CN112725930A - Fashionable environment-friendly cloth bag and preparation method thereof - Google Patents

Fashionable environment-friendly cloth bag and preparation method thereof Download PDF

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Publication number
CN112725930A
CN112725930A CN202011601845.8A CN202011601845A CN112725930A CN 112725930 A CN112725930 A CN 112725930A CN 202011601845 A CN202011601845 A CN 202011601845A CN 112725930 A CN112725930 A CN 112725930A
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China
Prior art keywords
solution
modified polyurethane
cloth bag
corrosion
resistant material
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CN202011601845.8A
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Chinese (zh)
Inventor
高翔宇
李飞
张晓磊
李小燕
杨天二
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Anhui Province Tianzhu Textile Science And Technology Group Co ltd
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Anhui Province Tianzhu Textile Science And Technology Group Co ltd
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Priority to CN202011601845.8A priority Critical patent/CN112725930A/en
Publication of CN112725930A publication Critical patent/CN112725930A/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C3/00—Flexible luggage; Handbags
    • A45C3/04—Shopping bags; Shopping nets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
    • C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
    • C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/61—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C08L75/08—Polyurethanes from polyethers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D01F1/103—Agents inhibiting growth of microorganisms
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4358—Polyurethanes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay

Abstract

The invention discloses a fashionable environment-friendly cloth bag and a preparation method thereof, wherein the fashionable environment-friendly cloth bag comprises 50 parts of modified polyurethane emulsion, 5 parts of antibacterial material, 5 parts of corrosion-resistant material and 2 parts of coupling agent; wherein: the antibacterial material is a chitosan and tea polyphenol composite material; preparing modified polyurethane emulsion, an antibacterial material and a corrosion-resistant material in sequence for later use; adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 40min, introducing carbon dioxide, boosting pressure, preserving heat and inoculating for 2-4h, recovering to normal pressure, heating to 260 ℃, and performing spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 50: 5: 5: 2; the invention has good high temperature resistance, corrosion resistance and antibacterial property.

Description

Fashionable environment-friendly cloth bag and preparation method thereof
Technical Field
The invention belongs to the technical field of cloth bags, and particularly relates to a fashionable environment-friendly cloth bag and a preparation method thereof.
Background
Common cloth bags can be classified into nylon bags, canvas bags, hemp bags, cotton bags, flannel bags, nonwoven bags and the like according to different materials.
A comparison document CN109868556A discloses a corrosion-resistant non-woven fabric bag and a preparation method thereof, relating to the technical field of non-woven fabric bag production. The non-woven fabric bag is prepared from the following raw materials in parts by weight: 22-26 parts of polyurethane, 16-20 parts of polymethacrylic acid, 14-18 parts of copper dialkyldithiocarbamate, 10-14 parts of tributyl phosphite, 6-10 parts of isooctyl acrylate, 13-17 parts of 3, 5-diethyltoluenediamine, 9-13 parts of 2, 4-diaminodiphenyl ether, 5-9 parts of alkyl vinyl ester, 2-4 parts of coupling agent, 2-4 parts of emulsifying agent and 1-3 parts of thickening agent. The invention overcomes the defects of the prior art, can effectively improve the corrosion resistance of the non-woven fabric bag, prevents the non-woven fabric bag from being mixed with various products to be corroded, thereby influencing the normal use of the non-woven fabric bag, can effectively reduce the viscosity of oil on the non-woven fabric bag, prevents serious oil stain, is convenient to clean, has good use effect and excellent performance of the non-woven fabric bag, and is suitable for pushing.
In the prior art, the cloth bag has the problems that the high temperature resistance, the corrosion resistance and the antibacterial performance are not excellent enough, and the using time of the cloth bag is influenced.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a cloth bag is not excellent in high-temperature resistance, corrosion resistance and antibacterial performance and the use duration of the cloth bag is influenced, and provides a fashionable environment-friendly cloth bag and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a fashionable environment-friendly cloth bag comprises 50-60 parts of modified polyurethane emulsion, 5-8 parts of an antibacterial material, 5-8 parts of a corrosion-resistant material and 2-4 parts of a coupling agent; wherein: the antibacterial material is a chitosan and tea polyphenol composite material;
the preparation method of the fashionable environment-friendly cloth bag comprises the following steps:
s1, preparing the modified polyurethane emulsion, the antibacterial material and the corrosion-resistant material in sequence for later use;
s2, adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 40-60min, introducing carbon dioxide, boosting pressure, preserving heat and inoculating for 2-4h, then recovering to normal pressure, heating to 260-300 ℃, and performing spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 50-60: 5-8: 5-8: 2-4;
s3, after opening, carding and combing, the non-woven fabric for the machine-made product is obtained through air flow conveying, air flow lapping, forming, finishing and shaping and rolling;
s4, feeding the upper and lower non-woven fabrics into a bag making machine, wherein the bag making machine is provided with a preheating device for preheating the side edges of the two non-woven fabrics, an ultrasonic sealing device is closely followed by the preheating device for sealing the side edges, and then preheating and ultrasonic sealing are carried out on the bottom sides of the two non-woven fabrics; the tail part of the bag making machine is provided with a cutting device, and the non-woven cloth bag sealed by the centering ultrasonic sealing device is cut into finished fashionable environment-friendly cloth bags in specification and is stacked in order.
