CN218824822U

CN218824822U - Carbon fiber optical cable reinforced core

Info

Publication number: CN218824822U
Application number: CN202220572727.7U
Authority: CN
Inventors: 沈国忠
Original assignee: Hangzhou Juli Insulation Co ltd
Current assignee: Hangzhou Juli Insulation Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2023-04-07
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to a carbon fiber optical cable reinforcing core, a plurality of carbon fiber threads are immersed in a modified epoxy resin liquid tank under the premise of tensioning of a 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. 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 optical cable reinforced core and the optical cable reinforced core is avoided.

Description

Carbon fiber optical cable reinforced core

Technical Field

The utility model relates to a both had tensile strength high, it is little to have the percentage elongation again, can avoid again causing the carbon fiber optical cable reinforced core of damage to the optical cable, belong to optical cable reinforced core and make the field.

Background

CN109749218B, name "a glass fiber optical cable reinforced core", include glass fiber and coating the glue solution on the glass fiber, the glue solution is made by the following raw materials by mass percent: 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 die and a second coating die, and controlling the temperature to be 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 4m/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 10m/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 and can avoid damage to optical cables is designed.

The design scheme is as follows: the design purpose is realized. The utility model discloses in structural design: 1. the design of many carbon fiber silk stretch-draw of light and being woven into carbon fiber silk rope postcure in modified epoxy liquid is one of the technical characteristics of the utility model. 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 density of carbon fiber is little, therefore specific strength and specific modulus are high, are an excellent reinforcing material to carbon fiber reinforced epoxy composite, its specific strength and specific modulus are the highest in current engineering material, if regard it as the strengthening rib of optical cable reinforcement core alone, then the demand is big, but the utility model discloses weave many carbon fiber silk into the rope under the stretch-draw condition, so not only can make its tensile strength improve several times, and can make the percentage elongation of carbon fiber silk rope reduce to the minimum, simultaneously because many carbon fiber silk are immersed in modified epoxy liquid and are drawn by the rope twisting machine by force (the tensioning state) and weave the shaping, therefore modified epoxy fiber silk rope after its shaping not only rigidity improves more than several times, toughness also improves, more importantly its percentage elongation has reduced nearly zero, has surpassed the required tensile strength of optical cable far away, has guaranteed the security in the optical cable uses. 2. The design that modified epoxy resin carbon fiber silk rope after the solidification is by modified EAA cladding or by PE cladding is two technical characteristics of the utility model. 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 is as follows: the utility model provides a core is strengthened to carbon fiber optical cable, strengthens the core including the optical cable, many carbon fiber silk cross-sections in the core are carbon fiber silk rope structure and carbon fiber silk on the cladding modified epoxy layer, by modified EAA layer cladding or by PE layer cladding on the epoxy layer.

Compared with the background art, the utility model, firstly, the defects of hard, crisp and poor toughness of the optical cable reinforced core are fundamentally solved, the tensile strength of the optical cable reinforced core is improved, and the application safety of the optical cable is ensured; 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 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 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.

Detailed Description

Example 1: reference is made to figure 1. The utility model provides a core is strengthened to carbon fiber optical cable, includes the optical cable and strengthens the core, many carbon fiber silk cross-sections in the optical cable is carbon fiber rope 1 structure and carbon fiber silk go up the cladding modified epoxy layer, are by modified EAA layer cladding or by PE layer 3 cladding on the epoxy layer. 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, which is coated with a modified EAA layer or a PE layer 3.

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.

The manufacturing method of the carbon fiber optical cable reinforced core comprises 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 and a drying tunnel 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 liquid or the PE liquid to form the double-layer optical cable reinforcing core. 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.

On the basis of the embodiment 2, a second manufacturing method of the carbon fiber optical cable reinforced core comprises 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 a 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 and a drying channel 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 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 in the modified EAA liquid or the PE liquid tank to form the double three-layer optical cable reinforcing core 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 is to be understood that: although above-mentioned embodiment is right the utility model discloses a design idea makes more detailed word description, but these word descriptions are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any does not surpass the utility model relates to a combination, increase or modification of idea all fall into the utility model discloses a within the scope of protection.

Claims

1. The utility model provides a core is strengthened to carbon fiber optical cable, includes the optical cable core of strengthening, characterized by: the cross section of a plurality of carbon fiber wires in the optical cable reinforcing core is of a carbon fiber wire rope structure, the carbon fiber wires are coated with a modified epoxy resin layer, and the epoxy resin layer is coated with a modified EAA layer or a PE layer.

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 (3).

3. The carbon fiber cable reinforced core according to claim 1, wherein: the carbon fiber yarns in the modified epoxy resin carbon fiber rope (1) are bonded with the carbon fiber yarns 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.