CN112921654A - Antibacterial thermal bandage and preparation method thereof - Google Patents

Antibacterial thermal bandage and preparation method thereof Download PDF

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Publication number
CN112921654A
CN112921654A CN202110106642.XA CN202110106642A CN112921654A CN 112921654 A CN112921654 A CN 112921654A CN 202110106642 A CN202110106642 A CN 202110106642A CN 112921654 A CN112921654 A CN 112921654A
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base cloth
antibacterial
solution
bandage
mixing
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庄泽鑫
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/10—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material
    • D06B1/14—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/18—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines
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    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
    • D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
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    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/35—Heterocyclic compounds
    • D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
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    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D06M15/568—Reaction products of isocyanates with polyethers
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    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/12—Processes in which the treating agent is incorporated in microcapsules
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/38—Polyurethanes

Abstract

The invention discloses an antibacterial warm-keeping bandage which comprises the following raw materials in parts by weight: 100-120 parts of fabric base cloth, 10-20 parts of chitosan microsphere emulsion, 15-19 parts of thermal insulation material and 14-17 parts of antibacterial emulsion; wherein the warm-keeping material is modified styrene-acrylic emulsion; selecting 100% of full cotton yarn as weft yarn, preparing the warp yarn from bare spandex yarn, skin color terylene low stretch yarn and white spandex as fabric base cloth, adopting a double-roller coating method, soaking the base cloth in a heat-insulating material, and then feeding and rolling the base cloth attached with the heat-insulating material; then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage; the invention has good antibacterial performance, small heat conductivity coefficient and good heat preservation effect, and also improves the tensile strength performance of the bandage.

Description

Antibacterial thermal bandage and preparation method thereof
Technical Field
The invention belongs to the technical field of bandages, and particularly relates to an antibacterial thermal bandage and a preparation method thereof.
Background
The bandage is a gauze band for bandaging wound or affected part, is a common medical product, has many different types and various bandaging methods, and is suitable for limb, tail, head, chest and abdomen, and is simple in that it is a single shed band made of gauze or cotton cloth and suitable for the limb, tail, head and abdomen.
Reference CN1230439 discloses a novel medical bandage, which is prepared by coating polycaprolactone, powdered activated calcium carbonate, peptide white and a curing agent on a reticular fiber fabric with a synthetic resin; the manufacturing method comprises the following steps: (1) resin synthesis: dissolving polycaprolactone in organic solvent, heating while stirring, adding powdered active calcium carbonate, peptide white and curing agent, and stirring to mix; (2) manufacturing a bandage: laying the reticular fiber fabric, uniformly spraying the hot synthesized resin on the fiber fabric by high pressure, heating for aging, and cooling; or soaking the reticular fiber fabric in hot synthetic resin, taking out, heating, aging, and cooling. The bandage has light weight, good air permeability, high strength, and good X-ray transmittance
In the prior art, a plurality of microorganisms are usually adsorbed on the surface of a bandage in the use process, when a human body is tied with the bandage, the bandage is in a proper temperature condition, and the environment provides a good living environment for the microorganisms, so that the microorganisms can be rapidly propagated and then expand to the skin and the wound of the human body, and the wound can be subjected to cross infection; is mostly obtained by blending cotton polyester and spandex, and has common heat-insulating performance.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a bandage is often adsorbed with a plurality of microorganisms on the surface in the use process, when a human body is tied with the bandage, the bandage is in a proper temperature condition, and the environment provides a good living environment for the microorganisms, so that the microorganisms can be rapidly propagated and then expand to the skin and the wound of the human body, and the wound can be subjected to cross infection; is mostly obtained by blending cotton polyester and spandex, and has common heat-insulating performance, thereby providing an antibacterial warm-keeping bandage and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
an antibacterial thermal bandage comprises the following raw materials in parts by weight: 100-120 parts of fabric base cloth, 10-20 parts of chitosan microsphere emulsion, 15-19 parts of thermal insulation material and 14-17 parts of antibacterial emulsion; wherein the warm-keeping material is modified styrene-acrylic emulsion;
the preparation method of the antibacterial warm-keeping bandage comprises the following steps:
the first step is as follows: selecting 100% of all cotton yarn as weft yarn, preparing the warp yarn from bare spandex yarn, skin color terylene low stretch yarn and white spandex as fabric base cloth, warping the fabric base cloth in a liquid flow dyeing machine by using high-temperature water at 90-98 ℃ and the warp yarn and the weft yarn of the fabric base cloth in the processing process to obtain elasticity, warping the warp yarn on a rack, threading, pressing a roller, replacing a weft density gear, feeding the bandage produced by starting into a sizing machine, setting the temperature to 160-200 ℃ and the rotating speed to 1000-1200r/min, and setting the elasticity to 300-500%;
the second step is that: soaking the base cloth in the heat-insulating material by adopting a double-roller coating method, and then feeding and rolling the base cloth attached with the heat-insulating material; and then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage.
Preferably, the preparation process of the chitosan microsphere emulsion comprises the following steps:
the first step is as follows: mixing chitosan powder with 1% acetic acid solution by mass percent for dissolving to obtain solution A, and controlling the pH value of the solution A to be 2-4 by using acetic acid; obtaining a chitosan solution;
the second step is that: mixing a methylisothiazolinone solution with the mass fraction of 10% with a sodium tripolyphosphate solution with the concentration of 2g/L to obtain a B solution;
the third step: and dropwise adding the chitosan solution into the solution B, and stirring and mixing at room temperature to obtain the chitosan microsphere emulsion.
Preferably, the mass ratio of the chitosan powder to the acetic acid solution with the mass fraction of 1% is controlled to be 5-8: 80-90; the mass ratio of the methylisothiazolinone solution with the mass fraction of 10% to the sodium tripolyphosphate solution with the concentration of 2g/L is 40-60: 30-50.
Preferably, the preparation process of the thermal insulation material comprises the following steps:
the first step is as follows: mixing organic silicon montmorillonite and polyether triol, and grinding by using a three-roll machine to obtain a polyether triol intercalated montmorillonite compound;
the second step is that: adding toluene diisocyanate, polyether diol, polyether triol, hydroxypropyl-terminated silicone oil and dibutyltin dilaurate into a container, and stirring at 85 ℃ for reaction for 5 hours to obtain a prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane;
the third step: stirring and mixing the polyether triol intercalated montmorillonite composite, the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane and the polyether triol at the rotating speed of 1000r/min at room temperature, adding dimethyl-sulfur-based toluene diamine, mixing, pouring into a mold, defoaming in vacuum, and curing in an oven at the constant temperature of 70 ℃ for 10 hours to prepare the modified polyurethane;
the fourth step: adding the modified polyurethane into a solvent, and uniformly mixing to obtain the thermal insulation material, wherein the mass ratio of the modified polyurethane to the solvent is 10-20: 80-90.
Preferably, the mass ratio of the organic silicon montmorillonite to the polyether triol is controlled to be 40-50: 60-70; controlling the mass ratio of toluene diisocyanate, polyether diol, polyether triol, hydroxypropyl-terminated silicone oil and dibutyltin dilaurate to be 40-50:120-130: 16-18: 0.2-0.3; the mass ratio of the polyether triol intercalated montmorillonite composite to the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane to the polyether triol is 5-7:85-97: 6-8;
preferably, the preparation process of the antibacterial emulsion comprises the following steps:
the first step is as follows: mixing Ag with TiO2Mixing the powder with anhydrous ethanol, and ultrasonically oscillating for 30min to obtain Ag/TiO2An ethanol dispersion;
the second step is that: mixing Ag with TiO2Heating the ethanol dispersion liquid to 30-40 ℃, then dropwise adding an ethanol solution of vinyl triethoxysilane to obtain a reaction liquid c, adding ammonia water into the reaction liquid c, and mixing and stirring for 2-3h to obtain a mixed liquid d;
the third step: d, putting the mixed solution into a vacuum drying oven, drying for 12-15h at the temperature of 40-50 ℃, removing ethanol to obtain powder, and grinding the powder to obtain the modified Ag/TiO2The antibacterial agent is prepared by washing the modified Ag/TiO2 antibacterial agent with absolute ethyl alcohol, centrifuging, washing, and drying to obtain dried modified Ag/TiO2An antibacterial agent;
the fourth step: the obtained modified Ag/TiO2The antibacterial agent is dispersed in the fluorine silicone acrylic emulsion at high speed to obtain the modified Ag/TiO2An antibacterial emulsion.
Preferably, Ag/TiO is controlled2The mass ratio of the powder to the absolute ethyl alcohol is 3-5: 70-80; Ag/TiO22The mass ratio of the ethanol dispersion liquid to the ethanol solution of the vinyl triethoxysilane is 80-90: 26-29; the ethanol solution of the vinyl triethoxysilane is prepared by mixing 2ml of the vinyl triethoxysilane with 20ml of the ethanol solution; modified Ag/TiO2The mass ratio of the antibacterial agent to the fluorosilicone acrylic emulsion is 10-20: 100-120.
A preparation method of an antibacterial thermal bandage comprises the following steps:
the first step is as follows: selecting 100% of all cotton yarn as weft yarn, preparing the warp yarn from bare spandex yarn, skin color terylene low stretch yarn and white spandex as fabric base cloth, warping the fabric base cloth in a liquid flow dyeing machine by using high-temperature water at 90-98 ℃ and the warp yarn and the weft yarn of the fabric base cloth in the processing process to obtain elasticity, warping the warp yarn on a rack, threading, pressing a roller, replacing a weft density gear, feeding the bandage produced by starting into a sizing machine, setting the temperature to 160-200 ℃ and the rotating speed to 1000-1200r/min, and setting the elasticity to 300-500%;
the second step is that: soaking the base cloth in the heat-insulating material by adopting a double-roller coating method, and then feeding and rolling the base cloth attached with the heat-insulating material; and then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage.
Compared with the prior art, the invention has the beneficial effects that: chitosan is a chitin N-deacetylated product, the chitin, chitosan and cellulose have similar chemical structures, cellulose is hydroxyl at the C2 position, the chitin and chitosan are respectively replaced by an acetamido and an amino at the C2 position, the chitin and chitosan have a plurality of unique properties such as biodegradability, cell affinity and biological effect, especially the chitosan containing free amino is the only alkaline polysaccharide in natural polysaccharide; chitosan is used as a natural antibacterial material, has good antibacterial new performance, but has poor heat resistance, effective time and applicability, and methylisothiazolinone is added into the chitosan, so that the problems can be well overcome, the methylisothiazolinone has good bactericidal and antiseptic effects and good heat resistance, and has good effect of inhibiting the growth of microorganisms, so that the chitosan microsphere emulsion has two groups of antibacterial performance, and the bandage has good antibacterial property by attaching the chitosan microsphere emulsion to fabric base cloth;
the organic montmorillonite (OMMT) is a typical 2: 1 layered silicate, can be composited with polyurethane in a nano-scale manner, has strong acting force between the organic montmorillonite and the polyurethane, and polyurethane molecular chains inserted between montmorillonite layers can be blocked and limited by the montmorillonite layers, so that the heat resistance, the tensile strength and the elongation at break of the composite material can be improved; meanwhile, the organic silicon has low surface energy, high and low temperature resistance, weather resistance and hydrophobicity; thereby leading the thermal insulation material to be attached on the bandage and improving the thermal insulation performance and the elasticity of the bandage;
Ag/TiO2has the advantages of stability, no toxicity and no pollution, wherein, TiO2The Ti-O bond distance of (A) is short and not equally long, so that TiO2The stronger polarizability of the surface can easily cause the water adsorbed on the surface to be dissociated to form hydrophilic hydroxyl, and finally the Ag/TiO2Agglomerated in an organic medium and difficult to uniformly disperse in a polymer material, and the invention adopts the vinyltriethoxysilane to Ag/TiO2The surface is modified, thereby improving Ag/TiO2Dispersibility in organic polymers, unmodified Ag/TiO2Has an average particle diameter smaller than that of the modified Ag/TiO2The average grain diameter of the particles effectively avoids the agglomeration phenomenon; silicon hydroxyl and Ag/TiO formed after hydrolysis of vinyl triethoxysilane2The hydroxyl on the surface of the powder reacts to form Si-O-Ti bonds, so that the vinyl triethoxysilane is bonded to the Ag/TiO2Modifying the surface of the powder to modify Ag/TiO2The antibacterial agent has hydrophobicity; the antibacterial bandage is characterized in that a layer of antibacterial material is coated on the bandage, so that moisture and dirt can be effectively prevented from being enriched on the bandage, and mildew breeding is reduced, and a heavily-protected antibacterial layer is formed between the hydrophobic antibacterial coating and the chitosan microsphere emulsion.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An antibacterial thermal bandage comprises the following raw materials in parts by weight: 100 parts of fabric base cloth, 10 parts of chitosan microsphere emulsion, 15 parts of thermal insulation material and 14 parts of antibacterial emulsion; wherein the warm-keeping material is modified styrene-acrylic emulsion;
the preparation method of the antibacterial warm-keeping bandage comprises the following steps:
the first step is as follows: selecting 100% of all-cotton yarn as weft yarn, preparing the warp yarn from bare spandex yarn, skin color terylene low stretch yarn and natural white spandex as fabric base cloth, obtaining elasticity of the fabric base cloth in a liquid flow dyeing machine by utilizing high-temperature water at 90 ℃ and the fact that the warp yarn and the weft yarn of the fabric base cloth are in a loose state in the processing process, warping the warp yarn on a rack, threading again, pressing a roller, replacing a weft density gear, enabling a bandage produced by starting to enter a sizing machine, and setting the temperature to be 160 ℃, the rotating speed to be 1000r/min and the elasticity to be 300% after sizing;
the second step is that: soaking the base cloth in the heat-insulating material by adopting a double-roller coating method, and then feeding and rolling the base cloth attached with the heat-insulating material; and then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage.
The preparation process of the chitosan microsphere emulsion comprises the following steps:
the first step is as follows: mixing and dissolving chitosan powder and 1% by mass of acetic acid solution to obtain solution A, and controlling the pH value of the solution A to be 2 by using acetic acid; obtaining a chitosan solution;
the second step is that: mixing a methylisothiazolinone solution with the mass fraction of 10% with a sodium tripolyphosphate solution with the concentration of 2g/L to obtain a B solution;
the third step: and dropwise adding the chitosan solution into the solution B, and stirring and mixing at room temperature to obtain the chitosan microsphere emulsion.
Controlling the mass ratio of chitosan powder to 1% acetic acid solution to be 5: 80; the mass ratio of the methylisothiazolinone solution with the mass fraction of 10% to the sodium tripolyphosphate solution with the concentration of 2g/L is 40: 30.
The preparation process of the thermal insulation material comprises the following steps:
the first step is as follows: mixing organic silicon montmorillonite and polyether triol, and grinding by using a three-roll machine to obtain a polyether triol intercalated montmorillonite compound;
the second step is that: adding toluene diisocyanate, polyether diol, polyether triol, hydroxypropyl-terminated silicone oil and dibutyltin dilaurate into a container, and stirring at 85 ℃ for reaction for 5 hours to obtain a prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane;
the third step: stirring and mixing the polyether triol intercalated montmorillonite composite, the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane and the polyether triol at the rotating speed of 1000r/min at room temperature, adding dimethyl-sulfur-based toluene diamine, mixing, pouring into a mold, defoaming in vacuum, and curing in an oven at the constant temperature of 70 ℃ for 10 hours to prepare the modified polyurethane;
the fourth step: adding the modified polyurethane into a solvent, and uniformly mixing to obtain the thermal insulation material, wherein the mass ratio of the modified polyurethane to the solvent is 10: 80.
Controlling the mass ratio of the organic silicon montmorillonite to the polyether triol to be 40: 60; controlling the mass ratio of toluene diisocyanate to polyether diol to polyether triol to hydroxypropyl terminated silicone oil to dibutyltin dilaurate to be 40:120:120:16: 0.2; the mass ratio of the polyether triol intercalated montmorillonite composite to the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane to the polyether triol is 5:85: 6;
the preparation process of the antibacterial emulsion comprises the following steps:
the first step is as follows: mixing Ag with water/TiO2Mixing the powder with anhydrous ethanol, and ultrasonically oscillating for 30min to obtain Ag/TiO2An ethanol dispersion;
the second step is that: mixing Ag with TiO2Heating the ethanol dispersion liquid to 30 ℃, then dropwise adding an ethanol solution of vinyl triethoxysilane to obtain a reaction liquid c, adding ammonia water into the reaction liquid c, and mixing and stirring for 2 hours to obtain a mixed liquid d;
the third step: d, putting the mixed solution into a vacuum drying oven, drying for 12 hours at the temperature of 40 ℃, removing ethanol to obtain powder, and grinding the powder to obtain the modified Ag/TiO2The antibacterial agent is prepared by washing the modified Ag/TiO2 antibacterial agent with absolute ethyl alcohol, centrifuging, washing, and drying to obtain dried modified Ag/TiO2An antibacterial agent;
the fourth step: the obtained modified Ag/TiO2The antibacterial agent is dispersed in the fluorine silicone acrylic emulsion at high speed to obtain the modified Ag/TiO2An antibacterial emulsion.
Control of Ag/TiO2The mass ratio of the powder to the absolute ethyl alcohol is 3: 70; Ag/TiO22The mass ratio of the ethanol dispersion liquid to the ethanol solution of the vinyl triethoxysilane is 80: 26; the ethanol solution of the vinyl triethoxysilane is prepared by mixing 2ml of the vinyl triethoxysilane with 20ml of the ethanol solution; modified Ag/TiO2The mass ratio of the antibacterial agent to the fluorosilicone acrylic emulsion is 10: 100.
Example 2
An antibacterial thermal bandage comprises the following raw materials in parts by weight: 110 parts of fabric base cloth, 15 parts of chitosan microsphere emulsion, 17 parts of thermal insulation material and 15 parts of antibacterial emulsion; wherein the warm-keeping material is modified styrene-acrylic emulsion;
the preparation method of the antibacterial warm-keeping bandage comprises the following steps:
the first step is as follows: selecting 100% of all cotton yarn as weft yarn, making warp yarn from bare spandex yarn, skin color terylene low stretch yarn and natural white spandex as fabric base cloth, obtaining elasticity of the fabric base cloth in a liquid flow dyeing machine by utilizing 95 ℃ high-temperature water and the fact that warp yarn and weft yarn of the fabric base cloth are in a loose state in the processing process, warping the warp yarn on a rack, threading again, pressing a roller, replacing weft density gears, feeding a bandage produced by starting the machine into a sizing machine, wherein the temperature is 180 ℃, the rotating speed is 1100r/min, and the elasticity is 400% after sizing;
the second step is that: soaking the base cloth in the heat-insulating material by adopting a double-roller coating method, and then feeding and rolling the base cloth attached with the heat-insulating material; and then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage.
The preparation process of the chitosan microsphere emulsion comprises the following steps:
the first step is as follows: mixing chitosan powder with 1% acetic acid solution by mass percent for dissolving to obtain solution A, and controlling the pH value of the solution A to be 3 by using acetic acid; obtaining a chitosan solution;
the second step is that: mixing a methylisothiazolinone solution with the mass fraction of 10% with a sodium tripolyphosphate solution with the concentration of 2g/L to obtain a B solution;
the third step: and dropwise adding the chitosan solution into the solution B, and stirring and mixing at room temperature to obtain the chitosan microsphere emulsion.
Controlling the mass ratio of chitosan powder to 1% acetic acid solution to be 7:85 parts by weight; the mass ratio of the methylisothiazolinone solution with the mass fraction of 10% to the sodium tripolyphosphate solution with the concentration of 2g/L is 50: 40.
The preparation process of the thermal insulation material comprises the following steps:
the first step is as follows: mixing organic silicon montmorillonite and polyether triol, and grinding by using a three-roll machine to obtain a polyether triol intercalated montmorillonite compound;
the second step is that: adding toluene diisocyanate, polyether diol, polyether triol, hydroxypropyl-terminated silicone oil and dibutyltin dilaurate into a container, and stirring at 85 ℃ for reaction for 5 hours to obtain a prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane;
the third step: stirring and mixing the polyether triol intercalated montmorillonite composite, the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane and the polyether triol at the rotating speed of 1000r/min at room temperature, adding dimethyl-sulfur-based toluene diamine, mixing, pouring into a mold, defoaming in vacuum, and curing in an oven at the constant temperature of 70 ℃ for 10 hours to prepare the modified polyurethane;
the fourth step: adding the modified polyurethane into a solvent, and uniformly mixing to obtain the thermal insulation material, wherein the mass ratio of the modified polyurethane to the solvent is 15: 85.
Controlling the mass ratio of the organic silicon montmorillonite to the polyether triol to be 45: 65; controlling the mass ratio of toluene diisocyanate to polyether diol to polyether triol to hydroxypropyl terminated silicone oil to dibutyltin dilaurate to be 45:125:125:17: 0.3; the mass ratio of the polyether triol intercalated montmorillonite composite to the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane to the polyether triol is 6:90: 7;
the preparation process of the antibacterial emulsion comprises the following steps:
the first step is as follows: mixing Ag with TiO2Mixing the powder with anhydrous ethanol, and ultrasonically oscillating for 30min to obtain Ag/TiO2An ethanol dispersion;
the second step is that: mixing Ag with TiO2Heating the ethanol dispersion liquid to 35 ℃, then dropwise adding an ethanol solution of vinyl triethoxysilane to obtain a reaction liquid c, adding ammonia water into the reaction liquid c, and mixing and stirring for 2.5 hours to obtain a mixed liquid d;
the third step: d, putting the mixed solution into a vacuum drying oven, drying for 14 hours at the temperature of 45 ℃, removing ethanol to obtain powder, and grinding the powder to obtain the modified Ag/TiO2The antibacterial agent is prepared by washing the modified Ag/TiO2 antibacterial agent with absolute ethyl alcohol, centrifuging, washing, and drying to obtain dried modified Ag/TiO2An antibacterial agent;
the fourth step: the obtained modified Ag/TiO2The antibacterial agent is dispersed in the fluorine silicone acrylic emulsion at high speed to obtain the modified Ag/TiO2An antibacterial emulsion.
Control of Ag/TiO2The mass ratio of the powder to the absolute ethyl alcohol is 4: 75; Ag/TiO22The mass ratio of the ethanol dispersion liquid to the ethanol solution of the vinyl triethoxysilane is 85: 28; the ethanol solution of the vinyl triethoxysilane is prepared from 2ml of the vinyl triethoxysilane and 20ml of the ethanol solutionMixing to obtain the final product; modified Ag/TiO2The mass ratio of the antibacterial agent to the fluorosilicone acrylic emulsion is 15: 115.
Example 3
An antibacterial thermal bandage comprises the following raw materials in parts by weight: 120 parts of fabric base cloth, 20 parts of chitosan microsphere emulsion, 19 parts of a thermal insulation material and 17 parts of antibacterial emulsion; wherein the warm-keeping material is modified styrene-acrylic emulsion;
the preparation method of the antibacterial warm-keeping bandage comprises the following steps:
the first step is as follows: selecting 100% of all cotton yarn as weft yarn, making warp yarn from bare spandex yarn, skin color terylene low stretch yarn and natural white spandex as fabric base cloth, obtaining elasticity of the fabric base cloth in a liquid flow dyeing machine by utilizing high-temperature water at 90-98 ℃ and the fact that warp yarn and weft yarn of the fabric base cloth are in a loose state in the processing process, warping the warp yarn on a frame, threading again, pressing a roller, replacing weft density gears, enabling a bandage produced by starting to enter a sizing machine, and setting the elasticity to be 500% at the temperature of 200 ℃ and the rotating speed of 1200 r/min;
the second step is that: soaking the base cloth in the heat-insulating material by adopting a double-roller coating method, and then feeding and rolling the base cloth attached with the heat-insulating material; and then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage.
The preparation process of the chitosan microsphere emulsion comprises the following steps:
the first step is as follows: mixing and dissolving chitosan powder and 1% by mass of acetic acid solution to obtain solution A, and controlling the pH value of the solution A to be 4 by using acetic acid; obtaining a chitosan solution;
the second step is that: mixing a methylisothiazolinone solution with the mass fraction of 10% with a sodium tripolyphosphate solution with the concentration of 2g/L to obtain a B solution;
the third step: and dropwise adding the chitosan solution into the solution B, and stirring and mixing at room temperature to obtain the chitosan microsphere emulsion.
Controlling the mass ratio of chitosan powder to 1% acetic acid solution to be 8: 90, respectively; the mass ratio of the methylisothiazolinone solution with the mass fraction of 10% to the sodium tripolyphosphate solution with the concentration of 2g/L is 60: 50.
The preparation process of the thermal insulation material comprises the following steps:
the first step is as follows: mixing organic silicon montmorillonite and polyether triol, and grinding by using a three-roll machine to obtain a polyether triol intercalated montmorillonite compound;
the second step is that: adding toluene diisocyanate, polyether diol, polyether triol, hydroxypropyl-terminated silicone oil and dibutyltin dilaurate into a container, and stirring at 85 ℃ for reaction for 5 hours to obtain a prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane;
the third step: stirring and mixing the polyether triol intercalated montmorillonite compound, the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane and the polyether triol at the rotating speed of 1000r/min at room temperature, adding dimethyl-sulfur-based toluene diamine, mixing, pouring into a mold, defoaming in vacuum, and curing in an oven at the constant temperature of 70 ℃ for 10 hours to prepare the modified polyurethane;
the fourth step: adding the modified polyurethane into a solvent, and uniformly mixing to obtain the thermal insulation material, wherein the mass ratio of the modified polyurethane to the solvent is 20: 90.
Controlling the mass ratio of the organic silicon montmorillonite to the polyether triol to be 50: 70; controlling the mass ratio of toluene diisocyanate to polyether diol to polyether triol to hydroxypropyl terminated silicone oil to dibutyltin dilaurate to be 50:130:130:18: 0.3; the mass ratio of the polyether triol intercalated montmorillonite composite to the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane to the polyether triol is 7:97: 8;
the preparation process of the antibacterial emulsion comprises the following steps:
the first step is as follows: mixing Ag with TiO2Mixing the powder with anhydrous ethanol, and ultrasonically oscillating for 30min to obtain Ag/TiO2An ethanol dispersion;
the second step is that: mixing Ag with TiO2Heating the ethanol dispersion liquid to 40 ℃, then dropwise adding an ethanol solution of vinyltriethoxysilane to obtain a reaction liquid c, adding ammonia water into the reaction liquid c, mixing and stirringStirring for 3h to obtain a mixed solution d;
the third step: d, putting the mixed solution into a vacuum drying oven, drying for 15 hours at the temperature of 50 ℃, removing ethanol to obtain powder, and grinding the powder to obtain the modified Ag/TiO2The antibacterial agent is prepared by washing the modified Ag/TiO2 antibacterial agent with absolute ethyl alcohol, centrifuging, washing, and drying to obtain dried modified Ag/TiO2An antibacterial agent;
the fourth step: the obtained modified Ag/TiO2The antibacterial agent is dispersed in the fluorine silicone acrylic emulsion at high speed to obtain the modified Ag/TiO2An antibacterial emulsion.
Control of Ag/TiO2The mass ratio of the powder to the absolute ethyl alcohol is 5: 80; Ag/TiO22The mass ratio of the ethanol dispersion liquid to the ethanol solution of the vinyl triethoxysilane is 90: 29; the ethanol solution of the vinyl triethoxysilane is prepared by mixing 2ml of the vinyl triethoxysilane with 20ml of the ethanol solution; modified Ag/TiO2The mass ratio of the antibacterial agent to the fluorosilicone acrylic emulsion is 20: 120.
Comparative example 1
This comparative example is a common bandage on the market.
The samples obtained in each group of examples and comparative examples are tested for antibacterial performance and mechanical performance by taking escherichia coli and staphylococcus aureus as experimental strains,
TABLE 1
Figure BDA0002917685980000141
As shown in the table 1, the antibacterial thermal-insulation bandage prepared by the invention has good antibacterial performance, small heat conductivity coefficient and good thermal-insulation effect, and the tensile strength of the bandage is improved.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. An antibacterial thermal bandage is characterized in that: the feed comprises the following raw materials in parts by weight: 100-120 parts of fabric base cloth, 10-20 parts of chitosan microsphere emulsion, 15-19 parts of thermal insulation material and 14-17 parts of antibacterial emulsion; wherein the warm-keeping material is modified styrene-acrylic emulsion;
the preparation method of the antibacterial warm-keeping bandage comprises the following steps:
the first step is as follows: selecting 100% of all cotton yarn as weft yarn, preparing the warp yarn from bare spandex yarn, skin color terylene low stretch yarn and white spandex as fabric base cloth, warping the fabric base cloth in a liquid flow dyeing machine by using high-temperature water at 90-98 ℃ and the warp yarn and the weft yarn of the fabric base cloth in the processing process to obtain elasticity, warping the warp yarn on a rack, threading, pressing a roller, replacing a weft density gear, feeding the bandage produced by starting into a sizing machine, setting the temperature to 160-200 ℃ and the rotating speed to 1000-1200r/min, and setting the elasticity to 300-500%;
the second step is that: soaking the base cloth in the heat-insulating material by adopting a double-roller coating method, and then feeding and rolling the base cloth attached with the heat-insulating material; and then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage.
2. The antibacterial thermal bandage as claimed in claim 1, wherein the preparation process of the chitosan microsphere emulsion comprises the following steps:
the first step is as follows: mixing chitosan powder with 1% acetic acid solution by mass percent for dissolving to obtain solution A, and controlling the pH value of the solution A to be 2-4 by using acetic acid; obtaining a chitosan solution;
the second step is that: mixing a methylisothiazolinone solution with the mass fraction of 10% with a sodium tripolyphosphate solution with the concentration of 2g/L to obtain a B solution;
the third step: and dropwise adding the chitosan solution into the solution B, and stirring and mixing at room temperature to obtain the chitosan microsphere emulsion.
3. The antibacterial thermal bandage according to claim 2, wherein the mass ratio of chitosan powder to 1% by mass of acetic acid solution is controlled to be 5-8: 80-90; the mass ratio of the methylisothiazolinone solution with the mass fraction of 10% to the sodium tripolyphosphate solution with the concentration of 2g/L is 40-60: 30-50.
4. The antibacterial thermal bandage according to claim 1, wherein the preparation process of the thermal material comprises the following steps:
the first step is as follows: mixing organic silicon montmorillonite and polyether triol, and grinding by using a three-roll machine to obtain a polyether triol intercalated montmorillonite compound;
the second step is that: adding toluene diisocyanate, polyether diol, polyether triol, hydroxypropyl-terminated silicone oil and dibutyltin dilaurate into a container, and stirring at 85 ℃ for reaction for 5 hours to obtain a prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane;
the third step: stirring and mixing the polyether triol intercalated montmorillonite composite, the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane and the polyether triol at the rotating speed of 1000r/min at room temperature, adding dimethyl-sulfur-based toluene diamine, mixing, pouring into a mold, defoaming in vacuum, and curing in an oven at the constant temperature of 70 ℃ for 10 hours to prepare the modified polyurethane;
the fourth step: adding the modified polyurethane into a solvent, and uniformly mixing to obtain a thermal material, wherein the mass ratio of the modified polyurethane to the solvent is 10-20: 80-90; the solvent is one or more of ethanol and propanol.
5. The antibacterial thermal bandage according to claim 4, wherein the mass ratio of the organic silicon montmorillonite to the polyether triol is controlled to be 40-50: 60-70; controlling the mass ratio of toluene diisocyanate, polyether diol, polyether triol, hydroxypropyl-terminated silicone oil and dibutyltin dilaurate to be 40-50:120-130: 16-18: 0.2-0.3; the mass ratio of the polyether triol intercalated montmorillonite composite to the prepolymer of the hydroxypropyl-terminated silicone oil modified polyurethane to the polyether triol is 5-7:85-97: 6-8.
6. The antibacterial thermal bandage as claimed in claim 1, wherein the preparation process of the antibacterial emulsion comprises the following steps:
the first step is as follows: mixing Ag with TiO2Mixing the powder with anhydrous ethanol, and ultrasonically oscillating for 30min to obtain Ag/TiO2An ethanol dispersion;
the second step is that: mixing Ag with TiO2Heating the ethanol dispersion liquid to 30-40 ℃, then dropwise adding an ethanol solution of vinyl triethoxysilane to obtain a reaction liquid c, adding ammonia water into the reaction liquid c, and mixing and stirring for 2-3h to obtain a mixed liquid d;
the third step: d, putting the mixed solution into a vacuum drying oven, drying for 12-15h at the temperature of 40-50 ℃, removing ethanol to obtain powder, and grinding the powder to obtain the modified Ag/TiO2The antibacterial agent is prepared by washing the modified Ag/TiO2 antibacterial agent with absolute ethyl alcohol, centrifuging, washing, and drying to obtain dried modified Ag/TiO2An antibacterial agent;
the fourth step: the obtained modified Ag/TiO2The antibacterial agent is dispersed in the fluorine silicone acrylic emulsion at high speed to obtain the modified Ag/TiO2An antibacterial emulsion.
7. An antibacterial thermal bandage according to claim 6 characterised in that the Ag/TiO control is2The mass ratio of the powder to the absolute ethyl alcohol is 3-5: 70-80; Ag/TiO22The mass ratio of the ethanol dispersion liquid to the ethanol solution of the vinyl triethoxysilane is 80-90: 26-29; the ethanol solution of the vinyl triethoxysilane is prepared by mixing 2ml of the vinyl triethoxysilane with 20ml of the ethanol solution; modified Ag/TiO2The mass ratio of the antibacterial agent to the fluorosilicone acrylic emulsion is 10-20: 100-120.
8. The preparation method of the antibacterial thermal bandage is characterized by comprising the following steps:
the first step is as follows: selecting 100% of all cotton yarn as weft yarn, preparing the warp yarn from bare spandex yarn, skin color terylene low stretch yarn and white spandex as fabric base cloth, warping the fabric base cloth in a liquid flow dyeing machine by using high-temperature water at 90-98 ℃ and the warp yarn and the weft yarn of the fabric base cloth in the processing process to obtain elasticity, warping the warp yarn on a rack, threading, pressing a roller, replacing a weft density gear, feeding the bandage produced by starting into a sizing machine, setting the temperature to 160-200 ℃ and the rotating speed to 1000-1200r/min, and setting the elasticity to 300-500%;
the second step is that: soaking the base cloth in the heat-insulating material by adopting a double-roller coating method, and then feeding and rolling the base cloth attached with the heat-insulating material; and then soaking the base cloth in the chitosan microsphere emulsion, feeding and rolling the base cloth attached with the chitosan microsphere emulsion, finally coating the antibacterial solution on the surface of the base cloth, and feeding and rolling the base cloth attached with the thermal insulation material to obtain the antibacterial thermal insulation bandage.
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