CN117845618A - Polypropylene fiber cloth with water super-spreading function and preparation method and application thereof - Google Patents
Polypropylene fiber cloth with water super-spreading function and preparation method and application thereof Download PDFInfo
- Publication number
- CN117845618A CN117845618A CN202211205620.XA CN202211205620A CN117845618A CN 117845618 A CN117845618 A CN 117845618A CN 202211205620 A CN202211205620 A CN 202211205620A CN 117845618 A CN117845618 A CN 117845618A
- Authority
- CN
- China
- Prior art keywords
- fiber cloth
- polypropylene fiber
- hydrophilic polymer
- super
- spreading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- -1 Polypropylene Polymers 0.000 title claims abstract description 206
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 205
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 205
- 239000000835 fiber Substances 0.000 title claims abstract description 195
- 239000004744 fabric Substances 0.000 title claims abstract description 146
- 238000003892 spreading Methods 0.000 title claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 229920001477 hydrophilic polymer Polymers 0.000 claims abstract description 110
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 25
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 51
- 239000004745 nonwoven fabric Substances 0.000 claims description 49
- 238000004132 cross linking Methods 0.000 claims description 29
- 239000003431 cross linking reagent Substances 0.000 claims description 21
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 13
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 10
- 230000009477 glass transition Effects 0.000 claims description 10
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 9
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 9
- 238000000967 suction filtration Methods 0.000 claims description 9
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004327 boric acid Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 229920002873 Polyethylenimine Polymers 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- 239000012267 brine Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010612 desalination reaction Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 239000004584 polyacrylic acid Substances 0.000 claims description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- 229920003169 water-soluble polymer Polymers 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229920001744 Polyaldehyde Polymers 0.000 claims description 2
- 150000001299 aldehydes Chemical class 0.000 claims description 2
- 229920006037 cross link polymer Polymers 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 238000003475 lamination Methods 0.000 claims description 2
- 150000007519 polyprotic acids Polymers 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 210000002700 urine Anatomy 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 102000004169 proteins and genes Human genes 0.000 claims 1
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 230000004048 modification Effects 0.000 abstract description 13
- 238000012986 modification Methods 0.000 abstract description 13
- 239000000523 sample Substances 0.000 description 25
- 238000012360 testing method Methods 0.000 description 18
- 239000007864 aqueous solution Substances 0.000 description 16
- 238000011282 treatment Methods 0.000 description 13
- 239000007788 liquid Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 9
- 239000004750 melt-blown nonwoven Substances 0.000 description 9
- 238000009210 therapy by ultrasound Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000001338 self-assembly Methods 0.000 description 8
- 230000007480 spreading Effects 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 5
- 229920005603 alternating copolymer Polymers 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- ZENQDFZLYGBUOH-UHFFFAOYSA-L C(C=C/C(=O)[O-])(=O)[O-].[Na+].[Na+].CC(C)=C Chemical group C(C=C/C(=O)[O-])(=O)[O-].[Na+].[Na+].CC(C)=C ZENQDFZLYGBUOH-UHFFFAOYSA-L 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 241000283973 Oryctolagus cuniculus Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 210000004087 cornea Anatomy 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000002121 nanofiber Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000006136 alcoholysis reaction Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- MSJMDZAOKORVFC-UAIGNFCESA-L disodium maleate Chemical compound [Na+].[Na+].[O-]C(=O)\C=C/C([O-])=O MSJMDZAOKORVFC-UAIGNFCESA-L 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 238000000724 energy-dispersive X-ray spectrum Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- RPOCFUQMSVZQLH-UHFFFAOYSA-N furan-2,5-dione;2-methylprop-1-ene Chemical group CC(C)=C.O=C1OC(=O)C=C1 RPOCFUQMSVZQLH-UHFFFAOYSA-N 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 238000009423 ventilation 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/06—Inorganic compounds or elements
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
- D06M10/10—Macromolecular compounds
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/80—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
- D06M11/82—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boron oxides; with boric, meta- or perboric acids or their salts, e.g. with borax
-
- 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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/12—Aldehydes; Ketones
- D06M13/123—Polyaldehydes; Polyketones
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the technical field of new material preparation, in particular to polypropylene fiber cloth with water super-spreading, and a preparation method and application thereof. The super-spreading polypropylene fiber cloth comprises a polypropylene fiber cloth substrate and a hydrophilic polymer, wherein the content of the hydrophilic polymer is 0.01% -7% based on 100% of the mass of the super-spreading polypropylene fiber cloth; the static contact angle of the polypropylene fiber cloth with water can reach 0 degree in no more than 1 second. The method for preparing the polypropylene fiber cloth does not need any pretreatment such as grafting modification and the like on the polypropylene fiber cloth, and the super-spreading polypropylene fiber cloth can be obtained by directly contacting with hydrophilic polymer and by means of external force.
Description
Technical Field
The invention relates to the technical field of new material preparation, in particular to polypropylene fiber cloth with water super-spreading, and a preparation method and application thereof.
Background
The non-woven fabric, also called non-woven fabric or non-woven fabric, is one of polypropylene fiber fabrics; the non-woven fabric is fiber cloth formed by fiber orientation or random, and generally has the characteristics of ventilation and light weight. Nonwoven fabrics are nonwoven fabrics which are produced by directly using polymer chips, staple fibers or filaments to web the fibers by air flow or mechanically, then by hydroentangling, needling, or hot-rolling to consolidate, and finally by finishing to form a nonwoven fabric. The novel fiber product with soft, breathable and planar structure has the advantages of no generation of fiber scraps, toughness, durability, silky softness, cotton feeling, easy forming of the bag of the non-woven fabric compared with cotton, and low cost.
Common materials for preparing the non-woven fabrics comprise polypropylene, polyethylene, polyester, polyamide and other materials, wherein the most used materials are polypropylene non-woven fabrics. At present, polypropylene nonwoven fabrics are widely applied to the fields of masks, protective clothing, geomembranes and the like, however, the polypropylene nonwoven fabrics are poor in hydrophilicity and hygroscopicity, and the contact angle with water is usually about 130 degrees, so that the application field of the polypropylene nonwoven fabrics is limited. For example, there are limitations in wet tissues, facial masks, medical gauze, sewage treatment, filtration cloths, functionalized polypropylene nonwoven fabrics, and the like. Particularly in the fields of high-efficiency separation, biological fouling resistance and the like which need super-hydrophilicity and super-spreadability, the traditional polypropylene non-woven fabric cannot be used. Supersensing refers to the fact that a small volume droplet (less than 2 μl, excluding the influence of gravity) can achieve a contact angle of 0 ° quickly after being fully in contact with the object surface. Compared with the traditional super-hydrophilic material (the contact angle is smaller than 5 ℃), the material with super-spreading performance has better hydrophilicity, can enable liquid to be rapidly transferred and flowed in the material, has high flux, and has remarkable advantages in the fields of separation, filtration and the like.
