KR101006009B1 - The method of manufacturing optical-fiber cable of a vehicle and the cable thereof - Google Patents

Abstract

The present invention discloses a method for manufacturing a marine optical fiber cable and a marine optical fiber cable thereby.

The method for manufacturing a marine optical fiber cable according to the present invention and the marine optical fiber cable according to the present invention include step S1 of covering a protective layer surrounding the optical fiber, and a plurality of optical fibers coated with the protective layer are circumscribed around the middle tugboat, and the outer surface thereof. S2 step is provided to surround the outer heat-resistant layer, the primary sheath layer, wherein the primary sheath layer is formed by applying a primary thermosetting resin and vulcanized with steam of 150 to 250 ℃ under 3 to 5 atm and S3 step of forming the secondary sheath layer by applying the outer surface of the primary sheath layer with a secondary heat curing resin and vulcanized in a steam environment of 150 to 250 ℃ under 3 to 5 atm, In addition to the optical properties of the optical fiber itself, optical fiber cables with excellent flame-resistance, fire-resistance and mud-resistance It is a ball.

Ship, fiber optic, cable, manufacturing method

Description

The method of manufacturing optical fiber cable of a vehicle and the cable according to the present invention

The present invention relates to a method for manufacturing a ship's optical fiber cable and a ship's optical fiber cable, and more particularly, does not deteriorate the physical properties of the optical fiber or affect the optical properties of the optical fiber itself, flame-resistance, fire resistance The present invention relates to a method for manufacturing a ship's optical fiber cable excellent in fire-resistance and mud-resistance, and a ship's optical fiber cable.

As civilization has advanced, this advancement has been simultaneously made on ships, and fiber has been used as a line for communication, which must meet the specifications required by ships.

Conventionally, optical fibers used in ships are provided by a method of applying a protective layer to closely adhere to the surface thereof (tight buffer type) or a method including a tube filling oily jelly around the surface of the optical fiber, These fibers are fed together in several strands and sheathed or wrapped in steel or copper braided to be installed on ships with fiber optic cables.

In order to be used in ships, the optical fiber cable must be able to be used in extreme conditions such as fire, distress or shipwreck due to natural disasters. The specification shall not be denatured within this range.

For example, these standards can be used as the standard set by the international standard NEK606.

In this case, flame-resistance, fire-resistance, and mud-resistance are specified. In order to use the optical fiber cable in a ship, all flame retardance, fire resistance, and pollution resistance must be satisfied.

In order to satisfy the above standards, there have been attempts to use cross-linked polyethylene (XLPE), which is used as a sheath in ship wire cables.

The XLPE is mixed with an organic vulcanizing agent to polyethylene (PE), and then heats it by chemical cross-linking, radiation cross-linking or water cross-linking. It has properties of curing and elasticity.

However, such a conventional method has a problem of causing deterioration in the optical properties of the optical fiber itself as well as the deterioration of the physical properties of the above-described protective layer or tube surrounding the optical fiber requiring severe pressure or high temperature.

Accordingly, the first technical problem to be solved by the present invention is not only to deteriorate the physical properties of the protective layer or the tube described above, but also to cause deterioration in the optical properties of the optical fiber itself, and to allow continuous production (in-line type). It is to provide a method for manufacturing a marine optical fiber cable with excellent manufacturing efficiency.

In addition, the second technical problem to be solved by the present invention is not only deterioration of the physical properties of the protective layer or tube described above, but also does not cause degeneration in the optical properties of the optical fiber itself, it is possible to continuous production (in-line type) It is to provide an optical fiber cable for ships with excellent manufacturing efficiency.

The present invention, in order to solve the first technical problem described above, S1 step of covering the protective layer surrounding the optical fiber, and a plurality of the optical fiber coated with the protective layer is combined around the center tensile line, the outer heat-resistant layer on the outer surface And a primary sheath layer, wherein the primary sheath layer is coated with a primary thermosetting resin and vulcanized with steam at 150 to 300 ° C. under 3 to 5 atmospheres to form the primary sheath. The method of manufacturing an optical fiber cable for ships comprising the step S3 of coating the outer surface of the layer with a secondary heat curable resin and vulcanizing in a steam environment at 150 to 250 ° C. under a pressure of 3 to 5 atm to form a secondary sheath layer. to provide.

