EP0346704A2 - Monofilaments et procédé pour leur fabrication - Google Patents

Monofilaments et procédé pour leur fabrication Download PDF

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Publication number
EP0346704A2
EP0346704A2 EP19890109983 EP89109983A EP0346704A2 EP 0346704 A2 EP0346704 A2 EP 0346704A2 EP 19890109983 EP19890109983 EP 19890109983 EP 89109983 A EP89109983 A EP 89109983A EP 0346704 A2 EP0346704 A2 EP 0346704A2
Authority
EP
European Patent Office
Prior art keywords
component
weight
polyamide
crystalline
copolymer
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.)
Granted
Application number
EP19890109983
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German (de)
English (en)
Other versions
EP0346704B1 (fr
EP0346704A3 (en
Inventor
Klaus Bloch
Josef Weber
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.)
MONOFIL-TECHNIK GESELLSCHAFT FUER SYNTHESE MONOFIL
Original Assignee
Monofil-Technik Gesellschaft fur Synthese Monofile Mbh
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Publication date
Application filed by Monofil-Technik Gesellschaft fur Synthese Monofile Mbh filed Critical Monofil-Technik Gesellschaft fur Synthese Monofile Mbh
Publication of EP0346704A2 publication Critical patent/EP0346704A2/fr
Publication of EP0346704A3 publication Critical patent/EP0346704A3/de
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Publication of EP0346704B1 publication Critical patent/EP0346704B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01F6/88—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

Definitions

  • the invention relates to a process for the production of stretchable monofilaments by extrusion of a ternary molding compound based on thermoplastic materials and monofilaments produced therefrom by extrusion with subsequent stretching.
  • linear polyarylene oxides and sulfides because of the versatile properties of the linear polyarylene oxides and sulfides, in particular their excellent heat resistance, good mechanical properties, excellent hydrolysis and chemical resistance, flame retardant property, good electrical properties and low water absorption, their use in the form of monofilaments is also required.
  • the invention is particularly concerned with the production of high-temperature-resistant monofilaments based on suitable thermoplastics, such as polyphenylene sulfide, which has a crystallite melting point of about 285 ° C., see also Zeitschrift Kunststoffe, 77 (1987), pp. 1023-1027. Because of their high crystallinity, however, fibers and monofilaments of polyarylene sulfides and oxides tend to be brittle. Attempts have therefore already been made to improve the suppleness and processability of polyphenylene sulfide for producing monofilaments by adding polyfluorocarbons, in particular polytetrafluoroethylene, as has become known, for example, from EP-OS 0221 691 or US Pat. No.
  • a molding compound made of polyarylene sulfides with the addition of amorphous polyamides which are understood to be essentially non-crystalline polyamides with a crystallinity of less than 20%, preferably less than 5%, are known, which are particularly suitable for the Production of articles by injection molding is suitable.
  • the invention has for its object to provide a molding composition with which monofilaments based on linear polyarylene oxides or sulfides can be produced with good extrusion properties and reduced brittleness.
  • molding compositions suitable for injection molding or normal extrusion those for the extrusion of monofilaments must also be stretchable.
  • the invention solves the stated problem with a process and a ternary molding composition wherein partially crystalline polyarylene sulfides or oxides are used as component A, crystalline or partially crystalline polyamides as component B and apolar polyfluoroolefins as component C, the mixtures in extruders at temperatures above 270 ° C. are melted and homogenized and the extruded monofilaments are drawn in a ratio of 1 to 3 to 1 to 8 at room temperature or temperatures up to 110 ° C.
  • the selected ternary molding compound it is possible on the one hand to maintain the good properties of the polyarylene sulfides or oxides and at the same time to improve the processability and to reduce the brittleness or sensitivity to cold.
  • the ternary molding composition according to the invention the products to be produced, in particular the monofilaments to be produced by extrusion, which are subsequently stretched and which, surprisingly, does not come at the expense of individual properties. While the use of binary molding compositions always directly improves the property with a significant deterioration of other properties, the present invention surprisingly succeeds in maintaining the existing positive properties by compensating negative properties.
  • monofilaments with excellent temperature resistance and fitness for use are obtained from a ternary molding composition based on thermoplastic plastics, produced by extrusion with subsequent stretching with 65 to 84% by weight of partially crystalline polyarylene sulfides or oxides as component A, 1 to 10% by weight being selected crystalline or partially crystalline polyamides as component B and 15 to 25% by weight of apolar polyfluoroolefins as component C.
  • component A uses polyphenylene sulfide (PPS), polyphenylene oxide (PPO) or polyether ether ketones (PEEK), of which PPS is preferred.
  • PPS polyphenylene sulfide
  • PPO polyphenylene oxide
  • PEEK polyether ether ketones
  • component B used are, in particular, the crystalline polyamide 6, polyamide 66 and polyamide 610, but also semi-aromatic semi-crystalline polyamides, such as the poly-m-xylylene adipamide.
  • the polyamide 66 is the preferred, it results in an improvement of the surface and more favorable elongation and strength behavior of the monofilaments.
  • the apolar fluoroolefins include, in particular, polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoropropylene copolymers (FEP) with 15 to 25% mol% hexafluoropropylene, copolymers of fluorethylene with approx. 5% perfluoroalkyl vinyl ether (PFA), ethylene-chlorotrifluoroethylene copolymers (ECTFE) and / or ethylene-tetrafluoroethylene copolymers (ETFE) are used, of which ETFE is preferred.
  • PTFE polytetrafluoroethylene
  • FEP tetrafluoroethylene-perfluoropropylene copolymers
  • PFA perfluoroalkyl vinyl ether
  • ECTFE ethylene-chlorotrifluoroethylene copolymers
  • ETFE ethylene-tetrafluoroethylene copolymers
  • monofilaments with a balanced property profile are obtained by using PPS, PA 66 and ETFE, a composition according to the features of claim 10 being preferred.
  • the melting and homogenization of the ternary molding compositions is preferably carried out at temperatures in the range between 285 and 305 ° C., possibly also above this.
  • the monofilaments obtained are characterized by high mechanical strength, flexibility, high thermal resistance, favorable sliding friction behavior, dimensional stability, very good chemical resistance, excellent hydrolysis resistance, flame-retardant behavior, good electrical properties and insulation behavior as well as low moisture absorption.
  • the monofilaments can be processed in a variety of ways and are used in particular as paper machine screens and drying belts, filter fabrics in the chemical industry, support fabrics for needle felts for hot gas dedusting in electrical engineering and electronics, cable construction and others. Because of the flexibility and smooth, abrasion-resistant surface that can be achieved on the basis of the ternary molding compound, they can be processed extremely well.
  • FIG. 1 The invention is shown in FIG. 1 in view of a monofilament and is explained using an example.
  • a ternary molding compound was mixed from polyphenylene sulfide, ETFE and PA 66 in a ratio of 77: 20: 3, plasticized and melted in a single-screw extruder at a temperature of 295 ° C and to an undrawn monofilament with a diameter of 0.50 mm ⁇ 0.01 mm extruded. After cooling below 95 ° C, the monofilament is stretched about three times, creating a stretched monofilament with a diameter of 0.31 mm ⁇ 0.01 mm. The stretched monofilament has the following properties: Tear load: 24 to 29 N. Elongation at break: 35 to 40% Shrinkage in boiling water after 5 minutes: 2.3 to 3.7% Shrinkage at 150 ° C after 5 minutes: 10%.
  • the manufactured monofilament is characterized by narrow monofilament diameter tolerances, smooth surface and flexibility of the monofilament.
  • a monofilament according to EP-OS 0221 691 was produced from polyphenylene sulfide and ETFE in a ratio of 80:20 and stretched.
  • the comparison monofilament has the following measured properties: Tear load: 33 to 38 N. Elongation at break: 25 to 60% Shrinkage in boiling water after 5 minutes: 0.5 to 4.7% Shrinkage at 150 ° C after 5 minutes: 6.3 to 13.3%.
  • the comparative monofilament had a rougher surface and less flexibility than the monofilament according to the invention.
  • the stretched comparison monofilament showed diameter deviations between 0.02 and 0.06 mm.
EP89109983A 1988-06-15 1989-06-02 Monofilaments et procédé pour leur fabrication Expired - Lifetime EP0346704B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3820368 1988-06-15
DE3820368A DE3820368C1 (fr) 1988-06-15 1988-06-15

Publications (3)

Publication Number Publication Date
EP0346704A2 true EP0346704A2 (fr) 1989-12-20
EP0346704A3 EP0346704A3 (en) 1990-04-25
EP0346704B1 EP0346704B1 (fr) 1995-04-05

Family

ID=6356608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109983A Expired - Lifetime EP0346704B1 (fr) 1988-06-15 1989-06-02 Monofilaments et procédé pour leur fabrication

Country Status (5)

Country Link
EP (1) EP0346704B1 (fr)
AT (1) ATE120809T1 (fr)
DE (2) DE3820368C1 (fr)
FI (1) FI95817C (fr)
NO (1) NO179681C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496590A2 (fr) * 1991-01-23 1992-07-29 Hoechst Celanese Corporation Monofil de sulfure de polyphénylène et tissus fabriqués avec ces fibres
WO1993013251A1 (fr) * 1991-12-24 1993-07-08 Allied-Signal Inc. Monofilament polymere et feutre fabrique a partir de celui-ci
WO1997037066A1 (fr) * 1996-04-02 1997-10-09 Shakespeare Company Monofilaments extrudes de melanges polymeres rendus compatibles, contenant du sulfure de polyphenylene et textiles issus de ce materiau
DE19948977A1 (de) * 1999-10-11 2001-04-19 Johns Manville Int Inc Polymerzusammensetzungen, Formkörper enthaltend diese, Verfahren zu deren Herstellung und deren Verwendung
US20170009385A1 (en) * 2015-07-07 2017-01-12 Voith Patent Gmbh Monofilament, fabric and production method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001976A1 (de) * 1990-01-24 1991-07-25 Monofil Technik Gmbh Profilierte faser aus kunststoff fuer die armierung von baustoffen oder dergleichen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528335A (en) * 1984-05-18 1985-07-09 Phillips Petroleum Company Polymer blends
EP0221691A2 (fr) * 1985-10-31 1987-05-13 Shakespeare Company Monofilaments, leur procédé de fabrication et tissus fabriqués au moyen de ces monofilaments
EP0292186A2 (fr) * 1987-05-19 1988-11-23 Shakespeare Company Monofilaments, procédé pour leur fabrication et tissus préparés à partir de ces monofilaments

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535332B1 (fr) * 1982-11-03 1986-09-26 Electricite De France Alliage de polymeres, sa preparation et son application a la fabrication d'elements de reacteurs electrochimiques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528335A (en) * 1984-05-18 1985-07-09 Phillips Petroleum Company Polymer blends
EP0221691A2 (fr) * 1985-10-31 1987-05-13 Shakespeare Company Monofilaments, leur procédé de fabrication et tissus fabriqués au moyen de ces monofilaments
EP0292186A2 (fr) * 1987-05-19 1988-11-23 Shakespeare Company Monofilaments, procédé pour leur fabrication et tissus préparés à partir de ces monofilaments

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496590A2 (fr) * 1991-01-23 1992-07-29 Hoechst Celanese Corporation Monofil de sulfure de polyphénylène et tissus fabriqués avec ces fibres
EP0496590A3 (en) * 1991-01-23 1993-04-21 Hoechst Celanese Corporation Polyphenylene sulfide monofilaments and fabrics therefrom
WO1993013251A1 (fr) * 1991-12-24 1993-07-08 Allied-Signal Inc. Monofilament polymere et feutre fabrique a partir de celui-ci
WO1997037066A1 (fr) * 1996-04-02 1997-10-09 Shakespeare Company Monofilaments extrudes de melanges polymeres rendus compatibles, contenant du sulfure de polyphenylene et textiles issus de ce materiau
DE19948977A1 (de) * 1999-10-11 2001-04-19 Johns Manville Int Inc Polymerzusammensetzungen, Formkörper enthaltend diese, Verfahren zu deren Herstellung und deren Verwendung
DE19948977C2 (de) * 1999-10-11 2002-06-20 Teijin Monofilament Ger Gmbh Polymerzusammensetzungen und deren Verwendung
US20170009385A1 (en) * 2015-07-07 2017-01-12 Voith Patent Gmbh Monofilament, fabric and production method

Also Published As

Publication number Publication date
ATE120809T1 (de) 1995-04-15
FI892846A0 (fi) 1989-06-09
FI95817B (fi) 1995-12-15
NO892011D0 (no) 1989-05-19
EP0346704B1 (fr) 1995-04-05
DE3820368C1 (fr) 1990-01-11
FI892846A (fi) 1989-12-16
NO179681C (no) 1996-11-27
DE58909152D1 (de) 1995-05-11
NO892011L (no) 1989-12-18
FI95817C (fi) 1996-03-25
NO179681B (no) 1996-08-19
EP0346704A3 (en) 1990-04-25

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