Currently, most of the disclosed or reported water super-spreading materials are naturally occurring materials, such as Miao et al, which found that the cornea of a white rabbit eye possesses super-spreading properties that can reduce the Contact Angle (CA) to 0 ° in 1 s. According to the structural analysis of rabbit cornea, a nanofiber array mold is designed, and the hydrogel of the nanofiber array is obtained through reverse molding, and the time for changing the contact angle to 0 degree can be reduced to 0.45s. Cellulose ultrafine fiber membranes with super-spreading effect were prepared using the electrospinning method in Zheng et al, article 2D prior spreading inspired from Chinese Xuan papers (adv. Funct. Mater.2018,28,1800832). In the material, cellulose fiber forms a superfine fiber structure, the surface of the cellulose contains hydrophilic groups, the surface of the cellulose contains micropores with very small pore diameters, and the super-spreading effect is formed under the combined action of the cellulose fiber and the micropores. The super-spreading materials disclosed at present are all hydrophilic polymer matrixes, and excellent hydrophilic performance is realized through the structural design of a load; and the material used in the prior art has higher cost, complex preparation process and difficult realization of industrialization. Polyolefin materials are the most prominent synthetic resins worldwide, and particularly polypropylene materials are widely used in the fields of construction, medical treatment and the like. The Chinese patent CN114133612A discloses a bionic super-spreading surface which has a protruding honeycomb structure and is similar to the surface of natural plants, and the water contact angle of the surface is reduced to below 60 degrees by modifying a hydrophilic material. This technique does not reduce the water contact angle to 0 °. At present, a polypropylene material is an important component in a synthetic resin material and is widely applied to aspects of daily life. However, the polypropylene material has poor self-hydrophilicity, and although the hydrophilicity can be improved by grafting polar monomers or adding surfactants, the contact angle is difficult to reach 0 degrees, and the super-spreading is more difficult to realize.
Therefore, how to use polypropylene as a matrix to develop and obtain the super-spreading material which is easy to realize industrial continuous production has very important practical significance, can meet the requirements of the fields of separation, environmental protection and the like, and has great market space.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the polypropylene fiber cloth with super-spreading performance, and the preparation method and the application thereof, wherein the polypropylene fiber cloth has better hydrophilicity, and the static contact angle with water can reach 0 degree within 1 second, so that the application field range of the polypropylene fiber cloth is further widened; moreover, the method for preparing the polypropylene fiber cloth does not need any pretreatment such as grafting modification and the like on the polypropylene fiber cloth, and the super-spreading polypropylene fiber cloth can be obtained by directly contacting the polypropylene fiber cloth with hydrophilic polymer and by means of external force.
In a first aspect, the present invention provides a super-spreading polypropylene fiber cloth, wherein the super-spreading polypropylene fiber cloth comprises a polypropylene fiber cloth substrate and a hydrophilic polymer, and the content of the polypropylene fiber cloth substrate in the super-spreading polypropylene fiber cloth is 93% -99.99% based on 100% of the mass of the super-spreading polypropylene fiber cloth; the content of the hydrophilic polymer is 0.01% -7%; the static contact angle of the polypropylene fiber cloth with water can reach 0 degree in no more than 1 second.
According to the invention, the super-spreading polypropylene can reach 0 degree with the static contact angle of water in 1 second; more preferably, the static contact angle of water may reach 0 degrees in a time of 0.005 seconds to 1 second. For example, 0.005 seconds, 0.01 seconds, 0.05 seconds, 0.1 seconds, 0.5 seconds, 0.9 seconds, 1 second, and any two values or any interval of any two values may be used.
According to the present invention, the test of the time required for the static contact angle of the polypropylene fiber cloth with water to reach 0 degree can be performed by using a conventional detection method in the art. Including but not limited to the following methods: and (3) flatly attaching a fiber cloth sample to a glass slide, wherein in the attaching process, the sample is kept flat in the horizontal direction, then the glass slide is placed on a sample table of a contact angle measuring instrument for fixing, a water drop with the control volume of the instrument being less than 2 mu L is regulated to drop to the center of the sample, and an included angle from the inside of the liquid drop to the gas-liquid interface at the three-phase junction is measured, namely a static contact angle (water contact angle for short) is obtained. The time calculation starts after the drop contacts the surface of the fiber cloth and the lift is adjusted to leave the drop, until the drop fully spreads the contact angle to 0 degrees. The volume is controlled below 2 mu L to eliminate the influence of gravity, which better indicates that the polypropylene fiber cloth has good hydrophilic property and super-spreading property.
According to the present invention, the content of the polypropylene fiber cloth matrix in the polypropylene fiber cloth is more preferably 93% to 99.99%, preferably 95% to 99.95%, for example, 95%, 97%, 98.3%, 99%, 99.95%, and any two values or any interval of any two values, based on the total mass of the super-spread polypropylene fiber cloth being 100%.
According to the present invention, the content of the hydrophilic polymer is more preferably 0.01% to 7%, preferably 0.05% to 5%, for example 0.01%, 0.7%, 3%, 5%, and any two values or any interval of any two values, based on 100% of the total mass of the polypropylene fiber cloth.
Preferably, the sum of the content of the polypropylene fiber cloth matrix and the content of the hydrophilic polymer is 100%.
According to the invention, the mass content of the hydrophilic polymer in the polypropylene fiber cloth can be detected by a conventional detection method in the field. Including but not limited to the following methods: weighing unmodified polypropylene fiber cloth with mass m 1 The polypropylene fiber cloth was dried after being treated by the method shown in the examples, and the mass of the polypropylene fiber cloth was measured to be m 2 In percent (m 2 -m 1 )/m 2 The x 100% is the mass content of the hydrophilic polymer.
According to the present invention, the content of the hydrophilic polymer in the unit surface area of the polypropylene fiber cloth is selected to be wide, and in a preferred embodiment of the present invention, the content of the hydrophilic polymer in the unit surface area of the polypropylene fiber cloth is 0.005g/m 2 -3g/m 2 Preferably 0.005g/m 2 -2g/m 2， For example 0.005g/m 2 、1g/m 2 、2g/m 2 And any two values or any interval of any two values. According to the present invention, the content of the hydrophilic polymer in the unit surface area of the polypropylene fiber cloth can be detected using a conventional detection method in the art. Including but not limited to the following methods:
firstly, coating a sample to be tested on the surface by gold, then placing the coated sample on an SEM detection table, scanning a region of 5 mu m multiplied by 5 mu m on the sample by using SEM, and then measuring the polypropylene fiber cloth and the affinity before modification in the region by using EDS energy spectrumThe mass fraction of oxygen in the water modified polypropylene fiber cloth is respectively recorded as w 0 And w 1 The calculation is performed according to the following formula: w= (W) 1 -w 0 )/(M O /M A ) X M, wherein M O Is the relative atomic mass of oxygen, M A The molecular weight of a single chain link of the hydrophilic polymer is M, the surface density of the polypropylene fiber cloth is M, and W is the content of the hydrophilic polymer on the polypropylene fiber cloth in the unit area.
According to the invention, the polypropylene fiber cloth substrate has wide selectable range, and the fiber cloth substrate can be melt-blown polypropylene non-woven fabric, spun-bonded polypropylene non-woven fabric and the like.
