CN106840136A - The preparation method and fiber optic loop of a kind of fiber optic loop - Google Patents
The preparation method and fiber optic loop of a kind of fiber optic loop Download PDFInfo
- Publication number
- CN106840136A CN106840136A CN201710188728.5A CN201710188728A CN106840136A CN 106840136 A CN106840136 A CN 106840136A CN 201710188728 A CN201710188728 A CN 201710188728A CN 106840136 A CN106840136 A CN 106840136A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- optic loop
- fiber optic
- polyamide
- heating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
-
- 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
- C03C25/48—Coating with two or more coatings having different compositions
- C03C25/50—Coatings containing organic materials only
Abstract
The application is related to a kind of preparation method of fiber optic loop, at least comprises the following steps：Preform is prepared into bare fibre；The first material and the second material are coated successively on the surface of bare fibre, obtain the optical fiber with coat；First material is thermosets, and the second material is heat-fusible materials；To under vacuum be heated after optical fiber coiling cyclization, prepare fiber optic loop.Compared in the prior art that fiber optic loop bonding is completed by impregnation, online gluing and interlayer brush coating, the application is by the material in optical fiber surface coating hot melt, by optical fiber coiling cyclization, heat under vacuum, eliminate the gap between optical fiber and vacuole, realize closely bonding between optical fiber, finally give fiber optic loop product, its consistency and reliability are improved, and stable mechanical property can realize the automated production of fiber optic loop.
Description
Technical field
The application is related to technical field of optical fiber sensing, and in particular to a kind of preparation method of fiber optic loop, and party's legal system
The standby fiber optic loop for obtaining.
Background branch art
The preparation of fiber optic loop is the most complicated part of optical fibre gyro, at present for prepared by manual type.In the prior art, lead to
Fiber optic loop is prepared frequently with three kinds of modes：The first is during Optical Fiber Winding cyclization, often around full one layer in optical fiber surface
One layer of glue is brushed, next layer of winding and brush coating is then proceeded to, until around complete all length, final curing cyclization.It is for second
Optical fiber all after winding cyclization, fiber optic loop is immersed in glue, glue is entered between optical fiber by way of vacuum and pressurization
Gap, final curing.The third is that in fiber optic loop winding process, optical fiber initially passes through a painting sealing rubber die, in optical fiber surface
Apply last layer glue, further around on structural member, final curing.Be solidified with heat cure and photocuring two ways, heat cure refer to
Under conditions of heating, glue molecular structure is reacted, and solid is converted into by liquid.Photocuring refers to glue in ultraviolet light
Lower generation cross linking reaction and solidification.
In above-mentioned three kinds cyclic modes, with the reduction of optical fiber ring size, optical fiber is more and more thinner, and glue is not easily penetrated into light
Gap between fibre, realizing for gum dipping process is more and more difficult, it is contemplated that can be phased out.Brush coating and online coating technique need
Manually operated, had a strong impact on the production efficiency around ring operation, it is difficult to ensured the uniformity and reliability of product.
In consideration of it, special propose the application.
The content of the invention
The primary goal of the invention of the application is to propose a kind of preparation method of fiber optic loop.
Second goal of the invention of the application is the fiber optic loop for proposing to be prepared using the method.
In order to complete the purpose of the application, the technical scheme for using for：
The application is related to a kind of preparation method of fiber optic loop, at least comprises the following steps：
Preform is prepared into bare fibre；
The first material and the second material are coated successively on the surface of the bare fibre, obtain the optical fiber with coat；Institute
The first material is stated for thermosets, second material is heat-fusible materials；
To under vacuum be heated after optical fiber coiling cyclization, prepare the fiber optic loop.
Preferably, it is described to include the method that preform prepares bare fibre：Heat the preform simultaneously
Wire drawing is carried out, the temperature of the heating is 2000~3000 DEG C.
Preferably, elastic modelling quantity of the elastic modelling quantity of first material less than second material.
