WO2002048436A1 - Fibre en polyethylene haute resistance - Google Patents
Fibre en polyethylene haute resistance Download PDFInfo
- Publication number
- WO2002048436A1 WO2002048436A1 PCT/JP2001/010754 JP0110754W WO0248436A1 WO 2002048436 A1 WO2002048436 A1 WO 2002048436A1 JP 0110754 W JP0110754 W JP 0110754W WO 0248436 A1 WO0248436 A1 WO 0248436A1
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- WIPO (PCT)
- Prior art keywords
- molecular weight
- fiber
- average molecular
- strength
- less
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 159
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 60
- -1 polyethylene Polymers 0.000 title claims abstract description 60
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 60
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 239000013078 crystal Substances 0.000 claims description 18
- 238000000235 small-angle X-ray scattering Methods 0.000 claims description 17
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 241001327708 Coriaria sarmentosa Species 0.000 claims 1
- CCAZWUJBLXKBAY-ULZPOIKGSA-N Tutin Chemical compound C([C@]12[C@@H]3O[C@@H]3[C@@]3(O)[C@H]4C(=O)O[C@@H]([C@H]([C@]32C)O)[C@H]4C(=C)C)O1 CCAZWUJBLXKBAY-ULZPOIKGSA-N 0.000 claims 1
- 230000000704 physical effect Effects 0.000 description 25
- 238000000034 method Methods 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 14
- 238000009987 spinning Methods 0.000 description 13
- 238000001891 gel spinning Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 8
- 229920001903 high density polyethylene Polymers 0.000 description 8
- 239000004700 high-density polyethylene Substances 0.000 description 8
- 238000002074 melt spinning Methods 0.000 description 8
- 230000004927 fusion Effects 0.000 description 7
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 5
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920001410 Microfiber Polymers 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 238000001464 small-angle X-ray scattering data Methods 0.000 description 2
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 238000000333 X-ray scattering Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000012968 metallocene catalyst Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—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
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
- D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/201—Polyolefins
- D07B2205/2014—High performance polyolefins, e.g. Dyneema or Spectra
-
- 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
-
- 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
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/2964—Artificial fiber or filament
- Y10T428/2967—Synthetic resin or polymer
Definitions
- the present invention relates to various types of high performance textiles, tag ropes, mooring ropes, yacht ropes, construction ropes, etc., such as various sports clothing, bulletproof, protective clothing, protective gloves and various safety articles.
- Various braid products such as rope products, fishing lines, blind cables, net products such as fishing nets and ball nets, as well as chemical filters, battery separators, and reinforcing materials for various nonwoven fabrics Or curtain materials such as tents, or hell.
- industries such as for sports such as met-ski skis, for composites such as speaker cones and pre-pleders, or for reinforcing fibers such as concrete, mortar, etc. It relates to a possible new high-strength polyethylene fiber. Background technology
- high-strength polyethylene fibers for example, as disclosed in Japanese Patent Publication No. 60-47922, ultra-high molecular weight polyethylene is used as a raw material. It is known that the “gel spinning method” can provide unprecedented high-strength and high-modulus fibers, and is already widely used in industry. These high-strength polyethylene fibers have the advantage of high strength and high elastic modulus, but on the other hand, the high elastic modulus of the fiber may cause troubles in various applications due to disaster. I have. For example, when a high-strength polyethylene fiber is used as a normal fabric, the texture is very hard and extremely unsuitable from the viewpoint of comfort.
- 3,349,334 discloses a unit manufactured by stretching a high-molecular-weight polyethylene having a weight-average molecular weight of 600,000-1,500,000.
- a high-strength polyethylene fiber having a fiber fineness of 16.7 dtex or less is disclosed, but the single fiber fineness reached by the patent is at most 2.4 dtex, which is obtained by the present invention.
- Such high-strength polyethylene fibers with a dtex of 1.5 dtex or less have not been obtained.
- a high-strength polyethylene fiber produced by melt spinning is disclosed, for example, in US Pat. According to the patent, a high-strength polyethylene fiber having a strength of 17.1 c NZ dtex and a modulus of 754 c NZ dtex is disclosed, but the single fiber fineness of the fiber is at most 2.0. dte X. As described above, in melt spinning, a high-strength poly such as 1.5 dte X or less is used. No ethylene fiber has been obtained.