According to the present invention, the fiber diameter of the polypropylene fiber cloth substrate may be selected to be wide, and in a preferred embodiment of the present invention, the fiber diameter is 20 micrometers or less, preferably 10 micrometers or less, and more preferably 0.1 to 10 micrometers.
The range of the fiber diameter of the polypropylene fiber cloth substrate in the present invention refers to the range of the nominal fiber diameter of the polypropylene fiber cloth substrate commercially available in the art or the statistical value obtained by detection. The present invention is also applicable to any case where the range of the nominal fiber diameter or the statistical value obtained by the detection is within the range of the present invention, and some (or several) fiber diameter ranges are not included in the range of the present application on the whole polypropylene fiber cloth substrate. The above method for measuring the fiber diameter may be carried out by conventional methods in the art, including but not limited to, observation of the fiber with a microscope such as an electron microscope, an optical microscope, and measurement statistics of the fiber diameter.
In a more preferred embodiment of the present invention, the hydrophilic polymer is selected from water-soluble polymers, preferably the hydrophilic polymer contains polar segments and non-polar segments, more preferably includes but is not limited to at least one of the following polymers and/or crosslinked polymers formed by at least one of the following polymers and a crosslinking agent: at least one of polyvinyl alcohol, polyacrylamide, polyethyleneimine, sodium polyacrylate, polyacrylic acid, maleic anhydride copolymer and derivatives thereof, polyethylene glycol, more preferably at least one of sodium polyacrylate, polyvinyl alcohol, maleic anhydride copolymer and derivatives thereof, and polyethylene glycol.
According to the present invention, the hydrophilic polymer may be subjected to a crosslinking reaction according to the use requirement, and the crosslinking agent may be selected from a wide range, and in a preferred embodiment of the present invention, the crosslinking agent is selected from at least one of a polyacid and a polyaldehyde, including but not limited to at least one of glutaraldehyde, boric acid.
According to the invention, the hydrophilic polymer has a wide selectable range, and in a preferred embodiment of the invention, the hydrophilic polymer can self-assemble on the fiber surface in the polypropylene fiber cloth matrix, the nonpolar chain segments in the hydrophilic polymer are assembled on the polypropylene fiber surface, and the polar chain segments are distributed on the fiber surface after being assembled, so that the hydrophilicity of the polypropylene fiber cloth is improved.
Preferably, the super-spreading polypropylene fiber cloth contains polypropylene fibers coated with hydrophilic polymers, and the phenomenon can be detected by a scanning electron microscope.
In a more preferred embodiment of the present invention, the super-spreading polypropylene fiber cloth is prepared by contacting a polypropylene fiber cloth substrate with a solution containing a hydrophilic polymer under an external force, wherein the content of the hydrophilic polymer in the solution containing a hydrophilic polymer is not more than 5wt%.
Under the concentration condition of the hydrophilic polymer and the action of external force, the contact utilizes intermolecular force to self-assemble the hydrophilic polymer on the fiber surface of the polypropylene fiber cloth, so as to obtain the super-spreading polypropylene fiber cloth with the polypropylene fibers coated by the hydrophilic polymer.
In a second aspect, the present invention provides a method for preparing the polypropylene fiber cloth according to the first aspect, which comprises contacting a polypropylene fiber cloth substrate with a solution containing a hydrophilic polymer under the action of an external force, wherein the content of the hydrophilic polymer in the solution containing the hydrophilic polymer is not higher than 5wt%, so as to obtain the super-spread polypropylene fiber cloth.
According to the technical scheme, the polypropylene fiber cloth substrate is contacted with the solution containing the hydrophilic polymer, and the hydrophilic polymer is self-assembled on the fiber surface of the polypropylene fiber cloth by utilizing intermolecular acting force, so that the super-spreading performance of the polypropylene fiber cloth is realized.
The method for preparing the polypropylene fiber cloth does not need any pretreatment such as grafting modification and the like on the polypropylene fiber cloth, and directly contacts with the solution of the hydrophilic polymer, and has the characteristics of high efficiency, low consumption and low cost.
According to the present invention, the content of the hydrophilic polymer in the hydrophilic polymer-containing solution may be selected within a wide range, and in a preferred embodiment of the present invention, the content of the hydrophilic polymer in the hydrophilic polymer-containing solution is 0.05 to 4.5wt%, preferably 0.1 to 4.5wt%, for example, 0.1wt%, 0.5wt%, 1wt%, 1.5wt%, 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%, 4.5wt%, and any two values or any interval of any two values, more preferably 0.3 to 3wt%.
In a more preferred embodiment of the present invention, the contacting is performed in a solution containing a hydrophilic polymer, such that the resulting polypropylene fiber cloth has more uniform superspreading properties.
According to the present invention, the contacting of the fibrous cloth with the hydrophilic polymer according to the present invention may be performed over a wide temperature range, preferably not exceeding the melting temperature of polypropylene and hydrophilic polymer, more preferably not exceeding the glass transition temperature of hydrophilic polymer.
According to the present invention, the preparation method further comprises a step of drying after the polypropylene fiber cloth substrate is contacted with the hydrophilic polymer; specifically, the drying temperature does not exceed the melting temperature of the fibrous web substrate and the hydrophilic polymer, more preferably does not exceed the glass transition temperature of the hydrophilic polymer.
According to the invention, the hydrophilic polymer can be quickly assembled by using external force in the process of self-assembling on the surface of the polypropylene fiber, wherein the external force comprises one or more of ultrasonic, rolling, suction filtration, lamination, mould pressing and the like.
According to the present invention, the condition range of the external force effect is wide, such as the processing time, the processing times and the processing conditions of the processing method are related, and there is no specific limitation.
The conditions of the ultrasonic treatment in the present invention may be widely selected, and in a preferred embodiment of the present invention, the conditions of the ultrasonic treatment include: the frequency of the ultrasound is not lower than 5kHz, preferably not lower than 10kHz; for example 10kHz, 20kHz, 30kHz, 40kHz, 45kHz, 50kHz, 55kHz, 60kHz. The greater the ultrasonic power, the fewer inter-and number of actions.
According to the present invention, the ultrasonic treatment apparatus may be selected from conventional ultrasonic treatment apparatuses including, but not limited to, an ultrasonic cleaning station, a cell pulverizer, an ultrasonic probe, an industrial ultrasonic device, and the like. The power of the specific ultrasonic treatment apparatus is also not particularly limited, and the power is preferably 50 to 750W, more preferably 50 to 500W, still more preferably 150 to 350W.
The time of the ultrasonic treatment in the preparation step according to the present invention may be selected in a wide range, and the ultrasonic time is related to the concentration of the solution, the diameter of the fiber, the areal density, and the process conditions according to the embodiments of the present invention are preferably not less than 5 minutes, more preferably 10 to 120 minutes, and may be, for example, 10 minutes, 20 minutes, 30 minutes, 40 minutes, 60 minutes, 100 minutes, 120 minutes, and the like.