Preferably, the elastic modelling quantity of first material is 0.5~20MPa, the elastic modelling quantity of second material for 1 ×
103~5 × 103MPa。
Preferably, the applied thickness of first material is 10~20 μm, the applied thickness of second material for 10~
20μm。
Preferably, first material is selected from least one in silicone, polyester or polyurethane,
One kind in the preferred condensed type silicone of silicone, add-on type silicone；
The preferred PET of polyester resin, polybutylene terephthalate, poly terephthalic acid two
At least one in allyl ester, ekonol；
In the polyurethane preferred thermoplastic polyurethane elastomer, blending-type polyurethane elastomer, aqueous polyurethane coating
At least one.
Preferably, second material is selected from least one in epoxy resin, Kynoar and polyamide,
One kind of the preferred bisphenol A-type of epoxy resin, glycerol type and alicyclic type；
One kind in the preferred polyvinylidene fluoride homopolymer of Kynoar and polyvinylidene fluoride copolymer；
The polyamide is selected from least in polyamide 6, polyamide 11, polyamide 12, polyamide 66, polyamide 610
Kind.
Preferably, heated under vacuum after the cyclization by the optical fiber coiling, the temperature of the heating for 200~
300 DEG C, the time of the heating is 10~30min.
Preferably, heated under vacuum after the cyclization by the optical fiber coiling, the vacuum of the vacuum condition
It is 1~100Pa.
The application further relates to the fiber optic loop prepared using the application method.
The technical scheme of the application at least has following beneficial effect：
It is complete compared to by impregnation, online gluing and interlayer brush coating this application provides a kind of preparation method of fiber optic loop
Into in the prior art of fiber optic loop bonding, the application coats thermosets and heat-fusible materials successively by optical fiber surface, so
Heating in vacuum after the optical fiber coiling cyclization after coating is obtained into fiber optic loop afterwards, the gap between optical fiber and vacuole, nothing can be eliminated
Need manual intervention to can be realized as closely bonding between optical fiber, improve the uniformity of product and reliability, mechanical property is steady
It is fixed, the automated production of fiber optic loop can be realized.
Brief description of the drawings：
The schematic cross-section of the optical fiber for preparing fiber optic loop that Fig. 1 is provided for the embodiment of the present application.
Wherein：
10- optical fiber；
101- bare fibres；
102- the first material coats；
103- the second material coats.
Specific embodiment
With reference to specific embodiment, the application is expanded on further.It should be understood that these embodiments are merely to illustrate the application
Rather than limitation scope of the present application.
Prepared by traditional fiber completed on fiber-pulling machine, and process is：The preform of quartz glass material enters
Graphite heater furnace on wire drawing machine, heating-up temperature rises to 2000~3000 DEG C, and preform melting draws and attenuates, and is passed down through coating
Applicator die carries out coating coating, and the paint solidification of coating is made subsequently into light curring unit.Optical fiber after coating and solidifying by
Traction unit draws, and is wound on fiber reel.Current ordinary optic fibre coating is all using high speed photocureable coating, by high-power
Paint solidification is fibre coating by photocuring stove.After production obtains finished product optical fiber, then by Optical Fiber Winding cyclization, by impregnation or painting
Glue, solidification obtains optical fiber loop.If online coating during ring, cause optical fiber winding displacement difficult, it is necessary to use manual type
Coiling is carried out, not only efficiency is low, and increased many uncertainties.
The application is related to a kind of preparation method of fiber optic loop, at least comprises the following steps：
First step：Preform is prepared into bare fibre；
Second step：The first material and the second material are coated successively on the surface of bare fibre, obtain the light with coat
It is fine；First material is thermosets, and the second material is heat-fusible materials；
Third step：To under vacuum be heated after optical fiber coiling cyclization, prepare fiber optic loop.
