CN113279263A - High-permeability non-woven fabric doped with natural fibers and preparation method thereof - Google Patents

High-permeability non-woven fabric doped with natural fibers and preparation method thereof Download PDF

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CN113279263A
CN113279263A CN202110530103.9A CN202110530103A CN113279263A CN 113279263 A CN113279263 A CN 113279263A CN 202110530103 A CN202110530103 A CN 202110530103A CN 113279263 A CN113279263 A CN 113279263A
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hydrophilic
woven fabric
impregnation liquid
hydrophobic
cellulose fiber
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CN113279263B (en
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张庆
张磊
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Jiangsu Hualong Non Woven Co ltd
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Jiangsu Hualong Non Woven Co ltd
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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
    • 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
    • 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
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • 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
    • D04H1/498—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 entanglement of layered webs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
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    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325—Amines
    • D06M13/332—Di- or polyamines
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    • D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
    • D06M14/02—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin
    • D06M14/04—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin of vegetal origin, e.g. cellulose or derivatives thereof
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    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
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    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
    • D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • D06M2101/06—Vegetal fibres cellulosic
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    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/11—Oleophobic properties
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Abstract

The invention discloses a high-permeability non-woven fabric doped with natural fibers and a preparation method thereof, wherein the high-permeability non-woven fabric is formed by alternately laminating and needling a plurality of single-layer hydrophilic non-woven fabrics and a plurality of single-layer hydrophobic non-woven fabrics; the single-layer hydrophilic non-woven fabric comprises, by weight, 50-60 parts of hydrophilic modified cellulose fibers, 300 parts of impurity removal impregnation liquid and 50-60 parts of bleaching liquid. The non-woven fabric prepared from the cellulose fibers has excellent air permeability and moisture absorption and better fit with the skin of a human body.

Description

High-permeability non-woven fabric doped with natural fibers and preparation method thereof
Technical Field
The invention relates to the technical field of non-woven fabric preparation, in particular to a natural fiber-doped high-permeability non-woven fabric and a preparation method thereof.
Background
Cellulose fibers, also known as rayon, are a wide variety of fibers obtained by processing plants such as wood, bamboo, sugarcane and the like, mainly from viscose fibers, acetate fibers, bamboo fibers and the like, have excellent air permeability, water absorbability and skin affinity, and are widely used in the garment design and building industries.
The non-woven fabric is prepared by needling fibers such as polyester fibers and the like, has the properties of moisture resistance, air permeability and flexibility, is widely applied to garment design, medical treatment and agricultural industry, and has the advantages that along with the continuous improvement of life of people, the demand on the non-woven fabric is continuously improved, and in the field of medical treatment and health, the requirement on the high permeability of the non-woven fabric is continuously improved, so that the invention of the natural fiber-doped high permeability non-woven fabric and the preparation method thereof is particularly important.
Disclosure of Invention
The invention aims to provide a high-permeability non-woven fabric doped with natural fibers and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a high-permeability non-woven fabric doped with natural fibers is formed by alternately laminating and needling a plurality of single-layer hydrophilic non-woven fabrics and a plurality of single-layer hydrophobic non-woven fabrics;
the single-layer hydrophilic non-woven fabric comprises the following raw materials, by weight, 50-60 parts of hydrophilic modified cellulose fibers, 300 parts of impurity removal impregnation liquid and 50-60 parts of bleaching liquid;
the single-layer hydrophobic non-woven fabric comprises the following raw materials, by weight, 50-60 parts of hydrophobic modified cellulose fibers, 300 parts of impurity removal impregnation liquid and 50-60 parts of bleaching liquid;
the impurity-removing steeping liquor is formed by mixing compound pectinase and N, N-dimethyl-1, 3-diaminopropane;
the bleaching solution is formed by mixing H2O2 and a scutcher solution.
Further, the hydrophilic modified cellulose fiber is prepared from cellulose fiber and hydrophilic modified impregnation liquid; the hydrophobic modified cellulose fiber is prepared from cellulose fibers and hydrophobic modified impregnation liquid.
Further, the hydrophilic modification impregnation liquid comprises the following raw materials, by weight, 110 parts of side chain hydrogen-containing silicone oil, 50-52 parts of allyl epoxy polyether, 0.01-0.02 part of chloroplatinic acid, 50-55 parts of amino-terminated polyethylene glycol and 5-6 parts of glycidylated cage-type silsesquioxane;
the hydrophobic modified impregnation liquid is prepared from 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier;
the molar ratio of the 2- (perfluorobutyl) ethyl acrylate to the octadecyl acrylate, the glycidyl methacrylate and the butyl acrylate is 2:1:0.1:0.5, and the total amount of the compound emulsifier is 6 percent of the total mass of the monomers;
the compound emulsifier is prepared from a cationic emulsifier cetyl trimethyl ammonium bromide, a non-ionic emulsifier polyoxyethylene lauryl ether, dodecyl mercaptan and 2, 2' -azo bis (2-methyl propyl amidine) dihydrochloride;
the molar ratio of the cationic emulsifier cetyl trimethyl ammonium bromide to the nonionic emulsifier polyoxyethylene lauryl ether is 1:4, the mass ratio of the auxiliary emulsifier dodecyl mercaptan to the compound emulsifier is 1:3, and the dosage of the 2, 2' -azo-bis (2-methyl propyl amidine) dihydrochloride is 0.5% of the total mass of the monomers.
