CN110255927A - A kind of metallic plastron layer optical fiber and its production technology - Google Patents
A kind of metallic plastron layer optical fiber and its production technology Download PDFInfo
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- CN110255927A CN110255927A CN201910484770.0A CN201910484770A CN110255927A CN 110255927 A CN110255927 A CN 110255927A CN 201910484770 A CN201910484770 A CN 201910484770A CN 110255927 A CN110255927 A CN 110255927A
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- optical fiber
- layer
- metallic plastron
- plastron
- metallic
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/0253—Controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/42—Coatings containing inorganic materials
- C03C25/46—Metals
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
A kind of metallic plastron layer optical fiber of the present invention and its production technology, include sandwich layer 101, the sandwich layer 101 is wrapped with covering 102, and the covering 102 is wrapped with metallic plastron layer 103.A kind of production technology of metallic plastron layer optical fiber of the present invention, Step 1: wire drawing: carrying out wire drawing to quartzy prefabricated rods；Step 2: heat preservation: being kept the temperature to the optical fiber after step 1 wire drawing；Step 3: coating；Step 4: cooling: the optical fiber in step 3 coated with metallic plastron layer carries out under the protection of inert gas air-cooled by cooling tube；Step 5: winding: the cooling metallic plastron layer optical fiber completed being wound on fiber reel using take-up.A kind of metallic plastron layer optical fiber of the present invention and its production technology can be realized short-term 500 DEG C of (8 hours) tolerable temperature, 400 DEG C of long-term tolerable temperature of use condition.
Description
Technical field
The present invention relates to a kind of high-temperature resistant optical fibers, are the high-temperature resistant optical fiber of metal more particularly, to a kind of coat, belong to
Technical field of optical fiber.
Background technique
Currently, there are two types of classification for high-temperature resistant optical fiber:
One, divide from the long-term tolerable temperature of optical fiber, high-temperature resistant optical fiber can be divided into the resistance to height of medium temperature high-temperature resistant optical fiber, high temperature
Warm optical fiber and superhigh temperature high-temperature resistant optical fiber, long-term tolerable temperature are respectively 150~200 DEG C, and 300~350 DEG C, 400~700
℃；
Two, divide from the material properties of outer coat, high-temperature resistant optical fiber can be divided into, high temperature resistant acrylic resin coating light
Fibre, high temperature resistant silicon gel coating optical fiber, polyimides (PI) coated optical fiber and metal coated fiber, long-term tolerable temperature difference
It is 150~200 DEG C, 150~200 DEG C, 300~350 DEG C, 400~700 DEG C.
In existing high molecular material, polyimides (PI) is a kind of high molecular material for integrating numerous performances,
Main performance includes: that heat resistance is good, and glass transition temperature is 350 DEG C~400 DEG C, and decomposition starting temperature is greater than 500 DEG C；It is resistance to
Cryogenic property is good, is not broken at -200 DEG C or less；Compared to other high molecular materials, thermal expansion coefficient is lower, can reach 10-
6/℃；With excellent mechanical performance, tensile strength is greater than 1000MPa.Polyimide coating optical fiber can be in 300 DEG C of air atmosphere
Enclose lower long-time service, at 300 DEG C~400 DEG C can short-period used, therefore its application power for not having 400 DEG C；
And now in all types of high-temperature resistant optical fibers, only metal coated fiber can be higher than 400 DEG C of air atmosphere environment
Lower application.Relative to other high-temperature resistant optical fibers, the advantage of metallic plastron layer optical fiber is: the thermal expansion coefficient of metal coating is low, base
This is in the same order of magnitude with silica fibre；Corrosion resistance, the resistance to stress of metal coating are best；Low temperature properties are best, can-
It is used continuously at 269 DEG C；Metal coating and fibre cladding surface binding force are strong, mechanical strength with higher；Metal coating can
Erosion with exclusion of water, hydrogen to inside of optical fibre；It can be with metal welding method welding optic fibre.
