WO2020006840A1 - 一种熔喷型非织造过滤材料 - Google Patents

一种熔喷型非织造过滤材料 Download PDF

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Publication number
WO2020006840A1
WO2020006840A1 PCT/CN2018/102141 CN2018102141W WO2020006840A1 WO 2020006840 A1 WO2020006840 A1 WO 2020006840A1 CN 2018102141 W CN2018102141 W CN 2018102141W WO 2020006840 A1 WO2020006840 A1 WO 2020006840A1
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WO
WIPO (PCT)
Prior art keywords
polylactic acid
raw material
temperature
zone
meltblown
Prior art date
Application number
PCT/CN2018/102141
Other languages
English (en)
French (fr)
Inventor
黄倩
Original Assignee
黄倩
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 黄倩 filed Critical 黄倩
Priority to US16/765,182 priority Critical patent/US20200347532A1/en
Priority to US16/560,972 priority patent/US20190388816A1/en
Publication of WO2020006840A1 publication Critical patent/WO2020006840A1/zh
Priority to ZA2020/03756A priority patent/ZA202003756B/en

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0015—Electro-spinning characterised by the initial state of the material
    • D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/02—Preparation of spinning solutions
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/09—Control of pressure, temperature or feeding rate
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0015—Electro-spinning characterised by the initial state of the material
    • D01D5/0023—Electro-spinning characterised by the initial state of the material the material being a polymer melt
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D01F6/625—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters derived from hydroxy-carboxylic acids, e.g. lactones
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0618—Non-woven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0622—Melt-blown
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0631—Electro-spun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D10B2331/041—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET] derived from hydroxy-carboxylic acids, e.g. lactones
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/30—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14
    • D10B2331/301—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14 polyarylene sulfides, e.g. polyphenylenesulfide
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    • D10B2505/00—Industrial
    • D10B2505/04—Filters

Definitions

  • the electrostatic spinning method is used to prepare a polylactic acid electrostatic spinning layer using a polylactic acid spinning solution as a raw material.
  • the spinning voltage is 26-30 kV
  • the spinning solution extrusion speed is 1-2 mL. / h
  • the receiving distance is 10-20cm.
  • the formation of a modified polylactic acid meltblown fiber layer on the polylactic acid electrostatic spinning layer by using the meltblown method is specifically: the temperature of the first zone of the screw extruder of the meltblown device is 270-280 ° C, The temperature in the second zone is 280-290 ° C, the temperature in the third zone is 290-295 ° C, the temperature in the fourth zone is 295-300 ° C, the temperature in the fifth zone is 310-320 ° C, and the temperature in the sixth zone is 320-330 ° C.
  • the extrusion molding method is used to extrude the mixture into modified polylactic acid particles.
  • the temperature of the first zone of the screw extruder is 260 ° C
  • the temperature of the second zone is 270 ° C
  • the temperature of the third zone is 280 ° C
  • the temperature of the fourth zone The temperature is 285 ° C
  • the temperature in the fifth zone is 300 ° C
  • the temperature in the sixth zone is 310 ° C
  • the die temperature is 300 ° C.
  • the stirring time is 15 h.
  • the polylactic acid raw material after the surface treatment accounts for 110 parts
  • the polyphenylene sulfide raw material accounts for 35 parts
  • the nano titanium dioxide powder accounts for 12 parts.
  • the extrusion method is used to extrude the mixture into modified polylactic acid particles. Specifically, the temperature of the first zone of the screw extruder is 265 ° C, the temperature of the second zone is 275 ° C, the temperature of the third zone is 283 ° C, and the temperature of the fourth zone It was 288 ° C, the temperature in the fifth zone was 305 ° C, the temperature in the sixth zone was 315 ° C, and the die temperature was 305 ° C.
  • the polylactic acid raw material after the surface treatment accounts for 130 parts
  • the polyphenylene sulfide raw material accounts for 10 parts
  • the nano titanium dioxide powder accounts for 5 parts.
  • the extrusion method is used to extrude the mixture into modified polylactic acid particles. Specifically, the temperature of the first zone of the screw extruder is 265 ° C, the temperature of the second zone is 275 ° C, the temperature of the third zone is 283 ° C, and the temperature of the fourth zone It was 288 ° C, the temperature in the fifth zone was 305 ° C, the temperature in the sixth zone was 315 ° C, and the die temperature was 305 ° C.
  • the formation of a modified polylactic acid meltblown fiber layer on the polylactic acid electrostatic spinning layer by the meltblown method is specifically as follows: the temperature of the first zone of the melt extruder screw extruder is 275 ° C, the temperature of the second zone is 285 ° C, and the third The zone temperature is 292 ° C, the fourth zone temperature is 298 ° C, the fifth zone temperature is 315 ° C, and the sixth zone temperature is 325 ° C.
  • the formation of a modified polylactic acid meltblown fiber layer on the polylactic acid electrostatic spinning layer by the meltblown method is specifically: hot air pressure is 0.8MPa, hot air temperature is 315 ° C, and the receiving distance is 25cm.
  • the formation of a modified polylactic acid meltblown fiber layer on the polylactic acid electrostatic spinning layer by the meltblown method is specifically as follows: the temperature of the first zone of the melt extruder screw extruder is 275 ° C, the temperature of the second zone is 285 ° C, and the third The zone temperature is 292 ° C, the fourth zone temperature is 298 ° C, the fifth zone temperature is 315 ° C, and the sixth zone temperature is 325 ° C.
  • the formation of a modified polylactic acid meltblown fiber layer on the polylactic acid electrostatic spinning layer by the meltblown method is specifically: hot air pressure is 0.8MPa, hot air temperature is 315 ° C, and the receiving distance is 25cm.
  • the electrospinning method using the polylactic acid spinning solution as a raw material to prepare the polylactic acid electrospinning layer is specifically as follows: a spinning voltage is 28 kV, a spinning solution extrusion speed is 1.5 mL / h, and a receiving distance is 15 cm.
  • the surface treatment of the polylactic acid raw material is specifically: providing a dilute solution of a silane coupling agent, wherein the concentration of the silane coupling agent is 6 wt%; adding the polylactic acid raw material to the dilute solution of the alkane coupling agent to obtain a mixed solution, wherein polylactic acid and The mass ratio of the silane coupling agent is 3.5: 1; the mixed solution is stirred, wherein the stirring temperature is: 70 ° C and the stirring time is 15h.
  • the polylactic acid raw material after the surface treatment accounts for 110 parts
  • the polyphenylene sulfide raw material accounts for 35 parts
  • the nano titanium dioxide powder accounts for 12 parts.
  • the extrusion method is used to extrude the mixture into modified polylactic acid particles.
  • the non-woven filter material is prepared by providing a polylactic acid raw material; dissolving the polylactic acid raw material in a DMF solvent to obtain a polylactic acid spinning solution, wherein the polylactic acid concentration is 12% by weight; using an electrostatic spinning method to Lactic acid spinning solution is used as a raw material to prepare a polylactic acid electrostatic spinning layer; again, a polylactic acid raw material and a polyphenylene sulfide raw material are provided; the polylactic acid raw material is subjected to a surface treatment; the polylactic acid raw material, the polyphenylene sulfide raw material after the surface treatment, The nano titanium dioxide powder and the processing aid are mixed to obtain a mixture; the mixture is extruded into modified polylactic acid particles by an extrusion molding method; and a melt-blown method is used to form a modified polylactic acid melt-blown fiber layer on the polylactic acid electrostatic spinning layer.
  • the electrospinning method using the polylactic acid spinning solution as a raw material to prepare the polylactic acid electrospinning layer is specifically as follows: a spinning voltage is 28 kV, a spinning solution extrusion speed is 1.5 mL / h, and a receiving distance is 15 cm.
  • the surface treatment of the polylactic acid raw material is specifically: providing a dilute solution of a silane coupling agent, wherein the concentration of the silane coupling agent is 6 wt%; adding the polylactic acid raw material to the dilute solution of the alkane coupling agent to obtain a mixed solution, wherein polylactic acid and The mass ratio of the silane coupling agent is 3.5: 1; the mixed solution is stirred, wherein the stirring temperature is: 70 ° C.
  • Example 1 The filtration efficiency and filtration resistance tests were performed on Examples 1-8. The test methods followed national standards. The test results were normalized relative to Example 1.

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Abstract

一种熔喷型非织造过滤材料，非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为10-15wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。实现了在混合纤维中搭载纳米二氧化钛颗粒，这使得纤维材料不仅具有过滤效果，而且还具备光催化能力。

Description

一种熔喷型非织造过滤材料 技术领域
本发明涉及空气过滤材料领域，特别涉及一种熔喷型非织造过滤材料。
背景技术
袋式除尘器作为高效除尘设备之一被广泛应用于电厂、冶金，垃圾焚烧等烟气治理系统。袋式除尘器的最大特点是其超高的除尘效率，在实验室高达99.9999％，在实际应用中也达到99.99％，粉尘排放浓度达到10mg/Nm3以下，甚至达到1mg/Nm 3，基本上达到零排放。滤料技术是袋式除尘器的关键技术，滤料使用寿命和除尘效率是袋式除尘器最重要的因素。由于设备、生产技术等条件限制，国内的滤料技术长期落后于国外；尤其在高温滤料方面，国外滤料一直充滞国内滤料市场，从滤料纤维到成品滤袋国外的生产厂家均占统治地位，如PPS纤维长期以来一直被日本的东洋纺和东丽公司垄断。目前袋式除尘技术已能完全满足烟气除尘和稳定可靠运行的需要。而过滤材料是袋式除尘器的关键部件，其性能的好坏直接影响到袋式除尘器的过滤效果及使用寿命。因此研发高质量的耐高温过滤材料是非常重要的。
公开于该背景技术部分的信息仅仅旨在增加对本发明的总体背景的理解，而不应当被视为承认或以任何形式暗示该信息构成已为本领域一般技术人员所公知的现有技术。
发明内容
本发明的目的在于提供一种熔喷型非织造过滤材料，从而克服现有技术的缺点。
本发明提供了一种熔喷型非织造过滤材料，其特征在于：非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为10-15wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。
优选地，上述技术方案中，使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为26-30kV，纺丝液挤出速度为1-2mL/h，接收距离为10-20cm。
优选地，上述技术方案中，将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为4-8wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为3:1-4:1；搅拌混合溶液，其中搅拌温度为60-80℃，搅拌时间为10-20h。
优选地，上述技术方案中，以重量份计，表面处理之后的聚乳酸原料占100-120份、聚苯硫醚原料占30-40份、纳米二氧化钛粉末占10-15份。
优选地，上述技术方案中，利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为260-270℃，第二区温度为270-280℃，第三区温度为280-285℃，第四区温度为285-290℃，第五区温度为300-310℃，第六区温度为310-320℃，模头温度为300-310℃。
优选地，上述技术方案中，利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为270-280℃，第二区温度为280-290℃，第三区温度为290-295℃，第四区温度为295-300℃，第五区温度为310-320℃，第六区温度为320-330℃。
优选地，上述技术方案中，利用熔喷法，在聚乳酸静电纺丝层上形成改 性聚乳酸熔喷纤维层具体为：热空气压力为0.5-1MPa，热空气温度为310-320℃，接收距离为20-30cm。
与现有技术相比，本发明具有如下有益效果：空气过滤材料的理想性能是“高过滤效率，低过滤阻力”，目前的过滤材料并不能有效达到“高过滤效率，低过滤阻力”的要求。一些过滤材料虽然过滤效率很高，但是由于这种材料纤维密度很高，所以过滤阻力很大，为了保证气体循环效率，就需要增大气体循环装置的功率，这将导致能源的浪费。一些材料虽然过滤阻力低，但是由于材料纤维之间空隙较大，所以过滤效率也比较差。为了能够兼顾过滤效率与过滤阻力两方面因素，本发明提出了一种熔喷型非织造过滤材料，这种材料使用了改进的结构、改进的制备方法、改进的组分，发明人发现，PLA和PSS的混合纤维能够更有效的“拦截”空气中的PM2.5颗粒，同时发明人创新性的实现了在混合纤维中搭载纳米二氧化钛颗粒，这使得本发明的纤维材料不仅具有过滤效果，而且还具备光催化能力。相比于现有技术中的过滤材料，本发明的过滤材料过滤效果更好。
具体实施方式
提供以下实施方式是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
实施例1
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为10wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为26kV，纺丝液挤出 速度为1mL/h，接收距离为10cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为4wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为3:1；搅拌混合溶液，其中搅拌温度为60℃，搅拌时间为10h。以重量份计，表面处理之后的聚乳酸原料占100份、聚苯硫醚原料占30份、纳米二氧化钛粉末占10份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为260℃，第二区温度为270℃，第三区温度为280℃，第四区温度为285℃，第五区温度为300℃，第六区温度为310℃，模头温度为300℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为270℃，第二区温度为280℃，第三区温度为290℃，第四区温度为295℃，第五区温度为310℃，第六区温度为320℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为0.5MPa，热空气温度为310℃，接收距离为20cm。
实施例2
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为15wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为30kV，纺丝液挤出速度为2mL/h，接收距离为20cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为8wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为4:1；搅拌混合溶液，其中搅拌温度为80℃，搅拌时间为20h。以重量份计，表面处理之后的聚乳酸原料占120份、聚苯硫醚原料占40份、纳米二氧化钛粉末占 15份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为270℃，第二区温度为280℃，第三区温度为285℃，第四区温度为290℃，第五区温度为310℃，第六区温度为320℃，模头温度为310℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为280℃，第二区温度为290℃，第三区温度为295℃，第四区温度为300℃，第五区温度为320℃，第六区温度为330℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为1MPa，热空气温度为320℃，接收距离为30cm。
实施例3
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为12wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为28kV，纺丝液挤出速度为1.5mL/h，接收距离为15cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为6wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为3.5：1；搅拌混合溶液，其中搅拌温度为:70℃，搅拌时间为15h。以重量份计，表面处理之后的聚乳酸原料占110份、聚苯硫醚原料占35份、纳米二氧化钛粉末占12份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为265℃，第二区温度为275℃，第三区温度为283℃，第四区温度为288℃，第五区温度为305℃，第六区温度为315℃，模头温度为305℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为275℃，第二区温度为285℃，第三区 温度为292℃，第四区温度为298℃，第五区温度为315℃，第六区温度为325℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为0.8MPa，热空气温度为315℃，接收距离为25cm。
实施例4
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为20wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为35kV，纺丝液挤出速度为5mL/h，接收距离为25cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为6wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为3.5：1；搅拌混合溶液，其中搅拌温度为:70℃，搅拌时间为15h。以重量份计，表面处理之后的聚乳酸原料占110份、聚苯硫醚原料占35份、纳米二氧化钛粉末占12份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为265℃，第二区温度为275℃，第三区温度为283℃，第四区温度为288℃，第五区温度为305℃，第六区温度为315℃，模头温度为305℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为275℃，第二区温度为285℃，第三区温度为292℃，第四区温度为298℃，第五区温度为315℃，第六区温度为325℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为0.8MPa，热空气温度为315℃，接收距离为25cm。
实施例5
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料 溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为12wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为28kV，纺丝液挤出速度为1.5mL/h，接收距离为15cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为10wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为1:1；搅拌混合溶液，其中搅拌温度为100℃，搅拌时间为30h。以重量份计，表面处理之后的聚乳酸原料占130份、聚苯硫醚原料占10份、纳米二氧化钛粉末占5份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为265℃，第二区温度为275℃，第三区温度为283℃，第四区温度为288℃，第五区温度为305℃，第六区温度为315℃，模头温度为305℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为275℃，第二区温度为285℃，第三区温度为292℃，第四区温度为298℃，第五区温度为315℃，第六区温度为325℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为0.8MPa，热空气温度为315℃，接收距离为25cm。
实施例6
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为12wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚 乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为28kV，纺丝液挤出速度为1.5mL/h，接收距离为15cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为6wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为3.5：1；搅拌混合溶液，其中搅拌温度为:70℃，搅拌时间为15h。以重量份计，表面处理之后的聚乳酸原料占110份、聚苯硫醚原料占35份、纳米二氧化钛粉末占12份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为280℃，第二区温度为290℃，第三区温度为300℃，第四区温度为310℃，第五区温度为320℃，第六区温度为325℃，模头温度为310℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为275℃，第二区温度为285℃，第三区温度为292℃，第四区温度为298℃，第五区温度为315℃，第六区温度为325℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为0.8MPa，热空气温度为315℃，接收距离为25cm。
实施例7
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为12wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为28kV，纺丝液挤出速度为1.5mL/h，接收距离为15cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为6wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为3.5： 1；搅拌混合溶液，其中搅拌温度为:70℃，搅拌时间为15h。以重量份计，表面处理之后的聚乳酸原料占110份、聚苯硫醚原料占35份、纳米二氧化钛粉末占12份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为265℃，第二区温度为275℃，第三区温度为283℃，第四区温度为288℃，第五区温度为305℃，第六区温度为315℃，模头温度为305℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为290℃，第二区温度为300℃，第三区温度为305℃，第四区温度为310℃，第五区温度为330℃，第六区温度为340℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为0.8MPa，热空气温度为315℃，接收距离为25cm。
实施例8
非织造过滤材料是由如下方法制备的：提供聚乳酸原料；将聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为12wt％；使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；再次提供聚乳酸原料并提供聚苯硫醚原料；将聚乳酸原料进行表面处理；将表面处理之后的聚乳酸原料、聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；利用挤出成型方法将混合物挤出为改性聚乳酸颗粒；利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为28kV，纺丝液挤出速度为1.5mL/h，接收距离为15cm。将聚乳酸原料进行表面处理具体为：提供硅烷偶联剂稀溶液，其中，硅烷偶联剂浓度为6wt％；将聚乳酸原料加入烷偶联剂稀溶液，得到混合溶液，其中，聚乳酸与硅烷偶联剂的质量比为3.5：1；搅拌混合溶液，其中搅拌温度为:70℃，搅拌时间为15h。以重量份计，表面处理之后的聚乳酸原料占110份、聚苯硫醚原料占35份、纳米二氧化钛粉末占12份。利用挤出成型方法将混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为265℃，第二区温度为275℃，第三区温度为283℃，第四区温度为288℃，第五区温度为305℃，第六区温度为315℃，模头温度为 305℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为275℃，第二区温度为285℃，第三区温度为292℃，第四区温度为298℃，第五区温度为315℃，第六区温度为325℃。利用熔喷法，在聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为1.5MPa，热空气温度为330℃，接收距离为10cm。
对实施例1-8进行过滤效率和过滤阻力测试，测试方法遵循国家标准，测试结果相对于实施例1进行归一化处理。
表1
  过滤效率 过滤阻力
实施例1 100％ 100％
实施例2 105％ 98％
实施例3 104％ 95％
实施例4 78％ 134％
实施例5 83％ 151％
实施例6 72％ 169％
实施例7 74％ 145％
实施例8 77％ 140％
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (7)

  1. 一种熔喷型非织造过滤材料，其特征在于：所述非织造过滤材料是由如下方法制备的：
    提供聚乳酸原料；
    将所述聚乳酸原料溶于DMF溶剂中，得到聚乳酸纺丝液，其中，聚乳酸浓度为10-15wt％；
    使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层；
    再次提供聚乳酸原料并提供聚苯硫醚原料；
    将所述聚乳酸原料进行表面处理；
    将表面处理之后的聚乳酸原料、所述聚苯硫醚原料、纳米二氧化钛粉末以及加工助剂混合，得到混合物；
    利用挤出成型方法将所述混合物挤出为改性聚乳酸颗粒；
    利用熔喷法，在所述聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层。
  2. 如权利要求1所述的熔喷型非织造过滤材料，其特征在于：使用静电纺丝法，以聚乳酸纺丝液为原料制备聚乳酸静电纺丝层具体为：纺丝电压为26-30kV，纺丝液挤出速度为1-2mL/h，接收距离为10-20cm。
  3. 如权利要求1所述的熔喷型非织造过滤材料，其特征在于：将所述聚乳酸原料进行表面处理具体为：
    提供硅烷偶联剂稀溶液，其中，所述硅烷偶联剂浓度为4-8wt％；
    将所述聚乳酸原料加入所述烷偶联剂稀溶液，得到混合溶液，其中，所述聚乳酸与所述硅烷偶联剂的质量比为3:1-4:1；
    搅拌所述混合溶液，其中搅拌温度为60-80℃，搅拌时间为10-20h。
  4. 如权利要求1所述的熔喷型非织造过滤材料，其特征在于：以重量份计，表面处理之后的聚乳酸原料占100-120份、所述聚苯硫醚原料占30-40份、纳米二氧化钛粉末占10-15份。
  5. 如权利要求1所述的熔喷型非织造过滤材料，其特征在于：利用挤出成型方法将所述混合物挤出为改性聚乳酸颗粒具体为：螺杆挤出机第一区温度为260-270℃，第二区温度为270-280℃，第三区温度为280-285℃，第四区温度为285-290℃，第五区温度为300-310℃，第六区温度为310-320℃，模头温度为300-310℃。
  6. 如权利要求1所述的熔喷型非织造过滤材料，其特征在于：利用熔喷法，在所述聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：熔喷装置螺杆挤出机第一区温度为270-280℃，第二区温度为280-290℃，第三区温度为290-295℃，第四区温度为295-300℃，第五区温度为310-320℃，第六区温度为320-330℃。
  7. 如权利要求6所述的熔喷型非织造过滤材料，其特征在于：利用熔喷法，在所述聚乳酸静电纺丝层上形成改性聚乳酸熔喷纤维层具体为：热空气压力为0.5-1MPa，热空气温度为310-320℃，接收距离为20-30cm。
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