Antibacterial attapulgite modified nitrile rubber and preparation method thereof

Abstract

The invention relates to the technical field of high polymer materials, and discloses antibacterial attapulgite modified nitrile rubber, because an acrylonitrile monomer is used in the attapulgite modification process, polyacrylonitrile chain segments exist on the surface of attapulgite, and the polyacrylonitrile chain segments also exist in nitrile rubber, the compatibility with the nitrile rubber is enhanced, and the antibacterial attapulgite modified nitrile rubber has the advantages that the antibacterial attapulgite modified nitrile rubber is prepared, and the service life of the antibacterial attapulgite modified nitrile rubber is prolonged. The attapulgite has good dispersibility in the nitrile rubber, and the grafting of organic polymer macromolecules also inhibits the agglomeration of the attapulgite, so that the attapulgite can be used as a reinforcing phase in a nitrile rubber matrix, and the attapulgite and the nitrile rubber matrix have very good interface bonding, thereby enhancing the mechanical properties of the nitrile rubber. The tensile strength and the elongation at break are improved, and the grafted bifunctional antibacterial micromolecules can also be uniformly dispersed in the nitrile rubber matrix, so that the nitrile rubber has more excellent long-acting and lasting antibacterial performance.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, in particular to an antibacterial attapulgite-modified nitrile rubber and a preparation method thereof. Background Art

[0002] With the continuous development of society, people's pursuit of quality of life is constantly improving, and the emergence of antibacterial materials has undoubtedly brought many conveniences to people's lives. Rubber products, as one of the more common products, are also one of the materials that can often come into contact with the skin. Therefore, the emergence of antibacterial rubber is also an inevitable development and is increasingly valued by people. Nitrile rubber, as one of the commonly used rubbers, is naturally necessary to perform antibacterial modification on it. However, there are relatively few studies on antibacterial modification of nitrile rubber. Therefore, research on antibacterial modification of nitrile rubber also has broad application and development prospects.

[0003] In the Chinese patent "CN102504355B A kind of elastic antibacterial and deodorizing shoe material", an antibacterial rubber material with natural rubber and nitrile rubber as the main rubber components and chlorhexidine hydrochloride powder as the main antibacterial active ingredient is disclosed. It can achieve a relatively long-lasting bactericidal and deodorizing effect, but because the added small molecules are prone to separation and shedding due to compatibility problems, the antibacterial duration is not long. By grafting antibacterial groups such as quaternary ammonium salts and halamines onto compatible macromolecules, this situation can be effectively avoided. In addition, since the mechanical properties of ordinary nitrile rubber are also relatively general, fillers are usually used for modification. Attapulgite is an inorganic material with excellent performance, but it is also prone to agglomeration in the matrix. Therefore, improving the compatibility of attapulgite with nitrile rubber is also a good way to improve the performance of nitrile rubber.

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides an antibacterial attapulgite-modified nitrile rubber and a preparation method thereof, which solves the problems that the antibacterial effect of ordinary antibacterial nitrile rubber is not durable and the compatibility of attapulgite and nitrile rubber is poor.

[0005] (II) Technical solution To achieve the above object, the present invention provides the following technical solution: A method for preparing antibacterial attapulgite-modified nitrile rubber comprises the following steps: (1) Add attapulgite to toluene solvent, disperse by ultrasonication, then add γ-methacryloxypropyltrimethoxysilane, heat to 90-110°C, stir and react for 6-12h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add the olefin-modified attapulgite to deionized water, perform ultrasonic dispersion, then add acrylonitrile, dimethylaminoethyl methacrylate and emulsifier sodium dodecyl sulfonate in sequence, raise the temperature to 40-60°C under a nitrogen atmosphere, add ammonium persulfate, then add Na2SO3 solution dropwise, stir for in-situ polymerization for 8-16 hours, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain functionalized modified attapulgite; (3) The molecular formula is C 13 H 23 BrN2O2-bromooctyl dimethyl hydantoin and functionalized modified attapulgite are added to acetonitrile solvent, followed by addition of K2CO3, heating to 60-80°C, reflux reaction for 6-12h, and after the reaction is completed, centrifugation, washing with anhydrous ethanol, and then treated with tert-butyl hypochlorous acid and vacuum dried to obtain halamine-quaternary ammonium salt modified attapulgite; (4) Add nitrile rubber, halamine-quaternary ammonium salt modified attapulgite, zinc oxide, accelerator dibenzothiazole disulfide, sulfur, stearic acid, and antioxidant 4010 into a stirring device in sequence, stir and mix for 2-4 hours, and then use a flat plate vulcanizer to vulcanize in a mold at 45-65°C for 24-36 hours to obtain an antibacterial attapulgite modified nitrile rubber.