A preparation method of high-permeability non-woven fabric doped with natural fibers comprises the following steps,
s1, pretreatment of cellulose fibers:
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: mixing the H2O2 solution with the scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution for soaking;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution;
s2, modification of cellulose fiber:
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating, adding chloroplatinic acid, and preserving heat to obtain side chain polyether epoxy silicone oil;
cooling the obtained side chain polyether epoxy silicone oil, adding amino-terminated polyethylene glycol and glycidylation cage type silsesquioxane, stirring uniformly, and heating to obtain hydrophilic modification impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, stirring uniformly, and heating to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fibers in the hydrophilic modified impregnation liquid, heating, drying and curing to obtain hydrophilic modified cellulose fibers;
(4) hydrophobic modification of cellulose fibers: soaking cellulose fibers in a hydrophobic modified impregnation solution, heating, drying, washing, heating and curing to obtain hydrophobic modified cellulose fibers;
s3, preparation of non-woven fabric:
(1) blending the obtained hydrophilic modified cellulose fiber and natural fiber to prepare a single-layer hydrophilic non-woven fabric;
(2) blending the obtained hydrophobic modified cellulose fiber and natural fiber to prepare single-layer hydrophobic non-woven fabric;
(3) and (3) alternately laminating the obtained single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric, and preparing the high-permeability non-woven fabric by using a needling solidification mode.
The hydrophilic performance of the hydrophilic modified cellulose fiber is modified in the actual operation process by changing the grafting rate, the hydrophilic modified cellulose fiber and the hydrophobic modified cellulose fiber are cured by using a needling curing method, the hydrophilic modified cellulose fiber and the hydrophobic modified cellulose fiber are sequentially arranged, the hydrophilicity of a single-layer hydrophilic non-woven fabric is sequentially reduced from bottom to top, liquid drops can be enabled to be dripped into the quick-permeation non-woven fabric, the lower-layer hydrophilic cellulose non-woven fabric has better moisture absorption than the upper-layer hydrophilic non-woven fabric, and a downward drawing force is generated on water under the synergistic effect of gravity, capillary effect and hydrophilic effect, so that the water flows to the lower layer, the purposes of moisture absorption and quick permeation are achieved, and the lower-layer non-woven fabric can not reflow to the upper layer due to the fact that the hydrophobic cellulose non-woven fabric is arranged between the two layers of hydrophilic non-woven fabrics, and the dryness of the upper layer is kept.
Further, the specific steps of step S1 are as follows,
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: mixing the H2O2 solution with the scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution at 54-56 deg.C for 50-70 min;
the cellulose fiber raw material contains a large amount of impurities, the impurity removal steeping liquor prepared by mixing the compound pectinase and the N, N-dimethyl-1, 3-diaminopropane is adopted in the method, the compound pectinase can remove the impurities in the cellulose fiber, and the N, N-dimethyl-1, 3-diaminopropane is used as a fiber treating agent, so that the influence of the impurities in the cellulose on subsequent modification can be avoided.
(4) Bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution at 89-91 ℃ for 39-41 ℃.
This application uses H2O2 to bleach the cellulose fibre, because H2O2 has certain corrosivity, consequently need control H2O 2's concentration, consequently this application has injectd its concentration, it is 30% to inject its concentration, this application has added the scutcher on the basis of adding H2O2, the bleaching effect of bleaching liquor can be improved in the addition of scutcher for the product is more pleasing to the eye.
Further, the specific steps of step S2 are as follows,
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating to 79-81 ℃, adding chloroplatinic acid, and preserving heat at 79-81 ℃ for 4 hours to obtain side chain polyether epoxy silicone oil;
secondly, cooling the obtained side chain polyether epoxy silicone oil to 39-41 ℃, adding amino-terminated polyethylene glycol and glycidylation cage-type silsesquioxane, uniformly stirring, heating to 84-86 ℃, and reacting for 10 hours to obtain hydrophilic modified impregnation liquid;
according to the method, hydrogen-containing silicone oil is used as a raw material, allyl epoxy polyether and chloroplatinic acid are added, so that side chain polyether epoxy silicone oil is obtained, the obtained side chain polyether epoxy silicone oil further reacts with added double-end amino polyethylene glycol and glycidylation cage type silsesquioxane, and the hydrophilic modified impregnation liquid is prepared. The obtained hydrophilic modified impregnation liquid contains a large amount of hydrophilic monomers, the silicone oil structure in the hydrophilic monomers contains a hydrophilic EO chain segment with a high proportion, when hydrophilic molecules are arranged on the fiber, EO chain segment components are exposed on the surface of the fiber, the hydrophilicity of the fiber is improved, meanwhile, the epoxy group can open a ring and perform a crosslinking reaction with the cellulose fiber, and the durability of the fabric after arrangement is improved.
(2) Preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, uniformly stirring, and heating at 70-72 ℃ for 2.4-2.6h to obtain a hydrophobic modified impregnation liquid;
the preparation method uses 2- (perfluorobutyl) ethyl acrylate as a raw material, glycidyl methacrylate, butyl acrylate, phenothiazine and isopropyl tri (isostearyl) titanate are added to prepare the hydrophobic modified impregnation liquid, the hydrophobic impregnation liquid contains a large amount of hydrophobic monomers, C-F bonds with larger bond energy exist in fluorine-containing molecular chains in the hydrophobic monomers, the free energy and the critical surface tension of the fiber surface can be obviously reduced, and after the hydrophobic modified impregnation liquid is subjected to grafting reaction with cellulose fibers, the highly hydrophobic cellulose fibers can be prepared, so that the original style, hand feeling and service performance can be kept while the excellent water and oil repellent effect is achieved.