In existing market, only the foreign vendors such as Corning, OFS, Fibercore be directed to high temperature high-temperature resistant optical fiber
There is matured product sale, however only having extremely a small number of foreign vendor such as Fiberguide for superhigh temperature metal coated fiber has
Related product is released.Nowadays, the high-temperature resistant optical fiber of domestic manufacturers is mainly gathered in medium temperature region, high temperature and superhigh temperature fiber products
External import is all relied on, since it is related to the Sensitive Domains such as military affairs, exploration, aerospace, the external crucial core in its preparation
The heart technically realizes technology blockage to China, therefore the high-temperature resistant optical fiber for developing China must be based on independent research.
To retrieve: Chinese patent CN107315230A discloses " a kind of optical fiber being related to comprising metallization item or coating ",
The metallized optical fibre by with acrylic compounds coating and metal strip form, and unspecified metal strip with have acrylic compounds
How coated optical fiber combines, and has only done simple elaboration to the composition of metallized optical fibre, does not there is a kind of metallized optical fibre system
Standby description of the process.
Chinese patent CN109180023A discloses " a kind of high-temperature resistant optical fiber and preparation method thereof ", and in particular to a kind of low
The coating material of high-temperature resistant optical fiber of loss and preparation method thereof, the high-temperature resistant optical fiber is main or by acrylic polymer group
At, and its tolerable temperature is only 150 DEG C, and preparation method is also conventional optical fiber production mode.
Chinese patent CN102360096A discloses " a kind of high-temperature resistant optical fiber and its processing technology ", such high-temperature resistant optical fiber
Including fibre core, covering and the double-deck coat, precoating is first carried out to optical fiber using ordinary optic fibre coating, is carried out using ultraviolet light pre-
Solidification, it is secondary to be coated using modified polyimide coating, solidified using ultraviolet light.This kind of production technology can give birth to
Output is resistant to the optical fiber of 300 DEG C of high temperature, but is not still able to satisfy 400 DEG C even 500 DEG C of use environment.
In conclusion the country does not have the technology that can be realized the high temperature optical fiber that production reaches 400 DEG C of heatproofs also at present.
Summary of the invention
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of metallic plastron layer optical fiber and its production technology, the gold
Belonging to clothing layer optical fiber can be realized short-term 500 DEG C of (8 hours) tolerable temperature, 400 DEG C of long-term tolerable temperature of use condition, and
This environment kind is still able to maintain the transmission reliability of optical fiber；Meanwhile the production technology can be realized the full stream of metallic plastron layer optical fiber
The production of journey on-line continuous.
The object of the present invention is achieved like this:
A kind of metallic plastron layer optical fiber, includes sandwich layer, and the sandwich layer is wrapped with covering, and the covering is wrapped with metal
Clothing layer.
A kind of metallic plastron layer optical fiber of the present invention, the sandwich layer and covering constitute single mode optical fiber, multimode fibre or polarization maintaining optical fibre.
The material of a kind of metallic plastron layer optical fiber of the present invention, the metallic plastron layer is gold, silver or aluminium, and metallic plastron layer directly wraps
It is wrapped on covering, no other non-metal kind dope layers are as middle layer；
A kind of metallic plastron layer optical fiber of the present invention, the metallic plastron layer be single-layer metal coat or multiple layer metal coating according to
The lamination that secondary coating is constituted.
A kind of production technology of metallic plastron layer optical fiber, it is characterised in that: the processing step are as follows:
Step 1: wire drawing: carrying out wire drawing to quartzy prefabricated rods；
Step 2: heat preservation: being kept the temperature to the optical fiber after step 1 wire drawing；
Step 3: coating: being coating heating system below holding furnace, coating heating system includes heating furnace and coating
Device；Metal charge is heated to molten condition by heating furnace；The metal charge of molten condition is coated on fiber outer surface by applicator, and
And guarantee the metal charge and air exclusion of molten condition in coating procedure, metal charge surface oxidation is prevented, influences to coat effect；
Step 4: cooling: the optical fiber in step 3 coated with metallic plastron layer is by cooling tube under the protection of inert gas
It carries out air-cooled；
Step 5: winding: the cooling metallic plastron layer optical fiber completed being wound on fiber reel using take-up.
