CN110739098B - Miniature easily-branched rat-proof photoelectric composite cable for wireless small base station and preparation method thereof - Google Patents
Miniature easily-branched rat-proof photoelectric composite cable for wireless small base station and preparation method thereof Download PDFInfo
- Publication number
- CN110739098B CN110739098B CN201911012584.3A CN201911012584A CN110739098B CN 110739098 B CN110739098 B CN 110739098B CN 201911012584 A CN201911012584 A CN 201911012584A CN 110739098 B CN110739098 B CN 110739098B
- Authority
- CN
- China
- Prior art keywords
- rat
- proof
- parts
- layer
- protective layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H01B7/0045—Cable-harnesses
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/30—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- 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
- H01B7/08—Flat or ribbon cables
- H01B7/0869—Flat or ribbon cables comprising one or more armouring, tensile- or compression-resistant elements
-
- 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
-
- 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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
-
- 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
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Birds (AREA)
- Medicinal Chemistry (AREA)
- Insects & Arthropods (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a miniature easily-branched rat-proof photoelectric composite cable for a wireless small base station and a preparation method thereof, wherein the miniature easily-branched rat-proof photoelectric composite cable comprises an optical unit positioned in the center, the optical unit comprises a wire core and a rat-proof protective layer coated outside the wire core, the rat-proof protective layer comprises an inner protective layer, a middle protective layer and an outer protective layer, the inner protective layer is a metal armor layer, and the middle protective layer is a rat-proof layer; the rat-proof layer comprises 10-12 parts by weight of PVC plastic, 23-25 parts by weight of ABS plastic, 1.6-1.8 parts by weight of compatilizer ABS-g-MAH and 2-4 parts by weight of plant rat-proof agent; the botanical ratproof agent comprises 35-41 parts of capsaicin, 42-44 parts of berberine, 12-14 parts of croton toxin, 6-8 parts of kurarinone and 3-5 parts of tobacco essence by weight; the outer wall of the outer protective layer is serrated, and is provided with a plurality of convex parts and a plurality of concave parts along the circumferential direction, and the convex parts and the concave parts are sequentially and alternately arranged. The rat-proof photoelectric composite cable has the advantages of remarkable rat-proof effect, light weight and low cost.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to a miniature easily-branched rat-proof photoelectric composite cable for a wireless small base station, and further relates to a preparation method of the miniature easily-branched rat-proof photoelectric composite cable for the wireless small base station.
Background
At present, 5G has become an important place for competition of large operators in the world as one of the marks of future technology development, the commercial date of 5G is more and more recent, and the attention on small base stations in the market is also more and more multiplied. Since the 5G running in the higher frequency band faces the signal coverage problem, the small base station can play the role of a 'replenisher' to expand the signal coverage range. The problem of excessive power consumption of the mobile device due to the fact that signals are too weak and radio frequency transmission power is enhanced can be solved. The small base station has the characteristics of miniaturization, low transmitting power, good controllability, intellectualization, flexible networking and the like, has stricter requirements on the size and the function of an optical cable along with the large application of the small base station, and simultaneously needs to ensure the transmission of optical signals and the supply of an alternating current power supply. The existing photoelectric composite cable has larger diameter, heavier weight and more complex construction.
On the other hand, the optical cable of the small base station is required to have the rat-proof function, and at present, the rat-proof optical cable mainly has two types: one is physical protection against rodents and the other is chemical protection against rodents. The physical protection against rodents usually adopts the mode of armor protection, and the effective method of going includes that metal tape armor, stainless steel armor or nylon are protected, makes the rat bite and can not destroy inside optical cable, plays the effect of protection against rodents. Chemical ratproof chemical additives for ratproofing are usually added into the outer sheath material of the optical cable, so that the ratoons give up biting the optical cable after smelling chemical odor, thereby achieving the ratproofing effect on the optical cable. Generally, the effect of physics protection against rodents is better, but armor's is with high costs, and optical cable production efficiency is low, and optical cable weight is heavy, and the thick construction difficulty of cable footpath increases the use cost of optical cable. The biological rat-proofing agent or the chemical rat-proofing agent used in the chemical rat-proofing can cause environmental pollution, and the rat-proofing effect is not ideal.