In another preferred embodiment of the present invention, the conditions for suction filtration may be selected in a wide range, and the treatment time and the number of treatments may be reduced as the vacuum degree increases. In a preferred embodiment of the present invention, the conditions for suction filtration include: the vacuum degree is not lower than 5Pa, preferably not lower than 10Pa, and/or the suction filtration time is not shorter than 1 second, preferably not lower than 5 seconds. Preferably, the hydrophilic polymer solution is still kept in a soaked state on the polypropylene fiber cloth substrate before the suction filtration is stopped.
In a more preferred embodiment of the present invention, the preparation method may include the steps of:
the polypropylene fiber cloth substrate is contacted with a solution containing hydrophilic polymer under the action of external force in the solution containing hydrophilic polymer; immersing an aqueous solution of a hydrophilic polymer into the polypropylene fiber cloth substrate; and (5) drying. In a preferred embodiment of the present invention, the hydrophilic polymer is selected from at least one of water-soluble polymers, polyvinyl alcohol, polyacrylamide, polyethyleneimine, sodium polyacrylate, polyacrylic acid, maleic anhydride copolymer and derivatives thereof, polyethylene glycol, more preferably at least one of sodium polyacrylate, maleic anhydride copolymer and derivatives thereof, polyvinyl alcohol and polyethylene glycol.
According to the present invention, the molecular weight of the hydrophilic polymer is not particularly limited, and for example, the number average molecular weight may be 30000 to 300000. Taking the following examples of the present invention as an example, polyvinyl alcohol having a polymerization degree of 1700 may be selected, and maleic anhydride copolymer having a number average molecular weight of 260000-350000 and its derivatives may be selected; sodium polyacrylate with number average molecular weight of 260000-270000 can also be selected.
According to the present invention, the polypropylene fiber cloth substrate has a wide selection range, and may be, for example, melt-blown polypropylene nonwoven fabric, spun-bonded polypropylene nonwoven fabric, spun-laced polypropylene nonwoven fabric, or the like. In a preferred embodiment of the present invention, the polypropylene nonwoven substrate is a polypropylene melt blown nonwoven.
The polypropylene melt-blown fiber cloth has a wide optional range, preferably the polypropylene melt-blown fiber cloth has an areal density of 10-60g/m 2 Preferably 20-50g/m 2 And/or the fiber diameter is not greater than 20 microns, preferably 10 microns or less, more preferably 0.1-10 microns.
The range of the fiber diameter of the polypropylene fiber cloth substrate in the present invention refers to the range of the nominal fiber diameter of the polypropylene fiber cloth substrate commercially available in the art or the statistical value obtained by detection. The present invention is also applicable to any case where the range of the nominal fiber diameter or the statistical value obtained by the detection is within the range of the present invention, and some (or several) fiber diameter ranges are not included in the range of the present application on the whole polypropylene fiber cloth substrate. The above method for measuring the fiber diameter may be carried out by conventional methods in the art, including but not limited to, observation of the fiber with a microscope such as an electron microscope, an optical microscope, and measurement statistics of the fiber diameter.
The preparation method further comprises an optional step of crosslinking, which may be optionally performed according to the specific use.
When the step of crosslinking is included, the polypropylene fiber cloth substrate is contacted with the hydrophilic polymer, and the obtained polypropylene fiber cloth is subjected to crosslinking reaction in a solution containing a crosslinking agent.
The crosslinked hydrophilic polymer forms a network structure, so that the stability of the hydrophilic polymer in the fiber cloth is increased, and the hydrophilic stability is improved; however, as the cross-linked structure needs polar chain segments in the hydrophilic polymer to participate in the reaction, the polar chain segments on the surface of the polypropylene fiber are reduced, and the spreading time of the fiber cloth is influenced. Therefore, the stability of the spreading time and the super spreading performance of the crosslinked product is obviously different from that of the uncrosslinked product, and the crosslinked product can be used in the field of non-application.
The super-spreading performance stability refers to the degree of contact angle change after the hydrophilic fiber cloth is completely immersed in deionized water and treated for 5 minutes under the ultrasonic cleaning condition and repeated for 3 times. The smaller the contact angle variation, the better the hydrophilic stability thereof.
According to the present invention, the cross-linking agent is widely selected, and in a preferred embodiment of the present invention, the cross-linking agent is selected from at least one of a polybasic acid and a polybasic aldehyde, preferably at least one of glutaraldehyde and boric acid, and more preferably glutaraldehyde.
According to the present invention, the amount of the crosslinking agent in the solution containing the crosslinking agent may be selected within a wide range, and in a preferred embodiment of the present invention, the amount of the crosslinking agent in the solution containing the crosslinking agent is 0.005 to 0.8wt%, preferably 0.01 to 0.5wt%; and/or, the temperature conditions of crosslinking include:
according to the invention, the conditions of crosslinking can be chosen within a wide range, preferably the temperature of said crosslinking does not exceed the glass transition temperature of the hydrophilic polymer, preferably from 30 to 70 ℃; and/or the pH of the solution containing the cross-linking agent is 4-7; the crosslinking reaction time is 1min to 120min, preferably 1min to 90min, and may be, for example, 1min, 3min, 5min, 10min, 20min, 50min, 70min, 90min, and any two values or any interval of any two values.
The pH-adjusting raw material is not particularly limited in the present invention, and any acid-base raw material conventional in the art may be used.
According to the present invention, the fiber cloth subjected to the crosslinking treatment may be subjected to a cleaning treatment to remove the remaining crosslinking agent and the like. The mode of cleaning is not particularly limited, and the present invention includes, but is not limited to, rinsing with water, and cleaning under ultrasonic conditions is preferable in order to improve the cleaning efficiency. The ultrasonic conditions herein are not particularly limited in the present invention. For example, the frequency of the ultrasonic wave is 20 to 80kHz, and the time of ultrasonic cleaning is preferably 1 to 30 minutes/time, preferably 15 to 25 minutes/time, and the number of times of cleaning is selected from 1 to 5 times, preferably 2 to 4 times.
According to the invention, if the super-spreading polypropylene fiber cloth needs to be dried, the drying temperature is not higher than the glass transition temperature of the hydrophilic polymer. When the treatment temperature is higher than the glass transition temperature, the hydrophilic polymer generates molecular chain segment movement, so that the self-assembled structure is destroyed, and the super-spreading performance is affected.
The third aspect of the invention provides a super-spreading polypropylene fiber cloth, which is prepared by the preparation method in the second aspect.
In a fourth aspect, the present invention aims to provide the use of the super-spread polypropylene fiber cloth according to one of the first aspect and the third aspect in the following fields:
oil-water separation, brine desalination, wastewater treatment, ion concentration or extraction, suspended matter filtration, oil-containing rainwater separation and medical and sanitary articles.
According to the present invention, the application fields include, but are not limited to, oil-water separation, brine desalination, wastewater treatment, ion concentration or extraction, suspended matter filtration, oil-containing rainwater separation, etc., and can also be used for medical and sanitary products including, but not limited to, diaper, urine isolation pad, sanitary towel, auxiliary materials (for example, medical Wei Fuliao), etc.
Compared with the prior art, the invention has the following advantages:
the polypropylene fiber cloth has excellent hydrophilic performance, but can realize super spreading of water and contact angle of 0 degree within 1 second. The polypropylene fiber cloth can be used in the fields of oil-water separation, brine desalination, ion concentration or extraction, salt-containing wastewater treatment and the like, widens the application field range of the polypropylene fiber cloth, and realizes the high-value utilization of the polypropylene fiber cloth.
The polypropylene fiber cloth of the present invention has the above properties, and it has been unexpectedly found through the study of the present inventors that when the fiber diameter of the polypropylene fiber cloth is smaller than a certain size, capillary phenomenon occurs on the surface and inside of the fiber cloth, and the solution is contacted with the surface of the polypropylene fiber by the action of capillary force during the contact or impregnation with the hydrophilic polymer aqueous solution, or with the help of external force. When the content of the hydrophilic polymer in the hydrophilic polymer solution is not higher than 5wt%, the hydrophilic polymer molecular chains in the aqueous solution are uniformly dispersed, wherein a nonpolar chain segment (a chain segment without hydroxyl groups) has good compatibility with the same nonpolar polypropylene, and self-assembly combination occurs after the hydrophilic polymer molecular chains are contacted with the polypropylene fiber cloth substrate. In the process, the hydrophilic polymer separates and arranges the polar chain segments from the nonpolar chain segments, namely the nonpolar chain segments are coated on the surfaces of the polypropylene fibers, and the polar chain segments are exposed on the surfaces of the polypropylene fibers after self-assembly, so that the polypropylene fiber cloth has hydrophilic performance. By controlling the process conditions (such as external force effect, concentration of hydrophilic polymer, etc.), the thin self-assembly of the hydrophilic polymer on the surface of the polypropylene fiber can be realized. Through the combined action of capillary force and self-assembly, the polypropylene fiber cloth contains polypropylene fibers coated by hydrophilic polymers, and has super-spreading performance. The process can better occur under the action of external force, such as under the action of ultrasound, the solution of the hydrophilic polymer can rapidly enter between the fiber cloth fibers to promote the contact between the nonpolar chain segment and the surface of the polypropylene fibers, thereby accelerating the self-assembly speed and efficiency.
Furthermore, the method for preparing the polypropylene fiber cloth does not need any pretreatment such as grafting modification and the like, and has the characteristics of high efficiency, low consumption and low cost.
Drawings
Fig. 1 is an SEM (scanning electron microscope) image of a polypropylene fiber cloth in a blank (comparative example 1).
Fig. 2 is an SEM image of the polypropylene nonwoven fabric in example 1.
As shown in the blank electron microscope image in FIG. 1, the surface of the polypropylene nonwoven fabric is smooth, and filaments, films or other structures are not found in the fiber gaps. As shown in fig. 2, the fiber appearance and the fiber size of the blank sample in example 1 and comparative example 2 are not significantly different, which indicates that the hydrophilic polymer can have no effect on the morphology such as the polypropylene fiber diameter, and only forms a thin layer self-assembly on the surface thereof.
The mass fraction of oxygen in the polypropylene non-woven fabric before modification and the polypropylene non-woven fabric after hydrophilic modification is determined by EDS (electronic data set) spectrum in the area and is respectively marked as w 0 And w 1 The calculation is performed according to the following formula: w= (W) 1 -w 0 )/(M O /M A ) X M, wherein M O Is the relative atomic mass of oxygen, M A The molecular weight of a single chain unit of the hydrophilic polymer is M, the surface density of the polypropylene non-woven fabric is M, and W is the content of the hydrophilic polymer on the polypropylene non-woven fabric in the unit area. As confirmed by EDS spectrum, the content of hydrophilic polymer per unit area in example 1 was 0.31g/m 2 The comparison results of fig. 1 and 2 are combined, and it is further proved that the hydrophilic polymer forms a thin layer self-assembly on the surface of the polypropylene fiber under the condition that the morphology such as the diameter of the polypropylene fiber is not influenced, and the self-assembly film layer is formed.
Fig. 3 is a video recording screenshot of the contact angle test of example 1. As can be seen from fig. 3, at the time of the 0.60s video recording screen shot, the water has been completely spread on the surface of the fiber cloth.
Detailed Description
The present invention is described in detail below with reference to specific embodiments, and it should be noted that the following embodiments are only for further description of the present invention and should not be construed as limiting the scope of the present invention, and some insubstantial modifications and adjustments of the present invention by those skilled in the art from the present disclosure are still within the scope of the present invention.
Experimental data in the examples were measured using the following instrument and assay method:
the water contact angle and the spreading time (spreading time, i.e. the time required for the water contact angle to reach 0 °) obtained in the examples were determined using an easysdrop contact angle tester, germany: cutting a non-woven fabric into a sample with the size of 1cm multiplied by 1cm, flatly attaching the sample to a glass slide, keeping the sample flat in the horizontal direction in the attaching process, placing the glass slide on a sample table of an EASYDROP contact angle measuring instrument for fixing, adjusting the control volume of the instrument to 2 mu L of water drop to the center of the sample, and measuring the included angle from the solid-liquid interface to the vapor-liquid interface at the three-phase interface after 10 seconds, namely the static contact angle (water contact angle for short).
Liquid content of hydrophilic polypropylene nonwoven fabric: taking a dry hydrophilic polypropylene non-woven fabric, and weighing. And then rinsing the sample with deionized water until no foam exists, suspending the sample and the sample under the condition of 25 ℃ and humidity of 30%, weighing again after no water drops fall down in 1 minute continuously, and dividing the difference between the two times of weighing by the mass after drying to obtain the liquid content of the sample, wherein the liquid content is expressed as times.
Mass content of hydrophilic polymer in the polypropylene nonwoven fabric obtained in the examples: weighing unmodified polypropylene non-woven fabric with mass m 1 The polypropylene nonwoven fabric obtained by the treatment and drying in the manner shown in the examples was weighed to give a mass m 2 ，(m 2 -m 1 )/m 2 The x 100% is the mass content of the hydrophilic polymer.
Content of hydrophilic polymer in unit surface area of the polypropylene nonwoven fabric: firstly, coating a sample to be tested on the surface by using gold, then placing the coated sample on an SEM detection table, scanning a region of 5 mu m multiplied by 5 mu m on the sample by using SEM, and then measuring the mass fraction of oxygen of the polypropylene non-woven fabric before modification and the polypropylene non-woven fabric after hydrophilic modification in the region by using EDS (electronic data storage) energy spectrumLet alone as w 0 And w 1 The calculation is performed according to the following formula: w= (W) 1 -w 0 )/(M O /M A ) X M, wherein M O Is the relative atomic mass of oxygen, M A The molecular weight of a single chain unit of the hydrophilic polymer is M, the surface density of the polypropylene non-woven fabric is M, and W is the content of the hydrophilic polymer on the polypropylene non-woven fabric in the unit area.
The materials used in the present invention are commercially available except for the maleic anhydride copolymer.
In the following examples, polyvinyl alcohol, PVA-1799, having a degree of polymerization of 1700 and an alcoholysis degree of 99, was purchased from Allatin; the polypropylene melt-blown nonwoven fabrics (matrix) used in examples and comparative examples were derived from the chinese petrochemical petrifaction, the areal density was 25g/m, unless otherwise specified 2 The diameter of the fiber is 0.5-8 microns.
Example 1
The polypropylene melt-blown nonwoven was immersed in a 25℃aqueous solution of 0.3wt% polyvinyl alcohol (from Alatine, PVA-1799, glass transition temperature 72 ℃) and sonicated at a frequency of 50kHz for 30 minutes under a 250W ultrasonic probe. The treated polypropylene was melt-blown into a 0.5wt% glutaraldehyde crosslinking solution (pH 6) and crosslinked in an oven at 60℃for 1h. The polypropylene melt-blown after the crosslinking was placed in a 100W ultrasonic water bath and washed three times at a frequency of 50kHz for 20 minutes each, followed by drying (1 h at 60 ℃).
The obtained polypropylene nonwoven fabric was subjected to water contact angle, mass content of hydrophilic polymer, fiber diameter of polypropylene nonwoven fabric and content of hydrophilic polymer in unit area, and specific test data are shown in table 1.
Example 2
The procedure was the same as in example 1, except that the PVA aqueous solution concentration was changed to 1% by weight, and the specific test data are shown in Table 1.
Example 3
The procedure of example 1 was repeated except that the ultrasonic treatment time in immersing the aqueous polyvinyl alcohol solution was changed to 50 minutes, and the specific test data are shown in Table 1.
Example 4
The procedure was the same as in example 1, except that no crosslinking and the cleaning step performed after crosslinking were performed, and the test data were as shown in Table 1.
Comparative example 1
The polypropylene melt-blown nonwoven fabric was immersed in deionized water at 25℃and sonicated at a frequency of 50kHz for 30 minutes under a 250W ultrasonic probe. The treated polypropylene was melt-blown in a 0.5wt% glutaraldehyde crosslinking solution (pH 6) and treated in an oven at 60℃for 1h. The treated polypropylene melt-blown was placed in a 100W ultrasonic water bath and washed three times at a frequency of 50kHz for 20 minutes each, followed by drying (1 h at 60 ℃).
The obtained polypropylene nonwoven fabric was subjected to water contact angle, mass content of hydrophilic polymer, fiber diameter before and after treatment, and content of hydrophilic polymer in unit area, and specific test data are shown in table 1.
Comparative example 2
The polypropylene melt-blown nonwoven was immersed in a 25℃aqueous solution of 0.1wt% polyvinyl alcohol (from Alatine, PVA-1799) and sonicated at a frequency of 50kHz for 30 minutes under a 250W ultrasonic probe. The treated polypropylene was melt-blown into a 0.5wt% glutaraldehyde crosslinking solution (pH 6) and crosslinked in an oven at 80℃for 1h. The polypropylene melt-blown after the crosslinking was placed in a 100W ultrasonic water bath and washed three times at a frequency of 50kHz for 20 minutes each, followed by drying (1 h at 85 ℃). The PVA-1799 has a glass transition temperature of 72 ℃.
The obtained polypropylene nonwoven fabric was subjected to water contact angle, mass content of hydrophilic polymer, fiber diameter before and after treatment, and content of hydrophilic polymer in unit area, and specific test data are shown in table 1.
Comparative example 3
A polypropylene nonwoven fabric was produced in the same manner as in example 1, except that a polypropylene spunbonded nonwoven fabric (model yc188, shandong's Classification New Material Co., ltd., having an areal density of 80g/m was used 2 ) Replacement polypropylene melt-blown nonwoven (Chinese petrochemical Yanshan petrochemical product, surface density 25 g/m) 2 ) The remaining conditions were unchanged and specific test data are shown in table 1.
Example 5
A polypropylene nonwoven fabric was produced in the same manner as in example 4, except that the polyvinyl alcohol solution was replaced with an aqueous solution of sodium maleate-isobutylene alternating copolymer of equal mass concentration. The specific test data are shown in Table 1.
The preparation method of the sodium maleate-isobutene alternating copolymer comprises the following steps: 10g of maleic anhydride-isobutylene alternating copolymer (colali ISOBAM, molecular weight 30 ten thousand) was taken, placed in a 500ml beaker, 100ml deionized water was added, then 1.5g naoh was added, and stirred with 75 ℃ water bath for 30 minutes, after complete dissolution, then placed in a forced air oven for drying, to obtain sodium maleate alternating copolymer. The glass transition temperature was 167℃as measured by DSC.
Example 6
The external force is applied by rolling method, the upper and lower rollers are cylinders with diameter of 8cm, and length is 20cm (the outer layer is soft rubber layer). The rotating speed of the roller is 30r/min, the rotating speeds of the upper roller and the lower roller are the same, the pressure between the rollers is 100kpa, the rollers are positioned below the liquid level of the PVA solution, and the non-woven fabric is subjected to two-time rolling treatment. The other conditions were the same as in example 1, and specific test data are shown in Table 1.
Example 7
A250W ultrasonic probe was added to the aqueous solution in example 6 and ultrasonic was applied at a frequency of 50kHz, and the nonwoven fabric was subjected to roll-treatment once in the sonicated aqueous solution, and the other conditions were the same as in example 6, and specific test data are shown in Table 1.
Comparative example 4
PVA 1750 (available from Shandong Jia Yi chemical technology Co., ltd.) was used to prepare a concentrated aqueous solution at 90℃with deionized water at a concentration of 0.8wt%. 500ml of PVA solution was weighed and mixed with 600ml of a crosslinking solution to obtain a mixed solution, the crosslinking solution contained 45ml of glutaraldehyde aqueous solution (50% by weight) and also contained acetic acid aqueous solution (10% by volume), methanol aqueous solution (10% by volume) and sulfuric acid aqueous solution (10% by volume), and the volume ratio of the three was 3:2:1. melt-blown nonwoven fabric of polypropylene (Chinese petrochemical Yanshan petrochemical product with surface density of 25 g/m) 2 ) Placed in the mixed solution and vibrated at 150rpm for 60 minutes at 50 c in a vibration incubator, followed by 1 hour in deionized water to remove residual crosslinker and PVA, and finally dried in a 50 c oven for one hour. Specific test results are shown in Table 1.
Example 8
The PVA aqueous solution concentration was changed to 0.1wt%, the crosslinking agent was changed to boric acid, the crosslinking agent concentration was 0.5wt%, the crosslinking time was 90 minutes, and the rest of the operations were the same as in example 1, and the specific test data are shown in Table 1.
Example 9
The hydrophilic aqueous solution concentration was changed to 4.5wt%, the ultrasonic treatment process was changed to ultrasonic treatment at a frequency of 40kHz for 20 minutes, and the rest of the operations were the same as in example 6, and specific test data are shown in table 1.
Example 10
Taking polypropylene melt-blown non-woven fabric (Chinese petrochemical Yanshan petrochemical product with the surface density of 25 g/m) 2 ) The mixture was spread on a Buchner funnel, and 50ml of a 0.5wt% PVA (PVA-1799 from Allatin) solution was added to the Buchner funnel, followed by vacuum filtration at a vacuum of 10Pa. And stopping suction filtration when 10ml of PVA solution remains in the Buchner funnel, immersing the treated polypropylene non-woven fabric in 0.3wt% of acid glutaraldehyde solution (pH of 6), crosslinking for 120 minutes in a 70 ℃ oven, cleaning for 1 time in a 100W ultrasonic water bath kettle at a frequency of 50kHz after crosslinking, 10 minutes each time, and finally drying for 1 hour in a 60 ℃ blast oven. The specific test data are shown in Table 1.
Example 11
The roll-in is positioned above the liquid level, the non-woven fabric is immersed in the aqueous solution for 20 seconds in advance, part of the solution remains on the surface of the fabric, and then the roll-in treatment is carried out. The remaining conditions were the same as in example 6, and specific test data are shown in Table 1.
The treated surface has super-spreadability in the vicinity of the solution, no part of the solution is hydrophilic, the super-spreadability of the product is unevenly distributed, and the data of the parameters in the super-spreadable range are shown in Table 1. In the prior art, after multiple tests, if more solution can be kept on the surface after impregnation, the effect of impregnation can be obtained after external force, but the uniformity is affected.
Comparative example 5
Taking polypropylene melt-blown non-woven fabric (Chinese petrochemical Yanshan petrochemical, surface density 25 g/m) 2 (ii) soaking in 5wt% polyvinyl alcohol(from Alatine, PVA-1799) in aqueous solution, sonicated at a frequency of 50kHz for 20 minutes under a 250W ultrasound probe. The treated polypropylene was melt-blown into a 0.5wt% glutaraldehyde crosslinking solution (pH 6) and crosslinked in an oven at 60℃for 1h. The polypropylene melt-blown after the crosslinking was placed in a 100W ultrasonic water bath and washed three times at a frequency of 50kHz for 20 minutes each, followed by drying (1 h at 60 ℃).
TABLE 1
/>
As can be seen from Table 1, the static contact angles of the polypropylene fiber cloth and water in the invention can reach 0 ℃, the polypropylene fiber cloth has good hydrophilic performance, the water spreading time is less than 1s, and the polypropylene fiber cloth has water super-spreading performance; the static contact angle of the polypropylene fiber cloth obtained by the conventional preparation method can not reach 0 degree, and the polypropylene fiber cloth can not be spread by water, so that obvious technical effects are achieved, and remarkable progress is achieved. Moreover, the method for preparing the polypropylene fiber cloth does not need any pretreatment such as grafting modification and the like on the polypropylene fiber cloth, and the super-spreading polypropylene fiber cloth can be obtained by directly contacting the polypropylene fiber cloth with hydrophilic polymer and by means of external force.
It should be noted that the above-described embodiments are only for explaining the present invention and do not constitute any limitation of the present invention. The invention has been described with reference to exemplary embodiments, but it is understood that the words which have been used are words of description and illustration, rather than words of limitation. Modifications may be made to the invention as defined in the appended claims, and the invention may be modified without departing from the scope and spirit of the invention. Although the invention is described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, as the invention extends to all other means and applications which perform the same function.
All publications, patent applications, patents, and other references mentioned in this specification are incorporated herein by reference in their entirety. Unless defined otherwise, all technical and scientific terms used herein have the meaning commonly understood by one of ordinary skill in the art. In case of conflict, the present specification, definitions, will control.
When the specification derives materials, substances, methods, steps, devices, or elements and the like in the word "known to those skilled in the art", "prior art", or the like, such derived objects encompass those conventionally used in the art at the time of the application, but also include those which are not currently commonly used but which would become known in the art to be suitable for similar purposes.
The endpoints of the ranges and any values disclosed in this application are not limited to the precise range or value, and the range or value should be understood to include values approaching the range or value. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein. In the following, the individual technical solutions can in principle be combined with one another to give new technical solutions, which should also be regarded as specifically disclosed herein.
In the context of this specification, any matters or matters not mentioned are directly applicable to those known in the art without modification except as explicitly stated.
Moreover, any embodiment described herein can be freely combined with one or more other embodiments described herein, and the technical solutions or ideas thus formed are all deemed to be part of the original disclosure or original description of the present invention, and should not be deemed to be a new matter which has not been disclosed or contemplated herein, unless such combination is clearly unreasonable by those skilled in the art.
Claims (11)
1. The super-spreading polypropylene fiber cloth comprises a polypropylene fiber cloth substrate and a hydrophilic polymer, wherein the mass of the super-spreading polypropylene fiber cloth is 100%, and the content of the polypropylene fiber cloth substrate in the super-spreading polypropylene fiber cloth is 93% -99.99%; the content of the hydrophilic polymer is 0.01% -7%; the static contact angle of the polypropylene fiber cloth with water can reach 0 degree in no more than 1 second.
2. The super-spreading polypropylene fiber cloth according to claim 1, wherein:
the static contact angle between the super-spreading polypropylene fiber cloth and water can reach 0 degree in 0.005-1 second; and/or the number of the groups of groups,
the mass of the super-spreading fiber cloth is 100 percent, and the content of the polypropylene fiber cloth matrix in the super-spreading polypropylene fiber cloth is 95 to 99.95 percent; the content of the hydrophilic polymer is 0.05% -5%.
3. The super-spreading polypropylene fiber cloth according to claim 1, wherein:
the fiber diameter in the super-spreading polypropylene fiber cloth is below 20 microns, preferably below 10 microns, more preferably 0.1-10 microns; and/or the number of the groups of groups,
the hydrophilic polymer is selected from water-soluble polymers, preferably the hydrophilic polymer contains polar segments and nonpolar segments, more preferably at least one of the following polymers and/or a crosslinked polymer formed by at least one of the following polymers and a crosslinking agent: at least one of polyvinyl alcohol, polyacrylamide, polyethyleneimine, sodium polyacrylate, polyacrylic acid, maleic anhydride copolymer and derivatives thereof, polyethylene glycol, more preferably at least one of sodium polyacrylate, polyvinyl alcohol, maleic anhydride copolymer and derivatives thereof, and polyethylene glycol; the cross-linking agent is preferably at least one selected from polyacids and polyaldehydes, more preferably glutaraldehyde and/or boric acid.
4. The super-spreading polypropylene fiber cloth according to any one of claims 1 to 3, wherein:
the super-spreading polypropylene fiber cloth contains polypropylene fibers coated by hydrophilic polymers; preferably, the method comprises the steps of,
the super-spreading polypropylene fiber cloth is prepared by contacting a polypropylene fiber cloth substrate with a solution containing hydrophilic polymer under the action of external force, wherein the content of the hydrophilic polymer in the solution containing the hydrophilic polymer is not higher than 5wt%.
5. A preparation method of super-spreading polypropylene fiber cloth comprises the steps of contacting a polypropylene fiber cloth substrate with a solution containing hydrophilic polymer under the action of external force, wherein the content of the hydrophilic polymer in the solution containing the hydrophilic polymer is not higher than 5wt%, and obtaining the super-spreading polypropylene fiber cloth.
6. The method of manufacturing according to claim 5, wherein:
the contacting is performed in a solution containing a hydrophilic polymer; and/or the number of the groups of groups,
the contact utilizes intermolecular force to self-assemble hydrophilic polymer on the fiber surface of the polypropylene fiber cloth to obtain super-spreading polypropylene fiber cloth with polypropylene fibers coated by the hydrophilic polymer; and/or the number of the groups of groups,
The content of the hydrophilic polymer in the hydrophilic polymer-containing solution is 0.05 to 4.5wt%, preferably 0.1 to 4.5wt%; and/or the number of the groups of groups,
the preparation method further comprises the step of drying after the polypropylene fiber cloth substrate is contacted with the hydrophilic polymer; preferably, the method comprises the steps of,
both the temperature of said contacting and the temperature of said drying do not exceed the melting temperature of the fibrous web substrate and the hydrophilic polymer, more preferably do not exceed the glass transition temperature of the hydrophilic polymer.
7. The method of manufacturing according to claim 5, wherein:
the contact is performed under the action of external force; preferably, the method comprises the steps of,
the external force action mode comprises one or a combination of a plurality of modes of ultrasonic, rolling, suction filtration, lamination and mould pressing;
more preferably, the conditions of the ultrasound include: the frequency of the ultrasound is not lower than 5kHz, preferably not lower than 10kHz, and/or the ultrasound time is not lower than 1 minute, preferably not lower than 5 minutes, more preferably 10 to 120 minutes; and/or the number of the groups of groups,
the conditions of suction filtration include:
the vacuum degree is not lower than 5Pa, preferably not lower than 10Pa, and/or the suction filtration time is not shorter than 1 second, preferably not lower than 5 seconds, and/or,
the conditions for rolling included:
The pressure is not lower than 5Pa, preferably not lower than 10Pa; the number of rolling is not less than 1.
8. The method of manufacturing according to claim 5, wherein:
the hydrophilic polymer is selected from water-soluble polymers, preferably: at least one of polyvinyl alcohol, polyacrylamide, polyethyleneimine, sodium polyacrylate, polyacrylic acid, maleic anhydride copolymer and derivatives thereof, polyethylene glycol, more preferably at least one of sodium polyacrylate, maleic anhydride copolymer and derivatives thereof, polyvinyl alcohol, and polyethylene glycol; and/or the number of the groups of groups,
the surface density of the polypropylene non-woven fabric matrix is 10-60g/m 2 Preferably 20-50g/m 2 And/or the fiber diameter is not greater than 20 microns, preferably 10 microns or less, more preferably 0.1-10 microns.
9. The preparation method according to one of claims 5 to 8, characterized in that:
the preparation method further comprises the optional step of crosslinking:
when the step of crosslinking is included, the polypropylene fiber cloth substrate is contacted with the hydrophilic polymer, and the obtained polypropylene fiber cloth is subjected to crosslinking reaction in a solution containing a crosslinking agent; preferably, the method comprises the steps of,
the cross-linking agent is at least one of polybasic acid and polybasic aldehyde, preferably at least one of glutaraldehyde and boric acid, more preferably glutaraldehyde; and/or the number of the groups of groups,
The content of the crosslinking agent in the solution containing the crosslinking agent is 0.005 to 0.8wt%, preferably 0.01 to 0.5wt%; and/or, the temperature conditions of crosslinking include:
the temperature of the crosslinking does not exceed the glass transition temperature of the hydrophilic polymer, preferably 30-70 ℃; and/or the pH of the solution containing the cross-linking agent is 4-7; the crosslinking reaction time is 1min to 120min, preferably 1min to 90min.
10. A super-spread polypropylene fiber cloth produced by the production method according to any one of claims 5 to 9.
11. Use of the super-spread polypropylene fiber cloth according to one of claims 1 to 4 or the super-spread polypropylene fiber cloth according to claim 10 in the following fields:
oil-water separation, brine desalination, wastewater treatment, ion concentration or extraction, suspended matter filtration, oil-containing rainwater separation and medical and sanitary articles;
preferably, the medical and health product application field comprises: at least one of diaper, urine isolation pad, sanitary towel, medical and sanitary auxiliary materials, and protein separation/filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211205620.XA CN117845618A (en) | 2022-09-30 | 2022-09-30 | Polypropylene fiber cloth with water super-spreading function and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211205620.XA CN117845618A (en) | 2022-09-30 | 2022-09-30 | Polypropylene fiber cloth with water super-spreading function and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117845618A true CN117845618A (en) | 2024-04-09 |
Family
ID=90531655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211205620.XA Pending CN117845618A (en) | 2022-09-30 | 2022-09-30 | Polypropylene fiber cloth with water super-spreading function and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117845618A (en) |
-
2022
- 2022-09-30 CN CN202211205620.XA patent/CN117845618A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1065294A (en) | Absorbent articles and methods for their preparation | |
| KR100372382B1 (en) | Highly absorbent composite compositions, absorbent sheets provided with the compositions, and process for producing the same | |
| CN102002852B (en) | Hydrophilic modification method of fabrics or nonwoven fabrics and obtained products | |
| JP4489803B2 (en) | Low retention hydrophilic hydrophilic nonwoven containing cross-linked hydrophilic polymer | |
| JP4913984B2 (en) | Hydrophilic, open-cell foam based on melamine / formaldehyde resin, its manufacture and its use in hygiene products | |
| JPS60224875A (en) | Method for producing absorbent fibrous feather, produced fibrous feather and absorbing substance containing said feather | |
| WO2007023455A2 (en) | Hydroxyl polymer fiber fibrous structures and processes for making same | |
| JPS58163438A (en) | Absorbing sheet product | |
| US5409765A (en) | Nonwoven webs made from ionomers | |
| EP0351318A2 (en) | Meltblown polymeric dispersions | |
| CN111235881A (en) | Hydrophilic finishing method for ES fiber non-woven fabric of sanitary towel surface coating | |
| GB2065187A (en) | Process for preparing water sorptive products | |
| CN117845618A (en) | Polypropylene fiber cloth with water super-spreading function and preparation method and application thereof | |
| JP5179044B2 (en) | Thin superabsorbent composite with excellent dry feeling and production method thereof | |
| JP4351176B2 (en) | Ion exchange material and ion exchange filter using the same | |
| EP2793789A1 (en) | A double- or multiply fibrous sheet material containing superabsorbent material and a method for producing it | |
| CN117845617A (en) | Polypropylene fiber cloth with hydrophilic and water-retaining functions and preparation method and application thereof | |
| CN103585893B (en) | A kind of manufacture method of alkaline-resisting liquid filtering film support | |
| JP2019506546A (en) | Superabsorbent material SAT (Superabsorbent thin paper) | |
| KR101989843B1 (en) | fibrous structure made of porous fibers for manufacturing method | |
| CN111411545A (en) | Modifier for thermal bonding method expanded paper and preparation method and application thereof | |
| JPH0351310A (en) | Melt-blown polymer dispersion | |
| JP2007275331A (en) | Absorbent complex and its manufacturing method | |
| JPS5831149A (en) | Water absorbable acrylonitrile fiber molded article | |
| JPS63211369A (en) | Surface layer material of water absorbable article having permanent hydrophilicity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |