CN115124263A - Strength-adjustable high-temperature-resistant optical fiber and preparation method thereof - Google Patents
Strength-adjustable high-temperature-resistant optical fiber and preparation method thereof Download PDFInfo
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- CN115124263A CN115124263A CN202210672543.2A CN202210672543A CN115124263A CN 115124263 A CN115124263 A CN 115124263A CN 202210672543 A CN202210672543 A CN 202210672543A CN 115124263 A CN115124263 A CN 115124263A
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- 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
- C03C25/104—Coating to obtain optical fibres
- C03C25/1065—Multiple coatings
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- 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
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/328—Polyamides
Abstract
The invention provides a strength-adjustable high-temperature-resistant optical fiber and a preparation method thereof, wherein the optical fiber comprises a glass optical fiber, a first coating and a second coating, the first coating is coated outside the glass optical fiber, and the second coating is coated outside the first coating; the first coating is made of high-temperature-resistant acrylic resin, and the second coating is made of a composite material containing polyimide. The high-temperature-resistant optical fiber adopts the carbon fiber reinforced thermoplastic polyimide composite material as the coating layer, and utilizes the easy processing property of the thermoplastic material and the reinforcement property of the carbon fiber. Meanwhile, the stretch-proofing, bending-resisting and high-temperature-resisting performances of the composite material are changed by adjusting the doping proportion of the carbon fibers and doping different types of carbon fiber materials, so that the purposes of simple method, practicability and performance adjustment are achieved, and the use requirement in a high-temperature environment is met.
Description
Technical Field
The invention relates to the technical field of optical fiber manufacturing, in particular to a strength-adjustable high-temperature-resistant optical fiber and a preparation method thereof.
Background
With the wide application of optical fibers in different fields, common optical fibers are difficult to meet requirements in special environments, such as aerospace, military fields, oil gas detection, sensing and the like, and the application fields have high requirements on the high-temperature resistance of the optical fibers.
The common optical fiber has stable working temperature of-65-85 ℃ and cannot meet the stability in a higher temperature use environment.
Disclosure of Invention
The invention provides a strength-adjustable high-temperature-resistant optical fiber and a preparation method thereof, which are used for solving the problem that the conventional common optical fiber cannot meet the requirement of a high-temperature environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a strength-adjustable high-temperature-resistant optical fiber, which comprises a glass optical fiber, a first coating and a second coating, wherein the first coating is coated outside the glass optical fiber, and the second coating is coated outside the first coating;
the first coating is high-temperature-resistant acrylic resin, and the second coating is a composite material containing polyimide.
Further, the glass optical fiber is any form of silica material optical fiber.
Further, the polyimide is a thermoplastic polyimide.
Further, the composite material comprises a carbon fiber material.
Further, the doping proportion of the carbon fiber material in the composite material is 0-30 wt%.
Further, the coating unilateral thickness of the first coating is 15-35 um.
Further, the coating unilateral thickness of the second coating is 10-30 um.
The invention provides a preparation method of a strength-adjustable high-temperature-resistant optical fiber, which comprises the following steps:
melting, annealing, cooling and drawing the prefabricated rod into a bare glass optical fiber;
passing the bare glass optical fiber through a first coating die, and coating a first coating layer based on a preset temperature and pressure;
after the first coating is completed, the optical fiber is coated with a second coating layer through a second coating die in which a mixture of carbon fibers and thermoplastic polyimide is extruded.
Further, the outer diameter of the bare glass fiber is 60-1000 um.
Further, the doping proportion of the carbon fiber material in the mixture is 0 to 30 wt%.
The effects provided in the summary of the invention are only the effects of the embodiments, not all of the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the high-temperature-resistant optical fiber adopts the carbon fiber reinforced thermoplastic polyimide composite material as the coating layer, and utilizes the easy processing property of the thermoplastic material and the reinforcement property of the carbon fiber. Meanwhile, the stretch-proofing, bending-resisting and high-temperature-resisting performances of the composite material are changed by adjusting the doping proportion of the carbon fibers and doping different types of carbon fiber materials, so that the purposes of simple method, practicability and performance adjustment are achieved, and the use requirement in a high-temperature environment is met.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of an optical fiber according to the present invention;
FIG. 2 is a schematic flow chart of a method for producing an optical fiber according to the present invention;
1 glass optical fiber, 2 first coating, 3 second coating.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1, a strength-adjustable high-temperature resistant optical fiber is characterized in that the optical fiber includes a glass optical fiber 1, a first coating 2 and a second coating 3, the first coating 2 covers the glass optical fiber 1, and the second coating 3 covers the first coating 2.
The glass optical fiber 1 is a quartz material optical fiber in any form.
The first coating 2 is formed by curing a low-modulus high-temperature-resistant acrylic resin material, and the second coating 3 is a composite material containing polyimide.
The second coating 3 is a carbon fiber reinforced thermoplastic polyimide composite material, and the stretch-resistant, bending-resistant and high-temperature-resistant properties of the composite material can be changed by adjusting the doping proportion of carbon fibers and doping different types of carbon fiber materials (different types refer to carbon fiber materials with different elastic modulus).
The doping proportion of the carbon fiber material in the composite material is 0-30 wt%.
The thermoplastic polyimide has high and low temperature performance of 269-280 deg.c for long period without deformation, glass transition temperature up to 260-311 deg.c and thermal decomposition temperature up to 400 deg.c. Compared with the traditional thermosetting material, the processing mode of the thermoplastic material is more diversified, and the production and processing of the product are facilitated.
As shown in fig. 2, the present invention further provides a method for preparing a strength-adjustable high temperature resistant optical fiber, comprising the following steps:
s1, melting, annealing and cooling the prefabricated rod to draw the prefabricated rod into a bare glass optical fiber, wherein the outer diameter of the bare glass optical fiber is 60-1000 um;
s2, enabling the bare glass optical fiber to pass through a first coating die, and coating a first coating on the basis of preset temperature and pressure, wherein the thickness of a single side of the first coating is 15-35 um;
s3, after the first coating is finished, coating a second coating on the optical fiber through a second coating die, extruding a mixture of the carbon fiber and the thermoplastic polyimide in the second coating die, wherein the thickness of the single side of the coating of the second coating is 10-30 um.
The following are examples of the optical fiber provided by the present invention.
Example 1:
the adopted quartz optical fiber is a common non-dispersion displacement single-mode optical fiber, the first coating adopts modified high-temperature-resistant acrylic resin, the optical curing molding is carried out, the elastic modulus after curing is 1.1Mpa, and the outer diameter of the first coating is 190 um. The second coating adopts thermoplasticity polyimide composite, does not mix carbon fiber material, and the second coating external diameter is 250 um. The tensile strength is 4582MPa, the long-term stable temperature resistance is 250 ℃, and the short-term stable temperature resistance is 350 ℃.
Example 2:
the adopted quartz optical fiber is a common non-dispersion displacement single-mode optical fiber, the first coating layer is made of modified high-temperature-resistant acrylic resin and is formed by photocuring, the elastic modulus after curing is 1.1Mpa, and the outer diameter of the first coating layer is 190 microns. The second coating adopts a carbon fiber reinforced thermoplastic polyimide composite material, wherein the doping proportion of carbon fibers (with the elastic modulus of 230GPa) in the composite material is 10 wt%, and the outer diameter of the second coating is 250 um. The tensile strength is 5268MPa, and the temperature can be stably kept at 260 ℃ for a long time and can be kept at 350 ℃ for a short time.
Example 3:
the adopted quartz optical fiber is a common non-dispersion displacement single-mode optical fiber, the first coating layer is made of modified high-temperature-resistant acrylic resin and is formed by photocuring, the elastic modulus after curing is 1.1Mpa, and the outer diameter of the first coating layer is 190 microns. The second coating adopts a carbon fiber reinforced thermoplastic polyimide composite material, wherein the doping proportion of carbon fibers (with the elastic modulus of 250GPa) in the composite material is 10 wt%, and the outer diameter of the second coating is 250 um. The tensile strength is 5694MPa, the temperature is 280 ℃ stable for a long time, and the temperature is 360 ℃ short time.
Example 4:
the adopted quartz optical fiber is a common non-dispersion displacement single-mode optical fiber, the first coating adopts modified high-temperature-resistant acrylic resin, the optical curing molding is carried out, the elastic modulus after curing is 1.1MPa, and the outer diameter of the first coating is 190 micrometers. The second coating adopts a carbon fiber reinforced thermoplastic polyimide composite material, wherein the doping proportion of carbon fibers (with the elastic modulus of 230GPa) in the composite material is 30 wt%, and the outer diameter of the second coating is 250 um. Tensile strength is 7535MPa, and the temperature can be stably kept at 290 ℃ for a long time and can be kept at 360 ℃ for a short time.
Example 5:
the adopted quartz optical fiber is a common non-dispersion displacement single-mode optical fiber, the first coating is made of modified high-temperature-resistant acrylic resin and is formed by photocuring, the elastic modulus after curing is 1.1MPa, and the outer diameter of the first coating is 190 microns. The second coating is made of a carbon fiber reinforced thermoplastic polyimide composite material, wherein the doping proportion of carbon fibers (with the elastic modulus of 250GPa) in the composite material is 30 wt%, and the outer diameter of the second coating is 250 um. The tensile strength is 7985MPa, and the temperature of the product can be stably and stably controlled to 330 ℃ for a long time and 400 ℃ for a short time.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A strength-adjustable high-temperature-resistant optical fiber is characterized in that the optical fiber comprises a glass optical fiber, a first coating and a second coating, wherein the first coating is coated outside the glass optical fiber, and the second coating is coated outside the first coating;
the first coating is made of high-temperature-resistant acrylic resin, and the second coating is made of a composite material containing polyimide.
2. The strength-tunable high temperature resistant optical fiber according to claim 1, wherein the glass optical fiber is any type of silica material optical fiber.
3. The strength-tunable, high temperature resistant optical fiber of claim 1, wherein the polyimide is a thermoplastic polyimide.
4. The strength-tunable, high temperature resistant optical fiber of claim 1, wherein the composite material comprises a carbon fiber material.
5. The intensity-tunable high-temperature resistant optical fiber according to claim 4, wherein the carbon fiber material is doped in the composite material in a proportion of 0 to 30 wt%.
6. The intensity tunable high temperature resistant optical fiber of claim 1, wherein the first coating has a single thickness of 15-35 um.
7. The strength tunable high temperature resistant optical fiber of claim 1, wherein the second coating has a single thickness of 10-30 μm.
8. A preparation method of a strength-adjustable high-temperature-resistant optical fiber is characterized by comprising the following steps:
melting, annealing, cooling and drawing the prefabricated rod into a bare glass optical fiber;
passing the bare glass optical fiber through a first coating die, and coating a first coating layer based on a preset temperature and pressure;
after the first coating is completed, the optical fiber is coated with a second coating layer through a second coating die in which a mixture of carbon fiber and thermoplastic polyimide is extruded.
9. The method of claim 8, wherein the bare glass fiber has an outer diameter of 60-1000 um.
10. The method of claim 8, wherein the carbon fiber material is doped in the mixture in a proportion of 0 to 30 wt%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210672543.2A CN115124263A (en) | 2022-06-15 | 2022-06-15 | Strength-adjustable high-temperature-resistant optical fiber and preparation method thereof |
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| CN202210672543.2A CN115124263A (en) | 2022-06-15 | 2022-06-15 | Strength-adjustable high-temperature-resistant optical fiber and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257422A (en) * | 2013-05-20 | 2013-08-21 | 江苏南方通信科技有限公司 | Novel guide optical fiber |
| CN109239880A (en) * | 2018-12-07 | 2019-01-18 | 江苏中天科技股份有限公司 | A kind of high tensile Guidance optical cable |
| CN110423367A (en) * | 2019-08-14 | 2019-11-08 | 哈尔滨工业大学 | A kind of preparation method of fibre reinforced thermoplastic composite |
| CN113655578A (en) * | 2021-08-19 | 2021-11-16 | 中天科技光纤有限公司 | High-temperature-resistant optical fiber and preparation method thereof |
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- 2022-06-15 CN CN202210672543.2A patent/CN115124263A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257422A (en) * | 2013-05-20 | 2013-08-21 | 江苏南方通信科技有限公司 | Novel guide optical fiber |
| CN109239880A (en) * | 2018-12-07 | 2019-01-18 | 江苏中天科技股份有限公司 | A kind of high tensile Guidance optical cable |
| CN110423367A (en) * | 2019-08-14 | 2019-11-08 | 哈尔滨工业大学 | A kind of preparation method of fibre reinforced thermoplastic composite |
| CN113655578A (en) * | 2021-08-19 | 2021-11-16 | 中天科技光纤有限公司 | High-temperature-resistant optical fiber and preparation method thereof |
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