CN112160071A - Antibacterial and deodorant natural fiber non-woven fabric and application thereof in disposable sanitary products - Google Patents
Antibacterial and deodorant natural fiber non-woven fabric and application thereof in disposable sanitary products Download PDFInfo
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- CN112160071A CN112160071A CN202010950124.1A CN202010950124A CN112160071A CN 112160071 A CN112160071 A CN 112160071A CN 202010950124 A CN202010950124 A CN 202010950124A CN 112160071 A CN112160071 A CN 112160071A
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- 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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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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
- 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
- A61L15/28—Polysaccharides or their derivatives
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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
- A61L15/40—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing ingredients of undetermined constitution or reaction products thereof, e.g. plant or animal extracts
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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
- A61L15/425—Porous materials, e.g. foams or sponges
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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
- A61L15/44—Medicaments
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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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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C1/00—Treatment of vegetable material
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- 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
- D04H1/425—Cellulose series
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- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/65—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing epoxy groups
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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
- A61L2300/10—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
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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
- 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
- A61L2300/432—Inhibitors, antagonists
- A61L2300/434—Inhibitors, antagonists of enzymes
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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
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/602—Type of release, e.g. controlled, sustained, slow
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
Abstract
The invention relates to the field of sanitary products, in particular to a bacteriostatic and deodorant natural fiber non-woven fabric, a preparation method thereof and application thereof in disposable sanitary products. The sugarcane fiber is used as one of the raw materials in the natural composite fiber, so that the defect of insufficient toughness of the cotton fiber as the other raw material can be improved, the strength can be improved, the requirements of the material on softness and comfort level can be met, and meanwhile, due to the addition of the chitosan modified attapulgite, the material is endowed with loose and breathable performance, and certain antibacterial and drug-loading capacities of the material are also improved. The polymerization effect of natural fiber in the material can be improved after the modification of the attapulgite in the application, so that the natural composite fiber is mixed more firmly, and the combined effect is better.
Description
Technical Field
The invention relates to the field of sanitary products, in particular to a bacteriostatic and deodorant natural fiber non-woven fabric, a preparation method thereof and application thereof in disposable sanitary products.
Background
As a resource-dependent industry, the supply of raw materials greatly restricts the development of the textile industry. Traditional natural fiber raw materials such as cotton and hemp are greatly restricted by geography, climate conditions and land area. To solve the gap of the textile raw material, the non-renewable resources need to be saved; at the same time, further development of existing resources is also required to be increased, and waste plant fibers are fully utilized.
In recent years, with the further progress in the construction of resource-saving society, people have been focusing on the development of various novel natural fibers, and various fibers that have not been utilized before have attracted much attention. Sugar cane fiber is a natural cellulose fiber extracted from sugar cane bark. Sugarcane is a main raw material of sugar-pressing, and is planted in large quantities worldwide, so that the development of sugarcane peel is also receiving great attention. As a novel fiber development, the spinnable sugarcane fiber is prepared by utilizing the sugarcane peel after sugar making, and the problem that the yield of the traditional spinning raw material cannot meet the usage amount can be solved. But also brings special wearability to the fabric due to the difference of the morphological structure of the new raw material. For example, the sugarcane fibers have the style characteristics of the fibrilia, but do not have the scratchiness of the fibrilia, thereby increasing the selectivity of raw materials for the production of the linen-like fabric and expanding the application range. Meanwhile, with the shortage of petroleum, the increasingly prominent environmental problems and the great increase of fiber materials as basic materials and engineering materials, the demand of people for living and industrial use on fiber raw materials is further increased, sugarcane fibers are developed and utilized, and a new thought is provided for expanding the sources of textile raw materials and filling gaps.
The properties of nonwoven fabrics are largely dependent on the properties of the fibers, which are classified into polymer fibers, natural plant fibers, and the like. The chemical fiber material is widely applied to the sanitary field and the cosmetic field, such as paper diapers, sanitary towels, facial masks, masks and the like, chemical fiber materials of the chemical fiber material not only have chemical residues and bring adverse effects on human skin and even health, but also can not be recycled, has long degradation time and can cause burden on the environment; the natural plant fiber can be recycled, is more environment-friendly, but the cotton fiber has insufficient toughness, is easy to ball and fall hair or has large brittleness, and causes stimulation to skin, so the process requirement is higher. Cotton is as the natural fiber raw materials that people daily used often, has soft absorbent effect, however can receive a lot of restrictions when preparing the non-woven fabrics, for example natural cotton has the hydrophobicity, need through degreasing treatment can be used for preparing panty-shape diapers top layer non-woven fabrics, cotton hydrophilicity after the degrease increases, adopt this kind of pure cotton non-woven fabrics as panty-shape diapers of surface course although absorption rate is fast, it is good to protect water and lock water nature, but the moist sensation is big, breed the bacterium very easily, and the taste of urine is difficult to get rid of, use very easily to cause phenomenons such as bedsore, red swelling, diaper rash for a long time. The diaper rash is caused by the fact that the humidity of the diaper is improved in the microclimate, the moisture increasing rate is reduced, the skin cuticle is overhydrated, namely after the cells absorb too much water, the cells expand and are loosely connected with each other, meanwhile, the pH value of the skin surface is increased, the activity of biological enzymes and microorganisms is increased under the stimulation of urine and loose stool, and the skin barrier function is damaged. It can be seen that whether the non-woven fabric material is soft or not and whether the non-woven fabric material is breathable or not have obvious influence on diaper rash, the antibacterial agent and the antibacterial material are added in the prior art to avoid bacterial breeding, but the research on the modification of the fiber is less, and the effect of eliminating the source of the peculiar smell generated by the excrement is not achieved. The surface layer non-woven fabric in the baby diaper, which is directly contacted with the skin of a baby, is required to be soft in hand feeling, light, thin, comfortable, skin-friendly and non-irritant, so that the non-woven fabric which can quickly penetrate liquid and ventilate is mostly adopted. When the non-woven fabric surface layer is prepared, in order to enable the material to have soft hand induction and avoid the use of hot air and a bonding agent, a spunlace method is mostly adopted, meanwhile, the research on the recyclable material of the disposable sanitary product is never stopped, however, although natural fibers are environment-friendly and easy to obtain, the processing process is complex, especially the fiber strength and toughness are insufficient, and if the air permeability is not guaranteed by adding a bonding agent, the non-woven fabric product is difficult to prepare.
