Preparation method of pressure-resistant annular gas-blowing optical cable

Abstract

The application discloses a pressure-resistant annular air-blow optical cable and a preparation method thereof, wherein the optical cable comprises a cable core, an inner sheath, a silicon oil groove, a baffle, an outer sheath, a side sliding plate and a side sliding plate groove, the inner sheath is arranged in the cable oil groove, flow channels are arranged between the side sliding plate grooves, the baffle is in a fan shape, the side sliding plate groove is one, the outer side of the outer sheath is not in contact with the periphery of the side sliding core, the silicon oil groove is arranged between the inner sheath and the outer sheath, the baffle is slidably arranged on the outer layer of the outer sheath, the side sliding plate is arranged in the side sliding plate groove, the side sliding plate, the outer sheath, the flow channels, the side sliding plate and the side sliding plate groove are arranged on the same side of the center of the side sliding plate groove and the cable core and form a side sliding plate sliding outlet, a unidirectional limiting protruding plate groove is arranged on one side of the inner sheath, a protruding groove is arranged at the position connected with the unidirectional limiting protruding plate groove, and a corresponding recess is arranged on the inner side of the corresponding position close to the flow channels.

Description

Technical Field

[0001] This invention relates to a method for preparing a pressure-resistant ring-shaped air-blown optical cable, belonging to the field of optical cable technology. Background Technology

[0002] With the development of network communication technology, the demand for information and communication has exploded. Existing pipeline resources can no longer meet the needs of network expansion, while constructing new communication pipelines presents problems such as high cost, difficult construction, and serious damage to public facilities. Air-blown optical cable technology can effectively solve these problems. This solution features small cable diameter, high fiber density, high deployment efficiency, and easy recovery, making it the preferred type of optical cable for trunk lines both domestically and internationally. In this technical solution, the optical cable is installed in a pre-installed duct by adhesive tension. In actual laying, air blowers and high-pressure gas are commonly used to propel the optical cable. The most critical factor in the cable propulsion process is the cable's stiffness, as its resistance to lateral pressure directly affects the air-blowing performance. When the cable's lateral pressure resistance is insufficient, problems such as bursting and fiber damage often occur. Improving the fiber's lateral pressure resistance and air-blowing performance is key to enhancing the performance of air-blown optical cables. Summary of the Invention

[0003] The purpose of this invention is to provide a method for preparing a pressure-resistant annular air-blown optical cable to solve the problems mentioned in the background art.

[0004] The technical solution to achieve the purpose of this invention is: a pressure-resistant annular air-blown optical cable, comprising a cable core, an inner sheath, a silicone oil groove, a baffle plate, an outer sheath, side slide plates, and side slide plate grooves. The inner sheath is disposed around the cable core. The silicone oil groove is disposed between the inner and outer sheaths. The baffle plate is slidably installed in the silicone oil groove. The side slide plate grooves are spaced apart on the outer layer of the outer sheath. The side slide plates are disposed in the side slide plate grooves. A flow channel is provided between the side slide plates and the outer sheath. The baffle plate, flow channel, side slide plates, and side slide plate grooves are located within the same sector formed by the side slide plate grooves and the center of the cable core. The silicone oil groove is filled with silicone oil. The space between the cable core and the inner sheath is filled with cable grease. A side slide plate sliding outlet is provided on one side of the side slide plate groove. A one-way limiting protrusion is provided on one side of the inner baffle plate of the inner sheath. A groove is provided on the outer side of the outer sheath at a position not connected to the side slide plate groove, and a corresponding groove is provided on its inner side near the flow channel.

[0005] During use, when the outer sheath is compressed, the protrusion is compressed first, the silicone oil in the silicone oil tank flows, the baffle is displaced under the push of the silicone oil, the silicone oil in the flow channel flows to the side slide groove, the side slide is pushed out from the side slide sliding outlet under the push of the silicone oil, the baffle is pushed to the bottom of the protrusion, and the side slide is pushed to the top of the protrusion. The baffle and the side slide form a ring support, and the extrusion pressure on the protrusion is distributed to the silicone oil tank. The silicone oil acts as a partition layer and at the same time reduces the stress on the inner sheath, reducing the stress on the internal optical fiber and the inner sheath.

[0006] In the above structure, the combination of the protrusion and the groove can increase the capacity of the silicone oil in the silicone oil tank, thereby reducing the required stress.

[0007] In the above structure, the good fluidity of silicone oil can effectively reduce the stress time, but if the fluidity is too good, it will cause dripping. It is necessary to pay attention to controlling the dynamic viscosity of silicone oil at 20℃ (68°F) to be 1200~1800mpa.s.

[0008] Further or optionally, aramid reinforcements are uniformly arranged around the cable core inside the inner sheath. The aramid reinforcements are used to support the inner sheath. The aramid reinforcements are evenly distributed in a 360° circle and placed in the center of the inner sheath. They are integrated with the inner sheath by compression. The bonding strength between the aramid reinforcements and the inner sheath is above 60N, which can effectively prevent displacement between the aramid reinforcements and the inner sheath during bending and flattening.

[0009] Further, or optionally, to improve the flexibility of the guard plate and the side-sliding plate, their elastic modulus is limited to 520–640 GPa, and their density to 1.3–1.6 g / cm³. 3 The compressive strength and density of the baffle and sideplates affect the progress and stability of their ring-shaped support formation. Lighter and more agile materials allow for faster movement, reducing stress time and minimizing bending and jamming during air blowing. Strict material selection is required during fabrication. The process involves mixing carbon fiber composites with graphite and adhesive in an effective ratio to create a carbon fiber composite, controlling the elastic modulus to 520–640 GPa and the density to 1.8–2.0 g / cm³. 3 Then, TPU is extruded and foamed onto the outer layer of the carbon fiber composite to reduce its density to 1.3–1.6 g / cm³. 3 .

[0010] Further or optional, the loose sleeve has a hardness ≥110 Shore D and an elastic modulus ≥2400 MPa. Its specific components are bisphenol S (50-60 parts), epichlorohydrin (10-20 parts), polyimide PI slurry (5-10 parts), ABS resin (5-15 parts), chopped glass fiber (0.5-3 parts), antioxidant (2-4 parts), calcium carbonate (4-8 parts), silica (0.5-3 parts), and polyphenylene sulfide (PPS) resin (5-15 parts). In this scheme, the benzene ring is further enlarged by upgrading bisphenol A to bisphenol S, and the strength and modulus are simultaneously improved by introducing glass fiber and silica. The extrusion of polyphenylene sulfide, ABS resin and PC resin further improves the hardness properties of the material. In the production process, the ring-opening polymerization of epoxide, blending modification and directional stretching process are continuously used to further improve the stability and rigidity of the material.

[0011] Further or optionally, to enhance the strength of the cable core, the cable core includes a central reinforcing member and an optical fiber unit arranged from the inside out. The optical fiber unit is arranged around the central reinforcing member and includes a loose tube and an optical fiber. Fiber grease is filled between the optical fiber and the loose tube. The loose tube is made of polycarbonate.

[0012] To avoid bending and friction with the inner wall of the pipe during the air blowing process, which can lead to insufficient lateral pressure resistance, flattening of the loose tube, and further compression of the optical fiber space within the tube, resulting in increased bending loss or even fiber breakage, the performance of polycarbonate needs to be strictly selected during the cable core preparation process. This ensures that the lateral pressure resistance at 0.15mm can reach 1400N. To achieve this parameter, it is generally recommended that its hardness be controlled at 110 Shore D and its elastic modulus be maintained above 2400Mpa.

[0013] Further or optional, in order to make the force on each part more uniform, the baffle plate, side plate and side plate groove are three sets evenly distributed at 120°, and the flow channel, convex groove and recess are multiple.

[0014] This invention also provides a method for preparing a pressure-resistant toroidal air-blown optical cable, comprising the following steps:

[0015] Prepare the baffle plate and side slide plate;

[0016] Preparation of aramid-reinforced parts;

[0017] Prepare the inner sheath;

[0018] Prepare the outer sheath and side slide groove.

[0019] The above preparation method has simple steps and smooth transitions between steps, which can effectively improve production efficiency.

[0020] Further or optionally, the preparation steps for the baffle plate and side plate are as follows:

[0021] Carbon fiber composite filaments were immersed in a graphene dispersion to obtain a mixture;

[0022] The mixture is molded to obtain baffle and side slide parts;

[0023] The baffle and side slide parts are inserted into the mold core in the form of extrusion tubes and initially fixed.

[0024] In the above steps, pay attention to adjusting the tension according to the wire size during the wire feeding process. When the carbon fiber is immersed in the graphene dispersion, pay attention to the preheating temperature, perform multi-stage preheating, and pay attention to controlling the production speed to maintain the fusion rate. During the curing process of the adhesive, pay attention to graded treatment to maintain uniform curing at the inner and outer ends. At the same time, use the increased hardness during the curing process to prevent scratches and damage during the transfer process.

[0025] Further or optional, the preparation steps of the outer sheath and side slide groove are as follows:

[0026] The inner sheath and the baffle are fed into the mold core through the oil filling pipe and extruded together with the silicone oil.

[0027] Cool the extruded product;

[0028] In the above extrusion process, the core and the sleeve are respectively provided with symmetrical protrusions, and the gaps are provided with flow channels and side slide slots, which enter the sleeve in the form of extrusion tubes.

[0029] During the extrusion process described above, it is important to maintain pressure to ensure that the silicone oil is evenly filled in the silicone oil tank and flow channel. The side slide plate is released through the active feed line and enters the die sleeve in the form of an extrusion tube through the side slide plate slot hole in the die core before entering the die head via the side slide plate fixing device. The die sleeve is also equipped with corresponding side slide plate slots to extrude the overall shape. After molding, it directly enters a 10°C cooling water tank for cooling. The temperature of the second water tank is set to 0°C for rapid cooling to prevent silicone oil from seeping out.

[0030] By adopting the above technical solution, the present invention has the following beneficial effects:

[0031] (1) This application provides an air-blown optical cable that can effectively improve the resistance to lateral pressure, thereby achieving a two-way improvement in the resistance to lateral pressure and the air-blown performance of the air-blown optical cable.

[0032] (2) The structure of the present invention also provides an inner sheath with an aramid reinforced support, which can effectively prevent the inner sheath from deforming during the bending process of the optical cable.

[0033] (3) The present invention also selects the material of the loose tube so that it can withstand lateral pressure of 1400N at 0.15mm and the material hardness reaches 110Shore D, which improves the air blowing performance of the optical cable.

[0034] (4) The present invention also limits the number of baffles, side slides and side slide grooves to make the force more uniform and the performance better.

[0035] (5) The present invention also provides a method for preparing a pressure-resistant ring-shaped air-blown optical cable, which has excellent process connectivity, simple preparation process, and is conducive to large-scale production. Attached Figure Description

[0036] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0037] Figure 1 This is a schematic diagram of the structure of the present invention.

[0038] Figure 2 This is a schematic diagram of the structure of the present invention under compression.

[0039] Figure 3 and Figure 4 This is a schematic diagram of the preparation method of the present invention.

[0040] The labels in the attached diagram are:

[0041] Cable core 1, central reinforcing member 11, optical fiber unit 12, loose tube 121, optical fiber 122, inner sheath 2, aramid reinforcing member 21, silicone oil groove 3, baffle plate 4, outer sheath 5, protrusion groove 51, groove 52, side slide plate 6, side slide plate groove 7, flow channel 8. Detailed Implementation

[0042] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of the embodiments of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0047] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances. The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and should not be used to limit the scope of protection of the present invention.

[0048] (Example 1)

[0049] See Figure 1 A pressure-resistant ring-shaped air-blown optical cable includes a cable core 1, an inner sheath 2, a silicone oil groove 3, a baffle plate 4, an outer sheath 5, side slide plates 6, and side slide plate grooves 7. The inner sheath 2 is disposed around the cable core 1. The silicone oil groove 3 is disposed between the inner sheath 2 and the outer sheath 5. The baffle plate 4 is slidably installed in the silicone oil groove 3. The side slide plate grooves 7 are spaced apart on the outer layer of the outer sheath 5. The side slide plates 6 are disposed in the side slide plate grooves 7. A flow channel 8 is provided between the side slide plate 6 and the outer sheath 5. The baffle plate 4... Plate 4, flow channel 8, side slide plate 6 and side slide plate groove 8 are located in the same sector formed by the side slide plate groove 7 and the center of the cable core 1; the silicone oil groove 3 is filled with silicone oil; the space between the cable core 1 and the inner sheath 2 is filled with cable grease; a side slide plate sliding outlet is provided on one side of the side slide plate groove 7; a one-way limiting protrusion is provided on one side of the inner grid baffle of the inner sheath; a groove 51 is provided on the outer side of the outer sheath 5 at a position not connected to the side slide plate groove 7, and a corresponding groove 52 is provided on its inner side near the corresponding position of the flow channel 8.

[0050] The baffle plate 4, the side slide plate 6 and the side slide plate groove 7 are three sets evenly distributed at 120°, and there are multiple flow channels 8, protrusions 51 and grooves 52.

[0051] With this structure, when pressure is applied to the outer wall of the pressure-resistant ring-shaped air-blown optical cable, its structure after being stressed is as follows: Figure 2As shown, the silicone oil in the silicone oil tank 3 flows, the baffle 4 moves in a fixed direction under the action of the limiting device, the silicone oil enters the side slide groove 7 through the flow channel 8, and the side slide 6 is pushed by the silicone oil to pass through the side slide sliding outlet to move, finally achieving 360° rigid protection for the outer layer of the optical cable.

[0052] The inner sheath 2 is surrounded by aramid reinforcing members 21 evenly arranged around the cable core 1.

[0053] It should be emphasized that the aramid reinforcement 21, extruded inside the inner sheath 2, can prevent misalignment that would reduce the stiffness of the inner sheath. When the aramid reinforcement 21 is extruded outside the inner sheath 2, the deformation of the inner sheath 2 before and after compression is as follows: Figure 3 As shown, only one side of it deforms, resulting in a decrease in overall strength, which is not conducive to protecting the internal cable core structure. When the aramid reinforcement 21 is extruded inside the inner sheath 2, the inner sheath 2 deforms as a whole. During the compression process, all the aramid reinforcements 21 in the inner sheath 2 will be used for support, so the optical cable will be elliptical after being stressed.

[0054] The cable core 1 includes a central reinforcing member 11 and an optical fiber unit 12 arranged from the inside to the outside. The optical fiber unit 12 is arranged around the central reinforcing member 11 and includes a loose tube 121 and an optical fiber 122. The space between the optical fiber 122 and the loose tube 121 is filled with fiber grease. The loose tube 121 is made of polycarbonate.

[0055] Tests have shown that when the wall thickness of the loose sleeve 121 is 0.15mm, the lateral pressure resistance can reach 1400N, which provides a large margin during air-blowing installation and is beneficial for high-speed air-blowing operations.

[0056] This invention also provides a method for preparing a pressure-resistant toroidal air-blown optical cable, comprising the following steps:

[0057] Prepare the baffle plate 4 and the side slide plate 6;

[0058] Preparation of aramid reinforcement 21;

[0059] Prepare inner sheath 2;

[0060] Prepare the outer sheath 5 and the side slide groove 7.

[0061] The preparation steps for the baffle plate 4 and the side slide plate 6 are as follows:

[0062] Carbon fiber composite filaments were immersed in a graphene dispersion to obtain a mixture;

[0063] The mixture is molded to obtain baffle plate 4 and side slide plate 6 parts;

[0064] The baffle plate 4 and the side slide plate 6 are inserted into the mold core in the form of extrusion tubes and initially fixed.

[0065] The specific process is as follows: Figure 3 and Figure 4 As shown,

[0066] The carbon fiber composite filaments are released via an active feeding method, with tension adjusted according to the filament size, controlled within the range of 100g to 350g. A two-stage roller positioning device is installed. A tank immersed in graphene dispersion is positioned before the roller positioning device, and a preheating device is positioned after the tank. The preheating temperature is 65±5℃, and the production speed is 0.5m / min. The graphene dispersion tank consists of a positioning mold, an injection port, a return injection port, and an overflow collection box. The carbon fiber composite filaments pass through the positioning mold into the tank and through the graphene dispersion. Overflowing graphene dispersion flows into the overflow collection box and is then injected back into the tank via a return pipeline. Continuous injection ensures that the carbon fiber composite filaments are completely immersed in the graphene dispersion. Low-speed production and complete immersion ensure that graphene is uniformly adsorbed on the carbon fiber surface or penetrates into the fiber interior. The four-stage positioning mold ensures the centered position of the carbon fiber composite filaments, preventing the graphene adsorbed on the carbon fiber surface from being scraped due to angular differences, which would reduce the fusion rate. The mixture is shaped through an extrusion mold. The extrusion mold is equipped with a box for graphene dispersion and a glue injection box. A preheating device is located after the glue injection box, and a baking device is located after the extrusion mold. Multi-stage preheating allows the liquid graphene dispersion to solidify and bond with the carbon fiber composite filaments, effectively using adhesive. Baking then sets the shape (multi-stage segmented heating ensures uniform curing at both ends, while improving the fusion of each graphene segment; after curing, the liquid becomes solid, reducing scratching and loss caused by the roller positioning device, further improving the fusion of the graphene dispersion and carbon fiber composite filaments). Multiple baked composite materials are then actively released. This process continues, forming different shapes of baffles and sideplates. These baffles and sideplates are extruded through a mold core and vacuumed to achieve adhesion between TPU and the baffles and sideplates. After cooling in a cooling water tank, they are collected onto a tray.

[0067] Specifically, the central reinforcing member and the loose tube 121 are manufactured using an SZ twisting method and fixed with aramid yarn. The aramid yarn used has an absolute value of linear expansion coefficient of <5.3×10-6℃-1 at 80℃. This extremely low shrinkage reduces the problem of the fiber duty cycle being reduced and loss increasing due to the tightening of the bundle tube caused by thermal expansion and contraction during temperature cycling. The yarn pitch and twisting pitch are adjusted according to the product structure. The cable core is filled with water-blocking grease to prevent water from entering, while avoiding direct contact between the inner sheath 1 and the loose tube 121. If the inner sheath 2 directly contacts the loose tube 121 during extrusion, the loose tube 121 will expand due to heat, causing changes in its excess length. It may also adhere to the inner sheath 2, further causing changes in excess length as the inner sheath 2 changes. Therefore, full filling with grease is performed. The cable core 1 is molded through the central hole of the die core, while the aramid reinforcement 21 enters through evenly distributed holes on the die core and is molded at the same time as the cable core 1. The sheath material is extruded between the die core and the die core. The die core has a tubular structure, which can effectively separate the cable core 1 and the aramid reinforcement 21 during extrusion, so that the aramid reinforcement 21 is extruded between the inner sheaths 2, while the cable core 1 is extruded inside the inner sheath 2. The extrusion temperature is from 155 to 185°C. Low-temperature extrusion is also to reduce the impact of heat on the excess length of the loose tube.

[0068] The preparation steps of the outer sheath 5 and the side slide groove 7 are as follows:

[0069] The inner sheath 5 and the baffle plate 4 are fed into the mold core through the oil filling pipe and extruded together with the silicone oil.

[0070] Cool the extruded product;

[0071] In the above extrusion process, the mold core and the mold sleeve are respectively provided with symmetrical protrusions, and the gaps are provided with flow channels 8 and side slide grooves 7 holes, which enter the mold sleeve in the form of extrusion tubes.

[0072] Specifically, the inner sheath 2 and the baffle plate 3 are extruded together through the oil filling pipe into the mold core, and extruded together with silicone oil during the production process. The oil filling device automatically maintains pressure, thereby ensuring that the silicone oil can be evenly filled into the flow channel. The mold core and the mold sleeve are respectively provided with symmetrical protrusions, and flow channels 8 and side slide grooves 7 are set in the gap. The side slide 6 is released by the active feeder, and before entering the die head, it is fixed by the side slide 6. Then, it enters the mold sleeve in the form of an extrusion tube through the side slide groove 7 in the mold core. The mold sleeve is also provided with corresponding side slide grooves 7, thereby extruding and forming the overall shape. After forming, it directly enters a 10°C cooling water tank for cooling. The temperature of the second water tank is set to 0°C, and the silicone oil seeps out through rapid cooling. After cooling, the optical cable is wound onto the reel.

[0073] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-resistant annular gas-blowing optical cable, characterized by: The cable includes a cable core (1), an inner sheath (2), a silicone oil groove (3), a baffle (4), an outer sheath (5), a side slide plate (6) and a side slide plate groove (7). The inner sheath (2) is arranged outside the cable core (1). The silicone oil groove (3) is arranged between the inner sheath (2) and the outer sheath (5). The baffle (4) is slidably arranged in the silicone oil groove (3). The side slide plate groove (7) is arranged at intervals outside the outer sheath (5). The side slide plate (6) is arranged in the side slide plate groove (7). A flow channel (8) is arranged between the side slide plate (6) and the outer sheath (5). The baffle (4), the flow channel (8) and the side slide plate (6) are located in the same sector formed by the side slide plate groove (7) and the center of the cable core (1). One side of the side slide plate groove (7) is provided with a side slide plate sliding outlet. One side of the baffle in the inner sheath is provided with a one-way limiting protrusion. The baffle in the inner sheath (4) moves in a fixed direction under the action of the limiting protrusion. Silicone oil enters the side slide plate groove (7) through the flow channel (8). The side slide plate (6) is displaced by passing through the side slide plate sliding outlet under the push of the silicone oil. The outer side of the outer sheath (5) is provided with a convex groove (51) at a position not connected with the side slide plate groove (7). The inner side of the outer sheath (5) is provided with a corresponding concave groove (52) at a position close to the flow channel (8). The cable core (1) includes a central reinforcing member (11) and an optical fiber unit (12) arranged from inside to outside. The optical fiber unit (12) is arranged around the central reinforcing member (11) and includes a loose tube (121) and an optical fiber (122). The optical fiber (122) and the loose tube (121) are filled with fiber paste. The loose tube (121) is made of polycarbonate.

2. A pressure-resistant annular gas-blowing optical cable according to claim 1, characterized in that: The inner sheath (2) is uniformly provided with aramid reinforcing members (21) around the cable core (1).

3. The pressure-resistant annular gas-blowing optical cable according to claim 1, characterized in that: The loose tube contains 50-60 parts of bisphenol S, 10-20 parts of epoxy chloropropane, 5-10 parts of polyimide paste, 5-15 parts of ABS resin, 0.5-3 parts of chopped glass fiber, 2-4 parts of antioxidant, 4-8 parts of calcium carbonate, 0.5-3 parts of silicon dioxide and 5-15 parts of polyphenylene sulfide resin.

4. The pressure-resistant annular gas-blowing optical cable according to claim 1, characterized in that: The elastic modulus of the baffle (4) and the side slide plate (6) is 520-640 GPa, and the density is 1.3-1.6 g / cm 3 .

5. The pressure-resistant ring-shaped gas-blowing optical cable according to any one of claims 1-4, characterized in that: The baffle (4), the side slide plate (6) and the side slide plate groove (7) are three groups uniformly distributed at an angle of 120°. The flow channel (8), the convex groove (51) and the concave groove (52) are multiple.

6. A method for manufacturing the pressure-resistant annular gas-blowing optical cable according to any one of claims 1 to 4, characterized by The method comprises the following steps: Preparation of the baffle (4) and the side slide plate (6); Preparation of the aramid reinforcing member (21); Preparation of the inner sheath (2); Preparation of the outer sheath (5) and the side slide plate groove (7); The preparation steps of the baffle (4) and the side slide plate (6) are as follows: The carbon fiber composite wire is immersed in the graphene dispersion liquid to obtain a mixture; The mixture is subjected to a molding process to obtain the baffle (4) and the side slide plate (6) parts; The baffle (4) and the side slide plate (6) parts are placed in the form of an extruded tube into a mold core and are preliminarily fixed.

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