 - 3) g : (18 - 22) mL.

[0031] Further, in step A3, the dosage ratio of the oxidized bacterial cellulose, dimethyl sulfoxide, triethylamine, and the metal-organic framework loaded with phosphocholine is (0.4 - 0.6) g : (45 - 55) mL : (1.6 - 1.8) mL : (1.2 - 1.4) g.

[0032] Further, in step A4, the dosage ratio of the modified oxidized bacterial cellulose, deionized water, tea polyphenols, and ferric chloride is (3 - 5) g : (45 - 55) mL : (2 - 2.4) g : (0.1 - 0.3) g.

[0033] Further, in step A5, the dosage ratio of the pretreated carbon fiber, ethanol, and the composite aerogel is (2 - 3) g : (75 - 85) mL : (1.1 - 1.3) g.

[0034] Further, the oxidized bacterial cellulose is specifically prepared by the following steps:

[0035] Add the bacterial cellulose into deionized water, stir evenly, add sodium periodate, stir and react, then centrifuge to collect the product, wash the product, and freeze-dry to obtain the oxidized bacterial cellulose.

[0036] Further, during the above reaction process, the sodium periodate solution is used as an oxidant to realize the aldehyde group modification of the bacterial cellulose, so that the molecular chain of the bacterial cellulose carries aldehyde functional groups.

[0037] Further, the dosage ratio of the bacterial cellulose, deionized water, and sodium periodate is (1 - 2) g : (90 - 110) mL : (0.3 - 0.5) g.

[0038] Further, the pretreated carbon fiber is specifically prepared by the following steps:

[0039] Add the carbon fiber into the Tris-HCl buffer solution, stir evenly, add dopamine, continue to stir, filter, wash, and dry to obtain the pretreated carbon fiber.

[0040] Further, during the above reaction process, in the Tris-HCl buffer solution, dopamine can self-polymerize on the surface of the carbon fiber to form polydopamine, forming polydopamine-modified graphene oxide, that is, the pretreated carbon fiber.

[0041] Further, the dosage ratio of the carbon fiber, Tris-HCl buffer solution, and dopamine is (1.4 - 1.6) g : (90 - 110) mL : (0.6 - 0.8) g.

[0042] Furthermore, the carbon fiber has a length of 2 - 5 μm and a diameter of 0.3 - 0.5 μm.

[0043] Furthermore, the phosphorylcholine solution is specifically prepared by the following steps:

[0044] Choline chloride is added to dimethyl sulfoxide, and after rotary evaporation, diphenyl phosphite and pyridine are added. The mixture is stirred at room temperature for 3 - 5 h and then rotary evaporated to obtain the phosphorylcholine solution.

[0045] Furthermore, the dosage ratio of choline chloride, dimethyl sulfoxide, diphenyl phosphite and pyridine is (3 - 3.4) g : (75 - 85) mL : (2 - 3) mL : (4 - 6) mL.

[0046] The present invention has the following beneficial effects:

[0047] (1) In the technical solution of the present invention, zinc nitrate hexahydrate, 2 - aminobenzothiazole and 2 - methylimidazole are mixed and reacted to form a zinc - based metal - organic framework with a three - dimensional network structure. The zinc - based metal - organic framework slowly releases zinc ions in a humid or biological environment, increasing the membrane permeability, resulting in the leakage of contents, and then destroying the cell membrane integrity. Moreover, it can interfere with the activity of metabolic enzymes and induce oxidative stress, achieving the effect of preventing microbial adhesion. The phosphorylcholine solution is adsorbed onto the zinc - based metal - organic framework. On the one hand, phosphorylcholine consists of a hydrophilic head and a hydrophobic tail. The hydrophilic head contains a negatively charged phosphate group and a positively charged choline group, which can preferentially adsorb water through electrostatic interaction and form a hydration layer on the surface of the polymer material, forming a steric effect on microorganisms, thereby inhibiting microbial adhesion. On the other hand, adsorbing phosphorylcholine onto the zinc - based metal - organic framework improves the stability of phosphorylcholine, avoiding the influence of light, heat and humidity on phosphorylcholine, reducing the anti - bioadhesion performance. And the phosphate group contained in phosphorylcholine can adsorb and fix the zinc ions migrating from the zinc - based metal - organic framework, forming a zinc - based coating on the surface of the material matrix, having a persistent anti - bioadhesion performance.

[0048] (2) In the technical solution of the present invention, the metal-organic framework loaded with choline phosphate reacts with oxidized bacterial cellulose to graft the metal-organic framework loaded with choline phosphate onto the molecular chain of oxidized bacterial cellulose, which is beneficial to embedding the metal-organic framework loaded with choline phosphate into the bacterial cellulose aerogel network; the modified oxidized bacterial cellulose, ferric chloride and tea polyphenols are mixed and reacted to form an aerogel structure with a three-dimensional network structure. On the one hand, the aerogel with a three-dimensional network structure can absorb and weaken external stress, avoiding the collapse of pores caused by the metal-organic framework under external force and affecting the anti-bioadhesion performance. On the other hand, the aerogel formed by tea polyphenols, modified oxidized bacterial cellulose and ferric chloride has a high crosslinking density, which can increase the mechanical properties of the polymer material, and the aerogel has high heat stability and can be incorporated into the polymer material matrix through a melt extrusion process to enhance the anti-bioadhesion and mechanical properties of the polymer material.

[0049] (3) In the technical solution of the present invention, the composite aerogel is deposited on the surface of the pretreated carbon fiber to form a reinforcing filler, and a rough structure is introduced on the surface of the carbon fiber. The air is intercepted by the grooves in the rough structure to form air cavities, so as to reduce the contact area between biological pollutants and the material surface and further improve the anti-bioadhesion performance of the material; the hydrophobic monomer and the hydrophilic monomer form an acrylate-based amphoteric copolymer, which generates a dense hydration barrier on the material surface through hydrogen bonding and electrostatic interaction, ensuring an efficient anti-bioadhesion function, and containing hydrophilic groups that can bind to the reinforcing filler, so that the reinforcing filler is distributed on the surface of the material matrix. The acrylate-based amphoteric copolymer is compounded to generate a dense hydration barrier on the surface of the material matrix, weakening the interaction between biological pollutants and the material surface. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0051] The raw materials used in the embodiments of the present invention are as follows, and all the reagents used are of analytical grade.

[0052] Among them, the hydrophobic monomer is methyl methacrylate, the hydrophilic monomer is 2-hydroxyethyl methacrylate, and the initiator is azobisisobutyronitrile.

[0053] The solvent is deionized water, and the polymer is polyvinyl chloride.

[0054] Bacterial cellulose is purchased from Hainan Yide Food Co., Ltd.

[0055] The length of the carbon fiber is 3 μm and the diameter is 0.4 μm.

[0056] The oxidized bacterial cellulose is specifically prepared by the following steps:

[0057] Add 1.5 g of bacterial cellulose to 100 mL of deionized water, stir evenly, add 0.4 g of sodium periodate, stir evenly, stir and react at pH 7 and 25 °C for 12 h, centrifuge and collect the product at 5000 r / min, wash the product 3 times with deionized water, and freeze-dry at -20 °C for 12 h to obtain oxidized bacterial cellulose.

[0058] The pretreated carbon fiber is specifically prepared by the following steps:

[0059] Add 1.4 g of carbon fiber to 90 mL of Tris-HCl buffer solution with pH 8.5, stir at 25 °C and 2000 r / min for 20 min, add 0.6 g of dopamine, stir at 30 °C and 2000 r / min for 2 h, filter, wash 3 times with deionized water, and dry in an oven at 70 °C for 10 min to obtain pretreated carbon fiber.

[0060] Example 1

[0061] An anti-bioadhesive polymer material for filter bags, comprising the following raw materials in parts by mass: 50 parts of methyl methacrylate, 55 parts of 2-hydroxyethyl methacrylate, 80 parts of polyvinyl chloride, 5 parts of reinforcing filler, 120 parts of deionized water, and 1 part of azobisisobutyronitrile;

[0062] A preparation method of an anti-bioadhesive polymer material for filter bags, comprising the following preparation steps:

[0063] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water and reinforcing filler, stir at 600 r / min for 5 min, add azobisisobutyronitrile, stir and react at 60 °C for 4 h, concentrate by rotary evaporation, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0064] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 600 r / min for 0.5 h, and melt-extrude and pelletize to obtain an anti-bioadhesive polymer material;

[0065] Among them, the melt extrusion is carried out by a melt extruder with a rotation speed of 150 rpm and an extrusion temperature of 165 °C.

[0066] The reinforcing filler is specifically prepared by the following steps:

[0067] A1. 1.6 g of zinc nitrate hexahydrate, 1 g of 2-aminobenzothiazole, and 2 g of 2-methylimidazole were added to 75 mL of methanol, stirred evenly, 1.3 g of sodium formate was added, nitrogen was introduced, and the reaction was carried out at 60 °C for 3 h. Centrifugation was carried out at a speed of 8000 r / min, washed 3 times with methanol and 3 times with deionized water, and dried in an oven at 60 °C for 10 min to obtain a zinc-based metal-organic framework;

[0068] A2. 2 g of the zinc-based metal-organic framework was added to 18 mL of a phosphocholine solution, stirred evenly, subjected to negative pressure at -0.05 MPa, filtered, washed 3 times with deionized water, and freeze-dried at -20 °C for 10 h to obtain a metal-organic framework loaded with phosphocholine;

[0069] A3. 0.4 g of oxidized bacterial cellulose was added to 45 mL of dimethyl sulfoxide, rotary evaporated to 25 mL of suspension at 50 °C, 1.6 mL of triethylamine was added, 1.2 g of the metal-organic framework loaded with phosphocholine was added, stirred evenly, stirred and reacted at 0 °C for 20 h, ammonia water was added to adjust the pH to 9, and stirring was continued for 1 h. Centrifugation was carried out at 6000 r / min for 5 min, and freeze-dried at -20 °C for 20 h to obtain modified oxidized bacterial cellulose;

[0070] A4. 3 g of the modified oxidized bacterial cellulose was added to 45 mL of deionized water, stirred evenly, 2 g of tea polyphenols and 0.1 g of ferric chloride were added, stirred at 300 r / min for 1 h until it became gel-like, the gel was washed 3 times with deionized water, and freeze-dried at -20 °C for 24 h to obtain a composite aerogel;

[0071] A5. 2 g of pretreated carbon fiber was added to 75 mL of ethanol, stirred evenly, 1.1 g of the composite aerogel was added, stirred at 100 r / min for 20 min, allowed to stand for 1 h, filtered, washed 3 times with deionized water, and dried in an oven at 70 °C for 10 min to obtain a reinforcing filler.

[0072] Example 2

[0073] An anti-biofouling polymer material for filter bags, comprising the following raw materials in parts by mass: 55 parts of methyl methacrylate, 60 parts of 2-hydroxyethyl methacrylate, 90 parts of polyvinyl chloride, 8 parts of reinforcing filler, 125 parts of deionized water, and 1.5 parts of azobisisobutyronitrile;

[0074] A preparation method of an anti-biofouling polymer material for filter bags, comprising the following preparation steps:

[0075] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water and reinforcing filler, stir at 650 r / min for 8 min, add azobisisobutyronitrile, stir and react at 70 °C for 5 h, concentrate by rotary evaporation, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0076] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 650 r / min for 0.8 h, and perform melt extrusion granulation to obtain an anti-bioadhesive polymer material;

[0077] Among them, melt extrusion is carried out using a melt extruder, the rotation speed is 180 rpm, and the extrusion temperature is 175 °C.

[0078] The reinforcing filler is specifically prepared by the following steps:

[0079] A1. Add 1.8 g of zinc nitrate hexahydrate, 1.5 g of 2-aminobenzothiazole and 2.5 g of 2-methylimidazole to 80 mL of methanol, stir evenly, add 1.2 g of sodium formate, introduce nitrogen, react at 65 °C for 4 h, centrifuge at a speed of 8000 r / min, wash 3 times with methanol and 3 times with deionized water, and dry in an oven at 60 °C for 10 min to obtain a zinc-based metal-organic framework;

[0080] A2. Add 2.5 g of the zinc-based metal-organic framework to 20 mL of a phosphocholine solution, stir evenly, perform negative pressure at -0.05 MPa, filter, wash 3 times with deionized water, and freeze-dry at -20 °C for 10 h to obtain a metal-organic framework loaded with phosphocholine;

[0081] A3. Add 0.5 g of oxidized bacterial cellulose to 50 mL of dimethyl sulfoxide, rotary evaporate at 50 °C to 25 mL of suspension, add 1.7 mL of triethylamine, add 1.3 g of the metal-organic framework loaded with phosphocholine, stir evenly, stir and react at 1 °C for 22 h, add ammonia water to adjust the pH to 10, continue to stir for 1.5 h, centrifuge at 6000 r / min for 5 min, and freeze-dry at -20 °C for 20 h to obtain modified oxidized bacterial cellulose;

[0082] A4. Add 4 g of modified oxidized bacterial cellulose to 50 mL of deionized water, stir evenly, add 2.2 g of tea polyphenols and 0.2 g of ferric chloride, stir at 350 r / min for 1.5 h until it becomes gel-like, wash the gel 3 times with deionized water, and freeze-dry at -20 °C for 24 h to obtain a composite aerogel;

[0083] A5. Add 2.5 g of pretreated carbon fiber to 80 mL of ethanol, stir evenly, add 1.2 g of composite aerogel, stir at 150 r / min for 25 min, let stand for 1 h, then filter, wash 3 times with deionized water, and dry in an oven at 70 °C for 10 min to obtain the reinforcing filler.

[0084] Example 3

[0085] A bioadhesion-resistant polymer material for filter bags, comprising the following raw materials in parts by mass: 60 parts of methyl methacrylate, 65 parts of 2-hydroxyethyl methacrylate, 100 parts of polyvinyl chloride, 10 parts of reinforcing filler, 130 parts of deionized water, and 2 parts of azobisisobutyronitrile;

[0086] A preparation method of a bioadhesion-resistant polymer material for filter bags, comprising the following preparation steps:

[0087] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water and the reinforcing filler, stir at 700 r / min for 10 min, add azobisisobutyronitrile, stir and react at 80 °C for 6 h, after rotary evaporation and concentration, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0088] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 700 r / min for 1 h, and perform melt extrusion granulation to obtain the bioadhesion-resistant polymer material;

[0089] Among them, melt extrusion is carried out using a melt extruder, the rotation speed is 200 rpm, and the extrusion temperature is 185 °C.

[0090] The reinforcing filler is specifically prepared by the following steps:

[0091] A1. Add 2 g of zinc nitrate hexahydrate, 2 g of 2-aminobenzothiazole and 3 g of 2-methylimidazole to 85 mL of methanol, stir evenly, add 1.3 g of sodium formate, introduce nitrogen, react at 70 °C for 5 h, centrifuge at a speed of 8000 r / min, wash 3 times with methanol and 3 times with deionized water, and dry in an oven at 60 °C for 10 min to obtain a zinc-based metal-organic framework;

[0092] A2. Add 3 g of the zinc-based metal-organic framework to 22 mL of a phosphocholine solution, stir evenly, perform negative pressure at -0.05 MPa, then filter, wash 3 times with deionized water, and freeze-dry at -20 °C for 10 h to obtain a metal-organic framework loaded with phosphocholine;