- the tensile strength is at most about 10 NZ dtex even in a high-performance product.
- high-strength polyethylene fibers exceeding 15 cN / dtex are not manufactured and sold.
- the most effective means of responding to these wide-ranging demands is to reduce single fiber fineness while maintaining fiber strength.
- the single-fiber fineness of high-strength polyethylene fibers that can be obtained by melt-spinning and exceeds 15.5 Oc NZ dtex is usually 2.0 to 5.0 dtex.
- 1.5 dtex or less is the highest. 1.
- Low-density yarn at the level of O dtex can be obtained very instantaneously. However, it is practically impossible to obtain them with sufficient productivity that can be carried out industrially, and even if it is possible, the physical properties of the fibers will be significantly reduced, and the fibers will not be practically usable. It was not something that could be done.
- the inventors presume the reason for this as follows.
- the melt spinning since the molecular chains in the polymer are very entangled with each other, the polymer cannot be sufficiently stretched after being extruded from the nozzle and pulled off. And the like.
- ultra-high molecular weight polyethylene with a molecular weight of over 1,000,000
- the spinning / drawing tension is increased and a solvent is used during spinning.
- the fiber is drawn at a temperature higher than the melting point of the fiber or the fiber, fusion occurs to the fiber, and it is not possible to obtain a desired uniform fineness yarn.
- the fused fiber becomes a defect, and the physical properties of the nonwoven fabric are reduced.
- the present inventors have succeeded in obtaining very low-fineness and high-strength polyethylene fibers, which have been difficult to obtain by such conventional techniques as gel spinning and melt spinning, and have reached the present invention.
- the high-strength polyethylene fiber has a disadvantage that it is weak to compressive stress because it is highly crystallized, while having the advantage of high strength and high elastic modulus.
- a tensile stress in the direction of the fiber axis is very strong, but on the contrary a compressive stress is applied, there is a problem that the fracture is caused by an extremely low compressive stress.
- the first object of the present invention is that the single fiber fineness is 1.5 dt. ex or less, with a tensile strength of 15 cN / dtex or more and a tensile modulus of 300 c NZ dtex, which is a cut fiber
- An object of the present invention is to provide a high-strength polyethylene fiber characterized in that the proportion of poorly dispersed yarn is 2% or less.
- a second object of the present invention is to provide excellent compression characteristics and a tensile strength of 15 cN / dtex or more, which were difficult to obtain by conventional techniques such as melt spinning and gel spinning, and Provides high-strength polyethylene fiber with a fiber structure characteristic that a long-period structure of 100 A or less is observed in small-angle X-ray scattering measurement at a tensile elastic modulus of more than 300 cN / dtex. To do that. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a diagram showing a model structure analyzed from a small-angle X-ray scattering pattern based on the model of TsVAnkin and the like.
- the average fineness of the single fibers of the high-strength polyethylene fibers in the present invention is 1.5 dte X or less, and it is more preferable that the average fineness be 1. Odte X or less. It is less than 0.5 dte X. If it exceeds 1.5 dtex, the effect on lowering the fiber fineness is reduced.
- the advantage difference is smaller than that of existing ones having a single fiber size of 1.5 dteX or more. For example, it has been experimentally found that there is a critical point in the sensory evaluation of the softness of a cloth around 0.5 dtex with respect to the rigidity of the cloth. On the other hand, if it exceeds 1.5 dtex, the effect is not sufficient even in reducing the thickness of the nonwoven fabric.
- the fiber of the present invention has an extremely small average fineness.
- the fiber properties are low.
- high-strength polyethylene fibers with a single fiber fineness of 1.5 dtex or less, a tensile strength of 15 c NZ dtex, and a tensile modulus of more than 300 cN / dte X are gels. It could only be achieved using a complex technique such as spinning.
- the gel spinning method is used as described above, the spinning / drawing tension is increased to obtain ultrafine fibers, a solvent is used during spinning, and drawing is performed at a temperature higher than the melting point of the fibers.
- the high-strength polyethylene fiber of the present invention has a tensile strength of 15 cN / dtex or more, a tensile elastic modulus of 300 cN dteX or more, and small-angle X-ray scattering. It is characterized in that a long-period structure of 100 A or less is observed in the measurement.
- the present inventors have sought to determine what form the above-mentioned polyethylene fiber having a high strength and a structure capable of relaxing stress, which is a strong demand from the prior art, or what form it is.
