EP3004436A1 - Procédé de production d'un non-tissé polyacrylique et non-tissé polyacrylique - Google Patents

Procédé de production d'un non-tissé polyacrylique et non-tissé polyacrylique

Info

Publication number
EP3004436A1
EP3004436A1 EP14727861.8A EP14727861A EP3004436A1 EP 3004436 A1 EP3004436 A1 EP 3004436A1 EP 14727861 A EP14727861 A EP 14727861A EP 3004436 A1 EP3004436 A1 EP 3004436A1
Authority
EP
European Patent Office
Prior art keywords
fibers
nonwoven fabric
spinning solution
nozzle
polyacrylonitrile
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.)
Withdrawn
Application number
EP14727861.8A
Other languages
German (de)
English (en)
Inventor
André Lehmann
Mehdi Hassan-Nejad
Michael Doss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of EP3004436A1 publication Critical patent/EP3004436A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • 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
    • D01D5/06—Wet spinning methods
    • 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
    • D01D5/12—Stretch-spinning methods
    • D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major 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
    • D04H1/70—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

Definitions

  • the invention relates to a process for the production of polyacrylonitrile-based nonwovens, in which the polyacrylonitrile spinning solution is forced through the holes of a nozzle beam and stretched many times by an air flow before the filaments are regenerated by wetting with a coagulation medium.
  • the formed fiber curtain is placed on a conveyor belt, washed and dried.
  • the invention relates to such nonwoven fabrics and their use.
  • Nonwovens are textile fabrics in which the surface formation does not take place by weaving or knitting, but by entanglement of the fibers with subsequent fixation. Nonwovens still have high annual growth rates due to their versatility and comparatively low production costs compared to knitted and woven fabrics. Deformation of melts of synthetic thermoplastic polymers by extrusion of the melt through fine nozzle holes in a fiber-flow gas stream through which the fiber is cooled and drawn and stretched to a multiple of its length is a well-known nonwoven production method.
  • the invention thus relates to a process for the production of a nonwoven fabric in which a spinning solution containing or consisting of a solution of polyacrylonitrile and / or at least one copolymer derived therefrom and / or mixtures or blends thereof in a suitable solvent or a mixture of a plurality of solvents in a meltblowing process is extruded through a die block having a plurality of die holes, producing a number of fibers corresponding to the number of die holes, which draws the fibers leaving the die holes of the die block by a temperable air stream which is drawn
  • Fibers are coagulated by spraying with a coagulating liquid and the fibers are laid down to a tangle.
  • a spinning solution of polyacrylonitrile in a suitable solvent is extruded through the holes of a Dü senbalkens, the formed filament curtain aerodynamically verse- Tures, optionally regenerated with a coagulation medium and washed and post-treated and dried at elevated temperature and then wound up.
  • the manufacturing process allows a high variability in density and thickness, which leads to a large surface isotropy. From these advantageous properties, numerous uses arise in the automotive industry as decorative nonwovens, for technical applications, eg filtration media, etc.
  • the at least one solvent or at least one of the solvents of the mixture is selected from the group consisting of acetone, aliphatic amides, especially dimethylformamide (DMF), dimethylacetate (DMAc), dimethylsulfoxide (DMSO), salt hydrate melts, especially zinc chloride hydrate (ZnCl 2 + 4
  • H 2 0 as well as ionic liquids, in particular imidazolium compounds, pyridinium compounds, tetraalkylammonium compounds, in particular 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium acetate, 1-ethyl-3-methylimidazolium acetate and mixtures thereof.
  • the coagulation medium used is a liquid selected from the group consisting of water, mixtures of water with an organic liquid, in particular aliphatic amides, in particular dimethylformamide (DMF), dimethyl acetate (DMAc), dimethyl sulfoxide (DMSO), salt hydrate melts, in particular zinc chloride hydrate (ZnCl 2 + 4 H 2 O), as well as ionic liquids, in particular imidazolium compounds,
  • Pyridinium compounds tetraalkylammonium compounds, in particular 1-butyl-3-methyl-imidazolium chloride, 1-butyl-3-methylimidazolium acetate, 1-ethyl-3-methylimidazoliumacetat and mixtures thereof used.
  • the proportion of polyacrylonitrile and / or a copolymer derived therefrom based on the total spinning solution of 5 to 60 wt .-%, preferably from 15 to 50 wt .-%, particularly preferably from 20 to 40 wt .-%.
  • the solution to be extruded through the die block is filtered, preferably by means of a filter with a mesh size of 20 to 200 ⁇ , preferably 30 to 70 ⁇ .
  • Preferred zero-shear viscosities of the solution used according to the invention are advantageously from 100 to 500 mPas, preferably from 200 to 350 mPas.
  • the temperature of the spinning solution is according to a preferred embodiment when extruded through the nozzle block from 0 to 150 ° C, preferably from 20 to 100 ° C, particularly preferably from 30 to 60 ° C.
  • Preferred delivery rates of the spinning solution per spinhole are set to 0.25 to 5 g / min, preferably 0.5 to 3 g / min, more preferably 0.75 to 1.5 g / min.
  • the temperature of the air stream used for enforcement is from 50 to 200 ° C, preferably from 75 to 150 ° C, particularly preferably from 90 to 130 ° C.
  • the nozzle block may have 150 to 10,000, preferably 500 to 5,000 nozzle holes per meter.
  • the diameter of the nozzle holes is independently 0.05 to 1 mm, preferably 0.25 to 0.6 mm.
  • the stretched fibers are sprayed with the coagulating solution between 10 and 50 cm, preferably between 15 and 40 cm below the nozzle block.
  • the sprayed fibers can further advantageously be deposited on a conveyor belt, preferably at a conveying speed of 0.5 to 10 m / min, more preferably 1 to 5 m / min.
  • the stored fluidized bed is washed, squeezed and / or dried, preferably dried under tension. Subsequently, it can be provided that conditioning and / or solidification of the nonwoven fabric takes place.
  • the invention also relates to a nonwoven fabric which can be produced by the process according to the invention.
  • the nonwoven fabric according to the invention is characterized by a basis weight of 10 to 500 g / m 2 , preferably from 10 to 200 g / m 2 .
  • the longitudinal strength of the nonwoven fabric according to the invention is at least 100 N / m, preferably 500 to 5,000 N / m, more preferably from 1,500 to 3,000 N / m.
  • the transverse strength of the nonwoven fabric according to the invention is preferably at least 40 N / m, preferably from 80 to 3000 N / m, particularly preferably from 1000 to 2500 N / m, in each case measured according to EDENA specification 20.2-89.
  • example 1 780 g of polyacrylonitrile copolymer are dissolved in 2200 g of dimethyl sulfoxide (DMSO) in a rotor-stator agitator at 80 ° C with stirring.
  • DMSO dimethyl sulfoxide
  • the 26% solution is filtered through a 50 ⁇ metal filter.
  • the viscosity of the solution, measured at 50 ° C is 324 Pa s.
  • the filtered spinning solution is made by means of a spinning pump to a 15 cm wide nozzle with 60 nozzle holes from
  • the exiting filaments are drawn through heated by 100 ° C, passing air and sprayed with 50% aqueous DMSO below the nozzle and placed on a conveyor belt at a speed of 1 m / min.
  • the formed web is washed, squeezed and dried under tension.
  • Example 2 700 g of polyacrylonitrile copolymer are dissolved in 2800 g of 1-ethyl-3-methylimidazolium acetate (EmimAc) in a rotor-stator agitator at 40 ° C. with stirring.
  • the 20% solution is filtered through a 50 ⁇ metal filter.
  • the viscosity of the solution, measured at 50 ° C is 230 Pa s.
  • the filtered spinning solution is transferred by means of a spinning pump to a 15 cm wide nozzle with 60 nozzle holes of diameter 0.35 mm with a flow rate of
  • Solution measured at 50 ° C is 247 Pa s.
  • the filtered spinning solution is pressed by means of a spinning pump to a 15 cm wide nozzle with 60 nozzle holes of diameter 0.35 mm with a delivery rate of 1.2 g / hole / min.
  • the exiting filaments are drawn through 125 ° C heated, passing air and sprayed with distilled water 30 cm below the nozzle and placed on a conveyor belt at a speed of 4 m / min.
  • the formed web is washed, squeezed and dried under tension.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne un procédé de production de non-tissés à base de polyacrylonitrile, dans lequel le bain de filage de polyacrylonitrile est forcé à travers les trous d'une poutre munie de buses et étiré de un multiple fois par un flux d'air, avant que les filaments ne soient régénérés par mouillage avec un fluide de coagulation. Le rideau de fibres formé est placé, lavé et séché sur une bande transporteuse. De même, l'invention concerne de tels non-tissés et leur utilisation.
EP14727861.8A 2013-06-05 2014-06-05 Procédé de production d'un non-tissé polyacrylique et non-tissé polyacrylique Withdrawn EP3004436A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013210432.4A DE102013210432A1 (de) 2013-06-05 2013-06-05 Verfahren zur Herstellung eines Polyacryl-basierten Vliesstoffes sowie Polyacryl-basierte Vliesstoffe
PCT/EP2014/061728 WO2014195418A1 (fr) 2013-06-05 2014-06-05 Procédé de production d'un non-tissé polyacrylique et non-tissé polyacrylique

Publications (1)

Publication Number Publication Date
EP3004436A1 true EP3004436A1 (fr) 2016-04-13

Family

ID=50884420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14727861.8A Withdrawn EP3004436A1 (fr) 2013-06-05 2014-06-05 Procédé de production d'un non-tissé polyacrylique et non-tissé polyacrylique

Country Status (4)

Country Link
EP (1) EP3004436A1 (fr)
JP (1) JP2016524052A (fr)
DE (1) DE102013210432A1 (fr)
WO (1) WO2014195418A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105088407A (zh) * 2015-09-15 2015-11-25 苏州顺唐化纤有限公司 一种吸湿性聚丙烯腈纤维的制备方法
CN109401163B (zh) * 2018-10-11 2020-06-30 天津工业大学 一种可熔融聚丙烯腈基树脂、制备方法及其应用
TW202140884A (zh) * 2019-12-17 2021-11-01 奧地利商蘭仁股份有限公司 製造紡黏非織物的方法

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DE1546481A1 (de) * 1961-07-25 1970-08-20 Waldhof Zellstoff Fab Verfahren zur Herstellung von textilaehnlichen Faservliesen nach dem Nassverfahren
US3410940A (en) * 1964-10-12 1968-11-12 Monsanto Co Mist spinning process
CA1073648A (fr) * 1976-08-02 1980-03-18 Edward R. Hauser Non tisse fait de microfibres melangees et de fibres bouffantes crepees
DE3316362C2 (de) * 1983-05-05 1985-03-07 Dynamit Nobel Ag, 5210 Troisdorf Schichtpreßstoff auf Epoxydharzbasis für gedruckte Schaltungen
US5296286A (en) * 1989-02-01 1994-03-22 E. I. Du Pont De Nemours And Company Process for preparing subdenier fibers, pulp-like short fibers, fibrids, rovings and mats from isotropic polymer solutions
DE4018727C2 (de) * 1990-03-23 1994-10-06 Freudenberg Carl Fa Flammbarriere aus Vliesstoff
ES2185045T3 (es) 1996-08-23 2003-04-16 Weyerhaeuser Co Fibras de lyocell y proceso para su preparacion.
JP4113271B2 (ja) * 1996-11-19 2008-07-09 新日本石油株式会社 縦延伸不織布の製法
JP2003260321A (ja) * 2001-12-27 2003-09-16 Toray Ind Inc エアフィルター
DE102005029793B4 (de) * 2005-06-27 2007-04-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vliesstoffe, Verfahren zu deren Herstellung sowie deren Verwendung
TWI330209B (en) * 2005-12-28 2010-09-11 Taiwan Textile Res Inst A method and an apparatus for producing ultra thin fiber of chitosan non-wover clothes
JP4757040B2 (ja) * 2006-01-25 2011-08-24 株式会社クラレ ポリ乳酸組成物製の繊維からなる不織布
AT503625B1 (de) * 2006-04-28 2013-10-15 Chemiefaser Lenzing Ag Wasserstrahlverfestigtes produkt enthaltend cellulosische fasern
US8303888B2 (en) * 2008-04-11 2012-11-06 Reifenhauser Gmbh & Co. Kg Process of forming a non-woven cellulose web and a web produced by said process
DE102008018746A1 (de) 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Cellulosecarbamat-Spinnlösung, Verfahren zur Herstellung eines Cellulosecarbamat-Vliesstoffes, Cellulosecarbamat-Vliesstoff sowie Verwendungszwecke
JP5722222B2 (ja) * 2009-09-14 2015-05-20 出光興産株式会社 スパンボンド不織布および繊維製品

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Also Published As

Publication number Publication date
DE102013210432A1 (de) 2014-12-11
WO2014195418A1 (fr) 2014-12-11
JP2016524052A (ja) 2016-08-12

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