Wherein, can not soften and mould repeatedly the material of system when thermosets refers to heating.Heat-fusible materials refer in a constant temperature
Changing with temperature in the range of degree and being melt into liquid, so that there is certain fluidity, but the constant material of chemical characteristic.It is further excellent
Choosing, the material that the heat-fusible materials in the application are melted when referring to more than 200 DEG C, meanwhile, at such a temperature, thermosetting
The change of property material not generating state.
The application coats thermosets and heat-fusible materials successively by the surface of bare fibre 101, and first is obtained respectively
The material coat 103 of material coat 102 and second, the schematic cross-section of optical fiber 10 is as shown in Figure 1.By optical fiber coiling cyclization
Afterwards, heat under vacuum, the second material coat of different optical fiber ring surfaces melts, so as to be mused together,
So as to eliminate the gap between optical fiber and vacuole, closely bonding between optical fiber is realized, finally give fiber optic loop product, its is consistent
Property and reliability improve, stable mechanical property, so as to the automated production of fiber optic loop can be realized.
In the first step in the application preparation method, heating optical fiber preform simultaneously carries out wire drawing, so as to by predispersed fiber
Rod processed prepares bare fibre；The temperature of heating is 2000~3000 DEG C.The step can be carried out on fiber drawing tower.By quartz
The preform feeding fiber drawing tower of glass material, is heated in tower.Treat that temperature is increased to 2000~3000 DEG C, it is excellent
When electing 2300 DEG C as, preform melting draws and attenuates, and draws and attenuates to the diameter for needing, and obtains the bare fibre of quartz glass.
Improved as one kind of the application preparation method, in the second step in the application preparation method, in bare fibre
Surface coat the first material and the second material successively, materials at two layers forms protective layer in optical fiber surface, obtains with coat
Optical fiber.Elastic modelling quantity of the elastic modelling quantity of the first material less than the second material.I.e. external coating elastic modelling quantity is higher than undercoating, former
Because being that external coating needs to bear the stress of external environment, elastic modelling quantity higher is favorably improved the overall machinery of fiber optic loop
Reliability.Internally coated elastic modelling quantity is smaller, and tensile strength is higher, and fracture elongation becomes than larger to itself flexible or cracking
The adaptability of shape is stronger, can play preferable cushioning effect, can effectively protect silica fibre.
Improved as one kind of the application preparation method, the elastic modelling quantity of the first material is 0.5~20MPa, the second material
Elastic modelling quantity be 1 × 103~5 × 103MPa。
Improved as one kind of the application preparation method, the applied thickness of the first material is 10~20 μm, the second material
Applied thickness is 10~20 μm.For example, for after coating a diameter of 80 μm of optical fiber, can be by total coat radially unilateral thickness
Degree control is at 20~50 μm.
Improved as one kind of the application preparation method, the first material is selected from silicone (Silicones), polyester
In (Polyethylene terephthalate) or polyurethane (Polyurethane Foam, be abbreviated as PU) at least one
Kind.
It is further preferred that silicone is selected from the one kind in condensed type silicone, add-on type silicone.
It is further preferred that polyester may be selected from PET Polyethylene terephthalate,
Abbreviation PET), polybutylene terephthalate (polybutylene terephthalate, abbreviation PBT), poly terephthalic acid
In diallyl (abbreviation PDAP), ekonol (poly-p-hydroxybenzoate, abbreviation PHB) at least one
Kind.
It is further preferred that polyurethane is selected from TPUE (abbreviation TPU), blending-type polyurethane elastomer
At least one in (millable Polyurethane Foam, abbreviation MPU).
Wherein, TPUE, also known as thermoplastic polyurethane rubber, is a kind of (AB)nType block linear polymerization
Thing, A is the polyester or polyethers of HMW (1000~6000), and B is the glycol containing 2~12 carbons, AB chain intersegmentalization
It is diisocyanate to learn structure.
The main processing characteristics of blending-type polyurethane elastomer are the solid rubbers of first synthesis storage stabilization, then using general
The mixing machinery of rubber is processed, and the polyurethane elastomer of thermosetting network molecular structure is obtained.According to main chain soft segment structure,
Blending-type polyurethane can be divided into polyester-type and the major class of polyether-type two.
Aqueous polyurethane coating is the class coating with waterborne polyurethane resin as base-material and with water as decentralized medium.Mainly
Several kinds including heat-cured urethane coatings and etc. the aqueous polyurethane coating containing blocked isocyanate.
Improved as one kind of the application preparation method, the second material is selected from epoxy resin (Epoxy resin), gathers inclined fluorine
In ethene (Polyvinylidene fluoride, abbreviation PVDF) and polyamide (Polyamide Resin, abbreviation PA) extremely
Few one kind.
It is further preferred that epoxy resin is selected from one kind of bisphenol A-type, glycerol type and alicyclic type.
It is further preferred that Kynoar is selected from polyvinylidene fluoride homopolymer and polyvinylidene fluoride copolymer
Kind；One kind in the preferred polyvinylidene fluoride homopolymer of Kynoar and polyvinylidene fluoride copolymer.
It is further preferred that polyamide is selected from polyamide 6 (PA6), polyamide 11 (PA11), polyamide 12 (PAl2), poly-
At least one in acid amides 66 (PA66), polyamide 610 (PA610).
Improved as one kind of the application method, in the third step in the application preparation method, fiber optic loop heating
Temperature is 200~300 DEG C, and the heat time is 10~30min, and vacuum is 1~100Pa.Heating can be straight between terminating rear optical fiber
Connect and be merged, while the tension force of coiling ring can be discharged, improve the performance of fiber optic loop.Also, heating-up temperature should not
More than the resistance to warm spot of the highest of the second material, so ensure that and be firmly bonded between optical fiber, by controlling heat time and temperature,
Gap and the bubble between fiber optic loop are reduced as far as possible.
The application further relates to the fiber optic loop that method is prepared.In sensory field of optic fibre, fiber optic loop refers generally to polarization maintaining optical fibre
Ring, it is the optical fibre device of the multiturn, layering and ring-type using height refraction polarization maintaining optical fibre coiling, is used as optical fibre gyro
Rotation sensitive element.
Embodiment
In following comparative examples and embodiment, reagent, material and the instrument for using as without special explanation,
It is commercially available.
The preparation of fiber optic loop：
1st, heating optical fiber preform and wire drawing is carried out, the temperature of heating is 2300 DEG C；
2nd, the first material and the second material are coated successively on the surface of bare fibre, obtain the optical fiber with coat；First
The species of material and the second material, thickness and characteristic are as shown in table 1；
3rd, will optical fiber coiling cyclization after heat under vacuum, heating and temperature control between for 210~250 DEG C, plus
Hot time control is 15~25min, and vacuum degree control is 40Pa or so, obtains fiber optic loop.
Table 1
Wherein, "-" represents and does not add or use the material.
It is not for limiting claim, any this area skill although the application is disclosed as above with preferred embodiment
Art personnel are not being departed from the premise of the application conceives, and can make some possible variations and modification, therefore the application
The scope that protection domain should be defined by the application claim is defined.
Claims (10)
1. a kind of preparation method of fiber optic loop, it is characterised in that at least comprise the following steps：
Preform is prepared into bare fibre；
The first material and the second material are coated successively on the surface of the bare fibre, obtain the optical fiber with coat；Described
One material is thermosets, and second material is heat-fusible materials；
To under vacuum be heated after optical fiber coiling cyclization, prepare the fiber optic loop.
2. preparation method according to claim 1, it is characterised in that described that preform is prepared into bare fibre
Method includes：Heat the preform and carry out wire drawing, the temperature of the heating is 2000~3000 DEG C.
3. method according to claim 1, it is characterised in that the elastic modelling quantity of first material is less than second material
The elastic modelling quantity of material.
4. method according to claim 1, it is characterised in that the elastic modelling quantity of first material is 0.5~20MPa,
The elastic modelling quantity of second material is 1 × 103~5 × 103MPa。
5. method according to claim 1, it is characterised in that the applied thickness of first material is 10~20 μm, institute
The applied thickness for stating the second material is 10~20 μm.
6. method according to claim 1, it is characterised in that first material is selected from silicone, polyester or polyurethane
In at least one,
One kind in the preferred condensed type silicone of silicone, add-on type silicone；
The preferred PET of polyester resin, polybutylene terephthalate, the allyl of poly terephthalic acid two
At least one in ester, ekonol；
In the polyurethane preferred thermoplastic polyurethane elastomer, blending-type polyurethane elastomer, aqueous polyurethane coating extremely
Few one kind.
7. method according to claim 1, it is characterised in that second material is selected from epoxy resin, Kynoar
With at least one in polyamide,
One kind of the preferred bisphenol A-type of epoxy resin, glycerol type and alicyclic type；
The preferred homopolymers of Kynoar or copolymer；
At least one in the polyamide preferred polyamide 6, polyamide 11, polyamide 12, polyamide 66, polyamide 610.
8. method according to claim 1, it is characterised in that after the cyclization by the optical fiber coiling under vacuum
Heating, the temperature of the heating is 200~300 DEG C, and the time of the heating is 10~30min.
9. method according to claim 8, it is characterised in that after the cyclization by the optical fiber coiling under vacuum
Heating, the vacuum of the vacuum condition is 1~100Pa.
10. the fiber optic loop that a kind of method as any one of claim 1 to 9 is prepared.
Priority Applications (1)
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| CN201710188728.5A CN106840136A (en) | 2017-03-27 | 2017-03-27 | The preparation method and fiber optic loop of a kind of fiber optic loop |
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| CN201710188728.5A CN106840136A (en) | 2017-03-27 | 2017-03-27 | The preparation method and fiber optic loop of a kind of fiber optic loop |
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Family
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579815A (en) * | 2018-12-10 | 2019-04-05 | 中船航海科技有限责任公司 | A kind of fiber optic loop winding clamp with temperature control function |
| CN109913052A (en) * | 2019-03-07 | 2019-06-21 | 王建平 | A kind of optical coating material and preparation method thereof based on silica fibre |
| CN110408279A (en) * | 2018-04-26 | 2019-11-05 | 上海铎奇线缆科技有限公司 | Coating composition and preparation method thereof and optical cable and preparation method thereof |
| CN111153597A (en) * | 2019-12-26 | 2020-05-15 | 中天科技光纤有限公司 | Optical fiber |
| CN114924346A (en) * | 2022-05-31 | 2022-08-19 | 长飞光纤光缆股份有限公司 | Polarization-maintaining three-layer coated optical fiber, coating method, optical fiber ring preparation method and application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408279A (en) * | 2018-04-26 | 2019-11-05 | 上海铎奇线缆科技有限公司 | Coating composition and preparation method thereof and optical cable and preparation method thereof |
| CN109579815A (en) * | 2018-12-10 | 2019-04-05 | 中船航海科技有限责任公司 | A kind of fiber optic loop winding clamp with temperature control function |
| CN109579815B (en) * | 2018-12-10 | 2020-11-17 | 中船航海科技有限责任公司 | Optical fiber ring winding clamp with temperature control function |
| CN109913052A (en) * | 2019-03-07 | 2019-06-21 | 王建平 | A kind of optical coating material and preparation method thereof based on silica fibre |
| CN111153597A (en) * | 2019-12-26 | 2020-05-15 | 中天科技光纤有限公司 | Optical fiber |
| CN114924346A (en) * | 2022-05-31 | 2022-08-19 | 长飞光纤光缆股份有限公司 | Polarization-maintaining three-layer coated optical fiber, coating method, optical fiber ring preparation method and application |
| CN114924346B (en) * | 2022-05-31 | 2024-01-05 | 长飞光纤光缆股份有限公司 | Polarization-maintaining three-layer coated optical fiber, coating method, optical fiber ring preparation method and application |
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Application publication date: 20170613 |