CN117867855A - High-barrier-property breathable composite cloth, preparation method thereof and surgical kit - Google Patents
High-barrier-property breathable composite cloth, preparation method thereof and surgical kit Download PDFInfo
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- CN117867855A CN117867855A CN202410187761.6A CN202410187761A CN117867855A CN 117867855 A CN117867855 A CN 117867855A CN 202410187761 A CN202410187761 A CN 202410187761A CN 117867855 A CN117867855 A CN 117867855A
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- substrate layer
- woven fabric
- fabric substrate
- barrier
- barrier material
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- 239000004744 fabric Substances 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 114
- 239000000758 substrate Substances 0.000 claims abstract description 109
- 230000004888 barrier function Effects 0.000 claims abstract description 100
- 239000000463 material Substances 0.000 claims abstract description 83
- -1 polypropylene Polymers 0.000 claims abstract description 66
- 239000011256 inorganic filler Substances 0.000 claims abstract description 61
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 61
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 60
- 239000004743 Polypropylene Substances 0.000 claims abstract description 48
- 229920001155 polypropylene Polymers 0.000 claims abstract description 48
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 38
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 16
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011737 fluorine Substances 0.000 claims abstract description 15
- 229920001577 copolymer Polymers 0.000 claims abstract description 5
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims abstract 3
- 239000000178 monomer Substances 0.000 claims description 39
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 27
- 125000004386 diacrylate group Chemical group 0.000 claims description 25
- 239000011261 inert gas Substances 0.000 claims description 21
- 230000001678 irradiating effect Effects 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- LEJBBGNFPAFPKQ-UHFFFAOYSA-N 2-(2-prop-2-enoyloxyethoxy)ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOC(=O)C=C LEJBBGNFPAFPKQ-UHFFFAOYSA-N 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 13
- 238000007590 electrostatic spraying Methods 0.000 claims description 12
- 238000006116 polymerization reaction Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- KUGVQHLGVGPAIZ-UHFFFAOYSA-N 1,1,1,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecan-2-yl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(F)(C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F KUGVQHLGVGPAIZ-UHFFFAOYSA-N 0.000 claims description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- STYXVTBFUKQEKM-UHFFFAOYSA-N 1,1,1,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctan-2-yl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(F)(C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F STYXVTBFUKQEKM-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- VOBUAPTXJKMNCT-UHFFFAOYSA-N 1-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound CCCCCC(OC(=O)C=C)OC(=O)C=C VOBUAPTXJKMNCT-UHFFFAOYSA-N 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000035699 permeability Effects 0.000 abstract description 12
- 230000000052 comparative effect Effects 0.000 description 17
- 239000003086 colorant Substances 0.000 description 15
- 239000002994 raw material Substances 0.000 description 13
- ZYMKZMDQUPCXRP-UHFFFAOYSA-N fluoro prop-2-enoate Chemical compound FOC(=O)C=C ZYMKZMDQUPCXRP-UHFFFAOYSA-N 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical group CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical group CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- 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
- D06M14/18—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation
- D06M14/26—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of synthetic origin
- D06M14/28—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of synthetic origin of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B46/00—Surgical drapes
- A61B46/40—Drape material, e.g. laminates; Manufacture thereof
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- 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
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Manufacturing & Machinery (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Heart & Thoracic Surgery (AREA)
- Toxicology (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a high-barrier breathable composite cloth, a preparation method thereof and an operation kit, wherein the composite cloth comprises a non-woven fabric substrate layer and a barrier material arranged on the non-woven fabric substrate layer, the non-woven fabric substrate layer comprises polypropylene, graphene oxide and polar inorganic filler, the barrier material comprises fluorine-containing acrylate, (methyl) acrylate and diacrylate copolymers, and the non-woven fabric substrate layer is connected with the barrier material through covalent bonds. The cloth has high barrier property and good air permeability, and can meet the requirements of safety and comfort in use of the surgical bag.
Description
Technical Field
The invention relates to the field of non-woven fabrics for surgical packs, in particular to a high-barrier breathable composite cloth, a preparation method thereof and a surgical pack.
Background
Surgical packs typically include cloth material for isolating the patient from the medical personnel, which may be laid down on the patient during surgery or worn on the medical personnel to prevent cross-contamination between the medical personnel and the patient. Aiming at different operations and different purposes, different requirements are required for the functions of the cloth of the operation bag. In some practical application scenes, the cloth of the operation bag needs to have higher barrier property, so that potential safety hazards caused by liquid permeation into the operation bag are avoided, the cloth of the operation bag is required to have air permeability, excessive sultry in the operation bag is avoided, and comfortableness is improved. However, the existing surgical drape does not meet the above-described needs.
Disclosure of Invention
In view of the shortcomings of the prior art, a first object of the present invention is to provide a high-barrier breathable composite fabric, which has high barrier property and good breathability, and can meet the requirements of safety and comfort in use of a surgical kit.
The second object of the invention is to provide a preparation method of the high-barrier breathable composite cloth, which has simple steps and low cost.
A third object of the present invention is to provide a surgical kit that is safe and comfortable to use.
To achieve the first object of the present invention, the present invention provides a high barrier breathable composite fabric, which comprises a non-woven fabric substrate layer and a barrier material disposed on the non-woven fabric substrate layer, wherein the non-woven fabric substrate layer comprises polypropylene, graphene oxide and a polar inorganic filler, the barrier material comprises a copolymer of fluorine-containing acrylate, (meth) acrylate and diacrylate, and the non-woven fabric substrate layer and the barrier material are connected through a covalent bond.
In some embodiments of the invention, the nonwoven fabric substrate layer has a grammage of 90 to 100g/m 2 The gram weight of the high-barrier breathable composite cloth is 110-120g/m 2 。
In some embodiments of the invention, the mass ratio of the polypropylene, the graphene oxide, and the polar inorganic filler is 1: (0.02-0.03): (0.1-0.2).
In some embodiments of the invention, the graphene oxide has a particle size of 300-500 nm.
In some embodiments of the present invention, the polar inorganic filler is selected from at least one of silica, titania, and alumina, and the polar inorganic filler has a particle size of 50 to 200nm.
In some embodiments of the invention, the mass ratio of the fluoroacrylate, the (meth) acrylate, and the diacrylate is 1: (2-3): (0.1-0.2).
In some embodiments of the invention, the fluoroacrylate is a perfluoroalkyl ethyl methacrylate selected from at least one of perfluorooctyl ethyl methacrylate, perfluorohexyl ethyl methacrylate.
In some embodiments of the present invention, the (meth) acrylate is selected from at least one of methyl (meth) acrylate, ethyl (meth) acrylate, and propyl (meth) acrylate.
In some embodiments of the invention, the diacrylate is at least one of diethylene glycol diacrylate and hexanediol diacrylate
In some embodiments of the invention, the nonwoven substrate layer includes an inner side and an outer side, and the barrier material is disposed on the outer side of the nonwoven substrate layer.
In some embodiments of the invention, the nonwoven substrate layer forms radicals upon irradiation with ultraviolet light, and monomers of the barrier material polymerize on the radicals to form the barrier material.
In order to achieve the second object of the present invention, the present invention provides a method for preparing a high barrier breathable composite fabric according to any one of the above aspects, comprising the steps of:
step one: uniformly mixing the polypropylene, the graphene oxide and the polar inorganic filler, and preparing a non-woven fabric substrate layer through electrostatic spraying;
step two: the non-woven fabric substrate layer is soaked into a solution containing the monomer of the barrier material for polymerization reaction after being irradiated by ultraviolet rays, so as to obtain composite cloth;
step three: and cleaning the composite cloth and drying.
In some embodiments of the invention, in the second step, irradiating the nonwoven fabric substrate layer with ultraviolet light includes: and (3) irradiating the outer side surface of the non-woven fabric substrate layer under ultraviolet rays.
In some embodiments of the present invention, in the second step, the irradiation dose of the ultraviolet ray is 600 to 800kJ/cm 2 。
In some embodiments of the invention, in the second step, the solvent in the solution containing the monomer of the barrier material is at least one of ethyl acetate, acetone, and tetrahydrofuran, and the total concentration of the monomer in the solution is 35 to 45wt%.
To achieve the third object of the present invention, the present invention provides a surgical kit made of a high-barrier breathable composite cloth according to any one of the above-mentioned aspects, or made of a high-barrier breathable composite cloth obtained by the preparation method according to any one of the above-mentioned aspects.
Compared with the prior art, the invention has the following beneficial effects:
the high-barrier-property breathable composite cloth mainly comprises a non-woven fabric substrate layer and barrier materials grafted on the non-woven fabric substrate layer, wherein graphene oxide and polar inorganic filler are added in polypropylene resin in the non-woven fabric substrate layer, and the graphene oxide and the polar inorganic filler can improve the grafting point position on the polypropylene resin so as to link more barrier materials on the non-woven fabric substrate layer, improve the barrier property of the cloth, improve the strength of non-woven fabric fibers, and facilitate the non-woven fabric to improve stability and maintain the pore diameter of ventilation holes with proper size in the preparation, storage, transportation and use processes, and maintain good ventilation property. Therefore, the cloth with high barrier property and good air permeability is obtained through the combination of the non-woven fabric base material layer and the barrier material, is suitable for the surgical bag, and can improve the use safety and comfort of the surgical bag.
Detailed Description
The embodiment of the invention provides a high-barrier breathable composite cloth, which not only has high liquid barrier property, can separate liquid splashing and permeation in operation, improves the use safety of an operation bag, but also has good air permeability, allows air to pass through the composite cloth, and improves the comfort of the operation bag. The high-barrier-property breathable composite cloth of the embodiment is particularly suitable for preparing surgical packs, and of course, the high-barrier-property breathable composite cloth of the embodiment can also be used for other scenes and applications, especially scenes with barrier property and breathability requirements.
The high-barrier-property breathable composite cloth of the embodiment comprises a non-woven fabric substrate layer and a barrier material arranged on the non-woven fabric substrate layer, wherein the non-woven fabric substrate layer is connected with the barrier material through a covalent bond, so that the barrier material can be firmly combined on the non-woven fabric substrate layer, and potential safety hazards caused by easy stripping and falling of the barrier material are avoided.
Wherein the non-woven fabric substrate layer comprises polypropylene, graphene oxide and polar inorganic filler. Polypropylene is used as matrix resin, is the main component in the non-woven fabric base material layer fiber, can play the role of adhesion to form non-woven fabric, and the tertiary butyl carbon atom on polypropylene is easy to dehydrogenate to form grafting sites. Graphene oxide is used as one of the fillers, the graphene oxide has a partial graphene conjugated structure, can absorb energy, promotes the polypropylene to form grafting sites, and oxygen-containing polar groups in the graphene oxide can attract the barrier material monomer through intermolecular interaction force, so that the barrier material is polymerized on the surface of the non-woven fabric substrate layer. The polar inorganic filler is used as another filler, so that the dispersion of graphene oxide can be promoted, the mechanical strength of the non-woven fabric substrate layer can be improved together with the graphene oxide, and the grafting rate of the non-woven fabric substrate layer can be improved. The raw materials comprising polypropylene, graphene oxide and polar inorganic filler can be used for preparing the non-woven fabric by the existing non-woven fabric preparation method, fibers in the non-woven fabric are arranged in a disordered manner and are adhered together, gaps are formed among the fibers, and the non-woven fabric has good air permeability.
The barrier material comprises a copolymer of a fluoroacrylate, (meth) acrylate and a diacrylate. The fluoroacrylate has fluorine atoms, so that the barrier material has good hydrophobicity and oleophobicity, thereby being capable of blocking liquid permeation and providing liquid barrier property for the composite cloth. The (methyl) acrylic ester has high polymerization activity and viscosity, and is favorable for the connection and polymerization of the barrier material on the non-woven fabric substrate layer. The diacrylate can improve the crosslinking degree of the barrier material and improve the barrier property and mechanical property of the barrier material.
From the above, the composite cloth of the embodiment adopts the non-woven fabric base material layer and the blocking material for compounding, has good air permeability and blocking property, and can meet the requirements of the operation bag on use safety and comfort.
In some examples, the nonwoven fabric substrate layer is composed of polypropylene, graphene oxide, and a polar inorganic filler. In other examples, the nonwoven fabric substrate layer is mainly composed of polypropylene, graphene oxide, and a polar inorganic filler, and the nonwoven fabric substrate layer may further contain other auxiliaries such as a colorant.
In some examples, the barrier material is composed of a copolymer of a fluoroacrylate, (meth) acrylate and a diacrylate.
In some examples, the nonwoven substrate layer has a grammage of 90 to 100g/m 2 The gram weight of the high-barrier breathable composite cloth is 110-120g/m 2 . I.e. the gram weight of the nonwoven substrate layer is 90-100g/m before grafting the barrier material 2 For example, it may be 90g/m 2 、95g/m 2 、100g/m 2 And the like, the nonwoven fabric substrate layer has sufficient strength and has ventilation holes of appropriate pore diameters at this grammage, contributing to ensuring the ventilation property of the nonwoven fabric layer. After the non-woven fabric substrate layer is grafted with the barrier material, the gram weight of the obtained high-barrier breathable composite cloth is 110-120g/m 2 For example, 110g/m 2 、115g/m 2 、120g/m 2 And the like, the high-barrier-property breathable composite cloth obtained under the gram weight can be attached with enough barrier materials, so that the liquid barrier function is better realized, and the air permeability of the non-woven fabric layer is not excessively influenced.
In some examples, the thickness of the high barrier breathable composite cloth may be 0.5-2 mm, such as 0.5mm, 1mm, 1.5mm, etc.
In some examples, the mass ratio of polypropylene, graphene oxide, to polar inorganic filler is 1: (0.02-0.03): (0.1-0.2), for example, the mass ratio of polypropylene, graphene oxide and polar inorganic filler is 1:0.02:0.1, 1:0.02:0.15, 1:0.02:0.2, 1:0.03:0.1, 1:0.03:0.15, 1:0.03:0.2, etc. When the mass ratio of the polypropylene, the graphene oxide and the polar inorganic filler is in the above range, the non-woven fabric substrate layer has proper strength, and the grafting effect of the barrier material is better.
In some examples, the particle size of graphene oxide is 300-500nm, and when the particle size of graphene oxide is in the above range, the graphene oxide raw material is readily available and has a sufficient surface area and good dispersibility. The graphene oxide may have a structure close to a lamellar plane, and the particle size of the graphene oxide may refer to an average diameter of a portion of the graphene oxide close to the lamellar plane.
In some examples, the polar inorganic filler is at least one selected from silicon dioxide, titanium dioxide and aluminum oxide, for example, one or a combination of two or three, and the polar inorganic filler can be used for being matched with graphene oxide to better improve the strength of the non-woven fabric substrate layer and improve the grafting effect.
In some examples, the particle size of the polar inorganic filler is 50 to 200nm, and when the particle size of the polar inorganic filler is in the above range, the polar inorganic filler can be uniformly dispersed in the polypropylene resin and has a good reinforcing effect.
In some examples, the mass ratio of fluoroacrylate, (meth) acrylate to diacrylate is 1: (2-3): (0.1 to 0.2), for example, 1:2:0.1, 1:2:0.2, 1:2.5:0.1, 1:2.5:0.2, 1:3:0.1, 1:3:0.2, etc., so that the barrier material can be better grafted on the non-woven fabric substrate layer, the grafting efficiency is improved, and the air permeability of the composite cloth is not affected by excessive crosslinking.
In some examples, the fluorine-containing acrylate is perfluoroalkyl ethyl methacrylate, and the perfluoroalkyl ethyl methacrylate is at least one selected from perfluorooctyl ethyl methacrylate and perfluorohexyl ethyl methacrylate, and the perfluoroalkyl ethyl methacrylate has the advantages of readily available raw materials, high fluorine atom content and the like.
In some examples, the (meth) acrylic acid esters include acrylic acid esters and methacrylic acid esters, at least one selected from the group consisting of methyl (meth) acrylate, ethyl (meth) acrylate, and propyl (meth) acrylate, which are less sterically hindered and facilitate attachment to the nonwoven substrate layer.
In some examples, the nonwoven substrate layer includes an inner side and an outer side, and the barrier material is disposed on the outer side of the nonwoven substrate layer to provide a liquid barrier primarily on the outer side of the nonwoven substrate layer.
In some examples, the non-woven fabric substrate layer forms free radicals after being irradiated by ultraviolet rays, monomers of the barrier material polymerize on the free radicals to form the barrier material, the main raw material of the non-woven fabric substrate layer is polypropylene, when the non-woven fabric is irradiated by ultraviolet rays, the tertiary butyl group on the polypropylene can form the free radicals, and the presence of graphene oxide can enable the free radicals to be more stable and facilitate grafting of the barrier material.
In some examples, the embodiment also provides a preparation method of the high-barrier breathable composite cloth, which comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide and a polar inorganic filler, and preparing a non-woven fabric substrate layer through electrostatic spraying. In the first step, the polypropylene, the graphene oxide and the polar inorganic filler can be subjected to melt extrusion granulation before entering the electrostatic spraying equipment, so that the polypropylene, the graphene oxide and the polar inorganic filler are uniformly dispersed.
Step two: and (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. The ultraviolet irradiation step is performed under the protection of inert gas, so that the stability of free radicals can be improved, and excessive oxidative decomposition of the non-woven fabric substrate layer is avoided.
Step three: and cleaning the composite cloth and drying. The grafted cloth obtained in the second step can be taken out of the solution, the solution in the second step can be recycled, then the composite cloth is washed for a plurality of times by ethanol or acetone, and then the composite cloth is washed for a plurality of times by water, so that impurities such as solvent, monomer, homopolymer and the like remained in the composite cloth are removed. The dried cloth is repeatedly washed by ethyl acetate, and the change of the dry weight of the cloth before and after the cloth is not more than 0.3wt percent, which shows that the barrier material is firmly combined on the non-woven fabric substrate layer through covalent bonds, and the step three is carried out for fully washing the composite cloth.
From the above, the preparation method of the embodiment has simple steps and low cost.
In some examples, in step two, irradiating the nonwoven substrate layer with ultraviolet light under an inert gas comprises: the outer side surface of the nonwoven fabric substrate layer is irradiated with ultraviolet rays under inert gas, and the barrier material is formed on the outer side surface of the nonwoven fabric substrate layer, so that the cost is further reduced.
In some examples, the irradiation dose of the ultraviolet rays is 600 to 800kJ/cm 2 . When the ultraviolet dose is in the above range, a proper amount of free radicals can be formed on the nonwoven fabric substrate layer, so that the raw materials of the subsequent barrier material are polymerized, and the nonwoven fabric substrate layer is not excessively degraded.
In some examples, in the second step, the solvent in the solution of the monomer containing the barrier material is at least one of ethyl acetate, acetone and tetrahydrofuran, and the solvent has low toxicity, is easy to recycle and is safe to use. The total concentration of the monomers in the solution is 35 to 45wt%, i.e., the mass of the monomers accounts for 35 to 45wt% of the total mass of the monomer-containing solution, for example, 35wt%, 36wt%, 37wt%, 38wt%, 39wt%, 40wt%, 41wt%, 42wt%, 43wt%, 44wt%, 45wt%, etc., and when the total concentration of the monomers in the solution is within the above range, the dispersion and the polymerization reaction of the monomers are facilitated.
In some examples, the grammage of the nonwoven substrate layer, the grammage of the composite material comprising the barrier material, the thickness of the composite material, etc. may be adjusted by controlling the process parameters of the electrostatic spraying apparatus, the immersion time and temperature in step two, etc.
In some examples, the embodiment also provides a surgical bag made of the high-barrier breathable composite cloth, and the surgical bag can well block liquid and allow gas to permeate, so that the use safety and comfort of the surgical bag can be improved.
The present invention will be described in further detail with reference to specific examples. In the following examples, the kinds of raw materials used in each example are the same unless otherwise specified.
Example 1
The non-woven fabric substrate layer of the high-barrier breathable composite cloth of the embodiment mainly comprises the following components in percentage by mass: 0.03:0.2 of polypropylene, graphene oxide and polar inorganic filler, and further comprises 0.5% of colorant by mass fraction relative to the total mass of the polypropylene, the graphene oxide and the polar inorganic filler. Wherein the polar inorganic filler is silica.
The barrier material comprises the following raw materials in percentage by mass: 3:0.2 of a fluoroacrylate, (meth) acrylate and diacrylate. Wherein the fluorine-containing acrylate is perfluorooctyl ethyl methacrylate. The (meth) acrylate is ethyl methacrylate. The diacrylate is diethylene glycol diacrylate.
The preparation method of the embodiment comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide, polar inorganic filler and a colorant, and preparing a non-woven fabric substrate layer through electrostatic spraying.
Step two: irradiating the outer side surface of the nonwoven fabric substrate layer with ultraviolet rays under inert gas, wherein the irradiation dose of ultraviolet rays is 800kJ/cm 2 . And (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. Wherein the solvent in the solution of the monomer containing the barrier material is ethyl acetate and the total concentration of the monomer in the solution is 35wt%.
Step three: and cleaning the composite cloth and drying.
The thickness of the obtained high-barrier breathable composite cloth is about 1.5mm. The basis weight of the nonwoven fabric substrate layer was about 100g/m 2 The gram weight of the final high-barrier breathable composite cloth is about 120g/m 2 。
Example 2
The non-woven fabric substrate layer of the high-barrier breathable composite cloth of the embodiment mainly comprises the following components in percentage by mass: 0.02:0.1 of polypropylene, graphene oxide and polar inorganic filler, and further comprises 0.5% of colorant by mass fraction relative to the total mass of the polypropylene, the graphene oxide and the polar inorganic filler. Wherein the polar inorganic filler is alumina.
The barrier material comprises the following raw materials in percentage by mass: 2:0.1 of a fluorinated acrylate, (meth) acrylate and diacrylate. Wherein the fluorine-containing acrylate is perfluorohexyl ethyl methacrylate. The (meth) acrylate is propyl acrylate. The diacrylate is hexanediol diacrylate.
The preparation method of the embodiment comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide, polar inorganic filler and a colorant, and preparing a non-woven fabric substrate layer through electrostatic spraying.
Step two: irradiating the outer side surface of the nonwoven fabric substrate layer with ultraviolet rays under inert gas at an ultraviolet irradiation dose of 700kJ/cm 2 . And (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. Wherein the solvent in the solution of the monomer containing the barrier material is acetone, and the total concentration of the monomer in the solution is 45wt%.
Step three: and cleaning the composite cloth and drying.
The thickness of the obtained high-barrier breathable composite cloth is about 1mm. The basis weight of the nonwoven fabric substrate layer was about 90g/m 2 The gram weight of the final high-barrier breathable composite cloth is about 110g/m 2 。
Example 3
The non-woven fabric substrate layer of the high-barrier breathable composite cloth of the embodiment mainly comprises the following components in percentage by mass: 0.03:0.1 of polypropylene, graphene oxide and polar inorganic filler, and further comprises 0.5% of colorant by mass fraction relative to the total mass of the polypropylene, the graphene oxide and the polar inorganic filler. Wherein the polar inorganic filler is titanium dioxide.
The barrier material comprises the following raw materials in percentage by mass: 2.5:0.2 of a fluoroacrylate, (meth) acrylate and diacrylate. Wherein the fluorine-containing acrylate is perfluorohexyl ethyl methacrylate. The (meth) acrylate is methyl methacrylate. The diacrylate is hexanediol diacrylate.
The preparation method of the embodiment comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide, polar inorganic filler and a colorant, and preparing a non-woven fabric substrate layer through electrostatic spraying.
Step two: irradiating the outer side surface of the nonwoven fabric substrate layer with ultraviolet rays under inert gas at a dose of 600kJ/cm 2 . And (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. Wherein the solvent in the solution of the monomer containing the barrier material is tetrahydrofuran, and the total concentration of the monomer in the solution is 40wt%.
Step three: and cleaning the composite cloth and drying.
The thickness of the obtained high-barrier breathable composite cloth is about 1mm. The basis weight of the nonwoven fabric substrate layer was about 90g/m 2 The gram weight of the final high-barrier breathable composite cloth is about 120g/m 2 。
Comparative example 1
The non-woven fabric substrate layer of the comparative example mainly comprises the following components in percentage by mass: 0.01:0.3 of polypropylene, graphene oxide and polar inorganic filler, and further comprises 0.5% of colorant by mass fraction relative to the total mass of the polypropylene, the graphene oxide and the polar inorganic filler. Wherein the polar inorganic filler is silica.
The barrier material comprises the following raw materials in percentage by mass: 3:0.2 of a fluoroacrylate, (meth) acrylate and diacrylate. Wherein the fluorine-containing acrylate is perfluorooctyl ethyl methacrylate. The (meth) acrylate is ethyl methacrylate. The diacrylate is diethylene glycol diacrylate.
The preparation method of the comparative example comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide, polar inorganic filler and a colorant, and preparing a non-woven fabric substrate layer through electrostatic spraying.
Step two: irradiating the outer side surface of the nonwoven fabric substrate layer with ultraviolet rays under inert gas, wherein the irradiation dose of ultraviolet rays is 800kJ/cm 2 . And (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. Wherein the solvent in the solution of the monomer containing the barrier material is ethyl acetate and the total concentration of the monomer in the solution is 35wt%.
Step three: and cleaning the composite cloth and drying.
The thickness of the obtained high-barrier breathable composite cloth is about 1.5mm. The basis weight of the nonwoven fabric substrate layer was about 100g/m 2 The gram weight of the final high-barrier breathable composite cloth is about 110g/m 2 。
Comparative example 2
The non-woven fabric substrate layer of the comparative example mainly comprises the following components in percentage by mass: 0.04:0.05 of polypropylene, graphene oxide and polar inorganic filler, and further comprises 0.5% of colorant by mass fraction relative to the total mass of the polypropylene, the graphene oxide and the polar inorganic filler. Wherein the polar inorganic filler is silica.
The barrier material comprises the following raw materials in percentage by mass: 3:0.2 of a fluoroacrylate, (meth) acrylate and diacrylate. Wherein the fluorine-containing acrylate is perfluorooctyl ethyl methacrylate. The (meth) acrylate is ethyl methacrylate. The diacrylate is diethylene glycol diacrylate.
The preparation method of the comparative example comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide, polar inorganic filler and a colorant, and preparing a non-woven fabric substrate layer through electrostatic spraying.
Step two: under inert gas, the outer side surface of the non-woven fabric base material layer is put into ultraviolet raysIrradiating under the condition that the irradiation dose of ultraviolet rays is 800kJ/cm 2 . And (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. Wherein the solvent in the solution of the monomer containing the barrier material is ethyl acetate and the total concentration of the monomer in the solution is 35wt%.
Step three: and cleaning the composite cloth and drying.
The thickness of the obtained high-barrier breathable composite cloth is about 1.5mm. The basis weight of the nonwoven fabric substrate layer was about 100g/m 2 The gram weight of the final high-barrier breathable composite cloth is about 110g/m 2 。
Comparative example 3
The non-woven fabric substrate layer of the comparative example mainly comprises the following components in percentage by mass: 0.03:0.2 of polypropylene, graphene oxide and polar inorganic filler, and further comprises 0.5% of colorant by mass fraction relative to the total mass of the polypropylene, the graphene oxide and the polar inorganic filler. Wherein the polar inorganic filler is silica.
The barrier material comprises the following raw materials in percentage by mass: 0.5:0.2 of a fluoroacrylate, (meth) acrylate and diacrylate. Wherein the fluorine-containing acrylate is perfluorooctyl ethyl methacrylate. The (meth) acrylate is ethyl methacrylate. The diacrylate is diethylene glycol diacrylate.
The preparation method of the comparative example comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide, polar inorganic filler and a colorant, and preparing a non-woven fabric substrate layer through electrostatic spraying.
Step two: irradiating the outer side surface of the nonwoven fabric substrate layer with ultraviolet rays under inert gas, wherein the irradiation dose of ultraviolet rays is 800kJ/cm 2 . And (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. Wherein the solvent in the solution of the monomer containing the barrier material is ethyl acetate and the total concentration of the monomer in the solution is 35wt%.
Step three: and cleaning the composite cloth and drying.
The thickness of the obtained high-barrier breathable composite cloth is about 1.5mm. The basis weight of the nonwoven fabric substrate layer was about 100g/m 2 The gram weight of the final high-barrier breathable composite cloth is about 110g/m 2 。
Comparative example 4
The non-woven fabric substrate layer of the comparative example mainly comprises the following components in percentage by mass: 0.03:0.2 of polypropylene, graphene oxide and polar inorganic filler, and further comprises 0.5% of colorant by mass fraction relative to the total mass of the polypropylene, the graphene oxide and the polar inorganic filler. Wherein the polar inorganic filler is silica.
The barrier material comprises the following raw materials in percentage by mass: 3:0.4 of a fluorinated acrylate, (meth) acrylate and diacrylate. Wherein the fluorine-containing acrylate is perfluorooctyl ethyl methacrylate. The (meth) acrylate is ethyl methacrylate. The diacrylate is diethylene glycol diacrylate.
The preparation method of the comparative example comprises the following steps:
step one: and uniformly mixing polypropylene, graphene oxide, polar inorganic filler and a colorant, and preparing a non-woven fabric substrate layer through electrostatic spraying.
Step two: irradiating the outer side surface of the nonwoven fabric substrate layer with ultraviolet rays under inert gas, wherein the irradiation dose of ultraviolet rays is 800kJ/cm 2 . And (3) irradiating the non-woven fabric substrate layer with ultraviolet rays under inert gas, and then immersing the non-woven fabric substrate layer into a monomer solution containing a barrier material for polymerization reaction to obtain the composite cloth. Wherein the solvent in the solution of the monomer containing the barrier material is ethyl acetate and the total concentration of the monomer in the solution is 35wt%.
Step three: and cleaning the composite cloth and drying.
The thickness of the obtained high-barrier breathable composite cloth is about 1.5mm. The basis weight of the nonwoven fabric substrate layer was about 100g/m 2 The gram weight of the final high-barrier breathable composite cloth is about 115g/m 2 。
The composite cloth obtained in the above examples and comparative examples was subjected to air permeability test, barrier property test, hydrophobicity test, and mechanical property test. Wherein, the air permeability test is tested with reference to GB/T5453-1997, the barrier property test is tested with reference to GB/T4744-2013, the hydrophobicity test is tested by adopting a contact angle tester, and the mechanical property test is tested with reference to GB/T12914-2018. The test results are shown in the following table.
From the above, the embodiment of the invention adopts graphene oxide and polar inorganic filler to modify polypropylene, and adjusts the dosage proportion of fluorine-containing acrylic ester and (methyl) acrylic ester, so that the grafting efficiency of the polypropylene non-woven fabric base material to the fluorine-containing acrylic ester can be improved, the water resistance and the barrier property of the composite cloth are improved while the higher air permeability of the composite cloth is ensured, and the mechanical strength of the composite cloth is also improved through grafting crosslinking. In comparative example 1, more graphene oxide and less polar inorganic filler are adopted, in comparative example 2, less graphene oxide and more polar inorganic filler are adopted, and the barrier property, the hydrophobicity and the mechanical strength of the two materials are obviously reduced compared with those of the examples, which is caused by the reduction of the grafting density of the barrier material due to the improper proportion of the graphene oxide and the polar inorganic filler. In comparative example 3, less acrylic ester is adopted, the barrier property, the hydrophobicity and the mechanical strength of the obtained material are reduced, and the fact that the acrylic ester in the barrier material can improve the grafting efficiency is demonstrated to a certain extent, and the reduction of the use amount of the acrylic ester can reduce the grafting quantity. The increase in the amount of diacrylate used in comparative example 4 has a large influence on the air permeability, although it can improve the barrier property, the hydrophobicity and the mechanical properties.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Finally, it should be emphasized that the above description is merely of a preferred embodiment of the invention, and is not intended to limit the invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The high-barrier-property breathable composite cloth is characterized by comprising a non-woven fabric substrate layer and a barrier material arranged on the non-woven fabric substrate layer, wherein the non-woven fabric substrate layer comprises polypropylene, graphene oxide and polar inorganic filler, the barrier material comprises a copolymer of fluorine-containing acrylate, (methyl) acrylate and diacrylate, and the non-woven fabric substrate layer is connected with the barrier material through a covalent bond.
2. The high barrier breathable composite fabric of claim 1, wherein:
the gram weight of the non-woven fabric substrate layer is 90-100g/m 2 The gram weight of the high-barrier breathable composite cloth is 110-120g/m 2 。
3. The high barrier breathable composite fabric of claim 1 or 2, wherein:
the mass ratio of the polypropylene to the graphene oxide to the polar inorganic filler is 1: (0.02-0.03): (0.1-0.2); and/or
The particle size of the graphene oxide is 300-500nm; and/or
The polar inorganic filler is at least one selected from silicon dioxide, titanium dioxide and aluminum oxide, and the particle size of the polar inorganic filler is 50-200nm.
4. The high barrier breathable composite fabric of claim 1 or 2, wherein:
the mass ratio of the fluorine-containing acrylate to the (methyl) acrylate to the diacrylate is 1: (2-3): (0.1-0.2); and/or
The fluorine-containing acrylic ester is perfluoroalkyl ethyl methacrylate, and the perfluoroalkyl ethyl methacrylate is at least one of perfluorooctyl ethyl methacrylate and perfluorohexyl ethyl methacrylate; and/or
The (methyl) acrylic ester is at least one selected from methyl (methyl) acrylate, ethyl (methyl) acrylate and propyl (methyl) acrylate; and/or
The diacrylate is at least one of diethylene glycol diacrylate and hexanediol diacrylate.
5. The high barrier breathable composite fabric of claim 1 or 2, wherein:
the non-woven fabric substrate layer comprises an inner side surface and an outer side surface, and the barrier material is arranged on the outer side surface of the non-woven fabric substrate layer.
6. The high barrier breathable composite fabric of claim 1 or 2, wherein:
the non-woven fabric substrate layer is irradiated by ultraviolet rays to form free radicals, and the monomer of the barrier material is polymerized on the free radicals to form the barrier material.
7. The method for preparing a high barrier breathable composite cloth according to any one of claims 1 to 6, characterized by comprising the steps of:
step one: uniformly mixing the polypropylene, the graphene oxide and the polar inorganic filler, and preparing a non-woven fabric substrate layer through electrostatic spraying;
step two: the non-woven fabric substrate layer is irradiated by ultraviolet rays under inert gas and then is immersed into a solution containing a monomer of the barrier material for polymerization reaction, so that composite cloth is obtained;
step three: and cleaning the composite cloth and drying.
8. The method of manufacturing according to claim 7, wherein:
in the second step, irradiating the nonwoven fabric substrate layer with ultraviolet rays under an inert gas includes: under inert gas, the outer side surface of the non-woven fabric substrate layer is irradiated under ultraviolet rays; and/or the irradiation dose of the ultraviolet rays is 600-800kJ/cm 2 。
9. The method of manufacturing according to claim 7, wherein:
in the second step, the solvent in the solution containing the monomer of the barrier material is at least one of ethyl acetate, acetone and tetrahydrofuran, and the total concentration of the monomer in the solution is 35-45wt%.
10. A surgical kit characterized by being made of a high barrier breathable composite cloth according to any one of claims 1 to 6 or being made of a high barrier breathable composite cloth obtained by the method of preparation according to any one of claims 7 to 9.
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