Preferably, the coupling agent is one or more of vinyl tri (b-methoxyethoxy) silane, 3-aminopropyl triethoxysilane, isopropyl triisostearate.
Preferably, the preparation process of the modified polyurethane comprises the following steps:
adding polypropylene glycol and hydroxypropyl silicone oil into acetone, stirring for dissolving, heating to 58-60 ℃ to obtain solution A, dripping diphenylmethane diisocyanate into the solution A, reacting at the temperature of 58-60 ℃ for 2-3h to obtain solution B, adding dimethylolpropionic acid into the solution B, reacting at the temperature of 58-60 ℃ for 2-3h to obtain solution C, adding acetoxime into the solution C, reacting at the temperature of 58-60 ℃ for 2-3h to obtain solution D, cooling to room temperature, adding triethylamine into the solution D, mixing for 30-34min, placing in a rotary evaporator for rotary evaporation to obtain modified polyurethane;
the second step is that: and adding the obtained modified polyurethane, an emulsifier and deionized water into a high-shear emulsifier for emulsification for 30-40min to obtain the modified polyurethane emulsion.
Preferably, the mass ratio of polypropylene glycol, hydroxypropyl silicone oil, acetone, diphenylmethane diisocyanate, dimethylolpropionic acid, acetone oxime and triethylamine is controlled to be 25-30:6-8: 32-36: 15-17:2-3:5-6: 1-2; controlling the mass ratio of the modified polyurethane to the emulsifier to the deionized water to be 25-30:1-2: 80-82; wherein the emulsifier is one or more of cetyl trimethyl ammonium bromide and sodium dodecyl sulfate.
Preferably, the preparation process of the antibacterial material comprises the following steps:
the first step is as follows: mixing chitosan and 1% acetic acid solution by mass, stirring, adding tea polyphenol to obtain a mixed solution A, placing the mixed solution A into a shaking table, shaking for 16-18h at the temperature of 28-30 ℃ and the rotating speed of 60-65 ℃, and drying in a dryer to obtain a chitosan and tea polyphenol composite material; controlling the mass ratio of chitosan, acetic acid solution with mass fraction of 1% and tea polyphenol to be 6-8: 92-98: 5-7.
Preferably, the preparation process of the corrosion-resistant material comprises the following steps:
the first step is as follows: mixing the graphene water dispersion with a phosphoric acid solution with the concentration of 0.25-0.28mol/L to obtain a solution a, dropwise adding an aniline mixed solution into the solution a, stirring for 50-60min, and adding ammonium sulfate into the solution a to react for 16-18h to obtain a dispersion solution;
the second step is that: and adding a hydrochloric acid solution into the dispersion liquid to obtain a solution b, then carrying out centrifugal separation on the solution b, and cleaning the supernatant through distilled water until the pH value is neutral to obtain the graphene and polyaniline composite corrosion-resistant material.
Preferably, the mass ratio of the graphene aqueous dispersion to the phosphoric acid solution to the aniline solution to the ammonium sulfate to the hydrochloric acid is controlled to be 0.5-0.9: 55-60: 0.1-0.2:2-3: 10-20; the aniline solution is prepared from aniline and graphene water dispersion according to a mass ratio of 5: 10.
Preferably, the preparation process of the graphene aqueous dispersion comprises the following steps:
the first step is as follows: an electrolytic device which is composed of graphite foil as a working electrode, a stainless steel net as an electrode, 0.25 wt% of humic acid solution and 0.01mol/L of sodium hydroxide solution as electrolyte and controls the current to be 20mA/cm2And collecting the exfoliated graphite flakes, washing with water until filtrate is colorless, dispersing in 0.35 mass percent ammonia water, and performing ultrasonic treatment for 1 hour by using an ultrasonic wave dispersing instrument to obtain the graphene water dispersion liquid.
A preparation method of a fashionable environment-friendly cloth bag is characterized by comprising the following steps:
s1, preparing the modified polyurethane emulsion, the antibacterial material and the corrosion-resistant material in sequence for later use;
s2, adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 40-60min, introducing carbon dioxide, boosting pressure, preserving heat and inoculating for 2-4h, then recovering to normal pressure, heating to 260-300 ℃, and performing spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 50-60: 5-8: 5-8: 2-4;
s3, after opening, carding and combing, the non-woven fabric for the machine-made product is obtained through air flow conveying, air flow lapping, forming, finishing and shaping and rolling;
s4, feeding the upper and lower non-woven fabrics into a bag making machine, wherein the bag making machine is provided with a preheating device for preheating the side edges of the two non-woven fabrics, an ultrasonic sealing device is closely followed by the preheating device for sealing the side edges, and then preheating and ultrasonic sealing are carried out on the bottom sides of the two non-woven fabrics; the tail part of the bag making machine is provided with a cutting device, and the non-woven cloth bag sealed by the centering ultrasonic sealing device is cut into finished fashionable environment-friendly cloth bags in specification and is stacked in order.
Compared with the prior art, the invention has the beneficial effects that:
polyurethane is synthesized among polypropylene glycol, hydroxypropyl silicone oil and diphenylmethane diisocyanate, acetone oxime is used as a blocking agent of polyurethane with an end group of-NCO in the reaction, and the blocking agent reacts with isocyanate ester group to obtain modified polyurethane; the macromolecular synthetic material containing silicon element in the molecular structure of the cabinet takes C-C bond as a main chain structure, the organic silicon material takes Si-O bond as the main chain structure, and the bond energy of the Si-O bond is far higher than that of the C-C bond, so that the chemical bond of the organic silicon is not easy to break and decompose at high temperature, and the organic silicon has excellent high temperature resistance; then, the organopolysiloxane is introduced into the polyurethane chain segment, so that the modified polyurethane has the advantage of high temperature resistance; the fashionable environment-friendly cloth bag is prepared by taking the modified polyurethane as a raw material, so that the cloth bag has good high-temperature resistance;
the chitosan has good antibacterial property, but has the defects of weak antioxidant activity, small antibacterial range, low strength and high brittleness, and only can inhibit partial organisms; the tea polyphenol has strong oxidation resistance and corrosion resistance; the prepared chitosan and tea polyphenol composite material is effectively and uniformly mixed with the modified polyurethane, so that the modified polyurethane material has antibacterial and anticorrosive properties, the quality of products in the cloth bag can be effectively protected, the cloth bag is not easily interfered by bacteria, and the bacteria are easy to breed inside and outside the cloth bag;
the graphene has excellent physical shielding property, chemical stability and high specific surface area, so that the graphene has a good anticorrosion effect, is added into an organic matter as a filler, the anticorrosion period is long, the adhesive force and the mechanical property of a coating are increased, the compatibility between the graphene and the organic matter can be improved by performing functional treatment on the graphene, the dispersibility of the graphene is improved, and the anticorrosion performance of a cloth bag is improved; according to the method, hydrolyzed styrene-maleic anhydride copolymer functionalized graphene is used as a stabilizer, an in-situ polymerization method is used for preparing a graphene-polyaniline composite material, and the graphene-polyaniline/aqueous polyurethane corrosion-resistant protective layer is prepared by physically blending the graphene-polyaniline/aqueous polyurethane composite material with modified polyurethane.
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
A fashionable environment-friendly cloth bag and a preparation method thereof comprise 50 parts of modified polyurethane emulsion, 5 parts of antibacterial material, 5 parts of corrosion-resistant material and 2 parts of coupling agent; wherein: the antibacterial material is a chitosan and tea polyphenol composite material;
the preparation method of the fashionable environment-friendly cloth bag comprises the following steps:
s1, preparing the modified polyurethane emulsion, the antibacterial material and the corrosion-resistant material in sequence for later use;
s2, adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 40min, introducing carbon dioxide, boosting pressure, preserving heat and inoculating for 2-4h, then recovering to normal pressure, heating to 260 ℃, and then performing spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 50: 5: 5: 2;
s3, after opening, carding and combing, the non-woven fabric for the machine-made product is obtained through air flow conveying, air flow lapping, forming, finishing and shaping and rolling;
s4, feeding the upper and lower non-woven fabrics into a bag making machine, wherein the bag making machine is provided with a preheating device for preheating the side edges of the two non-woven fabrics, an ultrasonic sealing device is closely followed by the preheating device for sealing the side edges, and then preheating and ultrasonic sealing are carried out on the bottom sides of the two non-woven fabrics; the tail part of the bag making machine is provided with a cutting device, and the non-woven cloth bag sealed by the centering ultrasonic sealing device is cut into finished fashionable environment-friendly cloth bags in specification and is stacked in order.
The coupling agent is one or more of vinyl tri (b-methoxyethoxy) silane, 3-aminopropyl triethoxysilane and isopropyl triisostearate.
The preparation process of the modified polyurethane comprises the following steps:
adding polypropylene glycol and hydroxypropyl silicone oil into acetone, stirring and dissolving, heating to 58 ℃ to obtain solution A, dripping diphenylmethane diisocyanate into the solution A, reacting at 58 ℃ for 2 hours to obtain solution B, adding dimethylolpropionic acid into the solution B, reacting at 58 ℃ for 2 hours to obtain solution C, adding acetoxime into the solution C, reacting at 58 ℃ for 2 hours to obtain solution D, cooling to room temperature, adding triethylamine into the solution D, mixing for 30min, placing in a rotary evaporator, and performing rotary evaporation to obtain modified polyurethane; polyurethane is synthesized among polypropylene glycol, hydroxypropyl silicone oil and diphenylmethane diisocyanate, acetone oxime is used as a blocking agent of polyurethane with a terminal group of-NCO in the reaction, and the blocking agent reacts with isocyanate ester group to obtain modified polyurethane; the macromolecular synthetic material containing silicon element in the molecular structure of the cabinet takes C-C bond as a main chain structure, the organic silicon material takes Si-O bond as the main chain structure, and the bond energy of the Si-O bond is far higher than that of the C-C bond, so that the chemical bond of the organic silicon is not easy to break and decompose at high temperature, and the organic silicon has excellent high temperature resistance; then, the organopolysiloxane is introduced into the polyurethane chain segment, so that the modified polyurethane has the advantage of high temperature resistance; the fashionable environment-friendly cloth bag is prepared by taking the modified polyurethane as a raw material, so that the cloth bag has good high-temperature resistance;
the second step is that: and adding the obtained modified polyurethane, an emulsifier and deionized water into a high-shear emulsifier for emulsification for 30min to obtain the modified polyurethane emulsion.
Controlling the mass ratio of polypropylene glycol, hydroxypropyl silicone oil, acetone, diphenylmethane diisocyanate, dimethylolpropionic acid, acetone oxime and triethylamine to be 25:6: 32: 15:2:5: 1; controlling the mass ratio of the modified polyurethane to the emulsifier to the deionized water to be 25:1: 80; wherein the emulsifier is one or more of cetyl trimethyl ammonium bromide and sodium dodecyl sulfate.
The preparation process of the antibacterial material comprises the following steps:
the first step is as follows: mixing chitosan and 1% acetic acid solution by mass, stirring, adding tea polyphenol to obtain a mixed solution A, placing the mixed solution A into a shaking table, shaking for 16h at the temperature of 28 ℃ and the rotating speed of 60 ℃, and placing the mixed solution A into a dryer for drying to obtain a chitosan and tea polyphenol composite material; controlling the mass ratio of chitosan, acetic acid solution with mass fraction of 1% and tea polyphenol to be 6: 92: 5; the chitosan has good antibacterial property, but has the defects of weak antioxidant activity, small antibacterial range, low strength and high brittleness, and only can inhibit partial organisms; the tea polyphenol has strong oxidation resistance and corrosion resistance; the prepared chitosan and tea polyphenol composite material is effectively and uniformly mixed with the modified polyurethane, so that the modified polyurethane material has antibacterial and anticorrosive properties, the quality of products in the cloth bag and the cloth bag can be effectively protected, the bacteria are not easily interfered by the bacteria, the bacteria are easily bred inside and outside the cloth bag, and the problems that in the prior art, when shopping is carried out through the cloth bag and cleaning is not carried out frequently, fine residues of vegetables or fruits are left in the cloth bag, the residues can provide a good production environment for the bacteria, the service life of the cloth bag is influenced, and the health of the cloth bag in use is influenced are solved.
The preparation process of the corrosion-resistant material comprises the following steps:
the first step is as follows: mixing the graphene aqueous dispersion with a phosphoric acid solution with the concentration of 0.25mol/L to obtain a solution a, dropwise adding an aniline mixed solution into the solution a, stirring for 50min, and adding ammonium sulfate into the solution a to react for 16h to obtain a dispersion solution;
the second step is that: and adding a hydrochloric acid solution into the dispersion liquid to obtain a solution b, then carrying out centrifugal separation on the solution b, and cleaning the supernatant through distilled water until the pH value is neutral to obtain the graphene and polyaniline composite corrosion-resistant material.
Controlling the mass ratio of the graphene water dispersion liquid to the phosphoric acid solution to the aniline solution to the ammonium sulfate to the hydrochloric acid to be 0.5: 55: 0.1:2: 10; the aniline solution is prepared from aniline and graphene water dispersion according to a mass ratio of 5: 10.
The preparation process of the graphene aqueous dispersion comprises the following steps:
the first step is as follows: an electrolytic device which is composed of graphite foil as a working electrode, a stainless steel net as an electrode, 0.25 wt% of humic acid solution and 0.01mol/L of sodium hydroxide solution as electrolyte and controls the current to be 20mA/cm2And collecting the exfoliated graphite flakes, washing with water until filtrate is colorless, dispersing in 0.35 mass percent ammonia water, and performing ultrasonic treatment for 1 hour by using an ultrasonic wave dispersing instrument to obtain the graphene water dispersion liquid. The graphene has excellent physical shielding property, chemical stability and high specific surface area, so that the graphene has a good anticorrosion effect, is added into an organic matter as a filler, the anticorrosion period is long, the adhesive force and the mechanical property of a coating are increased, the compatibility between the graphene and the organic matter can be improved by performing functional treatment on the graphene, the dispersibility of the graphene is improved, and the anticorrosion performance of a cloth bag is improved; the method takes hydrolyzed styrene-maleic anhydride copolymer functionalized graphene as a stabilizer, and uses an in-situ polymerization method to prepare graphiteThe graphene-polyaniline composite material is physically blended with modified polyurethane to prepare the graphene-polyaniline/waterborne polyurethane corrosion-resistant protective layer.
Example 2
A fashionable environment-friendly cloth bag and a preparation method thereof comprise 55 parts of modified polyurethane emulsion, 6 parts of antibacterial material, 6 parts of corrosion-resistant material and 3 parts of coupling agent; wherein: the antibacterial material is a chitosan and tea polyphenol composite material;
the preparation method of the fashionable environment-friendly cloth bag comprises the following steps:
s1, preparing the modified polyurethane emulsion, the antibacterial material and the corrosion-resistant material in sequence for later use;
s2, adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 50min, introducing carbon dioxide, boosting pressure, carrying out heat preservation and inoculation for 3h, recovering to normal pressure, heating to 280 ℃, and carrying out spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 55: 6: 6: 3;
s3, after opening, carding and combing, the non-woven fabric for the machine-made product is obtained through air flow conveying, air flow lapping, forming, finishing and shaping and rolling;
s4, feeding the upper and lower non-woven fabrics into a bag making machine, wherein the bag making machine is provided with a preheating device for preheating the side edges of the two non-woven fabrics, an ultrasonic sealing device is closely followed by the preheating device for sealing the side edges, and then preheating and ultrasonic sealing are carried out on the bottom sides of the two non-woven fabrics; the tail part of the bag making machine is provided with a cutting device, and the non-woven cloth bag sealed by the centering ultrasonic sealing device is cut into finished fashionable environment-friendly cloth bags in specification and is stacked in order.
The coupling agent is one or more of vinyl tri (b-methoxyethoxy) silane, 3-aminopropyl triethoxysilane and isopropyl triisostearate.
The preparation process of the modified polyurethane comprises the following steps:
adding polypropylene glycol and hydroxypropyl silicone oil into acetone, stirring and dissolving, heating to 59 ℃ to obtain solution A, dripping diphenylmethane diisocyanate into the solution A, reacting at 59 ℃ for 3 hours to obtain solution B, adding dimethylolpropionic acid into the solution B, reacting at 29 ℃ for 3 hours to obtain solution C, adding acetone oxime into the solution C, reacting at 589 ℃ for 3 hours to obtain solution D, cooling to room temperature, adding triethylamine into the solution D, mixing for 32min, placing in a rotary evaporator, and performing rotary evaporation to obtain modified polyurethane;
the second step is that: and adding the obtained modified polyurethane, an emulsifier and deionized water into a high-shear emulsifier for emulsification for 35min to obtain the modified polyurethane emulsion.
Controlling the mass ratio of polypropylene glycol, hydroxypropyl silicone oil, acetone, diphenylmethane diisocyanate, dimethylolpropionic acid, acetone oxime and triethylamine to be 28:7: 34: 16:3:6: 2; controlling the mass ratio of the modified polyurethane to the emulsifier to the deionized water to be 28:2: 81; wherein the emulsifier is one or more of cetyl trimethyl ammonium bromide and sodium dodecyl sulfate.
The preparation process of the antibacterial material comprises the following steps:
the first step is as follows: mixing chitosan and 1% acetic acid solution by mass, stirring, adding tea polyphenol to obtain a mixed solution A, placing the mixed solution A into a shaking table, shaking for 17h at the temperature of 29 ℃ and the rotating speed of 63 ℃, and placing the mixed solution A into a dryer for drying to obtain a chitosan and tea polyphenol composite material; controlling the mass ratio of chitosan, acetic acid solution with mass fraction of 1% and tea polyphenol to be 7: 94: 6.
the preparation process of the corrosion-resistant material comprises the following steps:
the first step is as follows: mixing the graphene aqueous dispersion with a phosphoric acid solution with the concentration of 0.26mol/L to obtain a solution a, dropwise adding an aniline mixed solution into the solution a, stirring for 55min, and adding ammonium sulfate into the solution a to react for 17h to obtain a dispersion solution;
the second step is that: and adding a hydrochloric acid solution into the dispersion liquid to obtain a solution b, then carrying out centrifugal separation on the solution b, and cleaning the supernatant through distilled water until the pH value is neutral to obtain the graphene and polyaniline composite corrosion-resistant material.
Controlling the mass ratio of the graphene water dispersion liquid to the phosphoric acid solution to the aniline solution to the ammonium sulfate to the hydrochloric acid to be 0.8: 58: 0.2:3: 15; the aniline solution is prepared from aniline and graphene water dispersion according to a mass ratio of 5: 10.
The preparation process of the graphene aqueous dispersion comprises the following steps:
the first step is as follows: an electrolytic device which is composed of graphite foil as a working electrode, a stainless steel net as an electrode, 0.25 wt% of humic acid solution and 0.01mol/L of sodium hydroxide solution as electrolyte and controls the current to be 20mA/cm2And collecting the exfoliated graphite flakes, washing with water until filtrate is colorless, dispersing in 0.35 mass percent ammonia water, and performing ultrasonic treatment for 1 hour by using an ultrasonic wave dispersing instrument to obtain the graphene water dispersion liquid.
Example 3
A fashionable environment-friendly cloth bag and a preparation method thereof comprise 60 parts of modified polyurethane emulsion, 8 parts of antibacterial material, 8 parts of corrosion-resistant material and 4 parts of coupling agent; wherein: the antibacterial material is a chitosan and tea polyphenol composite material;
the preparation method of the fashionable environment-friendly cloth bag comprises the following steps:
s1, preparing the modified polyurethane emulsion, the antibacterial material and the corrosion-resistant material in sequence for later use;
s2, adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 60min, introducing carbon dioxide, boosting pressure, keeping the temperature for incubation for 4h, recovering to normal pressure, heating to 300 ℃, and performing spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 60: 8: 8: 4;
s3, after opening, carding and combing, the non-woven fabric for the machine-made product is obtained through air flow conveying, air flow lapping, forming, finishing and shaping and rolling;
s4, feeding the upper and lower non-woven fabrics into a bag making machine, wherein the bag making machine is provided with a preheating device for preheating the side edges of the two non-woven fabrics, an ultrasonic sealing device is closely followed by the preheating device for sealing the side edges, and then preheating and ultrasonic sealing are carried out on the bottom sides of the two non-woven fabrics; the tail part of the bag making machine is provided with a cutting device, and the non-woven cloth bag sealed by the centering ultrasonic sealing device is cut into finished fashionable environment-friendly cloth bags in specification and is stacked in order.
The coupling agent is one or more of vinyl tri (b-methoxyethoxy) silane, 3-aminopropyl triethoxysilane and isopropyl triisostearate.
The preparation process of the modified polyurethane comprises the following steps:
adding polypropylene glycol and hydroxypropyl silicone oil into acetone, stirring and dissolving, heating to 60 ℃ to obtain solution A, dripping diphenylmethane diisocyanate into the solution A, reacting at 60 ℃ for 3 hours to obtain solution B, adding dimethylolpropionic acid into the solution B, reacting at 60 ℃ for 3 hours to obtain solution C, adding acetone oxime into the solution C, reacting at 60 ℃ for 3 hours to obtain solution D, cooling to room temperature, adding triethylamine into the solution D, mixing for 34min, placing in a rotary evaporator, and performing rotary evaporation to obtain modified polyurethane; polyurethane is synthesized among polypropylene glycol, hydroxypropyl silicone oil and diphenylmethane diisocyanate, acetone oxime is used as a blocking agent of polyurethane with a terminal group of-NCO in the reaction, and the blocking agent reacts with isocyanate ester group to obtain modified polyurethane;
the second step is that: and adding the obtained modified polyurethane, an emulsifier and deionized water into a high-shear emulsifier for emulsification for 40min to obtain the modified polyurethane emulsion.
Controlling the mass ratio of polypropylene glycol, hydroxypropyl silicone oil, acetone, diphenylmethane diisocyanate, dimethylolpropionic acid, acetone oxime and triethylamine to be 30:8: 36: 17: 3:6: 2; controlling the mass ratio of the modified polyurethane to the emulsifier to the deionized water to be 25:2: 82; wherein the emulsifier is one or more of cetyl trimethyl ammonium bromide and sodium dodecyl sulfate.
The preparation process of the antibacterial material comprises the following steps:
the first step is as follows: mixing chitosan and 1% acetic acid solution by mass, stirring, adding tea polyphenol to obtain a mixed solution A, placing the mixed solution A into a shaking table, shaking for 18h at the temperature of 30 ℃ and the rotating speed of 65 ℃, and placing the mixed solution A into a dryer for drying to obtain a chitosan and tea polyphenol composite material; controlling the mass ratio of chitosan, acetic acid solution with mass fraction of 1% and tea polyphenol to be 8: 98: 7.
the preparation process of the corrosion-resistant material comprises the following steps:
the first step is as follows: mixing the graphene aqueous dispersion with a phosphoric acid solution with the concentration of 0.28mol/L to obtain a solution a, dropwise adding an aniline mixed solution into the solution a, stirring for 60min, and adding ammonium sulfate into the solution a to react for 18h to obtain a dispersion solution;
the second step is that: and adding a hydrochloric acid solution into the dispersion liquid to obtain a solution b, then carrying out centrifugal separation on the solution b, and cleaning the supernatant through distilled water until the pH value is neutral to obtain the graphene and polyaniline composite corrosion-resistant material.
Controlling the mass ratio of the graphene water dispersion liquid to the phosphoric acid solution to the aniline solution to the ammonium sulfate to the hydrochloric acid to be 0.9: 60: 0.2:3: 20; the aniline solution is prepared from aniline and graphene water dispersion according to a mass ratio of 5: 10.
The preparation process of the graphene aqueous dispersion comprises the following steps:
the first step is as follows: an electrolytic device which is composed of graphite foil as a working electrode, a stainless steel net as an electrode, 0.25 wt% of humic acid solution and 0.01mol/L of sodium hydroxide solution as electrolyte and controls the current to be 20mA/cm2And collecting the exfoliated graphite flakes, washing with water until filtrate is colorless, dispersing in 0.35 mass percent ammonia water, and performing ultrasonic treatment for 1 hour by using an ultrasonic wave dispersing instrument to obtain the graphene water dispersion liquid.
Comparative example 1
The comparative example is a common cloth bag in the market.
The samples obtained from the respective groups of examples and comparative examples were tested for antibacterial properties.
Figure BDA0002871691960000141
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 (9)

1. A fashion environment-friendly sack which is characterized in that: comprises 50-60 parts of modified polyurethane emulsion, 5-8 parts of antibacterial material, 5-8 parts of corrosion-resistant material and 2-4 parts of coupling agent; wherein: the antibacterial material is a chitosan and tea polyphenol composite material;
the preparation method of the fashionable environment-friendly cloth bag comprises the following steps:
s1, preparing the modified polyurethane emulsion, the antibacterial material and the corrosion-resistant material in sequence for later use;
s2, adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 40-60min, introducing carbon dioxide, boosting pressure, preserving heat and inoculating for 2-4h, then recovering to normal pressure, heating to 260-300 ℃, and performing spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 50-60: 5-8: 5-8: 2-4;
s3, after opening, carding and combing, the non-woven fabric for the machine-made product is obtained through air flow conveying, air flow lapping, forming, finishing and shaping and rolling;
s4, feeding the upper and lower non-woven fabrics into a bag making machine, wherein the bag making machine is provided with a preheating device for preheating the side edges of the two non-woven fabrics, an ultrasonic sealing device is closely followed by the preheating device for sealing the side edges, and then preheating and ultrasonic sealing are carried out on the bottom sides of the two non-woven fabrics; the tail part of the bag making machine is provided with a cutting device, and the non-woven cloth bag sealed by the centering ultrasonic sealing device is cut into finished fashionable environment-friendly cloth bags in specification and is stacked in order.
2. The fashion environment-friendly cloth bag according to claim 1, wherein the coupling agent is one or more of vinyltris (b-methoxyethoxy) silane, 3-aminopropyltriethoxysilane, isopropyl triisostearate.
3. The fashion environment-friendly cloth bag according to claim 1, wherein the preparation process of the modified polyurethane comprises the following steps:
adding polypropylene glycol and hydroxypropyl silicone oil into acetone, stirring for dissolving, heating to 58-60 ℃ to obtain solution A, dripping diphenylmethane diisocyanate into the solution A, reacting at the temperature of 58-60 ℃ for 2-3h to obtain solution B, adding dimethylolpropionic acid into the solution B, reacting at the temperature of 58-60 ℃ for 2-3h to obtain solution C, adding acetoxime into the solution C, reacting at the temperature of 58-60 ℃ for 2-3h to obtain solution D, cooling to room temperature, adding triethylamine into the solution D, mixing for 30-34min, placing in a rotary evaporator for rotary evaporation to obtain modified polyurethane;
the second step is that: and adding the obtained modified polyurethane, an emulsifier and deionized water into a high-shear emulsifier for emulsification for 30-40min to obtain the modified polyurethane emulsion.
4. The fashion environment-friendly cloth bag according to claim 3, wherein the mass ratio of polypropylene glycol, hydroxypropyl silicone oil, acetone, diphenylmethane diisocyanate, dimethylolpropionic acid, acetoxime and triethylamine is controlled to be 25-30:6-8: 32-36: 15-17:2-3:5-6: 1-2; controlling the mass ratio of the modified polyurethane to the emulsifier to the deionized water to be 25-30:1-2: 80-82; wherein the emulsifier is one or more of cetyl trimethyl ammonium bromide and sodium dodecyl sulfate.
5. The fashion environment-friendly cloth bag according to claim 1, wherein the preparation process of the antibacterial material comprises the following steps:
the first step is as follows: mixing chitosan and 1% acetic acid solution by mass, stirring, adding tea polyphenol to obtain a mixed solution A, placing the mixed solution A into a shaking table, shaking for 16-18h at the temperature of 28-30 ℃ and the rotating speed of 60-65 ℃, and drying in a dryer to obtain a chitosan and tea polyphenol composite material; controlling the mass ratio of chitosan, acetic acid solution with mass fraction of 1% and tea polyphenol to be 6-8: 92-98: 5-7.
6. The fashion environment-friendly cloth bag according to claim 1, wherein the preparation process of the corrosion-resistant material comprises the following steps:
the first step is as follows: mixing the graphene water dispersion with a phosphoric acid solution with the concentration of 0.25-0.28mol/L to obtain a solution a, dropwise adding an aniline mixed solution into the solution a, stirring for 50-60min, and adding ammonium sulfate into the solution a to react for 16-18h to obtain a dispersion solution;
the second step is that: and adding a hydrochloric acid solution into the dispersion liquid to obtain a solution b, then carrying out centrifugal separation on the solution b, and cleaning the supernatant through distilled water until the pH value is neutral to obtain the graphene and polyaniline composite corrosion-resistant material.
7. The fashion environment-friendly cloth bag according to claim 6, wherein the mass ratio of the graphene water dispersion, the phosphoric acid solution, the aniline solution, the ammonium sulfate and the hydrochloric acid is controlled to be 0.5-0.9: 55-60: 0.1-0.2:2-3: 10-20; the aniline solution is prepared from aniline and graphene water dispersion according to a mass ratio of 5: 10.
8. The fashion environment-friendly cloth bag according to claim 6, wherein the preparation process of the graphene water dispersion comprises the following steps:
the first step is as follows: an electrolytic device which is composed of graphite foil as a working electrode, a stainless steel net as an electrode, 0.25 wt% of humic acid solution and 0.01mol/L of sodium hydroxide solution as electrolyte and controls the current to be 20mA/cm2And collecting the exfoliated graphite flakes, washing with water until filtrate is colorless, dispersing in 0.35 mass percent ammonia water, and performing ultrasonic treatment for 1 hour by using an ultrasonic wave dispersing instrument to obtain the graphene water dispersion liquid.
9. A method of making a fashion environmental friendly cloth bag according to any one of claims 1 to 8, comprising the steps of:
s1, preparing the modified polyurethane emulsion, the antibacterial material and the corrosion-resistant material in sequence for later use;
s2, adding the prepared modified polyurethane emulsion, antibacterial material and corrosion-resistant material into an internal mixer for mixing, adding a coupling agent, stirring and mixing for 40-60min, introducing carbon dioxide, boosting pressure, preserving heat and inoculating for 2-4h, then recovering to normal pressure, heating to 260-300 ℃, and performing spinning to obtain cloth bag fibers for later use; controlling the mass ratio of the modified polyurethane to the antibacterial material to the corrosion-resistant material to the coupling agent to be 50-60: 5-8: 5-8: 2-4;
s3, after opening, carding and combing, the non-woven fabric for the machine-made product is obtained through air flow conveying, air flow lapping, forming, finishing and shaping and rolling;
s4, feeding the upper and lower non-woven fabrics into a bag making machine, wherein the bag making machine is provided with a preheating device for preheating the side edges of the two non-woven fabrics, an ultrasonic sealing device is closely followed by the preheating device for sealing the side edges, and then preheating and ultrasonic sealing are carried out on the bottom sides of the two non-woven fabrics; the tail part of the bag making machine is provided with a cutting device, and the non-woven cloth bag sealed by the centering ultrasonic sealing device is cut into finished fashionable environment-friendly cloth bags in specification and is stacked in order.
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