CN108686256B - Silver-carrying bacteriostatic sanitary towel and preparation method thereof - Google Patents
Silver-carrying bacteriostatic sanitary towel and preparation method thereof Download PDFInfo
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- CN108686256B CN108686256B CN201810524914.6A CN201810524914A CN108686256B CN 108686256 B CN108686256 B CN 108686256B CN 201810524914 A CN201810524914 A CN 201810524914A CN 108686256 B CN108686256 B CN 108686256B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/32—Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
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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
- 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
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- A—HUMAN NECESSITIES
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
- A61L2300/104—Silver, e.g. silver sulfadiazine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/12—Nanosized materials, e.g. nanofibres, nanoparticles, nanowires, nanotubes; Nanostructured surfaces
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Abstract
The invention discloses a silver-loaded bacteriostatic sanitary towel and a preparation method thereof, wherein the silver-loaded bacteriostatic sanitary towel consists of a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, the sanitary towel main body sequentially consists of a cotton soft layer, a bacteriostatic layer, a high-molecular water-absorbing resin layer, a bottom layer, release paper and a coating, and the bacteriostatic layer is prepared from silver-loaded antibacterial fibers. The silver-loaded bacteriostatic sanitary towel has no toxic or side effect, can kill and inhibit pathogenic microorganisms, permanently inhibit bacterial breeding, radically prevent bacteria from entering vagina, protect female health, and is safe and non-irritant to skin.
Description
Technical Field
The invention relates to the technical field of disposable sanitary products, in particular to a silver-loaded bacteriostatic sanitary towel and a preparation method thereof.
Background
During the menstrual period, the resistance of the reproductive organs of women is reduced, and the women are more fragile than usual and are easy to infect. In addition, the menstrual blood contains rich nutrient substances, bacteria can multiply and grow in a short time, if the sanitary towel is used for a long time, pruritus symptoms can be caused by mass propagation of the bacteria, and genital diseases can be caused in serious cases. The appearance of the sanitary towel brings convenience to vast women, but due to the fact that the production procedures of manufacturers are not standard, raw materials are incomplete in disinfection and sterilization measures, a factory is simple and crude, and the process is simplified, the sanitary towel is a bacterium-carrying object, infection opportunities of users are increased, numerous women suffer from infectious diseases, even other serious infectious diseases, cross infection is caused, the physical and mental health of the vast women and the spouses of the vast women are seriously threatened, even irreversible results are left, and if serious infection occurs, symptoms such as infertility can be caused.
Aiming at the problems in the prior art, the invention optimizes and improves the antibacterial component in the sanitary towel, and aims to obtain the antibacterial sanitary towel with high-efficiency and long-lasting antibacterial performance.
The invention patent of application number 201210549792.9 discloses a sanitary towel with magnetic bacteriostatic health-care function, which is prepared by compounding various raw materials into dispersion, then uniformly adding the dispersion into raw materials for producing non-woven fabrics, then producing the non-woven fabrics according to the normal production procedures of the non-woven fabrics, magnetizing the produced non-woven fabrics by a magnetizer, finally rewinding the magnetized non-woven fabrics into a proper diameter, cutting into proper widths to obtain sanitary towel chips with magnetic bacteriostatic health-care function, and then applying the sanitary towel chips into the sanitary towel to obtain the sanitary towel with magnetic bacteriostatic health-care function. But the sanitary towel with the magnetic bacteriostatic health-care function has the characteristics that the quality of the product is unstable, the magnetism is easy to disappear and the like in the production process.
Disclosure of Invention
The purpose of the invention is realized by the following technical scheme:
the invention aims to solve the technical problem of providing a silver-loaded bacteriostatic sanitary towel.
The invention discloses a silver-loaded bacteriostatic sanitary towel which comprises a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, wherein the sanitary towel main body sequentially comprises a cotton soft layer, a bacteriostatic layer, a high-molecular water-absorbing resin layer, a bottom layer, release paper and a coating, and the bacteriostatic layer is prepared from silver-loaded antibacterial fibers.
The polymer water-absorbent resin layer can be prepared by using a polymer water-absorbent resin provided by Jinan Huadi God & Mao Co., Ltd and named as "synthesis of polymer water-absorbent resin for physiological health" under the reference of application No. 201210579908.3.
The process of weaving the silver-loaded antibacterial fiber into the antibacterial layer can be carried out by referring to the invention patent with the patent application number of 201510291215.8, which is not the innovation of the invention.
The silver-loaded antibacterial fiber is prepared from materials with excellent water absorption performance, a network space structure is generated by gelatin containing abundant hydrophilic groups such as hydroxyl groups, amino groups and the like in a molecular chain and polyvinyl alcohol containing a large number of hydroxyl groups through a cross-linking effect, the surface is compact and uniform, the silver-loaded antibacterial fiber has better water absorption and air permeability, and meanwhile, nano silver particles are uniformly attached to the surface of the fiber.
The preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 30-40%; dissolving polyvinyl alcohol in 60-70% of dimethyl sulfoxide water solution to obtain 12-15% of solution B of polyvinyl alcohol; mixing the silver-loaded antibacterial agent and absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25-30%; mixing the solution A and the solution B in a mass ratio of 1: (0.6-0.8), stirring at the rotating speed of 300-500 r/min for 20-30 min, then adding the dispersion liquid C with the mass of 0.2-0.3 time of that of the solution A, and uniformly mixing to obtain a spinning solution; and (3) carrying out electrostatic spinning on the spinning solution under the conditions of a receiving distance of 13-15cm, a spinning voltage of 20-30KV and a flow rate of 0.5-0.7mL/h to obtain the silver-loaded antibacterial fiber.
The silver-loaded antibacterial agent is one or a mixture of more of nano silver, a silver-silicon dioxide composite material and a silver-kaolinite composite material.
