WO2024109833A1 - Procédé de préparation de fibre optique flexible - Google Patents

Procédé de préparation de fibre optique flexible Download PDF

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Publication number
WO2024109833A1
WO2024109833A1 PCT/CN2023/133421 CN2023133421W WO2024109833A1 WO 2024109833 A1 WO2024109833 A1 WO 2024109833A1 CN 2023133421 W CN2023133421 W CN 2023133421W WO 2024109833 A1 WO2024109833 A1 WO 2024109833A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
flexible optical
teflon tube
raw material
preparing
Prior art date
Application number
PCT/CN2023/133421
Other languages
English (en)
Chinese (zh)
Inventor
蒋路遥
曹燚
钟成
鲁艺
孙重阳
陈亚鑫
曹慕凡
吴歌
Original Assignee
中国科学院深圳先进技术研究院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国科学院深圳先进技术研究院 filed Critical 中国科学院深圳先进技术研究院
Publication of WO2024109833A1 publication Critical patent/WO2024109833A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/04—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles using movable moulds not applied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/36—Removing moulded articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Definitions

  • the present application relates to the field of flexible optical fiber preparation, and in particular to a method for preparing a flexible optical fiber.
  • the existing flexible optical fiber preparation methods mainly include stretching and high-temperature curing methods.
  • this method requires special heating equipment and the thickness of the optical fibers produced is not uniform enough.
  • the prior art has the problem that the preparation process of flexible optical fibers is complicated and the product quality is poor.
  • the main purpose of the present application is to provide a method for preparing a flexible optical fiber, aiming to solve the technical problems in the prior art that the preparation process of the flexible optical fiber is complicated and the product quality is poor.
  • the present application provides a method for preparing a flexible optical fiber, comprising the following steps:
  • the method for preparing the flexible optical fiber comprises the following steps:
  • the raw materials are injected into the Teflon tube by an injection device;
  • the Teflon tube is peeled off to obtain the prepared flexible optical fiber.
  • the Teflon tube has a wall thickness of less than 100 microns.
  • the injection port of the injection device is inserted into one end connected to the Teflon tube.
  • the raw material is in liquid or colloidal state.
  • the step of injecting the raw material into the Teflon tube by an injection device comprises:
  • the other end of the Teflon tube connected to the injection device is vertically extended into the interior of the containing container until the other end of the Teflon tube contacts the liquid raw material;
  • the liquid raw material in the containing container is sucked into the Teflon tube through the injection device.
  • the step of injecting the raw material into the Teflon tube by an injection device comprises:
  • the colloidal raw material in the injection tube is squeezed into the Teflon tube through the injection port by the injection device.
  • the method further comprises:
  • the injection tube filled with the colloidal raw material is left to stand for 20-24 hours.
  • the insertion depth of the insertion connection is 5-10 mm.
  • the interface between the Teflon tube and the injection port is bonded with AB glue.
  • the method further comprises:
  • the Teflon tube containing the raw materials is placed in an oven and heated at 80-100 degrees Celsius for 20-40 minutes.
  • the present application proposes a method for preparing a flexible optical fiber.
  • the present application injects the raw material into a Teflon tube through an injection device; after the raw material is cured and formed, the Teflon tube is peeled off to obtain a prepared flexible optical fiber.
  • the Teflon tube has anti-stickiness and a low friction coefficient
  • a smooth and uniform flexible optical fiber can be prepared by using the Teflon tube as a mold to shape the raw material.
  • the raw material is injected into the Teflon tube through an injection device, and after the raw material is cured and formed, the Teflon tube is peeled off.
  • the preparation tools used are relatively simple, and the preparation process is also simple. The preparation process of the flexible optical fiber is simplified and the product quality is improved.
  • FIG1 is a schematic flow chart of a first embodiment of a method for preparing a flexible optical fiber of the present application
  • FIG2 is a schematic diagram of demoulding a cured flexible optical fiber according to the first embodiment of the method for preparing a flexible optical fiber of the present application;
  • FIG3 is a schematic diagram of injecting liquid raw materials into a mold according to the second embodiment of the method for preparing a flexible optical fiber of the present application;
  • FIG. 4 is a schematic diagram of injecting colloidal raw materials into a mold according to the second embodiment of the method for preparing a flexible optical fiber of the present application.
  • FIG. 1 is a schematic flow chart of a first embodiment of the method for preparing a flexible optical fiber of the present application.
  • the method for preparing the flexible optical fiber includes:
  • Step S10 injecting the raw material into the Teflon tube through the injection device
  • Optogenetic regulation technology refers to a technology that combines optical and genetic means to control specific neurons. This technology expresses photosensitive ion channel proteins on the cell membrane of specific neurons through gene editing, allowing neurons to respond to external light stimulation. Then, by applying light stimulation of a certain wavelength, the activation and inhibition of specific neurons can be precisely controlled.
