CN114460703A - High-strength optical cable reinforced core and manufacturing method thereof - Google Patents

High-strength optical cable reinforced core and manufacturing method thereof Download PDF

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Publication number
CN114460703A
CN114460703A CN202210258317.XA CN202210258317A CN114460703A CN 114460703 A CN114460703 A CN 114460703A CN 202210258317 A CN202210258317 A CN 202210258317A CN 114460703 A CN114460703 A CN 114460703A
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China
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glass fiber
layer
epoxy resin
optical cable
modified
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Pending
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CN202210258317.XA
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Chinese (zh)
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沈国忠
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Hangzhou Juli Insulation Co ltd
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Hangzhou Juli Insulation Co ltd
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Priority to CN202210258317.XA priority Critical patent/CN114460703A/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • G02B6/4432Protective covering with fibre reinforcements
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10Coating
    • C03C25/48Coating with two or more coatings having different compositions
    • C03C25/50Coatings containing organic materials only
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • G02B6/4486Protective covering

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ropes Or Cables (AREA)

Abstract

The invention relates to a high-strength optical cable reinforcing core and a manufacturing method thereof.A plurality of glass fiber yarns are immersed in a modified epoxy resin liquid tank under the premise of tensioning by a rope twisting machine and twisted into glass fiber ropes; 2) the rigid epoxy resin glass fiber rope surface is coated and dried by the modified EAA layer or the PE layer to form the double-layer optical cable reinforced core. The advantages are that: the defects of hardness, brittleness and poor toughness of the optical cable reinforced core are fundamentally overcome, and the tensile strength of the optical cable reinforced core is improved; secondly, the core wire in the optical cable reinforced core is designed to be in a rope-shaped structure, so that the tensile strength of the core wire is enhanced by multiple times, and the consumption of the glass fiber is reduced by more than 35%; and thirdly, the modified EAA layer or the PE layer is used as a coating layer of the optical cable reinforced core, so that the optical fiber lines around the optical cable reinforced core are protected, and the phenomenon of hard touch between the modified EAA layer and the PE layer is avoided.

Description

High-strength optical cable reinforced core and manufacturing method thereof
Technical Field
The invention relates to a high-strength optical cable reinforced core which has high tensile strength and small elongation percentage and can avoid damage to an optical cable and a manufacturing method thereof, belonging to the field of optical cable reinforced core manufacturing.
Background
CN109749218B, entitled glass fiber optical cable reinforced core, which comprises glass fibers and glue solution coated on the glass fibers, wherein the glue solution is prepared from the following raw materials in percentage by mass: 50-53% of EEA, 38-40% of EVA, 5% of silane coupling agent, 1% of curing stiffening agent and the balance of release agent; the silane coupling agent is silane containing organic functional groups of ethylene, acrylic acid or amine groups; the preparation method of the glass fiber optical cable reinforced core comprises the following steps: step 1, pouring EEA, EVA, a silane coupling agent, a curing stiffening agent and a release agent into a high-temperature melting box to melt to obtain glue solution; step 2, adding the glue solution into a first coating mold and a second coating mold, and controlling the temperature at 240-260 ℃; step 3, extruding the glass fiber from the inlet of the first coating die, drawing the glass fiber from the outlet end after coating, and drying the glass fiber; step 4, winding the dried semi-finished product at a winding speed of 4 m/min; step 5, extruding the semi-finished product from an inlet of a second coating die, drawing out the semi-finished product from an outlet end after soaking, and drying the semi-finished product; and 6, winding the finished product at the winding speed of 10 m/min. The method has the following defects: firstly, the aramid fiber is only used as a reinforcing rib with ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance and light weight, and the cost of the manufactured optical cable reinforcing core is high under the condition of the same price; secondly, the manufactured optical cable reinforced core is hard, brittle and poor in plasticity, and is easy to break in the using process, so that the optical cable is damaged.
Disclosure of Invention
The design purpose is as follows: the defects in the background art are avoided, and the high-strength optical cable reinforced core which has high tensile strength and small elongation percentage and can avoid damage to an optical cable and the manufacturing method are designed.
The design scheme is as follows: the design purpose is realized. The invention has the structural design that: 1. the invention relates to a design that a plurality of glass fiber yarns are tensioned and woven into a glass fiber yarn rope in modified epoxy resin liquid and then cured, which is one of the technical characteristics of the invention. The purpose of this design is: the glass fiber yarn is made up by using glass ball or waste glass as raw material through the processes of high-temp. melting, drawing, winding and weaving, etc. and finally forming various products, the diameter of glass fiber monofilament is several micrometers to twenty-several-meter micrometers, and is equivalent to 1/20-1/5 of a hair, and every bundle of fiber precursor is formed from several hundreds of monofilaments, and can be used for producing various hair-like products. If the reinforcing rib is used as the reinforcing rib of the optical cable reinforcing core, the required amount is large, the rigidity of the manufactured optical cable reinforcing core is insufficient, the diameter is large, and the tensile strength of the manufactured optical cable cannot be well improved. The invention weaves a plurality of glass fiber yarns into a rope under the condition of tension, thereby not only improving the tensile strength, but also reducing the elongation of the plurality of glass fiber yarns to the minimum, meanwhile, because the plurality of glass fiber yarns are weaved and formed by a rope twisting machine after being immersed into the modified epoxy resin liquid to be forcibly pulled (in a tension state), the rigidity of the formed modified epoxy resin fiber rope is improved by more than one time, the toughness is also improved, more importantly, the elongation is reduced to be approximate zero, which is far beyond the required tensile strength of the optical cable, and the safety of the optical cable in use is ensured. 2. The design that the cured modified epoxy resin glass fiber rope is coated by the modified EAA or PE is the second technical characteristic of the invention. The purpose of this design is: the ethylene-acrylic acid copolymer is a material with thermoplasticity and extremely high cohesiveness, forms firm adhesion with the modified epoxy resin, has good toughness and can play a good role in protecting the coated optical fiber wire.
The technical scheme 1: the utility model provides a core is strengthened to high strength optical cable, includes that optical cable strengthens the core, the heart yearn in the core is many glass fiber silks, many glass fiber silk stretch-draw and in modified epoxy liquid be woven into glass fiber silk rope postcure, modified epoxy glass fiber silk rope after the curing is by modified EAA cladding or by PE cladding.
The technical scheme 2 is as follows: a method for manufacturing a high-strength optical cable reinforcing core comprises the following steps of 1) immersing a plurality of glass fiber yarns in a modified epoxy resin liquid tank under the premise of tensioning by a rope twisting machine, twisting the immersed glass fiber yarns into glass fiber ropes, and drying the glass fiber ropes dipped with the modified epoxy resin by an inner aperture hole forming die to form rigid epoxy resin glass fiber ropes; 2) the surface of the rigid epoxy resin glass fiber rope is coated and dried by the modified EAA layer or the PE layer to form the double-layer optical cable reinforced core.
Technical scheme 3: a method for manufacturing a high-strength optical cable reinforcing core comprises the following steps of 1) immersing a plurality of glass fiber yarns in a modified epoxy resin liquid tank under the premise of tensioning by a rope twisting machine, twisting the immersed glass fiber yarns into glass fiber ropes, and drying the glass fiber ropes dipped with the modified epoxy resin by an inner aperture hole forming die to form rigid epoxy resin glass fiber ropes; 2) the surface of the rigid epoxy resin glass fiber rope is coated by the modified epoxy resin layer again to form a single-property double-layer epoxy resin glass fiber rope; 3) the surface of the single double-layer epoxy resin glass fiber rope is coated and dried by the modified EAA layer or the PE layer to form the double three-layer optical cable reinforced core.
Compared with the background technology, the invention fundamentally solves the defects of hard, crisp and poor toughness of the optical cable reinforced core, improves the tensile strength of the optical cable reinforced core and ensures the application safety of the optical cable; secondly, the core wire in the optical cable reinforced core is designed to be in a rope-shaped structure, so that the elongation of the optical cable reinforced core is reduced, the tensile strength of the core wire is enhanced by multiple times, the using amount of glass fiber is reduced by more than 35%, the manufacturing cost is reduced, and the diameter of the core wire is reduced; and thirdly, the modified EAA layer or the PE layer is used as a coating layer of the optical cable reinforced core, so that the tensile resistance is improved, the core wire is prevented from being broken and embrittled in a strong-pulling state, the optical fiber wires around the optical cable reinforced core wire are protected, and the phenomenon of hard touch between the core wire and the optical cable reinforced core wire is avoided.
Drawings
FIG. 1 is a first schematic view of the end face structure of the strength core of the high strength optical cable.
Fig. 2 is a schematic view of an end face structure of a reinforcing core of a high-strength optical cable.
FIG. 3 is a first flow chart of the process for making the strength core of the high-strength optical cable.
FIG. 4 is a second flow chart of the manufacturing process of the high strength optical cable strength member.
Detailed Description
Example 1: reference is made to figure 1. The utility model provides a core is strengthened to high strength optical cable, strengthens the core including the optical cable, the heart yearn in the core is many glass fiber silk, many glass fiber silk stretch-draw and in modified epoxy liquid be woven into glass fiber silk rope 1 postcure, modified epoxy glass fiber silk rope 1 after the solidification is by modified EA layer cladding or by PE cladding 3. The glass fiber yarns in the cured modified epoxy resin glass fiber rope 1 are bonded with the glass fiber yarns into a whole by the modified epoxy resin 2. The hardness of the modified EAA layer or PE layer is less than that of the modified epoxy resin layer.
Example 2: reference is made to figure 2. In addition to example 1, the cured glass fiber cord 1 is coated with a modified epoxy layer 4, and the modified epoxy layer is coated with a modified EAA layer or coated with a PE layer 4.
Modified epoxy resin: toughening with liquid carboxyl-terminated nitrile butadiene rubber (CTBN): the addition amount is 10.5% to 12.5%, wherein the acrylonitrile content of CTBN is 18% to 30%, and 30% of silicon dioxide is added to avoid the strength reduction after adding CTBN, and the preparation thereof is the prior art, and will not be described herein. The modified EAA layer or PE layer is prior art and will not be described here.
Example 3: reference is made to figure 3. A method for manufacturing a high-strength optical cable reinforcing core comprises the following steps of 1) immersing a plurality of glass fiber yarns 01 in a modified epoxy resin liquid tank 02 under the premise of tensioning by a rope twisting machine 05, twisting the glass fiber yarns into glass fiber ropes, and drying the glass fiber ropes dipped and coated with modified epoxy resin by an inner aperture eye forming die 03 and a drying tunnel 04 to form rigid epoxy resin glass fiber ropes; 2) the surface of the rigid epoxy resin glass fiber rope is coated and dried by the modified EAA liquid or the PE liquid 07 to form the double-layer optical cable reinforced core 09. The modified EAA layer or the PE layer plays a role in protecting the optical fiber wires (lines) wrapped around the modified EAA layer or the PE layer, and the phenomenon that the optical fiber wires (lines) and the optical cable reinforcing core are hard to touch is avoided.
Example 4: reference is made to figure 4. On the basis of the embodiment 2, a plurality of glass fiber yarns 01 are immersed in the modified epoxy resin liquid tank 02 under the condition that the rope rolling machine 05 is tensioned and then are rolled into a glass fiber rope, and the glass fiber rope dipped and coated with the modified epoxy resin is dried by the inner aperture hole forming die 03 and the drying tunnel 04 to form a rigid epoxy resin glass fiber rope; 2) the surface of the rigid epoxy resin glass fiber rope is coated by the modified epoxy resin liquid 06 in the modified epoxy resin liquid tank again to form a single-property double-layer epoxy resin glass fiber rope; 3) the single double-layer epoxy resin glass fiber rope surface is coated and dried by the modified EAA liquid or the modified PE liquid 07 in the modified EAA liquid or the PE liquid tank to form the double-layer optical cable reinforced core 08 which is used for manufacturing special optical cables.
Each glass fiber yarn pay-off installation tension sensor goes into the thigh with the uniform force, and each thigh is laid line sensor uniform force and is gone into the rope, reaches every glass fiber yarn atress even, plays the atress maximize.
Considering the rigidity of the epoxy resin material, the flexibility of the EAA material needs to be controlled by a natural shaping process for 48-72 hours.
The plurality of glass fiber yarns are manufactured by a rope twisting machine within the temperature range of the heated softening point (the softening point is 500-750 ℃), and the process of manufacturing the rope is the prior art and is not described in detail here.
It is to be understood that: although the above embodiments have described the design idea of the present invention in more detail, these descriptions are only simple descriptions of the design idea of the present invention, and are not limitations of the design idea of the present invention, and any combination, addition, or modification without departing from the design idea of the present invention falls within the scope of the present invention.

Claims (6)

1. The utility model provides a core is strengthened to high strength optical cable, includes the core is strengthened to the optical cable, characterized by: the core wire in the optical cable reinforcing core is a plurality of glass fiber yarns, the glass fiber yarns are tensioned and woven into glass fiber ropes in modified epoxy resin liquid to be cured, and the cured modified epoxy resin glass fiber ropes are coated by the modified EAA layer or the PE coating layer.
2. The high strength optical cable strength member of claim 1, wherein: the cured glass fiber rope is coated by the modified epoxy resin layer, and the modified epoxy resin layer is coated by the modified EAA layer or the PE layer.
3. The high strength optical cable strength member of claim 1, wherein: the glass fiber yarns in the cured modified epoxy resin glass fiber rope are bonded with the glass fiber yarns into a whole by the modified epoxy resin.
4. The high strength optical cable strength member of claim 1, wherein: the hardness of the modified EAA layer or PE layer is less than that of the modified epoxy resin layer.
5. A manufacturing method of a high-strength optical cable reinforced core is characterized by comprising the following steps: 1) a plurality of glass fiber yarns are immersed in the modified epoxy resin liquid tank under the premise of tensioning by a rope rolling machine and are twisted into a glass fiber rope, and the glass fiber rope dipped with the modified epoxy resin is dried by an inner aperture hole forming die to form a rigid epoxy resin glass fiber rope; 2) the surface of the rigid epoxy resin glass fiber rope is coated and dried by the modified EAA layer or the PE layer to form the double-layer optical cable reinforced core.
6. A manufacturing method of a high-strength optical cable reinforced core is characterized by comprising the following steps: 1) a plurality of glass fiber yarns are immersed in the modified epoxy resin liquid tank under the premise of tensioning by a rope rolling machine and are twisted into a glass fiber rope, and the glass fiber rope dipped with the modified epoxy resin is dried by an inner aperture hole forming die to form a rigid epoxy resin glass fiber rope; 2) the surface of the rigid epoxy resin glass fiber rope is coated by the modified epoxy resin layer again to form a single-property double-layer epoxy resin glass fiber rope; 3) the surface of the single double-layer epoxy resin glass fiber rope is coated and dried by the modified EAA layer or the PE layer to form the double three-layer optical cable reinforced core.
CN202210258317.XA 2022-03-16 2022-03-16 High-strength optical cable reinforced core and manufacturing method thereof Pending CN114460703A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116594127A (en) * 2023-04-28 2023-08-15 宏安集团有限公司 Indoor and outdoor self-supporting armored butterfly-shaped lead-in optical cable

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09101438A (en) * 1995-10-04 1997-04-15 Nippon Telegr & Teleph Corp <Ntt> Optical cable
JP2004070042A (en) * 2002-08-07 2004-03-04 Sumitomo Electric Ind Ltd Optical cable and method for manufacturing optical cable
CN201583708U (en) * 2009-10-13 2010-09-15 仪征市众志复合材料制品有限公司 Mixed fiber reinforced core of optical cable
CN102508345A (en) * 2011-11-05 2012-06-20 河北华强科技开发有限公司 Reinforced core of communication optical cable and manufacturing method as well as special device for manufacturing reinforced core
CN208421331U (en) * 2018-05-15 2019-01-22 浙江中天电线电缆有限公司 A kind of optical fiber
CN112291508A (en) * 2019-11-11 2021-01-29 中国人民解放军海军工程大学 Intelligent underwater security and protection arresting network system and intrusion early warning method
CN218240489U (en) * 2022-03-16 2023-01-06 杭州巨力绝缘材料有限公司 High-strength optical cable reinforced core

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09101438A (en) * 1995-10-04 1997-04-15 Nippon Telegr & Teleph Corp <Ntt> Optical cable
JP2004070042A (en) * 2002-08-07 2004-03-04 Sumitomo Electric Ind Ltd Optical cable and method for manufacturing optical cable
CN201583708U (en) * 2009-10-13 2010-09-15 仪征市众志复合材料制品有限公司 Mixed fiber reinforced core of optical cable
CN102508345A (en) * 2011-11-05 2012-06-20 河北华强科技开发有限公司 Reinforced core of communication optical cable and manufacturing method as well as special device for manufacturing reinforced core
CN208421331U (en) * 2018-05-15 2019-01-22 浙江中天电线电缆有限公司 A kind of optical fiber
CN112291508A (en) * 2019-11-11 2021-01-29 中国人民解放军海军工程大学 Intelligent underwater security and protection arresting network system and intrusion early warning method
CN218240489U (en) * 2022-03-16 2023-01-06 杭州巨力绝缘材料有限公司 High-strength optical cable reinforced core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116594127A (en) * 2023-04-28 2023-08-15 宏安集团有限公司 Indoor and outdoor self-supporting armored butterfly-shaped lead-in optical cable
CN116594127B (en) * 2023-04-28 2024-04-26 宏安集团有限公司 Indoor and outdoor self-supporting armored butterfly-shaped lead-in optical cable

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