[0006] Preferably, in step (1), the mass ratio of toluene, attapulgite and γ-methacryloxypropyltrimethoxysilane is 2800-5600:100:40-120.

[0007] Preferably, in step (2), the mass ratio of deionized water, olefin-modified attapulgite, acrylonitrile, dimethylaminoethyl methacrylate, emulsifier sodium dodecyl sulfate, ammonium persulfate and Na2SO3 is 3000-8000:100:150-250:30-55:4-8:2-5:1-2.5.

[0008] Preferably, in step (3), the mass ratio of acetonitrile, functionalized modified attapulgite, bromooctyl dimethyl hydantoin and K2CO3 is 1500-4800:100:25-60:5-10.

[0009] Preferably, in step (4), the mass ratio of nitrile rubber, halamine-quaternary ammonium salt modified attapulgite, zinc oxide, accelerator dibenzothiazole disulfide, sulfur, stearic acid, and antioxidant 4010 is 100:3-8:1-3:1.5-3.2:2-4.5:2-3.5:1.5-3.

[0010] 3. Beneficial technical effects Compared with the prior art, the present invention has the following experimental principles and beneficial technical effects: The antibacterial attapulgite modified nitrile rubber comprises the following steps: firstly, γ-methacryloxypropyltrimethoxysilane is used to perform alkenyl modification on the attapulgite; then, the alkenyl introduced on the surface of the attapulgite is reacted with dimethylaminoethyl methacrylate and acrylonitrile in a (NH4)2S2O8-Na2SO3 redox system for in-situ polymerization for 8-16 hours, thereby obtaining attapulgite containing polyacrylonitrile and dimethylamino groups; then, the dimethylamino groups on the attapulgite react with the bromine on the bromooctyl group to undergo nucleophilic substitution reaction; then, the attapulgite is treated with tert-butyl hypochlorite to obtain halamine-quaternary ammonium salt modified attapulgite with dual antibacterial functional groups; and finally, the attapulgite is blended with the nitrile rubber. , vulcanization, and thus the antibacterial attapulgite modified nitrile rubber is obtained. Since acrylonitrile monomer is used in the process of modifying the attapulgite, polyacrylonitrile segments are formed on the surface of the attapulgite, and polyacrylonitrile segments are also present in the nitrile rubber, thereby enhancing the compatibility with the nitrile rubber, and making the attapulgite have better dispersion in the nitrile rubber, and the grafting of organic polymer macromolecules also inhibits the occurrence of self-agglomeration of the attapulgite, so that the attapulgite can be used as a reinforcing phase in the nitrile rubber matrix, and the two have a very good interface bonding, showing the properties of a granular reinforcing agent, thereby enhancing the mechanical properties of the nitrile rubber, and improving its tensile strength and elongation at break.

[0011] The antibacterial attapulgite-modified nitrile rubber has good compatibility due to the polyacrylonitrile chain segments introduced on the surface of the attapulgite, so that the grafted bifunctional antibacterial small molecules can also be evenly dispersed in the nitrile rubber matrix, and have a more excellent antibacterial effect. The quaternary ammonium salt antibacterial agent and the halamine antibacterial agent can both damage the cell membranes of harmful bacteria, microorganisms and other organisms, causing the biomass in the cells to leak out, thereby playing a bactericidal role. Under the bifunctional action of the halamine group and the quaternary ammonium salt group, the antibacterial activity is better, and the grafting method avoids the precipitation and separation of small molecules due to compatibility, and has a more long-lasting antibacterial performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 To prepare the reaction diagram of functionalized modified attapulgite; Figure 2 Reaction diagram for preparing halamine-quaternary ammonium salt modified attapulgite. DETAILED DESCRIPTION