(3) Hydrophilic modification of cellulose fibers: soaking cellulose fiber in hydrophilic modified impregnation liquid, heating at 59-62 ℃ for 1-1.2h, drying at 80-82 ℃, and curing at 163-165 ℃ to obtain hydrophilic modified cellulose fiber;
(4) hydrophobic modification of cellulose fibers: soaking the cellulose fiber in a hydrophobic modified impregnation liquid, heating at 59-62 ℃ for 1-1.2h, drying at 80-82 ℃ for 1-2h, washing, heating and curing at 163-165 ℃ to obtain the hydrophobic modified cellulose fiber.
According to the method, pretreatment is needed before modification of the cellulose fibers, impurities in the cellulose fibers are removed, the method of adding the composite pectinase and the surfactant is adopted for removing, N, N-dimethyl-1, 3-diaminopropane is selected and used, and the N, N-dimethyl-1, 3-diaminopropane can be used as a fiber treating agent to increase the softness of products and improve the durability of non-woven fabrics. According to the method, the impregnation method is adopted in the impurity removal and modification processes of the cellulose fibers, due to the self characteristics of the cellulose fibers, impurity removal impregnation liquid residues exist in the cellulose fibers after impurity removal, and the N, N-dimethyl-1, 3-diaminopropane has certain corrosivity, so that butyl acrylate is added at a destination when the hydrophobic modified impregnation liquid is prepared, the butyl acrylate can react with 2- (perfluorobutyl) ethyl acrylate to form a hydrophobic monomer, when the pretreated cellulose fibers are soaked in the hydrophobic modified impregnation liquid, the generated hydrophobic monomer can modify the cellulose fibers, and partial butyl acrylate can react with the residual N, N-dimethyl-1, 3-diaminopropane to further achieve the purpose of removing the residues. Part of butyl acrylate reacts with residual N, N-dimethyl-1, 3-diaminopropane to obtain amide compounds, and the amide compounds can improve the cohesiveness and the colorability of cellulose fibers to a certain extent, and provide convenience for subsequent processing.
Compared with the prior art, the invention has the following beneficial effects: the cellulose fiber is a fiber material prepared by using plants as raw materials through chemical preparation, the non-woven fabric prepared by using the cellulose fiber has excellent air permeability and hygroscopicity, and has better fit with the skin of a human body.
Natural fibre is the fibre material who directly obtains from plant and animal, has certain hygroscopicity and antistatic properties, and this application uses natural fibre and hydrophilic fibre to carry out the blending, and then the better hydrophilic performance of the hydrophilic non-woven fabrics of preparation monolayer to can improve hydrophilic fibre pliability, further improve close skin comfort.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A high-permeability non-woven fabric doped with natural fibers is formed by alternately laminating and needling 3 single-layer hydrophilic non-woven fabrics and 3 single-layer hydrophobic non-woven fabrics;
the single-layer hydrophilic non-woven fabric is prepared from 50 parts by weight of hydrophilic modified cellulose fibers, 250 parts by weight of impurity removal impregnation liquid and 50 parts by weight of bleaching liquid;
the single-layer hydrophobic non-woven fabric is prepared from 50 parts by weight of hydrophobic modified cellulose fibers, 250 parts by weight of impurity removal impregnation liquid and 50 parts by weight of bleaching liquid;
the impurity-removing steeping liquor is formed by mixing compound pectinase and N, N-dimethyl-1, 3-diaminopropane;
the bleaching liquor is composed of H2O2And mixing with a solution of a scutcher.
The hydrophilic modified cellulose fiber is prepared from cellulose fiber and hydrophilic modified impregnation liquid; the hydrophobic modified cellulose fiber is prepared from cellulose fiber and hydrophobic modified impregnation liquid;
the hydrophilic modified impregnation liquid comprises the following raw materials, by weight, 100 parts of side chain hydrogen-containing silicone oil, 50 parts of allyl epoxy polyether, 0.01 part of chloroplatinic acid, 50 parts of amino-terminated polyethylene glycol and 5 parts of glycidylated cage-type silsesquioxane;
the hydrophobic modified impregnation liquid is prepared from 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier;
the molar ratio of the 2- (perfluorobutyl) ethyl acrylate to the octadecyl acrylate, the glycidyl methacrylate and the butyl acrylate is 2:1:0.1:0.5, and the total amount of the compound emulsifier is 6 percent of the total mass of the monomers;
the compound emulsifier is prepared from a cationic emulsifier cetyl trimethyl ammonium bromide, a non-ionic emulsifier polyoxyethylene lauryl ether, dodecyl mercaptan and 2, 2' -azo bis (2-methyl propyl amidine) dihydrochloride;
the molar ratio of the cationic emulsifier cetyl trimethyl ammonium bromide to the nonionic emulsifier polyoxyethylene lauryl ether is 1:4, the mass ratio of the auxiliary emulsifier dodecyl mercaptan to the compound emulsifier is 1:3, and the dosage of the 2, 2' -azo-bis (2-methyl propyl amidine) dihydrochloride is 0.5% of the total mass of the monomers.
