WO2018168980A1 - Procédé de production d'un matériau de friction, et matériau de friction - Google Patents

Procédé de production d'un matériau de friction, et matériau de friction Download PDF

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Publication number
WO2018168980A1
WO2018168980A1 PCT/JP2018/010113 JP2018010113W WO2018168980A1 WO 2018168980 A1 WO2018168980 A1 WO 2018168980A1 JP 2018010113 W JP2018010113 W JP 2018010113W WO 2018168980 A1 WO2018168980 A1 WO 2018168980A1
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Prior art keywords
friction material
friction
water
weight
absorbing polymer
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PCT/JP2018/010113
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English (en)
Japanese (ja)
Inventor
拓央 吉田
勇太 小池
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株式会社アドヴィックス
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Publication of WO2018168980A1 publication Critical patent/WO2018168980A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing

Definitions

  • the present invention relates to a method of manufacturing a friction material and a friction material used for a brake device or the like for a vehicle.
  • Patent Document 1 if the negative gradient ( ⁇ -V negative gradient) of ⁇ (friction coefficient) with respect to V (vehicle speed) is reduced, occurrence of brake noise after leaving in a low temperature and high humidity environment It is disclosed to reduce.
  • the friction material contains zirconium oxide having a 50% particle diameter in the range of 0.1 to 5.0 ⁇ m as an abrasive at 15 to 35% by mass based on the total amount of the friction material composition, and other than zirconium oxide
  • the content of the abrasive having a Mohs hardness of 7.0 or more is 2.0 mass% or less with respect to the total amount of the friction material composition.
  • slaked lime is converted to quicklime (calcium oxide) when subjected to a heat history, and utilizes the feature of absorbing moisture to create cream under humid environment, and using slaked lime as a filler in a friction material It contains a large amount (at least 7 to 30% by volume) and contains a small amount (2.0 to 3.5% by volume) of aluminum particles.
  • quicklime calcium oxide
  • ME morning effect
  • Patent Document 3 describes that a friction material containing hydrophilic activated carbon as a friction modifier has a function of adsorbing sulfate ion and water.
  • the hydrophilic activated carbon is contained in an amount of 0.4 to 5.0% by weight based on the total amount of the friction material composition, and the average particle diameter thereof is 80 to 200 ⁇ m.
  • Patent Document 1 is highly aggressive to the rotor because the content of zirconium oxide in the friction material is as large as 15 to 35% by mass, and the wear of the rotor and disk thickness variation The deterioration of the brake vibration (shudder) due to the growth of the disc thickness deviation) is assumed.
  • the technique disclosed in Patent Document 2 contains a large amount of slaked lime, the flow inhibition of a binder such as a phenol resin becomes remarkable, and a decrease in the strength of the friction material is assumed.
  • Patent Document 3 uses activated carbon, the adsorption of water in a high humidity environment and the adsorption of liquid water such as condensed water become insufficient, and the occurrence of a brake noise phenomenon is effective. It is assumed that it can not be suppressed.
  • this invention makes it a subject to provide the manufacturing method and friction material of a friction material which can reduce generation
  • the inventors of the present invention conducted intensive studies to solve the above-mentioned problems, and by incorporating a powdery water-absorbing polymer at the time of production of the friction material, the influence of moisture at the time of braking after leaving in a high humidity environment. We focused on being able to minimize As a result, it has been found that the aggregation of the wear powder is suppressed, the increase in the true contact area with the rotor which is the opposite material of the friction material can be suppressed, and the occurrence of the squeal phenomenon can be reduced.
  • the method of manufacturing the friction material and the friction material relate to the following [1] and [2].
  • [1] A method of manufacturing a friction material, wherein the content of copper as an element is 0.5% by weight or less based on the entire friction material, A mixing step of mixing a friction material material containing a fibrous base material, a binder, an organic filler containing a powdery water-absorbing polymer, and an inorganic filler containing calcium hydroxide to obtain a friction material mixture , Forming the friction material raw material mixture obtained in the mixing step into a predetermined shape.
  • the friction material manufactured by the method of the above [1] can reduce the occurrence of the noise phenomenon at the time of initial brake operation in a high humidity environment. This is because the presence of the water absorbing polymer efficiently removes the water on the friction surface of the friction material and the rotor as the counterpart material, thereby suppressing the aggregation of the wear powder, and the true contact area between the friction material and the counterpart material. This is because the increase can be suppressed. Furthermore, by mixing a powdery water-absorbing polymer as a raw material of the friction material, the water-absorbing polymer easily remains without forming an irreversible ionic cross-link with a divalent metal ion derived from calcium hydroxide. As a result, the water absorbing polymer is present in the friction material while maintaining its water absorbing performance well, the water in the friction surface is effectively absorbed, and the occurrence of the squeal phenomenon can be reliably reduced. .
  • the method of manufacturing the friction material according to the present embodiment includes a mixing step of mixing the friction material raw material and a forming step of molding the mixed friction material raw material into a predetermined shape.
  • the friction material raw material is weighed, and these are uniformly mixed.
  • the friction material raw material is all the materials to be mixed in carrying out the method of manufacturing the friction material according to the present embodiment, and includes the fiber base material, the binder, the organic filler, the inorganic filler and the like described later. .
  • it contains a water absorbing polymer as an organic filler, and contains calcium hydroxide having a function of a pH adjusting material as an inorganic filler.
  • materials generally used in manufacturing friction materials correspond to friction material raw materials.
  • the friction material manufactured by the method of manufacturing a friction material according to the present embodiment is a non-asbestos-based friction material (NAO material). Moreover, it does not substantially contain a copper component with high environmental impact as a friction material raw material (copper free). Specifically, the copper component is not contained, or even when contained, it is 0.5% by weight or less with respect to the entire friction material raw material.
  • the friction material manufactured by the method of manufacturing a friction material according to the present embodiment sufficiently corresponds to the movement of copper freeing.
  • the fiber base can be exemplified by organic fibers, metal fibers, natural or man-made inorganic fibers, and the like.
  • Specific examples of the fiber base include aromatic polyamide fibers (aramid fibers), acrylic fibers, cellulose fibers, carbon fibers and the like as organic fibers, and metal fibers such as steel, stainless steel, aluminum, zinc, And, single metals such as tin, fibers of respective alloy metals, and the like can be mentioned, and as inorganic fibers, rock wool, glass fibers, etc. can be mentioned.
  • the fiber substrate may be used alone or in combination of two or more.
  • the content of the fiber base is not particularly limited, it is preferably contained in an amount of 3 to 15% by weight based on the whole of the friction material raw material.
  • the bonding material has a function of bonding the friction material raw material and gives strength to the friction material.
  • the binder include phenol resin, epoxy resin, melamine resin, and imide resin, and it is also possible to use modified resins such as estramer, hydrocarbon resin, and epoxy. .
  • a binder can also be used individually by 1 type or in combination of multiple types. Although the content of the binder is not particularly limited, it is preferably contained in an amount of 3 to 10% by weight based on the whole of the friction material raw material.
  • the organic filler contains a water absorbing polymer.
  • the water-absorbing polymer is a polymer having a large number of hydrophilic groups in its molecule, and exhibits a three-dimensional network structure by polymerizing monomers and, if necessary, crosslinking them.
  • the hydrophilic group can be exemplified by a carboxy group, a sulfo group, a hydroxy group, an amino group, an amido group, a phosphoric acid group, an ether and the like, and is preferably a proton-dissociated hydrophilic group.
  • polyacrylic acid (salt) type polysulfonic acid (salt) type, maleic anhydride (salt) type, polyaspartic acid (salt) type, polyglutamic acid (salt) type, polyalginic acid (salt) type
  • Starch- and cellulose-based water-absorbing polymers by graft polymerization or carboxymethylation such as polyvinyl alcohol type, polyacrylamide type, polyoxyethylene type, polyethylene imine type, polyvinyl pyrrolidone type, and acrylonitrile, and derivatives thereof
  • the salt is a salt that can be dissociated by the presence of water molecules, preferably a salt with a monovalent ion such as an alkali metal salt.
  • a salt with a monovalent ion such as an alkali metal salt.
  • alkali metal salts of polyacrylic acid such as sodium polyacrylate and potassium polyacrylate
  • polyacrylate-based water absorbent polymers such as ammonium polyacrylate.
  • the water-absorbing polymer is preferably in a water-free state.
  • the property of the water absorbing polymer can be, for example, a solid such as powder, particles, and fibers. From the viewpoint of retention of the water absorption performance of the water absorbent polymer and uniform mixing with other friction material raw materials, it is preferable to use powder form.
  • the substantially water-free powdered water-absorbing polymers have hydrophilic groups that can contribute to their water absorption performance without forming irreversible ionic crosslinks. It becomes easy to remain and can exhibit its water absorption performance effectively.
  • the water-absorbing polymer may or may not be cross-linked with a suitable crosslinker in the polymer backbone.
  • the crosslinking agent is not particularly limited, and any compound known in the art that can be used for crosslinking the water-absorbing polymer can be used, for example, N, N'-methylenebisacrylamide or N, N '.
  • bisacrylamide compounds such as ethylene bis acrylamide
  • diglycidyl ether compounds such as (poly) ethylene glycol diglycidyl ether and (poly) propylene glycol diglycidyl ether
  • dimethacrylate compounds such as ethylene glycol dimethacrylate and the like be able to.
  • crosslinking can be carried out by copolymerizing with a crosslinking monomer.
  • the amount of the crosslinking agent used is also not particularly limited, and can be appropriately set according to the desired crosslinking density.
  • sodium polyacrylate (Toagosei, ARON (registered trademark) A-20P-X: powder type, viscosity 400 to 600 mPa ⁇ s / 30 ° C. (0.2% aqueous solution) ), Molecular weight 5,000,000
  • polyacrylic acid Toagosei, Jurimer (registered trademark): powder type, viscosity 500 to 1000 mPa ⁇ s / 25 ° C. (10% aqueous solution)
  • crosslinked sodium polyacrylate (Leodic (registered trademark)) Powder type, viscosity 1500 to 3000 mPa ⁇ s / 25 ° C. (0.5% aqueous solution), viscosity 7000 to 13000 mPa ⁇ s / 25 ° C. (0.5% aqueous solution), etc.
  • Toagosei, ARON (registered trademark) A-20P-X powder type, viscosity 400 to 600 mPa ⁇ s /
  • the water absorbent polymer has a water absorption performance as high as several hundred times its own weight. Such water absorption performance will be described by taking a salt of a proton dissociative hydrophilic group such as polyacrylate as an example.
  • a salt of a proton dissociative hydrophilic group such as polyacrylate
  • intermolecular chains are tightly intertwined to form a three-dimensional network structure at the time of drying, but water molecules enter inside by capillary action. Due to the presence of the water molecule, the metal ion is dissociated from the salt of the hydrophilic group on the water absorbing polymer molecule, and the hydrophilic group becomes an anion.
  • the hydrophilic groups have the same charge, they are electrically repelled from each other, spread the network structure, and have a structure with many gaps.
  • the ion concentration of the inside of the network structure is increased by the dissociated metal ions, and a difference in ion concentration occurs between the inside and the outside of the water absorbing polymer.
  • an osmotic pressure is generated, water molecules are taken into the inside of the network structure, and the water absorbing polymer is swelled to exhibit high water absorption performance.
  • the water-absorbing polymer is preferably contained in an amount of 0.1 to 4.0% by weight, particularly preferably 0.1 to 3.0% by weight.
  • the content of the water-absorbing polymer exceeds 4.0% by weight, the strength of the friction material is lowered, and the abrasion resistance is unfavorably deteriorated.
  • the content is 3.0% by weight or less, the general efficacy and the wear characteristics become good.
  • the content is less than 0.1% by weight, the water absorption performance of the water-absorbing polymer can not be exhibited.
  • the organic filler can contain cashew dust, rubber powder, tire powder, fluorine polymer and the like in addition to the water absorbing polymer, and one or more of these can be used alone or in combination.
  • the present invention is not limited to the above specific example, and organic fillers known in the art can be preferably used.
  • the content of the organic filler is also not particularly limited, and may be a content generally used in the relevant technical field.
  • the inorganic filler contains calcium hydroxide having a function as a pH adjusting material.
  • Calcium hydroxide is a hydroxide of calcium and is ionized into calcium ions and hydroxide ions which are divalent metal ions, and exhibits strong alkalinity.
  • an inorganic friction modifier in addition to calcium hydroxide, an inorganic friction modifier, titanate, calcium carbonate, magnesium carbonate, barium sulfate, mica, talc, calcium silicate and the like can be contained.
  • titanates include alkali metal titanates and alkali metal titanate / second group salts. Specific examples thereof include potassium titanate, sodium titanate, lithium titanate, lithium potassium titanate, and magnesium titanate. Potassium and the like can be mentioned.
  • the titanate can be contained preferably in an amount of 10 to 30% by weight based on the entire friction material raw material. This makes it possible to compensate for the deterioration of the wear resistance due to the reduction of the copper component.
  • silica such as silicon dioxide, zirconium silicate, zirconium oxide (zirconia), magnesium oxide, aluminum oxide (alumina), chromium oxide (chromium (II) etc.), iron oxide (iron trioxide tetraoxide, etc. Ferric oxide etc., and ceramic powder etc.
  • the inorganic friction modifier is an inorganic substance having a Mohs hardness of 6.5 or more and an average particle diameter of 5 to 250 ⁇ m, preferably 10 to 200 ⁇ m, and is not limited to the above specific example and is preferably an inorganic substance known in the art. Although it can be used, it is preferably zirconium oxide, chromium oxide or aluminum oxide.
  • the content of the inorganic friction modifier is preferably 0.1 to 1.5% by weight, particularly preferably 0.1 to 1.0% by weight, based on the total weight of the friction material.
  • the inorganic friction modifier exceeds 1.0% by weight, the contradiction of the attack on the rotor, which is the opposite material, becomes a problem.
  • adjusting to the said range is preferable.
  • a single metal such as iron, aluminum, zinc or tin and a metal such as a metal powder of each alloy metal can be contained.
  • inorganic fillers may be used alone or in combination of two or more.
  • the content of the inorganic filler is not particularly limited, and may be a content generally used in the relevant technical field.
  • a lubricant can be contained, and specific examples thereof include coke, graphite, carbon black, graphite, metal sulfide and the like.
  • metal sulfides include tin sulfide, antimony trisulfide, molybdenum disulfide, tungsten sulfide and the like.
  • the lubricants may be used alone or in combination of two or more.
  • the content of the lubricant is not particularly limited, and may be a content generally used in the relevant technical field.
  • the mixing method is not particularly limited as long as the friction material can be uniformly mixed, and can be carried out by methods known in the art. It is preferable to mix the friction material in powder form, which facilitates uniform mixing of the friction material.
  • the friction material raw material is preferably mixed in a water-free state or in a very small amount even when water is contained, and in particular, the water-absorbent polymer is mixed in a water-free state to maintain its water absorption performance. It is preferable to do. Therefore, the water content is preferably 1.0% by weight or less with respect to the entire friction material raw material.
  • the mixing method is not particularly limited as long as the friction material raw materials can be uniformly mixed, and can be mixed by methods known in the art. Specifically, mixing can be performed using a mixer such as a Fenshell mixer or a Loedige mixer, and for example, mixing is performed for about 10 minutes at normal temperature. At this time, the mixture of the raw materials for the friction material may be mixed while being cooled by a known cooling method so that the temperature does not rise.
  • a mixer such as a Fenshell mixer or a Loedige mixer
  • the forming step can be performed by pressing the friction material material with a press or the like, and can be performed based on methods known in the relevant technical field.
  • any of a hot press method in which the friction material material is heated, pressed and solidified, and a normal temperature pressing method in which the friction material material is pressed and solidified at normal temperature without heating may be used.
  • the molding temperature is 140 ° C. to 200 ° C. (preferably 160 ° C.)
  • the molding pressure is 10 MPa to 30 MPa (preferably 20 MPa)
  • the molding time is 3 minutes to 15 minutes Preferably, it can be 10 minutes.
  • molding can be performed by setting the molding pressure to 50 MPa to 200 MPa (preferably 100 MPa) and setting the molding time to 5 seconds to 60 seconds (preferably 15 seconds). Subsequently, clamp processing (for example, 180 ° C., 1 MPa, 10 minutes) is performed. After that, heat treatment (preferably 230 ° C., 3 hours) can be performed at 150 ° C. to 250 ° C. for 5 minutes to 180 minutes.
  • a polishing process may be provided to polish the surface of the friction material to form a friction surface.
  • the friction material manufactured by the method of manufacturing the friction material according to the present embodiment can be applied to a disc brake pad for a vehicle etc.
  • the present invention is not limited thereto, and a conventionally known friction material such as a brake shoe can be applied. It can be applied to things.
  • the said friction material can be integrated with plate-shaped members, such as a metal plate as a back plate, for example, and can be used as a pad for brakes.
  • the friction material according to the present embodiment contains a fibrous base material, a binder, an organic filler, and an inorganic filler, and does not contain copper as an element, or the content of copper is zero with respect to the entire friction material. .5% by weight or less, containing a powdery water-absorbing polymer as an organic filler and calcium hydroxide as an inorganic filler.
  • the friction material is manufactured by the method of manufacturing the friction material according to the above-described embodiment. In addition, about the kind of each friction material raw material, and content, it is as having mentioned above.
  • the generation of the squeal phenomenon is suppressed in the high humidity environment by suppressing the increase of the real contact area of the friction material with the mating material at the time of initial braking operation. It can be reduced.
  • the wear powder is taken in because it spreads and spreads within the friction surface between the friction material and the rotor which is the opposite material while taking in some wear powder. It is repeated that copper is discharged from within the friction surface while appropriately roughening the mating material.
  • the presence of the powdery water absorbing polymer efficiently removes the water on the friction surface between the friction material and the mating material, and the aggregation of the wear powder is caused.
  • the increase in the true contact area between the friction material and the mating material can be suppressed.
  • the occurrence of the noise phenomenon at the time of the initial brake operation in a high humidity environment can be effectively reduced.
  • the powdery water-absorbing polymer has good water absorption performance by mixing the powdery water-absorbing polymer as a friction material raw material It will exist in a friction material in the state hold
  • the hydrophilic groups of the water absorbing polymer including the carboxy group are derived from calcium hydroxide or the like of the pH adjusting material contained in the friction material raw material. The formation of irreversible ionic crosslinks with divalent metal ions etc. reduces the water absorption performance.
  • since the water-absorbing polymer in powder form is easily left without forming the ionic crosslinks irreversibly, Water can be absorbed effectively.
  • an inorganic filler having a Mohs hardness of 6.5 or more and an average particle diameter of 10 to 200 ⁇ m is preferably added to the friction material as 0.1.
  • an inorganic filler having a Mohs hardness of 6.5 or more and an average particle diameter of 10 to 200 ⁇ m is preferably added to the friction material as 0.1.
  • Example 1 to 31 and Comparative Examples 1 to 3 the friction material prepared by blending the friction material raw material according to the compounding amount shown in FIGS. 1 and 2 is used as a brake pad, and general efficacy, wear resistance, vibration and brake noise I made an evaluation.
  • the unit of the compounding quantity of each friction material raw material in a figure is weight% with respect to the whole friction material raw material.
  • the average friction number at an initial speed of 50 km / h and 100 km / h of the second efficacy test was evaluated in three stages based on the following criteria. :: Average friction coefficient 0.37 or more and 0.43 or less ⁇ : Average friction coefficient 0.34 or more and less than 0.37, or more than 0.43 and less than 0.46 ⁇ : Average friction coefficient less than 0.34 or 0 More than .46
  • the fade coefficient of friction was evaluated in three stages according to the following criteria. ⁇ : fade coefficient of friction 0.3 or more ⁇ : fade coefficient of friction 0.2 or more and less than 0.3 ⁇ : fade coefficient of friction less than 0.2
  • the friction material of this example contains, in particular, 0.1 to 3.0% by weight of a water absorbing polymer, and an inorganic filler having an average particle diameter of 10 to 200 nm and a Mohs hardness of 6.5 or more and 0.1.
  • a water absorbing polymer contains, in particular, 0.1 to 3.0% by weight of a water absorbing polymer, and an inorganic filler having an average particle diameter of 10 to 200 nm and a Mohs hardness of 6.5 or more and 0.1.
  • ⁇ 1.0% by weight Examples 7 to 17 and 19 to 21
  • Comparative Examples 1 to 3 which do not contain powdery sodium polyacrylate, the occurrence of the squeal was confirmed, and therefore the reduction effect of the squeal phenomenon occurrence confirmed in the present example is the powdery water absorption. It is clear that it is due to the polymer. Further, it was also confirmed that the powdery water-absorbing polymer can exert its effect regardless of the crosslinked and non-crosslinked types.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un procédé de production d'un matériau de friction qui contient du cuivre élémentaire à raison de 0,5 % en poids ou moins par rapport à l'ensemble du matériau de friction. Ce procédé de production d'un matériau de friction comprend : une étape de mélange au cours de laquelle un mélange de matériaux de départ pour matériau de friction est obtenu par mélange de matériaux de départ pour matériau de friction comprenant un matériau de base en fibres, un liant, une charge organique qui contient un polymère absorbant l'eau en poudre, et une charge inorganique qui contient de l'hydroxyde de calcium ; et une étape de moulage au cours de laquelle le mélange de matériaux de départ pour matériau de friction obtenu au cours de l'étape de mélange est moulé selon une forme prédéterminée.
PCT/JP2018/010113 2017-03-15 2018-03-15 Procédé de production d'un matériau de friction, et matériau de friction WO2018168980A1 (fr)

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JP2017-050404 2017-03-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113774664A (zh) * 2021-09-18 2021-12-10 岳阳澳源通信材料有限公司 一种阻水纱线及其制备方法和在光缆光纤套管中的应用

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2265630C1 (ru) * 2004-06-22 2005-12-10 Алтайский государственный университет Фрикционный материал
JP2008024891A (ja) * 2006-07-25 2008-02-07 Advics:Kk 摩擦材
WO2016047723A1 (fr) * 2014-09-25 2016-03-31 株式会社アドヴィックス Matériau de friction et procédé de production de matériau de friction
JP2017025286A (ja) * 2015-07-22 2017-02-02 日清紡ブレーキ株式会社 摩擦材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2265630C1 (ru) * 2004-06-22 2005-12-10 Алтайский государственный университет Фрикционный материал
JP2008024891A (ja) * 2006-07-25 2008-02-07 Advics:Kk 摩擦材
WO2016047723A1 (fr) * 2014-09-25 2016-03-31 株式会社アドヴィックス Matériau de friction et procédé de production de matériau de friction
JP2017025286A (ja) * 2015-07-22 2017-02-02 日清紡ブレーキ株式会社 摩擦材

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113774664A (zh) * 2021-09-18 2021-12-10 岳阳澳源通信材料有限公司 一种阻水纱线及其制备方法和在光缆光纤套管中的应用
CN113774664B (zh) * 2021-09-18 2022-07-29 岳阳澳源通信材料有限公司 一种阻水纱线及其制备方法和在光缆光纤套管中的应用

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