[0013] A method for preparing antibacterial attapulgite-modified nitrile rubber, characterized in that it comprises the following steps: (1) Add 1.5 g of attapulgite to 60-100 ml of toluene solvent, disperse by ultrasonication, then add 0.6-1.8 g of γ-methacryloxypropyltrimethoxysilane, heat to 90-110° C., stir and react for 6-12 h, after the reaction is complete, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add 1 g of olefin-modified attapulgite to 30-80 ml of deionized water, disperse by ultrasonication, then add 1.5-2.5 g of acrylonitrile, 0.3-0.55 g of dimethylaminoethyl methacrylate and 0.04-0.08 g of emulsifier sodium dodecyl sulfate in sequence, heat to 40-60 ° C under a nitrogen atmosphere, add 0.02-0.05 g of ammonium persulfate, then add dropwise an aqueous solution containing 0.01-0.02 g of Na2SO3, stir and perform in-situ polymerization for 8-16 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain functionalized modified attapulgite; (3) 0.5-1.2g of the molecular formula is C 13 H 23 BrN2O2-bromooctyl dimethyl hydantoin and 2 g of functionalized modified attapulgite are added to 20-60 ml of acetonitrile solvent, followed by adding 0.1-0.2 g of K2CO3, heating to 60-80°C, reflux reaction for 6-12 hours, and after the reaction is completed, centrifugation, washing with anhydrous ethanol, and then treated with tert-butyl hypochlorous acid and vacuum drying to obtain halamine-quaternary ammonium salt modified attapulgite; (4) Add 50 g of nitrile rubber, 1.5-4 g of halamine-quaternary ammonium salt modified attapulgite, 0.5-1.5 g of zinc oxide, 0.8-1.6 g of accelerator dibenzothiazole disulfide, 1-2.2 g of sulfur, 1-1.5 g of stearic acid, and 0.8-1.5 g of antioxidant 4010 into a stirring device in sequence, stir and mix for 2-4 h, and then use a flat vulcanizer to vulcanize in a mold at 45-65 ° C for 24-36 h to obtain an antibacterial attapulgite modified nitrile rubber.

[0014] Example 1

[0015] (1) Add 1.5 g of attapulgite to 60 ml of toluene solvent, disperse by ultrasonication, then add 0.6 g of γ-methacryloxypropyltrimethoxysilane, heat to 90 °C, stir and react for 6 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add 1 g of olefin-modified attapulgite to 30 ml of deionized water, disperse by ultrasonication, then add 1.5 g of acrylonitrile, 0.3 g of dimethylaminoethyl methacrylate and 0.04 g of emulsifier sodium dodecyl sulfate in sequence, heat to 40 °C under nitrogen atmosphere, add 0.02 g of ammonium persulfate, then add dropwise an aqueous solution containing 0.01 g of Na2SO3, stir and perform in-situ polymerization for 8 h, after the reaction is completed, centrifuge, wash with acetone and dry in vacuum to obtain functionalized modified attapulgite; (3) 0.5 g of the molecular formula is C 13 H 23 BrN2O2-bromooctyl dimethyl hydantoin and 2g of functionalized modified attapulgite are added to 20ml of acetonitrile solvent, followed by adding 0.1g of K2CO3, heating to 60°C, reflux reaction for 6h, and after the reaction is completed, centrifugation, washing with anhydrous ethanol, and then treated with tert-butyl hypochlorous acid and vacuum drying to obtain halamine-quaternary ammonium salt modified attapulgite; (4) 50 g of nitrile rubber, 1.5 g of halamine-quaternary ammonium salt modified attapulgite, 0.5 g of zinc oxide, 0.8 g of accelerator dibenzothiazole disulfide, 1 g of sulfur, 1 g of stearic acid, and 0.8 g of antioxidant 4010 were added into a stirring device in sequence, stirred and mixed for 2 h, and then vulcanized in a mold at 45 ° C for 24 h using a flat vulcanizer to obtain antibacterial attapulgite modified nitrile rubber.

[0016] Example 2

[0017] (1) Add 1.5 g of attapulgite to 70 ml of toluene solvent, disperse by ultrasonication, then add 0.8 g of γ-methacryloxypropyltrimethoxysilane, heat to 95 °C, stir and react for 8 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add 1 g of olefin-modified attapulgite to 40 ml of deionized water, disperse by ultrasonication, then add 1.8 g of acrylonitrile, 0.35 g of dimethylaminoethyl methacrylate and 0.05 g of emulsifier sodium dodecyl sulfate in sequence, heat to 45 °C under nitrogen atmosphere, add 0.03 g of ammonium persulfate, then add dropwise an aqueous solution containing 0.012 g of Na2SO3, stir for in-situ polymerization for 10 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain functionalized modified attapulgite; (3) 0.7 g of the molecular formula is C 13 H 23BrN2O2-containing bromooctyl dimethyl hydantoin and 2 g of functionalized modified attapulgite were added to 30 ml of acetonitrile solvent, followed by addition of 0.12 g of K2CO3, heating to 65 ° C, reflux reaction for 8 h, and after the reaction was completed, centrifugation, washing with anhydrous ethanol, and then treated with tert-butyl hypochlorous acid and vacuum dried to obtain halamine-quaternary ammonium salt modified attapulgite; (4) 50 g of nitrile rubber, 1.8 g of halamine-quaternary ammonium salt modified attapulgite, 0.8 g of zinc oxide, 1 g of accelerator dibenzothiazole disulfide, 1.3 g of sulfur, 1.1 g of stearic acid, and 1 g of antioxidant 4010 were added into a stirring device in sequence, stirred and mixed for 2.5 h, and then vulcanized at 50 ° C for 30 h in a mold using a flat vulcanizer to obtain antibacterial attapulgite modified nitrile rubber.

[0018] Example 3

[0019] (1) Add 1.5 g of attapulgite to 80 ml of toluene solvent, disperse by ultrasonication, then add 1.4 g of γ-methacryloxypropyltrimethoxysilane, heat to 100 °C, stir and react for 9 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add 1 g of olefin-modified attapulgite to 50 ml of deionized water, disperse by ultrasonication, then add 2 g of acrylonitrile, 0.45 g of dimethylaminoethyl methacrylate and 0.06 g of emulsifier sodium dodecyl sulfate in sequence, heat to 50 °C under nitrogen atmosphere, add 0.04 g of ammonium persulfate, then add dropwise an aqueous solution containing 0.015 g of Na2SO3, stir for in-situ polymerization for 12 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain functionalized modified attapulgite; (3) 0.9 g of the molecular formula is C 13 H 23 BrN2O2-containing bromooctyl dimethyl hydantoin and 2 g of functionalized modified attapulgite were added to 40 ml of acetonitrile solvent, followed by addition of 0.15 g of K2CO3, heating to 70 ° C, reflux reaction for 8 h, and after the reaction was completed, centrifugation, washing with anhydrous ethanol, and then treated with tert-butyl hypochlorous acid and vacuum dried to obtain halamine-quaternary ammonium salt modified attapulgite; (4) 50 g of nitrile rubber, 2.3 g of halamine-quaternary ammonium salt modified attapulgite, 1 g of zinc oxide, 1.2 g of accelerator dibenzothiazole disulfide, 1.6 g of sulfur, 1.2 g of stearic acid, and 1.2 g of antioxidant 4010 were added into a stirring device in sequence, stirred and mixed for 3 h, and then vulcanized at 55 °C for 30 h in a mold using a flat vulcanizer to obtain an antibacterial attapulgite-modified nitrile rubber.

[0020] Example 4

[0021] (1) Add 1.5 g of attapulgite to 90 ml of toluene solvent, disperse by ultrasonication, then add 1.6 g of γ-methacryloxypropyltrimethoxysilane, heat to 110 °C, stir and react for 10 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add 1 g of olefin-modified attapulgite to 70 ml of deionized water, disperse by ultrasonication, then add 2.2 g of acrylonitrile, 0.5 g of dimethylaminoethyl methacrylate and 0.07 g of emulsifier sodium dodecyl sulfate in sequence, heat to 55 °C under nitrogen atmosphere, add 0.04 g of ammonium persulfate, then add dropwise an aqueous solution containing 0.018 g of Na2SO3, stir for in-situ polymerization for 12 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain functionalized modified attapulgite; (3) 0.9 g of the molecular formula is C 13 H 23 BrN2O2-containing bromooctyl dimethyl hydantoin and 2 g of functionalized modified attapulgite were added to 50 ml of acetonitrile solvent, followed by addition of 0.18 g of K2CO3, heating to 75°C, and reflux reaction for 10 h. After the reaction was completed, centrifugation was performed, and the mixture was washed with anhydrous ethanol, treated with tert-butyl hypochlorite, and vacuum dried to obtain halamine-quaternary ammonium salt-modified attapulgite. (4) 50 g of nitrile rubber, 3.2 g of halamine-quaternary ammonium salt modified attapulgite, 1.2 g of zinc oxide, 1.4 g of accelerator dibenzothiazole disulfide, 1.8 g of sulfur, 1.4 g of stearic acid, and 1.4 g of antioxidant 4010 were added into a stirring device in sequence, stirred and mixed for 3 h, and then vulcanized at 60 ° C for 30 h in a mold using a flat vulcanizer to obtain antibacterial attapulgite modified nitrile rubber.

[0022] Example 5

[0023] (1) Add 1.5 g of attapulgite to 100 ml of toluene solvent, disperse by ultrasonication, then add 1.8 g of γ-methacryloxypropyltrimethoxysilane, heat to 110 °C, stir and react for 12 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add 1 g of olefin-modified attapulgite to 80 ml of deionized water, disperse by ultrasonication, then add 2.5 g of acrylonitrile, 0.55 g of dimethylaminoethyl methacrylate and 0.08 g of emulsifier sodium dodecyl sulfate in sequence, heat to 60 °C under nitrogen atmosphere, add 0.05 g of ammonium persulfate, then add dropwise an aqueous solution containing 0.02 g of Na2SO3, stir for in-situ polymerization for 16 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain functionalized modified attapulgite; (3) 1.2 g of the molecular formula is C13 H 23 BrN2O2-bromooctyl dimethyl hydantoin and 2 g of functionalized modified attapulgite were added to 60 ml of acetonitrile solvent, followed by 0.2 g of K2CO3, heated to 80 ° C, refluxed for 12 h, and after the reaction was completed, centrifuged, washed with anhydrous ethanol, treated with tert-butyl hypochlorous acid, and vacuum dried to obtain halamine-quaternary ammonium salt modified attapulgite; (4) 50 g of nitrile rubber, 4 g of halamine-quaternary ammonium salt modified attapulgite, 1.5 g of zinc oxide, 1.6 g of accelerator dibenzothiazole disulfide, 2.2 g of sulfur, 1.5 g of stearic acid, and 1.5 g of antioxidant 4010 were added into a stirring device in sequence, stirred and mixed for 3 h, and then vulcanized at 65 ° C in a mold for 36 h using a flat vulcanizer to obtain antibacterial attapulgite modified nitrile rubber.

[0024] Comparative Example 1 (1) Add 1.5 g of attapulgite to 90 ml of toluene solvent, disperse by ultrasonication, then add 1.6 g of γ-methacryloxypropyltrimethoxysilane, heat to 100 °C, stir and react for 8 h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add 1 g of olefin-modified attapulgite to 50 ml of deionized water, disperse by ultrasonication, then add 5 g of acrylonitrile, 0.4 g of dimethylaminoethyl methacrylate and 0.06 g of emulsifier sodium dodecyl sulfate in sequence, heat to 50 °C under nitrogen atmosphere, add 0.03 g of ammonium persulfate, then add dropwise an aqueous solution containing 0.01 g of Na2SO3, stir and perform in-situ polymerization for 10 h, after the reaction is completed, centrifuge, wash with acetone and dry in vacuum to obtain functionalized modified attapulgite; (3) 50 g of nitrile rubber, 3 g of functionalized modified attapulgite, 1 g of zinc oxide, 1.2 g of accelerator dibenzothiazole disulfide, 1.6 g of sulfur, 1.3 g of stearic acid, and 1.2 g of antioxidant 4010 were added into a stirring device in sequence, stirred and mixed for 2 h, and then vulcanized at 45 °C in a mold for 24 h using a flat vulcanizer to obtain attapulgite-modified nitrile rubber.

[0025] The nitrile rubbers prepared in Examples 1-5 and Comparative Example 1 are compared as follows: The nitrile rubbers prepared in the embodiment and the comparative example were respectively made into standard tensile specimens, and the tensile strength and elongation at break were tested using a CMT-5 electronic universal testing machine, and the test standard was GB / T 528-2009.

[0026]

[0027] The nitrile rubber prepared in the example and the comparative example was cut into small discs with a diameter of 5 mm, and the Escherichia coli suspension was smeared on the surface of the nutrient agar plate. After culturing at 37° C. for 18 h, the diameter of the inhibition zone was observed.

[0028]

Claims

1. An antibacterial attapulgite-modified nitrile rubber, characterized in that: The method for preparing an antibacterial attapulgite-modified nitrile rubber comprises the following steps: (1) Add attapulgite to toluene solvent, disperse by ultrasonication, then add γ-methacryloxypropyltrimethoxysilane, heat to 90-110°C, stir and react for 6-12h, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain olefin-modified attapulgite; (2) Add the olefin-modified attapulgite to deionized water, perform ultrasonic dispersion, then add acrylonitrile, dimethylaminoethyl methacrylate and emulsifier sodium dodecyl sulfonate in sequence, raise the temperature to 40-60°C under a nitrogen atmosphere, add ammonium persulfate, then add Na2SO3 solution dropwise, stir for in-situ polymerization for 8-16 hours, after the reaction is completed, centrifuge, wash with acetone, and vacuum dry to obtain functionalized modified attapulgite; (3) The molecular formula is C 13 H 23 BrN2O2-bromooctyl dimethyl hydantoin and functionalized modified attapulgite are added to acetonitrile solvent, followed by addition of K2CO3, heating to 60-80°C, reflux reaction for 6-12h, and after the reaction is completed, centrifugation, washing with anhydrous ethanol, and then treated with tert-butyl hypochlorous acid and vacuum dried to obtain halamine-quaternary ammonium salt modified attapulgite; (4) Add nitrile rubber, halamine-quaternary ammonium salt modified attapulgite, zinc oxide, accelerator dibenzothiazole disulfide, sulfur, stearic acid, and antioxidant 4010 into a stirring device in sequence, stir and mix for 2-4 hours, and then use a flat plate vulcanizer to vulcanize in a mold at 45-65°C for 24-36 hours to obtain an antibacterial attapulgite modified nitrile rubber.

2. The antibacterial attapulgite-modified nitrile rubber according to claim 1, characterized in that: In the step (1), the mass ratio of toluene, attapulgite and γ-methacryloxypropyltrimethoxysilane is 2800-5600:100:40-120.

3. The antibacterial attapulgite-modified nitrile rubber according to claim 1, characterized in that: In the step (2), the mass ratio of deionized water, olefin-modified attapulgite, acrylonitrile, dimethylaminoethyl methacrylate, emulsifier sodium dodecyl sulfate, ammonium persulfate and Na2SO3 is 3000-8000:100:150-250:30-55:4-8:2-5:1-2.

5.

4. The antibacterial attapulgite-modified nitrile rubber according to claim 1, characterized in that: In the step (3), the mass ratio of acetonitrile, functionalized modified attapulgite, bromooctyl dimethyl hydantoin and K2CO3 is 1500-4800:100:25-60:5-10.

5. The antibacterial attapulgite-modified nitrile rubber according to claim 1, characterized in that: In the step (4), the mass ratio of nitrile rubber, halamine-quaternary ammonium salt modified attapulgite, zinc oxide, accelerator dibenzothiazole disulfide, sulfur, stearic acid, and antioxidant 4010 is 100:3-8:1-3:1.5-3.2:2-4.5:2-3.5:1.5-3.

Images