- the highly ordered crystal in which the amorphous part or the intermediate state between the crystal and the amorphous state, that is, the part in which the electron density is lower than that of the crystal part, maintains the physical properties such as the strength and the like. This is a model that can improve the compression characteristics while And clarified.
- the inventors of the present invention have conducted intensive studies on the above problems and, as a result, have succeeded in obtaining a polyethylene fiber having a completely novel form.
- one of the characteristics reflecting the above morphological model is that a long-period structure of 100 A or less is observed in small-angle X-ray scattering measurement. Preferably it is less than or equal to 80 A, and even more preferably less than or equal to 60 A. In the absence of the long-period structure observed by small-angle X-rays, the amorphous structure or crystal that relieves stress in the fiber structure, or the intermediate state of amorphous, that is, the portion with a lower electron density than the crystalline portion ( It is not preferable because the part having low order of crystal) is lost.
- the long-period structure is larger than the threshold value (100 A) Therefore, such a fiber has a low tensile strength and elastic modulus, and does not satisfy required properties in terms of physical properties. Therefore, the crystals that make up the fibers must be in a highly crystallized and ordered state, but at the same time, it is essential that a small amount of a low-order part be incorporated inside the crystals. As a result of intensive studies, we found this. This fiber showed an interference point pattern in small-angle X-ray scattering, and was found to have a very unique structural feature that its long-period structure was less than 10 OA. The characteristics of such a fiber structure As will be described later, the small-angle X-ray scattering pattern can be quantitatively shown by analyzing it using the method of YAB UK I et al.
- Such a high-strength polyethylene fiber of the present invention has been extremely difficult to produce.
- the fiber in which a long-period structure of 100 A or less is observed in the small-angle X-ray scattering measurement has a very low strength and has not been used at a practical level.
- the inventors have worked diligently to adopt, for example, the manufacturing method described below, which has excellent compression characteristics and tensile strength of 15 cN / dtex despite high strength.
- the tensile elastic modulus was 300 cN / dtex or more, and the small-angle X-ray scattering measurement showed 100
- the method for producing the fiber according to the present invention requires a careful and novel production method.
- the following method is recommended, but is not limited thereto. That is, in the production of the fiber according to the present invention, it is desirable that the weight average molecular weight of the starting polyethylene is 60,000 to 600,000, The weight average molecular weight in the fiber state is 50,000 to 300,000, and the ratio (MwMn) of the weight average molecular weight to the number average molecular weight is 4.5 or less. Is desirable.
- it is important that the weight average molecular weight of the raw material polyethylene is 60,000 to 300,000, and the weight average molecular weight in the fiber state is 50,000.
- the ratio of the weight average molecular weight to the number average molecular weight (MwZM n) be 4.0 or less. More preferably, the weight average molecular weight of the starting polyethylene is from 60,000 to 200,000. It is important that the weight average molecular weight in the fiber state is 50,000 to 150,000, and the ratio of the weight average molecular weight to the number average molecular weight (MwZMn) Should be less than 3.0.
- the polyethylene in the present invention is characterized in that its repeating unit is practically ethylene, and a small amount of other monomers such as a one-year-old acrylic. It may be a copolymer of lylic acid and its derivatives, methacrylic acid and its derivatives, vinyl silane and its derivatives, and these copolymers or ethylene may be used.
- the copolymer may be a copolymer with a ren-only polymer, or a blend with a homopolymer such as another ⁇ -olefin.
- copolymers such as olefins such as propylene and pentene-11 and the addition of a certain amount of short-chain or long-chain branches is important in the production of the present fiber, especially in spinning.
- ⁇ It is preferable because it gives stability in the yarn production during drawing.
- the content other than ethylene is too high, it will be a drawback inhibiting factor, so from the viewpoint of obtaining high-strength and high-modulus fibers, 0.2 mol% in monomer units In the following, it is preferable that it is 0.1 m 0 1% or less. Of course, it may be a homopolymer of ethylene alone.
- the polymer may be deliberately degraded in the melt-extrusion process or the spinning process, or a narrow molecular weight distribution may be previously determined.
- polyethylene that has been polymerized using a metallocene catalyst.
- the weight-average molecular weight of the raw material polyethylene is less than 60,000, the melt-forming process is easy, but the molecular weight is low, so that the strength of the yarn actually obtained is low.