According to an embodiment of the present invention, the step S1 may further include providing a separate heat resistant layer on an outer surface of the protective layer.

According to another embodiment of the present invention, the heat resistant layer may be composed of mica particles.

According to another embodiment of the present invention, the mica particles may have an average particle diameter of 10 to 200㎛.

According to another embodiment of the present invention, the amount of the mica particles may be 130 to 190 g / ㎡ with respect to the area of the heat-resistant layer.

According to another embodiment of the present invention, the outer heat-resistant layer may be composed of mica particles.

According to another embodiment of the present invention, the mica particles may have an average particle diameter of 10 to 200㎛.

According to another embodiment of the present invention, the amount of the mica particles may be 130 to 190 g / ㎡ with respect to the area of the heat-resistant layer.

According to another embodiment of the present invention, the step S2 may further include forming an inflatable layer inside the outer heat-resistant layer.

According to another embodiment of the present invention, step S3 may further include providing a braided layer to an inner side surface of the secondary sheath layer.

According to another embodiment of the present invention, the method may further include providing a polyethylene terephthalate tape layer on at least one of the inner and outer surfaces of the braided layer.

According to another embodiment of the present invention, the time to vulcanize in step S2 may be 10 minutes to 20 minutes.

According to another embodiment of the present invention, the time that is vulcanized in step S3 may be 10 to 20 minutes.

According to another embodiment of the present invention, the vulcanization in the step S2 may be carried out under the conditions that the tensile strength of the primary sheath layer is 0.92 to 1.5kgf / ㎠ and elongation is 120 to 300%.

According to another embodiment of the present invention, the vulcanization in step S3 may be carried out under the condition that the tensile strength of the secondary sheath layer is 0.92 to 1.5kgf / cm 2 and the elongation is 120 to 300%.

According to another embodiment of the present invention, the primary thermosetting resin in the step S2 may be rubber.

According to another embodiment of the present invention, the secondary thermosetting resin in the step S3 may be rubber.

According to another embodiment of the present invention, the rubber is natural rubber, ebonite, rubber chloride, butadiene styrene copolymer, nitrile rubber, chloroprene rubber, polyisoprene, butyl rubber, polyisobutylene, polysulfide synthetic rubber It may be at least one selected from the group consisting of chlorosulfonated polyethylene, silicone rubber, fluorine rubber, urethane rubber, olefin rubber, methacrylic acid copolymer, ethylene propylene copolymer and ethyl vinyl acetate copolymer.

According to another embodiment of the present invention, the rubber is natural rubber, ebonite, rubber chloride, butadiene styrene copolymer, nitrile rubber, chloroprene rubber, polyisoprene, butyl rubber, polyisobutylene, polysulfide synthetic rubber It may be at least one selected from the group consisting of chlorosulfonated polyethylene, silicone rubber, fluorine rubber, urethane rubber, olefin rubber, methacrylic acid copolymer, ethylene propylene copolymer and ethyl vinyl acetate copolymer.

On the other hand, the present invention provides a marine optical fiber cable manufactured by the manufacturing method according to any one of the above to achieve the above-described second technical problem.

In addition, the present invention is a center tension line for imparting a tensile force to the optical fiber cable, a plurality of optical fibers associated with the center tension line in the center, a protective layer provided on the outer surface of the optical fiber to prevent damage to the optical fiber, On the outer surface of the outer heat-resistant layer and the outer heat-resistant layer which is provided on the outer surface of the bundle by combining a plurality of optical fibers provided with the protective layer to protect the bundle from the high temperature heat applied in the event of a fire Provided is a ship optical fiber cable comprising a primary sheath layer to prevent damage to the bundle and a secondary sheath layer surrounding the outer surface of the primary sheath layer.

According to an embodiment of the present invention, the protective layer may further include a separate heat resistant layer on its outer surface. According to another embodiment of the present invention, the heat resistant layer may be composed of mica particles.

According to another embodiment of the present invention, the mica particles may have an average particle diameter of 10 to 200㎛.

According to another embodiment of the present invention, the amount of the mica particles may be 130 to 190 g / ㎡ with respect to the area of the heat-resistant layer.

According to another embodiment of the present invention, the outer heat-resistant layer may be composed of mica particles.

According to another embodiment of the present invention, the mica particles may have an average particle diameter of 10 to 200㎛.

According to another embodiment of the present invention, the amount of the mica particles may be 130 to 190 g / ㎡ with respect to the area of the heat-resistant layer.

According to another embodiment of the present invention, it may be further provided with a swelling layer inside the outer heat-resistant layer.

According to another embodiment of the present invention, a braided layer may be further provided on the inner surface of the secondary sheath layer.

According to another embodiment of the present invention, the polyethylene terephthalate tape layer may be further provided on at least one of the inner side and the outer side of the braided layer.

The manufacturing method of the ship optical fiber cable according to the present invention not only does not deteriorate the physical properties of the optical fiber or the optical properties of the optical fiber itself, but also flame-resistance, fire-resistance and mud-resistance. ) Has an excellent effect.

In addition, the marine optical fiber cable according to the present invention not only does not deteriorate the physical properties of the optical fiber or the optical properties of the optical fiber itself, but also flame-resistance, fire-resistance and mud-resistance. This has an excellent effect.

Hereinafter, the present invention will be described in more detail.

However, the present invention is not limited to the embodiments described below, and the present invention includes various modifications or similar embodiments, as long as it is recognized by those skilled in the art to the same or equivalent scope.

The manufacturing method of the optical fiber cable for ships according to the present invention comprises the step S1 of covering the protective layer surrounding the optical fiber and the plurality of the optical fibers coated with the protective layer, and having a heat-resistant layer and a primary sheath layer on the outer surface thereof. The primary sheath layer is coated with a primary thermosetting resin and vulcanized under a steam environment of 150 to 300 ° C. under a pressure of 3 to 5 atm to form an S2 step, and the outer surface of the primary sheath layer is a secondary thermosetting resin. It is characterized in that it comprises a step S3 by applying to form a secondary sheath layer by vulcanization in a steam environment of 150 to 300 ℃ under 3 to 5 atm.

First, in step S1, the protective layer surrounding the optical fiber is coated.

The optical fiber is used as a communication line with a total efficiency of almost 100% without loss of photo-signal using total reflection.

The protective layer surrounding the optical fiber serves to prevent the optical fiber from deteriorating its characteristics due to damage such as scratches or breaks.

The protective layer may be formed in close contact with the optical fiber introduced therein, or may be provided in the shape of a tube spaced apart from the optical fiber to some extent. When provided in the shape of the tube can be filled with oily jelly (jelly) around the optical fiber therein.

The protective layer may be made of a polymer resin such as polyvinyl, polyethylene terephthalate, and polycarbonate, and the type of the protective layer is not particularly limited as long as it can prevent physical damage of the optical fiber.

In addition, in order to describe in more detail the configuration of the above-described optical fiber, protective layer will be described with reference to FIG.

1 and 2 is a view showing a perspective view and a cross-sectional view of the optical fiber cable for ships according to the present invention.

Referring to FIGS. 1 and 2, it can be seen that a plurality of optical fibers 110 introduced into the protective film 120 are surrounded by a central tensile line 100 from the center, where the optical fibers may be one. In addition, a plurality of optical signals may be configured to communicate simultaneously.

 On the other hand, the outer surface of the protective layer 120 may be further provided with a separate heat-resistant layer 125, the heat-resistant layer 125 is a fire occurs in a ship in which a ship optical fiber cable according to the invention is used It is used to prevent adverse effects on the optical properties of the optical fiber even by high temperature heat, but as long as it is a mineral that can prevent high temperature heat, the mica particles can be used. .

The mica particles may have an average particle diameter of 10 to 200 μm, but if less than 10 μm, the cost of processing into particles increases, and the particles form after the carbonization of the binder or the substrate tape due to high temperature in the event of a fire. In this case, the optical fiber introduced therein may be damaged and, on the contrary, when it exceeds 200 μm, an empty space increases in the form of particles, and the flame caused by the fire passes through the space, thereby damaging the internal optical fiber.

In addition, the amount of the mica particles may be 130 to 190 g / ㎡ with respect to the area of the heat-resistant layer, if less than 130 g / ㎡, the shape of the mica particles may be damaged by the flame in the event of fire can damage the optical fiber On the contrary, if it exceeds 190g / ㎡ may increase the production cost may reduce the productivity.

These minerals can be processed and mixed with organic or inorganic binders that are processed in powder form to impart adhesion and coated or adhered in the form of powder to a separate adhesive base. The binder is not particularly limited to use.

On the other hand, when the heat-resistant layer 125 is used, the optical fiber bundle to be described later also includes a configuration corresponding to 125.

Next, in the step S2, the protective layer 120 is prepared with a plurality of the optical fiber 110 is coated in a plurality of centered on the tension line 100, the outer heat-resistant layer 130, 1 on its outer surface It is provided to surround the chassis sheath layer 140, the outer heat-resistant layer 130 may use the same material as the heat-resistant layer described in step S1, and the primary sheath layer 140 is applied with a primary heat curing resin It is a step of forming by vulcanization in a steam environment of 150 to 300 ℃ under 3 to 5 atm.

The protective layer 120 is coated with a plurality of the optical fiber 110 is coated, the association is generally when the center of the tensile line 100 is arranged in a parallel (date) in the center In addition, the optical fiber cable for ships according to the invention is manufactured and wound around the bobbin, carried out to improve workability and enhance the appearance of the optical fiber cable. This means twisting the strands of fiber.

The associated optical fiber may be referred to as a bundle (a configuration including all the components corresponding to the reference numerals 100, 110, and 120), and the outer surface thereof is wrapped with the primary sheath layer 140.

In this case, the bundle is fed together to form a cable, and a plurality of fillers may be combined together with a plurality of optical fibers to form a bundle so that the shape is formed to be close to a cylinder. For example, in the case of three optical fibers 110 introduced into the protective layer 120, three tubes, which are three layers of a protective layer without introducing optical fibers, are disposed between the three layers. Can be filled.

In addition, the primary sheath layer 140 is used to prevent the optical fiber bundle from being damaged during the actual installation work, and is coated with a primary thermosetting resin to surround the entire outer surface of the optical fiber bundle. It can be formed by vulcanization in a steam environment of 150 to 250 ℃ under 5 atm.

Meanwhile, the primary thermosetting resin is not particularly limited, but rubber may be used, and the rubber may be natural rubber as well as ebonite, chloride rubber, butadiene styrene copolymer, nitrile rubber, chloroprene rubber, polyisoprene, and butyl. In the group consisting of rubber, polyisobutylene, polysulfide synthetic rubber, chlorosulfonated polyethylene, silicone rubber, fluorine rubber, urethane rubber, olefin rubber, methacrylic acid copolymer, ethylene propylene copolymer and ethyl vinyl acetate copolymer It may be at least one selected.

Ship's optical fiber cable according to the present invention can be manufactured by ear bobbin to enable continuous operation from the beginning of the manufacturing process to the completion of the manufacturing process, in the bobbin is wound around the optical fiber is put into the process to release the optical fiber and go through the process, The finished optical fiber is wound around another bobbin.

The primary thermosetting resin is applied and cured to a primary sheath layer through a process of vulcanization, and such vulcanization may be performed through a device called a vulcanization tube. The vulcanizing tube refers to an apparatus having a long and closed conduit along which the temperature of steam can be uniformed and along the traveling direction of the optical fiber.

Here, the curing of the primary thermosetting resin may be made in the vulcanizing tube. If the vulcanization pressure is less than 3 atm, the primary sheath layer may be hard to be formed in close contact with the inside, and conversely, 5 atm If exceeded, the optical fiber or the protective layer may be damaged.

In addition, if the vulcanization temperature is less than 150 ° C, the curing of the primary sheath layer may be insufficient and the curing may be poor. Conversely, if the vulcanization temperature exceeds 250 ° C, the optical fiber or its protective layer may be damaged or manufactured by excessive energy drop. May adversely affect efficiency.

In addition, the vulcanization time may be 10 to 20 minutes, when the line speed of the optical fiber cable running through the vulcanizing tube is 5 m / min, it can be seen that the length of the vulcanizing tube is 10 minutes if the length of the vulcanizing tube is 50 m, and 10 minutes if 100 m. If it is less than minutes, the primary thermosetting resin may be uncured, whereas if it is more than 20 minutes, it may cause deformation or damage of the optical fiber or its protective layer.

On the other hand, in the vulcanizing process, the plurality of optical fibers should have no change in physical properties or optical properties due to their own load, which can be seen through the degree of stretching or stretching of the optical fibers.

Here, it is preferable that the tensile strength of the primary sheath layer is 0.92 to 1.5 kgf / cm 2 and the elongation is 120 to 300%. If the tensile strength is less than 0.92 kgf / cm 2, there is a weak problem as the sheath material. On the contrary, if the 1.5 kgf / ㎠ the impact strength may be good but the lack of flexibility may adversely affect the optical fiber introduced into the bending.

In addition, when the elongation of the primary sheath layer is less than 120%, the elasticity may be weak. On the contrary, when the elongation of the primary sheath layer is greater than 300%, the flexibility may be improved.

On the other hand, the outer heat-resistant layer 130 may be the same mineral as the heat-resistant layer 125 as described above.

On the other hand, between the optical fiber bundle and the outer heat-resistant layer 130 may be further provided with a swellable layer (127) to increase the water resistance in the ship optical fiber bundle according to the present invention, the inflatable layer 127 ) Can be used to absorb moisture, such as yarn (yarn), non-woven fabric, the forming method can be inserted in the form of a straight line or a cone (cone), winding the end, lateral winding.

Next, in step S3, the outer surface of the primary sheath layer 140 is coated with a secondary thermosetting resin and cured in a steam environment at 150 to 250 ° C. under 3 to 5 atmospheres to form the secondary sheath layer 150. Forming.

Here, the secondary sheath layer 150 not only reinforces the role of the primary sheath layer but also polyethylene terephthalate (PET), which may be interposed between the primary sheath layer 140 and the secondary sheath layer 150. The tape layer 143 serves to finish the braided layer 145 woven from steel wire or copper wire. Here, the PET tape layer 143 is not only provided in the shape of a tape, of course, also includes a form of hardened by applying PET in the liquid state.

The polyethylene terephthalate tape layer 143 or braided layer 145 may be applied alone or in combination to reflect the requirements of the customer, the braided layer 145 is a rat fiber optic cable according to the present invention It can be used to prevent damage to the eating, in this case, the polyethylene terephthalate tape layer 143 is a vulcanized sheath layer (140, 150) to prevent the braided layer 145 to penetrate In addition to the polyethylene terephthalate tape layer 143 provided to the inside of the braided layer 145 may be further provided with an outer polyethylene terephthalate tape layer 147 provided to the outside of course.

In addition, the secondary heat curing resin may be the same material as the above-mentioned primary heat curing resin. For example, rubber may be used, and the rubber may be natural rubber, ebonite, chloride rubber, butadiene styrene copolymer, nitrile rubber, chloroprene rubber, polyisoprene, butyl rubber, polyisobutylene, polysulfide synthetic rubber, chlorosulfonated It may be at least one selected from the group consisting of polyethylene, silicone rubber, fluorine rubber, urethane rubber, olefin-based rubber, methacrylic acid copolymer, ethylene propylene copolymer and ethyl vinyl acetate copolymer.

In addition, the curing of the secondary heat curing resin is carried out through vulcanization, if the vulcanization pressure is less than 3 atm, it may be difficult to form the secondary sheath layer in close contact therewith, if the pressure exceeds 5 atm It can damage the optical fiber or the protective layer.

In addition, when the vulcanization temperature is less than 150 ° C, the curing of the secondary sheath layer may be insufficient and the curing may be poor. On the contrary, when the vulcanization temperature exceeds 250 ° C, the optical fiber or its protective layer may be damaged or manufactured by excessive energy drop. May adversely affect efficiency.

In addition, the vulcanization time may be 10 to 20 minutes, when the line speed of the optical fiber cable running through the vulcanizing tube is 5 m / min it can be seen that the length of the vulcanizing tube is 50 minutes 10 minutes, 100 minutes 20 minutes If it is less than 10 minutes, the secondary heat curable resin may be uncured, whereas if it is more than 20 minutes, it may cause deformation or damage of the optical fiber or its protective layer.

On the other hand, it is preferable that the tensile strength of the secondary sheath layer is 0.92 to 1.5 kgf / cm 2 and the elongation is 120 to 300%. If the tensile strength is less than 0.92 kgf / cm 2, it may be weak as a sheath material. On the contrary, when the strength exceeds 1.5㎏f / ㎠, the impact strength may be good, but the flexibility may be insufficient, which may adversely affect the optical fiber inside.

In addition, when the elongation of the secondary sheath layer is less than 120%, the elasticity may be insufficient. On the contrary, when the elongation of the secondary sheath layer exceeds 300%, flexibility may be improved.

On the other hand, the ship optical fiber cable manufactured by the method for manufacturing a ship optical fiber cable according to the present invention is a center tension line 100 for imparting a tensile force to the optical fiber cable, the optical fiber 110 associated with the center tension line 100 in the center ), A protective layer 120 provided on an outer surface of the optical fiber 110 to prevent damage to the optical fiber, and a plurality of optical fibers 110 provided with the protective layer 120 in a bundle to form a bundle. A primary sheath provided on an outer surface of the outer heat-resistant layer 130 to protect the bundle from high temperature heat applied in the event of a fire, and an outer surface of the outer heat-resistant layer 130 to prevent damage to the bundle. And a secondary sheath layer 150 surrounding the outer surface of the layer 140 and the primary sheath layer 140.

Each component of the ship's optical fiber cable according to the present invention is the same as or similar to the above description and a detailed description thereof will be omitted.

In addition, the protective layer 120 may further include a separate heat resistant layer 125 on an outer surface thereof.

In addition, the inner surface of the outer heat-resistant layer 130 may further include an inflatable layer 127.

In addition, a braided layer 145 may be further provided on an inner side surface of the secondary sheath layer 150, in which case a polyethylene terephthalate tape layer may be provided on at least one of an inner side surface and an outer side surface of the braided layer 145. 143 and 147 may be further provided.

Example 1

First, an optical fiber having a diameter of 242 ± 7 μm (manufactured by YOFC, Graded-index multimode optical fiber 62.5 / 125 μm) was introduced into a tube having an outer diameter of 2.2 ± 0.2 mm of polybutylene terephthalate (PBT) to cover the optical fiber. The outer surface of the PBT was wound with a tape coated with mica powder having an average particle diameter of 100 µm and a used amount of 120 g / m 2. Next, the coated optical fiber is fed together with three strands and three strands of the same diameter as the tube without the optical fiber introduced therein, and the associated optical fiber is made by using a nonwoven fabric (DYN300S manufactured by Deukyoung Co., Ltd.) as an inflatable layer. After winding the bundle and the inclusion bundle, an outer heat-resistant layer was formed with a tape coated with mica powder, and an olefinic rubber (Elaschem SHF MUD rubber) was coated on the outer circumferential surface of the outer heat-resistant layer with a thickness of about 1 mm to 90 m in length. A primary sheath layer was formed by passing a vulcanization tube having a section 75 m, a cooling section 15 m), an internal pressure of 3.7 bar, and a vulcanization temperature of 200 ° C. at a speed of 5 m / min. Next, the primary sheath layer was sequentially wrapped with polyethylene phthalate tape, steel wire braid and outer polyethylene terephthalate tape, and then the thickness was about 1.3 mm with an olefinic rubber (elasthem SHF MUD rubber) and the total outer diameter was about 16 mm. A secondary sheath layer is formed by passing a vulcanizing tube of 90 m in length (75 m in vulcanization section and 15 m in cooling section), 3.7 bar in internal pressure and 200 ° C vulcanization temperature at a speed of 5 m / min to form a secondary sheath layer. Prepared.

Experimental Example  1 flame retardant

According to the international standard IEC 60332-3 CAT.A, the flame retardancy experiment was performed as shown in FIG. 3, and the results are shown in FIG. 4. Referring to Figures 3 and 4, this means that the ship's fiber optic cable manufactured according to Example 1 should not be burned for more than 2.5 m in the case of heating for 40 minutes with a bundle of 45 cut pieces. Inba, this test result was 53cm showed very good flame retardancy.

Experimental Example  2 fire resistance

According to the international standard IEC 60331-25, the fire resistance test was performed as shown in FIG. 5, and the results are shown in FIG. 6. Referring to Figures 5 and 4, this is that the light loss should not exceed 1.5dB by applying more than 800 ℃ to the marine optical fiber cable manufactured in Example 1, the optical fiber cable for ships according to the present invention is 1039 ℃ After 3 hours of continuous heating, the loss was 0.40dB.

Experimental Example  3 The tensile strength

Tensile strength test was performed according to the international standard IEC 60794-1-2-E1 and the results are shown in FIG. Referring to FIG. 7, this means that when the ship's optical fiber cable manufactured according to Example 1 is prepared at least 100 meters (M) in length and pulled with a force of 200 Newtons per minute, the optical loss does not exceed 0.5 dB. The ship's optical fiber cable according to the present invention showed a very good experimental result with a light loss of 0 dB when the length was 158 meters and the applied force was 1500 Newton.

Experimental Example  4 Compression Experiment

Compression test according to the international standard IEC 60794-1-2-E3 is shown in FIG. Referring to Figure 8, which is to compress the marine optical fiber cable according to the present invention with a force of 1000 Newtons (N) for 5 minutes, the optical loss should not exceed 0.5dB, the marine optical fiber cable according to the present invention As the optical loss is 0dB, very good experimental results are shown.

Experimental Example  5 impact test

The impact test was performed according to the international standard IEC60794-1-2-E4, and the results are shown in FIG. Referring to Figure 9, this is that after the drop having a weight of 5N at the height of 1m to the ship's optical fiber cable manufactured by Example 1, the optical loss should not exceed 0.5dB, ship's optical fiber according to the present invention The cable was subjected to a force of 20 N, resulting in an optical loss of 0 dB.

Experimental Example  6 repeated bending test

The repeated bending test was performed according to the international standard IEC 60794-1-2-E6 and the results are shown in FIG. 10. Referring to Figure 10, this is a ship optical fiber cable according to the invention after repeated 180 ° bending 500 times the optical loss should be 0dB, the marine optical fiber cable according to the invention showed an optical loss of 0dB.

Experimental Example  7 torsion Torsion ) Experiment

The torsion test was carried out according to the international standard IEC 60794-1-2-E7 and the results are shown in FIG. 11. Referring to FIG. 11, this means that the optical fiber cable according to the present invention should have a light loss of 0 dB as a result of twisting 360 ° while pulling the marine optical fiber cable with a force of 55 N. The optical fiber cable of the ship according to the present invention had a light loss of 0 dB.

Experimental Example  8 room temperature bending ( Cable Bend ) Experiment

According to the international standard IEC 60794-1-2-E11, the test was conducted at room temperature, and the results are shown in FIG. 12. After repeating all three cycles with one cycle of five windings in the opposite direction, the optical loss should not exceed 0.5 dB. The optical fiber cable for ships according to the present invention was tested using a cylindrical center member having a diameter of 250 mm. As a result, the light loss of 0dB was very good.

Experimental Example  9 low temperature bending ( Cold Cable Bend ) Experiment

The low temperature bending test was performed in accordance with the international standard IEC 60794-1-2-E11 and is shown in FIG. 13, which is similar to Experimental Example 8 above, but added to the condition that the ambient temperature should be maintained at -40 ° C. for 4 hours to add light loss. This should not exceed 0.5dB, the optical fiber cable for ships according to Example 1 using a cylindrical center material of 250mm diameter showed a very good experimental results with a light loss of 0.01dB.

Experimental Example  10 Water penetration  Experiment

Water permeation experiment according to the international standard IEC 60794-1-2-F5 is shown in Figure 14, which is installed 1m vertically the tube containing water and then connected to the bottom and one end of the specimen and left for 24 hours After that, water should not flow out of the other end of the specimen, the ship's optical fiber cable according to the present invention was not observed at all water leakage.

Experimental Example  11 constant temperature and humidity experiment

It was shown in Figure 15 by a constant temperature and humidity experiment in accordance with the international standard IEC 60794-1-2-F1, which is 4 hours at 20 ℃, 4 hours at -40 ℃, 70 ℃ in the marine optical fiber cable manufactured in Example 1 4 hours at -40 ℃, 4 hours at 70 ℃, 4 hours at 20 ℃ 4 hours after repeated two times the light loss should not exceed 0.5dB, for ships according to the invention It can be seen that the optical cable exhibits a very good optical loss of 0.01 dB.

Experimental Example  12 pollution resistance test

16, 17 and 18 were tested for pollution resistance according to Norwegian Marine Ship Standard NEK606, which is the outermost layer of the optical fiber cable for ships according to Example 1 The secondary sheath layer was cut into fragments, and the fragments were each separated into 100 ° C., 70 ° C., and oils of AROMM googsam (IRM 903), calcium bromide brine, and carbo sea. And impregnated at 70 ° C. with the time being 7 days, 56 days and 56 days, respectively, and the strains of the fragments should be within 130%, 120% and 120%, respectively. Tensile strength and elongation should be in the range of 70 to 130% and 70 to 130%, 75 to 125% and 75 to 125%, and 75 to 125% and 75 to 125%, respectively. In the above order, 104%, 101%, and 103% have very good strains, and tensile strength and elongation are 110% and 76%, 105% and 99%, and 101% and 98%, respectively. Can be.

1 and 2 is a view showing a perspective view and a cross-sectional view of the optical fiber cable for ships according to the present invention.

3 is a photograph photographing the experimental scene according to Experimental Example 1.

4 is a table showing the results according to Experimental Example 1.

5 is a photograph photographing an experimental scene according to Experimental Example 2. FIG.

6 is a table showing the results according to Experimental Example 2. FIG.

7 is a table showing the results according to Experimental Example 3.

8 is a table showing the results according to Experimental Example 4.

9 is a table showing the results according to Experimental Example 5.

10 is a table showing the results according to Experimental Example 6.

11 is a table showing the results according to Experimental Example 7.

12 is a table showing the results according to Experimental Example 8. FIG.

13 is a table showing the results according to Experimental Example 9. FIG.

14 is a table showing the results according to Experimental Example 10.

15 is a table showing the results according to Experimental Example 11. FIG.

16 to 18 are tables showing the results of Experimental Example 12.

Claims (31)

delete S1 step of covering the protective layer surrounding the optical fiber, and having a separate heat-resistant layer on the outer surface of the protective layer; A plurality of optical fibers coated with the protective layer are combined around a central tensile line, and the outer surface thereof is provided to surround the outer heat-resistant layer and the primary sheath layer, wherein the primary sheath layer is coated with a primary thermosetting resin and then 3 to S2 step of forming by vulcanization with steam of 150 to 250 ℃ under 5 atm; And S3 step of forming the secondary sheath layer by applying the outer surface of the primary sheath layer with a secondary heat curing resin and vulcanized in a steam environment of 150 to 250 ℃ under 3 to 5 atm; Method of manufacturing the cable. The method of claim 2, The heat-resistant layer is a manufacturing method of a ship optical fiber cable, characterized in that consisting of mica particles. The method of claim 3, wherein The mica particle is a manufacturing method of the optical fiber cable for ships, characterized in that the average particle diameter of 10 to 200㎛. The method of claim 3, wherein The amount of the mica particles is 130 to 190 g / ㎡ with respect to the area of the heat-resistant layer manufacturing method of the optical fiber cable for ships. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete A center tension line for imparting tensile force to the optical fiber cable; An optical fiber associated with the center tensile line in the center; A protective layer provided on an outer surface of the optical fiber to prevent damage of the optical fiber; The protective layer is a heat-resistant layer provided on the outer surface; An outer heat-resistant layer provided on the outer surface of the bundle by assembling a plurality of optical fibers with the protective layer to the bundle to protect the bundle from high temperature heat applied in the event of a fire; A primary sheath layer provided on an outer surface of the outer heat resistant layer to prevent damage to the bundle; And And a secondary sheath layer surrounding the outer surface of the primary sheath layer. The method of claim 22, The heat-resistant layer is a marine optical fiber cable, characterized in that consisting of mica particles. The method of claim 23, The mica particle is a marine optical fiber cable, characterized in that the average particle diameter of 10 to 200㎛. The method of claim 23, The amount of the mica particles is a ship optical fiber cable, characterized in that 130 to 190 g / ㎡ with respect to the area of the heat-resistant layer. delete delete delete delete delete delete

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