CN112466531A - High-strength anti-torsion flame-retardant optical cable - Google Patents
High-strength anti-torsion flame-retardant optical cable Download PDFInfo
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- CN112466531A CN112466531A CN202011351125.0A CN202011351125A CN112466531A CN 112466531 A CN112466531 A CN 112466531A CN 202011351125 A CN202011351125 A CN 202011351125A CN 112466531 A CN112466531 A CN 112466531A
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- layer
- flame
- optical cable
- retardant
- coated
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
Abstract
The invention discloses a high-strength anti-torsion flame-retardant optical cable in the technical field of optical cables, which comprises: the inner cores are annularly arranged; the middle protective layer is coated on the side walls of the inner cores; the armor layer is coated on the outer wall of the middle protective layer; the flame-retardant layer is coated on the outer wall of the armor layer; the anti-distortion layer is coated on the outer wall of the flame-retardant layer; the anti-twisting cable comprises an anti-twisting layer, an outer protective layer, an inner protective layer and a flame-retardant layer, wherein the outer protective layer is coated on the outer wall of the anti-twisting layer, the inner protective layer is made of silicon rubber, the middle protective layer is formed by mixing epoxy resin and aluminum hydroxide powder, and the flame-retardant layer is formed by mixing ceramic vulcanized silicon rubber, a flame-retardant polyolefin base material, a halogen-free high-expansion flame-retardant smoke suppressant and carbon fibers.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to a high-strength anti-torsion flame-retardant optical cable.
Background
Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath, and metals such as gold, silver, copper and aluminum are not contained in the optical cable, so that the optical cable generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. Namely: a cable formed by subjecting an optical fiber (optical transmission carrier) to a certain process. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and further comprises a waterproof layer, a buffer layer, an insulated metal wire and other components according to requirements.
The inside a plurality of sinle silks of current optical cable are the dispersion setting more between, and after the optical cable was twisted, the winding that rubs each other between a plurality of sinle silks led to the damage of sinle silk easily to the fire-retardant layer of current optical cable receives the corruption of various corrosives easily, thereby causes the fire-retardant effect of the damage influence optical cable on fire-retardant layer.
Disclosure of Invention
The invention aims to provide a high-strength anti-torsion flame-retardant optical cable, which aims to solve the problems that a plurality of wire cores in the existing optical cable are mostly arranged in a dispersed manner, the wire cores are easy to damage due to mutual friction and winding among the plurality of wire cores after the optical cable is twisted, and the flame-retardant layer of the existing optical cable is easy to corrode by various corrosive substances, so that the flame-retardant effect of the optical cable is affected due to the damage of the flame-retardant layer.
In order to achieve the purpose, the invention provides the following technical scheme: a high strength, twist resistant, flame retardant optical cable comprising:
the inner cores are annularly arranged;
the middle protective layer is coated on the side walls of the inner cores;
the armor layer is coated on the outer wall of the middle protective layer;
the flame-retardant layer is coated on the outer wall of the armor layer;
the anti-distortion layer is coated on the outer wall of the flame-retardant layer;
the outer jacket, the outer jacket cladding is in on the outer wall of antitorque layer.
Preferably, the inner core comprises:
a cable core;
the inner protection layer is coated on the outer wall of the optical cable core and is made of silicon rubber.
Preferably, the middle protective layer is formed by mixing epoxy resin and aluminum hydroxide powder.
Preferably, the flame-retardant layer is formed by mixing ceramic vulcanized silicone rubber, a flame-retardant polyolefin base material, a halogen-free high-expansion flame-retardant smoke suppressant and carbon fibers.
Preferably, the distortion prevention layer includes:
a polyurethane rubber sleeve;
the spiral rods are embedded in the polyurethane rubber sleeve, and the spiral directions of the adjacent two spiral rods are opposite.
Compared with the prior art, the invention has the beneficial effects that: the invention can effectively improve the anti-torsion capability and the flame retardance of the optical cable, improve the service life of the optical cable, and process a plurality of inner cores through the epoxy resin to be fixed together, so that the inner cores form a whole, and can effectively prevent the optical cable core damage caused by the friction winding among the plurality of cores when being twisted, the flame retardance of the epoxy resin can be enhanced by adding the aluminum hydroxide into the epoxy resin, so as to improve the flame retardance of the whole optical cable, the invention adopts the flame-retardant polyolefin base material and adds the halogen-free high-expansion flame-retardant smoke-inhibiting agent, when the optical cable is burnt, a uniform porous carbon foam layer is generated on the surface of the polymer protective layer, the layer has the functions of heat insulation, oxygen insulation and smoke inhibition, can prevent molten drops from generating, has stronger nucleation, and ensures that the optical cable has not only high oxygen index, good flame-retardant effect, low smoke quantity, high light transmittance and strong nucleation after burning, the combustion residue is a harder profile layer, the ceramic vulcanized silicone rubber flame retardant coating is above the temperature during combustion, does not melt and does not drip, the ceramic vulcanized silicone rubber flame retardant coating is converted into a hard ceramic shell in a short time to form a good heat insulation layer and block the continuous combustion of flame, the longer the combustion time is, the higher the temperature is, the more obvious the ceramic is, the temperature can reach 1200-1500 ℃ for fire resistance, the carbon fiber can resist the corrosion of various corrosive substances, the flame retardant coating is effectively protected, the flame retardant coating can be prevented from being corroded by the corrosive substances, the flame retardant effect is reduced, when the optical cable is twisted, the twisting forces can be mutually offset by the screw rods with opposite spiral directions, and therefore the optical cable core can be effectively guaranteed not to be damaged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a passivation structure according to the present invention;
FIG. 3 is a schematic view of the structure of the anti-twist layer according to the present invention;
FIG. 4 is a schematic view of an anti-kink layer according to the present invention.
In the figure: 100 inner cores, 110 optical cable cores, 120 inner cores, 200 middle protective layers, 300 armor layers, 400 flame retardant layers, 500 anti-distortion layers, 510 polyurethane rubber sleeves, 520 spiral rods and 600 outer protective layers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a high-strength anti-torsion flame-retardant optical cable, which can effectively improve the anti-torsion capability and the flame retardance of the optical cable and prolong the service life of the optical cable, and please refer to fig. 1, which comprises the following components: an inner core 100, a middle sheath 200, an armor layer 300, a flame retardant layer 400, an anti-twisting layer 500, and an outer sheath 600;
referring to fig. 1-2, a plurality of cores 100 are annularly disposed, and the cores 100 include:
a cable core 110;
the inner protective layer 120 is coated on the outer wall of the optical cable core 110, and the inner protective layer 120 is made of silicon rubber;
referring to fig. 1-2 again, the middle protective layer 200 is coated on the inner and outer sidewalls of the plurality of inner protective layers 120, the middle protective layer 200 is formed by mixing epoxy resin and aluminum hydroxide powder, the plurality of inner cores 100 are fixed together by processing the epoxy resin, so that the plurality of inner cores 100 form a whole, and when the optical cable core 110 is twisted, the optical cable core 110 can be effectively prevented from being damaged due to friction winding among the plurality of core 100, and the flame retardancy of the epoxy resin can be enhanced by adding the aluminum hydroxide into the epoxy resin, so that the flame retardancy of the entire optical cable is improved;
referring to fig. 1 again, the armor layer 300 is coated on the outer wall of the middle-sheath layer 200;
referring to fig. 1 again, the outer wall of the armor layer 300 is coated with the flame retardant layer 400, the flame retardant layer 400 is formed by mixing ceramic vulcanized silicone rubber, a flame retardant polyolefin base material, a halogen-free high expansion flame retardant smoke suppressant and carbon fibers, the flame retardant polyolefin base material is adopted, the halogen-free high expansion flame retardant smoke suppressant is added, when the optical cable is burned, a uniform porous carbon foam layer is generated on the surface of the polymer sheath layer, the layer has the functions of heat insulation, oxygen isolation and smoke suppression, can prevent molten drop generation, has strong nucleation, enables the optical cable to have not only high oxygen index, good flame retardant effect, low smoke generation amount and high light transmittance, but also has strong nucleation after burning, the burning residue is a hard profile layer, the ceramic vulcanized silicone rubber flame retardant layer is not melted and dropped during burning at more than 500 ℃, and is transformed into a hard ceramic shell in a short time to form a good heat insulation layer, the flame is blocked from continuing to burn, the longer the burning time is, the higher the temperature is, the more obvious the ceramic is, the fire resistance can reach 1200-1500 ℃, the carbon fiber can resist the corrosion of various corrosive substances, the flame-retardant layer 400 is effectively protected, the flame-retardant layer can be prevented from being corroded by the corrosive substances, and the flame-retardant effect is reduced;
referring to fig. 1 and 3-4, the anti-twisting layer 500 is coated on the outer wall of the flame retardant layer 400, and the anti-twisting layer 500 includes:
the polyurethane rubber sleeve 510 is coated on the outer wall of the flame retardant layer 400;
the plurality of spiral rods 520 are embedded in the polyurethane rubber sleeve 510, the spiral directions of two adjacent spiral rods 520 are opposite, when the optical cable is twisted, the spiral rods 520 with opposite spiral directions can mutually offset the twisting force, so that the optical cable core 110 can be effectively protected from being damaged;
the outer jacket 600, the outer jacket 600 cladding is on the outer wall of antitorque layer 500.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A high strength, twist resistant, flame retardant optical cable, characterized by: the method comprises the following steps:
a plurality of inner cores (100), the plurality of inner cores (100) being annularly arranged;
a middle sheath (200), wherein the middle sheath (200) is coated on the side walls of the inner cores (100);
the armor layer (300), the armor layer (300) is coated on the outer wall of the middle sheath layer (200);
the flame retardant layer (400), the flame retardant layer (400) is coated on the outer wall of the armor layer (300);
an anti-twist layer (500), wherein the anti-twist layer (500) is coated on the outer wall of the flame retardant layer (400);
an outer jacket (600), the outer jacket (600) cladding is in on the outer wall of antitorque layer (500).
2. A high strength twist resistant flame retardant optical cable according to claim 1, wherein: the inner core (100) comprises:
a cable core (110);
the inner protection layer (120) is coated on the outer wall of the optical cable core (110), and the inner protection layer (120) is made of silicon rubber.
3. A high strength twist resistant flame retardant optical cable according to claim 1, wherein: the middle protective layer (200) is formed by mixing epoxy resin and aluminum hydroxide powder.
4. A high strength twist resistant flame retardant optical cable according to claim 1, wherein: the flame-retardant layer (400) is formed by mixing ceramic vulcanized silicone rubber, a flame-retardant polyolefin base material, a halogen-free high-expansion flame-retardant smoke suppressant and carbon fibers.
5. A high strength twist resistant flame retardant optical cable according to claim 1, wherein: the anti-twisting layer (500) comprises:
a polyurethane rubber sleeve (510);
the spiral rods (520), a plurality of spiral rods (520) are embedded in the polyurethane rubber sleeve (510), and the spiral directions of two adjacent spiral rods (520) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011351125.0A CN112466531A (en) | 2020-11-27 | 2020-11-27 | High-strength anti-torsion flame-retardant optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011351125.0A CN112466531A (en) | 2020-11-27 | 2020-11-27 | High-strength anti-torsion flame-retardant optical cable |
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|---|---|
| CN112466531A true CN112466531A (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011351125.0A Pending CN112466531A (en) | 2020-11-27 | 2020-11-27 | High-strength anti-torsion flame-retardant optical cable |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237462A (en) * | 1999-04-14 | 1999-12-08 | 江苏华能电缆总厂 | Fire-fighting high flame-proofing protective layer material |
| CN103064163A (en) * | 2013-01-18 | 2013-04-24 | 长飞光纤光缆有限公司 | Flame-retardant and fire-resistant optical cable |
| CN110286454A (en) * | 2019-07-24 | 2019-09-27 | 北京亨通斯博通讯科技有限公司 | A kind of high fire-retardance special optical cable |
| CN210443321U (en) * | 2019-09-09 | 2020-05-01 | 江苏启盛线缆有限公司 | Fire-resistant damp-proof cable for subway |
| CN210605123U (en) * | 2019-09-29 | 2020-05-22 | 江苏东腾线缆科技有限公司 | Fireproof optical cable |
| CN211062505U (en) * | 2019-12-04 | 2020-07-21 | 上海朗达电缆（集团）有限公司 | Fireproof power cable |
| CN211150177U (en) * | 2020-01-07 | 2020-07-31 | 安徽鸿海电缆有限公司 | Mining stretch-proofing photoelectric composite cable |
| CN211350171U (en) * | 2020-03-14 | 2020-08-25 | 升辉电线电缆(深圳)有限公司 | Inner-woven and outer-extruded rubber electric wire |
| CN211554410U (en) * | 2020-03-12 | 2020-09-22 | 扬州高通光电科技有限公司 | Bending-resistant moisture-proof optical cable |
| CN211628747U (en) * | 2020-04-16 | 2020-10-02 | 安徽国电电缆股份有限公司 | Waterproof fireproof cable of high elasticity |
-
2020
- 2020-11-27 CN CN202011351125.0A patent/CN112466531A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237462A (en) * | 1999-04-14 | 1999-12-08 | 江苏华能电缆总厂 | Fire-fighting high flame-proofing protective layer material |
| CN103064163A (en) * | 2013-01-18 | 2013-04-24 | 长飞光纤光缆有限公司 | Flame-retardant and fire-resistant optical cable |
| CN110286454A (en) * | 2019-07-24 | 2019-09-27 | 北京亨通斯博通讯科技有限公司 | A kind of high fire-retardance special optical cable |
| CN210443321U (en) * | 2019-09-09 | 2020-05-01 | 江苏启盛线缆有限公司 | Fire-resistant damp-proof cable for subway |
| CN210605123U (en) * | 2019-09-29 | 2020-05-22 | 江苏东腾线缆科技有限公司 | Fireproof optical cable |
| CN211062505U (en) * | 2019-12-04 | 2020-07-21 | 上海朗达电缆（集团）有限公司 | Fireproof power cable |
| CN211150177U (en) * | 2020-01-07 | 2020-07-31 | 安徽鸿海电缆有限公司 | Mining stretch-proofing photoelectric composite cable |
| CN211554410U (en) * | 2020-03-12 | 2020-09-22 | 扬州高通光电科技有限公司 | Bending-resistant moisture-proof optical cable |
| CN211350171U (en) * | 2020-03-14 | 2020-08-25 | 升辉电线电缆(深圳)有限公司 | Inner-woven and outer-extruded rubber electric wire |
| CN211628747U (en) * | 2020-04-16 | 2020-10-02 | 安徽国电电缆股份有限公司 | Waterproof fireproof cable of high elasticity |
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Application publication date: 20210309 |