CN102753740A - Thermoplastic polymer yarns and films including dry lubricants and industrial textiles made therefrom - Google Patents

Thermoplastic polymer yarns and films including dry lubricants and industrial textiles made therefrom Download PDF

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Publication number
CN102753740A
CN102753740A CN2011800084891A CN201180008489A CN102753740A CN 102753740 A CN102753740 A CN 102753740A CN 2011800084891 A CN2011800084891 A CN 2011800084891A CN 201180008489 A CN201180008489 A CN 201180008489A CN 102753740 A CN102753740 A CN 102753740A
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polymer element
industrial textile
polymer
dry lubricant
monofilament
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CN2011800084891A
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Chinese (zh)
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斯科特·梅克皮斯
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AstenJohnson Inc
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AstenJohnson Inc
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • 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
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/58—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads characterised by the coefficients of friction
    • 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
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—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
    • 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
    • D04H3/04—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 in rectilinear paths, e.g. crossing at right angles
    • 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
    • Y10T428/19—Sheets or webs edge spliced or joined
    • 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
    • Y10T428/249922—Embodying intertwined or helical component[s]
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/268—Monolayer with structurally defined element
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2916—Rod, strand, filament or fiber including boron or compound thereof [not as steel]
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2927—Rod, strand, filament or fiber including structurally defined particulate matter
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3382—Including a free metal or alloy constituent
    • Y10T442/339—Metal or metal-coated strand
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3976—Including strand which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous composition, water solubility, heat shrinkability, etc.]
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/643—Including parallel strand or fiber material within the nonwoven fabric

Abstract

An extruded oriented thermoplastic polymeric element for industrial textiles, and textiles comprising polymeric elements. The polymeric elements are constructed of a material selected from yarn material, fiber material and film, and comprise a thermoplastic polymer, and at least one dry lubricant, selected from molybdenum disulphide, tungsten disulphide, boron nitride, and a soft metal, the dry lubricant comprising particulate matter having an average particle size between about 0.05[mu] and about 100[mu], and present in the polymeric element in an amount from between about 0.1% and about 10% parts by weight, based on a total weight of the polymeric element. The polymeric elements can be used as yarns in woven and non woven textiles, and as seaming elements. The polymeric elements provide increased abrasion resistance in industrial textiles, and reduced coefficient of friction.

Description

Comprise thermoplastic polymer yarn and the film of dry lubricant and the industrial textile of processing thus
Technical field
The present invention relates to the oriented thermoplastic polymer element, it comprises yarn, fiber and film, the ABRASION RESISTANCE of increase is provided and in mixing their industrial fabric, facilitates reducing of frictional behavior.Definitely; The present invention relates to the oriented thermoplastic polymer element; Wherein based on the gross weight of these elements by having mixed dry lubricant like the particle of molybdenum bisuphide, boron nitride or tungsten disulfide from about 0.1% to about 10% amount, and relate to braided fabric or the non-braided fabric of processing or mix these elements by these elements.
Background technology
Industrial textile (being also referred to as technological textiles) is used in many consumption and the commercial Application, or as the assembly of final products or be used for the manufacturing of one or more assemblies.These textiless are normally by the thread braided structure of polymer yarns, and these polymer yarn comprise polyester, polypropylene, polyamide, polyethylene, glass fibre or other similar materials; They can also be by film, staple fibre, the array of yarns of sealing and as the non-braided structure of similar assembly assembling as known in the art.Use textiles by a plurality of spiral coil assembly industries according to known with ining addition, these spiral coils pass through hinge yarn or fibula yarn with the radial type layout engaged be connected mutually.Used assembly yarn, fiber or the film of assembling textiles can be monofilament, multifibres, spun yarn, cable, homogeneous strata (homolayer) or plural layers etc.A the present invention specifically general categories of relevant industrial textile is to filter and the conveying fabric, and in particular for paper machine clothing.
But; Though hereinafter the present invention specifically discusses with reference to paper machine clothing; But it also can be applicable to carry or to be filtered into purpose and can be by the industrial textile of any kind of polymer element structure, includes, but is not limited to the textiles that the film through braiding spirality or scroll assembly, prefabricated textured yarn assembly and optionally otch and embossing constitutes, in every kind of situation; Single-ply cloth is provided, or one or more exterior layers are provided in multi-ply construction.In addition, further discuss as hereinafter, the present invention can be applicable to the seam element that is used for industrial textile, and it comprises by film and forming or as spirality seam loop or this class component of forming as the seam lumen.
In the high speed paper machine operation, the high water-containing pulp of being made up of about 99% water and 1% papermaking solid is ejected on the forming fabric of circulatory motion with high speed and high accuracy in modern times.Along with paper pulp through the fabric drainage, through multiple dewatering elements and drainage box, form the nascent net width of cloth, the nascent net width of cloth will be to adhere to voluntarily and be made up of about 25% papermaking solid when finishing in shaping workshop section.Then this net width of cloth is sent to the squeezing section of paper machine from forming fabric, wherein this net width of cloth through one or more rollers, removes extra liquid through mechanical device with at least one press felt in one or more rollers.To net the width of cloth then and be sent in the dry workshop section of paper machine, and wherein net the width of cloth and be supported on one or more dry fabrics,, wherein remove abundant residues moisture content through vaporising device along with it is advanced through a series of heating drums with serpentine fashion.End at paper machine is wound into big volume with the finished product paper then, and can use further ornamenting operation.Face tissue and paper handkerchief forming process are similar, but adopt so-called wind to pass through the air-dry workshop section that dry (TAD) fabric is made machine with paper sheet delivery through face tissue, wherein make its drying, and in final products, produce multiple physical characteristic.
Forming fabric, press felt, dry fabric and TAD fabric for final on paper machine the quality of the paper product of output be vital.With the simplest form, these Fabric Design become to make the liquid from paper pulp can pass through fabric with controlled way, even supporting are provided for simultaneously the papermaking solid.They also are intended to for the paper web of they formation and conveying coherent supporting is provided.Each fabric of these fabrics is designed to obtain optimal performance in its preset environment uniquely.Forming fabric should approach as much as possible, so that an internal void volume and a year water capacity are minimized, maximizes the supporting of papermaking fabric and other solids of their conveyings simultaneously.Press felt provides voidage, and it can be sent into wherein the water of from the net width of cloth, extruding in the squeezing roller so that make paper dryer.Dry fabric is designed to carry and the support mesh width of cloth, simultaneously residual water is evaporated from paper.The a plurality of different manufacturers of papermaking fabric carried out extensive work with textiles that thin but enough solid and dimensionally stable are provided so that they can tolerate the environmental forces that is exposed.Be exposed in high temperature and the humidity on these fabric conventions, and contact the abrasion of generation from the Continuous Sliding of their various fixed assemblies of below when advancing with the speed that surpasses 1000 meters of per minutes.
Adopt industrial filtration in the multiple application and carry fabric (braiding or non-woven having concurrently), include but not limited to wastewater treatment, water supply, food processing, drug-treated, chemical treatments and pigment and coating operation.The same with papermaking fabric, these more general-purpose industrial be to require to select and the thermoplastic polymer yarn or the film that design are processed by its characteristic usually with textiles according to final use.
Be devoted to improve the performance characteristic of these textiless, adopted far-ranging multiple yarn and thin-film material in the mill, comprise natural fabric, metal and the yarn and the film that form by thermoplastic polymer recently.The main polymer that uses comprises polyester (in particular for PETG (PET)), polybutylene terephthalate (PBT) (PBT), polytrimethylene terephthalate (PTT), PEN (PEN) and 1 in the manufacturing of papermaking at present and industrial filtration fabrics; 4-cyclohexanedimethanol-terephthalic acid (TPA)-altogether-M-phthalic acid (PCTA); And multiple known mixture and copolymer; And nylon (like polyamide 6 and polyamide 6/12), and multiple mixture and preparation.The mixture that comprises polyester and polyurethane
Figure BDA00001977847000031
polyether-ether-ketone (PEEK) and polyphenylene sulfide (PPS) for other non-limiting examples of this type of application of known and employed thermoplastic polymer; Also known and use other materials.
Papermaking fabric (particularly be shaped and dry fabric) usually typically uses the thermoplastic polyester monofilament that is provided with along the machine direction (MD) of final fabric and weaves through wire material and as the polyester of the parallel material of arranging by crosscut machine direction (CD) or polyamide monofilament, the machine end (MS) of fabric upward most of grinding force put on the longitudinal size of monofilament along transverse direction.The preferred polyester of these application is PET; But, use PBT, PTT, PCTA and PEN and comprise PET and the copolymer of other polyester and mixture also are well-known.Usually preferred polyamide is as at least a portion of forming fabric equator material, because they can more tolerate abrasion than polyester.But; Well-knownly be; The physical property of polyamide (the particularly curling behavior in their water-wet behavior and the fabric process) is all brought a difficult problem in making (particularly braiding, HEAT SETTING and seam operation) and final the application, wherein in the outward flange of forming fabric, possibly curl.These difficult problems be since polyamide due to the different machineries and thermal characteristics of polyester.Well-known also have, and polyamide is owed inertia than polyester usually in sour environment, and will degenerate quickly.
Polyester (particularly PET) is a stable polymer, because its stability characteristic (quality) and relatively easily mobile from the whole fabric manufacturing process that is woven into HEAT SETTING and seam.The end user of the product of braiding seldom therefore made fabric and get into trouble; Because this kind fabric (does not for example often have significant performance issue; Tiltedly move, fold etc.), and can the paper shaping stage with return/clean-up phase do not have and significantly recycles difficultly.But in the application of bigger requirement, fabric is exposed in the higher than usual abrasion situation in paper machine, in being exposed to high vacuum levels along with they when a plurality of dewatering unit, monofilament polyester possibly wear and tear apace.The previous trial that improves the MS ABRASION RESISTANCE of these fabrics focuses on to be added or the alternative monofilament of forming with other polymer that better ABRASION RESISTANCE is provided.For example people such as Bhatt is in US 5,169,711 with US 5,502,120 in this type of work has been described, the two are the openly purer polyester ABRASION RESISTANCE raising of mixture of polyester and thermoplastic polyurethane all.Well-known other similar work in addition.People such as Bhatt are at US 5,169,711 with US 5,502,120 in the mixed with polymers material described than the known advantage of polyamide be their curling behaviors during braiding and HEAT SETTING, and their wear-resisting abilities of being able to confirm.These polyester/polyurethane mixtures often show more as polyester, thereby facilitate the improvement of fabric processing.
Seam area at industrial textile; In order discontinuous between these zones and between the adjacent weaving body to be reduced to minimum; Known and used multiple seam element, and these seam elements are formed by the identical or very compatible polymer architecture of polymer with structure weaving body.This type of seam element for example comprises (spirality seam loop) and is designed to multiple structure that the edge of weaving is accordingly connected and links together.
The argumentation of prior art
Molybdenum bisuphide has been employed the additive as polyamide for many years, so that improve the ABRASION RESISTANCE and the total coefficient of friction of reduction of polyamide material, thereby increases the abrasion life-span of the assembly of polymer manufacturing thus.This is known with molybdenum bisuphide as the manufacturing that composition material is used for polyamide monofilament.For example, US4,370,375 (Bond) openly comprise the x wire (transverse strands) of the polyamide monofilament of molybdenum bisuphide and lithium bromide as the forming fabric of braiding.
GB 2,315, and 499 (Draper) openly mix the microencapsulation photochromic dyes in the polymeric matrix that uses 10-20 DENIER staple fibre in the press felt cotton-wool.Textile yarn or spinning coating can comprise photochromic material.Draper openly can be incorporated into other additives that comprise molybdenum bisuphide in the dye microcapsule, to strengthen fabric attribute (for example increasing lubricity).
WO 00/55402 (Hinterkeuser) discloses a kind of monfil based on polyamide, it is said its pass through with US 4,370, the polyamide that the disclosed similar manner of 375 (Bond) mixes the molybdenum sulfide of effective dose provides the ABRASION RESISTANCE that improves than pure polyamide.
US 5; 585,430 people such as () Patel are open from for example nylon ( polyamide 6,6/6,6/10,6/12), polyester or copolyesters, PEEK, PPS and the pintle wire that is no more than sheet lubricant (like graphite, molybdenum sulfide, carclazyte or the silicate) extrusion molding of 3wt%.This flaky material it is said because retardance or friction reduce and be easy to pintle wire is inserted in press fabric and the dry fabric, and reduces the abrasion between fibula and the endless loop.
US 2009/0209695 (people such as Yu) discloses a kind of thermoplastic compounds, and it comprises 10 to 98pbw carbonate polymer, 2 to 90pbw polyester polymers and 0 to 5pbw polylactic acid polymer.Openly middle statement (referring to the 7th page the 41st section) can be added one or more fillers (comprising molybdenum sulfide) in said composition.
From US 6,949,289 people such as () Lawton also know, use molybdenum bisuphide as coating; And know from US 2006/0110597 (Koralek) and US 4,719,066 (people such as Wells), add molybdenum to polyester and polyamide.
In the manufacturing of industrial textile (specifically be preset as and in the papermaking operation, use) polymer element (comprising yarn, fiber and film) there is well-known requirement; The improvement that is superior to polyester is provided on ABRASION RESISTANCE; Simultaneously than the frictional behavior of similar these textiless of fabric minimizing that form by the prior art material, and further avoid relevant with the polyamide processing difficult problem of following.The present invention explores this type of polymer element is provided, and the textiles that forms thus.
Have been found that now; Through the frictional behavior that increases ABRASION RESISTANCE simultaneously and reduce industrial textile; Be suitable for final widely extruded type of using and oriented thermoplastic polymer element (this type of polymer element provides with the form that is fit to, and comprises yarn, fiber or film) through providing, and comprise at least a dry lubricant of the suitable amount that is selected from one group of dry lubricant that is fit to; It is possible that remarkable improvement is provided
Summary of the invention
During hereinafter was discussed, term " yarn " was meant continuous line.Yarn can comprise the monofilament that is formed and can be had or can not have core-skin structure by aforesaid oriented thermoplastic polymer, and can comprise the polymer multifibres and have the cable arrangement of forming concurrently by monofilament or multifibres or the two.Can provide this type of yarn to be used for mixing braiding or non-woven textile constructions.
As used herein; Term " fiber " can comprise the analog of known and use in the manufacturing of staple fibre (is usually formed the small diameter fibers of length variations by nylon or polyamide, it is cemented in usually in the jointing material as the cotton-wool of press felt through for example cushion) and industrial textile.
As used herein, term " film " be meant single shaft to or twin shaft to the thin flexible sheet material of forming by one or more thermoplastic polymer layers that direction is set.
As used herein, term " dry lubricant " be meant can with do particle form provide with any material of selected thermoplastic polymer fusion.For the object of the invention is described, dry lubricant comprises molybdenum bisuphide, tungsten disulfide, boron nitride and comprises the soft metal of indium (In), plumbous (Pb), tin (Sn), bismuth (Bi), cadmium (Cd) and silver (Ag).
As used herein, expression mode " %pbw " is meant weight percent part of total composition of being made up of dry lubricant or thermoplastic polymer.
The dry lubricant that uses in the relevant thermoplastic polymer of the present invention, their size with respect to mean particle size with micron (μ, wherein 1 μ=1 * 10 -6M) or nanometer (1 nanometer=1 * 10 wherein -9M) represent.In thermoplastic polymer element of the present invention, dry lubricant provides as very little particle usually, and it has the mean particle size from about 0.05 μ to about 100 μ.
Molybdenum bisuphide is that chemical formula is MoS 2Inorganic compound.Its outward appearance is similar with graphite with sense of touch, and is widely used as kollag because of its low frictional behavior.Be known that and also use other polymer of this material " filling " (particularly polyamide).Some non-restrictive example of having added the polymer of molybdenum bisuphide comprise Nylatron TM(trade mark of DSM Plastics company), Teflon TM(Du Pont company gives the trade mark of polytetrafluoroethylene (PTFE)) and Vespel TM(Du Pont company gives the trade mark of polyamide-based polymers).Also known and use other materials.
Tungsten disulfide also is an inorganic compound, and its molecular formula is WS 2It exists as the rare mineral that is called tungstenite natively, and has and MoS 2The hierarchy of structural similarity; It is one of the most lubricated known material.Tungsten disulfide is at first by the dry lubricant of NASA exploitation as the space shuttle assembly of working in the vacuum.Be known that this material is used in plastic mo(u)lding, bearing, gear-box, cutting and shaping jig, in screw thread and the spline assembly with reduce wear, plucking and adhesion, and vital multiple other that are used for reducing friction are used.
Boron nitride also is an inorganic compound, and its molecular formula is BN, is made up of the boron (B) and nitrogen (N) atom of equal amount.The double hexagon form with crystal diamond shaped form and similar graphite of BN exists; Commonly used is the hexagon form.Boron nitride does not exist at occurring in nature, but is processed by boric acid or boron oxide.
The soft metal is naturally occurring element like indium (In), plumbous (Pb), tin (Sn), bismuth (Bi), indium (In), cadmium (Cd), silver (Ag), is known that owing to its low shearing strength and plasticity have lubricated attribute.
The present invention relates to be used in the oriented thermoplastic polymer element in the industrial textile, and sneak into the very little particle of effective dose before extruding therein, these particles have the mean particle size from about 0.05 μ to about 100 μ and are made up of dry lubricant.Dry lubricant preferably is selected from molybdenum bisuphide, tungsten disulfide, boron nitride or at least a like at least a soft metal of indium (In), plumbous (Pb), tin (Sn), bismuth (Bi), cadmium (Cd) and silver-colored (Ag).The invention still further relates to industrial textile, in particular for papermaking and filtration fabrics, it comprises these novel polymeric construction element.Can dry lubricant be incorporated in the fluoropolymer resin; The masterbatch extruding polymerization construction element of the amount through dry lubricant quantitatively enough is provided therefrom, the amount of this dry lubricant between with based on about 0.1% weight portion (pbw) of the gross weight of polymer element between about 10%pbw.Masterbatch is made up of polymer (being preferably polyester), and the dry lubricant (a plurality of materials of listing like preceding text a kind of) that utilizes about 15%-20%pbw is to its enhancing.Masterbatch is mixed in the polymer, and by this polymer-extruded fiber, yarn or film, it quantitatively enough provides the ultimate density from about 0.1%pbw to about 10%pbw in extrudate.Perhaps, can use the gravity feeding or the similar devices that are located near the extruder extrusion to come easily dry lubricant to be added in the extrudate.It is about 0.1% that the concentration of dry lubricant is lower than, and it can not produce on the ABRASION RESISTANCE of resulting fiber, yarn or film and significantly improve, and this concentration surpasses 10% then can provide further useful effect.Preferably, extrude and directed fiber, yarn or film in the concentration of dry lubricant will be to about 7%pbw from about 0.5%.Most preferably, extrude and directed fiber, yarn or film in the concentration of dry lubricant be from about 1%-5%pbw.
In the situation of using polyester constructing polymer element, this can be selected from like grade commonly used in the monofilament manufacturing and be suitable at the polyester like the industrial textile of papermaking fabric.Preferably, polyester is selected from the group of being made up of PETG (PET), polybutylene terephthalate (PBT) (PBT), PEN (PEN) etc.Polyester alloy and the polyblend that comprises polyester (like US5, the PET-TPU mixture of describing among 169,711 (Bhatt)) and other similar polyester (polyester of using always in the manufacturing like the industrial textile of papermaking and similar application) all are fit to.
Preferably, the polyester that mixes masterbatch will have at least 0.55 intrinsic viscosity (IV); Preferably, IV will be from about 0.60 to about 1.0.More preferably, the IV of this polyester will be from about 0.80 to about 0.95, so that the final polymer element of the physical characteristic that is suitable for using in textiles at paper machine and similar industrial is provided.For the fabric applications of these types, the IV of the polyester of final polymer element should be at least 0.7 or higher.Under the situation that this paper points out, intrinsic viscosity is that polyester dissolves measurement at the mixed solvent of the 60:40pbw mixture that comprises phenol and (1,1,2,2)-tetrachloroethanes under 30 ° of C.Can also use the 50:50pbw mixture of trifluoroacetic acid and carrene to measure IV.
In general, mix dry lubricant the masterbatch polyester with the IV that has than the IV of its polyester that adds to is lower.But the IV of masterbatch polyester can be equal to or greater than the IV with its polyester that adds to.Extruding needs heating, and this will reduce the intrinsic viscosity of polyester usually, and reduce the final response of resulting polymer element.
The dry lubricant that uses among the present invention should have basic single-size size and structure.Preferably, this dry lubricant has about 0.05 mean particle size to about 100 μ.Preferably, this dry lubricant is dispersed in the interior and final polymer element of selected polymer equably.
Can adopt any order that is suitable for manufacturing operation to carry out the mixing of the chemical composition of extruding yarn of the present invention, fiber and film.But,, the dried mixing with acquisition in final products of the polymeric material and the masterbatch material of requirement expected the dry lubricant of concentration and guarantees that the reasonable uniformly dispersing of dry lubricant is easily according to finding.Perhaps, can add dry lubricant easily through the gravity feeding that measures in known manner at the extruder place.
For monofilament, after the mixed chemical composition, prepare yarn according to conventional techniques.With the polymer of fusing together with the dry lubricant that mixes with it and any other additive (as, auxiliary agent, colorant etc.) be expressed in the hardening media through mould, then with its orientation.Can use single screw rod or double screw extruder to come extruded monofilament according to known method; The expection twin-screw is extruded dry lubricant is mixed with selected polymer more equably, and so is optimal way at present.In general, the diameter of the circular cross section monofilament that polyblend of the present invention forms will be from about 0.08mm to about 1.2mm, and preferably from about 0.12mm to about 0.5mm.After extruding; The polymeric material of extruding will pass through orientation step, comprise single shaft to or biaxial stretching with lax, as in the polymer-extruded technical field for being fit to and known; So that the polymer chain of extrudate is alignd, and strengthen the physical characteristic of resulting material thus.
As mentioned above; The present invention can be applicable to carry or to be filtered into purpose and can be by the industrial textile of any kind of polymer element structure; Include but not limited to the textiles that the film through braiding spirality or scroll assembly, prefabricated textured yarn assembly and optionally otch and embossing constitutes; In every kind of situation, single-ply cloth is provided, or one or more exterior layers are provided in multi-ply construction.In addition; Manage the seam area of this type of textiles discontinuous reduced in the minimum situation through using the seam element that forms by the identical or very compatible polymer architecture of polymer with structure weaving body; Polymer element of the present invention is used for this type of seam element can especially have superiority providing on the physical characteristic of improvement, no matter is to industrial textile of the present invention or for non-the present invention but by electing the industrial textile that constitutes with the compatible polymer of the polymer of seam element as.This type of seam element should include, but is not limited to the spirality seam loop; And be designed to multiple structure that corresponding textiles edge is connected and links together; Particularly, as the seam lumen described among the WO 2010/121360 (Manninen) and as PCT/CA2010/001955 people such as () Manninen in the element of disclosed film formation.
Therefore the present invention manages to provide a kind of extruded type oriented thermoplastic polymer element that is used for industrial textile, and wherein this polymer element is constructed by the material that is selected from thread material, fibrous material and film, and comprises
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of following composition: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein this dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
The present invention also manages to provide a kind of industrial textile, and it comprises at least one extruded type oriented thermoplastic polymer element, and wherein each polymer element is made up of the material that is selected from thread material, fibrous material and film and comprises at least one polymer element
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of following composition: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein this dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
The present invention also explores provides a kind of industrial textile, and it comprises HEAT SETTING machine direction (MD) and crosscut machine direction (CD) element, and wherein at least 25% of this CD element is extruded type oriented thermoplastic polymer element, and each polymer element comprises
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of following composition: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein this dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
The present invention also manages to provide a kind of industrial textile, and it comprises HEAT SETTING machine direction (MD) and crosscut machine direction (CD) element, and wherein at least 25% of this MD element is extruded type oriented thermoplastic polymer element, and each polymer element comprises
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of following composition: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein this dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
In polymer element of the present invention and industrial textile; Preferably; This thermoplastic polymer is selected from the group of following composition: the mixture of PETG (PET), polybutylene terephthalate (PBT) (PBT), polytrimethylene terephthalate (PTT), PEN (PEN), PET and thermoplastic polyurethane, polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), 1,4 cyclohexanedimethanol-terephthalic acid (TPA)-be total to-M-phthalic acid (PCTA).
Perhaps, this at least a dry lubricant is selected from the group of following composition: tungsten disulfide (WS 2), boron nitride (BN) and soft metal, and this thermoplastic polymer comprises at least a polyamide.Preferably, this polyamide is selected from following at least a:
PA-6: polycaprolactam or nylon-6 or polyamide-6
PA-6/6: polyhexamethylene adipamide or nylon 6/6 or polyamide-6/6
PA-6/10: polyhexamethylene sebacamide or nylon-6/10 or polyamide-6/10
PA-11: gather (11-ammonia is for hendecanoic acid) or nylon-11 or polyamide-11
PA-6/12: nylon 612 or nylon-6/12 or polyamide-6/12
PA-10: be also referred to as nylon-10 or polyamide-10
PA-12: be also referred to as PA-12 or polyamide-12
Polyphthalamide (PPA).
Preferably, this soft metal is selected from indium (In), plumbous (Pb), tin (Sn), bismuth (Bi), cadmium (Cd) and silver (Ag).
Preferably, this dry lubricant comprise gross weight between about 0.5% and about 7%pbw between polymer element, and more preferably, gross weight between about 1% and about 5%pbw between polymer element.
Preferably, the mean particle size of the particulate matter of this dry lubricant is between about 0.1 μ and 50 μ (1.0 * 10 -7M and about 5.0 * 10 -5M) in the scope between; More preferably, between about 0.5 μ and about 20 μ (5.0 * 10 -7M and about 2.0 * 10 -5M) in the scope between.
This polymer element can be any suitable form, and it depends on preset final use, comprises the film that contains at least one layer; The fibrous material that can comprise short fiber material; And thread material, it has the structure that is selected from monofilament yarn, multifilament yarn, spun yarn, cable and sheath yarn.
In one embodiment, polymer element of the present invention can be by thread material or film configuration with as the seam element, and these seam elements can be used for industrial textile or polytype (industrial textile particularly of the present invention) seam.
Industrial textile of the present invention can comprise the braided structure that contains warp thread and weft yarn, or contains the non-braided structure of MD and CD yarn.Perhaps, they can comprise one or more thin layers; Or non-braided structure, wherein at least one polymer element comprises the loop yarns of a plurality of spirality interconnection.In addition, industrial textile of the present invention can comprise the seam element that is configured to according to polymer of the present invention.
Industrial textile of the present invention can be constructed and be arranged to industrial filtration fabrics or carried fabric, and especially in the workshop section that is selected from shaping workshop section, squeezing section and dry workshop section in the paper machine.For in paper machine, using, these fabrics can be forming fabric, press fabric, dry fabric (passing through dry fabric in particular for wind).
At polymer element is in the situation of polyester, and preferably, this polyester has at least 0.7 intrinsic viscosity; This is to use and is selected from phenol and (1; 1,2,2)-mixture of the 60:40pbw mixture of tetrachloroethanes and the 50:50pbw mixture of trifluoroacetic acid and carrene confirms.
The accompanying drawing summary
Referring now to accompanying drawing the present invention is described, wherein
Fig. 1 illustrates monofilament that instruction according to the present invention processes and curve map according to three other monofilament dry friction testing result relatively of prior art;
Fig. 2 be illustrate monofilament according to instruction of the present invention preparation under the dry test strips part with the curve map that loses according to two other monofilament percentage strength-retention relatively of prior art;
Fig. 3 illustrates according to the monofilament of instruction of the present invention preparation and curve map according to other monofilament dry friction testing result relatively of prior art; And
Fig. 4 provides the curve map according to the comparing data of three monofilament of instruction preparation of the present invention and two other monofilament wet friction tests relatively.
Detailed description of the drawings
At first with reference to figure 1; This is the curve map of the value of the power that shows that the distance of the monofilament traverse measurement that will contact with the solid friction pin is required; This test is according to ASTM D 3108-95, and title is the capstan friction method of testing of describing in " standard method of test of coefficient of friction, yarn is to solid material ".The indication of X axle is with the distance of inch instrumentation amount, and the indication of Y axle is with the power of pound (1b.) instrumentation amount.
In Fig. 1, oblatio is according to the result of four monofilament (being designated A, B, C, D) of method of testing test.Monofilament A is the directed monofilament that 0.40mm diameter circular cross section melt extrudes, and it is made up of PET, and this PET has also comprised dry lubricant, the molybdenum bisuphide that is evenly distributed in the 5%pbw (weight portion) on the monofilament with particle form.This molybdenum bisuphide particle has the mean particle size of about 6 μ, and (Hammonton NJ08037) provides for Polyvel, Inc.of 100 Ninth Street by Polyvel Co., Ltd of manufacturer.Monofilament A is prepared in accordance with the present invention, and has about 0.75 intrinsic viscosity (IV).
Relatively monofilament B, C and D adopt the mode similar with the preparation of monofilament A to prepare, but do not comprise any dry lubricant that is dispersed in the polymer melt.Monofilament B does not contain dry lubricant, but other aspects are basic similar with monofilament A, and wherein it is the monofilament of 0.40mm diameter circular cross section, and (PET) forms by same polyester, and is made for and has about 0.75 intrinsic viscosity.Monofilament C comprises the known lubricants of non-dry lubricant, and other aspects are also basic similar with monofilament A.Monofilament D is basic similar with monofilament B, has low IV (less than 0.7) but be made for.After their preparations; Test monofilament A, B, C and D then so as with ASTM D 3108-95 in confirm in the similar standard testing of the test described and relatively move their required power; This test is made amendment by the test of describing among the ASTM D 3108-95, and being merely provides constant and uniform pulling force to monofilament.
At the revision of the ASTM D 3108-95 test that is used for obtaining result shown in Figure 1, the adjustable input pulling force that before the friction pin, puts on monofilament is replaced by the pouring weight of 50g, according to finding that it is suitable for the line of this size.In this test, at first suspend the pouring weight of 50g in midair from an end of yarn; Then with yarn around the winding angle coiling yarn of capstan friction pin with 450 °.The other end with yarn is attached to constant speed stretching (CRE) type tension tester of being furnished with suitable dynamometer then.Then monofilament is spurred known distance, and measure the value (in pound) that moves the required power of this distance.Each monofilament is exposed to (pouring weight that applies, winding angle, friction pin) under the identical test condition, and uses identical materials retest under the same conditions repeatedly, so that obtain statistically evident result.
Illustrated result illustrates and drags the required mean force of monofilament A of the present invention through equipment and on average be about 0.301b among Fig. 1; And under identical test condition; Drag the required Li Genggao of monofilament B, C and D of prior art through identical device, and scope is from the about 1.31b corresponding to about 1.71b of monofilament B and C monofilament D of minimum IV to the monofilament of testing corresponding to having.Therefore; The data of Fig. 1 oblatio illustrate the monofilament of instructing preparation according to the present invention; Than the comparable monofilament that does not comprise a certain proportion of dry lubricant; It is less far away to drag the power that needs through known distance around common capstan friction pin by the standard winding angle, and therefore has lower coefficient of friction far away.
Can use following formula to confirm coefficient of friction (μ):
Figure BDA00001977847000141
In the equation above, T After wrapBe to drag the required mean force of monofilament (that is, Y axle value among Fig. 1), and T Before wrapIt is the 50g pouring weight that before its winding angle by 450 ° (it is corresponding to 7.854 radians) is reeled the friction capstan winch, suspends in midair from monofilament.After wrap: behind the coiling; Before wrap: before the coiling
Next with reference to figure 2; This be monofilament (A) according to instruction of the present invention preparation under the dry test strips part with the curve map that loses according to two similar monofilament (E and F) percentage strength-retention relatively of prior art, these two similar monofilament (E and F) do not comprise dry lubricant.
In this test, the TENSILE STRENGTH of at first using suitable equipment and method of testing to confirm multiple monofilament sample.For example, the CRE testing equipment, powerful like the Instron that can buy from Instron Worldwide of Norwood company (MA) Test machine(Instron Tensile Testing machine) is fit to; Other strength test equipment also possibly be gratifying.Can use the standardization program of describing as among the ASTM D2256 " standard method of test of the stretching attribute of single line method ".Any suitable method of testing all can be selected, and condition is that each sample uses program identical with every other sample and testing equipment test, so that the result who obtains can directly compare, and the reliable determination of the ultimate tensile strength of this line is provided.
After before test, measuring yarn tensile strength, each monofilament sample of known length is fixedly attached to an end of so-called " mouse cage " wear-resisting testing equipment.In test, sample is dangled on rotatable flute profile pottery wheel; The other end of sample is attached to known pouring weight, just contacts so that sample is parked with the pottery wheel.Then make the monofilament sample park with the power of pottery wheel contact with is connected each sample and applies under the identical load, take turns with the constant speed rotary ceramic, and write down number of revolutions (number of turns).Regular intervals by 100,000 circles removes these monofilament samples from testing equipment, and use to confirm the TENSILE STRENGTH that identical testing equipment that its initial ultimate tensile strength is adopted and method remeasure each sample.With each blanking time the place each sample TENSILE STRENGTH and its test down the initial tensile strength before the abrasion relatively and relatively the result is plotted as the function (stretch and lose (%)) of loss of tensile strength with the number of turns that sample bears.
In the illustrated data of Fig. 2, monofilament A is the directed monofilament that 0.35mm diameter circular cross section of the present invention melt extrudes, and it is made up of PET, and comprises dry lubricant, the molybdenum bisuphide that is evenly distributed in 1.7% pbw on the monofilament with particle form.Tungsten disulfide be from M.K.IMPEX company (M.K.IMPEX Canada, 6382 Lisgar Drive, Mississauga, Ontario L5N 6X1 Canada) buys to do particle form, and the scope that granular size such as supplier provide is from about 0.1 to 6.0 micron.In order to prepare monofilament A, before monofilament is extruded, mix tungsten disulfide and PET pellet are dried equably; Put into practice the extruded monofilament sample according to standard industry then.
Monofilament E is with US 5,502, the monofilament of the 0.35mm diameter that the mode of describing among 120 people such as () Bhatt prepares, and its mixture by about 60% PET and 40% thermoplastic polyurethane is formed, and does not comprise any dry lubricant.Monofilament F be use in making like industrial textile and according to US 6,828, the 0.35mm diameter polymer filament of 681 instruction preparation.Monofilament F is made up of the mixture of about 95% pbw polyamide 6/10 and 5% pbw polyamide 11, and does not comprise any dry lubricant.
Shown in the curve map of Fig. 2, the monofilament A that is made up of PET and 1.7% pbw tungsten disulfide particle loses the initial tensile strength less than 10% after on testing equipment, bearing 600,000 rotating cycles.Relatively, after bearing 600,000 circles, the monofilament E that is made up of the mixture of PET and thermoplastic polyurethane loses about 30% initial tensile strength, and polyamide sample monofilament F loses about 87% initial tensile strength.
Therefore; Illustrated test data illustrates among Fig. 2; The polymer filament of dry lubricant that comprises about 1.7% pbw is more wear-resisting than the comparable monofilament that does not comprise dry lubricant, and its remaining percentage TENSILE STRENGTH is measured after the effect of long-time dry grinding consumption as bearing, and is tungsten disulfide in this example.
With reference now to Fig. 3,, this is to illustrate according to the monofilament (A) of instruction preparation of the present invention and second monofilament (B) that does not contain dry lubricant friction testing result's relatively curve map.This test is to carry out according to the method that combines Fig. 1 to describe.In this example, monofilament A is the circular cross section monofilament of 0.35mm diameter, and it is made up of PET, and is extruding the dried equably tungsten disulfide particle that mixes 1.7% pbw before, and this tungsten disulfide particle has the granular size of scope between 0.1 and 6 micron.Monofilament B does not contain any dry lubricant, but other aspects are basic and monofilament A is identical, also are the circular cross section PET monofilament of 0.35mm diameter.The intrinsic viscosity of the polyester of monofilament A and B is identical.
Two kinds of monofilament all are to test for the revision of " standard method of test of the coefficient of friction of yarn and solid material " according to method of testing ASTM D 3108-95 title mentioned above.Two kinds of monofilament all use identical 50g counterweight and drag about 9 inches distance around the winding angle of friction capstan winch by 450 °; The CRE type stretching testing machine measurement that use is furnished with suitable dynamometer drags the required power of monofilament around the friction capstan winch.Shown in curve map, measure constantly around capstan winch and drag the required power of monofilament.
The data of Fig. 3 oblatio illustrate; The monofilament polyester that comprises dry lubricant (be the tungsten disulfide particle of 1.7%pbw definite, its magnitude range is between about 0.1 and 6 micron) according to the present invention only needs little a lot of power to move through measuring distance than the comparable monofilament that does not contain any dry lubricant.
With reference now to Fig. 4; This is the curve map of the value of the power that shows that the distance of the monofilament traverse measurement that will contact with the solid friction pin is required; This test is according to ASTM D 3108-95, and title is the capstan friction method of testing of describing in " standard method of test of coefficient of friction, yarn is to solid material ".In this example, this test wherein all is immersed in yarn and capstan friction pin in the water bath by the modification of describing among the ASTM D 3108-95.The purpose of this test be to measure when being exposed in the water monofilament dragged the required power of required separation distance and also measure any monofilament in this condition, show with other conditions in whether different.
In Fig. 4, oblatio is tested the result of five monofilament that are designated G, H, I, J and K according to the wet friction method of testing of revising.Except in polymer melt, adding the dry lubricant, all five monofilament are similar basically, and each melt extrudes each monofilament by spherical PPS (polyphenylene sulfide) resin with the similar manner that combines PET to extrude description with preceding text; Extrude all monofilament so that rectangular cross section is provided, measure 0.60mm width * 0.30mm height.Each monofilament is as follows with respect to the composition of dry lubrication additive:
Monofilament G:2.0%pbw tungsten disulfide
Monofilament H:1.1%pbw tungsten disulfide
Monofilament I:1.0%pbw molybdenum bisuphide
Monofilament J:0.0%pbw dry lubricant
Monofilament K:0.0%pbw dry lubricant+1%pbw colorant
In the monofilament sample of Fig. 4, sample G and H comprise respectively 2% with the tungsten disulfide of 1.1%pbw.Tungsten disulfide is from (the M.K.IMPEX Canada of M.K.IMPEX company; 6382 Lisgar Drive, Mississauga, Ontario L5N 6X1; Canada) obtain to do particle form, and the scope that granular size such as supplier provide is between about 0.1 to 6.0 micron.Tungsten disulfide adds with dry powder form, and makes up with spherical PPS.The PPS that has mixed dry lubricant is Fortran PPS, and it is the linear PPS of high temperature, buys from Ticona engineering polymers company (Ticona Engineering Polymers, the service unit of Celanese Corp. of Dallas, Texas).Then mixed uniformly fluoropolymer resin ball is melt extruded together with dry lubricant, and be stretched as the rectangular cross section monofilament.
Sample I substitutes tungsten disulfide to prepare with sample G and the identical mode of H except using 1% pbw molybdenum bisuphide dry lubricant.This molybdenum bisuphide has about 6 microns mean particle size.Molybdenum bisuphide is provided by Polyvel Co., Ltd of manufacturer (Hammonton, NJ 08037 for Polyvel, Inc.of 100 Ninth Street).
Monofilament J is made for monofilament G, H and I identically, but does not contain any dry lubrication additive; And monofilament K also processes in a similar manner, do not contain dry lubricant, but the commerce of 1% pbw can be buied colorant adds polymer melt to.
Revision in the ASTM D 3108-95 test that is used for obtaining result shown in Figure 4 for comprising water bath, wherein is immersed in apparatus modifications in the water bath with capstan friction pin and yarn thus.These layout others are in fact with to be used in combination the layout that the method for testing of the data that obtain Fig. 1 describes identical among Fig. 1.Each yarn is attached to an end of 50g pouring weight, and the other end is attached to the CRE type stretching testing machine of being furnished with suitable dynamometer.Then under water, with yarn around the winding angle coiling yarn of capstan friction pin with 450 °.Then monofilament is spurred known distance, and measure the value (in pound) that moves the required power of this distance.Each monofilament is exposed to (pouring weight that applies, winding angle, friction pin) under the identical test condition, and uses identical materials retest under the same conditions repeatedly, goes up reliable and significant result so that obtain statistics.
The illustrated result of Fig. 4 illustrates, and drag the required mean force of monofilament G of the present invention, H and I through equipment and on average be about 0.401b, and monofilament J that drags prior art and the required big at least twice of power of monofilament K that comprises colorant is about 0.80lb.Therefore; The data of Fig. 4 oblatio illustrate; The monofilament of instructing the mixture by PPS and dry lubricant of preparation to form according to the present invention; Than the comparable monofilament that does not comprise dry lubricant, it is less far away to drag the power that needs through known distance around common capstan friction pin by the standard winding angle when being immersed in waterpower, and therefore has lower coefficient of friction far away.
Therefore; The Test Information of oblatio illustrates among Fig. 1 to Fig. 4; Than the comparable monofilament that does not contain the dry lubricant (like molybdenum bisuphide or tungsten disulfide) of scope from about amount of 1.1% to 5%pbw; Instruct the monofilament of preparation to have lower coefficient of friction (as represented) according to the present invention, and show bigger ABRASION RESISTANCE (measuring) as percentage strength loss after bearing dry grinding consumption condition with the value that they is moved the required power of known distance according to standard method of test.Perhaps, As mentioned above, can expect that many other dry lubricants will provide similar result in the monofilament of instructing preparation according to the present invention and film, for example boron nitride or soft metal (as indium, lead, tin, bismuth, cadmium or silver wherein one or more).
According to known and routine techniques, can yarn of the present invention (be configured to monofilament, multifibres or other) be woven or be arranged to industrial textile (particularly papermaking fabric).Can use this fabric of conventional equipment braiding, or can assemble them by a plurality of array of yarns according to the method for other descriptions (referring to for example, US 6491794 (Davenport) and WO05/056920 (Eagles)).Selected knitting structure or yarn arrangement will depend on the target final use that fabric is preset.
In the situation that polymer element of the present invention (like monofilament) provides as yarn, can find that they are especially satisfactory and effective when combining not contain other polymer yarn combinations of materials uses of dry lubricant.For example, form the situation of the CD element on the MS that is arranged in fabric, can in the structure of braiding, use thread material of the present invention at them.In this type of situation, they can comprise from few to 25% at the most to 100% MS CD yarn.Thread material of the present invention can also be used as at least a portion of the MD element of textiles, or on the wearing course of textiles, is used as nearly 100% MD element.Alternative as another, can assemble whole fabric by monofilament according to the present invention.
After braiding or other fabric assembling procedures, according to routine techniques with the textiles HEAT SETTING of thread material structure so that fabric construction is stable.Heat set conditions will be different along with selected polymer, thread material, its size and braided structure, but be usually included in it is installed in the HEAT SETTING frame when (as to this purpose commonly used), under stretching, be heated.
In the situation that polymer unit provides as film, as mentioned above, it can be as the one or more exterior layers in homogeneous strata or the multi-layered textile article.Particularly, industrial textile of the present invention can be advantageously provides as the film of one or more layers of otch and processing profiles, like what describe among the PCT/CA2010/001956 (Manninen).
Moreover As mentioned above, polymer element of the present invention can be through mixing dry lubricant in the polymer of constructing seam element (like spiral coil, seam lumen or film) to be used for polytype seam element of industrial textile.
As discussed above, dry lubricant is used to improve the ABRASION RESISTANCE of polymer element, reduces final yarns simultaneously and the coefficient of friction of the textiles processed thus.Except these advantages; The present invention also provides this ability to come based on the physical characteristic (comprising moisture content stability and DIMENSIONAL STABILITY) that the material of polyester is superior to the polyamide monofilament of prior art with utilization, because PE yarn can not expand or shrink after the drying and watering cycle of water and air.The ABRASION RESISTANCE of the raising of discussing except this paper and the coefficient of friction of reduction; The physics of polymer element of the present invention and chemical characteristic basically with incorporate known industrial textile in polymer element similar; Therefore, minimizing need or need not to revise any problem that fabric construction adapts to the use of polymer element of the present invention.Particularly, now maybe be fully by based on the made fabric of polyester simultaneously than comprising the yarn of part based on the prior art of the material of polyamide, reduce total coefficient of friction of fabric and improve its ABRASION RESISTANCE.

Claims (43)

1. extruded type oriented thermoplastic polymer element that in industrial textile, uses, wherein
Said polymer element is made up of the material that is selected from thread material, fibrous material and film and comprises
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of following composition: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein said dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
2. polymer element according to claim 1; Wherein said thermoplastic polymer is selected from the set of following composition: PETG (PET), polybutylene terephthalate (PBT) (PBT), polytrimethylene terephthalate (PTT), PEN (PEN), PET and thermoplastic polyurethane, polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), 1,4 cyclohexanedimethanol-terephthalic acid (TPA)-be total to-M-phthalic acid (PCTA).
3. polymer element according to claim 1, wherein said at least a dry lubricant is selected from the group of following composition: tungsten disulfide (WS 2), boron nitride (BN) and soft metal, and said thermoplastic polymer comprises at least a polyamide.
4. polymer element according to claim 3, wherein said at least a polyamide is selected from least a of PA-6, PA-6/6, PA-6/10, PA-6/12, PA-11, PA-10, PA-12 and polyphthalamide (PPA).
5. according to each described polymer element in the claim 1 to 4, wherein said soft metal is selected from indium (In), plumbous (Pb), tin (Sn), bismuth (Bi), cadmium (Cd) and silver (Ag).
6. according to each described polymer element in the claim 1 to 5, wherein said dry lubricant comprise said polymer element gross weight between about 0.5% and about 7%pbw between.
7. polymer element according to claim 6, wherein said dry lubricant comprise said polymer element gross weight between about 1% and about 5%pbw between.
8. according to each described polymer element in the claim 1 to 7, the mean particle size of the particulate matter of wherein said dry lubricant is between about 0.1 μ and 50 μ (1.0 * 10 -7M and about 5.0 * 10 -5M) in the scope between
9. polymer element according to claim 8, the mean particle size of the particulate matter of wherein said dry lubricant is between about 0.5 μ and 20 μ (5.0 * 10 -7M and about 2.0 * 10 -5M) in the scope between.
10. according to each described polymer element in the claim 1 to 9, wherein said polymer element comprises the film that contains at least one layer.
11. according to each described polymer element in the claim 1 to 9, wherein said polymer element comprises fibrous material.
12. polymer element according to claim 11, wherein said fibrous material comprises short fiber material.
13. according to each described polymer element in the claim 1 to 9, wherein said polymer element comprises thread material, said thread material has the structure that is selected from monofilament yarn, multifilament yarn, spun yarn, cable and sheath yarn.
14. according to each described polymer element in the claim 1 to 9, wherein said polymer element comprises the material that is selected from thread material and film, and is the seam element.
15. an industrial textile, it comprises at least one extruded type oriented thermoplastic polymer element, and each polymer element of wherein said at least one polymer element is made up of the material that is selected from thread material, fibrous material and film and comprises
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of following composition: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein said dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
16. the industrial textile of braiding according to claim 14; Wherein said thermoplastic polymer is selected from the group of following composition: PETG (PET), polybutylene terephthalate (PBT) (PBT), polytrimethylene terephthalate (PTT), PEN (PEN), PET and thermoplastic polyurethane, polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), 1,4 cyclohexanedimethanol-terephthalic acid (TPA)-be total to-M-phthalic acid (PCTA).
17. the industrial textile of braiding according to claim 15, wherein said at least a dry lubricant is selected from the group of following composition: tungsten disulfide (WS 2), boron nitride (BN) and soft metal, and said thermoplastic polymer comprises at least a polyamide.
18. the industrial textile of braiding according to claim 17, wherein said at least a polyamide are selected from PA-6, PA-6/6, PA-6/10, PA-6/12, PA-11, PA-10, PA-12 and polyphthalamide (PPA) at least a of polyphenylene sulfide (PPS).
19. according to each described industrial textile in the claim 15 to 18, wherein said soft metal is selected from indium (In), plumbous (Pb), tin (Sn), bismuth (Bi), cadmium (Cd) and silver (Ag).
20. according to each described industrial textile in the claim 15 to 19, wherein said dry lubricant comprise said polymer element gross weight between about 0.5% and about 7%pbw between.
21. the industrial textile of braiding according to claim 20, wherein said dry lubricant comprise said polymer element gross weight between about 1% and about 5%pbw between.
22. according to each described industrial textile in the claim 15 to 21, the mean particle size of the particulate matter of wherein said dry lubricant is between about 0.1 μ and 50 μ (1.0 * 10 -7M and about 5.0 * 10 -5M) in the scope between;
23. the industrial textile of braiding according to claim 22, the mean particle size of the particulate matter of wherein said dry lubricant is between about 0.5 μ and 20 μ (5.0 * 10 -7M and about 2.0 * 10 -5M) in the scope between.
24. according to each described industrial textile in the claim 15 to 23, wherein said at least one polymer element is a film, and said industrial textile comprises the said film of at least one layer.
25. according to each described industrial textile in the claim 15 to 23, wherein said at least one polymer element comprises fibrous material.
26. the industrial textile of braiding according to claim 25, wherein said fibrous material comprises short fiber material.
27. according to each described industrial textile in the claim 15 to 23, wherein said at least one polymer element comprises a plurality of yarns, said thread material respectively has the structure that is selected from monofilament yarn, multifilament yarn, spun yarn, cable and sheath yarn.
28. the industrial textile of braiding according to claim 27, wherein said textiles comprises the braided structure that contains warp thread and weft yarn.
29. the industrial textile of braiding according to claim 27, wherein said textiles comprise the non-braided structure that contains MD and CD yarn.
30. according to each described industrial textile in the claim 15 to 23, wherein said textiles comprises non-braided structure, and said at least one polymer element comprises the loop yarns of a plurality of spirality interconnection.
31., also comprise seam element according to claim 14 according to each described industrial textile in the claim 15 to 27.
32. an industrial textile, it comprises HEAT SETTING machine direction (MD) and crosscut machine direction (CD) element, and at least 25% of wherein said CD element is an extruded type oriented thermoplastic polymer element, and each polymer element comprises
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of being made up of following: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein
Said dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
33. an industrial textile, it comprises HEAT SETTING machine direction (MD) and crosscut machine direction (CD) element, and at least 25% of wherein said MD element is an extruded type oriented thermoplastic polymer element, and each polymer element comprises
(i) thermoplastic polymer; And
(ii) at least a dry lubricant, it is selected from the group of following composition: molybdenum bisuphide (MoS 2), tungsten disulfide (WS 2), boron nitride (BN) and soft metal, wherein said dry lubricant comprises mean particle size between 0.05 μ and about 100 μ (5.0 * 10 -8M and about 1.0 * 10 -4M) particulate matter in the scope, and based on the gross weight of polymer element, with between about 0.1% and about 10% weight portion (pbw) between amount be present in this polymer element.
34. according to claim 32 or the described industrial textile of claim 33, wherein said soft metal is selected from indium (In), plumbous (Pb), tin (Sn), bismuth (Bi), cadmium (Cd) and silver (Ag).
35. according to each described industrial textile in the claim 15 to 34, its structure also is arranged as as industrial filtration fabrics.
36. according to each described industrial textile in the claim 15 to 34, its structure also is arranged as as carrying fabric.
37. according to each described industrial textile in the claim 15 to 36, its structure and being arranged as in the workshop section that is selected from shaping workshop section, squeezing section and dry workshop section in paper machine uses.
38. according to the industrial textile of the described braiding of claim 37, wherein said fabric is a forming fabric.
39. according to the industrial textile of the described braiding of claim 37, wherein said fabric is a press fabric.
40. according to the industrial textile of the described braiding of claim 37, wherein said fabric is a dry fabric.
41. according to the industrial textile of the described braiding of claim 37, wherein said fabric is ventilative dry fabric.
42. according to each described polymer element in the claim 1 to 13; Wherein said polymer element is a polyester; It has at least 0.7 intrinsic viscosity, and said intrinsic viscosity is to use and is selected from phenol and (1,1; 2,2)-mixture of the 60:40pbw mixture of tetrachloroethanes and the 50:50pbw mixture of trifluoroacetic acid and carrene confirms.
43. according to each described industrial textile in the claim 15 to 41; Wherein said polymer element is a polyester; It has at least 0.7 intrinsic viscosity, and said intrinsic viscosity is to use and is selected from phenol and (1,1; 2,2)-mixture of the 60:40pbw mixture of tetrachloroethanes and the 50:50pbw mixture of trifluoroacetic acid and carrene confirms.
CN2011800084891A 2010-03-09 2011-03-02 Thermoplastic polymer yarns and films including dry lubricants and industrial textiles made therefrom Pending CN102753740A (en)

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CA2696648A CA2696648A1 (en) 2010-03-09 2010-03-09 Polyester monofilaments including molybdenum disulphide and industrial textiles made therefrom
CA2,696,648 2010-03-09
PCT/CA2011/000236 WO2011109890A1 (en) 2010-03-09 2011-03-02 Thermoplastic polymer yarns and films including dry lubricants and industrial textiles made therefrom

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CN103526322A (en) * 2013-09-26 2014-01-22 江苏立新化纤科技有限公司 Fluorine-containing PET (polyethylene terephthalate)-PTT (polytrimethylene terephthalate) copolyester FDY (fully drawn yarn) fiber and preparation method thereof
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