EP0346704B1 - Verfahren zur Herstellung von Monofilen aus einer ternären Formmasse auf Basis thermoplastischer Kunststoffe und hieraus extrudierte Monofile - Google Patents
Verfahren zur Herstellung von Monofilen aus einer ternären Formmasse auf Basis thermoplastischer Kunststoffe und hieraus extrudierte Monofile Download PDFInfo
- Publication number
- EP0346704B1 EP0346704B1 EP89109983A EP89109983A EP0346704B1 EP 0346704 B1 EP0346704 B1 EP 0346704B1 EP 89109983 A EP89109983 A EP 89109983A EP 89109983 A EP89109983 A EP 89109983A EP 0346704 B1 EP0346704 B1 EP 0346704B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- weight
- crystalline
- semi
- polyamide
- 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.)
- Expired - Lifetime
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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 composition based on thermoplastic materials and monofilaments produced therefrom by extrusion with subsequent stretching.
- linear polyarylene oxides and sulfides because of the versatile properties of 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 concerned in particular 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 those due to the wide melting range 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 this 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.
- ternary molding composition according to the invention of the products to be produced, in particular of the monofilaments to be produced by extrusion, which are subsequently stretched and which, surprisingly, are not at the expense of individual properties. While the use of binary molding compositions always improves the property directly, and significantly worsens other properties, the present invention surprisingly succeeds in maintaining the existing positive properties by compensating negative properties.
- monofilaments with excellent temperature resistance and suitability for use are obtained from a ternary molding composition based on thermoplastics, 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.
- Component B used in particular are 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 in 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 fluoroethylene with about 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
- ECTFE ethylene-chlorotrifluoroethylene copolymers
- ETFE ethylene-tetrafluoroethylene copolymers
- the apolar used Polyfluoroolefins are characterized by extremely low dielectric loss factors. At the same
- 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 excellently.
- 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 comparison 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.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3820368A DE3820368C1 (ja) | 1988-06-15 | 1988-06-15 | |
DE3820368 | 1988-06-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0346704A2 EP0346704A2 (de) | 1989-12-20 |
EP0346704A3 EP0346704A3 (en) | 1990-04-25 |
EP0346704B1 true EP0346704B1 (de) | 1995-04-05 |
Family
ID=6356608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89109983A Expired - Lifetime EP0346704B1 (de) | 1988-06-15 | 1989-06-02 | Verfahren zur Herstellung von Monofilen aus einer ternären Formmasse auf Basis thermoplastischer Kunststoffe und hieraus extrudierte Monofile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0346704B1 (ja) |
AT (1) | ATE120809T1 (ja) |
DE (2) | DE3820368C1 (ja) |
FI (1) | FI95817C (ja) |
NO (1) | NO179681C (ja) |
Families Citing this family (6)
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 |
US5162151A (en) * | 1991-01-23 | 1992-11-10 | Hoechst Celanese Corporation | Polyphenylene sulfide monofilaments and fabrics therefrom |
US5334444A (en) * | 1991-12-24 | 1994-08-02 | Alliedsignal Inc. | Compatibilized polyphenylene ether/polyamide monofilament and felt made thereform |
US5667890A (en) * | 1996-04-02 | 1997-09-16 | Shakespeare Company | Monofilaments extruded from compatibilized polymer blends containing polyphenylene sulfide, and fabrics thereof |
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 |
Family Cites Families (4)
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 |
US4528335A (en) * | 1984-05-18 | 1985-07-09 | Phillips Petroleum Company | Polymer blends |
US4610916A (en) * | 1985-10-31 | 1986-09-09 | Shakespeare Company | Monofilaments, and fabrics thereof |
US4748077A (en) * | 1987-05-19 | 1988-05-31 | Shakespeare Company | Novel monofilaments, fabrics thereof and related process |
-
1988
- 1988-06-15 DE DE3820368A patent/DE3820368C1/de not_active Expired - Lifetime
-
1989
- 1989-05-19 NO NO892011A patent/NO179681C/no not_active IP Right Cessation
- 1989-06-02 EP EP89109983A patent/EP0346704B1/de not_active Expired - Lifetime
- 1989-06-02 AT AT89109983T patent/ATE120809T1/de not_active IP Right Cessation
- 1989-06-02 DE DE58909152T patent/DE58909152D1/de not_active Expired - Lifetime
- 1989-06-09 FI FI892846A patent/FI95817C/fi active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
NO179681C (no) | 1996-11-27 |
DE3820368C1 (ja) | 1990-01-11 |
FI95817C (fi) | 1996-03-25 |
ATE120809T1 (de) | 1995-04-15 |
NO179681B (no) | 1996-08-19 |
FI892846A (fi) | 1989-12-16 |
FI892846A0 (fi) | 1989-06-09 |
FI95817B (fi) | 1995-12-15 |
DE58909152D1 (de) | 1995-05-11 |
NO892011D0 (no) | 1989-05-19 |
NO892011L (no) | 1989-12-18 |
EP0346704A2 (de) | 1989-12-20 |
EP0346704A3 (en) | 1990-04-25 |
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