CN104570250A - Marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable and manufacturing method thereof - Google Patents
Marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable and manufacturing method thereof Download PDFInfo
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- CN104570250A CN104570250A CN201510020176.8A CN201510020176A CN104570250A CN 104570250 A CN104570250 A CN 104570250A CN 201510020176 A CN201510020176 A CN 201510020176A CN 104570250 A CN104570250 A CN 104570250A
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- 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
- G02B6/4436—Heat resistant
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- 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
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- 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
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
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- 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
- G02B6/4479—Manufacturing methods of optical cables
Abstract
The invention relates to a marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable and a manufacturing method thereof, and belongs to the technical field of optical communication special optical cable manufacturing. The marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable is a special fire-resistant optical cable for data communication, and is composed of ultra-low-loss low-temperature-resistant tightly-sleeved optical fiber units, a high-modulus aramid fiber and waterproof aramid fiber mixed reinforcing piece, a halogen-free low-smoke flame-retardant polyolefin oxygen-isolation layer inner protective sleeve, a fire-resistant white mica tape wrapping layer, a stainless steel wire woven wire layer and a crosslinked polyolefin outer protective sleeve. The ultra-low-loss low-temperature-resistant tightly-sleeved optical fiber units are twisted, high-modulus aramid fiber and waterproof aramid fiber are adopted for making the high-modulus aramid fiber and waterproof aramid fiber mixed reinforcing piece, the oxygen-isolation layer inner protective sleeve wraps the reinforcing piece in an extruded mode, the fire-resistant white mica tape wrapping layer wraps the oxygen-isolation layer inner protective sleeve, stainless steel wires are woven outside the fire-resistant white mica tape wrapping layer to form the stainless steel wire woven wire layer, and the crosslinked polyolefin outer protective sleeve wraps the fire-resistant white mica tape wrapping layer and the stainless steel wire woven wire layer in an extruded mode.
Description
Technical field
What the present invention relates to is a kind of vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable and preparation method thereof, belong to optical communication special optical cable manufacturing technology field, it is a kind of data communication special type fire optical cable, be applicable to the naval vessel internal wirings such as battleship, cruiser, destroyer, escort vessel, large-scale supply ship use, be also applicable to wiring in large-sized civil cargo ship; The type optical cable has that excellent mechanical transfer performance, bending radius are little, fire resistant flame retardant, low cigarette, Halogen low toxicity, block water, seawater corrosion resistance, resistance to wet goods feature.
Background technology
Along with the development of optical communication technique, each state all pays much attention to Fibre Optical Communication Technology application militarily, and army C3I(C3:Command is commanded, Control controls, Communication communication) fiberize of system regards " third time military revolution " after nuclear weapon, long-range missile as.Along with naval equipment is to modernization, development of maximizing, the electronic equipments such as the communication of naval vessels, radar, navigation, sensing system and Weapon Direction System, naval are reduce serious electromagnetic interference (EMI), get more and more to the demand of optical cable.
Through investigation, the optical cable that current domestic naval vessel uses, substantially still continues to use and incorporates national standard and the optical cable general specification national military standard of land communication cable, do not have the special standard of Optical Cables for Shipboard.And the optical cable on current naval vessel is not all through the qualification of naval, selected Optical Cables for Shipboard has paid close attention to its transport property, part has taken into account the fire resistance of optical cable, and the overall characteristic of optical cable is equal to common land fire-retardant cable, not can be used for the product of the specific environment for use in naval vessel.
Optical Cables for Shipboard must be lightweight, to reduce the weight center of gravity on naval vessel, cable size is little, flexible, is particularly suitable for laying installation in naval vessel narrow space, existing Optical Cables for Shipboard adopts ordinary optic fibre, and transmission attenuation is comparatively large, and when cable bend radii is less than 10D (10 times of cable outer diameters), optical cable transmission decay super large, has had a strong impact on Optical Fiber Transmission performance, caused dropped calls, naval vessel at sea travels for a long time, and by the long-term etch of seawater, make the major cycle of the resistance to damage of optical cable protective layer, optical cable Long Service Life significantly declines, when optical cable chaps by sheath under the long-term tractive of external pressure, departs from and even break, one when naval vessel catches a packet in war, serious fire may be produced, at this moment ordinary optical cable is improper self can be lighted, also can prolong combustion to optical cable each position of process, this optical cable can discharge a large amount of toxic and harmfuls in combustion, warship ship's staff second hurt evil and death by suffocation and instrument and meter on naval vessel can be made to cause the heavy corrosion of this harmful gas can be caused, even if adopt existing common fire-retardant cable, although can harmful gas be reduced, but can fibercuts be caused in burning, cause communication disruption, cause serious consequence, even incur loss through delay opportunity of combat.
Therefore, in the modernization of naval equipment, the properties promoting the informatization and network on naval vessel stands in the breach.A kind of fire-resistant flexible optical cable that can meet long-term safe and reliable use in naval vessel rugged surroundings of present urgent need, thus increase substantially the integrated invulnerability energy of informatization and network, protect personal security on naval vessel and warship, improve naval vessel fight vitality.
Summary of the invention
It is poor to the present invention seeks to for Optical Cables for Shipboard bending property in above-mentioned background technology, signal transmission ability is weak, sea water resistance and fuel oil do not soak puckery, do not possess the performance weak points such as fire resistant flame retardant low toxicity, a kind of vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable provided and preparation method thereof, by selecting the outer low temperature resistant tight cover material of extrusion molding of low loss fiber as basic hard-pressed bale unit, then by many, tightly cover unit is stranded, tight cover unit adopts high-modulus aramid fiber to strengthen with water resistance aramid fiber mixing outward, adopt halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer protective cover material extrusion molding one deck inner sheath of oxygen index 45, sheath external application fire resistant flame retardant white mica band carries out wrapped, band outer more in addition 0.07mm stainless steel wire weave, oversheath adopts cross-linked polyolefin sheath material to solve the problem completely, the present invention is widely used in all types of naval vessel, and connect up in some ships for civil use.
Vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable of the present invention and preparation method thereof takes following technical scheme to realize:
Vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable is made up of ultra-low loss low temperature resistant tight tube fiber unit, high-modulus aramid fiber water resistance aramid fiber mixing reinforcement, halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath, fire-resistant white clouds master tape lapping layer, stainless steel wire braided wires layer, cross-linked polyolefin oversheath.
The counter-bending tight tube fiber unit of ultra-low loss adopts low temperature resistant flame retardant polyolefin jacket material to carry out extrusion molding sheath outward in ultra-low loss bend insensitive fiber to make, as basic light unit.
Stranded by many ultra-low loss counter-bending tight tube fiber unit, ultra-low loss counter-bending tight tube fiber unit stranded layer adopts high-modulus aramid fiber and water resistance aramid fiber to make high-modulus aramid fiber water resistance aramid fiber mixing reinforcement outward, at high-modulus aramid fiber water resistance aramid fiber mixing reinforcement outer extrusion molding encapsulating oxygen barrier layer inner sheath, oxygen barrier layer inner sheath carries out wrapped formation fire-resistant white clouds master tape lapping layer with fire-resistant white mica band outward again, fire-resistant white clouds master tape lapping layer is outer forms stainless steel wire braided wires layer in order to stainless steel wire braiding again, at fire-resistant white clouds master tape lapping layer, stainless steel wire braid outer extrusion molding encapsulating cross-linked polyolefin oversheath.
The counter-bending tight tube fiber unit of ultra-low loss can adopt 1 ~ 12, the counter-bending tight tube fiber unit of every root 1 core ultra-low loss.
Ultra-low loss tight tube fiber unit is adopt low temperature resistant flame retardant polyolefin jacket material to carry out extrusion molding sheath outside ultra-low loss bend insensitive fiber to form.The low temperature resistant tight tube fiber unit of the following ultra-low loss of concrete structure technical parameter makes.
By stranded for many ultra-low loss tight tube fiber unit, tight tube fiber stranded layer adopts high-modulus aramid fiber and water resistance aramid fiber to strengthen making reinforcement outward, reinforcement outer extrusion molding encapsulating oxygen barrier layer inner sheath, inner sheath carries out wrapped with fire-resistant white mica band outward again, lapping layer weaves in order to stainless steel wire outward again, form stainless steel wire braided wires layer, at fire-resistant white clouds master tape, stainless steel wire braid outer extrusion molding encapsulating cross-linked polyolefin oversheath.
Optical Cables for Shipboard is guarantee stablizing of optical signal transmission, and without interruption, therefore fibre loss must be the smaller the better in long range propagation process for optical fiber, to ensure that call is clear, graphic image is clear, noiseless; What the present invention selected is the counter-bending insensitive optical fiber of a ultra-low loss, compares this optical fiber every kilometer loss of ordinary optic fibre extremely low.Adopt this optical fiber can meet the requirement of Optical Cables for Shipboard transmission performance completely.
Vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable method for making is as follows:
1, the low temperature resistant tight tube fiber unit of ultra-low loss makes
Get out optical fiber pay-off rack, adjustment test is carried out to optical fiber pay-off rack laying tension, tight tube fiber laying tension is adjusted to 0.5N-0.7N, guarantees that tight tube fiber laying tension need be guaranteed unanimously;
Choose extruded mould and carry out extrusion molding outside tight tube fiber, tight tube fiber protective cover material adopts low temperature resistant flame retardant polyolefin jacket material, regulate outer diameter sheath and wall thickness, low temperature resistant tight tube fiber external diameter is adjusted to 0.85 ± 0.05mm, wall thickness 0.25mm ~ 0.3mm, extrusion temperature controls at 135 ~ 160 DEG C, makes low temperature resistant tight tube fiber unit.
2, halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath cellular manufacture
Testing each cage pay off rack laying tension, is 1.0N-1.5N by cage pay off rack tension adjustment, often will coil low temperature resistant tight tube fiber unit according to color sequences, and load onto cage pay off rack, from tracked by guide wheel to head;
Install high-modulus aramid fiber and water resistance aramid fiber reinforcement, high-modulus aramid fiber laying tension is adjusted to 1.0N-1.5N twisting pitch and is modulated to 350-450mm; Water resistance aramid fiber laying tension is adjusted to 1.5N-2N twisting pitch and is modulated to 350-450mm;
The good extruded mould of device, this structure optical cable adopts tubular molding tool, and the stranded rear external diameter of low temperature resistant tight tube fiber unit is 2.1 ~ 3.6mm, and adding the stranded rear external diameter of aramid fiber is 3.4 ~ 4.2mm, and oxygen barrier layer inner sheath external diameter is designed to 5.8 ~ 6.2mm, wall thickness 0.9 ~ 1.0mm; According to stranded external diameter, outer diameter sheath wall thickness calculate core rod external diameter adopts 4.5 ~ 5.2mm, and die sleeve internal diameter adopts 8.5 ~ 9.0mm;
Regulate oxygen barrier layer inner sheath extrusion temperature: oxygen barrier layer inner sheath adopts the halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer protective cover material of oxygen index 45, it is 130 ~ 170 DEG C by Extruder temperature scope control, regulate extrusion molding speed, extrusion molding speed is 30 ~ 35m/min, by extruded mould at tight tube fiber unit and the circular inner sheath of aramid fiber reinforcement outer cladding last layer, oxygen barrier layer inner sheath external diameter is controlled at 5.8 ~ 6.2mm, wall thickness 0.9 ~ 1.0mm, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 30 ~ 40 DEG C, and cold rinse bank temperature controls at 19 ~ 25 DEG C.
Fire-resistant white clouds master tape is wrapped, stainless steel wire weaves: according to oxygen barrier layer inner sheath external diameter, wrapped overlap joint controls for twining package tape width 10 ~ 15%, calculate that to adopt specification to be that 13-16mm mica tape carries out wrapped the most suitable, when carrying out wrapped, control wrapped tension force well, wrapped Tension design is 4-7N; Mica tape layer adopts diameter 0.07mm stainless steel wire to weave outward, forms stainless steel wire braid.
3, cross-linked polyolefin oversheath is produced
Cross-linked polyolefin oversheath adopts cross-linked polyolefin sheath material, has low smoke and zero halogen, low toxicity, the fire-retardant excellent properties such as corrosion-resistant,
Halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath is through Mica tape, after stainless steel wire braiding, external diameter is 6.6mm ~ 7.0mm, cross-linked polyolefin oversheath external diameter is designed to 9.0mm ~ 10.0mm, wall thickness 1.0mm ~ 1.3mm is according to wrapped external diameter, cross-linked polyolefin oversheath external diameter chooses mould, tubular molding tool selected by mould, core rod external diameter 8.0mm ~ 8.3mm, die sleeve internal diameter 11.3mm ~ 12.1mm;
Install mould, cross-linked polyolefin extrusion temperature controlled at 145 ~ 170 DEG C, regulate mould and extrusion molding speed, extrusion molding speed is 20 ~ 25m/min, external diameter is regulated, outside mica tape, stainless steel wire braid, extrude cross-linked polyolefin sheath material, form cross-linked polyolefin oversheath, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 35 ~ 45 DEG C, cold rinse bank temperature controls at 19 ~ 25 DEG C, through drawing upper dish, makes vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable.
Vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable of the present invention and preparation method thereof beneficial effect:
A () vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable transmission performance is stablized
Optical Cables for Shipboard is guarantee stablizing of optical signal transmission, and without interruption, therefore fibre loss must be the smaller the better in long range propagation process for optical fiber, to ensure that call is clear, graphic image is clear, noiseless; What our research and development were specifically selected is the counter-bending insensitive optical fiber of a ultra-low loss, compares this optical fiber every kilometer loss of ordinary optic fibre extremely low.Adopt this optical fiber can meet the requirement of Optical Cables for Shipboard transmission performance completely.
B () vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable compression and tensile strength is high
Optical Cables for Shipboard should possess certain tensile strength, object is the mechanicals efforts and environmental impact that guarantee optical cable can tolerate in installation process and length of life runs into, to ensure optical cable, under tension situation, signal still can normal transmission, we select high-modulus Kev to draw as reinforcement material for this reason, this made of soft, every Property comparison are stablized, compared with other common material, the force value of bearing is higher, and softness is more suitable for the reinforcement material as Optical Cables for Shipboard; We are designed to 2000N by this Optical Cables for Shipboard pulling force, and flat pressure is 2200N/10cm.
C () vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable soft pliable is bent
Optical Cables for Shipboard is by small space environmental restraint on naval vessel, and cable bend radii is accomplished the smaller the better, but also should ensure that optical cable transmission is without significant change at guarantee optical cable small-bend radius simultaneously; We design this Optical Cables for Shipboard optical fiber and adopt counter-bending insensitive optical fiber, with tight tube fiber as basic light unit, tight tube fiber size is little only has 0.9mm, made of soft, flexible, from internal element just ensure cable bend performance, our extrusion molding one deck flexible material sheath of outside, ensures the flexibility of optical cable; We are designed to 6D at this Optical Cables for Shipboard minimum bending radius, and when cable bend radii reaches 6D, optical fiber should produce without obvious additional attenuation, and to guarantee that optical cable uses on narrow naval vessel, optical fiber transmission signal is normal.
D the water-fast fire performance of () vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable is good
Naval vessel is when there being war, in case of naval vessel is on fire, for guaranteeing that communication is normal, in time instruction can be sent, naval vessel optical cable must have water-fast fire performance, structural design is at the outer high temperature resistant mica wrapping tape of wrapped one deck of flexible material sheath, mica wrapping tape weaves one deck braid with the tiny stainless steel wire of 0.07mm outward again, this braid plays decisive role in Optical Cables for Shipboard is by water-fast fire performance test, steel wire energy is high temperature resistant can not be brittle 750 DEG C time, during burning, flame directly contacts with steel wire braid, a buffer protection function is risen to the inside mica tape and sheath, simultaneously when cooling, steel wire braid also has insulation effect, avoiding the inside fiber optic temperature suddenly to reduce causes optical fiber to shrink fracture.Steel wire braid also has mouse bite preventing function in addition, optical cable can be avoided to be baited by mouse on naval vessel and cause fibercuts, affect the transmission of fiber-optic signal.We can meet the water-fast fiery spray test of Britain BS6387 by this vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable, also the requirement of GB/T19216.25-2003 testing standard can be met, burn 90min under the flame of 750 DEG C, and cooling 15min, optical fiber does not rupture.
E () vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable low-smoke zero-halogen low-toxicity is fire-retardant
Naval vessel catching fire, a large amount of smog toxic gases will be produced, fatal harm will be brought to crewman in naval vessel small space, this naval vessel fire-resistant flexible optical cable of low temperature Halogen low-poison and combustion-resisting adopts special cross-linked polyolefin as outer sheath material, this material low-smoke zero-halogen low-toxicity is fire-retardant, poison exponent is maximum is no more than 5, transmittance 70%, content of halogen maximum 0.2%.
F () vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable end face blocks water
Vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable is dry type structural oilless cream, more clean, the quick connection with connector of being more convenient for; For ensureing that optical cable end face blocks water, we to block water material by applying one deck on tight tube fiber, and tight tube fiber surrounding again helical coated one deck import Kev that blocks water is drawn, and can meet naval vessel optical cable section and block water.
Accompanying drawing explanation
Below with reference to accompanying drawing, the invention will be further described:
The counter-bending tight tube fiber cell schematics of ultra-low loss of Fig. 1 vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable.
Fig. 2 vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable structural representation.
Embodiment
With reference to accompanying drawing 1,2, vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable is made up of ultra-low loss low temperature resistant tight tube fiber unit, high-modulus aramid fiber water resistance aramid fiber mixing reinforcement 3, halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath 4, fire-resistant white clouds master tape lapping layer 5, stainless steel wire braided wires layer 6, cross-linked polyolefin oversheath 7.Stranded by many ultra-low loss counter-bending tight tube fiber unit, ultra-low loss counter-bending tight tube fiber unit stranded layer adopts high-modulus aramid fiber and water resistance aramid fiber to make high-modulus aramid fiber water resistance aramid fiber mixing reinforcement 3 outward, at high-modulus aramid fiber water resistance aramid fiber mixing reinforcement outer extrusion molding encapsulating halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath 4, halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath 4 is outer carries out wrapped formation fire-resistant white clouds master tape lapping layer 5 with fire-resistant white mica band again, fire-resistant white clouds master tape lapping layer 5 is outer forms stainless steel wire braided wires layer 6 in order to stainless steel wire braiding again, at fire-resistant white clouds master tape lapping layer 5, stainless steel wire braid 6 outer extrusion molding encapsulating cross-linked polyolefin oversheath 7.
The counter-bending tight tube fiber unit of ultra-low loss can adopt ~ and 12, the counter-bending tight tube fiber unit of every root 1 core ultra-low loss.
The counter-bending tight tube fiber unit of ultra-low loss is made up of colored optical fiber 1, oversheath 2.
Vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable method for making is as follows:
1, the low temperature resistant tight tube fiber unit of ultra-low loss makes
Get out optical fiber pay-off rack, adjustment test is carried out to optical fiber pay-off rack laying tension, tight tube fiber laying tension is adjusted to 0.5N-0.7N, guarantees that tight tube fiber laying tension need be guaranteed unanimously;
Choose extruded mould and carry out extrusion molding outside tight tube fiber, tight tube fiber protective cover material adopts low temperature resistant flame retardant polyolefin jacket material, regulate outer diameter sheath and wall thickness, low temperature resistant tight tube fiber external diameter is adjusted to 0.85 ± 0.05mm, wall thickness 0.25mm ~ 0.3mm, extrusion temperature controls at 135 ~ 160 DEG C, makes low temperature resistant tight tube fiber unit.
2, halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath cellular manufacture
Testing each cage pay off rack laying tension, is 1.0N-1.5N by cage pay off rack tension adjustment, often will coil low temperature resistant tight tube fiber unit according to color sequences, and load onto cage pay off rack, from tracked by guide wheel to head;
Install high-modulus aramid fiber and water resistance aramid fiber reinforcement, high-modulus aramid fiber laying tension is adjusted to 1.0N-1.5N twisting pitch and is modulated to 350-450mm; Water resistance aramid fiber laying tension is adjusted to 1.5N-2N twisting pitch and is modulated to 350-450mm;
The good extruded mould of device, this structure optical cable adopts tubular molding tool, and the stranded rear external diameter of 4 core low temperature resistant tight tube fiber unit is 2.1 ~ 2.2mm, and adding the stranded rear external diameter of aramid fiber is 3.4 ~ 3.5mm, oxygen barrier layer inner sheath external diameter is designed to 5.8 ~ 6.2mm, wall thickness 0.9 ~ 1.0mm; According to stranded external diameter, outer diameter sheath wall thickness calculate core rod external diameter adopts 4.5 ~ 4.8mm, and die sleeve internal diameter adopts 8.5 ~ 9.0mm;
Regulate oxygen barrier layer inner sheath extrusion temperature: oxygen barrier layer inner sheath adopts oxygen barrier layer protective cover material, be 130 ~ 170 DEG C by Extruder temperature scope control, regulate extrusion molding speed, extrusion molding speed is 30 ~ 35m/min, the circular inner sheath of aramid fiber reinforcement outer cladding last layer is followed at tight tube fiber unit by extruded mould, oxygen barrier layer inner sheath external diameter is controlled at 5.8 ~ 6.2mm, wall thickness 0.9 ~ 1.0mm, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 30 ~ 40 DEG C, and cold rinse bank temperature controls at 19 ~ 25 DEG C.
Fire-resistant white clouds master tape is wrapped, stainless steel wire weaves: according to oxygen barrier layer inner sheath external diameter, wrapped overlap joint controls for twining package tape width 10 ~ 15%, calculate that to adopt specification to be that 13-16mm mica tape carries out wrapped the most suitable, when carrying out wrapped, control wrapped tension force well, wrapped Tension design is 4-7N; Mica tape layer adopts diameter 0.07mm stainless steel wire to weave outward, forms stainless steel wire braid.
3, cross-linked polyolefin oversheath is produced
Cross-linked polyolefin oversheath adopts cross-linked polyolefin sheath material, has low smoke and zero halogen, low toxicity, the fire-retardant excellent properties such as corrosion-resistant,
Halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath is through Mica tape, after stainless steel wire braiding, external diameter is 6.6mm ~ 7.0mm, cross-linked polyolefin oversheath external diameter is designed to 9.0mm ~ 10.0mm, wall thickness 1.0mm ~ 1.3mm is according to wrapped external diameter, cross-linked polyolefin oversheath external diameter chooses mould, tubular molding tool selected by mould, core rod external diameter 8.0mm ~ 8.3mm, die sleeve internal diameter 11.3mm ~ 12.1mm;
Install mould, cross-linked polyolefin extrusion temperature controlled at 145 ~ 170 DEG C, regulate mould and extrusion molding speed, extrusion molding speed is 20 ~ 25m/min, external diameter is regulated, outside mica tape, stainless steel wire braid, extrude cross-linked polyolefin sheath material, form cross-linked polyolefin oversheath, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 35 ~ 45 DEG C, cold rinse bank temperature controls at 19 ~ 25 DEG C, through drawing upper dish, makes vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable.
Embodiment:
Vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable method for making, we are for 12 cores.
12 cores we be designed to low temperature resistant tight tube fiber unit 1 core * 12
1, the low temperature resistant tight tube fiber cellular manufacture of 1 core
Get out optical fiber pay-off rack, carry out adjustment test to optical fiber pay-off rack laying tension, optical fiber laying tension is adjusted to 0.5N-0.7N, and optical fiber laying tension need be guaranteed unanimously;
Choose extruded mould and carry out extrusion molding, tight tube fiber protective cover material adopts the tight jacking of low temperature resistant flame retardant, and regulate outer diameter sheath with wall thickness, low temperature resistant tight tube fiber external diameter is adjusted to 0.85 ± 0.05mm, wall thickness 0.25mm ~ 0.3mm.
2, inner sheath cellular manufacture
Testing 12 core cage pay off rack laying tensions, is 1.0N-1.5N by cage pay off rack tension adjustment, and by 12 dish tight tube fiber unit according to color sequences, front 12 colors are 12 chromatograms, load onto cage pay off rack, from tracked by guide wheel to head;
Install aramid fiber reinforcement, high-modulus aramid fiber laying tension is adjusted to 1.0N-1.5N twisting pitch and is modulated to 350-450mm; Water resistance aramid fiber laying tension is adjusted to 1.5N-2N twisting pitch and is modulated to 350-450mm;
The good extruded mould of device, this structure optical cable adopts tubular molding tool, and the stranded rear external diameter of 12 core tight tube fiber unit is 3.6mm, and adding the stranded rear external diameter of aramid fiber is 4.2mm, and inner sheath external diameter is designed to 6.2mm, wall thickness 0.9mm; According to stranded external diameter, outer diameter sheath wall thickness calculate core rod external diameter adopts 5.2mm, and die sleeve internal diameter adopts 8.7mm
Regulate sheath extrusion temperature: inner sheath adopts oxygen barrier layer sheath, be 130 ~ 170 DEG C by Extruder temperature scope control, regulate extrusion molding speed, extrusion molding speed is 30 ~ 35m/min, the circular inner sheath of aramid fiber reinforcement outer cladding last layer is followed at tight tube fiber unit by extruded mould, inner sheath external diameter is controlled at 6.2mm, wall thickness 0.9mm, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 30 ~ 40 DEG C, and cold rinse bank temperature controls at 19 ~ 25 DEG C;
According to inner sheath external diameter, wrapped overlap joint controls for twining package tape width 10 ~ 15%, calculates that to adopt specification to be that 16mm mica tape carries out wrapped the most suitable, and when carrying out wrapped, control wrapped tension force well, wrapped Tension design is 4-7N.Mica tape external application diameter 0.07mm stainless steel wire weaves.
3, oversheath is produced
Oversheath adopts cross-linked polyolefin sheath material, has low smoke and zero halogen, low toxicity, the fire-retardant excellent properties such as corrosion-resistant;
Inner sheath is through Mica tape, and after stainless steel wire braiding, external diameter is 6.8mm, and oversheath external diameter is designed to 9.2mm, and wall thickness 1.2mm is according to wrapped external diameter, and oversheath external diameter chooses mould, and tubular molding tool selected by mould, core rod external diameter 8.0mm, die sleeve internal diameter 11.9mm;
Install mould, cross-linked polyolefin extrusion temperature controlled at 145 ~ 170 DEG C, regulate mould with extrusion molding speed, extrusion molding speed is 20 ~ 25m/min, external diameter is regulated, outside mica tape, stainless steel wire braid, extrude cross-linked polyolefin sheath material, form oversheath, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 35 ~ 45 DEG C, cold rinse bank temperature controls at 19 ~ 25 DEG C, through drawing upper dish, makes vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable.
Claims (3)
1. a vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable, is characterized in that: be made up of ultra-low loss low temperature resistant tight tube fiber unit, high-modulus aramid fiber water resistance aramid fiber mixing reinforcement, halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath, fire-resistant white clouds master tape lapping layer, stainless steel wire braided wires layer, cross-linked polyolefin oversheath;
The counter-bending tight tube fiber unit of ultra-low loss adopts low temperature resistant flame retardant polyolefin jacket material to carry out extrusion molding sheath outward in ultra-low loss bend insensitive fiber to make, as basic light unit;
Stranded by many ultra-low loss counter-bending tight tube fiber unit, ultra-low loss counter-bending tight tube fiber unit stranded layer adopts high-modulus aramid fiber and water resistance aramid fiber to make high-modulus aramid fiber water resistance aramid fiber mixing reinforcement outward, at high-modulus aramid fiber water resistance aramid fiber mixing reinforcement outer extrusion molding encapsulating oxygen barrier layer inner sheath, oxygen barrier layer inner sheath carries out wrapped formation fire-resistant white clouds master tape lapping layer with fire-resistant white mica band outward again, fire-resistant white clouds master tape lapping layer is outer forms stainless steel wire braided wires layer in order to stainless steel wire braiding again, at fire-resistant white clouds master tape lapping layer, stainless steel wire braid outer extrusion molding encapsulating cross-linked polyolefin oversheath.
2. vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable according to claim 1, is characterized in that: the counter-bending tight tube fiber unit of ultra-low loss can adopt 1 ~ 12, the counter-bending tight tube fiber unit of every root 1 core ultra-low loss.
3. vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable method for making according to claim 1, is characterized in that:
(1) the low temperature resistant tight tube fiber unit of ultra-low loss makes
Get out optical fiber pay-off rack, adjustment test is carried out to optical fiber pay-off rack laying tension, tight tube fiber laying tension is adjusted to 0.5N-0.7N, guarantees that tight tube fiber laying tension need be guaranteed unanimously;
Choose extruded mould and carry out extrusion molding outside tight tube fiber, tight tube fiber protective cover material adopts low temperature resistant flame retardant polyolefin jacket material, regulate outer diameter sheath and wall thickness, low temperature resistant tight tube fiber external diameter is adjusted to 0.85 ± 0.05mm, wall thickness 0.25mm ~ 0.3mm, extrusion temperature controls at 135 ~ 160 DEG C, makes low temperature resistant tight tube fiber unit;
(2) halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath cellular manufacture
Testing each cage pay off rack laying tension, is 1.0N-1.5N by cage pay off rack tension adjustment, often will coil low temperature resistant tight tube fiber unit according to color sequences, and load onto cage pay off rack, from tracked by guide wheel to head;
Install high-modulus aramid fiber and water resistance aramid fiber reinforcement, high-modulus aramid fiber laying tension is adjusted to 1.0N-1.5N twisting pitch and is modulated to 350-450mm; Water resistance aramid fiber laying tension is adjusted to 1.5N-2N twisting pitch and is modulated to 350-450mm;
The good extruded mould of device, this structure optical cable adopts tubular molding tool, and the stranded rear external diameter of low temperature resistant tight tube fiber unit is 2.1 ~ 3.6mm, and adding the stranded rear external diameter of aramid fiber is 3.4 ~ 4.2mm, and oxygen barrier layer inner sheath external diameter is designed to 5.8 ~ 6.2mm, wall thickness 0.9 ~ 1.0mm; According to stranded external diameter, outer diameter sheath wall thickness calculate core rod external diameter adopts 4.5 ~ 5.2mm, and die sleeve internal diameter adopts 8.5 ~ 9.0mm;
Regulate oxygen barrier layer inner sheath extrusion temperature: oxygen barrier layer inner sheath adopts the halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer protective cover material of oxygen index 45, it is 130 ~ 170 DEG C by Extruder temperature scope control, regulate extrusion molding speed, extrusion molding speed is 30 ~ 35m/min, the circular inner sheath of aramid fiber reinforcement outer cladding last layer is followed at tight tube fiber unit by extruded mould, oxygen barrier layer inner sheath external diameter is controlled at 5.8 ~ 6.2mm, wall thickness 0.9 ~ 1.0mm, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 30 ~ 40 DEG C, and cold rinse bank temperature controls at 19 ~ 25 DEG C;
Fire-resistant white clouds master tape is wrapped, stainless steel wire weaves: according to oxygen barrier layer inner sheath external diameter, wrapped overlap joint controls for twining package tape width 10 ~ 15%, calculate that to adopt specification to be that 13-16mm mica tape carries out wrapped the most suitable, when carrying out wrapped, control wrapped tension force well, wrapped Tension design is 4-7N; Mica tape layer adopts diameter 0.07mm stainless steel wire to weave outward, forms stainless steel wire braid;
(3) cross-linked polyolefin oversheath is produced
Cross-linked polyolefin oversheath adopts cross-linked polyolefin sheath material, has low smoke and zero halogen, low toxicity, the fire-retardant excellent properties such as corrosion-resistant;
Halogen-free and low-smoke flame-retardant polyolefin oxygen barrier layer inner sheath is through Mica tape, after stainless steel wire braiding, external diameter is 6.6mm ~ 7.0mm, cross-linked polyolefin oversheath external diameter is designed to 9.0mm ~ 10.0mm, wall thickness 1.0mm ~ 1.3mm is according to wrapped external diameter, cross-linked polyolefin oversheath external diameter chooses mould, tubular molding tool selected by mould, core rod external diameter 8.0mm ~ 8.3mm, die sleeve internal diameter 11.3mm ~ 12.1mm;
Install mould, cross-linked polyolefin extrusion temperature controlled at 145 ~ 170 DEG C, regulate mould and extrusion molding speed, extrusion molding speed is 20 ~ 25m/min, external diameter is regulated, outside mica tape, stainless steel wire braid, extrude cross-linked polyolefin sheath material, form cross-linked polyolefin oversheath, through hot water storgae, cold rinse bank twice cooling, hot water storgae temperature controls at 35 ~ 45 DEG C, cold rinse bank temperature controls at 19 ~ 25 DEG C, through drawing upper dish, makes vessel low-smoke halogen-free low-toxicity flame-retardant flexible optical cable.
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| CN105974538A (en) * | 2016-06-22 | 2016-09-28 | 江苏中天科技股份有限公司 | Full dry type bending-resistant pipeline output cable and manufacturing method thereof |
| CN107272131A (en) * | 2017-08-05 | 2017-10-20 | 南京华信藤仓光通信有限公司 | A kind of flexible flame-proof cable of all dielectric |
| CN109375326A (en) * | 2018-11-08 | 2019-02-22 | 江苏中天科技股份有限公司 | A kind of optical fiber cable for field operation and preparation method thereof |
| CN110307914A (en) * | 2019-07-17 | 2019-10-08 | 华中科技大学 | A kind of fibre optic temperature sensor and preparation method thereof |
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Application publication date: 20150429 |