Disclosure of Invention
The invention aims to provide a miniature easily-branched rat-proof photoelectric composite cable which is used for a wireless small base station and has the advantages of obvious rat-proof effect, light weight and low cost, and also relates to a preparation method of the photoelectric composite cable.
In order to solve the technical problem, the invention provides a miniature easily-branched rat-proof photoelectric composite cable for a wireless small base station, which comprises an optical unit positioned in the center, electric units symmetrically arranged at two sides of the optical unit, and an outer sheath for coating the optical unit and the electric units, wherein the optical unit comprises a wire core and a rat-proof protective layer coated outside the wire core, the rat-proof protective layer comprises an inner protective layer, a middle protective layer and an outer protective layer, the inner protective layer is a metal armor layer, and the middle protective layer is a rat-proof layer; the rat-proof layer comprises 10-12 parts by weight of PVC plastic, 23-25 parts by weight of ABS plastic, 1.6-1.8 parts by weight of compatilizer ABS-g-MAH and 2-4 parts by weight of plant rat-proof agent; the botanical ratproof agent comprises 35-41 parts of capsaicin, 42-44 parts of berberine, 12-14 parts of croton toxin, 6-8 parts of kurarinone and 3-5 parts of tobacco essence in parts by weight; the outer wall of the outer protection layer is in a sawtooth shape, a plurality of convex parts and a plurality of concave parts are arranged along the circumferential direction of the outer protection layer, and the convex parts and the concave parts are sequentially and alternately arranged.
Preferably, the thickness of the convex part in the radial direction is 3 to 4 times the thickness of the concave part in the radial direction.
Preferably, the capsaicin is extracted from capsicum, the berberine is extracted from coptis, the croton toxin is extracted from croton, the oxymatrine is extracted from sophora flavescens, and the tobacco extract is extracted from tobacco.
According to the technical scheme, the photoelectric composite cable has the advantages that the three rat-proof protective layers are arranged on the surface of the wire core of the internal optical unit, the first rat-proof protective layer is a conventional metal armor layer to form a physical rat-proof layer, and the rat-proof layer has a remarkable rat-proof effect; the second rat-proof protective layer is a rat-proof agent protective layer to form a chemical rat-proof layer, plant rat-proof agents used for generating peculiar smell in the chemical rat-proof layer are all extracted from plants, the environment cannot be polluted, meanwhile, the thickness of the physical rat-proof layer can be reduced on the premise of achieving the physical rat-proof effect in the prior art by adopting the cooperation of physical rat-proof and chemical rat-proof, for example, a metal armor layer with the thickness of 8-10 mm needs to be designed in the prior art under the condition of achieving a certain rat-proof effect requirement; adopt the protection against rodents protective layer of this technical scheme of application, the same metal armor of 2 ~ 3mm thickness, cooperate the protection against rodents agent protective layer of 3.2 ~ 3.8mm thickness, cooperate the outer protective layer of 4.2 ~ 4.5mm again. The thickness attenuation of metal armor for this application technical scheme's protection against rodents protective layer compares in prior art can greatly reduced design cost and weight.
Furthermore, a plurality of convex parts and concave parts are designed on the third layer of the rat-proof layer along the circumferential direction, the strength of the concave parts is weaker than that of the convex parts compared with that of the concave parts which are sunken in the convex parts, the concave parts are damaged before the convex parts when a rat bites, namely, the concave parts are easy to bite, the rat is indirectly induced to bite from the concave parts preferentially, once the rat bites the second layer of the rat-proof layer, the rat bites the concave parts due to odor, the time difference from the rat bites to the rat bites is shortened, and the convex parts are protected to a certain.