- the molecular weight of the raw material polyethylene is higher than 600,000, the melt viscosity becomes extremely high. Processing becomes extremely difficult.
- the ratio of the weight average molecular weight to the number average molecular weight in the fibrous state is 4.5 or more, the maximum draw ratio is lower than when a polymer having the same weight average molecular weight is used, and the strength of the obtained yarn. Will also be lower.
- the production method recommended in the spinning / drawing process is to produce high-strength polyethylene fibers with a proportion of poorly dispersed yarn of 2.0% or less when a cut fiber is used.
- the description is made separately for the case of producing high-strength polyethylene fiber in which a long-period structure of 100 A or less is observed in small-angle X-ray scattering measurement. Needless to say, both may be used selectively for production, or one fiber may be produced using the other spinning and drawing process.
- polyethylene is melted and extruded by an extruder, and is discharged quantitatively through a spinneret by a gear pump.
- the extruded yarn passes through a heat-retaining cylinder maintained at a constant temperature, is rapidly cooled, and then is taken off at a predetermined speed.
- the heat retaining section be higher than the crystal dispersion temperature of the fiber and lower than the melting point of the fiber. More desirably, the temperature should be lower by at least 10 degrees than the melting point of the fibers, and higher by at least 10 degrees than the crystal dispersion temperature of the fibers.
- Gas is usually used for quenching, but of course liquid may be used to increase cooling efficiency. It is desirable to use air for gas and water for liquid.
- the spun yarn is not wound up continuously
- the film may be stretched or stretched after being wound once.
- the filament shape extruded from the spinneret under the nozzle is kept at a temperature higher than the crystal dispersion temperature of the general fiber and lower than the melting point of the general fiber in the heat retaining section, and thereafter, It is important to cool immediately. This makes it possible to spin at a high spinning speed, to obtain an undrawn yarn that can be drawn to a low fineness, and even to increase the number of fibers even when the number of fibers increases. It is possible to prevent fusion.
- the above-mentioned polyethylene is extruded and melted by an extruder, and is discharged quantitatively via a spinneret by a gear pump. Thereafter, the filament is cooled with cold air, and is taken out at a predetermined speed. In this case, it is important to take off quickly enough. That is, it is important that the ratio between the discharge linear speed and the winding speed is 100 or more. Preferably, it is 150 or more, and more preferably, it is 200 or more. The ratio between the discharge line speed and the winding speed can be calculated from the die diameter, single hole discharge amount, polymer density, and winding speed.
- the spun filaments may be stretched continuously without winding, or may be stretched after winding once.
- the stretching operation is performed by several godet rolls.
- the number of god rollers can be increased as needed.
- Each godet roll can be set to any temperature.
- a slit heater whose temperature and length can be adjusted can be arbitrarily installed between each godet roll.
- the draw ratio (DR 1) of the first step is 1.5 to 5.0 times, and preferably 2.0 to 3.0 times.
- Neck stretching is performed between the second and third godet rolls. What is important here is the third and fourth godet rolls immediately after the neck stretch.
- the tensile strength and the elastic modulus in the present invention were measured using a sample made of Orientitech's “Tensilon” with a sample length of 200 mm (length between chucks) and an elongation speed of 100% Z min. Measure the strain-stress curve under the conditions of 20 ° C in the atmosphere temperature and 65% RH. The stress at the break point of the curve is the strength (c NZ dtex), the maximum gradient near the origin of the curve. The elastic modulus (c NZ dtex) was calculated from the tangent to give the value. The average value of 10 measurements was used for each value.
- the weight average molecular weight Mw, number average molecular weight Mn and MwZMn are gels.
- the measurement was carried out by one-shot chromatography (GPC). As a GPC device, it is ⁇ / ⁇ made by 63 0 0?
- the test was carried out with a C150CAL CZG PC, using one GPCUT802.5 made by SHODEX as a column and two UT806M.
- the solvent used was o-dichlorobenzene, and the column temperature was set at 144 ° C. Sample concentration is 1. O mg Z
- the measurement was performed by injecting 200 microliters as m 1.
- the calibration curve of the molecular weight is constructed using a polystyrene sample whose molecular weight is known by the universal calibration method.
- Percentage of poorly dispersed yarn (weight of poorly dispersed yarn) ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
- Small-angle X-ray scattering was measured by the following method.
