CN114571752A - Carbon fiber optical cable reinforced core and manufacturing method thereof - Google Patents

Carbon fiber optical cable reinforced core and manufacturing method thereof Download PDF

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Publication number
CN114571752A
CN114571752A CN202210258314.6A CN202210258314A CN114571752A CN 114571752 A CN114571752 A CN 114571752A CN 202210258314 A CN202210258314 A CN 202210258314A CN 114571752 A CN114571752 A CN 114571752A
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CN
China
Prior art keywords
carbon fiber
layer
epoxy resin
rope
optical cable
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Pending
Application number
CN202210258314.6A
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Chinese (zh)
Inventor
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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Application filed by Hangzhou Juli Insulation Co ltd filed Critical Hangzhou Juli Insulation Co ltd
Priority to CN202210258314.6A priority Critical patent/CN114571752A/en
Publication of CN114571752A publication Critical patent/CN114571752A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/50Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/54Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • 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

Abstract

The invention relates to a carbon fiber optical cable reinforcing core and a manufacturing method thereof.A plurality of carbon fiber wires are immersed in a modified epoxy resin liquid tank under the premise of tensioning by a rope rolling machine and are twisted into a carbon fiber wire rope, and the carbon fiber wire rope dipped and coated with modified epoxy resin is dried by an inner aperture hole forming die to form a rigid epoxy resin carbon fiber wire rope; 2) the surface of the rigid epoxy resin carbon fiber wire rope is coated and dried by the modified EAA layer or the PE layer to form the double-layer optical cable reinforcing 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 carbon fiber wires 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

Carbon fiber optical cable reinforced core and manufacturing method thereof
Technical Field
The invention relates to a carbon fiber 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 carbon fiber optical cable reinforced core which has high tensile strength and small elongation rate and can avoid damage to optical cables 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 design that a plurality of carbon fiber wires are tensioned and woven into a carbon fiber wire rope in modified epoxy resin liquid and then cured is one of the technical characteristics of the invention. The purpose of this design is: the carbon fiber yarn made of the special fiber has the characteristics of high temperature resistance, friction resistance, electric conduction resistance, heat conduction resistance, corrosion resistance and the like, and has high strength and modulus along the fiber axis direction because the graphite microcrystal structure is preferentially oriented along the fiber axis. The carbon fiber has low density, high specific strength and high specific modulus, is an excellent reinforcing material, and is a carbon fiber reinforced epoxy resin composite material, the specific strength and the specific modulus of the cable are the highest in the existing engineering materials, and if the cable is used as a reinforcing rib of a reinforced core of the optical cable independently, the requirement is large, the invention weaves a plurality of carbon fiber wires into the rope under the condition of tension, thereby not only improving the tensile strength by times, but also can reduce the elongation of the carbon fiber rope to the minimum, and simultaneously, because a plurality of carbon fiber threads are strongly pulled (in a tensioning state) after being immersed in the modified epoxy resin liquid and are woven and formed by a rope twisting machine, therefore, the rigidity of the formed modified epoxy resin fiber rope is improved by more than several times, the toughness is also improved, more importantly, the elongation is reduced to be approximately zero and far exceeds 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 carbon 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 carbon fiber optical cable, strengthens the core including the optical cable, the heart yearn in the core is many carbon fiber silk, many carbon fiber silk stretch-draw and in modified epoxy liquid be woven into carbon fiber silk rope postcure, modified epoxy carbon fiber silk rope after the solidification is by modified EAA cladding or by PE cladding.
The technical scheme 2 is as follows: a method for manufacturing a carbon fiber optical cable reinforcing core comprises the following steps of 1) immersing a plurality of carbon fiber wires in a modified epoxy resin liquid tank under the premise of tensioning by a rope rolling machine, and rolling into a carbon fiber rope, and drying the carbon fiber rope dipped and coated with modified epoxy resin through an inner aperture hole forming die to form a rigid epoxy resin carbon fiber rope; 2) the surface of the rigid epoxy resin carbon fiber wire rope is coated and dried by the modified EAA layer or the PE layer to form the double-layer optical cable reinforcing core.
The technical scheme 3 is as follows: a method for manufacturing a carbon fiber optical cable reinforcing core comprises the following steps of 1) immersing a plurality of carbon fiber wires in a modified epoxy resin liquid tank under the premise of tensioning by a rope rolling machine, and rolling into a carbon fiber rope, and drying the carbon fiber rope dipped and coated with modified epoxy resin through an inner aperture hole forming die to form a rigid epoxy resin carbon fiber rope; 2) the surface of the rigid epoxy resin carbon fiber rope is coated by the modified epoxy resin layer again to form a single-property double-layer epoxy resin carbon fiber rope; 3) the single double-layer epoxy resin carbon fiber rope surface 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 consumption of carbon fiber wires 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 strength 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-to-hard contact between the core wire and the optical cable reinforced core wire is avoided.
Drawings
FIG. 1 is a schematic view of a first end face structure of a carbon fiber cable reinforcing core.
Fig. 2 is a schematic diagram of a second end face structure of the carbon fiber cable reinforced core.
FIG. 3 is a first flow chart for manufacturing a carbon fiber cable reinforced core.
FIG. 4 is a second flow chart for manufacturing a carbon fiber cable core.
Detailed Description
Example 1: reference is made to figure 1. The utility model provides a core is strengthened to carbon fiber optical cable, strengthens the core including the optical cable, the heart yearn in the core is many carbon fiber silk, many carbon fiber silk stretch-draw and in modified epoxy liquid be woven into carbon fiber silk rope 1 postcure, modified epoxy carbon fiber silk rope 1 after the solidification is by modified EA layer cladding or by PE coating 3. The carbon fiber filaments in the cured modified epoxy resin carbon fiber rope 1 are bonded with the carbon fiber filaments 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 carbon fiber cord 1 is coated with a modified epoxy resin layer 4, and the modified epoxy resin 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 carbon fiber optical cable reinforcing core comprises the following steps of 1) immersing a plurality of carbon fiber yarns 01 in a modified epoxy resin liquid tank 02 under the premise of tensioning by a rope rolling machine 05, rolling into carbon fiber ropes, and drying the carbon 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 carbon fiber ropes; 2) the surface of the rigid epoxy resin carbon fiber wire rope is coated and dried by the modified EAA liquid or the PE liquid 07 to form the double-layer optical cable reinforcing 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 carbon fiber yarns 01 are immersed in the modified epoxy resin liquid tank 02 under the premise of tensioning by the rope rolling machine 05 and are rolled into a carbon fiber rope, and the carbon fiber rope dip-coated with the modified epoxy resin is dried by the inner aperture eye forming die 03 and the drying tunnel 04 to form a rigid epoxy resin carbon fiber rope; 2) the surface of the rigid epoxy resin carbon 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 carbon fiber rope; 3) the single double-layer epoxy resin carbon 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 carbon 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 that every carbon fiber yarn atress is 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.
It should 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 carbon fiber cable, includes the optical cable and strengthens core, characterized by: the core wire in the optical cable reinforcing core is a plurality of carbon fiber wires, the carbon fiber wires are tensioned and woven into a carbon fiber wire rope (1) in modified epoxy resin liquid to be cured, and the cured modified epoxy resin carbon fiber wire rope (1) is coated by a modified EA layer or a PE coating layer (3).
2. The carbon fiber cable reinforced core according to claim 1, wherein: the cured carbon fiber wire rope (1) is coated by a modified epoxy resin layer (4), and the modified epoxy resin layer is coated by a modified EAA layer or a PE layer (4).
3. The carbon fiber cable reinforced core according to claim 1, wherein: the carbon fiber filaments in the cured modified epoxy resin carbon fiber rope (1) are bonded with the carbon fiber filaments into a whole by the modified epoxy resin (2).
4. The carbon fiber cable reinforced core according to 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 carbon fiber optical cable reinforced core is characterized by comprising the following steps: 1) a plurality of carbon fiber threads are immersed in the modified epoxy resin liquid tank under the premise of tensioning by the rope rolling machine and are twisted into a carbon fiber rope, and the carbon fiber rope dipped with the modified epoxy resin is dried by an inner aperture hole forming die to form a rigid epoxy resin carbon fiber rope; 2) the surface of the rigid epoxy resin carbon fiber wire rope is coated and dried by the modified EAA layer or the PE layer to form the double-layer optical cable reinforcing core.
6. A manufacturing method of a carbon fiber optical cable reinforced core is characterized by comprising the following steps: 1) a plurality of carbon fiber threads are immersed in the modified epoxy resin liquid tank under the premise of tensioning by the rope rolling machine and are twisted into a carbon fiber rope, and the carbon fiber rope dipped with the modified epoxy resin is dried by an inner aperture hole forming die to form a rigid epoxy resin carbon fiber rope; 2) the surface of the rigid epoxy resin carbon fiber rope is coated by the modified epoxy resin layer again to form a single-property double-layer epoxy resin carbon fiber rope; 3) the single double-layer epoxy resin carbon fiber rope surface is coated and dried by the modified EAA layer or the PE layer to form the double three-layer optical cable reinforced core.
CN202210258314.6A 2022-03-16 2022-03-16 Carbon fiber optical cable reinforced core and manufacturing method thereof Pending CN114571752A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2012136814A (en) * 2010-12-10 2012-07-19 Komatsu Seiren Co Ltd String-like reinforced fiber composite
CN102692686A (en) * 2012-05-23 2012-09-26 四川航天拓鑫玄武岩实业有限公司 Fiber reinforced plastic rod for optical cables and manufacturing method thereof
CN202472071U (en) * 2011-12-30 2012-10-03 上海裕荣光电科技有限公司 Composite fiber reinforced core

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012136814A (en) * 2010-12-10 2012-07-19 Komatsu Seiren Co Ltd String-like reinforced fiber composite
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
CN202472071U (en) * 2011-12-30 2012-10-03 上海裕荣光电科技有限公司 Composite fiber reinforced core
CN102692686A (en) * 2012-05-23 2012-09-26 四川航天拓鑫玄武岩实业有限公司 Fiber reinforced plastic rod for optical cables and manufacturing method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
意大利通信研究中心实验室: "光纤通信", 31 October 1987, 中国铁道出版社, pages: 428 - 432 *
王德中: "环氧树脂生产与应用", 30 June 2001, 化学工业出版社, pages: 415 - 416 *

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