A kind of production technology of metallic plastron layer optical fiber of the present invention in the step 1, uses pyrographite resistance-heated furnace
The quartzy prefabricated rods prepared are heated, the prefabricated nose of the quartz is to draw wimble fraction, by quartzy preform cone head point
When being heated to 2000 ± 100 DEG C, conehead realizes wire drawing partially due to gravity is vertically fallen naturally.
A kind of production technology of metallic plastron layer optical fiber of the present invention, in the step 2, below pyrographite resistance-heated furnace
Holding furnace is installed, when which can guarantee that optical fiber comes out from the muffle tube of pyrographite resistance-heated furnace, guarantees optical fiber
The uniformity of temperature；The holding furnace is able to carry out gradient temperature control simultaneously, can guarantee that the top-down temperature of optical fiber carries out gradient change
Change, it is ensured that it, which can be avoided temperature decrease, influences coating effect；The holding furnace can make the temperature of optical fiber be maintained at 1000 ± 200
℃。
A kind of production technology of metallic plastron layer optical fiber of the present invention, in the step 4, equipped with cold below coating heating system
But it manages, for cooling tube for guaranteeing that the optical fiber for being coated with metal is able to carry out slow cooling, the cooling tube is double-layer hollow pipe, cooling
Lead to the inert gases such as argon gas, helium inside pipe.
Compared with prior art, the beneficial effects of the present invention are:
Metallic plastron layer optical fiber of the invention can be realized short-term 500 DEG C of (8 hours) tolerable temperature, long-term tolerable temperature 400
DEG C use condition, and be still able to maintain the transmission reliability of optical fiber in this environment kind.The sieve greater than 100Kpsi can be born simultaneously
Tension is selected, and the added losses after high temperature are less than 0.2dB/km.The preparation process flow energy of metallic plastron layer optical fiber of the invention
Effectively guarantee the quality conformance of optical fiber entirety.Metallic plastron layer optical fiber preparation process of the invention coats light with conventional coating
Fibre is compared, finer to the temperature control of entire drawing process, and is effective to ensure that the coating of metallic plastron layer optical fiber is equal
Even property, promotes the mechanical strength of optical fiber, guarantees the quality stability of subsequent optical fiber application process.
Detailed description of the invention
Fig. 1 is a kind of structure chart of metallic plastron layer optical fiber of the present invention.
Fig. 2 is the side view of applicator in a kind of production technology of metallic plastron layer optical fiber of the present invention.
Fig. 3 is the top view of applicator in a kind of production technology of metallic plastron layer optical fiber of the present invention.
Wherein:
Sandwich layer 101, covering 102, metallic plastron layer 103；
Feed inlet 201, sealing gland lid 202, diffluence pass 203, cavity 204, coating die 205.
Specific embodiment
Referring to Fig. 1, a kind of metallic plastron layer optical fiber of the present invention, includes sandwich layer 101, is wrapped up outside the sandwich layer 101
There is covering 102, the covering 102 is wrapped with metallic plastron layer 103；
Further, the sandwich layer 101 and covering 102 constitute single mode optical fiber, multimode fibre or polarization maintaining optical fibre；
Further, the material of the metallic plastron layer 103 is gold, silver or aluminium, and metallic plastron layer 103 is directly coated in covering
On 102, no other non-metal kind dope layers are as middle layer；
Further, the metallic plastron layer 103 is single-layer metal coat or multiple layer metal coating successively coating composition
Lamination.
A kind of production technology of metallic plastron layer optical fiber, the processing step are as follows:
Step 1: wire drawing: being heated the quartzy prefabricated rods prepared using pyrographite resistance-heated furnace, the quartz
Prefabricated nose is to draw wimble fraction, and when quartzy preform cone head point is heated to 2000 ± 100 DEG C, cone head part branch is due to weight
Power effect nature is vertically fallen, and realizes the wire drawing of optical fiber；The temperature of pyrographite resistance-heated furnace can be according to actual fiber simultaneously
Demand be adjusted, match suitable quartzy prefabricated rods into rod speed, guarantee optical fiber can with stable speed, standard it is several
What size carries out wire drawing；
Step 2: heat preservation: installing holding furnace below pyrographite resistance-heated furnace, which can guarantee optical fiber from height
When coming out at the muffle tube of fire stons ink resistance-heated furnace, guarantee the uniformity of fiber optic temperature；The holding furnace is able to carry out ladder simultaneously
Temperature control is spent, can guarantee that the top-down temperature of optical fiber carries out change of gradient, it is ensured that it, which can be avoided temperature decrease, influences coating effect
Fruit；The holding furnace can make the temperature of optical fiber be maintained at 1000 ± 200 DEG C；
Step 3: coating: being coating heating system below holding furnace, coating heating system includes heating furnace and coating
Device；Heating furnace is wrapped in applicator surrounding, and heating furnace is for providing the temperature that metal coating material reaches molten condition；The coating
Device center is provided with wire through-hole along its axis, and the bottom of the wire through-hole is equipped with the coating die 205 passed through for optical fiber,
Feed inlet 201 is provided at the top of the applicator, molten metal coating material enters the cavity of applicator via feed inlet 201
In 204, it can effectively avoid the metal coating material of molten condition from touching optical fiber by the design of feed inlet 201 and cause its wind being broken
Danger；It is provided with diffluence pass 203 on the inner wall of the wire through-hole, the diffluence pass 203 is by the vestibule phase of cavity 204 and wire through-hole
Connection, and diffluence pass 203 is located at the top of coating die 205；Preferably, gas is installed on the open end of above-mentioned feed inlet 201
Capping 202, which is connected with inert gas source, for being passed through the inert gases such as argon gas, helium, to guarantee molten
The metal coating material and air exclusion for melting state, prevent metal coating material surface oxidation, influence to coat effect；Preferably, it coats
The material of device is higher melting-point alloy or pure quartz, guarantees the molten condition of coating metal；
Step 4: cooling: cooling tube being housed, cooling tube is used to guarantee to be coated with the optical fiber energy of metal below coating heating system
Slow cooling is enough carried out, the cooling tube is double-layer hollow pipe, leads to the inert gases such as argon gas, helium inside cooling tube；
Step 5: winding: the cooling metallic plastron layer optical fiber completed being wound in fiber reel using take-up, completes resistance to height
The preparation of warm optical fiber.
In addition: it should be noted that above-mentioned specific embodiment is only a prioritization scheme of this patent, the skill of this field
Any change or improvement that art personnel are done according to above-mentioned design, within the protection domain of this patent..
Claims (8)
1. a kind of metallic plastron layer optical fiber includes sandwich layer (101), the sandwich layer (101) is wrapped with covering (102), feature
Be: the covering (102) is wrapped with metallic plastron layer (103).
2. a kind of metallic plastron layer optical fiber as described in claim 1, it is characterised in that: the sandwich layer (101) and covering (102) are constituted
Single mode optical fiber, multimode fibre or polarization maintaining optical fibre.
3. a kind of metallic plastron layer optical fiber as described in claim 1, it is characterised in that: the material of the metallic plastron layer (103) is
Gold, silver or aluminium, metallic plastron layer (103) are directly coated on covering (102).
4. a kind of metallic plastron layer optical fiber as described in claim 1, it is characterised in that: the metallic plastron layer (103) is single-layer metal
Coat or multiple layer metal coating successively coat the lamination of composition.
5. a kind of production technology of metallic plastron layer optical fiber, it is characterised in that: the processing step are as follows:
Step 1: wire drawing: carrying out wire drawing to quartzy prefabricated rods；
Step 2: heat preservation: being kept the temperature to the optical fiber after step 1 wire drawing；
Step 3: coating: being coating heating system below holding furnace, coating heating system includes heating furnace and applicator；Add
Metal charge is heated to molten condition by hot stove；The metal charge of molten condition is coated on fiber outer surface by applicator, and
The metal charge and air exclusion for guaranteeing molten condition in coating procedure, prevent metal charge surface oxidation, influence to coat effect；
Step 4: cooling: the optical fiber in step 3 coated with metallic plastron layer carries out under the protection of inert gas by cooling tube
It is air-cooled；
Step 5: winding: the cooling metallic plastron layer optical fiber completed being wound on fiber reel using take-up.
6. a kind of production technology of metallic plastron layer optical fiber as claimed in claim 5, it is characterised in that: in the step 1, use
Pyrographite resistance-heated furnace heats the quartzy prefabricated rods prepared, and the prefabricated nose of the quartz is to draw wimble fraction, will
When quartzy preform cone head point is heated to 2000 ± 100 DEG C, conehead partially due to gravity is vertically fallen naturally, draw by realization
Silk.
7. a kind of production technology of metallic plastron layer optical fiber as claimed in claim 5, it is characterised in that: in the step 2, high temperature
Holding furnace is installed, which can guarantee optical fiber from the muffle tube of pyrographite resistance-heated furnace below graphite resistance heating furnace
When place comes out, guarantee the uniformity of fiber optic temperature；The holding furnace is able to carry out gradient temperature control simultaneously, can guarantee optical fiber from top to bottom
Temperature carry out change of gradient, it is ensured that its can be avoided temperature decrease influence coating effect；The holding furnace can make the temperature of optical fiber
Degree is maintained at 1000 ± 200 DEG C.
8. a kind of production technology of metallic plastron layer optical fiber as claimed in claim 5, it is characterised in that: in the step 4, coating
Cooling tube is housed, cooling tube is for guaranteeing that the optical fiber for being coated with metal is able to carry out slow cooling, the cooling below heating system
Pipe is double-layer hollow pipe, leads to the inert gases such as argon gas, helium inside cooling tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910484770.0A CN110255927A (en) | 2019-06-05 | 2019-06-05 | A kind of metallic plastron layer optical fiber and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910484770.0A CN110255927A (en) | 2019-06-05 | 2019-06-05 | A kind of metallic plastron layer optical fiber and its production technology |
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| CN110255927A true CN110255927A (en) | 2019-09-20 |
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| CN201910484770.0A Withdrawn CN110255927A (en) | 2019-06-05 | 2019-06-05 | A kind of metallic plastron layer optical fiber and its production technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111427115A (en) * | 2020-04-13 | 2020-07-17 | 武汉理工大学 | Surface modified metal coating optical fiber and preparation method and preparation system thereof |
| CN112174513A (en) * | 2020-10-12 | 2021-01-05 | 浙江联飞光纤光缆有限公司 | High-speed optical fiber drawing system |
| CN114315125A (en) * | 2021-11-25 | 2022-04-12 | 江苏法尔胜光电科技有限公司 | Preparation process of non-twist polarization maintaining optical fiber |
| CN115321840A (en) * | 2022-09-01 | 2022-11-11 | 长飞光纤光缆股份有限公司 | Hot melt adhesive coating system for optical fiber |
-
2019
- 2019-06-05 CN CN201910484770.0A patent/CN110255927A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111427115A (en) * | 2020-04-13 | 2020-07-17 | 武汉理工大学 | Surface modified metal coating optical fiber and preparation method and preparation system thereof |
| CN111427115B (en) * | 2020-04-13 | 2021-09-10 | 武汉理工大学 | Surface modified metal coating optical fiber and preparation method and preparation system thereof |
| CN112174513A (en) * | 2020-10-12 | 2021-01-05 | 浙江联飞光纤光缆有限公司 | High-speed optical fiber drawing system |
| CN114315125A (en) * | 2021-11-25 | 2022-04-12 | 江苏法尔胜光电科技有限公司 | Preparation process of non-twist polarization maintaining optical fiber |
| WO2023093239A1 (en) * | 2021-11-25 | 2023-06-01 | 江苏法尔胜光电科技有限公司 | Preparation process of twist-free polarization-maintaining optical fiber |
| CN115321840A (en) * | 2022-09-01 | 2022-11-11 | 长飞光纤光缆股份有限公司 | Hot melt adhesive coating system for optical fiber |
| CN115321840B (en) * | 2022-09-01 | 2023-11-28 | 长飞光纤光缆股份有限公司 | Hot melt adhesive coating system for optical fiber |
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Application publication date: 20190920 |