- the X-rays used for the measurement are generated using a rotor flex RU-300 manufactured by Rigaku Corporation. The operation was carried out with a 30 kVX 30 m person fine focus using a copper counter-cathode as the target.
- the optical system used a point-focusing camera, and the X-rays were monochromatic using a nickel filter.
- an imaging plate (FDLUR-V) manufactured by Fuji Photo Film Co., Ltd. was used as the detector.
- the distance between the sample and the detector may be any suitable distance between 20 Omm and 35 Omm. Fill the space between the sample and the detector with helium gas to reduce the disturbing background ground scattering from the air.
- the exposure time is 2 to 3 hours.
- the intensity equation of small-angle X-ray scattering is expressed by one equation considering axial symmetry.
- J is the diffraction function
- A is the meridian size of the high electron density region
- b is its width
- Z is the meridian size of the low electron density region
- ⁇ is
- 3 ⁇ ⁇ ⁇ , where ⁇ represents the thickness of the interface layer between the high and low electron density regions.
- h, k, and 1 are the reciprocal lattice spatial axes corresponding to the real space coordinates x, y, and z (see Fig. 1, where the inclination angle is shown).
- the small-angle X-ray scattering image was calculated from Equation 1, and the values of parameters A, b, and Z were determined so as to reproduce the actually obtained small-angle X-ray scattering image.
- the proportion (q) occupied by highly ordered parts (crystals) in the repeating unit of the long-period structure is calculated by equation (2).
- Weight average molecular weight 1 1 5, 0 0 0, weight average; ⁇ molecular weight and number average A high-density polyethylene having a molecular weight ratio of 2.3 was discharged from a spinneret consisting of 0.8 mm 1 OH at a single-hole discharge rate of 0.5 g at 290 °.
- the extruded fiber passes through a 15 cm long heated cylinder heated to 110 ° C, is quenched in a cooling bath maintained at 20 ° C, and is wound up at a speed of 300 m / min. It is.
- the undrawn yarn was heated to 100 ° C., supplied at a rate of 100 m, and drawn twice. After that, it was heated to 130 ° C and stretched 7 times to obtain a drawn yarn. Table 1 shows the physical properties of the obtained fiber.
- Example 1 The experiment was performed in the same manner as in Example 1 except that the winding speed was set to 50 OmZ and the stretching ratio of the second step was set to 4.1 times. Table 1 shows the physical properties of the obtained fiber.
- the undrawn yarn was heated to 100 ° C. and supplied at a rate of 1 O mZ, and drawn twice. Thereafter, the experiment was performed in the same manner as in Example 1 except that the fiber was heated to 130 ° C. and stretched 14 times to obtain a stretched yarn. Table 1 shows the physical properties of the drawn yarn.
- the undrawn yarn was heated to 100 ° C. and supplied at a rate of 10 m / min to draw twice. Further, after that, it was heated to 130 ° C. and stretched 20 times, and an experiment was performed in the same manner as in Example 1 except that a stretched yarn was obtained.
- Table 1 shows the physical properties of the drawn yarn.
- a high-density polyethylene with a weight-average molecular weight of 152,000 and a ratio of weight-average molecular weight to number-average molecular weight of 2.4 was converted to a single hole at 300 degrees from a 0.9 mml OH spinneret.
- An undrawn yarn was obtained in the same manner as in Example 1 except that the extruded material was extruded at a rate of 0.5 gZ.
- the undrawn yarn was heated to 100 ° C. and supplied at 10 mZ to draw twice. After that, it was heated to 135 C and stretched 8.0 times to obtain a drawn yarn. Table 1 shows the physical properties of the drawn yarn.
- Ultra-high-molecular-weight polyethylene with a weight-average molecular weight of 3,200,000 and a ratio of weight-average molecular weight to number-average molecular weight of 6.3 was added at 1 O wt% and decahydronaphtalene at 9 O wt%. While dispersing the slurry-like mixture, it was melted with a screw-type kneader set at a temperature of 230 ° C, and the diameter of 0.2 mm set at 170 ° C was changed to 20000. A single-hole discharge amount of 0.08 g was supplied to the base having holes using a metering pump.
- High-density polyethylene with a weight-average molecular weight of 125, 000, and a ratio of weight-average molecular weight to number-average molecular weight of 4.9 was prepared from a spinneret composed of 0.8 mm 1 OH at 300 degrees from a spinneret.
- the extruded material was extruded at a rate of 0.6 g min.
- the extruded fiber passed through a 60 cm long hot tube heated to 270 ° C and was then quenched by air maintained at 20 ° C and wound at a speed of 9 OmZ. Be taken away.
- the undrawn yarn was heated to 100 ° C. and supplied at a rate of 10 m / min to draw twice. Thereafter, it was heated to 130 ° C. and stretched 15 times to obtain a drawn yarn.
- Table 2 shows the physical properties of the obtained fiber.
- the undrawn yarn of Comparative Example 2 was heated to 100 ° C., supplied at 1 Om / min, and drawn twice. After that, it was heated to 130 ° C and the drawing was performed 16 times, but the yarn was broken and the drawn yarn could not be obtained.
- High-density polyethylene having a weight-average molecular weight of 125,000 and a ratio of the weight-average molecular weight to the number-average molecular weight of 6.7 was spun in the same manner as in Example 1.
- the obtained unstretched yarn was heated to 100 ° C and supplied at lOmZ to draw twice. And then
- High-density polyethylene with a weight-average molecular weight of 11.5, 0, 0, and a ratio of weight-average molecular weight to number-average molecular weight of 2.3 was obtained from a spinneret consisting of 0.8 mm 1 OH at a single hole at 290 ° from the spinneret.
- the extruded product was extruded at a rate of 0.5 g.
- the extruded fiber is quenched with 25 ° C cold air and wound up at a speed of 300 m / min.
- the undrawn yarn was put into a drawing machine at 5 mZ to obtain a drawn yarn having a total draw ratio of 9.0.
- Table 3 shows the physical properties of the obtained fiber.
- High-density polyethylene with a weight-average molecular weight of 152, 000 and a ratio of weight-average molecular weight to number-average molecular weight of 2.4 is discharged from a 1.2 mml OH spinneret at 300 degrees through a single hole.
- An undrawn yarn was obtained in the same manner as in Example 1 except that the extruded material was extruded at a rate of 0.5 g.
- the undrawn yarn was charged into a drawing machine at 5 mZ to obtain a drawn yarn having a total draw ratio of 17.0 times.
- Table 3 shows the physical properties of the obtained fiber.
- a high-density polyethylene with a weight-average molecular weight of 125,000 and a ratio of weight-average molecular weight to number-average molecular weight of 4.9 was obtained from a spinneret consisting of 0.8 mm 1 OH at 300 degrees from a spinneret. Extruded at a rate of 0.5 g. The extruded fiber passes through a 60 cm long hot tube heated to 270 ° C and is then quenched by air maintained at 20 ° C and wound at a speed of 90 m / min. Taken. The unstretched yarn was heated to 100 ° C. and supplied at a rate of 10 m, and doubled. Thereafter, it was heated to 130 ° C. and stretched 15 times to obtain a drawn yarn. Table 4 shows the physical properties of the obtained fiber.
- the undrawn yarn of Comparative Example 6 was heated to 100 ° C., supplied at 1 Om / min, and drawn twice. After that, it was heated to 130 ° C and the drawing was performed 16 times, but the yarn was broken and the drawn yarn could not be obtained.
- High-density polyethylene having a weight-average molecular weight of 125,000 and a ratio of the weight-average molecular weight to the number-average molecular weight of 6.7 was spun in the same manner as in Example 6.
- the obtained undrawn yarn was heated at 100 ° C. and supplied at 10 mZ to draw twice. Then, it was heated to 130 ° C and stretched 7 times.
- Table 4 shows the physical properties of the obtained fiber.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/450,159 US6899950B2 (en) | 2000-12-11 | 2001-12-07 | High strength polyethylene fiber |
AU2002221091A AU2002221091A1 (en) | 2000-12-11 | 2001-12-07 | High strength polyethylene fiber |
EP01270642A EP1350868B1 (en) | 2000-12-11 | 2001-12-07 | High strength polyethylene fiber |
DE60129160T DE60129160T2 (de) | 2000-12-11 | 2001-12-07 | Hochfeste polyethylenfaser |
US11/106,659 US7141301B2 (en) | 2000-12-11 | 2005-04-15 | High strength polyethylene fiber |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000376390A JP3734077B2 (ja) | 2000-12-11 | 2000-12-11 | 高強度ポリエチレン繊維 |
JP2000-376390 | 2000-12-11 | ||
JP2000-387652 | 2000-12-20 | ||
JP2000387652A JP4478853B2 (ja) | 2000-12-20 | 2000-12-20 | 高強度ポリエチレン繊維 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10450159 A-371-Of-International | 2001-12-07 | ||
US11/106,659 Division US7141301B2 (en) | 2000-12-11 | 2005-04-15 | High strength polyethylene fiber |
Publications (1)
Publication Number | Publication Date |
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WO2002048436A1 true WO2002048436A1 (fr) | 2002-06-20 |
Family
ID=26605614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/010754 WO2002048436A1 (fr) | 2000-12-11 | 2001-12-07 | Fibre en polyethylene haute resistance |
Country Status (6)
Country | Link |
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US (2) | US6899950B2 (ja) |
EP (2) | EP1350868B1 (ja) |
AT (1) | ATE365819T1 (ja) |
AU (1) | AU2002221091A1 (ja) |
DE (1) | DE60129160T2 (ja) |
WO (1) | WO2002048436A1 (ja) |
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JP2022526113A (ja) * | 2019-03-21 | 2022-05-23 | コーロン インダストリーズ インク | 耐切断性ポリエチレン原糸、その製造方法、およびこれを用いて製造された保護用製品 |
JP2022530529A (ja) * | 2019-12-27 | 2022-06-29 | コーロン インダストリーズ インク | ポリエチレン原糸、その製造方法、およびこれを含む冷感性生地 |
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-
2001
- 2001-12-07 AT AT01270642T patent/ATE365819T1/de not_active IP Right Cessation
- 2001-12-07 DE DE60129160T patent/DE60129160T2/de not_active Expired - Lifetime
- 2001-12-07 EP EP01270642A patent/EP1350868B1/en not_active Expired - Lifetime
- 2001-12-07 AU AU2002221091A patent/AU2002221091A1/en not_active Abandoned
- 2001-12-07 EP EP06003066A patent/EP1662025A3/en not_active Withdrawn
- 2001-12-07 US US10/450,159 patent/US6899950B2/en not_active Expired - Lifetime
- 2001-12-07 WO PCT/JP2001/010754 patent/WO2002048436A1/ja active IP Right Grant
-
2005
- 2005-04-15 US US11/106,659 patent/US7141301B2/en not_active Expired - Fee Related
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JPS61102412A (ja) * | 1984-10-23 | 1986-05-21 | Kuraray Co Ltd | 高強力ポリエチレン用紡糸原糸の製造法 |
JPH0314680A (ja) * | 1989-06-12 | 1991-01-23 | Toyobo Co Ltd | 改質された高強度・高弾性率ポリエチレン繊維及びこれを用いた繊維強化複合体 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022526113A (ja) * | 2019-03-21 | 2022-05-23 | コーロン インダストリーズ インク | 耐切断性ポリエチレン原糸、その製造方法、およびこれを用いて製造された保護用製品 |
JP7333411B2 (ja) | 2019-03-21 | 2023-08-24 | コーロン インダストリーズ インク | 耐切断性ポリエチレン原糸、その製造方法、およびこれを用いて製造された保護用製品 |
JP2022530529A (ja) * | 2019-12-27 | 2022-06-29 | コーロン インダストリーズ インク | ポリエチレン原糸、その製造方法、およびこれを含む冷感性生地 |
JP7289931B2 (ja) | 2019-12-27 | 2023-06-12 | コーロン インダストリーズ インク | ポリエチレン原糸、その製造方法、およびこれを含む冷感性生地 |
Also Published As
Publication number | Publication date |
---|---|
EP1350868B1 (en) | 2007-06-27 |
US20040062926A1 (en) | 2004-04-01 |
EP1350868A1 (en) | 2003-10-08 |
EP1350868A4 (en) | 2005-06-01 |
EP1662025A3 (en) | 2006-08-09 |
US7141301B2 (en) | 2006-11-28 |
US20050238875A1 (en) | 2005-10-27 |
EP1662025A2 (en) | 2006-05-31 |
US6899950B2 (en) | 2005-05-31 |
DE60129160D1 (de) | 2007-08-09 |
DE60129160T2 (de) | 2008-03-06 |
ATE365819T1 (de) | 2007-07-15 |
AU2002221091A1 (en) | 2002-06-24 |
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