On the other hand, the third layer of rat-proof layer is provided with a plurality of convex parts and concave parts along the circumferential direction, the concave parts are recessed compared with the convex parts, the strength of the concave parts is weaker than that of the convex parts, the concave parts are damaged before the convex parts when a rat bites, namely, the rat bites and is positioned at the concave parts and contacts the second layer of rat-proof layer firstly, the rat bites and is abandoned due to smell when the rat bites the second layer of rat-proof layer, the convex parts are partially reserved at the moment, and the partially reserved convex parts can provide effective lateral pressure resistance and impact strength. Particularly, when the thickness of the convex part in the radial direction is 3 to 4 times of the thickness of the concave part in the radial direction, the lateral pressure resistance and the impact strength are optimal, and when the lateral pressure resistance and the impact strength exceed the range, the lateral pressure resistance and the impact strength are not ideal.
In a preferred embodiment of the invention, the outer sheath is further provided with a strap between the optical unit and the electrical unit, the strap serving as an electrical unit tear, the electrical unit tear being produced when extruded through the die.
In a preferred embodiment of the present invention, the outer sheath further comprises a light unit tear port disposed between the electrical unit tear port and the light unit, the light unit tear port being created when the light unit tear port is extruded through the die.
According to the technical scheme, the photoelectric composite cable comprises the optical unit and the electric unit, optical signals are transmitted through the optical unit, and the alternating current power supply is transmitted through the electric unit. When the optical unit is actually used, the electric unit can be simply and conveniently separated from the optical unit through the tearing opening of the electric unit, so that the design of easy branching is realized; the outer sheath can be simply and conveniently torn through the optical unit tearing opening to expose the loose tube and take out the wire core, so that the construction time is saved, and the construction progress is accelerated.
In a preferred embodiment of the invention, the wire core is further provided with a non-metal reinforced layer, the non-metal reinforced layer is positioned on the inner side of the rat-proof protective layer and is formed by twisting or lapping aramid fiber or glass fiber yarn.
According to the technical scheme, the nonmetal reinforcing layer formed by twisting or lapping aramid fiber or glass fiber yarns plays roles in blocking water and improving the tensile property of the wire core, and simultaneously plays a role in preventing the rat bite, so that the rat bite prevention protective layer in the metal armor layer is formed.
In a preferred embodiment of the invention, the outer sheath is internally provided with a reinforcing piece between the optical unit and the electric unit, the reinforcing piece is arranged in parallel with a feeder line of the electric unit, and the reinforcing piece is a high-carbon phosphated steel wire or a non-metal glass fiber reinforced rod.
According to the technical scheme of the invention, the reinforcing piece formed by the high-carbon phosphated steel wire or the non-metallic glass fiber reinforcing rod provides powerful strength support for the photoelectric composite cable.
In a preferred embodiment of the present invention, the core further comprises a loose tube made of polybutylene terephthalate and an optical fiber arranged in the loose tube, wherein the optical fiber is a single-mode optical fiber or a multi-mode optical fiber.
In a preferred embodiment of the present invention, a water blocking object is disposed between the optical fibers in the loose tube, and the water blocking object is a water blocking yarn or a water blocking fiber paste.
In order to solve the technical problem, the invention also provides a preparation method of the miniature easily-branched rat-proof photoelectric composite cable for the wireless small base station, which comprises the following steps,
(1) extruding a polybutylene terephthalate loose tube outside an optical fiber under the process conditions of controlling the paying-off tension of the optical fiber to be 60g +/-5 g, controlling the taking-up tension to be 65g +/-5 g and controlling the excess length of the optical fiber to be 0-0.6 per mill, wherein a water-blocking substance is arranged in the loose tube around the optical fiber;
(2) wrapping or stranding aramid fiber or glass fiber yarns on the loose tube obtained in the step (1) to prepare a wire core;
(3) wrapping the metal armor layer outside the wire core obtained in the step (2), and sequentially extruding a rat-proof layer and an outer protective layer outside the metal armor layer to form an optical unit based on a double-layer co-extrusion process;
(4) taking a group of the optical unit, two reinforcing pieces and two groups of electric units obtained in the step (3), wherein the optical unit, the reinforcing pieces and the electric units are all placed in parallel, the two groups of electric units are symmetrically distributed on two sides of the optical unit by taking the optical unit as a center, and the two groups of reinforcing pieces are respectively positioned on two sides of the optical unit and between the optical unit and the electric unit;
(5) extruding the outer sheath outside the light unit, the reinforcing member and the electric unit which are arranged in the step (4).