In some technical schemes of the present invention, the preparation process of the nano silver is as follows: mixing silver nitrate water solution with the molar concentration of 0.8-1mol/L, polyvinylpyrrolidone and ethylene glycol in a ratio of 9: 11: 2(mg/mg/mL) is placed in a reaction vessel and stirred for 20-30 minutes at the rotating speed of 300-500 r/min to obtain a mixed solution; heating the mixed solution for reaction for 2-4 minutes under the microwave power of 300-400W; after the reaction is finished, taking out the reaction liquid, cooling to 23-25 ℃, centrifuging for 20-30 minutes at the rotating speed of 4000-; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: (80-100): 60(g/mL/mL/mL), and drying for 30-40 hours at 25-30 ℃ and under the vacuum degree of 0.07-0.08MPa to obtain the nano silver.
In some technical schemes of the present invention, the preparation process of the nano silver is as follows: mixing silver nitrate water solution with the molar concentration of 0.8-1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: (0.1-0.6) (mg/mg/mL/mg) in a reaction vessel, and stirring at a rotation speed of 300-500 rpm for 20-30 minutes to obtain a mixed solution; heating the mixed solution for reaction for 2-4 minutes under the microwave power of 300-400W; after the reaction is finished, taking out the reaction liquid, cooling to 23-25 ℃, centrifuging for 20-30 minutes at the rotating speed of 4000-; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: (80-100): 60(g/mL/mL/mL), and drying for 30-40 hours at 25-30 ℃ and under the vacuum degree of 0.07-0.08MPa to obtain the nano silver.
In the invention, experiments show that the bacteriostatic effect of the nano-silver obtained by adding sodium chloride is different from that obtained by not adding sodium chloride, which is probably because the sodium chloride is dissolved in the solution to generate chloride ions, and the chloride ions can be combined with silver ions in the reaction process, which can affect the appearance of the nano-silver. And when different amounts of sodium chloride are added, nano silver with different shapes can be generated. The quantity of silver ions released by the nano silver with different shapes is different in the sterilization process.
As an improved technical scheme of the invention, the silver-loaded antibacterial agent is a silver-silicon dioxide composite material, and the preparation process of the silver-silicon dioxide composite material comprises the following steps:
(1) drying the silicon dioxide at the temperature of 100-120 ℃ for 1-2 hours; and (3) mixing the dried silicon dioxide and absolute ethyl alcohol in a solid-to-liquid ratio of 1: (300-500) (g/mL) is stirred for 20-30 minutes at the rotating speed of 180-260 revolutions/minute; then adding distilled water 2-3 times of the weight of the silicon dioxide and sodium hydroxide 0.1-0.2 time of the weight of the silicon dioxide, and continuing stirring at the rotating speed of 180-260 r/min for 22-26 hours to obtain a reaction solution I;
(2) mixing silver nitrate water solution with the molar concentration of 0.8-1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: (0.1-0.6) (mg/mg/mL/mg) in a reaction vessel, and stirring at a rotation speed of 300-500 rpm for 20-30 minutes to obtain a mixed solution; heating the mixed solution for reaction for 2-4 minutes under the microwave power of 300-400W; after the reaction is finished, taking out the reaction liquid, and cooling to 23-25 ℃ to obtain a reaction liquid II;
(3) adding a reaction liquid II into the reaction liquid I, wherein the volume ratio of the reaction liquid I to the reaction liquid II is (5-6): 1, stirring at the rotating speed of 180-; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: (80-100): 60(g/mL/mL/mL), and drying for 30-40 hours at the temperature of 25-30 ℃ and the vacuum degree of 0.07-0.08MPa to obtain the silver-silicon dioxide composite material.
As an improved technical scheme of the invention, the silver-loaded antibacterial agent is a silver-kaolinite composite material, and the preparation process of the silver-kaolinite composite material comprises the following steps:
(1) removing impurities from the kaolinite, grinding, sieving with a 200-mesh sieve and a 300-mesh sieve, and calcining at the temperature of 500-800 ℃ for 2-3 hours to obtain kaolinite powder;
(2) mixing silver nitrate water solution with the molar concentration of 0.8-1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: (0.1-0.6) (mg/mg/mL/mg) in a reaction vessel, and stirring at a rotation speed of 300-500 rpm for 20-30 minutes to obtain a mixed solution; heating the mixed solution for reaction for 2-4 minutes under the microwave power of 300-400W; after the reaction is finished, taking out the reaction liquid, and cooling to 23-25 ℃ to obtain the reaction liquid;
(3) adding kaolinite powder into the reaction liquid obtained in the step (2), then adding phosphoric acid which is 0.08-0.1 time of the weight of the kaolinite powder, stirring for 30-50 minutes at the rotating speed of 200-; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: (80-100): 60(g/mL/mL/mL), and drying for 30-40 hours at the temperature of 25-30 ℃ and the vacuum degree of 0.07-0.08MPa to obtain the silver-kaolinite composite material.
Preferably, the ratio of the silver nitrate aqueous solution, polyvinylpyrrolidone, ethylene glycol and sodium chloride is 9: 11: 2: 0.1 (mg/mg/mL/mg).
Preferably, the silver-loaded antibacterial agent is a mixture of a silver-silica composite material and a silver-kaolinite composite material, wherein the mass ratio of the silver-silica composite material to the silver-kaolinite composite material is (2.6-3.1): 1.
the second technical problem to be solved by the invention is to provide a preparation method of the silver-loaded bacteriostatic sanitary towel.
The preparation method of the silver-loaded bacteriostatic sanitary towel comprises the following steps: cutting the cotton soft layer, the antibacterial layer, the high-molecular water-absorbing resin layer, the bottom layer, the release paper and the coating according to the size, sequentially bonding the cut cotton soft layer, the antibacterial layer, the high-molecular water-absorbing resin layer, the bottom layer, the release paper and the coating to form a sanitary towel main body, and then bonding the protective wings on two sides of the sanitary towel main body to obtain the silver-loaded antibacterial sanitary towel.
The silver-loaded bacteriostatic sanitary towel has no toxic or side effect, can kill and inhibit pathogenic microorganisms, permanently inhibit bacterial breeding, radically prevent bacteria from entering vagina, protect female health, and is safe and non-irritant to skin.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.
In the embodiment described below, it is preferred that,
bamboo fiber, available from Lifei textiles, Suzhou, having an average linear density of 7.33 dtex.
Gelatin, CAS No.: 9000-70-8, available from Ranei Scutellaria of Nanjing Peng.
Polyvinyl alcohol, CAS No.: 9002-89-5, available from Shanghai Michelin Biochemical technology, Inc.
Absolute ethanol, CAS No.: 64-17-5, available from Shanghai Ringsu Biochemical technology, Inc.
Silver nitrate aqueous solution with a molar concentration of 1mol/L, purchased from Eisen chemical Co., Ltd.
Polyvinylpyrrolidone, CAS No.: 9003-39-8, available from Hefeijian chemical Co.
Ethylene glycol, CAS No.: 107-21-1, available from Kyoto, chemical and technology Co., Ltd.
Sodium chloride, CAS No.: 7647-14-5, available from Yonghua chemical technology, Inc.
Silica, CAS No.: 112945-52-5, available from Shanghai province, Wuhanyi Tech technologies, Inc.
Kaolin, purchased from Guishou county brocade platinum ore processing plant, 1250 mesh.
Phosphoric acid, CAS No.: 7664-38-2, from Wuhan eosin science and technology Limited, 85% by weight.
Example 1
Bacteriostatic sanitary towel comprises sanitary towel main part and the flap that is located sanitary towel main part both sides, the sanitary towel main part comprises cotton soft layer, antibacterial layer, polymer resin layer that absorbs water, bottom, release paper and diolame in proper order, antibacterial layer is formed by bamboo fibril preparation according to conventional technology.
The process of weaving bamboo fiber into antibacterial layer can be carried out by referring to patent application No. 201510291215.8, which is not the innovation of the present invention.
The preparation method of the bacteriostatic sanitary towel comprises the following steps: the cotton soft layer (made of pure cotton non-woven cloth with the product number of 585-2) A bacteriostatic layer, a polymeric water-absorbent resin layer (prepared according to the patent of 'synthesis of a polymeric water-absorbent resin for physiological hygiene' with reference to application No. 201210579908.3), and a base layer (made of PE film, available from Wobbe dust-free materials of Suzhou, having a grammage of 40g/m2) Release paper (white glassine release paper available from Tianjin Yixuan International trade Co., Ltd., gram weight 90 g/m)20.04mm in thickness) and a coating film (made of low density polyethylene, MODEL MODEL XP 39385 from Ethyl corporation, 0.025mm in thickness) by cutting, sequentially bonding to obtain a sanitary napkin main body, and bonding the wingsAnd sticking the silver-loaded antibacterial sanitary towel on two sides of the sanitary towel main body to obtain the silver-loaded antibacterial sanitary towel.
The water absorption performance of example 1 is tested with reference to GB/T8939 & 2008 & sanitary napkins (including panty liners), and the water absorption rate of example 1 is 26.1 and the infiltration amount is 3.1 g.
Example 2
Silver-carrying bacteriostatic sanitary napkin comprises sanitary napkin main body and the wings that are located sanitary napkin main body both sides, the sanitary napkin main body comprises cotton soft layer, antibacterial layer, polymer water-absorbing resin layer, bottom, release paper and diolame in proper order, the antibacterial layer is formed by silver-carrying antibacterial fiber preparation.
The process of weaving the silver-loaded antibacterial fiber into the antibacterial layer can be carried out by referring to the invention patent with the patent application number of 201510291215.8, which is not the innovation of the invention.
The preparation method of the silver-loaded bacteriostatic sanitary towel comprises the following steps: the cotton soft layer (made of pure cotton non-woven cloth with the product number of 585-2) A bacteriostatic layer, a polymeric water-absorbent resin layer (prepared according to the patent of 'synthesis of a polymeric water-absorbent resin for physiological hygiene' with reference to application No. 201210579908.3), and a base layer (made of PE film, available from Wobbe dust-free materials of Suzhou, having a grammage of 40g/m2) Release paper (white glassine release paper available from Tianjin Yixuan International trade Co., Ltd., gram weight 90 g/m)20.04mm in thickness) and a coating film (made of low density polyethylene, purchased from Ethyl corporation, MODEL MODEL XP 39385, 0.025mm in thickness) are cut according to the size and then are sequentially bonded together to form a sanitary napkin main body, and then the wings are bonded on the two sides of the sanitary napkin main body to obtain the silver-loaded antibacterial sanitary napkin.
The preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 38%; dissolving polyvinyl alcohol in a dimethyl sulfoxide water solution with the mass fraction of 60% to obtain a solution B with the mass fraction of 14% of polyvinyl alcohol; mixing the silver-loaded antibacterial agent with absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25%; mixing the solution A and the solution B in a mass ratio of 1: 0.6, stirring for 20 minutes at the rotating speed of 400 r/min, then adding the dispersion liquid C with the mass of 0.2 time of that of the solution A, and uniformly mixing to obtain a spinning solution; and (3) carrying out electrostatic spinning on the spinning solution under the conditions of receiving distance of 14cm, spinning voltage of 28KV and flow rate of 0.6mL/h to obtain the silver-loaded antibacterial fiber.
The preparation process of the silver-loaded antibacterial agent comprises the following steps: mixing silver nitrate water solution with the molar concentration of 1mol/L, polyvinylpyrrolidone and ethylene glycol in a ratio of 9: 11: 2(mg/mg/mL) is placed in a reaction container and stirred for 20 minutes at the rotating speed of 400 revolutions per minute to obtain a mixed solution; heating the mixed solution under the microwave power of 300W for reaction for 3.5 minutes; after the reaction is finished, taking out the reaction solution, cooling to 23 ℃, centrifuging for 20 minutes at the rotating speed of 4000 revolutions per minute, and collecting bottom sediment; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: 80: 60(g/mL/mL/mL), and drying the mixture at 25 ℃ and a vacuum degree of 0.07MPa for 40 hours to obtain the silver-loaded antibacterial agent. In the preparation process of the silver-carrying antibacterial agent of example 2, sodium chloride was not added, and spherical nano silver was obtained.
The water absorption performance of example 2 is tested with reference to GB/T8939 & 2008 & sanitary napkins (including panty liners), and the water absorption rate of example 2 is 35.4 and the infiltration amount is 5.7 g.
Example 3
Silver-carrying bacteriostatic sanitary napkin comprises sanitary napkin main body and the wings that are located sanitary napkin main body both sides, the sanitary napkin main body comprises cotton soft layer, antibacterial layer, polymer water-absorbing resin layer, bottom, release paper and diolame in proper order, the antibacterial layer is formed by silver-carrying antibacterial fiber preparation.
The process of weaving the silver-loaded antibacterial fiber into the antibacterial layer can be carried out by referring to the invention patent with the patent application number of 201510291215.8, which is not the innovation of the invention.
The preparation method of the silver-loaded bacteriostatic sanitary towel comprises the following steps: the cotton soft layer (made of pure cotton non-woven cloth with the product number of 585-2) A bacteriostatic layer, a polymeric water-absorbent resin layer (prepared according to the patent of 'synthesis of a polymeric water-absorbent resin for physiological hygiene' with reference to application No. 201210579908.3), and a base layer (made of PE film, available from Wobbe dust-free materials of Suzhou, having a grammage of 40g/m2) Release paper (white glassine release paper available from Tianjin Yixuan International trade Co., Ltd., gram weight 90 g/m)20.04mm in thickness) and a coating film (made of low density polyethylene, purchased from Ethyl corporation, MODEL MODEL XP 39385, 0.025mm in thickness) are cut according to the size and then are sequentially bonded together to form a sanitary napkin main body, and then the wings are bonded on the two sides of the sanitary napkin main body to obtain the silver-loaded antibacterial sanitary napkin.
The preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 38%; dissolving polyvinyl alcohol in a dimethyl sulfoxide water solution with the mass fraction of 60% to obtain a solution B with the mass fraction of 14% of polyvinyl alcohol; mixing the silver-loaded antibacterial agent with absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25%; mixing the solution A and the solution B in a mass ratio of 1: 0.6, stirring for 20 minutes at the rotating speed of 400 r/min, then adding the dispersion liquid C with the mass of 0.2 time of that of the solution A, and uniformly mixing to obtain a spinning solution; and (3) carrying out electrostatic spinning on the spinning solution under the conditions of receiving distance of 14cm, spinning voltage of 28KV and flow rate of 0.6mL/h to obtain the silver-loaded antibacterial fiber.
The preparation process of the silver-loaded antibacterial agent comprises the following steps: mixing silver nitrate water solution with the molar concentration of 1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: 0.1(mg/mg/mL/mg) is placed in a reaction container and stirred for 20 minutes at the rotating speed of 400 revolutions per minute to obtain a mixed solution; heating the mixed solution under the microwave power of 300W for reaction for 3.5 minutes; after the reaction is finished, taking out the reaction solution, cooling to 23 ℃, centrifuging for 20 minutes at the rotating speed of 4000 revolutions per minute, and collecting bottom sediment; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: 80: 60(g/mL/mL/mL), and drying the mixture at 25 ℃ and a vacuum degree of 0.07MPa for 40 hours to obtain the silver-loaded antibacterial agent. Sodium chloride in an amount of 0.01 times the weight of the silver nitrate aqueous solution was added during the preparation of the silver-loaded antibacterial agent of example 3 to obtain cubic-shaped silver nanoparticles.
Example 4
Silver-carrying bacteriostatic sanitary napkin comprises sanitary napkin main body and the wings that are located sanitary napkin main body both sides, the sanitary napkin main body comprises cotton soft layer, antibacterial layer, polymer water-absorbing resin layer, bottom, release paper and diolame in proper order, the antibacterial layer is formed by silver-carrying antibacterial fiber preparation.
The process of weaving the silver-loaded antibacterial fiber into the antibacterial layer can be carried out by referring to the invention patent with the patent application number of 201510291215.8, which is not the innovation of the invention.
The preparation method of the silver-loaded bacteriostatic sanitary towel comprises the following steps: the cotton soft layer (made of pure cotton non-woven cloth with the product number of 585-2) A bacteriostatic layer, a polymeric water-absorbent resin layer (prepared according to the patent of 'synthesis of a polymeric water-absorbent resin for physiological hygiene' with reference to application No. 201210579908.3), and a base layer (made of PE film, available from Wobbe dust-free materials of Suzhou, having a grammage of 40g/m2) Release paper (white glassine release paper available from Tianjin Yixuan International trade Co., Ltd., gram weight 90 g/m)20.04mm in thickness) and a coating film (made of low density polyethylene, purchased from Ethyl corporation, MODEL MODEL XP 39385, 0.025mm in thickness) are cut according to the size and then are sequentially bonded together to form a sanitary napkin main body, and then the wings are bonded on the two sides of the sanitary napkin main body to obtain the silver-loaded antibacterial sanitary napkin.
The preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 38%; dissolving polyvinyl alcohol in a dimethyl sulfoxide water solution with the mass fraction of 60% to obtain a solution B with the mass fraction of 14% of polyvinyl alcohol; mixing the silver-loaded antibacterial agent with absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25%; mixing the solution A and the solution B in a mass ratio of 1: 0.6, stirring for 20 minutes at the rotating speed of 400 r/min, then adding the dispersion liquid C with the mass of 0.2 time of that of the solution A, and uniformly mixing to obtain a spinning solution; and (3) carrying out electrostatic spinning on the spinning solution under the conditions of receiving distance of 14cm, spinning voltage of 28KV and flow rate of 0.6mL/h to obtain the silver-loaded antibacterial fiber.
The preparation process of the silver-loaded antibacterial agent comprises the following steps: mixing silver nitrate water solution with the molar concentration of 1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: 0.6(mg/mg/mL/mg) is placed in a reaction container and stirred for 20 minutes at the rotating speed of 400 revolutions per minute to obtain a mixed solution; heating the mixed solution under the microwave power of 300W for reaction for 3.5 minutes; after the reaction is finished, taking out the reaction solution, cooling to 23 ℃, centrifuging for 20 minutes at the rotating speed of 4000 revolutions per minute, and collecting bottom sediment; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: 80: 60(g/mL/mL/mL), and drying the mixture at 25 ℃ and a vacuum degree of 0.07MPa for 40 hours to obtain the silver-loaded antibacterial agent. Sodium chloride in an amount of 0.06 times the weight of the silver nitrate aqueous solution was added in the preparation of the silver-carrying antibacterial agent of example 4 to obtain linear silver nanoparticles.
Example 5
Silver-carrying bacteriostatic sanitary napkin comprises sanitary napkin main body and the wings that are located sanitary napkin main body both sides, the sanitary napkin main body comprises cotton soft layer, antibacterial layer, polymer water-absorbing resin layer, bottom, release paper and diolame in proper order, the antibacterial layer is formed by silver-carrying antibacterial fiber preparation.
The process of weaving the silver-loaded antibacterial fiber into the antibacterial layer can be carried out by referring to the invention patent with the patent application number of 201510291215.8, which is not the innovation of the invention.
The preparation method of the silver-loaded bacteriostatic sanitary towel comprises the following steps: the cotton soft layer (made of pure cotton non-woven cloth with the product number of 585-2) A bacteriostatic layer, a polymeric water-absorbent resin layer (prepared according to the patent of 'synthesis of a polymeric water-absorbent resin for physiological hygiene' with reference to application No. 201210579908.3), and a base layer (made of PE film, available from Wobbe dust-free materials of Suzhou, having a grammage of 40g/m2) From typePaper (white glassine release paper available from Tianjin Yixuan International trade Co., Ltd., grammage 90 g/m)20.04mm in thickness) and a coating film (made of low density polyethylene, purchased from Ethyl corporation, MODEL MODEL XP 39385, 0.025mm in thickness) are cut according to the size and then are sequentially bonded together to form a sanitary napkin main body, and then the wings are bonded on the two sides of the sanitary napkin main body to obtain the silver-loaded antibacterial sanitary napkin.
The preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 38%; dissolving polyvinyl alcohol in a dimethyl sulfoxide water solution with the mass fraction of 60% to obtain a solution B with the mass fraction of 14% of polyvinyl alcohol; mixing the silver-loaded antibacterial agent with absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25%; mixing the solution A and the solution B in a mass ratio of 1: 0.6, stirring for 20 minutes at the rotating speed of 400 r/min, then adding the dispersion liquid C with the mass of 0.2 time of that of the solution A, and uniformly mixing to obtain a spinning solution; and (3) carrying out electrostatic spinning on the spinning solution under the conditions of receiving distance of 14cm, spinning voltage of 28KV and flow rate of 0.6mL/h to obtain the silver-loaded antibacterial fiber.
The silver-loaded antibacterial agent is a silver-silicon dioxide composite material, and the preparation process of the silver-silicon dioxide composite material comprises the following steps:
(1) drying the silicon dioxide at 110 ℃ for 1-2 hours; and (3) mixing the dried silicon dioxide and absolute ethyl alcohol in a solid-to-liquid ratio of 1: 400(g/mL) was stirred at 230 rpm for 20 minutes; then adding distilled water 2 times the weight of the silicon dioxide and sodium hydroxide 0.15 times the weight of the silicon dioxide, and continuing stirring at the rotating speed of 230 r/min for 26 hours to obtain reaction liquid I;
(2) mixing silver nitrate water solution with the molar concentration of 1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: 0.1(mg/mg/mL/mg) is placed in a reaction container and stirred for 20 minutes at the rotating speed of 400 revolutions per minute to obtain a mixed solution; heating the mixed solution under the microwave power of 300W for reaction for 2 minutes; after the reaction is finished, taking out the reaction liquid, and cooling to 23 ℃ to obtain a reaction liquid II;
(3) adding a reaction liquid II into the reaction liquid I, wherein the volume ratio of the reaction liquid I to the reaction liquid II is 6: 1, stirring at the rotating speed of 230 rpm for 20 minutes, centrifuging at the rotating speed of 4000 rpm for 20 minutes, and collecting bottom sediment; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: 80: 60(g/mL/mL/mL), and drying the mixture for 40 hours at the temperature of 25 ℃ and under the vacuum degree of 0.07MPa to obtain the silver-silicon dioxide composite material.
Example 6
Silver-carrying bacteriostatic sanitary napkin comprises sanitary napkin main body and the wings that are located sanitary napkin main body both sides, the sanitary napkin main body comprises cotton soft layer, antibacterial layer, polymer water-absorbing resin layer, bottom, release paper and diolame in proper order, the antibacterial layer is formed by silver-carrying antibacterial fiber preparation.
The process of weaving the silver-loaded antibacterial fiber into the antibacterial layer can be carried out by referring to the invention patent with the patent application number of 201510291215.8, which is not the innovation of the invention.
The preparation method of the silver-loaded bacteriostatic sanitary towel comprises the following steps: the cotton soft layer (made of pure cotton non-woven cloth with the product number of 585-2) A bacteriostatic layer, a polymeric water-absorbent resin layer (prepared according to the patent of 'synthesis of a polymeric water-absorbent resin for physiological hygiene' with reference to application No. 201210579908.3), and a base layer (made of PE film, available from Wobbe dust-free materials of Suzhou, having a grammage of 40g/m2) Release paper (white glassine release paper available from Tianjin Yixuan International trade Co., Ltd., gram weight 90 g/m)20.04mm in thickness) and a coating film (made of low density polyethylene, purchased from Ethyl corporation, MODEL MODEL XP 39385, 0.025mm in thickness) are cut according to the size and then are sequentially bonded together to form a sanitary napkin main body, and then the wings are bonded on the two sides of the sanitary napkin main body to obtain the silver-loaded antibacterial sanitary napkin.
The preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 38%; dissolving polyvinyl alcohol in a dimethyl sulfoxide water solution with the mass fraction of 60% to obtain a solution B with the mass fraction of 14% of polyvinyl alcohol; mixing the silver-loaded antibacterial agent with absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25%; mixing the solution A and the solution B in a mass ratio of 1: 0.6, stirring for 20 minutes at the rotating speed of 400 r/min, then adding the dispersion liquid C with the mass of 0.2 time of that of the solution A, and uniformly mixing to obtain a spinning solution; and (3) carrying out electrostatic spinning on the spinning solution under the conditions of receiving distance of 14cm, spinning voltage of 28KV and flow rate of 0.6mL/h to obtain the silver-loaded antibacterial fiber.
The silver-loaded antibacterial agent is a silver-kaolinite composite material, and the preparation process of the silver-kaolinite composite material comprises the following steps:
(1) removing impurities from the kaolinite, grinding, sieving by a 300-mesh sieve, and calcining for 2 hours at 600 ℃ to obtain kaolinite powder;
(2) mixing silver nitrate water solution with the molar concentration of 1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: 0.1(mg/mg/mL/mg) is placed in a reaction container and stirred for 20 minutes at the rotating speed of 400 revolutions per minute to obtain a mixed solution; heating the mixed solution under the microwave power of 300W for reaction for 2 minutes; after the reaction is finished, taking out the reaction liquid, and cooling to 23 ℃ to obtain the reaction liquid;
(3) adding kaolinite powder into the reaction liquid obtained in the step (2), then adding phosphoric acid which is 0.08 times of the weight of the kaolinite powder, stirring for 50 minutes at the rotating speed of 260 revolutions per minute, centrifuging for 20 minutes at the rotating speed of 4000 revolutions per minute, and collecting bottom sediment; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: 80: 60(g/mL/mL/mL), and drying the mixture for 40 hours at the temperature of 25 ℃ and the vacuum degree of 0.07MPa to obtain the silver-kaolinite composite material.
Example 7
Silver-carrying bacteriostatic sanitary napkin comprises sanitary napkin main body and the wings that are located sanitary napkin main body both sides, the sanitary napkin main body comprises cotton soft layer, antibacterial layer, polymer water-absorbing resin layer, bottom, release paper and diolame in proper order, the antibacterial layer is formed by silver-carrying antibacterial fiber preparation.
The process of weaving the silver-loaded antibacterial fiber into the antibacterial layer can be carried out by referring to the invention patent with the patent application number of 201510291215.8, which is not the innovation of the invention.
The preparation method of the silver-loaded bacteriostatic sanitary towel comprises the following steps: the cotton soft layer (made of pure cotton non-woven cloth with the product number of 585-2) A bacteriostatic layer, a polymeric water-absorbent resin layer (prepared according to the patent of 'synthesis of a polymeric water-absorbent resin for physiological hygiene' with reference to application No. 201210579908.3), and a base layer (made of PE film, available from Wobbe dust-free materials of Suzhou, having a grammage of 40g/m2) Release paper (white glassine release paper available from Tianjin Yixuan International trade Co., Ltd., gram weight 90 g/m)20.04mm in thickness) and a coating film (made of low density polyethylene, purchased from Ethyl corporation, MODEL MODEL XP 39385, 0.025mm in thickness) are cut according to the size and then are sequentially bonded together to form a sanitary napkin main body, and then the wings are bonded on the two sides of the sanitary napkin main body to obtain the silver-loaded antibacterial sanitary napkin.
The preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 38%; dissolving polyvinyl alcohol in a dimethyl sulfoxide water solution with the mass fraction of 60% to obtain a solution B with the mass fraction of 14% of polyvinyl alcohol; mixing the silver-loaded antibacterial agent with absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25%; mixing the solution A and the solution B in a mass ratio of 1: 0.6, stirring for 20 minutes at the rotating speed of 400 r/min, then adding the dispersion liquid C with the mass of 0.2 time of that of the solution A, and uniformly mixing to obtain a spinning solution; and (3) carrying out electrostatic spinning on the spinning solution under the conditions of receiving distance of 14cm, spinning voltage of 28KV and flow rate of 0.6mL/h to obtain the silver-loaded antibacterial fiber.
The silver-loaded antibacterial agent is a mixture of a silver-silicon dioxide composite material and a silver-kaolinite composite material, wherein the mass ratio of the silver-silicon dioxide composite material to the silver-kaolinite composite material is 2.6: 1.
the preparation process of the silver-silicon dioxide composite material comprises the following steps:
(1) drying the silicon dioxide at 110 ℃ for 1-2 hours; and (3) mixing the dried silicon dioxide and absolute ethyl alcohol in a solid-to-liquid ratio of 1: 400(g/mL) was stirred at 230 rpm for 20 minutes; then adding distilled water 2 times the weight of the silicon dioxide and sodium hydroxide 0.15 times the weight of the silicon dioxide, and continuing stirring at the rotating speed of 230 r/min for 26 hours to obtain reaction liquid I;
(2) mixing silver nitrate water solution with the molar concentration of 1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: 0.1(mg/mg/mL/mg) is placed in a reaction container and stirred for 20 minutes at the rotating speed of 400 revolutions per minute to obtain a mixed solution; heating the mixed solution under the microwave power of 300W for reaction for 2 minutes; after the reaction is finished, taking out the reaction liquid, and cooling to 23 ℃ to obtain a reaction liquid II;
(3) adding a reaction liquid II into the reaction liquid I, wherein the volume ratio of the reaction liquid I to the reaction liquid II is 6: 1, stirring at the rotating speed of 230 rpm for 20 minutes, centrifuging at the rotating speed of 4000 rpm for 20 minutes, and collecting bottom sediment; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: 80: 60(g/mL/mL/mL), and drying the mixture for 40 hours at the temperature of 25 ℃ and under the vacuum degree of 0.07MPa to obtain the silver-silicon dioxide composite material.
The preparation process of the silver-kaolinite composite material comprises the following steps:
(1) removing impurities from the kaolinite, grinding, sieving by a 300-mesh sieve, and calcining for 2 hours at 600 ℃ to obtain kaolinite powder;
(2) mixing silver nitrate water solution with the molar concentration of 1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: 0.1(mg/mg/mL/mg) is placed in a reaction container and stirred for 20 minutes at the rotating speed of 400 revolutions per minute to obtain a mixed solution; heating the mixed solution under the microwave power of 300W for reaction for 2 minutes; after the reaction is finished, taking out the reaction liquid, and cooling to 23 ℃ to obtain the reaction liquid;
(3) adding kaolinite powder into the reaction liquid obtained in the step (2), then adding phosphoric acid which is 0.08 times of the weight of the kaolinite powder, stirring for 50 minutes at the rotating speed of 260 revolutions per minute, centrifuging for 20 minutes at the rotating speed of 4000 revolutions per minute, and collecting bottom sediment; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: 80: 60(g/mL/mL/mL), and drying the mixture for 40 hours at the temperature of 25 ℃ and the vacuum degree of 0.07MPa to obtain the silver-kaolinite composite material.
Test example 1
The safety of the silver-loaded bacteriostatic sanitary napkins of the embodiments 1-7 to human bodies is tested, and the specific test steps are as follows:
a subject: SPF New Zealand white rabbits, from Biotech Limited in Qingdao, weighing 2.25 kg.
The detection method comprises the following steps: new Zealand white rabbits were randomly assigned to 7 groups, and 24 hours before the test, hairs were cut off from both sides of the spinal column of the back without damaging the skin, and the hair removal ranges were 3cm × 3cm each. The next day, the silver-carrying bacteriostatic sanitary towel is cut into a sample with the area of 2.5cm multiplied by 2.5cm, the sample is covered on the hair-removed part of one side of the white rabbit, then the sample is covered by two layers of gauze and fixed by using a non-irritant adhesive tape, the hair-removed part of the other side is not treated, and the sanitary towel is removed after 4 hours. The skin reactions of the white rabbits were observed after 1 hour, 24 hours, and 48 hours, and then the skin reaction integral was calculated according to the regulation of "disinfection technical Specification" of the Ministry of public health of the people's republic of China.
The specific test results are shown in table 1.
Table 1: safety performance test result table
As can be seen from the table 1, the silver-loaded bacteriostatic sanitary towel is safe and non-irritant, has an integral of 0 to the skin reaction of the experimental white rabbit, and does not cause the skin irritation reaction of animals.
Test example 2
The bacteriostatic performance of the silver-loaded bacteriostatic sanitary napkins of examples 1-7 was tested, and the specific test steps were as follows: activating the strain, and adjusting the concentration of the strain to 106-108Transferring the cfu/ml bacterial solution into lml culture dishes, adding nutrient broth agar, and placing a silver-carrying medium with diameter of 21mm and thickness of 5mm in the center of each culture dishThe bacteriostatic sanitary towel sample has a bacterium growth inhibition zone, namely a bacteriostatic zone, around the wafer. After incubation at 37 ℃ for 48 hours, the zone diameters around the circular samples were observed and recorded.
The specific test results are shown in table 2.
Table 2: bacteriostatic property test result table
As can be seen from table 2, the bacteriostatic effect of example 3 is significantly better than that of examples 2-4, which is probably due to the fact that nano silver with different morphologies is generated when different amounts of sodium chloride are added. The quantity of silver ions released by the nano silver with different shapes is different in the sterilization process. The silver-loaded antibacterial fiber of the embodiment 3 is more beneficial to the release of nano silver and has good antibacterial effect. In examples 5 to 7, the nano silver is attached to the surface of the physical material by physical adsorption or chemical action, so that the nano silver becomes a part of the skeleton structure of the antibacterial material, and the nano silver is tightly combined on the antibacterial fiber, thereby facilitating the slow release of the nano silver and improving the antibacterial efficiency and durability of the silver-loaded antibacterial agent.
Test example 3
The tensile properties of the silver-loaded antimicrobial fibers of examples 2-7 were measured, and the specific test index was tensile strength. The silver-loaded antibacterial fiber was cut into standard sample strips according to GB/T634-1996, and the tensile strength was measured using a universal mechanical tester (model WEW-600B, available from Leichang tester, Inc., of Jinan, China).
The specific test results are shown in table 3.
