CN114714707B - Breathable high-elastic mask fabric and preparation method thereof - Google Patents
Breathable high-elastic mask fabric and preparation method thereof Download PDFInfo
- Publication number
- CN114714707B CN114714707B CN202210515499.4A CN202210515499A CN114714707B CN 114714707 B CN114714707 B CN 114714707B CN 202210515499 A CN202210515499 A CN 202210515499A CN 114714707 B CN114714707 B CN 114714707B
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- 239000004744 fabric Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- -1 polybutylene terephthalate Polymers 0.000 claims abstract description 66
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 45
- 239000004626 polylactic acid Substances 0.000 claims abstract description 45
- 239000002131 composite material Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 27
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 26
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 21
- 229920001707 polybutylene terephthalate Polymers 0.000 claims abstract description 21
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 56
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 48
- 239000000203 mixture Substances 0.000 claims description 45
- 239000000835 fiber Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 27
- 229910021389 graphene Inorganic materials 0.000 claims description 27
- 238000001914 filtration Methods 0.000 claims description 26
- 239000008367 deionised water Substances 0.000 claims description 22
- 229910021641 deionized water Inorganic materials 0.000 claims description 22
- OXSANYRLJHSQEP-UHFFFAOYSA-N 4-aminophthalic acid Chemical compound NC1=CC=C(C(O)=O)C(C(O)=O)=C1 OXSANYRLJHSQEP-UHFFFAOYSA-N 0.000 claims description 21
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 21
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 21
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 20
- GJAWHXHKYYXBSV-UHFFFAOYSA-N quinolinic acid Chemical compound OC(=O)C1=CC=CN=C1C(O)=O GJAWHXHKYYXBSV-UHFFFAOYSA-N 0.000 claims description 20
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 20
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 238000001291 vacuum drying Methods 0.000 claims description 16
- 238000007731 hot pressing Methods 0.000 claims description 14
- 238000009210 therapy by ultrasound Methods 0.000 claims description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 10
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 9
- 239000001263 FEMA 3042 Substances 0.000 claims description 9
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims description 9
- 238000000967 suction filtration Methods 0.000 claims description 9
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims description 9
- 229940033123 tannic acid Drugs 0.000 claims description 9
- 235000015523 tannic acid Nutrition 0.000 claims description 9
- 229920002258 tannic acid Polymers 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000005491 wire drawing Methods 0.000 claims description 8
- RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 7
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 6
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000004108 freeze drying Methods 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 229960001124 trientine Drugs 0.000 claims description 6
- WSNTYJGDOGPZEG-UHFFFAOYSA-N calcium ethanol dinitrate Chemical compound [Ca+2].CCO.[O-][N+]([O-])=O.[O-][N+]([O-])=O WSNTYJGDOGPZEG-UHFFFAOYSA-N 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- PLZWCRUDSJGCLS-UHFFFAOYSA-N calcium;pyridine-2,3-dicarboxylic acid Chemical compound [Ca].OC(=O)C1=CC=CN=C1C(O)=O PLZWCRUDSJGCLS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract description 7
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 abstract description 5
- 238000013329 compounding Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000004753 textile Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 52
- 230000000052 comparative effect Effects 0.000 description 20
- 241000894006 Bacteria Species 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 241000700605 Viruses Species 0.000 description 4
- 230000003373 anti-fouling effect Effects 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 206010042674 Swelling Diseases 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- DRZNAWCWULQRGP-UHFFFAOYSA-N sulfur trioxide;urea Chemical compound NC(N)=O.O=S(=O)=O DRZNAWCWULQRGP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/18—Elastic
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/30—Antimicrobial, e.g. antibacterial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/08—Impregnating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- 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
- D06M17/00—Producing multi-layer textile fabrics
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/30—Non-woven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a breathable high-elastic mask fabric and a preparation method thereof, and relates to the technical field of textile fabric materials. The breathable high-elastic mask fabric prepared by the invention comprises an upper layer, a middle layer and a lower layer; the upper layer and the lower layer are both non-woven fabrics, and the middle layer is a composite film; the non-woven fabric is prepared by melt-blowing polybutylene terephthalate composite master batch; the composite membrane is prepared by compounding hydroxyl polylactic acid and 4-guanidino phthalic acid hydrochloride for electrostatic spinning; the modified graphene oxide is introduced to the polybutylene terephthalate end group, so that the elasticity and heat resistance of the non-woven fabric are enhanced; 4-guanidino phthalic acid hydrochloride is introduced into the hydroxyl polylactic acid, so that the composite membrane has antibacterial property and simultaneously enhances the filterability, the air permeability and the dirt resistance.
Description
Technical Field
The invention relates to the technical field of textile fabric materials, in particular to a breathable high-elastic mask fabric and a preparation method thereof.
Background
In preventing infectious diseases, masks are used for preventing viruses and bacteria transmitted by spray and the like, and are a convenient protection measure for protecting human beings from being infected by bacteria. The mask is worn by people to set a filtering barrier for the respiratory tract, and has a filtering effect on inhaled air, so that a large amount of dust, bacteria, viruses, various harmful gases and the like mixed in the air cannot enter a human body. However, some viruses and bacteria are relatively stubborn and subtle, and can not play a role in isolating them only by virtue of the filterability of the fabric of the common mask, so that the mask with the functions of resisting bacteria and viruses is very important to develop in order to isolate them and better protect the health of a human body.
However, when the protective clothing is used in summer, the temperature in the protective clothing is high, bacteria are easy to breed, the performance of the mask can be influenced, if the protective clothing is replaced, resources are excessively used, and the heat resistance, the air permeability, the anti-fouling property and the like of the mask are ensured while the antibiosis is pursued.
Disclosure of Invention
The invention aims to provide a breathable high-elastic mask fabric and a preparation method thereof, so as to solve the problems in the background technology.
The breathable high-elastic mask fabric comprises an upper layer, a middle layer and a lower layer, wherein the upper layer and the lower layer are non-woven fabrics; the intermediate layer is a composite film.
Preferably, the said; the non-woven fabric is prepared by melt-blowing polybutylene terephthalate composite master batch; the polybutylene terephthalate composite master batch is prepared by introducing modified graphene oxide on a polybutylene terephthalate terminal group; the modified graphene oxide is prepared by reacting amino graphene oxide with pyridine-2, 3-dicarboxylic acid calcium.
Preferably, the composite membrane is prepared by compounding hydroxyl polylactic acid and 4-guanidino phthalic acid hydrochloride for electrostatic spinning.
Preferably, the hydroxyl polylactic acid is prepared by reacting ethanolamine with polylactic acid; the 4-guanidino phthalic acid hydrochloride is prepared by reacting thiourea trioxide with 4-aminophthalic acid.
Preferably, the preparation method of the breathable high-elastic mask fabric comprises the following specific steps of:
(1) Mixing pyridine-2, 3-dicarboxylic acid and absolute ethyl alcohol according to a mass ratio of 3:15-3:20, regulating the pH value to 6-7 by using ammonia water, dripping a calcium nitrate ethanol solution with a mass fraction of 3-8% at a rate of 5-8 ml/min, regulating the pH value to 6-7 by using ammonia water, adding amino graphene oxide with a mass 3-5 times that of pyridine-2, 3-dicarboxylic acid, stirring and reacting for 24-36 h at 50-80 rpm, standing for 5-8 h, filtering, washing for 3-5 times by using absolute ethyl alcohol, washing for 3-5 times by using acetone, transferring to a drying box with a temperature of 50-60 ℃ and drying to constant weight to obtain modified graphene oxide;
(2) Mixing polybutylene terephthalate, modified graphene oxide and tannic acid according to a mass ratio of 40:8:3-50:15:7, placing the mixture into a high-speed blending machine, stirring the mixture for 10-20 min at 90-120 ℃ and 600-1000 rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a wire spraying hole to form a long fiber web, hot-pressing the long fiber web into a shape through a hot press, cooling and shaping the long fiber web to obtain non-woven fabrics, and cutting the non-woven fabrics into the same size, namely an upper layer and a lower layer;
(3) Mixing deionized water, potassium carbonate and 4-aminophthalic acid according to the mass ratio of 7:1:1.5-8:1.5:3, stirring until the mixture is dissolved, adding thiourea trioxide with the mass of 0.8-0.9 times of the 4-aminophthalic acid for 5-8 times, reacting for 10-15 min at room temperature for 4-6 h after the addition is completed, standing for 24h, filtering, washing for 3-5 times by acetone, dispersing in the deionized water with the mass of 8-10 times of the 4-aminophthalic acid, heating to 80-90 ℃, stirring until the mixture is dissolved, adding hydrochloric acid solution with the mass of 0.4-0.5 times of the mass of the 4-aminophthalic acid with the mass fraction of 36-38%, filtering when the mixture is hot, standing for 10-12 h, cooling to 4-5 ℃, filtering, and vacuum drying at 80-90 ℃ to obtain 4-guanidino-phthalic acid hydrochloride;
(4) Mixing dichloromethane, dimethylformamide, hydroxy polylactic acid and 4-guanidino phthalic acid hydrochloride according to a mass ratio of 8:2:1.5:0.5-8:2:3:1.5, stirring for 1-3 hours at 30-50 rpm to obtain an electrostatic spinning solution, and carrying out electrostatic spinning to obtain a composite film;
(5) Sequentially paving a lower layer, a composite film and an upper layer, scraping edges, hot-pressing for 3-5 min on a hot press at 90-120 ℃, cooling to room temperature, soaking in an acetone solution with the mass fraction of 90-95%, soaking for 4-6 min, fishing out and naturally airing to obtain the breathable high-elastic mask fabric.
Preferably, in the step (1): the preparation method of the amino graphene oxide comprises the following steps: mixing a silane coupling agent KH560, triethylene tetramine and absolute ethyl alcohol according to the mass ratio of 1:2:15-1:2.5:20, and reacting for 20-24 hours at room temperature to obtain a solution A; mixing graphene oxide and deionized water according to a mass ratio of 1:15-1:20, and performing ultrasonic treatment at 40-50 kHz for 0.5-1 h to prepare a solution B; mixing the solution A and the solution B according to the mass ratio of 4:1-5:1, regulating the pH to 5-5.5 by acetic acid, heating to 80-90 ℃ for reacting for 20-24 hours, carrying out suction filtration after the reaction is finished, flushing with absolute ethyl alcohol and deionized water for 5-8 times, and finally drying in a vacuum drying oven at 50-60 ℃ to constant weight to obtain the amino graphene oxide.
Preferably, in the step (2): the gram weight of the non-woven fabric is 30-50 g/m 2 。
Preferably, in the step (3): : the preparation method of the sulfur trioxide urea comprises the following steps: mixing thiourea dioxide with peracetic acid solution with the mass fraction of 1-3% under ice bath condition, reacting for 3-3.5 h, filtering, washing with absolute ethyl alcohol for 3-5 times, and drying in a vacuum drying oven at 50-60 ℃ to constant weight to obtain thiourea trioxide.
Preferably, in the step (4): the preparation method of the hydroxyl polylactic acid comprises the following steps: dispersing polylactic acid in 1, 4-dioxane with the mass of 12-15 times of that of the polylactic acid, heating to 50-60 ℃, carrying out ultrasonic treatment at 40-50 kHz for 10-30 min, dripping ethanolamine solution with the mass of 1.3-1.5 times of that of the polylactic acid of 1.3-3% at the rate of 5-8 ml/min, continuing to react for 20-30 min, transferring to a refrigerator with the temperature of-40 to-45 ℃ for freezing for 10-12 h, then placing in the refrigerator with the temperature of-4 to-5 ℃ for extraction for 4-5 d, changing water three times per day during extraction, and finally placing in a freeze dryer with the temperature of-50 to-60 ℃ for freeze drying to obtain the hydroxyl polylactic acid.
Preferably, in the step (4): during electrostatic spinning, the receiving distance is 15-18 cm, the injection speed of the spinning solution is 1-3 mL/h, the relative humidity is 45-55%, the temperature is 23-27 ℃, and the voltage of the two electrodes is 15-18 kV.
Compared with the prior art, the invention has the following beneficial effects:
the breathable high-elastic mask fabric prepared by the method comprises an upper layer, a middle layer and a lower layer; the upper layer and the lower layer are both non-woven fabrics, and the middle layer is a composite film; the non-woven fabric is prepared by melt-blowing polybutylene terephthalate composite master batch; the composite membrane is prepared by compounding hydroxyl polylactic acid and 4-guanidino phthalic acid hydrochloride for electrostatic spinning;
the polybutylene terephthalate composite master batch is prepared by introducing modified graphene oxide on a polybutylene terephthalate end group; the modified graphene oxide is prepared by reacting amino graphene oxide with pyridine-2, 3-dicarboxylic acid calcium; the calcium ions interact with the amino graphene oxide sheets, so that the mechanical strength and the elastic modulus of the modified graphene oxide are enhanced, the elasticity of the non-woven fabric is improved, pyridine is introduced into the surface of the amino graphene oxide, and the hydrophilicity is enhanced; then reacting the modified graphene oxide with terminal carboxyl groups on polybutylene terephthalate, introducing the modified graphene oxide into a long chain, enhancing the elastic modulus of the non-woven fabric, and simultaneously, crosslinking the modified graphene oxide on polybutylene terephthalate by using tannic acid, thereby improving the crystallinity and the heat resistance of the non-woven fabric;
the hydroxyl polylactic acid is prepared by utilizing the reaction of ethanolamine and polylactic acid; the 4-guanidino phthalic acid hydrochloride is prepared by the reaction of thiourea trioxide and 4-aminophthalic acid; hydroxyl is introduced into the polylactic acid by ethanolamine, the 4-guanidino phthalic acid hydrochloride is compounded and then subjected to electrostatic spinning, the hydroxyl reacts with benzoic acid, and the hydroxyl is introduced to enhance the antibacterial property, so that the interval of the porous superfine fibers prepared after electrostatic spinning is shortened, and the filtering performance is enhanced; and when the upper layer and the lower layer are attached to the middle layer composite film, the acetone is used for swelling treatment, so that holes on the porous superfine fiber of the middle layer are increased and deepened, the air permeability is enhanced, the swelled porous superfine fiber enables the non-woven fabrics of the upper layer and the lower layer to form nano bulges, the hydrophilic upper layer and the hydrophilic lower layer can form a hydration layer, and the mask fabric has anti-fouling property.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to more clearly illustrate the method provided by the invention, the following examples are used for describing the detailed description, and the method for testing each index of the breathable high-elastic mask fabric prepared in the examples and comparative examples is as follows:
elasticity: the breathable high-elastic mask fabrics prepared in the examples and the comparative examples are subjected to elongation at break test.
Heat resistance: limiting oxygen index tests were carried out on the breathable high-elastic mask fabrics prepared in the examples and the comparative examples.
Antibacterial properties: the breathable high-elastic mask fabrics prepared in the examples and the comparative examples were subjected to antibacterial tests with reference to GB/T20944.
Air permeability: the breathable high-elastic mask fabrics prepared in the examples and the comparative examples were subjected to breathability test with reference to GB/T5453.
Stain resistance: the breathable high-elastic mask fabrics prepared in the examples and the comparative examples were subjected to a water contact angle test by a surface contact angle tester.
Example 1
(1) Mixing a silane coupling agent KH560, triethylene tetramine and absolute ethyl alcohol according to a mass ratio of 1:2:15, and reacting for 20 hours at room temperature to obtain a solution A; mixing graphene oxide with deionized water according to a mass ratio of 1:15, and performing ultrasonic treatment at 40kHz for 0.5h to obtain a solution B; mixing the solution A and the solution B according to a mass ratio of 4:1, regulating the pH value to 5 by using acetic acid, heating to 80 ℃ for reaction for 20 hours, carrying out suction filtration after the reaction is finished, flushing with absolute ethyl alcohol and deionized water for 5 times, and finally drying in a vacuum drying oven at 50 ℃ to constant weight to obtain the amino graphene oxide; mixing pyridine-2, 3-dicarboxylic acid and absolute ethyl alcohol according to a mass ratio of 3:15, regulating the pH value to 6 by using ammonia water, dropwise adding a 3% calcium nitrate ethanol solution with a mass fraction of 3:2 at a rate of 5ml/min, regulating the pH value to 6 by using ammonia water, adding amino graphene oxide with a mass 3 times that of pyridine-2, 3-dicarboxylic acid, stirring and reacting for 24 hours at 50rpm, standing for 5 hours after the reaction, filtering, washing for 3 times by using absolute ethyl alcohol, washing for 3 times by using acetone, and transferring to a drying box at 50 ℃ for drying to constant weight to obtain modified graphene oxide;
(2) Mixing polybutylene terephthalate, modified graphene oxide and tannic acid according to a mass ratio of 40:8:3, placing the mixture in a high-speed blending machine, stirring for 10min at 90 ℃ and 600rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a spinneret orifice to form a long fiber web, hot-pressing the long fiber web by a hot press to form, cooling and shaping the long fiber web, and obtaining the polyethylene fiber with a gram weight of 30g/m 2 Cutting the non-woven fabrics into the same size, namely an upper layer and a lower layer;
(3) Mixing thiourea dioxide with peracetic acid solution with the mass fraction of 1% under ice bath condition, reacting for 3 hours, filtering, washing with absolute ethyl alcohol for 3 times, and drying in a vacuum drying oven at 50 ℃ to constant weight to obtain thiourea dioxide; mixing deionized water, potassium carbonate and 4-aminophthalic acid according to the mass ratio of 7:1:1.5, stirring until the mixture is dissolved, adding thiourea trioxide with the mass of 0.8 times of the 4-aminophthalic acid for 5 times, reacting for 4 hours at room temperature after the addition is completed for 10 minutes, standing for 24 hours, filtering, washing for 3 times by acetone, dispersing in the deionized water with the mass of 8 times of the 4-aminophthalic acid, heating to 80 ℃, stirring until the mixture is dissolved, adding hydrochloric acid solution with the mass of 0.4 times of the mass of the 4-aminophthalic acid, filtering while the mixture is hot, standing for 10 hours, cooling to 4 ℃, filtering, and vacuum drying at 80 ℃ to obtain 4-guanidino-phthalic acid hydrochloride;
(4) Dispersing polylactic acid in 1, 4-dioxane with the mass of 12 times of that of the polylactic acid, heating to 50 ℃, performing ultrasonic treatment at 40kHz for 10min, dripping an ethanolamine solution with the mass of 1.3 times of that of the polylactic acid and the mass fraction of 1 percent at the rate of 5ml/min, continuing to react for 20min, transferring to a refrigerator with the temperature of minus 40 ℃ for freezing for 10h, extracting in the refrigerator with the temperature of minus 4 ℃ for 4d, changing water three times a day during extraction, and finally, freeze-drying in a freeze dryer with the temperature of minus 50 ℃ to obtain the hydroxyl polylactic acid; mixing dichloromethane, dimethylformamide, hydroxy polylactic acid and 4-guanidino phthalic acid hydrochloride according to a mass ratio of 8:2:1.5:0.5, stirring for 1h at 30rpm to obtain an electrostatic spinning solution, and carrying out electrostatic spinning, wherein the receiving distance is 15-18 cm, the push injection speed of the spinning solution is 1mL/h, the relative humidity is 45%, the temperature is 23 ℃, and the voltage of two electrodes is 15kV, so as to obtain a composite film;
(5) Sequentially paving a lower layer, a composite film and an upper layer, scraping edges, hot-pressing for 3min on a hot press at 90 ℃, cooling to room temperature, soaking in an acetone solution with the mass fraction of 90% for 4min, taking out, and naturally airing to obtain the breathable high-elastic mask fabric.
Example 2
(1) Mixing a silane coupling agent KH560, triethylene tetramine and absolute ethyl alcohol according to the mass ratio of 1:2.2:18, and reacting for 22 hours at room temperature to obtain a solution A; mixing graphene oxide with deionized water according to a mass ratio of 1:18, and performing ultrasonic treatment at 45kHz for 0.5h to obtain a solution B; mixing the solution A and the solution B according to a mass ratio of 4.5:1, regulating the pH value to 5 by acetic acid, heating to 85 ℃ for reaction for 22 hours, carrying out suction filtration after the reaction is finished, flushing the reaction product with absolute ethyl alcohol and deionized water for 6 times, and finally drying the reaction product in a vacuum drying oven at 55 ℃ to constant weight to obtain the amino graphene oxide; mixing pyridine-2, 3-dicarboxylic acid and absolute ethyl alcohol according to a mass ratio of 3:18, regulating the pH value to 6.5 by using ammonia water, dropwise adding a 5% calcium nitrate ethanol solution at a mass fraction of 6ml/min, regulating the pH value to 6.5 by using ammonia water, adding amino graphene oxide with the mass of 4 times that of the pyridine-2, 3-dicarboxylic acid, stirring at 60rpm for reaction for 30 hours, standing for 6 hours after the reaction, carrying out suction filtration, washing for 4 times by using absolute ethyl alcohol, washing for 2 times by using acetone, transferring to a 55 ℃ drying box, and drying to constant weight to obtain modified graphene oxide;
(2) Mixing polybutylene terephthalate, modified graphene oxide and tannic acid according to the mass ratio of 45:10:5, placing the mixture in a high-speed blending machine, stirring for 15min at 105 ℃ and 800rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a spinneret orifice to form a long fiber web, hot-pressing the long fiber web by a hot press to form, cooling and shaping the long fiber web, and obtaining the fiber with the gram weight of 40g/m 2 Cutting the non-woven fabrics into the same size, namely an upper layer and a lower layer;
(3) Mixing thiourea dioxide with peracetic acid solution with the mass fraction of 2% under ice bath condition, reacting for 3-3.5 h, filtering, washing with absolute ethyl alcohol for 4 times, and drying in a vacuum drying oven at 55 ℃ to constant weight to obtain thiourea trioxide; mixing deionized water, potassium carbonate and 4-aminophthalic acid according to the mass ratio of 7.5:1.2:2, stirring until the mixture is dissolved, adding thiourea trioxide with the mass of 0.85 times of 4-aminophthalic acid for 6 times, reacting for 5 hours at room temperature after the addition is completed, standing for 24 hours, filtering, washing for 4 times by acetone, dispersing in deionized water with the mass of 9 times of 4-aminophthalic acid, heating to 85 ℃, stirring until the mixture is dissolved, adding hydrochloric acid solution with the mass of 0.45 times of the mass of 4-aminophthalic acid, filtering while the mixture is hot after the mixture is reacted for 0.5 hours, standing for 11 hours, cooling to 4 ℃, filtering, and vacuum drying at 85 ℃ to obtain 4-guanidino-phthalic acid hydrochloride;
(4) Dispersing polylactic acid in 1, 4-dioxane with 13 times of the mass of the polylactic acid, heating to 55 ℃, performing ultrasonic treatment at 45kHz for 20min, dripping an ethanolamine solution with 1.4 times of the mass of the polylactic acid and 2% of the mass fraction at a rate of 6ml/min, continuing to react for 25min, transferring to a refrigerator with the temperature of-43 ℃ for freezing for 11h, extracting in the refrigerator with the temperature of-4 ℃ for 4d, changing water for three times each day during extraction, and finally performing freeze drying in a freeze dryer with the temperature of-55 ℃ to obtain the hydroxyl polylactic acid; mixing dichloromethane, dimethylformamide, hydroxy polylactic acid and 4-guanidino phthalic acid hydrochloride according to a mass ratio of 8:2:2:1, stirring for 2 hours at 40rpm to obtain an electrostatic spinning solution, and carrying out electrostatic spinning, wherein the receiving distance is 16cm, the injection speed of the spinning solution is 2mL/h, the relative humidity is 50%, the temperature is 25 ℃, and the voltage of two poles is 16kV, so as to obtain a composite film;
(5) Sequentially paving a lower layer, a composite film and an upper layer, scraping edges, hot-pressing for 4min on a hot press at 105 ℃, cooling to room temperature, soaking in 93% acetone solution for 5min, taking out, and naturally airing to obtain the breathable high-elastic mask fabric.
Example 3
(1) Mixing a silane coupling agent KH560, triethylene tetramine and absolute ethyl alcohol according to the mass ratio of 1:2.5:20, and reacting for 24 hours at room temperature to obtain a solution A; mixing graphene oxide with deionized water according to a mass ratio of 1:20, and performing ultrasonic treatment at 50kHz for 1h to prepare a solution B; mixing the solution A and the solution B according to a mass ratio of 5:1, regulating the pH value to 5.5 by using acetic acid, heating to 90 ℃ for reaction for 24 hours, carrying out suction filtration after the reaction is finished, flushing with absolute ethyl alcohol and deionized water for 8 times, and finally drying in a vacuum drying oven at 60 ℃ to constant weight to obtain the amino graphene oxide; mixing pyridine-2, 3-dicarboxylic acid and absolute ethyl alcohol according to a mass ratio of 3:20, regulating the pH value to 7 by using ammonia water, dropwise adding 8% calcium nitrate ethanol solution at a mass fraction of 8ml/min, regulating the pH value to 7 by using ammonia water, adding 5 times of amino graphene oxide by mass of pyridine-2, 3-dicarboxylic acid, stirring at 80rpm for reaction for 36h, standing for 8h, carrying out suction filtration, washing 5 times by using absolute ethyl alcohol, washing 5 times by using acetone, transferring to a drying box at 60 ℃, and drying to constant weight to obtain modified graphene oxide;
(2) Mixing polybutylene terephthalate, modified graphene oxide and tannic acid according to the mass ratio of 50:15:7, placing the mixture in a high-speed blending machine, stirring for 20min at 120 ℃ and 1000rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a spinneret orifice to form a long fiber web, hot-pressing the long fiber web by a hot press to form, cooling and shaping the long fiber web, and obtaining the fiber with the gram weight of 50g/m 2 Cutting the non-woven fabrics into the same size, namely an upper layer and a lower layer;
(3) Mixing thiourea dioxide with 3% peracetic acid solution in mass fraction under ice bath condition, reacting for 3.5h, filtering, washing with absolute ethyl alcohol for 5 times, and drying in a vacuum drying oven at 60 ℃ to constant weight to obtain thiourea trioxide; mixing deionized water, potassium carbonate and 4-aminophthalic acid according to the mass ratio of 8:1.5:3, stirring until the mixture is dissolved, adding thiourea trioxide with the mass of 0.9 times of the 4-aminophthalic acid for 8 times, reacting for 6 hours at room temperature after the addition is completed for 15 minutes, standing for 24 hours, filtering, washing for 5 times by acetone, dispersing in the deionized water with the mass of 8-10 times of the 4-aminophthalic acid, heating to 90 ℃, stirring until the mixture is dissolved, adding hydrochloric acid solution with the mass of 0.5 times of the mass of the 4-aminophthalic acid, filtering while the mixture is hot, standing for 12 hours, cooling to 5 ℃, filtering, and vacuum drying at 90 ℃ to obtain 4-guanidino-phthalic acid hydrochloride;
(4) Dispersing polylactic acid in 1, 4-dioxane with 15 times of the mass of the polylactic acid, heating to 60 ℃, performing ultrasonic treatment at 50kHz for 30min, dripping an ethanolamine solution with 1.5 times of the mass of the polylactic acid and 1-3% of the mass fraction at the rate of 8ml/min, continuing to react for 30min, transferring to a refrigerator with the temperature of minus 45 ℃ for freezing for 12h, extracting in the refrigerator with the temperature of minus 5 ℃ for 5d, changing water three times a day during extraction, and finally, freeze-drying in a freeze dryer with the temperature of minus 60 ℃ to obtain the hydroxyl polylactic acid; mixing dichloromethane, dimethylformamide, hydroxy polylactic acid and 4-guanidino phthalic acid hydrochloride according to a mass ratio of 8:2:3:1.5, stirring for 3 hours at 50rpm to obtain an electrostatic spinning solution, and carrying out electrostatic spinning, wherein the receiving distance is 18cm, the injection speed of the spinning solution is 3mL/h, the relative humidity is 55%, the temperature is 27 ℃, and the voltage of two poles is 18kV, so as to obtain a composite membrane;
(5) Sequentially paving a lower layer, a composite film and an upper layer, scraping edges, hot-pressing for 5min on a hot press at 120 ℃, cooling to room temperature, soaking in an acetone solution with the mass fraction of 95% for 6min, taking out, and naturally airing to obtain the breathable high-elastic mask fabric.
Comparative example 1
The recipe of comparative example 1 was the same as in example 2. The preparation method of the breathable high-elastic mask fabric is different from that of the embodiment 2 only in the steps (1) and (2), and the steps (1) and (2) are modified as follows:
(1) Mixing a silane coupling agent KH560, triethylene tetramine and absolute ethyl alcohol according to the mass ratio of 1:2.2:18, and reacting for 22 hours at room temperature to obtain a solution A; mixing graphene oxide with deionized water according to a mass ratio of 1:18, and performing ultrasonic treatment at 45kHz for 0.5h to obtain a solution B; mixing the solution A and the solution B according to a mass ratio of 4.5:1, regulating the pH value to 5 by acetic acid, heating to 85 ℃ for reaction for 22 hours, carrying out suction filtration after the reaction is finished, flushing the reaction product with absolute ethyl alcohol and deionized water for 6 times, and finally drying the reaction product in a vacuum drying oven at 55 ℃ to constant weight to obtain the amino graphene oxide;
(2) Mixing polybutylene terephthalate, amino graphene oxide and tannic acid according to the mass ratio of 45:10:5, placing the mixture in a high-speed blending machine, stirring the mixture for 15min at 105 ℃ and 800rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a wire spraying hole to form a long fiber web, hot-pressing the long fiber web by a hot press to form, and cooling and shaping the long fiber web to obtain the polyethylene fiber with the gram weight of 40g/m 2 Is cut into the same size, namely an upper layer and a lower layer.
Comparative example 2
The recipe for comparative example 2 was the same as that of example 2. The preparation method of the breathable high-elastic mask fabric is different from that of the embodiment 2 only in that the treatment of the step (1) is not performed, and the step (2) is modified as follows: mixing polybutylene terephthalate, graphene oxide and tannic acid according to a mass ratio of 45:10:5, placing the mixture in a high-speed blending machine, stirring the mixture for 15min at 105 ℃ and 800rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a wire spraying hole to form a long fiber web, hot-pressing the long fiber web by a hot press to form, cooling and shaping the long fiber web, and obtaining the fiber with a gram weight of 40g/m 2 Is cut into the same size, namely an upper layer and a lower layer.
Comparative example 3
The recipe for comparative example 3 was the same as in example 2. The preparation method of the breathable high-elastic mask fabric is different from that of the embodiment 2 only in the step (2), and the step (2) is modified as follows: mixing polybutylene terephthalate and modified graphene oxide according to a mass ratio of 45:10, placing the mixture in a high-speed blending machine, stirring for 15min at 105 ℃ and 800rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a spinneret orifice to form a long fiber web, hot-pressing the long fiber web by a hot press to form, cooling and shaping the long fiber web, and obtaining the fiber with a gram weight of 40g/m 2 Cutting the non-woven fabrics into the same size, namely an upper layer and a lower layer; .
Comparative example 4
The recipe for comparative example 4 was the same as in example 2. The preparation method of the breathable high-elastic mask fabric is different from that of the embodiment 2 only in that the treatment of the step (3) is not performed, and the step (4) is modified as follows: dispersing polylactic acid in 1, 4-dioxane with 13 times of the mass of the polylactic acid, heating to 55 ℃, performing ultrasonic treatment at 45kHz for 20min, dripping an ethanolamine solution with 1.4 times of the mass of the polylactic acid and 2% of the mass fraction at a rate of 6ml/min, continuing to react for 25min, transferring to a refrigerator with the temperature of-43 ℃ for freezing for 11h, extracting in the refrigerator with the temperature of-4 ℃ for 4d, changing water for three times each day during extraction, and finally performing freeze drying in a freeze dryer with the temperature of-55 ℃ to obtain the hydroxyl polylactic acid; mixing dichloromethane, dimethylformamide and hydroxyl polylactic acid according to a mass ratio of 8:2:2, stirring for 2 hours at 40rpm to obtain an electrostatic spinning solution, and carrying out electrostatic spinning, wherein the receiving distance is 15-18 cm, the injection speed of the spinning solution is 2mL/h, the relative humidity is 50%, the temperature is 25 ℃, and the voltage of two poles is 16kV, so that the composite membrane is obtained.
Comparative example 5
The recipe for comparative example 5 was the same as in example 2. The preparation method of the breathable high-elastic mask fabric is different from that of the embodiment 2 only in the step (5), and the step (5) is modified as follows: sequentially paving a lower layer, a composite film and an upper layer, scraping edges, hot-pressing for 5min on a hot press at 120 ℃, and cooling to room temperature to obtain the breathable high-elastic mask fabric.
Effect example
The results of the performance analysis of the breathable high-elastic mask fabrics of examples 1, 2,3 and comparative examples 1, 2,3, 4, 5 according to the present invention are shown in table 1 below.
TABLE 1
As is obvious from comparison of experimental data of examples in table 1 and comparative examples, the breathable high-elastic mask fabrics prepared in examples 1, 2 and 3 have better elasticity, heat resistance, breathability, antibacterial property and anti-fouling property;
from comparison of experimental data of examples 1, 2 and 3 and comparative examples 1, 2 and 3, it can be found that when preparing polybutylene terephthalate composite master batches for upper and lower non-woven fabrics, modified graphene oxide is introduced, calcium ions interact with amino graphene oxide sheets, elasticity of the non-woven fabrics is improved, pyridine is introduced, hydrophilicity is enhanced, and the modified graphene oxide is crosslinked on polybutylene terephthalate by tannic acid, so that crystallinity is improved, and heat resistance of the non-woven fabrics is improved; as can be found from the comparison of the experimental data of the examples 1, 2,3 and the comparative examples 4 and 5, the composite membrane prepared by compositing the hydroxyl polylactic acid and the 4-guanidino-phthalic acid hydrochloride has better antibacterial property, and the 4-guanidino-phthalic acid hydrochloride can reduce the distance between the porous superfine fibers and enhance the filtering performance; and when the upper layer and the lower layer are attached to the middle layer composite film, the acetone is used for swelling treatment, so that the air permeability is enhanced, nanometer bulges are formed on the surface of the swelled non-woven fabric, so that the hydrophilic upper layer and the hydrophilic lower layer can form a hydration layer, and the mask fabric has anti-fouling performance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The breathable high-elastic mask fabric comprises an upper layer, a middle layer and a lower layer, and is characterized in that the upper layer and the lower layer are non-woven fabrics; the middle layer is a composite film;
the composite film is prepared by the following method: mixing dichloromethane, dimethylformamide, hydroxy polylactic acid and 4-guanidino phthalic acid hydrochloride according to a mass ratio of 8:2:1.5:0.5-8:2:3:1.5, stirring for 1-3 hours at 30-50 rpm to obtain an electrostatic spinning solution, and carrying out electrostatic spinning to obtain a composite film;
the preparation method of the 4-guanidino phthalic acid hydrochloride comprises the following steps: mixing thiourea dioxide with peracetic acid solution with the mass fraction of 1-3% under the ice bath condition, reacting for 3-3.5 h, filtering, washing with absolute ethyl alcohol for 3-5 times, and drying in a vacuum drying oven at 50-60 ℃ to constant weight to obtain thiourea dioxide; mixing deionized water, potassium carbonate and 4-aminophthalic acid according to the mass ratio of 7:1:1.5-8:1.5:3, stirring until the mixture is dissolved, adding thiourea trioxide with the mass of 0.8-0.9 times of 4-aminophthalic acid for 5-8 times, reacting for 10-15 min at room temperature for 4-6 h after the addition is completed, standing for 24h, filtering, washing for 3-5 times by acetone, dispersing the mixture into deionized water with the mass of 8-10 times of 4-aminophthalic acid, heating to 80-90 ℃, stirring until the mixture is dissolved, adding hydrochloric acid solution with the mass of 0.4-0.5 times of the mass of 36-38% for reacting for 0.5-1 h, filtering while the mixture is hot, standing for 10-12 h, cooling to 4-5 ℃, filtering, and vacuum drying at 80-90 ℃ to obtain 4-guanidino phthalic acid hydrochloride.
2. The breathable high-elastic mask fabric according to claim 1, wherein the non-woven fabric is prepared by melt-blowing polybutylene terephthalate composite master batch; the polybutylene terephthalate composite master batch is prepared by introducing modified graphene oxide on a polybutylene terephthalate terminal group; the modified graphene oxide is prepared by reacting amino graphene oxide with pyridine-2, 3-dicarboxylic acid calcium.
3. The breathable high-elastic mask fabric according to claim 1, wherein the hydroxyl polylactic acid is prepared by reacting ethanolamine with polylactic acid.
4. The preparation method of the breathable high-elastic mask fabric is characterized by comprising the following specific steps of:
(1) Mixing pyridine-2, 3-dicarboxylic acid and absolute ethyl alcohol according to a mass ratio of 3:15-3:20, regulating the pH to 6-7 by using ammonia water, dropwise adding a calcium nitrate ethanol solution with a mass fraction of 3-8% at a rate of 5-8 ml/min, regulating the pH to 6-7 by using ammonia water, adding amino graphene oxide with a mass 3-5 times that of pyridine-2, 3-dicarboxylic acid, stirring and reacting for 24-36 h at 50-80 rpm, standing for 5-8 h, carrying out suction filtration, washing for 3-5 times by using absolute ethyl alcohol, washing for 3-5 times by using acetone, transferring to a drying box with a temperature of 50-60 ℃ and drying to constant weight to obtain modified graphene oxide;
(2) Mixing polybutylene terephthalate, modified graphene oxide and tannic acid according to a mass ratio of 40:8:3-50:15:7, placing the mixture into a high-speed blending machine, stirring the mixture for 10-20 min at 90-120 ℃ and 600-1000 rpm, transferring the mixture into a wire drawing machine, drawing the mixture through a wire spraying hole to form a long fiber web, hot-pressing the long fiber web through a hot press, cooling and shaping the long fiber web to obtain non-woven fabrics, and cutting the non-woven fabrics into upper layers and lower layers with the same size;
(3) Mixing dichloromethane, dimethylformamide, hydroxy polylactic acid and 4-guanidino phthalic acid hydrochloride according to a mass ratio of 8:2:1.5:0.5-8:2:3:1.5, stirring for 1-3 hours at 30-50 rpm to obtain an electrostatic spinning solution, and carrying out electrostatic spinning to obtain a composite film;
(4) Sequentially paving a lower layer, a composite film and an upper layer, scraping edges, hot-pressing for 3-5 min on a hot press at 90-120 ℃, cooling to room temperature, soaking in an acetone solution with the mass fraction of 90-95%, soaking for 4-6 min, taking out, and naturally airing to obtain the breathable high-elastic mask fabric.
5. The method for producing breathable and high-elastic mask fabric according to claim 4, wherein in the step (1): the preparation method of the amino graphene oxide comprises the following steps: mixing a silane coupling agent KH560, triethylene tetramine and absolute ethyl alcohol according to a mass ratio of 1:2:15-1:2.5:20, and reacting for 20-24 hours at room temperature to obtain a solution A; mixing graphene oxide and deionized water according to a mass ratio of 1:15-1:20, and performing ultrasonic treatment at 40-50 kHz for 0.5-1 h to obtain a solution B; mixing the solution A and the solution B according to a mass ratio of 4:1-5:1, regulating the pH to 5-5.5 by using acetic acid, heating to 80-90 ℃ for reacting for 20-24 hours, carrying out suction filtration after the reaction is finished, flushing with absolute ethyl alcohol and deionized water for 5-8 times, and finally drying in a vacuum drying oven at 50-60 ℃ to constant weight to obtain the amino graphene oxide.
6. The method for producing breathable and high-elastic mask fabric according to claim 4, wherein in the step (2): the gram weight of the non-woven fabric is 30-50 g/m 2 。
7. The method for producing breathable and high-elastic mask fabric according to claim 4, wherein in the step (3): the preparation method of the hydroxyl polylactic acid comprises the following steps: dispersing polylactic acid in 1, 4-dioxane with the mass of 12-15 times of that of the polylactic acid, heating to 50-60 ℃, carrying out ultrasonic treatment at 40-50 kHz for 10-30 min, dripping ethanolamine solution with the mass of 1.3-1.5 times of that of the polylactic acid and the mass fraction of 1-3% at the rate of 5-8 ml/min, continuing to react for 20-30 min, cooling in a refrigerator with the temperature of-40 to-45 ℃ for 10-12 h, extracting in the refrigerator with the temperature of-4 to-5 ℃ for 4-5 d, changing water three times per day during extraction, and finally freeze-drying in a freeze dryer with the temperature of-50 to-60 ℃ to obtain the hydroxyl polylactic acid.
8. The method for producing breathable and high-elastic mask fabric according to claim 4, wherein in the step (3): in electrostatic spinning, the receiving distance is 15-18 cm, the pushing speed of the spinning solution is 1-3 mL/h, the relative humidity is 45-55%, the temperature is 23-27 ℃, and the voltage of the two electrodes is 15-18 kV.
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