CN113270228A - Anti-cracking photoelectric composite cable - Google Patents
Anti-cracking photoelectric composite cable Download PDFInfo
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- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
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- G02B6/4429—Means specially adapted for strengthening or protecting the cables
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Abstract
The invention belongs to the technical field of photoelectric composite cables, and particularly relates to an anti-cracking photoelectric composite cable. The anti-cracking photoelectric composite cable comprises an outer sheath, a tensile layer, an armor layer, a first shielding layer, an insulating layer and a cable core from outside to inside in sequence, wherein the cable core comprises a reinforcing core, three electric units, an optical fiber unit and a filling rope, the three electric units, the optical fiber unit and the filling rope are arranged on the periphery of the reinforcing core, the reinforcing core is of a four-arc structure, the four arc surfaces are respectively abutted to the three electric units and the optical fiber unit, the filling rope is respectively abutted to the electric units, the optical fiber unit and the insulating layer, and glass fibers are filled between the reinforcing core, the electric units, the optical fiber unit, the filling rope and the insulating layer. The photoelectric composite cable is high in strength, not easy to bend and damage, stable in structure and excellent in cracking resistance, and normal transmission of optical fiber transmission signals is guaranteed.
Description
Technical Field
The invention belongs to the technical field of photoelectric composite cables, and particularly relates to an anti-cracking photoelectric composite cable.
Background
The photoelectric composite cable is suitable for being used as a transmission line in a broadband access network system, is a novel access mode, integrates optical fibers and transmission copper wires, and can solve the problems of broadband access, equipment power consumption and signal transmission. In the use process of the existing photoelectric composite cable, electromagnetic waves generated by current transmitted in the cable easily interfere with transmission signals in the optical fiber cable, and the existing photoelectric composite cable has poor compression strength and tensile strength and is easily damaged in the construction process.
Chinese patent No. CN213123934U discloses a high temperature resistant and corrosion resistant composite cable, which comprises a metal reinforcement, a heat insulation unit and an anticorrosive layer; a metal reinforcement: its side is circular to be equipped with wire and optic fibre, wire and optic fibre spiral winding are at the surface of metal reinforcement, accompany the packing rope between wire and the optic fibre, wire, optic fibre and the outside parcel of packing rope have the first shielding layer of one deck, the lateral surface cover of first shielding layer has the plastic steel layer of one deck: a heat insulation unit: the outer side surface of the plastic steel layer is sleeved with a layer of heat insulation unit, and the anticorrosive layer comprises: the outer side surface of the heat insulation unit is sleeved with the anticorrosion layer, and the high-temperature-resistant anticorrosion composite cable has high-temperature resistance, can be used in high-temperature environments, is high in corrosion resistance, can effectively protect the inside, and prolongs the service life. However, the composite cable disclosed by the patent has general pressure resistance and wear resistance, and is easily damaged in the using process.
Chinese patent with publication No. CN213070657U discloses a composite high flame-retardant rubber jacketed flexible cable of metal shielding optical fiber for coal mining machine, which comprises a power wire core conductor layer, a conductor shielding layer, an insulating shielding layer, a metal shielding layer, a flame-retardant filler, an optical unit, a control wire core, a ground wire core, a fiber braided reinforcing layer and a high flame-retardant outer jacket layer, the center of the cable is provided with a ground wire core, the outer circumference of the ground wire core is provided with three power wire core conductor layers, the power wire core conductor layers are adjacently arranged along the circumference of the ground wire core, the optical unit is arranged between the adjacent power wire core conductor layers, the control wire core is arranged in a symmetrical pore between the power wire core conductor layer and the fiber weaving reinforcing layer, the power wire core conductor layer is internally and externally wrapped with a conductor shielding layer, an insulating shielding layer and a metal shielding layer in sequence. However, the optical fiber composite high flame retardant rubber jacketed flexible cable of the patent is not provided with a reinforced core, and the overall strength is poor.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide the anti-cracking photoelectric composite cable which is stable in structure, high in mechanical strength and excellent in anti-cracking performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an anti-cracking photoelectric composite cable, includes oversheath, tensile layer, armor, first shielding layer, insulating layer and cable core from the extroversion in proper order, the cable core is including strengthening the core and setting up at three electric unit, an optical fiber unit, the packing rope of strengthening the core outlying, strengthens the core and is four arc structures, four cambered surfaces respectively with three electric unit, an optical fiber unit butt, the packing rope respectively with electric unit, optical fiber unit and insulating layer butt, it fills glass fiber to strengthen between core, electric unit, optical fiber unit, packing rope and the insulating layer.
Preferably, the reinforcing core is prepared from the following raw materials in parts by weight: 30-40 parts of nitrile rubber, 15-25 parts of PBT (polybutylene terephthalate), 10-20 parts of ethylene-chlorotrifluoroethylene copolymer, 10-15 parts of trioctyl trimellitate, 5-10 parts of carbon black N550, 33-6 parts of white carbon black VN-6 parts, 0.5-2 parts of dicumyl peroxide and 1-3 parts of N, N' -m-phenylene bismaleimide.
Preferably, the outer sheath is made of a polyurethane material.
Preferably, the tensile layer is formed by winding aramid fibers on the outer wall of the armor layer.
Preferably, the first shielding layer is a graphite fiber layer.
Preferably, the insulating layer is a medium density polyethylene film.
Preferably, the optical fiber unit includes an optical fiber, a protective tube disposed outside the optical fiber, and a second shielding layer disposed on an outer wall of the protective tube, and an optical fiber ointment is filled between the optical fiber and the protective tube.
Preferably, the protection tube is a stainless steel tube.
Preferably, the second shielding layer is a tinned copper wire mesh grid, the weaving density is more than or equal to 85%, aluminum foil mylar is wrapped outside, and the wrapping and covering rate is 40-50%.
Preferably, non-woven fabrics are further pasted outside the shielding layer.
The invention has the following positive beneficial effects:
1. the cable core comprises a reinforced core, three electric units, an optical fiber unit and a filling rope, wherein the three electric units, the optical fiber unit and the filling rope are arranged on the periphery of the reinforced core, the reinforced core is of a four-arc structure, the four arc surfaces are respectively abutted against the three electric units and the optical fiber unit, and the filling rope is respectively abutted against the electric units, the optical fiber unit and the insulating layer. The photoelectric composite cable is high in strength, not easy to bend and damage, stable in structure and excellent in cracking resistance, and normal transmission of optical fiber transmission signals is guaranteed.
2. The outer sheath improves the cracking resistance of the photoelectric composite cable, so that the photoelectric composite cable is resistant to compression and abrasion in the use process; the tensile layer has high strength, is wear-resistant and tear-resistant, and improves the tensile property of the composite cable; the deformation and abrasion of the photoelectric composite cable are reduced in the dragging process of the armor layer of the photoelectric composite cable; the first shielding layer plays a role in shielding external electromagnetic wave interference signals; the insulating layer improves the insulating property of the photoelectric composite cable; the photoelectric composite cable has the advantages that all the layers are combined for use, the obtained photoelectric composite cable is high in overall strength, excellent in cracking resistance and not prone to deformation, and normal transmission of optical fiber transmission signals is guaranteed.
3. The optical fiber unit comprises an optical fiber, a protection pipe arranged outside the optical fiber and a second shielding layer arranged on the outer wall of the protection pipe, wherein optical fiber ointment is filled between the optical fiber and the protection pipe, and non-woven fabrics are pasted outside the second shielding layer.
4. According to the invention, the reinforced core nitrile rubber, PBT, the ethylene-chlorotrifluoroethylene copolymer, trioctyl trimellitate, carbon black N550 and white carbon black VN-3 act together, the Shore hardness of the obtained reinforced core is more than or equal to 76, the tensile strength is more than or equal to 32.1MPa, the hardness is high, the tensile strength is high, the good bending resistance of the reinforced core is ensured, the internal structure of the photoelectric composite cable is maintained, and the service life of the photoelectric composite cable is prolonged.
Drawings
Fig. 1 is a schematic structural view of a photoelectric composite cable according to the present invention;
FIG. 2 is a schematic view of the structure of an optical fiber unit according to the present invention;
in the figure: 1-outer sheath, 2-tensile layer, 3-armor layer, 4-first shielding layer, 5-insulating layer, 6-glass fiber, 7-electric unit, 8-filling rope, 9-optical fiber unit, 91-optical fiber, 92-protection tube, 93-second shielding layer, 94-non-woven fabric, 95-optical fiber ointment and 10-reinforced core.
Detailed Description
The invention will be further illustrated with reference to some specific examples.
Example 1
Referring to fig. 1, the anti-cracking photoelectric composite cable sequentially comprises an outer sheath 1, a tensile layer 2, an armor layer 3, a first shielding layer 4, an insulating layer 5 and a cable core from outside to inside, wherein the outer sheath 1 is made of a polyurethane material, the tensile layer 2 is formed by winding aramid fibers on the outer wall of the armor layer 3, and the first shielding layer 4 is a graphite fiber layer and is good in shielding external electromagnetic wave interference signals; the insulating layer 5 is a medium density polyethylene film which has not only good insulating property but also excellent waterproof property.
The cable core is including strengthening core 10 and setting at strengthening core 10 outlying three electric unit 7, an optical fiber unit 9, the filling rope 8, it is rhombus structure to strengthen core 10, four faces are the arc, four cambered surfaces respectively with three electric unit 7, an optical fiber unit 9 butt, the filling rope 8 sets up at electric unit, optical fiber unit is peripheral, and with electric unit 7, optical fiber unit 9 and insulating layer 5 butt, strengthen core 10, electric unit 7, optical fiber unit 9, fill glass fiber 6 between filling rope 8 and the insulating layer 5.
The reinforced core is prepared from the following raw materials in parts by weight: 30 parts of nitrile rubber, 15 parts of PBT (polybutylene terephthalate), 20 parts of ethylene-chlorotrifluoroethylene copolymer, 12 parts of trioctyl trimellitate, N5505 parts of carbon black, VN-33 parts of white carbon black, 0.5 part of dicumyl peroxide and 1 part of N, N' -m-phenylene bismaleimide, and the obtained reinforced core has Shore hardness of 78 and tensile strength of 33.5 MPa.
Referring to fig. 2, the optical fiber unit includes an optical fiber 91, a protection tube 92 disposed outside the optical fiber 91, and a second shielding layer 93 disposed on an outer wall of the protection tube 92, an optical fiber ointment 95 is filled between the optical fiber 91 and the protection tube 92, the optical fiber is a multimode optical fiber with a specification of G50 μm/125 μm, the protection tube is a stainless steel tube, the second shielding layer is a tinned copper wire mesh grid, the optical fiber is woven by a 16-spindle weaving machine, the weaving density is 85%, the outside is wrapped with an aluminum foil mylar, the wrapping coverage is 40%, and a non-woven fabric 94 is further adhered to the outside of the shielding layer.
Example 2
Referring to fig. 1, the anti-cracking photoelectric composite cable sequentially comprises an outer sheath 1, a tensile layer 2, an armor layer 3, a first shielding layer 4, an insulating layer 5 and a cable core from outside to inside, wherein the outer sheath 1 is made of a polyurethane material, the tensile layer 2 is formed by winding aramid fibers on the outer wall of the armor layer 3, and the first shielding layer 4 is a graphite fiber layer and is good in shielding external electromagnetic wave interference signals; the insulating layer 5 is a medium density polyethylene film which has not only good insulating property but also excellent waterproof property.
The cable core is including strengthening core 10 and setting at strengthening core 10 outlying three electric unit 7, an optical fiber unit 9, the filling rope 8, it is rhombus structure to strengthen core 10, four faces are the arc, four cambered surfaces respectively with three electric unit 7, an optical fiber unit 9 butt, the filling rope 8 sets up at electric unit, optical fiber unit is peripheral, and with electric unit 7, optical fiber unit 9 and insulating layer 5 butt, strengthen core 10, electric unit 7, optical fiber unit 9, fill glass fiber 6 between filling rope 8 and the insulating layer 5.
The reinforced core is prepared from the following raw materials in parts by weight: 33 parts of nitrile rubber, 17 parts of PBT (polybutylene terephthalate), 10 parts of ethylene-chlorotrifluoroethylene copolymer, 14 parts of trioctyl trimellitate, N5506 parts of carbon black, VN-34 parts of white carbon black, 1.0 part of dicumyl peroxide and 1.2 parts of N, N' -m-phenylene bismaleimide, and the obtained reinforced core has Shore hardness of 80 and tensile strength of 32.1 MPa.
Referring to fig. 2, the optical fiber unit includes an optical fiber 91, a protection tube 92 disposed outside the optical fiber 91, and a second shielding layer 93 disposed on an outer wall of the protection tube 92, an optical fiber ointment 95 is filled between the optical fiber 91 and the protection tube 92, the optical fiber is a multimode optical fiber with a specification of G50 μm/125 μm, the protection tube is a stainless steel tube, the second shielding layer is a tinned copper wire mesh grid, the optical fiber is woven by a 16-spindle weaving machine, the weaving density is 90%, the outside is wrapped with an aluminum foil mylar, the wrapping coverage is 40%, and a non-woven fabric 94 is further adhered to the outside of the shielding layer 93.
Example 3
Referring to fig. 1, the anti-cracking photoelectric composite cable sequentially comprises an outer sheath 1, a tensile layer 2, an armor layer 3, a first shielding layer 4, an insulating layer 5 and a cable core from outside to inside, wherein the outer sheath 1 is made of a polyurethane material, the tensile layer 2 is formed by winding aramid fibers on the outer wall of the armor layer 3, and the first shielding layer 4 is a graphite fiber layer and is good in shielding external electromagnetic wave interference signals; the insulating layer 5 is a medium density polyethylene film which has not only good insulating property but also excellent waterproof property.
The cable core is including strengthening core 10 and setting at strengthening core 10 outlying three electric unit 7, an optical fiber unit 9, the filling rope 8, it is rhombus structure to strengthen core 10, four faces are the arc, four cambered surfaces respectively with three electric unit 7, an optical fiber unit 9 butt, the filling rope 8 sets up at electric unit, optical fiber unit is peripheral, and with electric unit 7, optical fiber unit 9 and insulating layer 5 butt, strengthen core 10, electric unit 7, optical fiber unit 9, fill glass fiber 6 between filling rope 8 and the insulating layer 5.
The reinforced core is prepared from the following raw materials in parts by weight: 36 parts of nitrile rubber, 20 parts of PBT (polybutylene terephthalate), 15 parts of ethylene-chlorotrifluoroethylene copolymer, 13 parts of trioctyl trimellitate, N5507 parts of carbon black, VN-33 parts of white carbon black, 1.0 part of dicumyl peroxide and 1.5 parts of N, N' -m-phenylene bismaleimide, and the obtained reinforced core has Shore hardness of 80 and tensile strength of 34.9 MPa.
Referring to fig. 2, the optical fiber unit includes an optical fiber 91, a protection tube 92 disposed outside the optical fiber 91, and a second shielding layer 93 disposed on an outer wall of the protection tube 92, an optical fiber ointment 95 is filled between the optical fiber 91 and the protection tube 92, the optical fiber is a multimode optical fiber with a specification of G50 μm/125 μm, the protection tube is a stainless steel tube, the second shielding layer is a tinned copper wire mesh grid, the optical fiber is woven by a 16-spindle weaving machine, the weaving density is 90%, the outside is wrapped with an aluminum foil mylar, the wrapping coverage is 50%, and a non-woven fabric 94 is further adhered to the outside of the shielding layer 93.
Example 4
Referring to fig. 1, the anti-cracking photoelectric composite cable sequentially comprises an outer sheath 1, a tensile layer 2, an armor layer 3, a first shielding layer 4, an insulating layer 5 and a cable core from outside to inside, wherein the outer sheath 1 is made of a polyurethane material, the tensile layer 2 is formed by winding aramid fibers on the outer wall of the armor layer 3, and the first shielding layer 4 is a graphite fiber layer and is good in shielding external electromagnetic wave interference signals; the insulating layer 5 is a medium density polyethylene film which has not only good insulating property but also excellent waterproof property.
The cable core is including strengthening core 10 and setting at strengthening core 10 outlying three electric unit 7, an optical fiber unit 9, the filling rope 8, it is rhombus structure to strengthen core 10, four faces are the arc, four cambered surfaces respectively with three electric unit 7, an optical fiber unit 9 butt, the filling rope 8 sets up at electric unit, optical fiber unit is peripheral, and with electric unit 7, optical fiber unit 9 and insulating layer 5 butt, strengthen core 10, electric unit 7, optical fiber unit 9, fill glass fiber 6 between filling rope 8 and the insulating layer 5.
The reinforced core is prepared from the following raw materials in parts by weight: 38 parts of nitrile rubber, 22 parts of PBT (polybutylene terephthalate), 12 parts of ethylene-chlorotrifluoroethylene copolymer, 13 parts of trioctyl trimellitate, N5508 parts of carbon black, VN-35 parts of white carbon black, 1.5 parts of dicumyl peroxide and 2 parts of N, N' -m-phenylene bismaleimide, and the obtained reinforced core has the Shore hardness of 76 and the tensile strength of 33 MPa.
Referring to fig. 2, the optical fiber unit includes an optical fiber 91, a protection tube 92 disposed outside the optical fiber 91, and a second shielding layer 93 disposed on an outer wall of the protection tube 92, an optical fiber ointment 95 is filled between the optical fiber 91 and the protection tube 92, the optical fiber is a multimode optical fiber with a specification of G50 μm/125 μm, the protection tube is a stainless steel tube, the second shielding layer is a tinned copper wire mesh grid, the optical fiber is woven by a 16-spindle weaving machine, the weaving density is 85%, the outside is wrapped with an aluminum foil mylar, the wrapping coverage is 50%, and a non-woven fabric 94 is further adhered to the outside of the shielding layer 93.
Example 5
Referring to fig. 1, the anti-cracking photoelectric composite cable sequentially comprises an outer sheath 1, a tensile layer 2, an armor layer 3, a first shielding layer 4, an insulating layer 5 and a cable core from outside to inside, wherein the outer sheath 1 is made of a polyurethane material, the tensile layer 2 is formed by winding aramid fibers on the outer wall of the armor layer 3, and the first shielding layer 4 is a graphite fiber layer and is good in shielding external electromagnetic wave interference signals; the insulating layer 5 is a medium density polyethylene film which has not only good insulating property but also excellent waterproof property.
The cable core is including strengthening core 10 and setting at strengthening core 10 outlying three electric unit 7, an optical fiber unit 9, the filling rope 8, it is rhombus structure to strengthen core 10, four faces are the arc, four cambered surfaces respectively with three electric unit 7, an optical fiber unit 9 butt, the filling rope 8 sets up at electric unit, optical fiber unit is peripheral, and with electric unit 7, optical fiber unit 9 and insulating layer 5 butt, strengthen core 10, electric unit 7, optical fiber unit 9, fill glass fiber 6 between filling rope 8 and the insulating layer 5.
The reinforced core is prepared from the following raw materials in parts by weight: 39 parts of nitrile rubber, 24 parts of PBT (polybutylene terephthalate), 17 parts of ethylene-chlorotrifluoroethylene copolymer, 10 parts of trioctyl trimellitate, N5509 parts of carbon black, VN-36 parts of white carbon black, 1.0 part of dicumyl peroxide and 2.5 parts of N, N' -m-phenylene bismaleimide, and the obtained reinforced core has Shore hardness of 78 and tensile strength of 32.7 MPa.
Referring to fig. 2, the optical fiber unit includes an optical fiber 91, a protection tube 92 disposed outside the optical fiber 91, and a second shielding layer 93 disposed on an outer wall of the protection tube 92, an optical fiber ointment 95 is filled between the optical fiber 91 and the protection tube 92, the optical fiber is a multimode optical fiber with a specification of G50 μm/125 μm, the protection tube is a stainless steel tube, the second shielding layer is a tinned copper wire mesh grid, the optical fiber is woven by a 16-spindle weaving machine, the weaving density is 85%, the outside is wrapped with an aluminum foil mylar, the wrapping coverage is 40%, and a non-woven fabric 94 is further adhered to the outside of the shielding layer.
Example 6
Referring to fig. 1, the anti-cracking photoelectric composite cable sequentially comprises an outer sheath 1, a tensile layer 2, an armor layer 3, a first shielding layer 4, an insulating layer 5 and a cable core from outside to inside, wherein the outer sheath 1 is made of a polyurethane material, the tensile layer 2 is formed by winding aramid fibers on the outer wall of the armor layer 3, and the first shielding layer 4 is a graphite fiber layer and is good in shielding external electromagnetic wave interference signals; the insulating layer 5 is a medium density polyethylene film which has not only good insulating property but also excellent waterproof property.
The cable core is including strengthening core 10 and setting at strengthening core 10 outlying three electric unit 7, an optical fiber unit 9, the filling rope 8, it is rhombus structure to strengthen core 10, four faces are the arc, four cambered surfaces respectively with three electric unit 7, an optical fiber unit 9 butt, the filling rope 8 sets up at electric unit, optical fiber unit is peripheral, and with electric unit 7, optical fiber unit 9 and insulating layer 5 butt, strengthen core 10, electric unit 7, optical fiber unit 9, fill glass fiber 6 between filling rope 8 and the insulating layer 5.
The reinforced core is prepared from the following raw materials in parts by weight: 40 parts of nitrile rubber, 25 parts of PBT (polybutylene terephthalate), 20 parts of ethylene-chlorotrifluoroethylene copolymer, 15 parts of trioctyl trimellitate, 10 parts of carbon black N55010 parts, 35 parts of white carbon black VN-35 parts, 2 parts of dicumyl peroxide and 3 parts of N, N' -m-phenylene bismaleimide, and the obtained reinforced core has Shore hardness of 79 and tensile strength of 34.2 MPa.
Referring to fig. 2, the optical fiber unit includes an optical fiber 91, a protection tube 92 disposed outside the optical fiber 91, and a second shielding layer 93 disposed on an outer wall of the protection tube 92, an optical fiber ointment 95 is filled between the optical fiber 91 and the protection tube 92, the optical fiber is a multimode optical fiber with a specification of G50 μm/125 μm, the protection tube is a stainless steel tube, the second shielding layer is a tinned copper wire mesh grid, the optical fiber is woven by a 16-spindle weaving machine, the weaving density is 90%, the outside is wrapped with an aluminum foil mylar, the wrapping coverage is 40%, and a non-woven fabric 94 is further adhered to the outside of the shielding layer 93.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides an anti-cracking photoelectric composite cable, its characterized in that includes oversheath, tensile layer, armor, first shielding layer, insulating layer and cable core from the extroversion in proper order, the cable core includes the enhancement core and sets up at three electric unit, an optical fiber unit, the packing rope of enhancement core outlying, and the enhancement core is four arc structures, and four cambered surfaces respectively with three electric unit, an optical fiber unit butt, the packing rope respectively with electric unit, optical fiber unit and insulating layer butt, fill glass fiber between enhancement core, electric unit, optical fiber unit, packing rope and the insulating layer.
2. The anti-cracking photoelectric composite cable according to claim 1, wherein the reinforcing core is made of the following raw materials in parts by weight: 30-40 parts of nitrile rubber, 15-25 parts of PBT (polybutylene terephthalate), 10-20 parts of ethylene-chlorotrifluoroethylene copolymer, 10-15 parts of trioctyl trimellitate, 5-10 parts of carbon black N550, 33-6 parts of white carbon black VN-6 parts, 0.5-2 parts of dicumyl peroxide and 1-3 parts of N, N' -m-phenylene bismaleimide.
3. The crack-resistant optical-electrical composite cable of claim 1, wherein the outer jacket is made of a polyurethane material.
4. The crack-resistant optical-electrical composite cable of claim 1, wherein the tensile layer is formed by wrapping aramid fibers around the outer wall of the armor layer.
5. The crack-resistant optical-electrical composite cable of claim 1, wherein the first shielding layer is a graphite fiber layer.
6. The crack-resistant composite optical cable of claim 1, wherein the insulating layer is a medium density polyethylene film.
7. The crack-resistant optical-electrical composite cable of claim 1, wherein the optical fiber unit comprises an optical fiber, a protective tube disposed outside the optical fiber, and a second shielding layer disposed on an outer wall of the protective tube, and an optical fiber ointment is filled between the optical fiber and the protective tube.
8. The crack resistant optical-electrical composite cable of claim 7, wherein the protective tube is a stainless steel tube.
9. The anti-cracking photoelectric composite cable according to claim 7, wherein the second shielding layer is a tinned copper wire mesh with a weaving density of not less than 85%, and the outer portion is wrapped with aluminum foil mylar with a wrapping cover ratio of 40-50%.
10. The anti-cracking composite optical cable as claimed in claim 7, wherein a non-woven fabric is further adhered to the outside of the second shielding layer.
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| CN202110573532.4A CN113270228A (en) | 2021-05-25 | 2021-05-25 | Anti-cracking photoelectric composite cable |
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| CN202110573532.4A CN113270228A (en) | 2021-05-25 | 2021-05-25 | Anti-cracking photoelectric composite cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167564A (en) * | 2021-12-31 | 2022-03-11 | 上海万普线缆有限公司 | Network cable with tear-resistant surface and preparation method thereof |
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Application publication date: 20210817 |