CN111607902A - Hydrophobic melt-blown fabric with rough surface and preparation method thereof - Google Patents

Hydrophobic melt-blown fabric with rough surface and preparation method thereof Download PDF

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Publication number
CN111607902A
CN111607902A CN202010363518.7A CN202010363518A CN111607902A CN 111607902 A CN111607902 A CN 111607902A CN 202010363518 A CN202010363518 A CN 202010363518A CN 111607902 A CN111607902 A CN 111607902A
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China
Prior art keywords
parts
melt
slices
hydrophobic
blown
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Inventor
戚志
黎善雄
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Guangdong Succeed Intelligent Technology Co ltd
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Guangdong Succeed Intelligent Technology Co ltd
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Priority to CN202010363518.7A priority Critical patent/CN111607902A/en
Publication of CN111607902A publication Critical patent/CN111607902A/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • 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
    • D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
    • 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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • 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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C23/00—Making patterns or designs on fabrics
    • D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
    • 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
    • D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
    • 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
    • D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
    • 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
    • D06M11/77—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 silicon or compounds thereof
    • D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • 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
    • 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
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/12—Hydrophobic properties

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Multicomponent Fibers (AREA)
  • Artificial Filaments (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The embodiment of the invention relates to the technical field of melt-blown fabric, and particularly discloses hydrophobic melt-blown fabric with a rough surface, which comprises the following raw materials in parts by weight: 40-60 parts of polypropylene slices, 15-20 parts of polybutylene terephthalate slices, 3-5 parts of chlorinated biphenyl, 3-5 parts of molybdenum disulfide, 1-5 parts of inorganic flame retardant and 20-25 parts of nano-fiber material. The embodiment of the invention also discloses a preparation method of the hydrophobic melt-blown fabric with the rough surface. According to the invention, polypropylene slices and polybutylene terephthalate slices are taken as substrates, and are modified by adding chlorinated biphenyl, an inorganic flame retardant and molybdenum disulfide, so that the melt fluidity in melt-blown processing can be greatly improved, a layer of nanofiber material is coated on melt-blown cloth obtained by melt-blowing, the parameters of hydrophobic treatment are adjusted, the wettability of the surface of the melt-blown cloth is effectively changed, the surface tension of water is improved, and the hydrophobicity of the melt-blown cloth is improved.

Description

Hydrophobic melt-blown fabric with rough surface and preparation method thereof
Technical Field
The embodiment of the invention relates to the technical field of melt-blown fabric, in particular to hydrophobic melt-blown fabric with a rough surface and a preparation method thereof.
Background
The search and development of novel materials with super-hydrophobic properties are always the subject of attention and one of the hot spots of research in the field of bionics for many years. The super-hydrophobic fabric is popular with people due to excellent special performances such as adhesion resistance, stain resistance and self-cleaning, and can be widely applied to rain-proof/stain-proof outdoor clothing, diving suit, interior decoration fabric, camping tent, military combat uniform, industrial waterproof cloth, medical and sanitary textiles and the like.
Polypropylene itself is a non-toxic, odorless, tasteless, milky-white, highly crystalline polymer that is particularly stable to water and absorbs little water.
The diameter of the melt-blown fabric taking polypropylene as a main raw material can reach 1-5 microns, and the number and the surface area of fibers in unit area can be increased by the superfine fibers with unique capillary structures, so that the melt-blown fabric has good air permeability and good water repellency. In recent years, water-repellent breathable fabrics are increasingly demanded in industry and life, and researchers adopt various methods to treat the surfaces of the fabrics so as to achieve ideal water-repellent breathable effects. The existing super-hydrophobic treatment for melt-blown cloth can not achieve better hydrophobic effect.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a hydrophobic meltblown having a rough surface and a method for preparing the same, which solve the problems of the background art described above. In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the hydrophobic meltblown with the rough surface comprises the following raw materials in parts by weight: 40-60 parts of polypropylene slices, 15-20 parts of polybutylene terephthalate slices, 3-5 parts of chlorinated biphenyl, 3-5 parts of molybdenum disulfide, 1-5 parts of inorganic flame retardant and 20-25 parts of nano-fiber material.
As a further limitation of the technical scheme of the embodiment of the invention, the hydrophobic melt-blown fabric comprises the following raw materials in parts by weight: 45-55 parts of polypropylene slices, 17-19 parts of polybutylene terephthalate slices, 3.5-4.5 parts of chlorinated biphenyl, 3.5-4.5 parts of molybdenum disulfide, 2-4 parts of inorganic flame retardant and 22-24 parts of nano-fiber material.
As a further limitation of the technical scheme of the embodiment of the invention, the hydrophobic melt-blown fabric comprises the following raw materials in parts by weight: 50 parts of polypropylene slices, 18 parts of polybutylene terephthalate slices, 4 parts of chlorinated biphenyl, 4 parts of molybdenum disulfide, 3 parts of inorganic flame retardant and 23 parts of nanofiber material.
As a further limitation of the technical solution of the embodiment of the present invention, the surface of the hydrophobic meltblown fabric has a rough structure.
As a further limitation of the technical scheme of the embodiment of the invention, the diameter of the fiber of the melt-blown cloth is 2.5-4um, and the surface roughness parameter Ra is 0.1-0.3 um.
As a further limitation of the technical solution of the embodiment of the present invention, the inorganic flame retardant includes any one of aluminum hydroxide and magnesium hydroxide.
The preparation method of the hydrophobic melt-blown fabric with the rough surface comprises the following specific steps:
s10, feeding the dried modified resin slices into a screw extruder, melting the resin slices by a heating pipe, reaching a spinneret orifice at the front end of a nozzle through a pipe body distribution pipeline, and spraying the resin slices out of the spinneret orifice; meanwhile, the tube body is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt at two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows, and the superfine fiber is solidified into filaments through heat exchange with surrounding cold air;
s20, depositing the solidified fibers on a receiving device under the action of air flow, and forming melt-blown cloth through the self-bonding action;
s30, coating a layer of nanofiber material on the melt-blown coating; the silicon dioxide particles, the titanium dioxide particles and the zinc dioxide particles are nano-scale particles and have good hydrophobicity, and the effect in the step is to coat the nanofiber material on the textile fibers, so that each textile fiber has certain hydrophobicity;
s40, clamping the melt-blown cloth coated with the nanofiber material in two layers of screens with the mesh number of 300-700 meshes, sending the screens into a hot rolling mill for hot rolling, and taking out the melt-blown cloth after the hot rolling from the two layers of screens to obtain the hydrophobic melt-blown cloth with the concave-convex coarse structure on the surface.
As a further limitation of the technical solution of the embodiment of the present invention, the preparation method of the modified resin slice comprises: and (3) putting the polypropylene slices, the polybutylene terephthalate slices, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide into a vacuum oven for drying.
As a further limitation of the technical solution of the embodiment of the present invention, the preparation method of the modified resin slice further comprises blending the dried polypropylene slice, polybutylene terephthalate slice, chlorinated biphenyl, inorganic flame retardant and molybdenum disulfide in a twin-screw extruder, condensing the melt trickle in a water tank, air-drying by an air dryer, and dicing by a dicing cutter to obtain the modified resin slice.
As a further limitation of the technical solution of the embodiment of the present invention, the nanofiber material is one of silica particles, titanium dioxide particles, and zinc dioxide particles.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
according to the invention, polypropylene slices and polybutylene terephthalate slices are taken as matrixes, and are modified by adding chlorinated biphenyl, an inorganic flame retardant and molybdenum disulfide, so that the melt flowability in melt-blowing processing can be greatly improved, the modified melt-blown fabric with smaller aperture and higher filtering precision is prepared, and the prepared melt-blown fabric has high strength and good elasticity; meanwhile, a layer of nanofiber material is coated on the melt-blown cloth obtained by melt-blowing, the parameters of hydrophobic treatment are adjusted, the wettability of the surface of the melt-blown cloth is effectively changed, the surface tension of water is improved, and the hydrophobicity of the melt-blown cloth is improved.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
In the embodiment provided by the invention, the hydrophobic melt-blown fabric with the rough surface comprises the following raw materials in parts by weight: 40 parts of polypropylene slices, 15 parts of polybutylene terephthalate slices, 3 parts of chlorinated biphenyl, 3 parts of molybdenum disulfide, 1 part of inorganic flame retardant and 20 parts of nanofiber material.
Furthermore, the surface of the hydrophobic melt-blown fabric has a concave-convex rough structure.
Further, the fiber diameter of the meltblown fabric was 2.5um, and the surface roughness parameter Ra was 0.1 um.
Further, the inorganic flame retardant comprises aluminum hydroxide.
The preparation method of the hydrophobic melt-blown fabric with the rough surface is characterized by comprising the following specific steps of: s10, feeding the dried modified resin slices into a screw extruder, melting the resin slices by a heating pipe, reaching a spinneret orifice at the front end of a nozzle through a pipe body distribution pipeline, and spraying the resin slices out of the spinneret orifice; meanwhile, the tube body is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt at two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows, and the superfine fiber is solidified into filaments through heat exchange with surrounding cold air;
s20, depositing the solidified fibers on a receiving device under the action of air flow, and forming melt-blown cloth through the self-bonding action;
s30, coating a layer of nanofiber material on the melt-blown coating; the silicon dioxide particles, the titanium dioxide particles and the zinc dioxide particles are nano-scale particles and have good hydrophobicity, and the effect in the step is to coat the nanofiber material on the textile fibers, so that each textile fiber has certain hydrophobicity;
s40, clamping the meltblown coated with the nanofiber material in two screens with the mesh number of 300, feeding the meltblown coated with the nanofiber material into a hot rolling mill for hot rolling, and taking out the hot-rolled meltblown from the two screens to obtain the hydrophobic meltblown coated with the concave-convex coarse structure on the surface.
Further, the preparation method of the modified resin slice comprises the following steps: and (3) putting the polypropylene slices, the polybutylene terephthalate slices, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide into a vacuum oven for drying.
Further, the preparation method of the modified resin slice comprises the steps of blending the dried polypropylene slice, the polybutylene terephthalate slice, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide in a double-screw extruder, condensing the melt trickle in a water tank, then air-drying the melt trickle by an air dryer, and pelletizing the melt by a pelletizer to obtain the modified resin slice.
Further, the nanofiber material is silica particles.
Example 2
In the embodiment provided by the invention, the hydrophobic melt-blown fabric with the rough surface comprises the following raw materials in parts by weight: 45 parts of polypropylene slices, 17 parts of polybutylene terephthalate slices, 3.5 parts of chlorinated biphenyl, 3.5 parts of molybdenum disulfide, 2 parts of inorganic flame retardant and 22 parts of nano-fiber material.
Furthermore, the surface of the hydrophobic melt-blown fabric has a concave-convex rough structure.
Further, the fiber diameter of the meltblown fabric was 3um, and the surface roughness parameter Ra was 0.2 um.
Further, the inorganic flame retardant comprises aluminum hydroxide.
The preparation method of the hydrophobic melt-blown fabric with the rough surface is characterized by comprising the following specific steps of: s10, feeding the dried modified resin slices into a screw extruder, melting the resin slices by a heating pipe, reaching a spinneret orifice at the front end of a nozzle through a pipe body distribution pipeline, and spraying the resin slices out of the spinneret orifice; meanwhile, the tube body is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt at two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows, and the superfine fiber is solidified into filaments through heat exchange with surrounding cold air;
s20, depositing the solidified fibers on a receiving device under the action of air flow, and forming melt-blown cloth through the self-bonding action;
s30, coating a layer of nanofiber material on the melt-blown coating; the silicon dioxide particles, the titanium dioxide particles and the zinc dioxide particles are nano-scale particles and have good hydrophobicity, and the effect in the step is to coat the nanofiber material on the textile fibers, so that each textile fiber has certain hydrophobicity;
s40, clamping the meltblown coated with the nanofiber material in two screens with the mesh number of 400, feeding the meltblown coated with the nanofiber material into a hot rolling mill for hot rolling, and taking out the hot-rolled meltblown from the two screens to obtain the hydrophobic meltblown coated with the concave-convex coarse structure on the surface.
Further, the preparation method of the modified resin slice comprises the following steps: and (3) putting the polypropylene slices, the polybutylene terephthalate slices, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide into a vacuum oven for drying.
Further, the preparation method of the modified resin slice comprises the steps of blending the dried polypropylene slice, the polybutylene terephthalate slice, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide in a double-screw extruder, condensing the melt trickle in a water tank, then air-drying the melt trickle by an air dryer, and pelletizing the melt by a pelletizer to obtain the modified resin slice.
Further, the nanofiber material is silica particles.
Example 3
In the embodiment provided by the invention, the hydrophobic melt-blown fabric with the rough surface comprises the following raw materials in parts by weight: 50 parts of polypropylene slices, 18 parts of polybutylene terephthalate slices, 4 parts of chlorinated biphenyl, 4 parts of molybdenum disulfide, 3 parts of inorganic flame retardant and 23 parts of nanofiber material.
Furthermore, the surface of the hydrophobic melt-blown fabric has a concave-convex rough structure.
Further, the fiber diameter of the meltblown fabric was 3um, and the surface roughness parameter Ra was 0.2 um.
Further, the inorganic flame retardant comprises magnesium hydroxide.
The preparation method of the hydrophobic melt-blown fabric with the rough surface is characterized by comprising the following specific steps of: s10, feeding the dried modified resin slices into a screw extruder, melting the resin slices by a heating pipe, reaching a spinneret orifice at the front end of a nozzle through a pipe body distribution pipeline, and spraying the resin slices out of the spinneret orifice; meanwhile, the tube body is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt at two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows, and the superfine fiber is solidified into filaments through heat exchange with surrounding cold air;
s20, depositing the solidified fibers on a receiving device under the action of air flow, and forming melt-blown cloth through the self-bonding action;
s30, coating a layer of nanofiber material on the melt-blown coating; the silicon dioxide particles, the titanium dioxide particles and the zinc dioxide particles are nano-scale particles and have good hydrophobicity, and the effect in the step is to coat the nanofiber material on the textile fibers, so that each textile fiber has certain hydrophobicity;
s40, clamping the meltblown coated with the nanofiber material in two screens with 500 meshes, feeding the two screens into a hot rolling mill for hot rolling, and taking out the hot-rolled meltblown from the two screens to obtain the hydrophobic meltblown with the concave-convex rough structure on the surface.
Further, the preparation method of the modified resin slice comprises the following steps: and (3) putting the polypropylene slices, the polybutylene terephthalate slices, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide into a vacuum oven for drying.
Further, the preparation method of the modified resin slice comprises the steps of blending the dried polypropylene slice, the polybutylene terephthalate slice, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide in a double-screw extruder, condensing the melt trickle in a water tank, then air-drying the melt trickle by an air dryer, and pelletizing the melt by a pelletizer to obtain the modified resin slice.
Further, the nanofiber material is titanium dioxide particles.
Example 4
In the embodiment provided by the invention, the hydrophobic melt-blown fabric with the rough surface comprises the following raw materials in parts by weight: 55 parts of polypropylene slices, 19 parts of polybutylene terephthalate slices, 4.5 parts of chlorinated biphenyl, 4.5 parts of molybdenum disulfide, 4 parts of inorganic flame retardant and 24 parts of nano-fiber material.
Furthermore, the surface of the hydrophobic melt-blown fabric has a concave-convex rough structure.
Further, the fiber diameter of the meltblown fabric was 3.5um, and the surface roughness parameter Ra was 0.3 um.
Further, the inorganic flame retardant comprises magnesium hydroxide.
The preparation method of the hydrophobic melt-blown fabric with the rough surface is characterized by comprising the following specific steps of: s10, feeding the dried modified resin slices into a screw extruder, melting the resin slices by a heating pipe, reaching a spinneret orifice at the front end of a nozzle through a pipe body distribution pipeline, and spraying the resin slices out of the spinneret orifice; meanwhile, the tube body is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt at two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows, and the superfine fiber is solidified into filaments through heat exchange with surrounding cold air;
s20, depositing the solidified fibers on a receiving device under the action of air flow, and forming melt-blown cloth through the self-bonding action;
s30, coating a layer of nanofiber material on the melt-blown coating; the silicon dioxide particles, the titanium dioxide particles and the zinc dioxide particles are nano-scale particles and have good hydrophobicity, and the effect in the step is to coat the nanofiber material on the textile fibers, so that each textile fiber has certain hydrophobicity;
s40, clamping the meltblown coated with the nanofiber material in two screens with the mesh number of 600 meshes, feeding the meltblown coated with the nanofiber material into a hot rolling mill for hot rolling, and taking the hot-rolled meltblown coated with the nanofiber material out of the two screens to obtain the hydrophobic meltblown coated with the concave-convex coarse structure on the surface.
Further, the preparation method of the modified resin slice comprises the following steps: and (3) putting the polypropylene slices, the polybutylene terephthalate slices, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide into a vacuum oven for drying.
Further, the preparation method of the modified resin slice comprises the steps of blending the dried polypropylene slice, the polybutylene terephthalate slice, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide in a double-screw extruder, condensing the melt trickle in a water tank, then air-drying the melt trickle by an air dryer, and pelletizing the melt by a pelletizer to obtain the modified resin slice.
Furthermore, the nanofiber material is zinc dioxide particles.
Example 5
In the embodiment provided by the invention, the hydrophobic melt-blown fabric with the rough surface comprises the following raw materials in parts by weight: 60 parts of polypropylene slices, 20 parts of polybutylene terephthalate slices, 5 parts of chlorinated biphenyl, 5 parts of molybdenum disulfide, 5 parts of an inorganic flame retardant and 25 parts of a nanofiber material.
Furthermore, the surface of the hydrophobic melt-blown fabric has a concave-convex rough structure.
Further, the fiber diameter of the meltblown fabric was 4um, and the surface roughness parameter Ra was 0.3 um.
Further, the inorganic flame retardant comprises aluminum hydroxide.
The preparation method of the hydrophobic melt-blown fabric with the rough surface is characterized by comprising the following specific steps of: s10, feeding the dried modified resin slices into a screw extruder, melting the resin slices by a heating pipe, reaching a spinneret orifice at the front end of a nozzle through a pipe body distribution pipeline, and spraying the resin slices out of the spinneret orifice; meanwhile, the tube body is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt at two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows, and the superfine fiber is solidified into filaments through heat exchange with surrounding cold air;
s20, depositing the solidified fibers on a receiving device under the action of air flow, and forming melt-blown cloth through the self-bonding action;
s30, coating a layer of nanofiber material on the melt-blown coating; the silicon dioxide particles, the titanium dioxide particles and the zinc dioxide particles are nano-scale particles and have good hydrophobicity, and the effect in the step is to coat the nanofiber material on the textile fibers, so that each textile fiber has certain hydrophobicity;
s40, clamping the meltblown coated with the nanofiber material in two screens with the mesh number of 700, feeding the meltblown coated with the nanofiber material into a hot rolling mill for hot rolling, and taking out the hot-rolled meltblown from the two screens to obtain the hydrophobic meltblown coated with the concave-convex coarse structure on the surface.
Further, the preparation method of the modified resin slice comprises the following steps: and (3) putting the polypropylene slices, the polybutylene terephthalate slices, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide into a vacuum oven for drying.
Further, the preparation method of the modified resin slice comprises the steps of blending the dried polypropylene slice, the polybutylene terephthalate slice, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide in a double-screw extruder, condensing the melt trickle in a water tank, then air-drying the melt trickle by an air dryer, and pelletizing the melt by a pelletizer to obtain the modified resin slice.
Further, the nanofiber material is titanium dioxide particles.
In conclusion, in the embodiment of the invention, the polypropylene slices and the polybutylene terephthalate slices are used as the matrix, and the modified melt-blown fabric is modified by adding the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide, so that the melt flowability in melt-blown processing can be greatly improved, the modified melt-blown fabric with smaller aperture and higher filtering precision is prepared, and the prepared melt-blown fabric has high strength and good elasticity; meanwhile, a layer of nanofiber material is coated on the melt-blown cloth obtained by melt-blowing, the parameters of hydrophobic treatment are adjusted, the wettability of the surface of the melt-blown cloth is effectively changed, the surface tension of water is improved, and the hydrophobicity of the melt-blown cloth is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The hydrophobic melt-blown fabric with the rough surface is characterized by comprising the following raw materials in parts by weight: 40-60 parts of polypropylene slices, 15-20 parts of polybutylene terephthalate slices, 3-5 parts of chlorinated biphenyl, 3-5 parts of molybdenum disulfide, 1-5 parts of inorganic flame retardant and 20-25 parts of nano-fiber material.
2. The hydrophobic meltblown having a rough surface according to claim 1 wherein the hydrophobic meltblown comprises the following raw materials in parts by weight: 45-55 parts of polypropylene slices, 17-19 parts of polybutylene terephthalate slices, 3.5-4.5 parts of chlorinated biphenyl, 3.5-4.5 parts of molybdenum disulfide, 2-4 parts of inorganic flame retardant and 22-24 parts of nano-fiber material.
3. The hydrophobic meltblown having a rough surface according to claim 2 wherein the hydrophobic meltblown comprises the following raw materials in parts by weight: 50 parts of polypropylene slices, 18 parts of polybutylene terephthalate slices, 4 parts of chlorinated biphenyl, 4 parts of molybdenum disulfide, 3 parts of inorganic flame retardant and 23 parts of nanofiber material.
4. The hydrophobic meltblown having a roughened surface according to any of claims 1-3 wherein the hydrophobic meltblown surface has a textured structure.
5. The hydrophobic meltblown having a rough surface according to claim 4 wherein the meltblown has a fiber diameter of 2.5-4um and a surface roughness parameter Ra of 0.1-0.3 um.
6. The hydrophobic meltblown having a rough surface according to claim 5 wherein the inorganic flame retardant comprises any of aluminum hydroxide and magnesium hydroxide.
7. A method for preparing the hydrophobic meltblown having a roughened surface according to any of claims 1-6, comprising the steps of:
s10, feeding the dried modified resin slices into a screw extruder, melting the resin slices by a heating pipe, reaching a spinneret orifice at the front end of a nozzle through a pipe body distribution pipeline, and spraying the resin slices out of the spinneret orifice; meanwhile, the tube body is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt at two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows, and the superfine fiber is solidified into filaments through heat exchange with surrounding cold air;
s20, depositing the solidified fibers on a receiving device under the action of air flow, and forming melt-blown cloth through the self-bonding action;
s30, coating a layer of nanofiber material on the melt-blown coating;
s40, clamping the melt-blown cloth coated with the nanofiber material in two layers of screens with the mesh number of 300-700 meshes, sending the screens into a hot rolling mill for hot rolling, and taking out the melt-blown cloth after the hot rolling from the two layers of screens to obtain the hydrophobic melt-blown cloth with the concave-convex coarse structure on the surface.
8. The method of preparing the hydrophobic meltblown having a rough surface according to claim 7, wherein the modified resin chip is prepared by: and (3) putting the polypropylene slices, the polybutylene terephthalate slices, the chlorinated biphenyl, the inorganic flame retardant and the molybdenum disulfide into a vacuum oven for drying.
9. The method of claim 8, wherein the modified resin chip is prepared by blending dried polypropylene chips, polybutylene terephthalate chips, chlorinated biphenyls, inorganic flame retardants, and molybdenum disulfide in a twin-screw extruder, condensing the melt stream in a water tank, air-drying the melt stream in an air dryer, and dicing the melt stream in a dicing cutter.
10. The method of claim 9, wherein the nanofiber material is one of silica particles, titanium dioxide particles, and zinc dioxide particles.
CN202010363518.7A 2020-04-30 2020-04-30 Hydrophobic melt-blown fabric with rough surface and preparation method thereof Pending CN111607902A (en)

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