[0093] A3. Add 0.6 g of oxidized bacterial cellulose to 55 mL of dimethyl sulfoxide, rotary evaporate to 25 mL of suspension at 50 °C, add 1.8 mL of triethylamine, add 1.4 g of metal-organic framework loaded with choline phosphate, stir evenly, stir and react at 2 °C for 24 h, add ammonia water to adjust the pH to 11, continue to stir for 2 h, centrifuge at 6000 r / min for 5 min, and freeze-dry at -20 °C for 20 h to obtain modified oxidized bacterial cellulose;

[0094] A4. Add 5 g of modified oxidized bacterial cellulose to 55 mL of deionized water, stir evenly, add 2.4 g of tea polyphenols and 0.3 g of ferric chloride, stir at 400 r / min for 2 h until it becomes gel-like, wash the gel 3 times with deionized water, and freeze-dry at -20 °C for 24 h to obtain a composite aerogel;

[0095] A5. Add 3 g of pretreated carbon fiber to 85 mL of ethanol, stir evenly, add 1.3 g of composite aerogel, stir at 200 r / min for 30 min, let it stand for 1 h, then filter, wash 3 times with deionized water, and dry in an oven at 70 °C for 10 min to obtain reinforcing filler.

[0096] Comparative Example 1

[0097] An anti-bioadhesive polymer material for filter bags, comprising the following raw materials in parts by mass: 60 parts of methyl methacrylate, 65 parts of 2-hydroxyethyl methacrylate, 100 parts of polyvinyl chloride, 10 parts of reinforcing filler, 130 parts of deionized water, and 2 parts of azobisisobutyronitrile;

[0098] A preparation method of an anti-bioadhesive polymer material for filter bags, comprising the following preparation steps:

[0099] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water and reinforcing filler, stir at 700 r / min for 10 min, add azobisisobutyronitrile, stir and react at 80 °C for 6 h, after rotary evaporation and concentration, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0100] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 700 r / min for 1 h, and perform melt extrusion granulation to obtain an anti-bioadhesive polymer material;

[0101] Among them, melt extrusion is carried out using a melt extruder, the rotation speed is 200 rpm, and the extrusion temperature is 185 °C.

[0102] The reinforcing filler is specifically prepared by the following steps:

[0103] A1. Add 2 g of zinc nitrate hexahydrate, 2 g of 2-aminobenzothiazole, and 3 g of 2-methylimidazole to 85 mL of methanol, stir evenly, add 1.3 g of sodium formate, introduce nitrogen, react at 70 °C for 5 h, centrifuge at a speed of 8000 r / min, wash 3 times with methanol and 3 times with deionized water, and dry in an oven at 60 °C for 10 min to obtain a zinc-based metal-organic framework;

[0104] A2. Add 0.6 g of oxidized bacterial cellulose to 55 mL of dimethyl sulfoxide, rotary evaporate to 25 mL of suspension at 50 °C, add 1.8 mL of triethylamine, add 1.4 g of a metal-organic framework loaded with phosphorylcholine, stir evenly, stir and react at 2 °C for 24 h, add ammonia water to adjust the pH to 11, continue to stir for 2 h, centrifuge at 6000 r / min for 5 min, and freeze-dry at -20 °C for 20 h to obtain modified oxidized bacterial cellulose;

[0105] A3. Add 5 g of modified oxidized bacterial cellulose to 55 mL of deionized water, stir evenly, add 2.4 g of tea polyphenols and 0.3 g of ferric chloride, stir at 400 r / min for 2 h until it becomes gel-like, wash the gel 3 times with deionized water, and freeze-dry at -20 °C for 24 h to obtain a composite aerogel;

[0106] A4. Add 3 g of pretreated carbon fiber to 85 mL of ethanol, stir evenly, add 1.3 g of the composite aerogel, stir at 200 r / min for 30 min, let it stand for 1 h, then filter, wash 3 times with deionized water, and dry in an oven at 70 °C for 10 min to obtain a reinforcing filler.

[0107] Comparative Example 2

[0108] An anti-bioadhesive polymer material for filter bags, comprising the following raw materials in parts by mass: 60 parts of methyl methacrylate, 65 parts of 2-hydroxyethyl methacrylate, 100 parts of polyvinyl chloride, 10 parts of reinforcing filler, 130 parts of deionized water, and 2 parts of azobisisobutyronitrile;

[0109] A preparation method of an anti-bioadhesive polymer material for filter bags, comprising the following preparation steps:

[0110] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water, and the reinforcing filler, stir at 700 r / min for 10 min, add azobisisobutyronitrile, stir and react at 80 °C for 6 h, after rotary evaporation and concentration, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0111] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 700 r / min for 1 h, and perform melt extrusion granulation to obtain the anti-bioadhesive polymer material;

[0112] Among them, melt extrusion is carried out using a melt extruder, the rotation speed is 200 rpm, and the extrusion temperature is 185 °C.

[0113] The reinforcing filler is specifically prepared by the following steps:

[0114] A1. Add 2 g of zinc nitrate hexahydrate, 2 g of 2-aminobenzothiazole, and 3 g of 2-methylimidazole to 85 mL of methanol, stir evenly, add 1.3 g of sodium formate, introduce nitrogen, react at 70 °C for 5 h, centrifuge at a speed of 8000 r / min, wash 3 times with methanol, wash 3 times with deionized water, and dry in an oven at 60 °C for 10 min to obtain zinc-based metal-organic framework;

[0115] A2. Add 3 g of zinc-based metal-organic framework to 22 mL of phosphocholine solution, stir evenly, perform negative pressure at -0.05 MPa, filter, wash 3 times with deionized water, and freeze-dry at -20 °C for 10 h to obtain the metal-organic framework loaded with phosphocholine;

[0116] A3. Add 0.6 g of bacterial cellulose to 55 mL of dimethyl sulfoxide, rotary evaporate to 25 mL of suspension at 50 °C, add 1.8 mL of triethylamine, add 1.4 g of the metal-organic framework loaded with phosphocholine, stir evenly, stir and react at 2 °C for 24 h, add ammonia water to adjust the pH to 11, continue to stir for 2 h, centrifuge at 6000 r / min for 5 min, and freeze-dry at -20 °C for 20 h to obtain modified bacterial cellulose;

[0117] A4. Add 5 g of modified oxidized bacterial cellulose to 55 mL of deionized water, stir evenly, add 2.4 g of tea polyphenols and 0.3 g of ferric chloride, stir at 400 r / min for 2 h until it becomes gel-like, wash the gel 3 times with deionized water, and freeze-dry at -20 °C for 24 h to obtain the composite aerogel;

[0118] A5. Add 3 g of pretreated carbon fiber to 85 mL of ethanol, stir evenly, add 1.3 g of the composite aerogel, stir at 200 r / min for 30 min, let stand for 1 h, filter, wash 3 times with deionized water, and dry in an oven at 70 °C for 10 min to obtain the reinforcing filler.

[0119] Comparative Example 3

[0120] An anti-bioadhesive polymer material for filter bags, comprising the following raw materials in parts by mass: 60 parts of methyl methacrylate, 65 parts of 2-hydroxyethyl methacrylate, 100 parts of polyvinyl chloride, 10 parts of reinforcing filler, 130 parts of deionized water, and 2 parts of azobisisobutyronitrile;

[0121] A preparation method of an anti-bioadhesive polymer material for filter bags, comprising the following preparation steps:

[0122] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water, and reinforcing filler, stir at 700 r / min for 10 min, add azobisisobutyronitrile, stir and react at 80 °C for 6 h, concentrate by rotary evaporation, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0123] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 700 r / min for 1 h, and granulate by melt extrusion to obtain an anti-bioadhesive polymer material;

[0124] Among them, melt extrusion is carried out using a melt extruder with a rotation speed of 200 rpm and an extrusion temperature of 185 °C.

[0125] The reinforcing filler is specifically prepared by the following steps:

[0126] A1. Add 2 g of zinc nitrate hexahydrate, 2 g of 2-aminobenzothiazole, and 3 g of 2-methylimidazole to 85 mL of methanol, stir evenly, add 1.3 g of sodium formate, introduce nitrogen, react at 70 °C for 5 h, centrifuge at a speed of 8000 r / min, wash 3 times with methanol and 3 times with deionized water, and dry in an oven at 60 °C for 10 min to obtain a zinc-based metal-organic framework;

[0127] A2. Add 3 g of the zinc-based metal-organic framework to 22 mL of a phosphocholine solution, stir evenly, carry out negative pressure at -0.05 MPa, filter, wash 3 times with deionized water, and freeze-dry at -20 °C for 10 h to obtain a metal-organic framework loaded with phosphocholine;

[0128] A3. Add 5 g of the metal-organic framework loaded with phosphocholine to 55 mL of deionized water, stir evenly, add 2.4 g of tea polyphenols and 0.3 g of ferric chloride, stir at 400 r / min for 2 h, wash 3 times with deionized water, and freeze-dry at -20 °C for 24 h to obtain a composite material;

[0129] A4. Add 3 g of pretreated carbon fiber into 85 mL of ethanol, stir evenly, add 1.3 g of composite material, stir at 200 r / min for 30 min, let stand for 1 h, then filter, wash with deionized water three times, and dry in an oven at 70 °C for 10 min to obtain the reinforcing filler.

[0130] Comparative Example 4

[0131] A biofouling-resistant polymer material for filter bags, comprising the following raw materials in parts by mass: 60 parts of methyl methacrylate, 65 parts of 2-hydroxyethyl methacrylate, 100 parts of polyvinyl chloride, 10 parts of reinforcing filler, 130 parts of deionized water, and 2 parts of azobisisobutyronitrile;

[0132] A preparation method of a biofouling-resistant polymer material for filter bags, comprising the following preparation steps:

[0133] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water and reinforcing filler, stir at 700 r / min for 10 min, add azobisisobutyronitrile, stir and react at 80 °C for 6 h, concentrate by rotary evaporation, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0134] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 700 r / min for 1 h, and granulate by melt extrusion to obtain the biofouling-resistant polymer material;

[0135] Among them, melt extrusion is carried out using a melt extruder, the rotation speed is 200 rpm, and the extrusion temperature is 185 °C.

[0136] The reinforcing filler is specifically prepared by the following steps:

[0137] A1. Add 2 g of zinc nitrate hexahydrate, 2 g of 2-aminobenzothiazole and 3 g of 2-methylimidazole into 85 mL of methanol, stir evenly, add 1.3 g of sodium formate, introduce nitrogen, react at 70 °C for 5 h, centrifuge at a speed of 8000 r / min, wash with methanol three times and deionized water three times, and dry in an oven at 60 °C for 10 min to obtain a zinc-based metal-organic framework;

[0138] A2. Add 3 g of zinc-based metal-organic framework into 22 mL of phosphocholine solution, stir evenly, carry out negative pressure at -0.05 MPa, then filter, wash with deionized water three times, and freeze-dry at -20 °C for 10 h to obtain a metal-organic framework loaded with phosphocholine;

[0139] A3. Add 0.6 g of oxidized bacterial cellulose to 55 mL of dimethyl sulfoxide, rotary evaporate to 25 mL of suspension at 50 °C, add 1.8 mL of triethylamine, add 1.4 g of metal-organic framework loaded with choline phosphate, stir evenly, stir and react at 2 °C for 24 h, add ammonia water to adjust the pH to 11, continue to stir for 2 h, centrifuge at 6000 r / min for 5 min, and freeze-dry at -20 °C for 20 h to obtain modified oxidized bacterial cellulose;

[0140] A4. Add 5 g of modified oxidized bacterial cellulose to 55 mL of deionized water, add 0.3 g of ferric chloride, stir until it becomes gel-like, wash the gel 3 times with deionized water, and freeze-dry at -20 °C for 24 h to obtain a composite aerogel;

[0141] A5. Add 3 g of pretreated carbon fiber to 85 mL of ethanol, stir evenly, add 1.3 g of composite aerogel, stir at 200 r / min for 30 min, let it stand for 1 h, then filter, wash 3 times with deionized water, and dry in an oven at 70 °C for 10 min to obtain an enhanced filler.

[0142] Comparative Example 5

[0143] An anti-bioadhesive polymer material for filter bags, comprising the following raw materials in parts by mass: 60 parts of methyl methacrylate, 65 parts of 2-hydroxyethyl methacrylate, 100 parts of polyvinyl chloride, 10 parts of enhanced filler, 130 parts of deionized water, and 2 parts of azobisisobutyronitrile;

[0144] A preparation method of an anti-bioadhesive polymer material for filter bags, comprising the following preparation steps:

[0145] S1. Mix methyl methacrylate, 2-hydroxyethyl methacrylate, deionized water and enhanced filler, stir at 700 r / min for 10 min, add azobisisobutyronitrile, stir and react at 80 °C for 6 h, after rotary evaporation and concentration, precipitate with deionized water, filter, and dry in an oven at 45 °C for 4 h to obtain a composite acrylate-based amphoteric copolymer;

[0146] S2. Mix the composite acrylate-based amphoteric copolymer and polyvinyl chloride, stir at 700 r / min for 1 h, and melt-extrude and pelletize to obtain an anti-bioadhesive polymer material;

[0147] Among them, the melt extrusion is carried out using a melt extruder, the rotation speed is 200 rpm, and the extrusion temperature is 185 °C.

[0148] The enhanced filler is specifically prepared by the following steps:

[0149] A1. Add 2 g of zinc nitrate hexahydrate, 2 g of 2-aminobenzothiazole, and 3 g of 2-methylimidazole to 85 mL of methanol, stir evenly, add 1.3 g of sodium formate, introduce nitrogen, react at 70 °C for 5 h, centrifuge at a speed of 8000 r / min, wash 3 times with methanol and 3 times with deionized water, and dry in an oven at 60 °C for 10 min to obtain a zinc-based metal-organic framework;

[0150] A2. Add 3 g of the zinc-based metal-organic framework to 22 mL of a choline phosphate solution, stir evenly, apply negative pressure at -0.05 MPa, then filter, wash 3 times with deionized water, and freeze-dry at -20 °C for 10 h to obtain a metal-organic framework loaded with choline phosphate;

[0151] A3. Add 0.6 g of oxidized bacterial cellulose to 55 mL of dimethyl sulfoxide, rotary evaporate to 25 mL of suspension at 50 °C, add 1.8 mL of triethylamine, add 1.4 g of the metal-organic framework loaded with choline phosphate, stir evenly, stir and react at 2 °C for 24 h, add ammonia water to adjust the pH to 11, continue to stir for 2 h, centrifuge at 6000 r / min for 5 min, and freeze-dry at -20 °C for 20 h to obtain modified oxidized bacterial cellulose;

[0152] A4. Add 5 g of the modified oxidized bacterial cellulose to 55 mL of deionized water, stir evenly, add 2.4 g of tea polyphenols and 0.3 g of ferric chloride, stir at 400 r / min for 2 h until it becomes gel-like, wash the gel 3 times with deionized water, and freeze-dry at -20 °C for 24 h to obtain a composite aerogel;

[0153] A5. Add 3 g of carbon fiber to 85 mL of ethanol, stir evenly, add 1.3 g of the composite aerogel, stir at 200 r / min for 30 min, let it stand for 1 h, then filter, wash 3 times with deionized water, and dry in an oven at 70 °C for 10 min to obtain a reinforcing filler.

[0154] Now, perform performance tests on the anti-bioadhesive polymer materials prepared in Examples 1-3 and Comparative Examples 1-5.

[0155] Select the anti-bioadhesive polymer materials prepared above, perform performance tests after injection molding into strips. Among them, the injection pressure is 90 MPa and the injection temperature is 280 °C;

[0156] Mechanical property test: Cut the sample into strips of 15 mm × 7 mm, use a UTM-Q422 universal tensile tester to measure the breaking strength and elongation at break of the sample according to ASTM standard D882-02. Before the test, accurately measure the thickness of the sample using a vernier caliper, perform the test at a tensile speed of 2 mm / min, test 3 times for each group of samples, and take the average value.

[0157] Anti - adhesion experiment: After immersing the sample surface in 1 mL of Escherichia coli / Staphylococcus aureus solution for 2.5 h, take it out and wash it slightly. Desorb the bacteria attached to the surface by ultrasonic method. After diluting the desorbed bacterial liquid, plate - count it to obtain the total number of bacteria A. The adhesion rate (%) of bacteria on the sample surface is measured by the colony - counting method. Anti - adhesion rate = (initial number of bacteria - A) / initial number of bacteria × 100%. Measure each group of samples 5 times and record the average value.

[0158] Bactericidal experiment: After immersing the sample in 1 mL of Escherichia coli and Staphylococcus aureus solution for 2.5 h, take it out and wash it slightly. Then irradiate it under visible light with a power of 10 W and a wavelength of 650 nm for 30 min. After ultrasonic desorption, dilute the bacterial liquid and plate - count it to obtain the total number of bacteria B; also, obtain the total number of bacteria adhered B after the same treatment of the original substrate material, i.e., the sample obtained in Comparative Example 1. Bactericidal efficiency = (initial number of bacteria - B) / initial number of bacteria × 100%.

[0159] The test results are shown in Table 1 below.

[0160] Table 1 Performance detection of anti - bioadhesive polymer materials prepared in Examples 1 - 3 and Comparative Examples 1 - 6

[0161]

[0162] It can be seen from the data in Table 1 that the anti - bioadhesive polymer materials prepared in Examples 1 - 3 have excellent anti - bioadhesion performance and mechanical properties.

[0163] In Comparative Example 1, when the metal - organic framework loaded with phosphocholine was replaced with a zinc - based metal - organic framework as the reinforcing filler and added to the anti - bioadhesive polymer material, its anti - bioadhesion performance and mechanical properties decreased. This proves that phosphocholine can preferentially adsorb water through electrostatic interaction, form a hydration layer on the surface of the polymer material, and form a steric effect on microorganisms, thereby inhibiting the adhesion of microorganisms. In addition, the phosphate group contained in phosphocholine can adsorb and fix the zinc ions migrated from the zinc - based metal - organic framework, form a zinc - based coating on the surface of the material matrix, and have a persistent anti - bioadhesion performance. Moreover, phosphocholine can react with oxidized bacterial cellulose and embed the metal - organic framework loaded with phosphocholine into the bacterial cellulose aerogel network to improve the mechanical properties.

[0164] In Comparative Example 2, the reinforcing filler prepared by replacing oxidized bacterial cellulose with bacterial cellulose was added to the anti-bioadhesive polymer material, and its anti-bioadhesive performance and mechanical properties decreased, which proved that oxidized bacterial cellulose could react with the metal-organic framework loaded with phosphocholine, embed the metal-organic framework loaded with phosphocholine into the bacterial cellulose aerogel network, absorb and weaken external stress, avoid the collapse of pores caused by the metal-organic framework under external force, affect the anti-bioadhesive performance, and the zinc-based metal-organic framework could achieve the effect of preventing microbial adhesion.

[0165] In Comparative Example 3, the reinforcing filler prepared by replacing the modified oxidized bacterial cellulose with the metal-organic framework loaded with phosphocholine was added to the anti-bioadhesive polymer material, and its anti-bioadhesive performance and mechanical properties decreased, which proved that the aerogel structure with a three-dimensional network structure based on oxidized bacterial cellulose could absorb and weaken external stress, avoid the collapse of pores caused by the metal-organic framework under external force, affect the anti-bioadhesive performance, and the formed bacterial cellulose aerogel was beneficial to introducing a rough structure on the surface of carbon fiber to improve the anti-bioadhesive performance of the material.

[0166] In Comparative Example 4, the reinforcing filler prepared without adding tea polyphenols was added to the anti-bioadhesive polymer material, and its mechanical properties decreased, which proved that tea polyphenols and ferric chloride could increase the crosslinking density of the aerogel and increase the mechanical properties of the polymer material.

[0167] In Comparative Example 5, the reinforcing filler prepared by replacing the pretreated carbon fiber with carbon fiber was added to the anti-bioadhesive polymer material, and its anti-bioadhesive performance decreased, which proved that depositing the composite aerogel on the surface of the pretreated carbon fiber to form a reinforcing filler, introducing a rough structure on the surface of the carbon fiber, and using the grooves in the rough structure to intercept air, thereby forming air cavities to reduce the contact area between biological pollutants and the material surface, and further improving the anti-bioadhesive performance of the material.

[0168] In the description of the specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0169] The above content is only an example and explanation of the present invention. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the scope defined by the invention, they should all belong to the protection scope of the present invention.

Claims

1. An anti-bioadhesive polymer material for filter bags, characterized in that, It includes the following raw materials in parts by mass: 50 - 60 parts of hydrophobic monomer, 55 - 65 parts of hydrophilic monomer, 80 - 100 parts of high molecular polymer, 5 - 10 parts of reinforcing filler, 120 - 130 parts of solvent, and 1 - 2 parts of initiator; The reinforcing filler is obtained by reacting a metal - organic framework loaded with phosphocholine with oxidized bacterial cellulose, then mixing and reacting with ferric chloride and tea polyphenols, and depositing on the surface of pretreated carbon fiber; The metal - organic framework loaded with phosphocholine is obtained by mixing and reacting zinc nitrate hexahydrate, 2 - aminobenzothiazole, and 2 - methylimidazole, and then mixing with a phosphocholine dichloride solution; 2. The anti-bioadhesive polymer material for a filter bag according to claim 1, characterized in that, The reinforcing filler is specifically prepared by the following steps: A1. Add zinc nitrate hexahydrate, 2 - aminobenzothiazole, and 2 - methylimidazole into methanol, stir evenly, add sodium formate, introduce nitrogen, and react at 60 - 70 °C for 3 - 5 h. After centrifugation, washing, and drying, zinc - based metal - organic framework is obtained; A2. Add the zinc - based metal - organic framework into the phosphocholine dichloride solution, stir evenly, after applying negative pressure, filter, wash, and dry to obtain the metal - organic framework loaded with phosphocholine; A3. Add oxidized bacterial cellulose into dimethyl sulfoxide, after rotary evaporation, add triethylamine and the metal - organic framework loaded with phosphocholine, stir evenly, stir - react at 0 - 2 °C for 20 - 24 h, add ammonia water to adjust the pH to 9 - 11, continue to stir for 1 - 2 h, after centrifugation, freeze - dry to obtain modified oxidized bacterial cellulose; A4. Add the modified oxidized bacterial cellulose into deionized water, stir evenly, add tea polyphenols and ferric chloride, stir at 300 - 400 r / min for 1 - 2 h until it becomes gel - like, wash the gel, and freeze - dry to obtain composite aerogel; A5. Add the pretreated carbon fiber into ethanol, stir evenly, add the composite aerogel, stir at 100 - 200 r / min for 20 - 30 min, after standing, filter, wash, and dry to obtain the reinforcing filler.

3. The anti-bioadhesive polymer material for a filter bag according to claim 2, characterized in that, In step A1, the dosage ratio of zinc nitrate hexahydrate, 2 - aminobenzothiazole, 2 - methylimidazole, methanol, and sodium formate is (1.6 - 2) g:(1 - 2) g:(2 - 3) g:(75 - 85) mL:(1.1 - 1.3) g.

4. The anti-bioadhesive polymer material for a filter bag according to claim 2, characterized in that, In step A2, the dosage ratio of the zinc - based metal - organic framework and the phosphocholine dichloride solution is (2 - 3) g:(18 - 22) mL.

5. The anti-bioadhesive polymer material for a filter bag according to claim 2, characterized in that, In step A3, the dosage ratio of oxidized bacterial cellulose, dimethyl sulfoxide, triethylamine, and the metal - organic framework loaded with phosphocholine is (0.4 - 0.6) g:(45 - 55) mL:(1.5 - 1.7) mL:(1.2 - 1.4) g.

6. The anti-bioadhesive polymer material for a filter bag according to claim 2, wherein, In step A4, the dosage ratio of the modified oxidized bacterial cellulose, deionized water, tea polyphenols, and ferric chloride is (3 - 5) g:(45 - 55) mL:(2 - 2.4) g:(0.1 - 0.3) g.

7. The anti-bioadhesive polymer material for a filter bag according to claim 2, characterized in that, In step A5, the dosage ratio of the pretreated carbon fiber, ethanol, and the composite aerogel is (2 - 3) g:(75 - 85) mL:(1.1 - 1.3) g.

8. The anti-bioadhesive polymer material for a filter bag according to claim 1, wherein, The phosphocholine dichloride solution is specifically prepared by the following steps: Choline chloride was added to dimethyl sulfoxide. After rotary evaporation, diphenyl phosphite and pyridine were added, and the mixture was stirred at room temperature for 3 - 5 h. After rotary evaporation again, a choline diphosphate solution was obtained.

9. The anti-bioadhesive polymer material for a filter bag according to claim 8, characterized in that, The dosage ratio of choline chloride, dimethyl sulfoxide, diphenyl phosphite and pyridine is (3 - 3.4) g : (75 - 85) mL : (2 - 3) mL : (4 - 6) mL.

10. A method for preparing an anti-bioadhesive polymer material for a filter bag according to any one of claims 1-9, characterized in that, It includes the following preparation steps: S1. A hydrophobic monomer, a hydrophilic monomer, a solvent and a reinforcing filler were mixed and stirred at 600 - 700 r / min for 5 - 10 min. An initiator was added, and the mixture was stirred at 60 - 80 °C for 4 - 6 h. After rotary evaporation and concentration, precipitation, filtration and drying were carried out to obtain a composite acrylate-based amphoteric copolymer. S2. The composite acrylate-based amphoteric copolymer and a high molecular polymer were mixed and stirred at 600 - 700 r / min for 0.5 - 1 h. After melt extrusion granulation, an anti-bioadhesive high molecular material was obtained.

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