Table 3: tensile property test result table
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (3)
1. The silver-loaded bacteriostatic sanitary towel is characterized by comprising a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, wherein the sanitary towel main body sequentially comprises a cotton soft layer, a bacteriostatic layer, a high-molecular water-absorbent resin layer, a bottom layer, release paper and a coating film, and the bacteriostatic layer is prepared from silver-loaded antibacterial fibers;
the preparation process of the silver-loaded antibacterial fiber comprises the following steps: dissolving gelatin in deionized water to obtain a solution A with the gelatin mass fraction of 30-40%; dissolving polyvinyl alcohol in 60-70% of dimethyl sulfoxide water solution to obtain 12-15% of solution B of polyvinyl alcohol; mixing the silver-loaded antibacterial agent and absolute ethyl alcohol to obtain a dispersion liquid C with the mass fraction of the silver-loaded antibacterial agent being 25-30%; mixing the solution A and the solution B in a mass ratio of 1: (0.6-0.8), stirring at the rotating speed of 300-500 r/min for 20-30 min, then adding the dispersion liquid C with the mass of 0.2-0.3 time of that of the solution A, and uniformly mixing to obtain a spinning solution; carrying out electrostatic spinning on the spinning solution under the conditions of receiving distance of 13-15cm, spinning voltage of 20-30KV and flow rate of 0.5-0.7mL/h to obtain the silver-loaded antibacterial fiber;
the silver-loaded antibacterial agent is a mixture of a silver-silicon dioxide composite material and a silver-kaolinite composite material, wherein the mass ratio of the silver-silicon dioxide composite material to the silver-kaolinite composite material is (2.6-3.1): 1;
the preparation process of the silver-silicon dioxide composite material comprises the following steps:
(1) drying the silicon dioxide at the temperature of 100-120 ℃ for 1-2 hours; and (3) mixing the dried silicon dioxide and absolute ethyl alcohol in a solid-to-liquid ratio of 1: (300-500) (g/mL) is stirred for 20-30 minutes at the rotating speed of 180-260 revolutions/minute; then adding distilled water 2-3 times of the weight of the silicon dioxide and sodium hydroxide 0.1-0.2 time of the weight of the silicon dioxide, and continuing stirring at the rotating speed of 180-260 r/min for 22-26 hours to obtain a reaction solution I;
(2) mixing silver nitrate water solution with the molar concentration of 0.8-1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: (0.1-0.6) (mg/mg/mL/mg) in a reaction vessel, and stirring at a rotation speed of 300-500 rpm for 20-30 minutes to obtain a mixed solution; heating the mixed solution for reaction for 2-4 minutes under the microwave power of 300-400W; after the reaction is finished, taking out the reaction liquid, and cooling to 23-25 ℃ to obtain a reaction liquid II;
(3) adding a reaction liquid II into the reaction liquid I, wherein the volume ratio of the reaction liquid I to the reaction liquid II is (5-6): 1, stirring at the rotating speed of 180-; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: (80-100): 60(g/mL/mL/mL), drying for 30-40 hours at the temperature of 25-30 ℃ and the vacuum degree of 0.07-0.08MPa to obtain the silver-silicon dioxide composite material;
the preparation process of the silver-kaolinite composite material comprises the following steps:
(1) removing impurities from the kaolinite, grinding, sieving with a 200-mesh sieve and a 300-mesh sieve, and calcining at the temperature of 500-800 ℃ for 2-3 hours to obtain kaolinite powder;
(2) mixing silver nitrate water solution with the molar concentration of 0.8-1mol/L, polyvinylpyrrolidone, ethylene glycol and sodium chloride in a ratio of 9: 11: 2: (0.1-0.6) (mg/mg/mL/mg) in a reaction vessel, and stirring at a rotation speed of 300-500 rpm for 20-30 minutes to obtain a mixed solution; heating the mixed solution for reaction for 2-4 minutes under the microwave power of 300-400W; after the reaction is finished, taking out the reaction liquid, and cooling to 23-25 ℃ to obtain the reaction liquid;
(3) adding kaolinite powder into the reaction liquid obtained in the step (2), then adding phosphoric acid which is 0.08-0.1 time of the weight of the kaolinite powder, stirring for 30-50 minutes at the rotating speed of 200-; washing the bottom sediment with acetone, distilled water and absolute ethyl alcohol in sequence, wherein the solid-to-liquid ratio of the bottom sediment to the acetone, the distilled water and the absolute ethyl alcohol is 1: 50: (80-100): 60(g/mL/mL/mL), and drying for 30-40 hours at the temperature of 25-30 ℃ and the vacuum degree of 0.07-0.08MPa to obtain the silver-kaolinite composite material.
2. A silver-carrying bacteriostatic sanitary napkin according to claim 1, wherein the ratio of the silver nitrate aqueous solution, the polyvinylpyrrolidone, the glycol and the sodium chloride is 9: 11: 2: 0.1 (mg/mg/mL/mg).
3. The preparation method of the silver-loaded bacteriostatic sanitary towel according to claim 1 or 2, characterized by comprising the following steps: cutting the cotton soft layer, the antibacterial layer, the high-molecular water-absorbing resin layer, the bottom layer, the release paper and the coating according to the size, sequentially bonding the cut cotton soft layer, the antibacterial layer, the high-molecular water-absorbing resin layer, the bottom layer, the release paper and the coating to form a sanitary towel main body, and then bonding the protective wings on two sides of the sanitary towel main body to obtain the silver-loaded antibacterial sanitary towel.
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| CN201810524914.6A CN108686256B (en) | 2018-05-28 | 2018-05-28 | Silver-carrying bacteriostatic sanitary towel and preparation method thereof |
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| CN201810524914.6A CN108686256B (en) | 2018-05-28 | 2018-05-28 | Silver-carrying bacteriostatic sanitary towel and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109825955B (en) * | 2019-02-03 | 2021-09-17 | 南通纺织丝绸产业技术研究院 | Antibacterial and anti-allergic paper diaper for adults and preparation method thereof |
| CN111705508A (en) * | 2020-07-02 | 2020-09-25 | 北京健翔嘉业日用品有限责任公司 | Antibacterial coconut fat fiber for sanitary towel and preparation method and application thereof |
| CN113908324B (en) * | 2021-09-26 | 2022-05-17 | 杭州淑洁卫生用品有限公司 | Disposable hygienic product with antibacterial function |
| CN114753016A (en) * | 2022-04-26 | 2022-07-15 | 扬州锦茂新材料科技有限公司 | Preparation method of high-color-stability antibacterial fiber |
| CN116492145B (en) * | 2023-04-28 | 2023-09-26 | 江苏宝姿实业有限公司 | Antibacterial and deodorizing sanitary towel and preparation process thereof |
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