CN115012068B - Bicomponent polyester fiber with high and low temperature melting temperature, preparation method and application - Google Patents

Bicomponent polyester fiber with high and low temperature melting temperature, preparation method and application Download PDF

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Publication number
CN115012068B
CN115012068B CN202210856971.0A CN202210856971A CN115012068B CN 115012068 B CN115012068 B CN 115012068B CN 202210856971 A CN202210856971 A CN 202210856971A CN 115012068 B CN115012068 B CN 115012068B
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Prior art keywords
polyester fiber
temperature
area
filter material
melting temperature
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Chinese (zh)
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CN115012068A (en
Inventor
张志娟
吴家胜
计婧
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Hollingsworth And Vose Suzhou Special Material Co ltd
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Hollingsworth And Vose Suzhou Special Material Co ltd
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/28Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30Conjugate filaments; Spinnerette packs therefor
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00General methods for the manufacture of artificial filaments or the like
    • D01F1/02Addition of substances to the spinning solution or to the melt
    • D01F1/09Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

The invention discloses a bi-component polyester fiber with high and low temperature melting temperature, a preparation method and application thereof. In the invention, the conductive special-shaped bi-component polyester fiber with high and low melting temperature can adapt to the gradual heating process in the preparation process of the self-conductive oil liquid filtration filter material, the material with low melting temperature is melted before the material with high melting temperature, so that other fibers of the filter material can be fully bonded with the polyester fiber, the uniform distribution of the fibers in the filter material is greatly improved, the surface resistivity of the filter material is greatly reduced, the conductivity is greatly improved, and the voltage caused by charge accumulation in the use process of the filter material can be further reduced, and the breakdown of the filter material is avoided.

Description

Bicomponent polyester fiber with high and low temperature melting temperature, preparation method and application
Technical Field
The invention belongs to the technical field of filter materials, and particularly relates to a bicomponent polyester fiber with high and low temperature melting temperature, a preparation method and application thereof.
Background
At present, most of filter materials for filtering oil liquid such as hydraulic oil, lubricating oil and fuel oil adopt polyester fibers, and most of the polyester fibers are single-component polyester or polyester fibers with core-shell structures and have no conductivity, so that voltage is generated when the oil liquid passes through the filter materials, and the filter materials are broken down to a certain extent by the voltage enrichment, so that the filtering efficiency of the filter materials is greatly reduced. In order to solve the problem, the conductive capacity is generally improved by adding conductive metal wires to make a conductive filter material, but the added conductive metal wires have no binding force with other parts of the filter material, so that the metal wires are easy to fall off. Therefore, how to provide the filter itself with conductivity is a problem to be solved by the filter for oil filtration.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a bicomponent polyester fiber with high and low temperature melting temperature, and a preparation method and application thereof.
In order to achieve the above purpose and achieve the above technical effects, the invention adopts the following technical scheme:
the double-component polyester fiber with high and low temperature melting temperature is conductive, the double-component polyester fiber is obtained by feeding a material with low melting temperature and a material with high melting temperature into an A area and a B area of a screw extruder respectively and then carrying out coextrusion, the A area and the B area are arranged according to a certain rule, at least one of the material with low melting temperature and the material with high melting temperature has conductivity, the melting temperature of the material with low melting temperature is lower than that of the material with high melting temperature, and the material with low melting temperature is melted before the material with high melting temperature.
Further, the cross section of the bi-component polyester fiber is in a circular structure, the bi-component polyester fiber comprises a plurality of first components and a plurality of second components, the first components are made by extruding materials with low melting temperature in an area A, the second components are made by extruding materials with high melting temperature in an area B, the first components and the second components are identical in quantity and structure, the first components and the second components have a common center and are all in a fan-shaped structure, the first components and the second components are alternately distributed, and the first components and the second components equally divide the bi-component polyester fiber structure.
Furthermore, the number of the A area and the B area are the same, the structures are the same, the A area and the B area have the common circle center, the A area and the B area are in a fan-shaped structure and are alternately distributed, and the temperature of the A area is not higher than that of the B area.
Further, the first component is low-temperature polyester fiber, the second component is high-temperature conductive polyester fiber, the temperature of the area A is 250-280 ℃, and the temperature of the area B is 280-290 ℃.
Further, the low-melting-temperature material adopts a low-temperature polyester fiber slice, the high-melting-temperature material adopts a high-temperature conductive polyester fiber slice, and the volume ratio of the low-melting-temperature material to the high-melting-temperature material is 1:1.
Further, the high-temperature conductive polyester fiber slice is a conductive polyester slice prepared from one of carbon black, carbon nano tube and graphene or a polyester slice containing a conductive component of a metal compound, wherein the metal compound is one of tin, zinc, titanium, antimony, silver, copper and nickel series compounds.
The invention also discloses a preparation method of the bicomponent polyester fiber with high and low temperature melting temperature, which comprises the following steps:
uniformly feeding the materials with low melting temperature into a plurality of A areas of a screw extruder in an equal amount, uniformly feeding the materials with high melting temperature into a plurality of B areas of the screw extruder in an equal amount, arranging the A areas and the B areas according to a certain rule, regulating the temperatures of the A areas and the B areas, and co-extruding the materials with low melting temperature and the materials with high melting temperature to obtain the required bicomponent polyester fiber with high and low melting temperature, wherein the volume ratio of the materials with low melting temperature to the materials with high melting temperature is 1:1.
Further, the number of the A area and the B area are the same, the structures are the same, the A area and the B area have the common circle center, the A area and the B area are in a fan-shaped structure and are alternately distributed, the temperature of the A area is regulated to be 250-280 ℃, and the temperature of the B area is regulated to be 280-290 ℃.
The invention also discloses application of the bicomponent polyester fiber with high and low temperature melting temperature in preparation of the self-conductive oil liquid filtering material.
Further, the self-conductive oil filtering material is prepared by mixing the bicomponent polyester fiber having a high and low temperature melting temperature as described above with glass fiber.
Compared with the prior art, the invention has the beneficial effects that:
the invention also discloses a bicomponent polyester fiber with high and low temperature melting temperature and a preparation method and application thereof, wherein the bicomponent polyester fiber has conductivity, the bicomponent polyester fiber is obtained by feeding a material with low melting temperature and a material with high melting temperature into an A area and a B area of a screw extruder respectively and then carrying out coextrusion, the A area and the B area are arranged according to a certain rule (preferably distributed alternately), at least one of the material with low melting temperature and the material with high melting temperature has conductivity, the melting temperature of the material with low melting temperature is lower than the melting temperature of the material with high melting temperature, and the material with low melting temperature is melted before the material with high melting temperature. The invention adopts two kinds of polyester fibers with high and low temperature melting temperatures to prepare the conductive special-shaped bi-component polyester fiber with high and low temperature melting temperatures, the polyester fiber can adapt to the gradual heating process in the preparation process of the self-conductive oil liquid filtering filter material in the application process, in the low temperature processing process, the low melting temperature material is melted first, other fibers of the filter material and the polyester fiber can be bonded, the high melting temperature material begins to melt along with the gradual temperature rise, the other fibers of the filter material can be fully bonded with the polyester fiber, the other fibers of the filter material are fully bonded to the polyester fiber, the uniform distribution of the fibers in the filter material is greatly improved, the surface resistivity of the filter material is greatly reduced, the conductivity is greatly improved, and the voltage caused by charge accumulation in the use process of the filter material can be reduced, so that the breakdown of the filter material is avoided.
Drawings
Fig. 1 is a structural diagram of embodiment 1;
FIG. 2 is a schematic diagram of example 1;
fig. 3 is a structural diagram of embodiment 2.
Detailed Description
The present invention is described in detail below so that advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and unambiguous the scope of the present invention.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In one aspect, the invention discloses a bicomponent polyester fiber with high and low melting temperature, the bicomponent polyester fiber has conductivity, the bicomponent polyester fiber is obtained by feeding a material with low melting temperature and a material with high melting temperature into a plurality of zones A and a plurality of zones B of a screw extruder respectively and then carrying out coextrusion, at least one of the material with low melting temperature and the material with high melting temperature has conductivity, the melting temperature of the material with low melting temperature is lower than the melting temperature of the material with high melting temperature, and the material with low melting temperature is melted before the material with high melting temperature.
The bicomponent polyester fiber comprises a plurality of first components and a plurality of second components, wherein the first components are made by extruding materials with low melting temperature in a zone A, the second components are made by extruding materials with high melting temperature in a zone B, and the first components and the second components are alternately or alternately distributed.
The cross section of the bicomponent polyester fiber is in a round or square structure, and the bicomponent polyester fiber can be flexibly selected according to actual requirements.
As a specific implementation mode, when the cross section of the bi-component polyester fiber is in a circular structure, the first component and the second component have a common center and are in a fan-shaped structure, the first component and the second component are the same in quantity and structure, and the first component and the second component divide the bi-component polyester fiber structure into even-numbered equal parts, such as quarters, six-equal parts, eight-equal parts and the like. The number of the A areas and the B areas used for extruding the first component and the second component are the same, the structures are the same, the sum of the numbers of the A areas and the B areas is an even number, the A areas and the B areas have the common circle center and are all in a fan-shaped structure, the A areas and the B areas are adjacent, one B area is arranged between every two A areas, namely the A areas and the B areas are alternately distributed, the temperature of the A areas is 250-280 ℃, and the temperature of the B areas is 280-290 ℃.
As a specific embodiment, the first component is a low-temperature polyester fiber, the low-melting-temperature material is extruded in the area a, the low-melting-temperature material is a low-temperature polyester fiber slice a, no conductivity is achieved, the second component is a high-temperature conductive polyester fiber, the high-melting-temperature material is extruded in the area B, namely a high-temperature conductive polyester fiber slice B, the high-melting-temperature material has conductivity, the melting temperature of the low-melting-temperature material is 250-280 ℃, the melting temperature of the high-melting-temperature material is 280-290 ℃, the high-temperature conductive polyester fiber slice B can be a polyester slice containing a conductive component of a metal compound, and the high-temperature conductive polyester fiber slice can also be a conductive polyester slice made of carbon black, carbon nano tubes or graphene, wherein the metal compound is one of tin, zinc, titanium, antimony, silver, copper, nickel series compounds.
On the other hand, the invention also discloses a preparation method of the bicomponent polyester fiber with high and low temperature melting temperature, which comprises the following steps:
uniformly feeding the materials with low melting temperature into a plurality of A areas of a screw extruder in an equal amount, uniformly feeding the materials with high melting temperature into a plurality of B areas of the screw extruder in an equal amount, wherein the volume ratio of the materials with low melting temperature to the materials with high melting temperature is 1:1, regulating the temperature of the A area to 250-280 ℃, regulating the temperature of the B area to 280-290 ℃, and co-extruding the materials with low melting temperature and the materials with high melting temperature to obtain the required bicomponent polyester fiber with high and low melting temperature.
The invention also discloses a self-conductive oil liquid filtering material which is prepared by mixing the bi-component polyester fiber with high and low temperature melting temperature with glass fiber and has conductivity.
Example 1
As shown in figures 1-2, a low-temperature polyester fiber slice A and a high-temperature conductive polyester fiber slice B with the volume ratio of 1:1 are respectively fed into an A area and a B area of a screw extruder, the screw extruder is provided with four extrusion heads, wherein two extrusion heads positioned on the diagonal line are the A area, the other two extrusion heads are the B area, the A area in figure 1 is the low-temperature control area of the extrusion heads, the B area is the high-temperature control area of the extrusion heads, the straight line represents glass fibers, the A area and the B area are adjacent, one B area is arranged between every two A areas, the temperature of the A area is 250-280 ℃, the temperature of the B area is 280-290 ℃, conductive bi-component polyester fibers with high and low-temperature melting temperatures are extruded by the screw extruder at one time by controlling the extrusion temperature, and the specific resistance of the fibers is 107 Ω & cm.
The conductive bi-component polyester fiber with high and low temperature melting temperature is mixed with glass fiber to prepare the self-conductive oil liquid filtering material with the weight of 80 g/square meter, and the glass fiber adopts KE0791 glass fiber provided by New year (Suzhou) special materials Co.
Example 2
As shown in FIG. 3, a low-temperature polyester chip A and a high-temperature conductive polyester chip B with the volume ratio of 1:1 are respectively fed into an A area and a B area of a screw extruder, three areas are respectively arranged, the A area and the B area are identical in structure, the A area and the B area are adjacent, one B area is arranged between every two areas A, the temperature of the A area is 250-280 ℃, the temperature of the B area is 280-290 ℃, conductive bi-component polyester fibers with high and low temperature melting temperatures are extruded from the screw extruder at one time by controlling the extrusion temperature, and the specific resistance is 100 omega cm.
The conductive bi-component polyester fiber with high and low temperature melting temperature is mixed with glass fiber to prepare the self-conductive oil liquid filtering material with the weight of 80 g/square meter, and the glass fiber adopts KE0791 glass fiber provided by New year (Suzhou) special materials Co.
Example 1 was followed.
Comparative example 1
A filter material of 80 g/square meter was prepared by mixing a 10mm long, 2.0tex bicomponent polyester fiber (supplied by ADVANSA, germany) with glass fiber (model KE0791 glass fiber supplied by New York (St.) Special materials Co., ltd.).
The materials obtained in examples 1-2 and comparative example 1 were subjected to mechanical and electrical properties, respectively, and the tensile strength of the filter material obtained in comparative example 1 was found to be 1.5kN/m, and the surface resistivity was found to be 1.3 x 10 10 Omega cm, the tensile strength of the self-conductive oil filtering material of the example 1 is 1.7kN/m, the tensile strength is improved by 13.3% compared with the comparative example 1, the resistivity is 150 omega cm, the conductivity is greatly improved compared with the comparative example 1, the tensile strength of the self-conductive oil filtering material of the example 2 is 1.7kN/m, the tensile strength is improved by 13.3% compared with the comparative example 1, the resistivity is 140 omega cm, and the conductivity is higher than the comparative example1 is greatly improved. The reason why examples 1-2 are significantly different from comparative example 1 in resistivity is that the materials obtained in examples 1-2 are changed from insulators to conductors, and have conductivity such that the surface resistivity is reduced by an order of magnitude.
Parts or structures of the present invention, which are not specifically described, may be existing technologies or existing products, and are not described herein.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.

Claims (3)

1. The application of the bicomponent polyester fiber with high and low temperature melting temperature in preparing the self-conductive oil liquid filtering filter material is characterized in that the self-conductive oil liquid filtering filter material is prepared by mixing bicomponent polyester fiber with high and low temperature melting temperature with glass fiber, the bicomponent polyester fiber has conductivity, the cross section of the bicomponent polyester fiber is in a circular structure, the bicomponent polyester fiber is obtained by feeding a low temperature polyester fiber slice A and a high temperature conductive polyester fiber slice B into an A area and a B area of a screw extruder respectively and then carrying out coextrusion, the low temperature polyester fiber slice A has no conductivity, the high temperature conductive polyester fiber slice B has conductivity, and the volume ratio of the low temperature polyester fiber slice A to the high temperature conductive polyester fiber slice B is 1:1;
the double-component polyester fiber comprises a plurality of first components and a plurality of second components, wherein the first components are prepared by extruding a low-temperature polyester fiber slice A through a zone A, the second components are prepared by extruding a high-temperature conductive polyester fiber slice B through a zone B, the first components and the second components are identical in quantity and structure, the first components and the second components have common circle centers and are all in a fan-shaped structure, the first components and the second components are alternately arranged, and the first components and the second components equally divide the double-component polyester fiber structure;
the temperature of the zone A is 250-280 ℃, and the temperature of the zone B is 280-290 ℃;
the double-component polyester fiber is suitable for a process of gradually heating in the preparation process of the self-conductive oil liquid filtration filter material in the application process, in the low-temperature processing process, the material with low melting temperature is melted first, other fibers of the filter material and the polyester fiber can be bonded, along with the gradual temperature rise, the material with high melting temperature begins to melt, the other fibers of the filter material can be fully bonded with the polyester fiber, the other fibers of the filter material are fully bonded to the polyester fiber, the uniform distribution of the double-component polyester fiber in the filter material is greatly improved, the surface resistivity of the filter material is greatly reduced, the conductivity is greatly improved, and then the voltage caused by charge accumulation in the use process of the filter material can be reduced, so that the filter material breakdown is avoided.
2. The application of the bicomponent polyester fiber with high and low temperature melting temperature in the preparation of the self-conductive oil filtering filter material according to claim 1, wherein the number of the A area and the B area are the same and the structure is the same, the A area and the B area have the common circle center, the A area and the B area are in a fan-shaped structure and are alternately distributed, and the temperature of the A area is not higher than the temperature of the B area.
3. The application of the bi-component polyester fiber with high and low temperature melting temperature in preparing the self-conductive oil liquid filtering filter material according to claim 1, wherein the high-temperature conductive polyester fiber slice is a polyester slice containing a metal compound conductive component or a conductive polyester slice made of one of carbon black, carbon nano tubes and graphene, and the metal compound is one of tin, zinc, titanium, antimony, silver, copper and nickel series compounds.
CN202210856971.0A 2022-07-20 2022-07-20 Bicomponent polyester fiber with high and low temperature melting temperature, preparation method and application Active CN115012068B (en)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
GB1391262A (en) * 1971-06-22 1975-04-16 Ici Ltd Conductive bicomponent fibres
WO1998014647A1 (en) * 1996-09-30 1998-04-09 Hoechst Celanese Corporation Electrically conductive heterofil
WO2001041898A1 (en) * 1999-12-08 2001-06-14 Kimberly-Clark Worldwide, Inc. A fine particle filtration medium including an airlaid composite
CN1450211A (en) * 2002-04-05 2003-10-22 艾特华技术有限公司 Improved binder fiber and nonwoven web
CN101302659A (en) * 2008-05-09 2008-11-12 桐乡市健民过滤材料有限公司 Bi-component polyester coarse fibre, filter material and preparation thereof
JP2009114613A (en) * 2007-10-19 2009-05-28 Es Fibervisions Co Ltd Hot-melt adhesive polyester conjugate fiber
CN107354534A (en) * 2017-08-23 2017-11-17 厦门翔鹭化纤股份有限公司 A kind of preparation method of conductive polyester fiber

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Publication number Priority date Publication date Assignee Title
US20050039836A1 (en) * 1999-09-03 2005-02-24 Dugan Jeffrey S. Multi-component fibers, fiber-containing materials made from multi-component fibers and methods of making the fiber-containing materials
AU2005233518A1 (en) * 2004-03-23 2005-10-27 Ascend Performance Materials Llc Bi-component electrically conductive drawn polyester fiber and method for making same
US20180223454A1 (en) * 2017-02-07 2018-08-09 Earth Renewable Technologies Bicomponent fiber additive delivery composition

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1391262A (en) * 1971-06-22 1975-04-16 Ici Ltd Conductive bicomponent fibres
WO1998014647A1 (en) * 1996-09-30 1998-04-09 Hoechst Celanese Corporation Electrically conductive heterofil
WO2001041898A1 (en) * 1999-12-08 2001-06-14 Kimberly-Clark Worldwide, Inc. A fine particle filtration medium including an airlaid composite
CN1450211A (en) * 2002-04-05 2003-10-22 艾特华技术有限公司 Improved binder fiber and nonwoven web
JP2009114613A (en) * 2007-10-19 2009-05-28 Es Fibervisions Co Ltd Hot-melt adhesive polyester conjugate fiber
CN101302659A (en) * 2008-05-09 2008-11-12 桐乡市健民过滤材料有限公司 Bi-component polyester coarse fibre, filter material and preparation thereof
CN107354534A (en) * 2017-08-23 2017-11-17 厦门翔鹭化纤股份有限公司 A kind of preparation method of conductive polyester fiber

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