A preparation method of high-permeability non-woven fabric doped with natural fibers comprises the following steps,
s1, pretreatment of cellulose fibers:
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: h is to be2O2Mixing the solution with a scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution at 54 deg.C for 50 min;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution at 89 ℃ for 39 ℃;
s2, modification of cellulose fiber:
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating to 79 ℃, adding chloroplatinic acid, and keeping the temperature at 79 ℃ for 4 hours to obtain side chain polyether epoxy silicone oil;
cooling the obtained side chain polyether epoxy silicone oil to 39 ℃, adding amino-terminated polyethylene glycol and glycidylation cage-type silsesquioxane, uniformly stirring, heating to 84 ℃, and reacting for 10 hours to obtain hydrophilic modified impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, uniformly stirring, and heating at 70 ℃ for 2.4 hours to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fibers in hydrophilic modified impregnation liquid, heating at 59 ℃, soaking for 1h, drying at 80 ℃, and curing at 163 ℃ to obtain hydrophilic modified cellulose fibers;
(4) hydrophobic modification of cellulose fibers: soaking cellulose fibers in a hydrophobic modified impregnation liquid, heating at 59 ℃ for 1h, drying at 80 ℃ for 1h, washing, heating and curing at 163 ℃ to obtain hydrophobic modified cellulose fibers;
s3, preparation of non-woven fabric:
(1) blending the obtained hydrophilic modified cellulose fiber and natural fiber to prepare a single-layer hydrophilic non-woven fabric;
(2) blending the obtained hydrophobic modified cellulose fiber and natural fiber to prepare single-layer hydrophobic non-woven fabric;
(3) and (3) alternately laminating the obtained single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric, and preparing the high-permeability non-woven fabric by using a needling solidification mode.
Example 2
A high-permeability non-woven fabric doped with natural fibers is formed by alternately laminating and needling 3 single-layer hydrophilic non-woven fabrics and 3 single-layer hydrophobic non-woven fabrics;
the single-layer hydrophilic non-woven fabric is prepared from 55 parts by weight of hydrophilic modified cellulose fibers, 270 parts by weight of impurity removal impregnation liquid and 55 parts by weight of bleaching liquid;
the single-layer hydrophobic non-woven fabric is prepared from 55 parts by weight of hydrophobic modified cellulose fibers, 27 parts by weight of impurity removal impregnation liquid and 55 parts by weight of bleaching liquid;
the impurity-removing steeping liquor is formed by mixing compound pectinase and N, N-dimethyl-1, 3-diaminopropane;
the bleaching liquor is composed of H2O2And mixing with a solution of a scutcher.
The modified cellulose fiber is prepared from cellulose fiber, hydrophilic modified impregnation liquid and hydrophobic modified impregnation liquid.
The hydrophilic modified impregnation liquid comprises the following raw materials, by weight, 105 parts of side chain hydrogen-containing silicone oil, 51 parts of allyl epoxy polyether, 0.015 part of chloroplatinic acid, 53 parts of amino-terminated polyethylene glycol and 5.5 parts of glycidylated cage-type silsesquioxane;
the hydrophobic modified impregnation liquid is prepared from 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier;
the molar ratio of the 2- (perfluorobutyl) ethyl acrylate to the octadecyl acrylate, the glycidyl methacrylate and the butyl acrylate is 2:1:0.1:0.5, and the total dosage of the prepared emulsifier is 6 percent of the total mass of the monomers;
the compound emulsifier is prepared from a cationic emulsifier cetyl trimethyl ammonium bromide, a non-ionic emulsifier polyoxyethylene lauryl ether, dodecyl mercaptan and 2, 2' -azo bis (2-methyl propyl amidine) dihydrochloride;
the molar ratio of the cationic emulsifier cetyl trimethyl ammonium bromide to the nonionic emulsifier polyoxyethylene lauryl ether is 1:4, the mass ratio of the auxiliary emulsifier dodecyl mercaptan to the compound emulsifier is 1:3, and the dosage of the 2, 2' -azo-bis (2-methyl propyl amidine) dihydrochloride is 0.5% of the total mass of the monomers.
A preparation method of high-permeability non-woven fabric doped with natural fibers comprises the following steps,
s1, pretreatment of cellulose fibers:
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: h is to be2O2Mixing the solution with a scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution at 55 deg.C for 60 min;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution at 90 ℃ for 40 ℃;
s2, modification of cellulose fiber:
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating to 80 ℃, adding chloroplatinic acid, and keeping the temperature at 80 ℃ for 4 hours to obtain side chain polyether epoxy silicone oil;
cooling the obtained side chain polyether epoxy silicone oil to 40 ℃, adding amino-terminated polyethylene glycol and glycidylation cage-type silsesquioxane, stirring uniformly, heating to 85 ℃, and reacting for 10 hours to obtain hydrophilic modified impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, uniformly stirring, and heating at 71 ℃ for 2.5 hours to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fiber in hydrophilic modified impregnation liquid, heating at 60 ℃, soaking for 1.1h, drying at 81 ℃, and curing at 164 ℃ to obtain hydrophilic modified cellulose fiber;
(4) hydrophobic modification of cellulose fibers: soaking cellulose fibers in a hydrophobic modified impregnation liquid, heating at 60 ℃, soaking for 1.1h, drying at 81 ℃ for 1.5h, washing, heating and curing at 164 ℃ to obtain hydrophobic modified cellulose fibers;
s3, preparation of non-woven fabric:
(1) blending the obtained hydrophilic modified cellulose fiber and natural fiber to prepare a single-layer hydrophilic non-woven fabric;
(2) blending the obtained hydrophobic modified cellulose fiber and natural fiber to prepare single-layer hydrophobic non-woven fabric;
(3) and (3) alternately laminating the obtained single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric, and preparing the high-permeability non-woven fabric by using a needling solidification mode.
Example 3
A high-permeability non-woven fabric doped with natural fibers is formed by alternately laminating and needling 3 single-layer hydrophilic non-woven fabrics and 3 single-layer hydrophobic non-woven fabrics;
the single-layer hydrophilic non-woven fabric is prepared from 60 parts by weight of hydrophilic modified cellulose fiber, 300 parts by weight of impurity removal impregnation liquid and 60 parts by weight of bleaching liquid;
the single-layer hydrophobic non-woven fabric is prepared from 60 parts by weight of hydrophobic modified cellulose fiber, 300 parts by weight of impurity-removing impregnation liquid and 60 parts by weight of bleaching liquid;
the impurity-removing steeping liquor is formed by mixing compound pectinase and N, N-dimethyl-1, 3-diaminopropane;
the bleaching liquor is composed of H2O2And mixing with a solution of a scutcher.
The modified cellulose fiber is prepared from cellulose fiber, hydrophilic modified impregnation liquid and hydrophobic modified impregnation liquid.
The hydrophilic modified impregnation liquid comprises the following raw materials, by weight, 110 parts of side chain hydrogen-containing silicone oil, 52 parts of allyl epoxy polyether, 0.02 part of chloroplatinic acid, 55 parts of amino-terminated polyethylene glycol and 6 parts of glycidylated cage-type silsesquioxane;
the hydrophobic modified impregnation liquid is prepared from 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier;
the molar ratio of the 2- (perfluorobutyl) ethyl acrylate to the octadecyl acrylate, the glycidyl methacrylate and the butyl acrylate is 2:1:0.1:0.5, and the total dosage of the prepared emulsifier is 6 percent of the total mass of the monomers;
the compound emulsifier is prepared from a cationic emulsifier cetyl trimethyl ammonium bromide, a non-ionic emulsifier polyoxyethylene lauryl ether, dodecyl mercaptan and 2, 2' -azo bis (2-methyl propyl amidine) dihydrochloride;
the molar ratio of the cationic emulsifier cetyl trimethyl ammonium bromide to the nonionic emulsifier polyoxyethylene lauryl ether is 1:4, the mass ratio of the auxiliary emulsifier dodecyl mercaptan to the compound emulsifier is 1:3, and the dosage of the 2, 2' -azo-bis (2-methyl propyl amidine) dihydrochloride is 0.5% of the total mass of the monomers.
A preparation method of high-permeability non-woven fabric doped with natural fibers comprises the following steps,
s1, pretreatment of cellulose fibers:
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: h is to be2O2Mixing the solution with a scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution at 56 deg.C for 70 min;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution at 91 ℃ for 41 ℃;
s2, modification of cellulose fiber:
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating to 79-81 ℃, adding chloroplatinic acid, and keeping the temperature at 81 ℃ for 4 hours to obtain side chain polyether epoxy silicone oil;
cooling the obtained side chain polyether epoxy silicone oil to 41 ℃, adding amino-terminated polyethylene glycol and glycidylation cage-type silsesquioxane, stirring uniformly, heating to 86 ℃, and reacting for 10 hours to obtain hydrophilic modified impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, uniformly stirring, and heating at 72 ℃ for 2.6 hours to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fiber in hydrophilic modified impregnation liquid, heating at 62 ℃, soaking for 1.2h, drying at 82 ℃, and curing at 165 ℃ to obtain hydrophilic modified cellulose fiber;
(4) hydrophobic modification of cellulose fibers: soaking cellulose fibers in a hydrophobic modified impregnation liquid, heating at 62 ℃, soaking for 1.2h, drying at 82 ℃ for 2h, washing, heating and curing at 165 ℃ to obtain hydrophobic modified cellulose fibers;
s3, preparation of non-woven fabric:
(1) blending the obtained hydrophilic modified cellulose fiber and natural fiber to prepare a single-layer hydrophilic non-woven fabric;
(2) blending the obtained hydrophobic modified cellulose fiber and natural fiber to prepare single-layer hydrophobic non-woven fabric;
(3) and (3) alternately laminating the obtained single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric, and preparing the high-permeability non-woven fabric by using a needling solidification mode.
Comparative example 1
A high-permeability non-woven fabric doped with natural fibers is formed by alternately laminating and needling 3 single-layer hydrophilic non-woven fabrics and 3 single-layer hydrophobic non-woven fabrics;
the single-layer hydrophilic non-woven fabric is prepared from 60 parts by weight of hydrophilic modified cellulose fiber, 300 parts by weight of impurity removal impregnation liquid and 60 parts by weight of bleaching liquid;
the single-layer hydrophobic non-woven fabric is prepared from 60 parts by weight of hydrophobic modified cellulose fiber, 300 parts by weight of impurity-removing impregnation liquid and 60 parts by weight of bleaching liquid;
the impurity-removing steeping liquor is formed by mixing compound pectinase and sodium alkyl benzene sulfonate;
the bleaching liquor is composed of H2O2And mixing with a solution of a scutcher.
The modified cellulose fiber is prepared from cellulose fiber, hydrophilic modified impregnation liquid and hydrophobic modified impregnation liquid.