The invention has the beneficial effects that:
the rat-proof photoelectric composite cable adopts a multi-layer rat-proof design, the metal armor layer, the rat-proof layer and the outer protective layer are sequentially stacked on the surface of the wire core of the optical unit, the rat-proof is induced indirectly through the physical rat-proof layer, the chemical rat-proof layer and the outer protective layer of the metal armor layer, and the metal armor layer is matched layer by layer and is associated layer by layer, so that the remarkable rat-proof effect is achieved.
The rat-proof photoelectric composite cable prepared based on the preparation method adopts a multi-layer rat-proof design, the metal armor layer, the rat-proof layer and the outer protective layer are sequentially stacked on the surface of the wire core of the optical unit, the rat-proof is induced indirectly through the physical rat-proof of the metal armor layer, the chemical rat-proof of the rat-proof layer and the outer protective layer, and the rat-proof effect is achieved through layer-by-layer matching and layer-by-layer association.
Drawings
Fig. 1 is a schematic structural view of an optical-electrical composite cable according to a preferred embodiment of the present invention.
The reference numbers in the figures illustrate: 2-electrical unit, 4-outer sheath, 6-loose tube, 8-inner protective layer, 10-middle protective layer, 12-outer protective layer, 14-concave part, 16-convex part, 17-optical fiber, 18-sling, 20-optical unit tearing opening, 22-non-metal reinforced layer, 24-reinforcing piece and 26-water-blocking yarn.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Examples
The embodiment provides a miniature easily-branched rat-proof photoelectric composite cable for a wireless small base station, which is flat as a whole and comprises an optical unit positioned in the center, electric units 2 symmetrically arranged on two sides of the optical unit, and an outer sheath 4 covering the optical unit and the electric units 2. The light unit is located the center, and two sets of electric unit 2 use the light unit to set up in the both sides of light unit as central symmetry, are equipped with between light unit and the electric unit with both parallel reinforcements 24, the center of light unit, electric unit and reinforcements is located same straight line. In the technical solution of this embodiment, the reinforcement 24 is a high-carbon phosphated steel wire or a non-metallic glass fiber reinforced rod. A hanging strip 18 is arranged on the outer sheath 4 between the optical unit and the electric unit, and is used as an electric unit tearing opening which is generated when the electric unit tearing opening is extruded through a die; an optical unit tearing opening 20 is arranged on the outer sheath 4 between the electric unit tearing opening and the optical unit, and the optical unit tearing opening 20 is generated when the die extrudes.
The optical unit comprises a wire core and a rat-proof protective layer coated outside the wire core. The wire core comprises a polybutylene terephthalate loose tube 6 and optical fibers 17 positioned in the loose tube 6, the optical fibers 17 are single-mode optical fibers or multi-mode optical fibers, and water blocking objects are arranged between the optical fibers 17 in the loose tube 6. In the technical scheme of the embodiment, the water-blocking object is water-blocking yarn 26 or water-blocking fiber paste. Above-mentioned loose 6 outer transposition of sleeve pipe or around having non-metal reinforcement layer, among the technical scheme of this embodiment, this non-metal reinforcement layer is formed by aramid fiber or glass fiber yarn through transposition or around the package.
The ratproof protective layer comprises an inner protective layer 8, an intermediate protective layer 10 and an outer protective layer 12, wherein the inner protective layer 8 is a metal armor layer, the intermediate protective layer 10 is a ratproof layer, the outer wall of the outer protective layer 12 is in a sawtooth shape and is provided with a plurality of convex parts 16 and a plurality of concave parts 14 along the circumferential direction, the convex parts 16 and the concave parts 14 are sequentially and alternately arranged, and the thickness of the convex parts 16 in the radial direction is 3-4 times of that of the concave parts 14 in the radial direction.
