US20150037562A1 - Polyolefin fiber - Google Patents

Polyolefin fiber Download PDF

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Publication number
US20150037562A1
US20150037562A1 US14/386,970 US201314386970A US2015037562A1 US 20150037562 A1 US20150037562 A1 US 20150037562A1 US 201314386970 A US201314386970 A US 201314386970A US 2015037562 A1 US2015037562 A1 US 2015037562A1
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Prior art keywords
fiber
carbon black
amount
parts
fiber body
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Abandoned
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US14/386,970
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Inventor
Martin Pieter Vlasblom
Pieter Gijsman
Evert Florentinus Florimondus De Danschutter
Roelof Marissen
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DSM IP Assets BV
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DSM IP Assets BV
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Assigned to DSM IP ASSETS B.V. reassignment DSM IP ASSETS B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DE DANSCHUTTER, EVERT FLORENTINUS FLORIMONDUS, MARISSEN, ROELOF, VLASBLOM, MARTIN PIETER, GIJSMAN, PIETER
Publication of US20150037562A1 publication Critical patent/US20150037562A1/en
Abandoned legal-status Critical Current

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    • 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
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • 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
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
    • 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
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/001—Treatment with visible light, infrared or ultraviolet, X-rays
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/006—Additives being defined by their surface area
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/12—Applications used for fibers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component

Definitions

  • the present invention relates to gel-spun polyolefin (PO) fibers having suitable stability and in particular a satisfactory UV stability; the use thereof in, for example, ropes, fishing lines and nets; and a process for making such fibers.
  • PO polyolefin
  • Gel-spun PO fibers in particular gel-spun high performance polyethylene (HPPE) fibers, are generally considered to be relatively stable in various environments and in particular when exposed to UV light. However, under certain circumstances the gel-spun PO fibers show a loss in tenacity, which may lead to a reduced life time. These circumstances can in particular occur when such fibers are used in ropes, fishing lines or fishing nets, architectural structures, or in cargo nets, straps and restraints used in shipping and aviation.
  • HPPE high performance polyethylene
  • One manner of stabilizing gel-spun PO fibers is known from EP 0 343 863, wherein it is disclosed a process for producing a fiber by spinning a composition comprising an ultrahigh molecular weight polyolefin (UHMWPO), a diluent and a phenolic stabilizer in a specific ratio.
  • UHMWPO ultrahigh molecular weight polyolefin
  • the gel-spun UHMWPO fibers manufactured thereof have excellent thermal stability during molding and long-term heat stability.
  • the composition used to spin said fibers may also include organic phosphite stabilizers, organic thioether stabilizers, hindered amine stabilizers and/or metal salts of higher fatty acids.
  • the process disclosed in EP 0 343 863 for manufacturing said gel-spun UHMWPO fibers is a process wherein a solution of UHMWPO containing one or more of the above mentioned stabilizers and a suitable diluent for UHMWPO is spun through a spinneret to obtain UHMWPO filaments and subsequently subjecting said filaments to an extraction process wherein the diluent is extracted with the help of a second diluent.
  • composition used to manufacture the fibers contained a relatively high amount of stabilizers, e.g. of between 0.005 to 5 parts by weight based on 100 parts by weight of the total amount of UHMWPO and the diluent, after carrying out the process disclosed in EP 0 343 863, the amount of stabilizers left in the fibers was dramatically lowered. In most cases, it was observed that the amount of stabilizers left in the gel-spun UHMWPO fibers was so low that said fibers showed little stabilization, if any.
  • stabilizers e.g. of between 0.005 to 5 parts by weight based on 100 parts by weight of the total amount of UHMWPO and the diluent
  • the object of the invention may therefore be to provide such fibers and a process for making them, as well as products containing them.
  • the present invention provides a gel-spun fiber comprising a polyolefin polymer forming a fiber body, wherein a stabilizer is present inside the fiber body, characterized in that the amount of said stabilizer is between 0.001 and 10 parts by weight based on 100 parts by weight of the amount of the polyolefin polymer forming said fiber body and wherein said stabilizer is carbon black.
  • carbon black in the fiber body is made effective by the present invention.
  • the carbon black optimally protects the fiber against degradation, in particular UV-light degradation, while having an acceptable influence on the mechanical properties, e.g. tensile strength, thereof.
  • fibers are understood to mean elongated bodies of indefinite length and with length dimension much greater than their transversal dimensions, e.g. width and thickness.
  • the term fiber may also include a monofilament, a ribbon, a strip or a tape and the like, and can have regular or irregular cross-section.
  • the fibers may have continuous lengths, known in the art as filaments, or discontinuous lengths, known in the art as staple fibers.
  • a yarn according to the present invention is an elongated body comprising a plurality of fibers.
  • a gel-spun fiber is herein understood a fiber manufactured by spinning a solution comprising a polymer and a solvent for said polymer. The spinning of the solution may be effected by extruding said solution through a spinneret containing one or more spinning apertures.
  • the terms “fiber” and “gel-spun fiber” are used interchangeably to describe the present invention.
  • Particularly preferred are gel-spun fibers, which are spun from a solution containing the polyolefin and a solvent for polyolefin which can be extracted from the fiber by evaporation, e.g. naphthenes such as decaline, tetralin or methylcyclohexane. It was observed that for such fibers a more optimal incorporation of the stabilizers is achieved.
  • the gel-spun fibers of the invention are high performance gel-spun fibers, i.e. fibers with a tenacity of at least 1.5 N/tex, preferably at least 2.0 N/tex, more preferably at least 2.5 N/tex or even at least 3.0 N/tex.
  • a high performance gel-spun fibers i.e. fibers with a tenacity of at least 1.5 N/tex, preferably at least 2.0 N/tex, more preferably at least 2.5 N/tex or even at least 3.0 N/tex.
  • fibers typically having a tenacity of at most about 5 to 6 N/tex may be manufactured.
  • such high-strength gel-spun fibers also have a high tensile modulus, e.g. at least 50 N/tex, preferably at least 75 N/tex, more preferably 100 N/tex, most preferably at least 125 N/tex.
  • Tensile strength also simply referred to as strength, tenacity and modulus of fibers can be determined by known
  • a yarn according to the invention preferably has a titer of at least 5 dtex, more preferably at least 10 dtex.
  • the titer of the yarns of the invention are at most several thousand dtex, preferably at most 2500 dtex, more preferably at most 2000 dtex.
  • Yarns containing a plurality of fibers according to the invention preferably have a titer per fiber in the 0.1-50 dtex range, preferably 0.5-20 dtex.
  • the titer of a yarn may also vary widely, for example from 20 to several thousand dtex, but is preferably in the range of about 30-4000 dtex, more preferably 40-3000 dtex.
  • the PO used in accordance with the present invention is polypropylene or polyethylene, more preferably ultrahigh molecular weight polyethylene (UHMWPE).
  • UHMWPE ultrahigh molecular weight polyethylene
  • IV intrinsic viscosity
  • the IV of the UHMWPE is at least 10 dl/g, more preferably at least 15 dl/g, most preferably at least 21 dl/g.
  • the IV is at most 40 dl/g, more preferably at most 30 dl/g, even more preferably at most 25 dl/g.
  • carbon black is present inside the fiber body.
  • the amount of carbon black is at least 0.01, more preferably at least 0.05, even more preferably at least 0.1 parts by weight based on 100 parts by weight of the amount of the polyolefin polymer forming the fiber body.
  • said amount of carbon black is at most 10, more preferably at most 8, even more preferably at most 6, yet even more preferably at most 5, most preferably at most 3 parts by weight based on 100 parts by weight of the amount of the polyolefin polymer forming the fiber body.
  • the amount of carbon black is between 0.01 and 5 parts by weight, more preferably 0.05 and 1 parts by weight based on 100 parts by weight of the amount of the polyolefin polymer forming the fiber body.
  • carbon black is herein understood a composition comprising at least 90 wt % of carbon, more preferably at lest 95 wt %, most preferably at least 98 wt %.
  • Such compositions are commercially available and are usually produced by the combustion in an oxygen-reduced atmosphere of petroleum products, e.g. gaseous or liquid hydrocarbons.
  • the composition is usually in a form of particles, most often in the form of colloidal particles.
  • the remaining wt % of the composition is usually constituted by various metals, e.g. Antimony, Arsenic, Barium, Cadmium, Chromium, Lead, mercury, Nickel, Selenium, Zink and the like.
  • the carbon black has preferably an average particle size as measured by ASTM D3849-07(2011) of at least 5 nm, more preferably at least 10 nm, most preferably at least 15 nm. Said average particle size is preferably at most 100 nm, most preferably at most 75 nm, most preferably at most 50 nm.
  • the carbon-black has preferably a BET-surface as measured by ASTM D6556-10 of at least 50 m 2 /g; more preferably at least 80 m 2 /g; even more preferably at least 105 m 2 /g; most preferably at least 120 m 2 /g.
  • Said BET-surface is preferably at most 500 m 2 /g, more preferably at most 350 m 2 /g, most preferably at most 250 m 2 /g.
  • the present invention also relates to a gel-spinning process for manufacturing the fibers of the invention, said process comprising at least the steps of (a) preparing a solution comprising a PO, a carbon black and a suitable solvent for PO; (b) extruding said solution through a spinneret to obtain a gel fiber containing said PO, said carbon black and said solvent for PO; and (c) extracting by evaporation the solvent from the gel fiber to obtain a solid fiber.
  • the PO is UHMWPE and the solvent is decalin or a derivative thereof.
  • step (a) comprises steps (a1) of providing a mixture containing a first PO and carbon black; and step (a2) preparing a solution comprising a second PO, the mixture of step (a1) and a suitable solvent for both the first and second PO, wherein the first PO has a lower molecular weight than the second PO.
  • the amount of carbon black in the mixture of step (a1) is between 10 wt % and 95 wt % based on the total weight of the mixture, more preferably said amount is between 25 wt % and 80 wt %, most preferably between 35 wt % and 65 wt %.
  • the amount of carbon black in the solution of step (a) or (a2) is at least 1 wt % with respect to the total weight of the solution, more preferably at least 2 wt %, most preferably at least 3 wt %.
  • the first PO in the mixture of step (a1) is a low molecular weight PO, i.e. at most 50% of the molecular weight of the second PO used in step (a) or (a2), more preferably at most 40%, most preferably at most 30%.
  • said first PO is a low molecular weight polyethylene, more preferably a low density polyethylene (LDPE); said second PO is UHMWPE and the solvent is decaline.
  • the gel-spinning process may also optionally contain a drawing step wherein the gel fiber and/or the solid fiber are drawn with a certain draw ratio.
  • Gel spinning processes are known in the art and are disclosed for example in WO 2005/066400; WO 2005/066401; WO 2009/043598; WO 2009/043597; WO 2008/131925; WO 2009/124762; EP 0205960 A, EP 0213208 A1, U.S. Pat. No. 4,413,110, GB 2042414 A, GB-A-2051667, EP 0200547 B1, EP 0472114 B1, WO 2001/73173 A1, EP 1,699,954 and in “ Advanced Fibre Spinning Technology ”, Ed. T. Nakajima, Woodhead Publ. Ltd (1994), ISBN 185573 182 7, these publications and the references cited therein being included herein by reference.
  • the invention relates to a fiber comprising a polymer forming a fiber body, wherein a carbon black is present inside the fiber body, characterized in that said fiber has a tensile strength retention of at least 50% after UV light exposure for at least 2000 hours in accordance with the method described in ISO 4982-2.
  • the specific conditions of ISO 4982-2 are detailed hereinafter in the METHODS OF MEASUREMENT section.
  • said fiber has a strength retention of at least 60%, more preferably of at least 80%, even more preferably of at least 100%, most preferably at least 105%.
  • the fiber of the invention is a fully drawn fiber.
  • the tensile strength thereof shows an increase after said fiber is treated or exposed with UV light. Therefore, although the term strength retention usually implies that the tensile strength of a fiber after UV light exposure is lower than the initial tensile strength of said fiber, i.e. the strength before UV exposure, in accordance with the present invention it is not excluded that the tensile strength after said UV light exposure is higher than said initial tensile strength. Preferably the strength retention is after an exposure of at least 2500 ours, more preferably of at least 3000 hours.
  • the amount of carbon black is between 0.001 and 10 parts by weight based on 100 parts by weight of the amount of the polymer forming said fiber body.
  • said polymer is polyolefin, more preferably UHMWPE.
  • said fiber is a gel-spun fiber, more preferably a gel-spun polyolefin fiber, most preferably a gel-spun UHMWPE fiber.
  • the invention also relates to a method of increasing the strength of a fiber, comprising the steps of:
  • Preferred embodiments of the fiber used in the method of the invention are those presented hereinabove in relation to the fiber of the invention.
  • the invention also relates to a fiber comprising a fiber body, said fiber body being manufactured from an ultrahigh molecular weight polyethylene (UHMWPE) having an initial intrinsic viscosity (IV) of at least 5 dl/g, said fiber body further comprising carbon black, wherein after exposing said fiber to UV light for at least 1400 hours in accordance with the method described in ISO 4982-2, the IV of the UHMWPE forming said fiber body is at least 60% of the initial IV of the UHMWPE used to manufacture said fiber body.
  • UHMWPE ultrahigh molecular weight polyethylene
  • IV intrinsic viscosity
  • the IV of the UHMWPE forming said fiber body is at least 75% of the initial IV of the UHMWPE used to manufacture said fiber, more preferably at least 85%, most preferably at least 95%.
  • the IV of the UHMWPE forming said fiber body is at least 7.5 dl/g, more preferably at least 10 dl/g, even more preferably at least 13 dl/g, most preferably at least 16 dl/g.
  • the amount of carbon black is between 0.001 and 10 parts by weight based on 100 parts by weight of the amount of the UHMWPE forming said fiber body.
  • the fibers of the invention containing the carbon black can be used in any application where such fibers are normally applied.
  • the fibers can be used in architectural textiles, ropes, fishing lines and fishing nets, and cargo nets, straps, and restraints in shipping and aviation, gloves and other protective apparel.
  • the invention relates to an article, preferably a rope, a glove, a protective apparel, a fishing line, a net, or a medical device comprising the fibers of the invention.
  • FIG. 1 ( 1 ) shows the variation in tensile strength retention (in %) of a fiber exposed to UV light for a certain period of time expressed in hours;
  • FIG. 1 ( 2 ) shows the variation of the tensile strength (in cN/dtex) of said fiber for the same period of time.
  • Intrinsic Viscosity is determined according to method PTC-179 (Hercules Inc. Rev. Apr. 29, 1982) at 135° C. in decalin, the dissolution time being 16 hours, with BHT (Butylated Hydroxy Toluene) as anti-oxidant in an amount of 2 g/l solution, by extrapolating the viscosity as measured at different concentrations to zero concentration;
  • Dtex fibers' titer (dtex) was measured by weighing 100 meters of fiber. The dtex of the fiber was calculated by dividing the weight in milligrams to 10;
  • Tensile properties of fibers are defined and determined on multifilament yarns as specified in ASTM D885M, using a nominal gauge length of the fibre of 500 mm, a crosshead speed of 50%/min and Instron 2714 clamps, of type “Fibre Grip D5618C”. On the basis of the measured stress-strain curve the modulus is determined as the gradient between 0.3 and 1% strain. For calculation of the modulus and strength, the tensile forces measured are divided by the titre, as determined by weighing 10 metres of fibre; values in GPa are calculated assuming a density of 0.97 g/cm 3 .
  • Tensile properties of fibers having a tape-like shape are defined and determined at 25° C. on tapes of a width of 2 mm as specified in ASTM D882, using a nominal gauge length of the tape of 440 mm, a crosshead speed of 50 mm/min.
  • Elongational stress (ES) of an UHMWPE is measured according to ISO 11542-2A
  • the tensile strength retention was determined by measuring the tensile strength of the fiber as described hereinabove, after exposing the fiber for a set number of hours to UV light in accordance with the ISO 4982-2 method.
  • TGA Thermal Analysis
  • a number of yarns were prepared by gel spinning fibers from a solution containing carbon black (Printex®F80, Degussa with a BET of 220 g/m 2 and a primary particle size of 16 nm), UHMWPE and decalin as solvent for UHMWPE. The decalin was subsequently extracted by evaporation. The amount of UHMWPE in solution was about 10 wt % based on the total weight of the solution. Each of the yarns was drawn to a linear density of about 110 dtex. The concentration of carbon black in the solution was varied between 0.1 and 10wt % with respect to the amount of UHMWPE. A number of yarns were also spun from the above mentioned solution without the carbon black.
  • Printex®F80 Degussa with a BET of 220 g/m 2 and a primary particle size of 16 nm
  • the decalin was subsequently extracted by evaporation.
  • the amount of UHMWPE in solution was about 10 wt % based
  • a partially drawn yarn and a fully drawn yarn prepared from a solution containing 3 wt % of Printex® F80 based on the amount of UHMWPE where analyzed for their carbon black content by TGA.
  • the samples contained 2.2 and 2.4 parts by weight with respect to the amount of UHMWPE in said fiber, respectively.
  • the amount of carbon black left in the fiber after the evaporation of decalin was between 0.001 and 10 parts by weight with respect to the amount of UHMWPE in said fiber.
  • the strength retention ( 100 ) after certain hours of UV exposure ( 101 ) of a fiber sample ( 102 ) containing no carbon black is much lower when compared to that of a fiber sample ( 103 ) which was mildly drawn and containing 2.2 parts by weight of carbon black as well as to that of a fiber sample ( 104 ) which was fully drawn and containing 2.4 parts by weight of carbon black.
  • the tensile strength of the fiber sample ( 102 ) is practically zero, while the tensile strength of the fiber sample ( 103 ) is about 95% of its tensile strength measured at zero hours.
  • the tensile strength of the fiber sample ( 104 ) is increased with about 9% after 3000 hours exposure.
  • the same behavior can be observed when the variation of the fiber sample's strength ( 105 ) is analyzed in relation to the UV exposure ( 101 ) as shown in FIG. 1 ( 2 ).
  • fully drawn fiber is herein understood a fiber drawn to at least 75%, more preferably at least 85%, most preferably to at least 95% of a maximum draw ratio, wherein the maximum draw ratio is the ratio above which the fiber would break.
  • the maximum draw ratio can be determined by routine experimentation by the skilled person, for example by drawing said fiber at increasing drawing ratios under the same drawing conditions, until the fiber breaks.
  • a mildly drawn fiber can be for example a fiber drawn to at most 50%, moreover to at most 30% of the maximum draw ratio.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Artificial Filaments (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
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US14/386,970 2012-03-20 2013-03-19 Polyolefin fiber Abandoned US20150037562A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12160261 2012-03-20
EP12160261.9 2012-03-20
PCT/EP2013/055678 WO2013139784A1 (en) 2012-03-20 2013-03-19 Polyolefin fiber

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US (1) US20150037562A1 (de)
EP (1) EP2828333B1 (de)
JP (2) JP2015515554A (de)
KR (1) KR102025454B1 (de)
CN (1) CN104204066B (de)
CA (1) CA2865228A1 (de)
CL (1) CL2014002450A1 (de)
DK (1) DK2828333T3 (de)
EA (1) EA030165B1 (de)
ES (1) ES2592159T3 (de)
IN (1) IN2014DN06700A (de)
LT (1) LT2828333T (de)
MX (1) MX344821B (de)
PT (1) PT2828333T (de)
WO (1) WO2013139784A1 (de)

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CN115679467A (zh) * 2017-07-14 2023-02-03 帝斯曼知识产权资产管理有限公司 均匀的经填充的纱线

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