The hydrophilic modified impregnation liquid comprises the following raw materials, by weight, 110 parts of side chain hydrogen-containing silicone oil, 52 parts of allyl epoxy polyether, 0.02 part of chloroplatinic acid, 55 parts of amino-terminated polyethylene glycol and 6 parts of glycidylated cage-type silsesquioxane;
the hydrophobic modified impregnation liquid is prepared from 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier;
the molar ratio of the 2- (perfluorobutyl) ethyl acrylate to the octadecyl acrylate, the glycidyl methacrylate and the butyl acrylate is 2:1:0.1:0.5, and the total dosage of the prepared emulsifier is 6 percent of the total mass of the monomers;
the compound emulsifier is prepared from a cationic emulsifier cetyl trimethyl ammonium bromide, a non-ionic emulsifier polyoxyethylene lauryl ether, dodecyl mercaptan and 2, 2' -azo bis (2-methyl propyl amidine) dihydrochloride;
the molar ratio of the cationic emulsifier cetyl trimethyl ammonium bromide to the nonionic emulsifier polyoxyethylene lauryl ether is 1:4, the mass ratio of the auxiliary emulsifier dodecyl mercaptan to the compound emulsifier is 1:3, and the dosage of the 2, 2' -azo-bis (2-methyl propyl amidine) dihydrochloride is 0.5% of the total mass of the monomers.
A preparation method of high-permeability non-woven fabric doped with natural fibers comprises the following steps,
s1, pretreatment of cellulose fibers:
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and sodium alkyl benzene sulfonate, and uniformly stirring to obtain an impurity-removed steeping liquor;
(2) preparation of bleaching solution: h is to be2O2Mixing the solution with a scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution at 56 deg.C for 70 min;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution at 91 ℃ for 41 ℃;
s2, modification of cellulose fiber:
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating to 79-81 ℃, adding chloroplatinic acid, and keeping the temperature at 81 ℃ for 4 hours to obtain side chain polyether epoxy silicone oil;
cooling the obtained side chain polyether epoxy silicone oil to 41 ℃, adding amino-terminated polyethylene glycol and glycidylation cage-type silsesquioxane, stirring uniformly, heating to 86 ℃, and reacting for 10 hours to obtain hydrophilic modified impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, uniformly stirring, and heating at 72 ℃ for 2.6 hours to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fiber in hydrophilic modified impregnation liquid, heating at 62 ℃, soaking for 1.2h, drying at 82 ℃, and curing at 165 ℃ to obtain hydrophilic modified cellulose fiber;
(4) hydrophobic modification of cellulose fibers: soaking cellulose fibers in a hydrophobic modified impregnation liquid, heating at 62 ℃, soaking for 1.2h, drying at 82 ℃ for 2h, washing, heating and curing at 165 ℃ to obtain hydrophobic modified cellulose fibers;
s3, preparation of non-woven fabric:
(1) blending the obtained hydrophilic modified cellulose fiber and natural fiber to prepare a single-layer hydrophilic non-woven fabric;
(2) blending the obtained hydrophobic modified cellulose fiber and natural fiber to prepare single-layer hydrophobic non-woven fabric;
(3) and (3) alternately laminating the obtained single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric, and preparing the high-permeability non-woven fabric by using a needling solidification mode.
Comparative example 2
A high-permeability non-woven fabric doped with natural fibers is formed by needling 3 single-layer hydrophilic non-woven fabrics and 3 single-layer hydrophobic non-woven fabrics;
the single-layer hydrophilic non-woven fabric is prepared from 60 parts by weight of hydrophilic modified cellulose fiber, 300 parts by weight of impurity removal impregnation liquid and 60 parts by weight of bleaching liquid;
the single-layer hydrophobic non-woven fabric is prepared from 60 parts by weight of hydrophobic modified cellulose fiber, 300 parts by weight of impurity-removing impregnation liquid and 60 parts by weight of bleaching liquid;
the impurity-removing steeping liquor is formed by mixing compound pectinase and N, N-dimethyl-1, 3-diaminopropane;
the bleaching liquor is composed of H2O2And mixing with a solution of a scutcher.
The modified cellulose fiber is prepared from cellulose fiber, hydrophilic modified impregnation liquid and hydrophobic modified impregnation liquid.
The hydrophilic modified impregnation liquid comprises the following raw materials, by weight, 110 parts of side chain hydrogen-containing silicone oil, 52 parts of allyl epoxy polyether, 0.02 part of chloroplatinic acid, 55 parts of amino-terminated polyethylene glycol and 6 parts of glycidylated cage-type silsesquioxane;
the hydrophobic modified impregnation liquid is prepared from 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier;
the molar ratio of the 2- (perfluorobutyl) ethyl acrylate to the octadecyl acrylate, the glycidyl methacrylate and the butyl acrylate is 2:1:0.1:0.5, and the total dosage of the prepared emulsifier is 6 percent of the total mass of the monomers;
the compound emulsifier is prepared from a cationic emulsifier cetyl trimethyl ammonium bromide, a non-ionic emulsifier polyoxyethylene lauryl ether, dodecyl mercaptan and 2, 2' -azo bis (2-methyl propyl amidine) dihydrochloride;
the molar ratio of the cationic emulsifier cetyl trimethyl ammonium bromide to the nonionic emulsifier polyoxyethylene lauryl ether is 1:4, the mass ratio of the auxiliary emulsifier dodecyl mercaptan to the compound emulsifier is 1:3, and the dosage of the 2, 2' -azo-bis (2-methyl propyl amidine) dihydrochloride is 0.5% of the total mass of the monomers.