In the technical scheme of the embodiment, the rat-proof layer comprises the following specific components in percentage by weight:
TABLE 1
In the technical scheme of the embodiment, the specific components of the plant rodenticide are as follows:
TABLE 2
The capsaicin is extracted from Capsici fructus, the berberine is extracted from Coptidis rhizoma, the croton toxin is extracted from fructus crotonis, the kurarinone is extracted from radix Sophorae Flavescentis, and the tobacco extract is extracted from tobacco.
The preparation method of the miniature easily-branched rat-proof photoelectric composite cable for the wireless small base station comprises the following steps,
(1) extruding a polybutylene terephthalate loose tube outside the optical fiber under the process conditions of controlling the paying-off tension of the optical fiber to be 60g +/-5 g, controlling the taking-up tension to be 65g +/-5 g and controlling the excess length of the optical fiber to be 0-0.6 per mill, wherein a water-blocking substance is arranged in the loose tube around the optical fiber;
(2) wrapping or stranding aramid fiber or glass fiber yarns on the loose tube obtained in the step (1) to prepare a wire core;
(3) wrapping the metal armor layer outside the wire core obtained in the step (2), and sequentially extruding a rat-proof layer and an outer protective layer outside the metal armor layer to form an optical unit based on a double-layer co-extrusion process;
(4) taking a group of the optical unit, two reinforcing pieces and two groups of electric units obtained in the step (3), wherein the optical unit, the reinforcing pieces and the electric units are all placed in parallel, the two groups of electric units are symmetrically distributed on two sides of the optical unit by taking the optical unit as a center, and the two groups of reinforcing pieces are respectively positioned on two sides of the optical unit and between the optical unit and the electric unit;
(5) extruding the outer sheath outside the light unit, the reinforcing member and the electric unit which are arranged in the step (4).
The rat-proof photoelectric composite cable adopts a multi-layer rat-proof design, the metal armor layer, the rat-proof layer and the outer protective layer are sequentially stacked on the surface of the wire core of the optical unit, the rat-proof is induced indirectly through the physical rat-proof layer, the chemical rat-proof layer and the outer protective layer of the metal armor layer, and the metal armor layer is matched layer by layer and is associated layer by layer, so that the remarkable rat-proof effect is achieved.
The photoelectric composite cable prepared by the preparation method adopts a multi-layer rat-proof design, the metal armor layer, the rat-proof layer and the outer protective layer are sequentially stacked on the surface of the wire core of the optical unit, the rat-proof is induced indirectly through the physical rat-proof of the metal armor layer, the chemical rat-proof of the rat-proof layer and the outer protective layer, and the rat-proof effect is achieved through layer-by-layer coordination and layer-by-layer association.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. The utility model provides a wireless little basic station is with miniature readily branchs protection against rodents photoelectricity composite cable, is including the optical unit that is located the center, the electric unit of symmetry setting in optical unit both sides to and the oversheath of cladding optical unit and electric unit, its characterized in that: the optical unit comprises a wire core and a rat-proof protective layer coated outside the wire core, the rat-proof protective layer comprises an inner protective layer, a middle protective layer and an outer protective layer, the inner protective layer is a metal armor layer, and the middle protective layer is a rat-proof layer; the rat-proof layer comprises 10-12 parts by weight of PVC plastic, 23-25 parts by weight of ABS plastic, 1.6-1.8 parts by weight of compatilizer ABS-g-MAH and 2-4 parts by weight of plant rat-proof agent; the botanical ratproof agent comprises 35-41 parts of capsaicin, 42-44 parts of berberine, 12-14 parts of croton toxin, 6-8 parts of kurarinone and 3-5 parts of tobacco essence in parts by weight; the outer wall of the outer protection layer is in a sawtooth shape, a plurality of convex parts and a plurality of concave parts are arranged along the circumferential direction of the outer protection layer, and the convex parts and the concave parts are sequentially and alternately arranged.
2. The micro easy-branching rat-proof photoelectric composite cable for the wireless small base station according to claim 1, characterized in that: the thickness of the convex part in the radial direction is 3-4 times of that of the concave part in the radial direction.
3. The micro easy-branching rat-proof photoelectric composite cable for the wireless small base station according to claim 1, characterized in that: the capsaicin is extracted from capsicum, the berberine is extracted from coptis, the croton toxin is extracted from croton, the oxymatrine is extracted from sophora flavescens, and the tobacco extract is extracted from tobacco.
4. The micro easy-branching rat-proof photoelectric composite cable for the wireless small base station according to claim 1, characterized in that: and an optical unit tearing opening is formed in the outer protective sleeve between the electric unit tearing opening and the optical unit and is generated when the optical unit tearing opening is extruded through a die.
5. The micro easy-branching rat-proof photoelectric composite cable for the wireless small base station according to claim 1, characterized in that: the cable core is provided with a nonmetal reinforcing layer, the nonmetal reinforcing layer is positioned on the inner side of the rat-proof protective layer and is formed by twisting or wrapping aramid fibers or glass fiber yarns.
6. The micro easy-branching rat-proof photoelectric composite cable for the wireless small base station according to claim 1, characterized in that: the light unit is arranged in the outer sheath, the electric unit is arranged in the outer sheath, the reinforcing part is arranged in parallel with a feeder line of the electric unit, and the reinforcing part is a high-carbon phosphated steel wire or a non-metal glass fiber reinforcing rod.
7. The micro easy-branching rat-proof photoelectric composite cable for the wireless small base station according to claim 1, characterized in that: the cable core comprises a polybutylene terephthalate loose tube and an optical fiber positioned in the loose tube, and the optical fiber is a single-mode optical fiber or a multi-mode optical fiber.
8. The micro easy-branching rat-proof photoelectric composite cable for the wireless small base station according to claim 7, wherein: and water-blocking objects are arranged among the optical fibers in the loose tubes, and the water-blocking objects are water-blocking yarns or water-blocking fiber paste.
9. The method for preparing the miniature easily-branched rat-proof photoelectric composite cable for the wireless small base station as claimed in any one of claims 1 to 8, wherein the method comprises the following steps: comprises the following steps of (a) carrying out,
(1) extruding a polybutylene terephthalate loose tube outside an optical fiber under the process conditions of controlling the paying-off tension of the optical fiber to be 60g +/-5 g, controlling the taking-up tension to be 65g +/-5 g and controlling the excess length of the optical fiber to be 0-0.6 per mill, wherein a water-blocking substance is arranged in the loose tube around the optical fiber;
(2) wrapping or stranding aramid fiber or glass fiber yarns on the loose tube obtained in the step (1) to prepare a wire core;
(3) wrapping the metal armor layer outside the wire core obtained in the step (2), and sequentially extruding a rat-proof layer and an outer protective layer outside the metal armor layer to form an optical unit based on a double-layer co-extrusion process;
(4) taking a group of the optical unit, two reinforcing pieces and two groups of electric units obtained in the step (3), wherein the optical unit, the reinforcing pieces and the electric units are all placed in parallel, the two groups of electric units are symmetrically distributed on two sides of the optical unit by taking the optical unit as a center, and the two groups of reinforcing pieces are respectively positioned on two sides of the optical unit and between the optical unit and the electric unit;
(5) extruding the outer sheath outside the light unit, the reinforcing member and the electric unit which are arranged in the step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012584.3A CN110739098B (en) | 2019-10-23 | 2019-10-23 | Miniature easily-branched rat-proof photoelectric composite cable for wireless small base station and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012584.3A CN110739098B (en) | 2019-10-23 | 2019-10-23 | Miniature easily-branched rat-proof photoelectric composite cable for wireless small base station and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110739098A CN110739098A (en) | 2020-01-31 |
| CN110739098B true CN110739098B (en) | 2021-04-20 |
Family
ID=69270988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911012584.3A Active CN110739098B (en) | 2019-10-23 | 2019-10-23 | Miniature easily-branched rat-proof photoelectric composite cable for wireless small base station and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110739098B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899944B (en) * | 2020-07-14 | 2022-03-04 | 杭州富通通信技术股份有限公司 | Rat-proof and termite-proof photoelectric composite cable |
| CN114942500B (en) * | 2022-07-25 | 2022-11-29 | 长飞光纤光缆股份有限公司 | Rat-proof belt for optical cable and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09102221A (en) * | 1995-10-06 | 1997-04-15 | Yazaki Corp | Rat-proof cable |
| JPH1139956A (en) * | 1997-07-23 | 1999-02-12 | Hitachi Cable Ltd | Mouse-proof cable having projected part |
| CN104834065A (en) * | 2015-04-21 | 2015-08-12 | 江苏亨通光电股份有限公司 | Light type anti-chewing and anti-thunder optical fiber and cable with easy stripping |
| CN204732223U (en) * | 2015-05-22 | 2015-10-28 | 成都亨通光通信有限公司 | A kind of central beam tube type optoelectronic composite cable of termite-resistant rodent-resistant |
| CN104849821A (en) * | 2015-06-02 | 2015-08-19 | 通鼎互联信息股份有限公司 | Novel longitudinally-wrapped non-metallic central tube type anti-bite optical cable |
| CN108845398A (en) * | 2018-08-31 | 2018-11-20 | 铜陵市铜都特种线缆有限公司 | A kind of single armored optical cable |
| CN109294119A (en) * | 2018-09-30 | 2019-02-01 | 康泰塑胶科技集团有限公司 | Anti- mouse and termite sting bad sheath tubing and preparation method thereof |
-
2019
- 2019-10-23 CN CN201911012584.3A patent/CN110739098B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110739098A (en) | 2020-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110739098B (en) | Miniature easily-branched rat-proof photoelectric composite cable for wireless small base station and preparation method thereof | |
| CN104078139B (en) | A kind of microflute cable | |
| CN203311048U (en) | Rat-proof optical fiber cable | |
| CN105467538B (en) | A kind of non-metallic optical fiber cables | |
| WO2022116840A1 (en) | 8-shaped optical cable resistant to bites of creatures | |
| CN102122052A (en) | Indoor or outdoor self-supporting armored butterfly-shaped entrance cable | |
| CN202093884U (en) | Photoelectric hybrid cable of high water resistance | |
| CN104181656A (en) | Full-dry type full-medium optical fiber ribbon optical cable and manufacturing method thereof | |
| CN202771069U (en) | Frame drainage pipeline optical cable prevented being bitten by mice | |
| CN205140582U (en) | Optical fiber composite cable | |
| CN102915807A (en) | Optical fiber composite aerial insulated cable and production method thereof | |
| CN202940052U (en) | Optical fiber composite overhead insulation cable | |
| CN208818882U (en) | Cable rope sleeve and the cable for being easy to stripping | |
| CN103792633A (en) | Method for manufacturing armored optical cables | |
| CN207397740U (en) | A kind of layer-twisted type microbeam pipe photoelectric mixed cable | |
| CN210348009U (en) | Rat-proof optical cable with novel structure | |
| CN109448905B (en) | Bending-resistant flexible cable | |
| CN209624848U (en) | A kind of rat-and-ant proof type all-dielectric self-supporting optical cable | |
| CN107731383B (en) | A kind of reinforced Wear-resistant, high-temperature resistant tension reel flat cable of aramid fiber yarn braiding | |
| CN201661780U (en) | Flexible liquid delivery pipe | |
| CN201449805U (en) | Overhead outdoor stretch-proofing 8-shaped data super 5-type cable | |
| CN201188140Y (en) | Optical cable protective sleeve | |
| CN210984345U (en) | Tensile cable | |
| CN201859242U (en) | Central tube type outdoor optical cable for communication | |
| CN202256805U (en) | Large-number-of-core optical fiber ribbon butterfly lead-in optical cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |