CN113862850A - Production process for preparing yarn by utilizing PBO novel fiber - Google Patents

Production process for preparing yarn by utilizing PBO novel fiber Download PDF

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Publication number
CN113862850A
CN113862850A CN202111382804.9A CN202111382804A CN113862850A CN 113862850 A CN113862850 A CN 113862850A CN 202111382804 A CN202111382804 A CN 202111382804A CN 113862850 A CN113862850 A CN 113862850A
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China
Prior art keywords
pbo
roving
frame
filaments
novel
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CN202111382804.9A
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Chinese (zh)
Inventor
李原
周宏伟
杨仕成
张冶
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Chongqing Textile Industry Research Institute Co ltd
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Chongqing Textile Industry Research Institute Co ltd
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Priority to CN202111382804.9A priority Critical patent/CN113862850A/en
Publication of CN113862850A publication Critical patent/CN113862850A/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/10—Tension devices
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/14—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength

Abstract

The invention discloses a production process for preparing yarns by utilizing PBO novel fibers, which comprises the following steps: s1: breaking the PBO novel fiber into filaments on a breaking machine, wherein the length of the filaments is 110-120 mm; s2: carrying out 1-pass drawing frame and 2-pass drawing frame on the stretch-broken filaments; s3: roving: carrying out roving by using a roving machine to obtain roving; s4: spinning: and (5) carrying out fine spinning by using a spinning frame to obtain spun yarn. The production process for preparing the yarns by utilizing the PBO novel fibers has the advantages of less hairiness and high strength.

Description

Production process for preparing yarn by utilizing PBO novel fiber
Technical Field
The invention relates to the technical field of fiber production and processing, in particular to a production process for preparing yarns by utilizing PBO novel fibers.
Background
PBO fiber is short for poly-p-phenylene benzobisoxazole fiber, is a reinforcing material for composite materials developed for developing aerospace industry in the United states in the 80 th century, is one member of polyamide family with heterocyclic aromatic series with the greatest development prospect, and is known as 21 st century super fiber.
According to the Dongyang textile, the strength of the high-end PBO fiber product is 5.8GPa (5.2 GPa is reported in Germany), the modulus is 280GPa, and the high-end PBO fiber product is the highest in the existing chemical fiber; the heat resistance temperature reaches 600 ℃, the limiting oxygen index is 68, the fiber does not burn and shrink in flame, and the heat resistance and the flame retardancy are higher than those of any other organic fiber. The method is mainly used for heat-resistant industrial textiles and fiber reinforced materials.
Performance comparison of PBO with other high performance fibers:
Figure BDA0003366211670000011
it can be seen that the strength, modulus, heat resistance and flame resistance of PBO fibers, particularly PBO fibers, not only outperform steel fibers, but also outperform carbon fibers. In addition, PBO fibers are excellent in impact resistance, abrasion resistance and dimensional stability, and are lightweight and flexible, and therefore are extremely desirable as textile materials.
PBO as 21 st century super performance fiber has excellent physical and mechanical properties and chemical properties, the strength and modulus of the PBO are 2 times of those of Kevlar (Kevlar) fiber, the PBO also has the heat-resistant and flame-retardant properties of meta-aramid fiber, and the physical and chemical properties completely exceed those of Kevlar fiber which is in the leading position in the field of high performance fiber. A PBO filament of 1 mm diameter can lift a weight of 450 kg with a strength more than 10 times that of the steel wire fibre.
The PBO fiber is mainly characterized by good heat resistance, high strength and modulus, so the PBO fiber has wide application.
The PBO fiber filament can be used as a reinforcing material for rubber products such as tires, adhesive tapes (conveying belts), rubber tubes and the like; reinforcing materials for various plastics, concrete, and the like; a reinforcing component for ballistic missiles and composites; a tension member of the fiber optic cable and a protective film of the cable; reinforcing fibers for various cords such as electric heating cord and earphone cord; high tension materials such as ropes and cables; a heat-resistant filter material for high-temperature filtration; missile and bullet protection equipment, bullet-proof vests, bullet-proof helmets and high-performance sailing clothes; sports equipment such as tennis, yacht, racing boat and the like; high-grade loudspeaker vibrating plate, new communication material; aerospace materials, and the like.
However, how to provide a production process for preparing yarns by utilizing novel PBO fibers with less hairiness and high strength becomes an urgent problem to be solved.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved by the patent application is how to provide a production process for preparing yarns by utilizing novel PBO fibers with less hairiness and high strength.
In order to solve the technical problems, the invention adopts the following technical scheme:
a production process for preparing yarns by utilizing PBO novel fibers comprises the following steps:
s1: breaking the PBO novel fiber into filaments on a breaking machine, wherein the length of the filaments is 110-120 mm;
s2: carrying out 1-pass drawing frame and 2-pass drawing frame on the stretch-broken filaments;
s3: roving: carrying out roving by using a roving machine to obtain roving;
s4: spinning: and (5) carrying out fine spinning by using a spinning frame to obtain spun yarn.
Wherein the fiber length of the stretch-breaking machine is 110-120mm, the linear speed of the front roller is 27 m/min, and the pressure of the leather roller is 6 MPa.
Wherein, before the stretch breaking machine, PBO novel fiber electrostatic agent is sprayed with 20 kg of electrostatic agent in an amount of 100 kg of fiber, wherein the spraying concentration of the electrostatic agent is 4%.
Wherein, 1 draw frame and 2 draw frames adopt: the linear speed of the front roller is 40 m/min, and the density of the card wire is 7 pins/h.
The roving frame adopts a CZ411 type roving frame, the rotating speed of a front roller is 155 r/m, and the roving twist is adjusted to 10 r/m.
The spinning machine adopts an FZ501 spinning machine, the frequency of a frequency converter is 45HZ, the front middle is 135 mm, and the middle rear is 130 mm.
The PBO filament tensioning device comprises a first ceramic ring, a second ceramic ring, a spring tension disc and a pre-tensioning device, wherein the pre-tensioning device is used for placing a plurality of PBO filaments on a rear frame of the device, each PBO filament bundle is respectively pulled into an independent spring tension disc through the first ceramic ring and the second ceramic ring, the tension of the spring tension disc is adjusted, and the PBO filaments are intensively pulled out through the third ceramic ring and enter a breaking machine.
In conclusion, the production process for preparing the yarns by utilizing the PBO novel fibers has the advantages of less hairiness and high strength.
Drawings
Fig. 1 is a schematic structural diagram of a pre-tensioning device disclosed by the invention.
Fig. 2 is a top view of fig. 1.
Detailed Description
The first embodiment is as follows:
a production process for preparing yarns by utilizing PBO novel fibers is carried out by adopting long-spinning hemp spinning equipment and comprises the following steps:
s1: breaking the PBO novel fiber into filaments on a breaking machine, wherein the length of the filaments is 110-120 mm;
s2: carrying out 1-pass drawing frame and 2-pass drawing frame on the stretch-broken filaments;
s3: roving: carrying out roving by using a roving machine to obtain roving;
s4: spinning: and (5) carrying out fine spinning by using a spinning frame to obtain spun yarn.
Wherein the fiber length of the stretch-breaking machine is 110-120mm, the linear speed of the front roller is 27 m/min, so as to prevent winding and ensure the strip output quality, and the pressure of the leather roller is 6 MPa.
Wherein, because PBO fibre static is big, very easily twines the leather roller, before the stretch-breaking machine, to PBO novel fibre electrostatic agent, the spraying concentration of electrostatic agent is 4%, and the volume of spraying is 20 kilograms electrostatic agents are sprayed to 100 kilograms fibre. In addition, the PBO novel fiber fed into the back roller of the stretch-breaking machine needs to be added with pretension to ensure that the fiber entering the drafting zone is straightened and parallel, and the stretch-breaking effect is optimal.
Wherein, 1 draw frame and 2 draw frames adopt: the linear speed of the front roller is 40 m/min, and 2 drawing passes are slightly low; when the density of the card wire is 7 wire/hour, the pressure of the leather roller is equivalent to that of other varieties.
The CZ411 type roving frame is adopted by the roving frame, the quality is stable, the rotating speed of a front roller is 155 r/min, when the roving twist is slightly large, the spun yarn twist is not scattered, the roving twist is easy to run at the slubby section, and therefore the lower value of the roving twist is 10 twist/m. The problem of poor forming can be better solved by adopting the bobbin with the edge.
The spinning machine adopts an FZ501 spinning machine, the rotating speed of a front roller is slightly reduced, and the frequency of a frequency converter is adjusted to 45 HZ. The distance is increased, the distance is 135 mm in the front middle and 130 mm in the middle and the rear, the spinning life is good, and the broken ends are few.
As shown in fig. 1-2, the device further comprises a pre-tension device, wherein the pre-tension device is used for placing a plurality of PBO filaments 1 on a rear frame of the device, each PBO filament bundle is respectively pulled into a separate spring tension disc 4 through a first porcelain ring 2 and a second porcelain ring 3, the tension of the spring tension disc is adjusted, and the PBO filaments are intensively pulled out through a third porcelain ring 5 and enter a stretch breaking machine. Because the tension is pre-applied to the PBO filaments, the fibers are straightened and enter a drafting zone of the stretch-breaking machine in parallel, the fibers are not folded and are easy to stretch-break, the stretch-breaking length is better controlled, and the sliver outlet quality is good.
Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims (7)

1. A production process for preparing yarns by utilizing PBO novel fibers is characterized by comprising the following steps:
s1: breaking the PBO novel fiber into filaments on a breaking machine, wherein the length of the filaments is 110-120 mm;
s2: carrying out 1-pass drawing frame and 2-pass drawing frame on the stretch-broken filaments;
s3: roving: carrying out roving by using a roving machine to obtain roving;
s4: spinning: and (5) carrying out fine spinning by using a spinning frame to obtain spun yarn.
2. The process as claimed in claim 1, wherein the fiber length of the stretch-breaking machine is 110-120mm, the linear speed of the front roller is 27 m/min, and the pressure of the leather roller is 6 MPa.
3. The process for preparing yarn from PBO novel fibers as claimed in claim 1, wherein the spraying concentration of the electrostatic agent is 4% and the spraying amount is 20 kg for 100 kg of PBO novel fiber electrostatic agent before the stretch breaking machine.
4. The production process for preparing yarns by using the PBO novel fibers as claimed in claim 1, wherein the 1-pass drawing frame and the 2-pass drawing frame adopt: the linear speed of the front roller is 40 m/min, and the density of the card wire is 7 pins/h.
5. The process for producing yarn from PBO novel fibers as claimed in claim 1, wherein the roving frame is a CZ411 type roving frame, the rotation speed of the front roller is 155 rpm, and the roving twist is adjusted to 10/m.
6. The production process for preparing yarns by utilizing PBO novel fibers as claimed in claim 1, wherein the spinning frame adopts an FZ501 spinning frame, the frequency of a frequency converter is 45HZ, the front middle is 135 mm, and the middle rear is 130 mm.
7. The production process for preparing yarns by using the PBO novel fibers as claimed in claim 1, further comprising a pre-tensioning device, wherein the pre-tensioning device is used for placing a plurality of PBO filaments on a rear frame of the device, each PBO filament bundle is respectively pulled into a separate spring tension disc through a first porcelain ring and a second porcelain ring, the tension of the spring tension disc is adjusted, and the PBO filaments are intensively pulled out through a third porcelain ring and enter a stretch breaker.
CN202111382804.9A 2021-11-22 2021-11-22 Production process for preparing yarn by utilizing PBO novel fiber Pending CN113862850A (en)

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CN104246035A (en) * 2012-04-03 2014-12-24 帝斯曼知识产权资产管理有限公司 Polymeric yarn and method for manufacturing
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CN1561413A (en) * 1999-06-14 2005-01-05 纳幕尔杜邦公司 Stretch break method and product
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CN101711230A (en) * 2007-06-04 2010-05-19 东丽株式会社 Chopped fiber bundle, molding material, and fiber reinforced plastic, and process for producing them
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CN104246035A (en) * 2012-04-03 2014-12-24 帝斯曼知识产权资产管理有限公司 Polymeric yarn and method for manufacturing
CN104120525A (en) * 2014-07-25 2014-10-29 中国纺织科学研究院 Ultra-high molecular weight PE yarn and processing method thereof
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