A preparation method of high-permeability non-woven fabric doped with natural fibers comprises the following steps,
s1, pretreatment of cellulose fibers:
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: h is to be2O2Mixing the solution with a scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution at 56 deg.C for 70 min;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution at 91 ℃ for 41 ℃;
s2, modification of cellulose fiber:
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating to 79-81 ℃, adding chloroplatinic acid, and keeping the temperature at 81 ℃ for 4 hours to obtain side chain polyether epoxy silicone oil;
cooling the obtained side chain polyether epoxy silicone oil to 41 ℃, adding amino-terminated polyethylene glycol and glycidylation cage-type silsesquioxane, stirring uniformly, heating to 86 ℃, and reacting for 10 hours to obtain hydrophilic modified impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, uniformly stirring, and heating at 72 ℃ for 2.6 hours to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fiber in hydrophilic modified impregnation liquid, heating at 62 ℃, soaking for 1.2h, drying at 82 ℃, and curing at 165 ℃ to obtain hydrophilic modified cellulose fiber;
(4) hydrophobic modification of cellulose fibers: soaking cellulose fibers in a hydrophobic modified impregnation liquid, heating at 62 ℃, soaking for 1.2h, drying at 82 ℃ for 2h, washing, heating and curing at 165 ℃ to obtain hydrophobic modified cellulose fibers;
s3, preparation of non-woven fabric:
(1) blending the obtained hydrophilic modified cellulose fiber and natural fiber to prepare a single-layer hydrophilic non-woven fabric;
(2) blending the obtained hydrophobic modified cellulose fiber and natural fiber to prepare single-layer hydrophobic non-woven fabric;
(3) and preparing the obtained single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric into the high-permeability non-woven fabric in a needling and curing mode.
Experiment of
Comparative examples 1, 2 and 3 were set up by using example 3 as a control, in which comparative example 1 used sodium alkylbenzenesulfonate instead of N, N-dimethyl-1, 3-diaminopropane, and comparative example 2 performed a control experiment without using a structure in which a single hydrophilic nonwoven fabric and a single hydrophobic nonwoven fabric were alternately laminated.
The water penetration time was measured electrometrically and recorded for examples 1, 2, 3, 1, 2, and the results were as follows,
experimental group Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2
Penetration time(s) 0.93 0.92 0.94 0.92 1.57
Watch 1
The peel strength property test was performed on example 1, example 2, example 3, and comparative example 1, and the results were as follows,
experimental group Example 1 Example 2 Example 3 Comparative example 1
Peel strength (N/cm) 9.2 9.4 9.3 8.2
Watch two
The environmental protection performance tests of example 1, example 2 and example 3 were carried out, and the results are as follows,
experimental group Volatilization of benzene Volatilization of xylene Volatilization of toluene Formaldehyde testing
Example 1 Not detected out Not detected out Not detected out Not detected out
Example 2 Not detected out Not detected out Not detected out Not detected out
Example 3 Not detected out Not detected out Not detected out Not detected out
Watch III
The use of sodium alkylbenzenesulfonate in comparative example 1 instead of N, N-dimethyl-1, 3-diaminopropane results in poorer peel strength in comparative example 1 than in examples 1, 2 and 3 because N, N-dimethyl-1, 3-diaminopropane used in examples 1, 2 and 3 acts with butyl acrylate to enhance tackiness and thus improve the peel strength of the product.
The reason why the penetration time of the comparative example 2 is poorer than that of the examples 1, 2 and 3 because the structures of the examples 1, 2 and 3 do not adopt the structure in which the single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric are alternately laminated is that the water generates a downward drawing force to water under the synergistic action of gravity, capillary effect and hydrophilic effect to enable the water to flow to the next layer so as to achieve the purposes of moisture absorption and rapid penetration, and because the hydrophobic cellulose non-woven fabric is arranged between the two layers of hydrophilic non-woven fabrics, the water absorbed by the lower non-woven fabric does not flow back to the upper layer, so that the dryness of the upper layer is kept.
The products of example 1, example 2 and example 3 prepared by using the raw materials and the process of the application have no detected volatilization of benzene, xylene, toluene and formaldehyde, and have low harm to human bodies and environment.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A high-permeability non-woven fabric doped with natural fibers is characterized in that: the high-permeability non-woven fabric is formed by alternately laminating and needling a plurality of single-layer hydrophilic non-woven fabrics and a plurality of single-layer hydrophobic non-woven fabrics;
the single-layer hydrophilic non-woven fabric comprises the following raw materials, by weight, 50-60 parts of hydrophilic modified cellulose fibers, 300 parts of impurity removal impregnation liquid and 50-60 parts of bleaching liquid;
the single-layer hydrophobic non-woven fabric comprises the following raw materials, by weight, 50-60 parts of hydrophobic modified cellulose fibers, 300 parts of impurity removal impregnation liquid and 50-60 parts of bleaching liquid;
the impurity-removing steeping liquor is formed by mixing compound pectinase and N, N-dimethyl-1, 3-diaminopropane;
the bleaching liquor is composed of H2O2And mixing with a solution of a scutcher.
2. The high permeability nonwoven fabric doped with natural fiber according to claim 1, wherein: the hydrophilic modified cellulose fiber is prepared from cellulose fiber and hydrophilic modified impregnation liquid; the hydrophobic modified cellulose fiber is prepared from cellulose fibers and hydrophobic modified impregnation liquid.
3. The high permeability nonwoven fabric doped with natural fiber according to claim 1, wherein: the hydrophilic modified impregnation liquid comprises the following raw materials, by weight, 110 parts of side chain hydrogen-containing silicone oil, 50-52 parts of allyl epoxy polyether, 0.01-0.02 part of chloroplatinic acid, 50-55 parts of amino-terminated polyethylene glycol and 5-6 parts of glycidylated cage-type silsesquioxane;
the hydrophobic modified impregnation liquid is prepared from 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier;
the molar ratio of the 2- (perfluorobutyl) ethyl acrylate to the octadecyl acrylate, the glycidyl methacrylate and the butyl acrylate is 2:1:0.1:0.5, and the total amount of the compound emulsifier is 6 percent of the total mass of the monomers;
the compound emulsifier is prepared from a cationic emulsifier cetyl trimethyl ammonium bromide, a non-ionic emulsifier polyoxyethylene lauryl ether, dodecyl mercaptan and 2, 2' -azo bis (2-methyl propyl amidine) dihydrochloride;
the molar ratio of the cationic emulsifier cetyl trimethyl ammonium bromide to the nonionic emulsifier polyoxyethylene lauryl ether is 1:4, the mass ratio of the auxiliary emulsifier dodecyl mercaptan to the compound emulsifier is 1:3, and the dosage of the 2, 2' -azo-bis (2-methyl propyl amidine) dihydrochloride is 0.5% of the total mass of the monomers.
4. A preparation method of high-permeability non-woven fabric doped with natural fibers is characterized by comprising the following steps: the steps are as follows,
s1, pretreatment of cellulose fibers:
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: h is to be2O2Mixing the solution with a scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution for soaking;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution;
s2, modification of cellulose fiber:
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating, adding chloroplatinic acid, and preserving heat to obtain side chain polyether epoxy silicone oil;
cooling the obtained side chain polyether epoxy silicone oil, adding amino-terminated polyethylene glycol and glycidylation cage type silsesquioxane, stirring uniformly, and heating to obtain hydrophilic modification impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, stirring uniformly, and heating to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fibers in the hydrophilic modified impregnation liquid, heating, drying and curing to obtain hydrophilic modified cellulose fibers;
(4) hydrophobic modification of cellulose fibers: soaking cellulose fibers in a hydrophobic modified impregnation solution, heating, drying, washing, heating and curing to obtain hydrophobic modified cellulose fibers;
s3, preparation of non-woven fabric:
(1) blending the obtained hydrophilic modified cellulose fiber and natural fiber to prepare a single-layer hydrophilic non-woven fabric;
(2) blending the obtained hydrophobic modified cellulose fiber and natural fiber to prepare single-layer hydrophobic non-woven fabric;
(3) and (3) alternately laminating the obtained single-layer hydrophilic non-woven fabric and the single-layer hydrophobic non-woven fabric, and preparing the high-permeability non-woven fabric by using a needling solidification mode.
5. The method for preparing the natural fiber doped high permeability non-woven fabric according to claim 4, wherein the method comprises the following steps: the specific steps of step S1 are as follows,
(1) preparing an impurity-removed steeping liquor: mixing the compound pectinase and N, N-dimethyl-1, 3-diaminopropane, and uniformly stirring to obtain an impurity-removed impregnation solution;
(2) preparation of bleaching solution: h is to be2O2Mixing the solution with a scutcher solution, and uniformly stirring to obtain a bleaching solution;
(3) removing impurities from cellulose fibers: soaking cellulose fiber in the obtained impurity-removed soaking solution at 54-56 deg.C for 50-70 min;
(4) bleaching of cellulose fiber: soaking the cellulose fiber after impurity removal in the obtained bleaching solution at 89-91 ℃ for 39-41 ℃.
6. The method for preparing the natural fiber doped high permeability non-woven fabric according to claim 4, wherein the method comprises the following steps: the specific steps of step S2 are as follows,
(1) preparing a hydrophilic modified impregnation liquid:
firstly, mixing hydrogen-containing silicone oil and allyl epoxy polyether, adding a solvent, uniformly stirring, then heating to 79-81 ℃, adding chloroplatinic acid, and preserving heat at 79-81 ℃ for 4 hours to obtain side chain polyether epoxy silicone oil;
secondly, cooling the obtained side chain polyether epoxy silicone oil to 39-41 ℃, adding amino-terminated polyethylene glycol and glycidylation cage-type silsesquioxane, uniformly stirring, heating to 84-86 ℃, and reacting for 10 hours to obtain hydrophilic modified impregnation liquid;
(2) preparation of the hydrophobic modified impregnation liquid: mixing 2- (perfluorobutyl) ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, butyl acrylate, phenothiazine, isopropyl tri (isostearyl) titanate and a compound emulsifier, uniformly stirring, and heating at 70-72 ℃ for 2.4-2.6h to obtain a hydrophobic modified impregnation liquid;
(3) hydrophilic modification of cellulose fibers: soaking cellulose fiber in hydrophilic modified impregnation liquid, heating at 59-62 ℃ for 1-1.2h, drying at 80-82 ℃, and curing at 163-165 ℃ to obtain hydrophilic modified cellulose fiber;
(4) hydrophobic modification of cellulose fibers: soaking the cellulose fiber in a hydrophobic modified impregnation liquid, heating at 59-62 ℃ for 1-1.2h, drying at 80-82 ℃ for 1-2h, washing, heating and curing at 163-165 ℃ to obtain the hydrophobic modified cellulose fiber.
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