CN107353477B - Antibacterial wear-resistant boot cover and preparation method thereof - Google Patents
Antibacterial wear-resistant boot cover and preparation method thereof Download PDFInfo
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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Abstract
The invention discloses an antibacterial wear-resistant boot sleeve and a preparation method thereof, and the preparation process is simple and the production cost is low; after the antibacterial wear-resistant boot cover is used, toes can be effectively protected, the puncture resistance is realized, the insulation is realized, the acid and alkali resistance is realized, and the antibacterial wear-resistant boot cover has the advantages of excellent antibacterial effect, good anti-aging effect, good wear resistance and the like. The material of the antibacterial wear-resistant boot sleeve is antibacterial wear-resistant polyethylene plastic, and the antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 75-85 parts of polyethylene, 0.4-0.9 part of N, N '-ethylene bis stearamide, 5-10 parts of talcum powder, 1-5 parts of zinc stearate, 0.2-0.4 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.4-0.9 part of polytetrafluoroethylene, 0.1-0.4 part of bacteriostatic agent and 0.3-0.7 part of polyethylene wax.
Description
Technical Field
The invention relates to a boot sleeve, in particular to an antibacterial wear-resistant boot sleeve and a preparation method thereof.
Background
The boot cover has the safety protection function on the foot, such as toe protection, puncture prevention, insulation, acid and alkali resistance and the like. The working environment of the boot cover is generally rich in dust, the dust easily enters the interior of the shoe from the shoe barrel, and the interior of the shoe is difficult to clean, so that inconvenience is brought to a user. Although shoes with dustproof functions exist in the prior art, the dustproof structure is generally fixed on the shoes and is not easy to clean, so that the appearance of the shoes is affected.
The boot sleeve can be made of antibacterial wear-resistant plastic, and the antibacterial plastic is formed by adding an antibacterial agent into the plastic, so that the plastic product has an internal antibacterial function and can kill or inhibit the reproduction of bacteria stained on the surface of the plastic within a certain period of time. Compared with the conventional physical and chemical methods, the antibacterial plastic has long sterilization time, and is economical and convenient. The development of antibacterial plastics as a novel functional material for more than ten years has made great progress in material development and application, and research on antibacterial agents and antibacterial materials is continuously carried out, and novel antibacterial agents and antibacterial material varieties with high quality and low price are continuously developed. At present, organic-inorganic composite antibacterial agents have been developed, fully combining the advantages of inorganic antibacterial agents and organic antibacterial agents, and becoming the latest variety of antibacterial materials.
However, the antibacterial performance of domestic antibacterial agents is different from that of foreign antibacterial agents, and many domestic colleges and universities and scientific research institutes are also carrying out research work on the aspect, tracking the foreign advanced technology in time and cooperating with enterprises to develop novel antibacterial plastic products in the form of production, study and research.
At present, the processing of the antibacterial plastics usually adopts a melt blending mode, or antibacterial master batches are prepared from antibacterial agents and then mixed with resin according to a certain proportion for post-processing, or the antibacterial agents with a certain proportion are directly added into a substrate for post-processing. The dispersibility of the nano antibacterial agent in the plastic and the compatibility of the nano antibacterial agent with the plastic are key technologies for preparing the nano antibacterial plastic.
Disclosure of Invention
The invention provides an antibacterial wear-resistant boot sleeve and a preparation method thereof.
The technical scheme is as follows:
an antibacterial wear-resistant boot sleeve is made of antibacterial wear-resistant polyethylene plastic.
The antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 75-85 parts of polyethylene, 0.4-0.9 part of N, N '-ethylene bis stearamide, 5-10 parts of talcum powder, 1-5 parts of zinc stearate, 0.2-0.4 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.4-0.9 part of polytetrafluoroethylene, 0.1-0.4 part of bacteriostatic agent and 0.3-0.7 part of polyethylene wax.
As an improved technical scheme, the antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 75-85 parts of polyethylene, 0.4-0.9 part of N, N '-ethylene bis stearamide, 5-10 parts of modified talcum powder, 1-5 parts of zinc stearate, 0.2-0.4 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.4-0.9 part of polytetrafluoroethylene, 0.1-0.4 part of bacteriostatic agent and 0.3-0.7 part of polyethylene wax.
The preparation method of the modified talcum powder comprises the following steps: mixing talcum powder, nano-silver aqueous solution and aqueous silane coupling agent KH-460 in a weight ratio of (5-15): (0.8-1.3): (0.2-0.4) stirring at the rotation speed of 500-800 rpm for 25-35 minutes, uniformly mixing, and drying at the temperature of 85-95 ℃ for 22-26 hours to obtain the modified talcum powder.
The nano-silver aqueous solution is prepared by the following method: adding 0.3-0.35g of silver nitrate into 9-11mL of water, and uniformly mixing to obtain a solution A; adding 0.008-0.012g of sodium carboxymethylcellulose into 18-22mL of water, stirring at the rotation speed of 150-; adding 0.08-0.12mL of the solution A into the whole solution B, and heating to 55-65 ℃ in a water bath; stirring and reacting for 3-5 hours at the rotation speed of 150-.
The bacteriostatic agent is one or more of triethanolamine undecylenate, isopropyl 4-hydroxybenzoate and butyl benzoate. In one embodiment of the invention, the bacteriostatic agent consists of 55-65 wt% triethanolamine undecylenate and 35-45 wt% butyl benzoate.
The polyethylene is low density polyethylene.
The particle size of the talcum powder is 350-450 meshes.
A preparation method of an antibacterial wear-resistant boot sleeve comprises the steps of extruding and blowing a film from the antibacterial wear-resistant polyethylene plastic by using a plastic film blowing machine to obtain a film; the film is made into the antibiotic wear-resistant boot cover according to the conventional process.
The technical effects are as follows:
the antibacterial wear-resistant boot cover and the preparation method thereof have the advantages of simple preparation process and low production cost; after the antibacterial wear-resistant boot cover is used, toes can be effectively protected, the puncture resistance is realized, the insulation is realized, the acid and alkali resistance is realized, and the antibacterial wear-resistant boot cover has the advantages of excellent antibacterial effect, good anti-aging effect, good wear resistance and the like.
Detailed Description
Examples aqueous silane coupling agent KH-460 was supplied from Nanjing Kongshi chemical Co., Ltd.
In the examples, the polyethylene is low density polyethylene of LD100 brand provided by Beijing Yanshan division of petrochemical Co., Ltd.
In the examples, the talc powder is 400 mesh plastic grade talc powder provided by Jining HuaKai resin Co.
Examples N, N' -ethylene bis stearamide, CAS No.: 110-30-5.
Examples zinc stearate, CAS number: 557-05-1.
Example 2, 2' -methylenebis (6-cyclohexyl-4-methylphenol), CAS number: 4066-02-8.
The polytetrafluoroethylene in the examples was injection molded grade polytetrafluoroethylene available from DuPont, USA under the 340-J trademark.
In the embodiment, the polyethylene wax is the polyethylene wax with the model of PE-CH-3 provided by Shandong Feng synthetic chemical company Limited in Jiangyin city.
Examples silver nitrate, CAS number: 7761-88-8.
In the examples, sodium carboxymethylcellulose was supplied by Hebei Yanxinghe chemical Co., Ltd, and was type IM 6.
Examples sodium hydroxide, CAS number: 1310-73-2.
Examples triethanolamine undecylenate, english name: 2- [ bis (2-hydroxyethenyl) amino ] ethanol, undec-10-enoic acid, CAS number: 84471-25-0.
Example isopropyl 4-hydroxybenzoates, CAS No.: 4191-73-5.
Examples butyl benzoate, CAS number: 136-60-7.
Example 1
An antibacterial wear-resistant boot sleeve is made of antibacterial wear-resistant polyethylene plastic.
The antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 80 parts of polyethylene, 0.6 part of N, N '-ethylene bis stearamide, 8 parts of modified talcum powder, 3 parts of zinc stearate, 0.3 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.55 part of polytetrafluoroethylene, 0.25 part of triethanolamine undecylenate and 0.45 part of polyethylene wax.
The preparation method of the modified talcum powder comprises the following steps: mixing talcum powder, nano-silver aqueous solution and aqueous silane coupling agent KH-460 in a weight ratio of 10: 1: 0.3, stirring for 30 minutes at the rotating speed of 600 revolutions per minute, uniformly mixing, and drying for 24 hours at the temperature of 90 ℃ to obtain the modified talcum powder.
The nano-silver aqueous solution is prepared by the following method: adding 0.32g of silver nitrate into 10mL of deionized water, and uniformly mixing to obtain a solution A; adding 0.01g of sodium carboxymethylcellulose into 20mL of deionized water, stirring for 30 minutes at the rotating speed of 180 r/min, and adjusting the pH value to 8 by using 1mol/L sodium hydroxide aqueous solution to obtain a solution B; adding 0.1mL of the solution A into the whole solution B, and heating to 60 ℃ in a water bath; stirring and reacting for 4 hours at the rotating speed of 180 r/min to obtain the nano-silver aqueous solution.
The preparation method of the antibacterial wear-resistant polyethylene plastic comprises the following steps: weighing polyethylene, N '-ethylene bis stearamide, modified talcum powder, zinc stearate, 2' -methylene bis (6-cyclohexyl-4-methylphenol), polytetrafluoroethylene, triethanolamine undecylenate and polyethylene wax according to the formula, putting into a stirrer, stirring at 300 revolutions per minute and 40 ℃ for 20min, and then feeding into a double-screw extruder, wherein two screws of the double-screw extruder rotate in the same direction, and the rotating speed of the screws is 200 revolutions per minute; the part of a charging barrel of the double-screw extruder, from a feeding hole to an extrusion opening die, is sequentially an I area, an II area, an III area and an IV area, wherein the temperature of the I area is 150 ℃, the temperature of the II area is 170 ℃, the temperature of the III area is 180 ℃, the temperature of the IV area is 190 ℃, and the temperature of the extrusion opening die is 200 ℃; a screw rod in the third zone is provided with a reflux screw block; the vacuum degree in the charging barrel of the double-screw extruder is 0.02 MPa; the mixture is heated and melted, flows out through a porous neck mold under the pushing of a screw of a double-screw extruder, is hot-cut into cylindrical granules with the diameter of 3 multiplied by 3mm by a cutting machine after being pulled into strips and cooled by water, and then the antibacterial wear-resistant polyethylene plastic is prepared.
A preparation method of the antibacterial wear-resistant boot sleeve comprises the steps of extruding and blowing the antibacterial wear-resistant polyethylene plastic by a plastic film blowing machine, wherein the temperatures of the four sections of the rear section of a charging barrel of the film blowing machine are respectively 180 ℃, 190 ℃ and 200 ℃, the temperatures of the four sections of the front section of the charging barrel are respectively 200 ℃, 210 ℃ and 220 ℃, and the temperatures of the two sections of a nose are respectively 230 ℃ and 230 ℃. The blowing-up ratio is 1.5, the screw rotating speed is 40r/min, and the traction speed is 30m/min, so that a film is obtained; the film is made into the antibiotic wear-resistant boot cover according to the conventional process.
Example 2
An antibacterial wear-resistant boot sleeve is made of antibacterial wear-resistant polyethylene plastic.
The antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 80 parts of polyethylene, 0.6 part of N, N '-ethylene bis stearamide, 8 parts of talcum powder, 3 parts of zinc stearate, 0.3 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.55 part of polytetrafluoroethylene, 0.25 part of triethanolamine undecylenate and 0.45 part of polyethylene wax.
The preparation method of the antibacterial wear-resistant polyethylene plastic comprises the following steps: weighing polyethylene, N '-ethylene bis stearamide, talcum powder, zinc stearate, 2' -methylene bis (6-cyclohexyl-4-methylphenol), polytetrafluoroethylene, triethanolamine undecylenate and polyethylene wax according to the formula, putting into a stirrer, stirring at 300 revolutions per minute and 40 ℃ for 20min, and then feeding into a double-screw extruder, wherein two screws of the double-screw extruder rotate in the same direction, and the rotating speed of the screws is 200 revolutions per minute; the part of a charging barrel of the double-screw extruder, from a feeding hole to an extrusion opening die, is sequentially an I area, an II area, an III area and an IV area, wherein the temperature of the I area is 150 ℃, the temperature of the II area is 170 ℃, the temperature of the III area is 180 ℃, the temperature of the IV area is 190 ℃, and the temperature of the extrusion opening die is 200 ℃; a screw rod in the third zone is provided with a reflux screw block; the vacuum degree in the charging barrel of the double-screw extruder is 0.02 MPa; the mixture is heated and melted, flows out through a porous neck mold under the pushing of a screw of a double-screw extruder, is hot-cut into cylindrical granules with the diameter of 3 multiplied by 3mm by a cutting machine after being pulled into strips and cooled by water, and then the antibacterial wear-resistant polyethylene plastic is prepared.
A preparation method of the antibacterial wear-resistant boot sleeve comprises the steps of extruding and blowing the antibacterial wear-resistant polyethylene plastic by a plastic film blowing machine, wherein the temperatures of the four sections of the rear section of a charging barrel of the film blowing machine are respectively 180 ℃, 190 ℃ and 200 ℃, the temperatures of the four sections of the front section of the charging barrel are respectively 200 ℃, 210 ℃ and 220 ℃, and the temperatures of the two sections of a nose are respectively 230 ℃ and 230 ℃. The blowing-up ratio is 1.5, the screw rotating speed is 40r/min, and the traction speed is 30m/min, so that a film is obtained; the film is made into the antibiotic wear-resistant boot cover according to the conventional process.
Example 3
An antibacterial wear-resistant boot sleeve is made of antibacterial wear-resistant polyethylene plastic.
The antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 80 parts of polyethylene, 0.6 part of N, N '-ethylene bis stearamide, 8 parts of modified talcum powder, 3 parts of zinc stearate, 0.3 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.55 part of polytetrafluoroethylene, 0.25 part of 4-hydroxy isopropyl benzoate and 0.45 part of polyethylene wax.
The preparation method of the modified talcum powder comprises the following steps: mixing talcum powder, nano-silver aqueous solution and aqueous silane coupling agent KH-460 in a weight ratio of 10: 1: 0.3, stirring for 30 minutes at the rotating speed of 600 revolutions per minute, uniformly mixing, and drying for 24 hours at the temperature of 90 ℃ to obtain the modified talcum powder.
The nano-silver aqueous solution is prepared by the following method: adding 0.32g of silver nitrate into 10mL of deionized water, and uniformly mixing to obtain a solution A; adding 0.01g of sodium carboxymethylcellulose into 20mL of deionized water, stirring for 30 minutes at the rotating speed of 180 r/min, and adjusting the pH value to 8 by using 1mol/L sodium hydroxide aqueous solution to obtain a solution B; adding 0.1mL of the solution A into the whole solution B, and heating to 60 ℃ in a water bath; stirring and reacting for 4 hours at the rotating speed of 180 r/min to obtain the nano-silver aqueous solution.
The preparation method of the antibacterial wear-resistant polyethylene plastic comprises the following steps: weighing polyethylene, N '-ethylene bis stearamide, modified talcum powder, zinc stearate, 2' -methylene bis (6-cyclohexyl-4-methylphenol), polytetrafluoroethylene, 4-isopropyl hydroxybenzoate and polyethylene wax according to the formula, putting into a stirrer, stirring at 300 revolutions per minute and 40 ℃ for 20min, and then feeding into a double-screw extruder, wherein two screws of the double-screw extruder rotate in the same direction, and the rotating speed of the screws is 200 revolutions per minute; the part of a charging barrel of the double-screw extruder, from a feeding hole to an extrusion opening die, is sequentially an I area, an II area, an III area and an IV area, wherein the temperature of the I area is 150 ℃, the temperature of the II area is 170 ℃, the temperature of the III area is 180 ℃, the temperature of the IV area is 190 ℃, and the temperature of the extrusion opening die is 200 ℃; a screw rod in the third zone is provided with a reflux screw block; the vacuum degree in the charging barrel of the double-screw extruder is 0.02 MPa; the mixture is heated and melted, flows out through a porous neck mold under the pushing of a screw of a double-screw extruder, is hot-cut into cylindrical granules with the diameter of 3 multiplied by 3mm by a cutting machine after being pulled into strips and cooled by water, and then the antibacterial wear-resistant polyethylene plastic is prepared.
A preparation method of the antibacterial wear-resistant boot sleeve comprises the steps of extruding and blowing the antibacterial wear-resistant polyethylene plastic by a plastic film blowing machine, wherein the temperatures of the four sections of the rear section of a charging barrel of the film blowing machine are respectively 180 ℃, 190 ℃ and 200 ℃, the temperatures of the four sections of the front section of the charging barrel are respectively 200 ℃, 210 ℃ and 220 ℃, and the temperatures of the two sections of a nose are respectively 230 ℃ and 230 ℃. The blowing-up ratio is 1.5, the screw rotating speed is 40r/min, and the traction speed is 30m/min, so that a film is obtained; the film is made into the antibiotic wear-resistant boot cover according to the conventional process.
Example 4
An antibacterial wear-resistant boot sleeve is made of antibacterial wear-resistant polyethylene plastic.
The antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 80 parts of polyethylene, 0.6 part of N, N '-ethylene bis stearamide, 8 parts of modified talcum powder, 3 parts of zinc stearate, 0.3 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.55 part of polytetrafluoroethylene, 0.25 part of butyl benzoate and 0.45 part of polyethylene wax.
The preparation method of the modified talcum powder comprises the following steps: mixing talcum powder, nano-silver aqueous solution and aqueous silane coupling agent KH-460 in a weight ratio of 10: 1: 0.3, stirring for 30 minutes at the rotating speed of 600 revolutions per minute, uniformly mixing, and drying for 24 hours at the temperature of 90 ℃ to obtain the modified talcum powder.
The nano-silver aqueous solution is prepared by the following method: adding 0.32g of silver nitrate into 10mL of deionized water, and uniformly mixing to obtain a solution A; adding 0.01g of sodium carboxymethylcellulose into 20mL of deionized water, stirring for 30 minutes at the rotating speed of 180 r/min, and adjusting the pH value to 8 by using 1mol/L sodium hydroxide aqueous solution to obtain a solution B; adding 0.1mL of the solution A into the whole solution B, and heating to 60 ℃ in a water bath; stirring and reacting for 4 hours at the rotating speed of 180 r/min to obtain the nano-silver aqueous solution.
The preparation method of the antibacterial wear-resistant polyethylene plastic comprises the following steps: weighing polyethylene, N '-ethylene bis stearamide, modified talcum powder, zinc stearate, 2' -methylene bis (6-cyclohexyl-4-methylphenol), polytetrafluoroethylene, butyl benzoate and polyethylene wax according to the formula, putting the materials into a stirrer, stirring at 300 revolutions per minute and 40 ℃ for 20min, and then feeding the materials into a double-screw extruder, wherein two screws of the double-screw extruder rotate in the same direction, and the rotating speed of the screws is 200 revolutions per minute; the part of a charging barrel of the double-screw extruder, from a feeding hole to an extrusion opening die, is sequentially an I area, an II area, an III area and an IV area, wherein the temperature of the I area is 150 ℃, the temperature of the II area is 170 ℃, the temperature of the III area is 180 ℃, the temperature of the IV area is 190 ℃, and the temperature of the extrusion opening die is 200 ℃; a screw rod in the third zone is provided with a reflux screw block; the vacuum degree in the charging barrel of the double-screw extruder is 0.02 MPa; the mixture is heated and melted, flows out through a porous neck mold under the pushing of a screw of a double-screw extruder, is hot-cut into cylindrical granules with the diameter of 3 multiplied by 3mm by a cutting machine after being pulled into strips and cooled by water, and then the antibacterial wear-resistant polyethylene plastic is prepared.
A preparation method of the antibacterial wear-resistant boot sleeve comprises the steps of extruding and blowing the antibacterial wear-resistant polyethylene plastic by a plastic film blowing machine, wherein the temperatures of the four sections of the rear section of a charging barrel of the film blowing machine are respectively 180 ℃, 190 ℃ and 200 ℃, the temperatures of the four sections of the front section of the charging barrel are respectively 200 ℃, 210 ℃ and 220 ℃, and the temperatures of the two sections of a nose are respectively 230 ℃ and 230 ℃. The blowing-up ratio is 1.5, the screw rotating speed is 40r/min, and the traction speed is 30m/min, so that a film is obtained; the film is made into the antibiotic wear-resistant boot cover according to the conventional process.
Example 5
An antibacterial wear-resistant boot sleeve is made of antibacterial wear-resistant polyethylene plastic.
The antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 80 parts of polyethylene, 0.6 part of N, N '-ethylene bis stearamide, 8 parts of modified talcum powder, 3 parts of zinc stearate, 0.3 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.55 part of polytetrafluoroethylene, 0.15 part of triethanolamine undecylenate, 0.1 part of butyl benzoate and 0.45 part of polyethylene wax.
The preparation method of the modified talcum powder comprises the following steps: mixing talcum powder, nano-silver aqueous solution and aqueous silane coupling agent KH-460 in a weight ratio of 10: 1: 0.3, stirring for 30 minutes at the rotating speed of 600 revolutions per minute, uniformly mixing, and drying for 24 hours at the temperature of 90 ℃ to obtain the modified talcum powder.
The nano-silver aqueous solution is prepared by the following method: adding 0.32g of silver nitrate into 10mL of deionized water, and uniformly mixing to obtain a solution A; adding 0.01g of sodium carboxymethylcellulose into 20mL of deionized water, stirring for 30 minutes at the rotating speed of 180 r/min, and adjusting the pH value to 8 by using 1mol/L sodium hydroxide aqueous solution to obtain a solution B; adding 0.1mL of the solution A into the whole solution B, and heating to 60 ℃ in a water bath; stirring and reacting for 4 hours at the rotating speed of 180 r/min to obtain the nano-silver aqueous solution.
The preparation method of the antibacterial wear-resistant polyethylene plastic comprises the following steps: weighing polyethylene, N '-ethylene bis stearamide, modified talcum powder, zinc stearate, 2' -methylene bis (6-cyclohexyl-4-methylphenol), polytetrafluoroethylene, triethanolamine undecylenate, butyl benzoate and polyethylene wax according to the formula, putting into a stirrer, stirring at 300 revolutions per minute and 40 ℃ for 20min, and then feeding into a double-screw extruder, wherein two screws of the double-screw extruder rotate in the same direction, and the rotating speed of the screws is 200 revolutions per minute; the part of a charging barrel of the double-screw extruder, from a feeding hole to an extrusion opening die, is sequentially an I area, an II area, an III area and an IV area, wherein the temperature of the I area is 150 ℃, the temperature of the II area is 170 ℃, the temperature of the III area is 180 ℃, the temperature of the IV area is 190 ℃, and the temperature of the extrusion opening die is 200 ℃; a screw rod in the third zone is provided with a reflux screw block; the vacuum degree in the charging barrel of the double-screw extruder is 0.02 MPa; the mixture is heated and melted, flows out through a porous neck mold under the pushing of a screw of a double-screw extruder, is hot-cut into cylindrical granules with the diameter of 3 multiplied by 3mm by a cutting machine after being pulled into strips and cooled by water, and then the antibacterial wear-resistant polyethylene plastic is prepared.
Carrying out artificial accelerated aging experiments (at 90 ℃ for 500h) on the antibacterial wear-resistant polyethylene plastic according to a thermal oxidation aging experiment standard GB/T7141-2008; and the test of antibacterial performance is carried out by referring to GB21551.2-2010 special requirements of antibacterial materials with antibacterial, degerming and purifying functions of household and similar appliances. Detection bacteria: escherichia coli ATCC25922(Escherichia coli). The specific test result is as follows: the retention rate of tensile strength is 95.1%, the retention rate of impact strength is 98.7%, and the sterilization rate of escherichia coli is 99.5%.
A preparation method of the antibacterial wear-resistant boot sleeve comprises the steps of extruding and blowing the antibacterial wear-resistant polyethylene plastic by a plastic film blowing machine, wherein the temperatures of the four sections of the rear section of a charging barrel of the film blowing machine are respectively 180 ℃, 190 ℃ and 200 ℃, the temperatures of the four sections of the front section of the charging barrel are respectively 200 ℃, 210 ℃ and 220 ℃, and the temperatures of the two sections of a nose are respectively 230 ℃ and 230 ℃. The blowing-up ratio is 1.5, the screw rotating speed is 40r/min, and the traction speed is 30m/min, so that a film is obtained; the film is made into the antibiotic wear-resistant boot cover according to the conventional process.
Test example 1
Carrying out artificial accelerated aging experiments (at 90 ℃ for 500h) on the antibacterial wear-resistant polyethylene plastics prepared in the examples 1 to 4 according to the thermo-oxidative aging experiment standard GB/T7141-2008; and the test of antibacterial performance is carried out by referring to GB21551.2-2010 special requirements of antibacterial materials with antibacterial, degerming and purifying functions of household and similar appliances. Detection bacteria: escherichia coli ATCC25922(Escherichia coli). The specific test results are shown in table 1.
Table 1: performance test meter
In the embodiment 1 of the invention, the nano inorganic antibacterial agent modified talcum powder is adopted, so that the anti-aging and antibacterial properties are greatly improved. The reason for this is probably that the nano silver and the coupling agent compound modified talcum powder not only enables the talcum powder to have a certain antibacterial effect, but also increases the dispersibility and compatibility of the talcum powder in a polymer system, and the performance of the prepared antibacterial wear-resistant polyethylene plastic is obviously improved.
Claims (6)
1. An antibacterial wear-resistant boot cover is characterized in that the material is antibacterial wear-resistant polyethylene plastic; the antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 75-85 parts of polyethylene, 0.4-0.9 part of N, N '-ethylene bis stearamide, 5-10 parts of modified talcum powder, 1-5 parts of zinc stearate, 0.2-0.4 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.4-0.9 part of polytetrafluoroethylene, 0.1-0.4 part of bacteriostatic agent and 0.3-0.7 part of polyethylene wax;
the preparation method of the modified talcum powder comprises the following steps: mixing talcum powder, nano-silver aqueous solution and aqueous silane coupling agent KH-460 in a weight ratio of (5-15): (0.8-1.3): (0.2-0.4) stirring at the rotation speed of 500-800 rpm for 25-35 minutes, uniformly mixing, and drying at the temperature of 85-95 ℃ for 22-26 hours to obtain modified talcum powder;
the bacteriostatic agent consists of 55-65 wt% of undecylenic acid triethanolamine salt and 35-45 wt% of butyl benzoate.
2. The antibacterial wear-resistant boot cover according to claim 1, wherein the nano-silver aqueous solution is prepared by the following method: adding 0.3-0.35g of silver nitrate into 9-11mL of water, and uniformly mixing to obtain a solution A; adding 0.008-0.012g of sodium carboxymethylcellulose into 18-22mL of water, stirring at the rotation speed of 150-; adding 0.08-0.12mL of the solution A into the whole solution B, and heating to 55-65 ℃ in a water bath; stirring and reacting for 3-5 hours at the rotation speed of 150-.
3. Antimicrobial and wear-resistant footwear according to claim 1 or 2, wherein the polyethylene is low density polyethylene.
4. The antibacterial wear-resistant boot cover according to claim 1 or 2, wherein the particle size of the talc powder is 350-450 mesh.
5. The antibacterial wear-resistant boot cover according to claim 1, characterized in that the material is antibacterial wear-resistant polyethylene plastic; the antibacterial wear-resistant polyethylene plastic is prepared from the following raw materials in parts by weight: 80 parts of polyethylene, 0.6 part of N, N '-ethylene bis stearamide, 8 parts of modified talcum powder, 3 parts of zinc stearate, 0.3 part of 2, 2' -methylene bis (6-cyclohexyl-4-methylphenol), 0.55 part of polytetrafluoroethylene, 0.15 part of triethanolamine undecylenate, 0.1 part of butyl benzoate and 0.45 part of polyethylene wax;
the preparation method of the modified talcum powder comprises the following steps: mixing talcum powder, nano-silver aqueous solution and aqueous silane coupling agent KH-460 in a weight ratio of 10: 1: 0.3, stirring for 30 minutes at the rotating speed of 600 revolutions per minute, uniformly mixing, and drying for 24 hours at the temperature of 90 ℃ to obtain modified talcum powder;
the nano-silver aqueous solution is prepared by the following method: adding 0.32g of silver nitrate into 10mL of deionized water, and uniformly mixing to obtain a solution A; adding 0.01g of sodium carboxymethylcellulose into 20mL of deionized water, stirring for 30 minutes at the rotating speed of 180 r/min, and adjusting the pH value to 8 by using 1mol/L sodium hydroxide aqueous solution to obtain a solution B; adding 0.1mL of the solution A into the whole solution B, and heating to 60 ℃ in a water bath; stirring and reacting for 4 hours at the rotating speed of 180 r/min to obtain the nano-silver aqueous solution.
6. A method for preparing an antibacterial wear-resistant boot sleeve, wherein a film is obtained by extruding and blowing the antibacterial wear-resistant polyethylene plastic of any one of claims 1 to 5 by using a plastic film blowing machine; the film is made into the antibiotic wear-resistant boot cover according to the conventional process.
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| CN113150424B (en) * | 2021-04-22 | 2022-12-06 | 长春联塑实业有限公司 | Low-sag high-finish polyethylene composition and preparation method and application thereof |
| CN113429676B (en) * | 2021-07-20 | 2022-03-25 | 仙桃市鼎业劳保用品有限公司 | Wear-resistant polypropylene boot sleeve with antibacterial function and preparation method thereof |
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