The attapulgite is a nano-scale porous fibrous silicate clay mineral, has large specific surface area, and most of cations, water molecules and organic molecules with certain sizes can be directly adsorbed into pore channels. The purified attapulgite has small friction hardness, is soft, fine and light, has better compatibility with various solvents after modification, has wide application in the field of pharmaceutical cosmetics, not only has a surface active center and an adsorption function, but also has a catalytic action, and can ensure that the composite material has enhanced mechanical strength/heat resistance and the like due to larger specific surface area and strong thermal stability; the prior art finds that the composite material has a loose and porous structure due to the introduction of the attapulgite, but the attapulgite is not well dispersed in an organic phase and has poor compatibility with macromolecules, organic modified attapulgite is needed, the surface microenvironment between chains of clay layers can be modified and improved, the hydrophobicity is increased, the material performance is improved, and the attapulgite is jointed on sugarcane fibers to prepare the composite material and improve the performance of absorbent cotton fibers.
CN102512705B discloses a material for preventing diaper rash and a preparation method thereof, wherein a three-layer composite coiled material is used for sandwiching a particle composition for preventing diaper rash, the composition formula comprises urease inhibitor, chelating agent, antibacterial agent, high-molecular water-absorbent resin and the like, the components are complex, and a sandwich structure needs to be prepared.
CN108049023B discloses a non-woven fabric of absorbent cotton fiber, which is provided with a plurality of concave-convex points and is processed by a spunlace method to prepare the non-woven fabric so as to enhance urine absorption and infiltration. Although the problem of cotton fiber rewetting is improved, the fiber properties are not changed and thus cannot be durably applied.
CN 104278433B is a well-integrated composite nonwoven material prepared by a modified spunlace process, which includes a mixture of continuous filaments, synthetic staple fibers, and natural fibers, but requires the addition of polymeric fibers, and is not suitable for natural plant fibers;
the natural fiber is not matched with the fiber modification and the spunlace process, so that the breathable light and thin non-woven fabric prepared from the natural fiber is difficult. The adhesive fiber web is added for coalescence, bonding points are not easy to open in spunlace, entanglement forming cannot be achieved, the bonding points are too weak without the adhesive, fibers are coarse and hard, the fiber web is easy to disperse, and the non-woven fabric prepared by the hot air reinforcement method is fluffy, soft and insufficient in air permeability, so that the technology needs to be researched and improved to prepare the spunlace composite non-woven fabric which is light, thin and air permeable, can be subjected to spunlace composite reinforcement and is not easy to deform, and the bonding and strength of the material need to be improved.
Disclosure of Invention
In order to solve the technical problems, an object of the present invention is to provide a bacteriostatic deodorant natural fiber non-woven fabric, which can improve the defect of insufficient toughness of another raw material cotton fiber and improve strength by using sugarcane fiber as one of the raw materials in natural composite fiber, and meet the requirements of the material on softness and comfort, and simultaneously, due to the addition of chitosan modified attapulgite, not only the material is endowed with loose and breathable performance, but also certain antibacterial and drug-loading capabilities are improved. The polymerization effect of natural fiber in the material can be improved after the modification of the attapulgite in the application, so that the natural composite fiber is mixed more firmly, and the combined effect is better. In addition, the single process is avoided being adopted, the wet-laid method is combined with the spunlace reinforcement, the cross-linking entanglement among fibers is increased, the additional addition of an adhesive and the hot air reinforcement are not needed, and the moisture regain problem of the absorbent cotton non-woven fabric is improved while the non-woven fabric is kept light, thin and breathable.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bacteriostatic and deodorant natural fiber non-woven fabric comprises the following components in parts by weight of natural composite fibers used for preparing the non-woven fabric:
2-15 parts of absorbent cotton fiber
1-8 parts of sugarcane fiber
0.1-1 part of modified attapulgite;
the modified attapulgite adopts chitosan modified attapulgite, sugarcane fibers are bleached and softened and then are mixed with the modified attapulgite, the dimethylaminoethyl methacrylate and the citric acid to react to prepare mixed slurry, and the modified attapulgite: dimethylaminoethyl methacrylate: the weight ratio of the citric acid is 1: 0.01-0.5: 0.01-0.1, preparing a net by mixing the slurry, and drying to obtain a composite fiber layer; the composite fiber layer and the fiber layer made of absorbent cotton fibers are superposed, and the antibacterial deodorizing natural fiber non-woven fabric is prepared by combining wet-laid web formation with a spunlace reinforcement process.
The preparation method comprises the following steps of crushing attapulgite until the particle size is less than or equal to 2cm, washing with water for 2-3 times, drying, adding concentrated hydrochloric acid and deionized water with the volume of 20-50 times of that of the attapulgite, stirring for 1 hour at 80 ℃, cooling, suction-filtering, washing with water until filtrate is neutral, drying, adding the filtrate into a toluene solution, performing ultrasonic dispersion for 15 minutes, adding (3-chloropropyl) trimethyl oxysilane while stirring under the protection of nitrogen gas flow, continuing refluxing and stirring for 12 hours, suction-filtering, washing with absolute ethyl alcohol, drying, adding a 1% chitosan solution, performing ultrasonic dispersion for 10 minutes, stirring and reacting for 6 hours at 90 ℃, washing with a 0.2% acetic acid solution and deionized water, and drying to obtain the chitosan-modified attapulgite.
As a further improvement, the absorbent cotton fiber is treated by epoxy modified silicone oil.
As a further improvement, the preparation method of the sugarcane fiber comprises the following steps: segmenting and chopping fresh sugarcane according to the natural times to obtain sugarcane peel with small broken length, applying pressure to squeeze out most of water and sugar, adding distilled water, and controlling the bath ratio to be 50: boiling in a water bath at 100 ℃, changing water for several times to remove residual sugar in the sugarcane peel, taking out and cleaning the sugarcane peel, drying in a 60 ℃ oven to constant weight, obtaining the raw material of the sugarcane peel by taking 40mm as a standard section, adding distilled water and 2% of urea reagent, wherein the bath ratio is 1: 50, boiling in water bath at 100 ℃, washing the sugarcane peel after changing water for several times, putting the sugarcane peel into a 50 ℃ oven to be dried to constant weight, then adding acid liquid with the concentration of 35-40ml/L at 70-80 ℃ for boiling for 1.5-2h, adding alkali liquid with the concentration of 8-10% at 60-70 ℃ for boiling after washing with water, simultaneously carrying out ultrasonic treatment for 1.5-2h, wherein the bath ratio is 1: 30, washing with water, drying to obtain sugarcane fibers, bleaching with hydrogen peroxide, and treating with cellulase to obtain softened sugarcane fibers.
In a further improvement, the obtained nonwoven fabric is loaded with a drug, the drug is coated on the surface of a roll by a winding wet coating roll method, and the drug is coated on the surface layer of the nonwoven fabric while the nonwoven fabric is wound.
As a further improvement, the medicament is an antibacterial agent or a urease inhibitor.
Further, the application also discloses an antibacterial and deodorant natural fiber non-woven fabric, and the preparation method of the non-woven fabric comprises the following steps:
1) preparing modified attapulgite, crushing the attapulgite to a particle size of less than or equal to 2cm, washing for 2-3 times, drying, adding concentrated hydrochloric acid and deionized water with the volume of 20-50 times, stirring for 1h at 80 ℃, cooling, performing suction filtration, washing until filtrate is neutral, drying, adding the filtrate into a toluene solution, performing ultrasonic dispersion for 15min, adding (3-chloropropyl) trimethyl oxysilane while stirring under the protection of nitrogen gas flow, continuing refluxing and stirring for 12h, performing suction filtration, washing with absolute ethyl alcohol, drying, adding a 1% chitosan solution, performing ultrasonic dispersion for 10min, stirring and reacting for 6h at 90 ℃, washing with a 0.2% acetic acid solution and deionized water, and drying to obtain chitosan modified attapulgite;
2) preparing 20% aqueous solution from epoxy modified silicone oil, spraying absorbent cotton fibers, carrying out moisture regain treatment until the moisture regain of the cotton fibers reaches more than 10%, opening and carding by using a carding machine at a working roll speed of 60-75 m/min and a doffer speed of 25-45 m/min, carding to form a web, washing with deionized water, and drying to obtain an absorbent cotton fiber layer;
3) preparing sugarcane fibers, namely segmenting and chopping fresh sugarcane according to the natural times to obtain sugarcane peels with small broken lengths, applying pressure to extrude most of water and sugar, adding distilled water, and controlling the bath ratio to be 50: boiling in a water bath at 100 ℃, changing water for several times to remove residual sugar in the sugarcane peel, taking out and cleaning the sugarcane peel, drying in a 60 ℃ oven to constant weight, obtaining the raw material of the sugarcane peel by taking 40mm as a standard section, adding distilled water and 2% of urea reagent, wherein the bath ratio is 1: 50, boiling in water bath at 100 ℃, washing the sugarcane peel after changing water for several times, putting the sugarcane peel into a 50 ℃ oven to be dried to constant weight, then adding acid liquid with the concentration of 35-40ml/L at 70-80 ℃ for boiling for 1.5-2h, adding alkali liquid with the concentration of 8-10% at 60-70 ℃ for boiling after washing with water, simultaneously carrying out ultrasonic treatment for 1.5-2h, wherein the bath ratio is 1: 30, washing with water, drying to obtain sugarcane fibers, bleaching with hydrogen peroxide, and treating with cellulase to obtain softened sugarcane fibers.
4) Softened sugar cane fiber and modified attapulgite are blended in a ratio of 8: 1, adding dimethylaminoethyl methacrylate, carrying out high-pressure homogeneous dispersion, adding citric acid at the pressure of 200-400mpa, reacting in a reaction kettle at the temperature of 90-110 ℃ for 1-3h, then feeding into a head box, depositing fibers on a water-permeable porous roller by using the water flow pressure to form a wet fiber web, and carrying out hot air blowing and drying to obtain a composite fiber web, wherein the modified attapulgite clay: dimethylaminoethyl methacrylate: the weight ratio of the citric acid is 1: 0.01-0.5: 0.01-0.1;
5) superposing the absorbent cotton fiber layer obtained in the step 2 and the composite fiber layer obtained in the step 4, pre-wetting/compacting/standby through a pre-wetting roller, entering a spunlace step, wherein the equipment comprises 4 spunlace areas, the spunlace pressure is respectively 10-20bar, 20-50bar, 50-90bar and 90-100bar, the spunlace areas 1 and 3 carry out spunlace from the absorbent cotton fiber layer to the composite fiber layer, the spunlace areas 2 and 4 carry out spunlace from the composite fiber layer to the absorbent cotton fiber layer until the fiber web is fully entangled, washing the fiber web to be neutral, and sending the mixed fiber web into a drying room for drying to obtain the absorbent cotton fiber web with the gram weight of 30-45g/m2The nonwoven fabric of (1).
Preferably, the obtained nonwoven fabric is loaded with a drug, the drug is applied to the surface of a roll by a roll-to-roll wet coating method, and the drug is applied to the surface layer of the nonwoven fabric while the nonwoven fabric is rolled.
Preferably, the drug is an antibacterial agent or a urease inhibitor.
Further, the application provides a disposable hygienic product's top layer, this top layer is adopted a bacteriostatic and deodorant natural fiber non-woven fabrics.
Further, the present application provides a disposable sanitary article comprising said cover layer.
The invention has the beneficial effects that: compared with pure absorbent cotton fibers, the natural composite fibers prepared from the absorbent cotton fibers, the sugarcane fibers and the modified attapulgite have the advantages of good toughness and high strength, are more comfortable and soft, have good skin-friendly property, have good antibacterial performance and have obvious deodorization effect. The chitosan modified attapulgite not only has certain antibacterial capacity, but also can enhance the loading capacity of materials to antibacterial drugs, so that the composite fiber can cooperate with the antibacterial action of drugs to slowly release the drugs, and the prepared non-woven fabric has good antibacterial performance. The sugarcane fiber is a waste resource, is economic and environment-friendly as a raw material, and can overcome the defects of insufficient toughness of single fiber and the like. In addition, the fiber net is reinforced through combining a wet-laid web with a spunlace process, the fiber is kept soft and fluffy, the curing effect is better, and the comfort and the breathability of the non-woven fabric can be kept.
Detailed Description
The absorbent cotton is purchased from Jinan Pluronic science and technology Co., Ltd, and the other chemical reagents are purchased from Hubei Ruitai medicine science and technology Co., Ltd. The invention is further illustrated by the following specific examples.
Example 1 preparation of non-woven absorbent Cotton Fabric
Preparing 20% aqueous solution of epoxy modified silicone oil, spraying absorbent cotton fibers, carrying out moisture regain treatment until the moisture regain of the cotton fibers reaches more than 10%, opening and carding by using a carding machine at a working roll speed of 60-75 m/min and a doffer speed of 25-45 m/min to form a thin net, and washing by using deionized water; taking a double-layer absorbent cotton fiber web, pre-wetting/compacting/standby through a pre-wetting roller, entering a spunlace step, wherein the equipment comprises 4 spunlace areas, the spunlace pressure is respectively 10-20bar, 20-50bar, 50-90bar and 90-100bar, the 1 st spunlace area and the 3 rd spunlace area carry out spunlace from a first fiber layer to a second fiber layer, and the 2 nd spunlace area and the 4 th spunlace area carry out spunlace from the second fiber layer to the first fiber layer until the fiber web is fully spunlacedEntangling, washing to neutral, drying the mixed fiber web in a drying room to obtain the fiber web with the gram weight of 30-45g/m2The nonwoven fabric of (1).
Example 2 preparation of absorbent Cotton/sugar cane bark/modified Attapulgite composite fiber nonwoven Fabric
Preparing modified attapulgite, crushing the attapulgite to a particle size of less than or equal to 2cm, washing for 2-3 times, drying, adding concentrated hydrochloric acid and deionized water with the volume of 20-50 times, stirring for 1h at 80 ℃, cooling, performing suction filtration, washing until filtrate is neutral, drying, adding the filtrate into a toluene solution, performing ultrasonic dispersion for 15min, adding (3-chloropropyl) trimethyl oxysilane while stirring under the protection of nitrogen gas flow, continuing refluxing and stirring for 12h, performing suction filtration, washing with absolute ethyl alcohol, drying, adding a 1% chitosan solution, performing ultrasonic dispersion for 10min, stirring and reacting for 6h at 90 ℃, washing with a 0.2% acetic acid solution and deionized water, and drying to obtain chitosan modified attapulgite;
preparing sugarcane fibers, namely segmenting and chopping fresh sugarcane according to the natural times to obtain sugarcane peels with small broken lengths, applying pressure to extrude most of water and sugar, adding distilled water, and controlling the bath ratio to be 50: boiling in a water bath at 100 ℃, changing water for several times to remove residual sugar in the sugarcane peel, taking out and cleaning the sugarcane peel, drying in a 60 ℃ oven to constant weight, obtaining the raw material of the sugarcane peel by taking 40mm as a standard section, adding distilled water and 2% of urea reagent, wherein the bath ratio is 1: 50, boiling in a water bath at 100 ℃, washing the sugarcane peels after water is changed for a plurality of times, putting the cleaned sugarcane peels into a 50 ℃ oven to be dried to constant weight, then adding acid liquid with the concentration of 35ml/L at 70 ℃ for boiling for 1.5h, adding alkali liquid with the concentration of 8% at 60 ℃ for boiling after water washing, simultaneously carrying out ultrasonic treatment for 1.5h, wherein the bath ratio is 1: 30, washing with water, drying to obtain sugarcane fibers, bleaching with hydrogen peroxide, and treating with cellulase to obtain softened sugarcane fibers;
mixing the softened sugarcane fibers and the modified attapulgite in a ratio of 8: 1, adding dimethylaminoethyl methacrylate, carrying out high-pressure homogeneous dispersion at the pressure of 200 & lt- & gt and 400 & lt- + & gt mpa, adding citric acid, reacting for 1-3 hours in a reaction kettle at the temperature of 90-110 ℃, then feeding into a head box, depositing fibers on a water-permeable porous roller by utilizing the water flow pressure to form a wet fiber web, and carrying out hot air blowing, scattering and drying to obtain the attapulgite cotton stalk and bark composite fiber web, wherein the modified attapulgite clay: dimethylaminoethyl methacrylate: the weight ratio of the citric acid is 1: 0.01: 0.01;
preparing 20% aqueous solution from epoxy modified silicone oil, spraying absorbent cotton fibers, carrying out moisture regain treatment until the moisture regain of the cotton fibers reaches more than 10%, opening and carding by using a carding machine at a working roll speed of 60-75 m/min and a doffer speed of 25-45 m/min to obtain a thin web, and washing with deionized water to obtain an absorbent cotton fiber layer;
superposing the absorbent cotton fiber layer and the composite fiber layer, pre-wetting/compacting/standby by a pre-wetting roller, entering a spunlace step, wherein the equipment comprises 4 spunlace regions, the spunlace pressure is respectively 10-20bar, 20-50bar, 50-90bar and 90-100bar, the 1 st and 3 rd spunlace regions carry out spunlace from the absorbent cotton fiber layer to the composite fiber layer, the 2 nd and 4 th spunlace regions carry out spunlace from the composite fiber layer to the absorbent cotton fiber layer until the fiber web is fully entangled, and sending the mixed fiber web into a drying room for drying to obtain the absorbent cotton fiber layer with the gram weight of 30-45g/m2The nonwoven fabric of (1).
Example 3 preparation of absorbent Cotton/Cotton stalk Peel/modified Attapulgite composite fiber nonwoven Fabric
Preparing modified attapulgite, crushing the attapulgite to a particle size of less than or equal to 2cm, washing for 2-3 times, drying, adding concentrated hydrochloric acid and deionized water with the volume of 20-50 times, stirring for 1h at 80 ℃, cooling, performing suction filtration, washing until filtrate is neutral, drying, adding the filtrate into a toluene solution, performing ultrasonic dispersion for 15min, adding (3-chloropropyl) trimethyl oxysilane while stirring under the protection of nitrogen gas flow, continuing refluxing and stirring for 12h, performing suction filtration, washing with absolute ethyl alcohol, drying, adding a 1% chitosan solution, performing ultrasonic dispersion for 10min, stirring and reacting for 6h at 90 ℃, washing with a 0.2% acetic acid solution and deionized water, and drying to obtain chitosan modified attapulgite;
preparing sugarcane fibers, namely segmenting and chopping fresh sugarcane according to the natural times to obtain sugarcane peels with small broken lengths, applying pressure to extrude most of water and sugar, adding distilled water, and controlling the bath ratio to be 50: boiling in a water bath at 100 ℃, changing water for several times to remove residual sugar in the sugarcane peel, taking out and cleaning the sugarcane peel, drying in a 60 ℃ oven to constant weight, obtaining the raw material of the sugarcane peel by taking 40mm as a standard section, adding distilled water and 2% of urea reagent, wherein the bath ratio is 1: 50, boiling in water bath at 100 ℃, washing the sugarcane peel after changing water for a plurality of times, putting the cleaned sugarcane peel into a 50 ℃ oven to be dried to constant weight, then adding acid liquid with the concentration of 40ml/L at 80 ℃ for boiling for 2 hours, adding alkali liquid with the concentration of 10% at 70 ℃ for boiling after water washing, and simultaneously carrying out ultrasonic treatment for 2 hours, wherein the bath ratio is 1: 30, washing with water, drying to obtain sugarcane fibers, bleaching with hydrogen peroxide, and treating with cellulase to obtain softened sugarcane fibers;
mixing sugarcane fibers and modified attapulgite in a ratio of 8: 1, adding dimethylaminoethyl methacrylate, carrying out high-pressure homogeneous dispersion at the pressure of 200 & lt- & gt and 400 & lt- + & gt mpa, adding citric acid, reacting for 1-3 hours in a reaction kettle at the temperature of 90-110 ℃, then feeding into a head box, depositing fibers on a water-permeable porous roller by utilizing the water flow pressure to form a wet fiber web, and carrying out hot air blowing, scattering and drying to obtain the attapulgite cotton stalk and bark composite fiber web, wherein the modified attapulgite clay: dimethylaminoethyl methacrylate: the weight ratio of the citric acid is 1: 0.5: 0.1;
preparing 20% aqueous solution from epoxy modified silicone oil, spraying absorbent cotton fibers, carrying out moisture regain treatment until the moisture regain of the cotton fibers reaches more than 10%, opening and carding by using a carding machine at a working roll speed of 60-75 m/min and a doffer speed of 25-45 m/min to obtain a thin web, and washing with deionized water to obtain an absorbent cotton fiber layer;
superposing the absorbent cotton fiber layer and the composite fiber layer, pre-wetting/compacting/standby by a pre-wetting roller, entering a spunlace step, wherein the equipment comprises 4 spunlace regions, the spunlace pressure is respectively 10-20bar, 20-50bar, 50-90bar and 90-100bar, the 1 st and 3 rd spunlace regions carry out spunlace from the absorbent cotton fiber layer to the composite fiber layer, the 2 nd and 4 th spunlace regions carry out spunlace from the composite fiber layer to the absorbent cotton fiber layer until the fiber web is fully entangled, and sending the mixed fiber web into a drying room for drying to obtain the absorbent cotton fiber layer with the gram weight of 30-45g/m2The nonwoven fabric of (1).
EXAMPLE 4 preparation of nonwoven Fabric for dressing Cotton
The nonwoven fabric prepared in example 1 was used, and the drug was applied to the surface layer while the nonwoven fabric was wound. The medicine is medicinal zinc oxide, and is dissolved in 50% acetic acid solution to prepare zinc oxide solution with weight concentration of 1%, and the zinc oxide solution is sprayed on the surface of the roll.
EXAMPLE 5 preparation of nonwoven Fabric with composite fibers for dressing
The nonwoven fabric prepared in example 2 was used, and the drug was applied to the surface layer while the nonwoven fabric was wound. The medicine is medicinal zinc oxide, and is dissolved in 50% acetic acid solution to prepare zinc oxide solution with weight concentration of 1%, and the zinc oxide solution is sprayed on the surface of the roll.
And (3) experimental design:
sample information: example 1 is a cotton wool nonwoven fabric; examples 2 and 3 are absorbent cotton/sugar cane bark fiber/attapulgite composite fiber non-woven fabrics of the invention; example 4 is absorbent cotton double-layer fiber non-woven fabric application; example 5 is a composite fiber nonwoven fabric dressing of the present invention;
additionally setting a blank group: selected from the surface layer of the commercially available paper diaper as a blank group.
Test one: mechanical property test and moisture permeability test
The mechanical properties of the composite material are measured according to GB/T1040.3-2006 standard by adopting a XWW-10A type universal tensile testing machine, a tensile load is applied to a sample at the speed of 3mm/min until the sample is broken, 10 parallel samples are tested for each type, and the average value is taken.
The moisture permeability is tested by a water vapor transmission rate testing method and a Labthink blue light W3/031 water vapor transmission rate tester according to GB/T1037-.
The results are shown in Table 1
TABLE 1
| Thickness (mm) | Tensile breaking strength MD (N/25mm) | Permeability (g/m2.24h) | |
| Example 1 | 0.72 | 11 | 10.51 |
| Example 2 | 0.57 | 19 | 27.12 |
| Example 3 | 0.57 | 18 | 26.99 |
| Blank group 1 | 0.57 | 10 | 12.86 |
As a result, compared with pure cotton fibers, the composite fibers have higher strength, the material characteristics and the preparation process have influence on the material strength, the pure cotton non-woven fabric has poor permeability continuity, and the liquid permeability of the composite fiber non-woven fabric is enhanced.
And (2) test II: test of deodorizing Effect
Cutting the non-woven fabric into 15 × 15cm square pieces, collecting odor substances, collecting urine and feces mixed solution, collecting female physiological secretion, collecting control group, and collecting distilled water. The three groups of samples are placed in an environment with room temperature and 40% humidity, 10ml is extracted after the three groups of samples are placed for 4-5h, an injection needle tube is injected into the group of the embodiment, the samples are placed in a closed box after liquid flows through non-woven fabrics, and the three groups of samples are kept still for 50 min. Adopting a sensory evaluation method, opening the box body by 10-20 testers under the double-blind condition, carrying out smell-smelling scoring within a distance of 5cm, testing each sample for 3 times, and taking an average value. The degree of malodor is calculated using the score. 5: strong malodor; 4: strong odor; 3: unpleasant odors that are easily smelled; 2: a tolerable odor; 1: a weak taste; 0: without any taste. The measurement evaluations were carried out 50min after the sample injection. And putting into red litmus test paper to test the ammonia content.
TABLE 2
| Sample (I) | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Urine and excrement liquid | 5 | 1.5 | 1.5 | 4 | 1 |
| Secretion material | 5 | 2 | 2 | 4.5 | 1 |
| Control group (Water) | 0 | 0 | 0 | 0 | 0 |
According to the color shade of the litmus red test paper, the ammonia is the least in example 5, the color is the darkest and the taste is the heaviest in example 1. According to the results, the examples 2, 3 and 5 have good deodorization effect, the zinc oxide loaded in the examples 4 and 5 has no deodorization effect, but the medicine has antibacterial effect, and the odor is indirectly reduced. Examples 1 and 4 the non-woven fabric of absorbent cotton fiber had the least deodorizing effect. The absorbent cotton fiber/sugarcane peel/attapulgite composite fiber material has a deodorization effect.
And (3) test III: antibacterial testing
The bacteriostatic rate test refers to GB15979-2010, and the culture test is carried out by using staphylococcus aureus, and the results are shown in the following table:
TABLE 3
Therefore, compared with a commercially available product and absorbent cotton double-layer fiber, the composite fiber non-woven fabric has an antibacterial effect, has a sustained release effect on zinc oxide drugs, and avoids the reduction of the antibacterial effect of the drugs after the drugs are washed with urine; the absorbent cotton fiber/sugarcane peel/attapulgite composite fiber is added, so that the drug can be firmly adsorbed on the surface or in holes of the fiber, the drug activity is continuously exerted, the antibacterial property of the drug and the fiber generates a synergistic effect, and the antibacterial time is relatively long.
The surface layer of the disposable sanitary product is prepared by using the composite fiber non-woven fabric. The disposable sanitary article can be a paper diaper, a sanitary towel or a nursing pad and the like.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The bacteriostatic and deodorant natural fiber non-woven fabric is characterized in that natural composite fibers for preparing the non-woven fabric comprise the following components in parts by weight:
2-15 parts of absorbent cotton fiber
1-8 parts of sugarcane fiber
0.1-1 part of modified attapulgite;
the modified attapulgite adopts chitosan modified attapulgite, sugarcane fibers are bleached and softened and then are mixed with the modified attapulgite, the dimethylaminoethyl methacrylate and the citric acid to react to prepare mixed slurry, and the modified attapulgite: dimethylaminoethyl methacrylate: the weight ratio of the citric acid is 1: 0.01-0.5: 0.01-0.1, preparing a net by mixing the slurry, and drying to obtain a composite fiber layer;
the composite fiber layer and the fiber layer made of absorbent cotton fibers are superposed, and the antibacterial deodorizing natural fiber non-woven fabric is prepared by combining wet-laid web formation with a spunlace reinforcement process.
2. An antibacterial and deodorant natural fiber non-woven fabric according to claim 1, characterized in that attapulgite is pulverized to have a particle size of not more than 2cm, washed with water for 2-3 times, dried and then added with concentrated hydrochloric acid and deionized water of 20-50 times volume, stirred for 1 hour at 80 ℃, cooled and filtered, washed with water until the filtrate is neutral, dried and then added into toluene solution, ultrasonically dispersed for 15min, under the protection of nitrogen gas flow, (3-chloropropyl) trimethyl oxysilane is added while stirring, continuously refluxed and stirred for 12 hours, filtered, washed with anhydrous ethanol, dried and then added with 1% chitosan solution to ultrasonically disperse for 10min, then stirred and reacted for 6 hours at 90 ℃, washed and dried with 0.2% acetic acid solution and deionized water to obtain chitosan-modified attapulgite.
3. A bacteriostatic and deodorant natural fiber non-woven fabric according to claim 1, characterized in that the absorbent cotton fiber is treated with epoxy modified silicone oil.
4. The bacteriostatic and deodorant natural fiber non-woven fabric according to claim 1, wherein the preparation method of the sugarcane fibers comprises the following steps: segmenting and chopping fresh sugarcane according to the natural times to obtain sugarcane peel with small broken length, applying pressure to squeeze out most of water and sugar, adding distilled water, and controlling the bath ratio to be 50: boiling in a water bath at 100 ℃, changing water for several times to remove residual sugar in the sugarcane peel, taking out and cleaning the sugarcane peel, drying in a 60 ℃ oven to constant weight, obtaining the raw material of the sugarcane peel by taking 40mm as a standard section, adding distilled water and 2% of urea reagent, wherein the bath ratio is 1: 50, boiling in water bath at 100 ℃, washing the sugarcane peel after changing water for several times, putting the sugarcane peel into a 50 ℃ oven to be dried to constant weight, then adding acid liquid with the concentration of 35-40ml/L at 70-80 ℃ for boiling for 1.5-2h, adding alkali liquid with the concentration of 8-10% at 60-70 ℃ for boiling after washing with water, simultaneously carrying out ultrasonic treatment for 1.5-2h, wherein the bath ratio is 1: 30, washing with water, drying to obtain sugarcane fibers, bleaching with hydrogen peroxide, and treating with cellulase to obtain softened sugarcane fibers.
5. A bacteriostatic and deodorant natural fiber nonwoven fabric according to claim 1, wherein the obtained nonwoven fabric is loaded with a drug, the drug is applied to the surface of a roll by a roll-to-roll wet coating method, and the drug is applied to the surface layer of the nonwoven fabric while the nonwoven fabric is being rolled.
6. A bacteriostatic and deodorant natural fiber non-woven fabric according to claim 5, characterized in that the drug is an antibacterial agent or a urease inhibitor.
7. A method for preparing a bacteriostatic and deodorant natural fiber non-woven fabric according to any one of claims 1 to 6, which is characterized by comprising the following steps:
1) preparing modified attapulgite, crushing the attapulgite to a particle size of less than or equal to 2cm, washing for 2-3 times, drying, adding concentrated hydrochloric acid and deionized water with the volume of 20-50 times, stirring for 1h at 80 ℃, cooling, performing suction filtration, washing until filtrate is neutral, drying, adding the filtrate into a toluene solution, performing ultrasonic dispersion for 15min, adding (3-chloropropyl) trimethyl oxysilane while stirring under the protection of nitrogen gas flow, continuing refluxing and stirring for 12h, performing suction filtration, washing with absolute ethyl alcohol, drying, adding a 1% chitosan solution, performing ultrasonic dispersion for 10min, stirring and reacting for 6h at 90 ℃, washing with a 0.2% acetic acid solution and deionized water, and drying to obtain chitosan modified attapulgite;
2) preparing 20% aqueous solution from epoxy modified silicone oil, spraying absorbent cotton fibers, carrying out moisture regain treatment until the moisture regain of the cotton fibers reaches more than 10%, opening and carding by using a carding machine at a working roll speed of 60-75 m/min and a doffer speed of 25-45 m/min, carding to form a web, washing with deionized water, and drying to obtain an absorbent cotton fiber layer;
3) preparing sugarcane fibers, namely segmenting and chopping fresh sugarcane according to the natural times to obtain sugarcane peels with small broken lengths, applying pressure to extrude most of water and sugar, adding distilled water, and controlling the bath ratio to be 50: boiling in a water bath at 100 ℃, changing water for several times to remove residual sugar in the sugarcane peel, taking out and cleaning the sugarcane peel, drying in a 60 ℃ oven to constant weight, obtaining the raw material of the sugarcane peel by taking 40mm as a standard section, adding distilled water and 2% of urea reagent, wherein the bath ratio is 1: 50, boiling in water bath at 100 ℃, washing the sugarcane peel after changing water for several times, putting the sugarcane peel into a 50 ℃ oven to be dried to constant weight, then adding acid liquid with the concentration of 35-40ml/L at 70-80 ℃ for boiling for 1.5-2h, adding alkali liquid with the concentration of 8-10% at 60-70 ℃ for boiling after washing with water, simultaneously carrying out ultrasonic treatment for 1.5-2h, wherein the bath ratio is 1: 30, washing with water, drying to obtain sugarcane fibers, bleaching with hydrogen peroxide, and treating with cellulase to obtain softened sugarcane fibers;
4) softened sugar cane fiber and modified attapulgite are blended in a ratio of 8: 1, adding dimethylaminoethyl methacrylate, carrying out high-pressure homogeneous dispersion, adding citric acid at the pressure of 200-400mpa, reacting in a reaction kettle at the temperature of 90-110 ℃ for 1-3h, then feeding into a head box, depositing fibers on a water-permeable porous roller by using the water flow pressure to form a wet fiber web, and carrying out hot air blowing and drying to obtain a composite fiber web, wherein the modified attapulgite clay: dimethylaminoethyl methacrylate: the weight ratio of the citric acid is 1: 0.01-0.5: 0.01-0.1;
5) superposing the absorbent cotton fiber layer obtained in the step 2 with the composite fiber layer obtained in the step 4), pre-wetting/compacting/standby through a pre-wetting roller, entering a spunlace step, wherein the equipment comprises 4 spunlace regions, the spunlace pressure is respectively 10-20bar, 20-50bar, 50-90bar and 90-100bar, the spunlace regions 1 and 3 carry out spunlace from the absorbent cotton fiber layer to the composite fiber layer, the spunlace regions 2 and 4 carry out spunlace from the composite fiber layer to the absorbent cotton fiber layer until the fiber web is fully entangled, washing to be neutral, and sending the mixed fiber web into a drying room for drying to obtain the absorbent cotton fiber web with the gram weight of 30-45g/m2The nonwoven fabric of (1).
8. The method according to claim 5, wherein the drug is applied to the nonwoven fabric obtained, and the drug is applied to the surface of the roll by a winding wet coating roll method, and the drug is applied to the surface layer of the nonwoven fabric while the nonwoven fabric is wound.
9. A surface layer of a disposable sanitary product, which is characterized in that the surface layer is made of the bacteriostatic and deodorant natural fiber non-woven fabric according to claims 1 to 6.
10. A disposable sanitary article, characterized in that it comprises a cover layer according to claim 9.
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