  • Optical fiber is a carrier for transmitting light, and it needs to be implanted in optogenetics.
  • the elastic modulus of existing commercial optical fiber (2.2-7.2Gpa) is much larger than that of nerves and perineurial tissue (0.1-20Kpa).
  • the mismatch of elastic modulus means that existing commercial optical fiber will not deform with the tissue.
  • stress concentration effect occurs on the interface of implanted perineurial tissue, causing serious damage to the perineurial tissue on the interface, inducing inflammation, necrosis, effusion, etc. of the tissue, which may lead to the death of experimental animals.
  • the existing flexible optical fiber preparation methods mainly include stretching high-temperature curing method and mold forming method.
  • the stretching high-temperature curing method requires special heating equipment, and the thickness of the optical fiber made by stretching is not uniform enough.
  • the mold forming method uses molds such as glass microtubes, which leads to some special flexible optical fiber materials, such as PDMS (Polydimethylsiloxane), which often adheres tightly to the mold after curing, and there is a problem of difficulty in demolding.
  • PDMS Polydimethylsiloxane
  • a Teflon tube is selected as a mold to prepare a flexible optical fiber based on the traditional mold forming method.
  • the good anti-stickiness of the Teflon tube itself is utilized to prevent liquid or colloidal chemicals from adhering to the inner wall of the Teflon tube.
  • the Teflon tube itself has a low friction coefficient, which is generally 0.04. It is a good self-lubricating material, and the friction coefficient does not change with temperature.
  • the injection device may be a syringe or an injection pump, etc., which is not specifically limited.
  • the syringe is composed of an injection tube, a piston and an injection port.
  • the syringe is a needle tube.
  • the injection port of the injection device is inserted into one end connected to the Teflon tube.
  • the Teflon tube by inserting one end of the Teflon tube into the injection port connected to the injection device, it is possible to avoid injecting air into the Teflon tube during the injection process, reduce bubbles inside the flexible optical fiber, and improve the transmission efficiency of the flexible optical fiber.
  • the inner diameter of the injection port of the injection device matches the outer diameter of the Teflon tube.
  • the outer diameter of the Teflon tube may be slightly smaller than the inner diameter of the injection port of the injection device, so that the Teflon tube can be inserted into the injection port of the injection device without loosening.
  • the insertion depth of the insertion connection is 5-10 mm.
  • the Teflon tube can be prevented from detaching from the injection port and act as a seal, thereby avoiding air from being injected into the Teflon tube during the injection process, reducing bubbles inside the flexible optical fiber, and improving the transmission efficiency of the flexible optical fiber.
  • the interface between the Teflon tube and the injection port is bonded with AB glue.
  • one end of the Teflon tube is inserted into the connection (interface) of the injection port of the injection device and bonded with AB glue (two-liquid mixed hardening glue), which can provide a better sealing effect, avoid air from being injected into the Teflon tube during the injection process, reduce bubbles inside the flexible optical fiber, and improve the transmission efficiency of the flexible optical fiber.
  • AB glue two-liquid mixed hardening glue
  • Step S20 After the raw material is solidified and formed, the Teflon tube is peeled off to obtain a prepared flexible optical fiber.
  • the raw materials in the Teflon tube may be allowed to solidify naturally, or the Teflon tube may be heated to accelerate the solidification of the raw materials inside.
  • the method before the step of peeling off the Teflon tube after the raw material is solidified and formed to obtain the prepared flexible optical fiber, the method further includes:
  • Step S30 placing the Teflon tube containing the raw materials into an oven and heating it at 80-100 degrees Celsius for 20-40 minutes.
  • the raw material for preparing the flexible optical fiber may be silicone rubber.
  • the silicone rubber is PDMS.
  • the Teflon tube containing PDMS is placed in an oven, heated at 90 degrees Celsius for 30 minutes, heated at 100 degrees Celsius for 20 minutes, and heated at 800 degrees Celsius for 40 minutes.
  • the above-mentioned heating process can accelerate the solidification and forming of the raw materials.
  • the wall thickness of the Teflon tube is less than 100 microns.
  • the wall thickness of the Teflon tube used in this embodiment is less than 100 microns, and the wall thickness of the commercially available Teflon tube is about 300 microns. Compared with the commercially available Teflon tube, the Teflon tube used in this embodiment can be directly and easily torn apart to achieve quick and easy mold demolding.
  • the Teflon tube can be directly peeled off using scissors, needle-nosed pliers, pointed tweezers, etc.
  • Figure 2 is a schematic diagram of demolding the cured flexible optical fiber of the first embodiment of the method for preparing a flexible optical fiber of the present application.
  • the stripping method can be to use two pointed tweezers, one of which is used to fix the Teflon tube, and the other is used to tear the entire Teflon tube from one end of the Teflon tube to expose the flexible optical fiber, thereby completing the demolding of the flexible optical fiber.
  • the diameter of the flexible optical fiber that can be produced is between 0.1 and 3 mm.
  • the Teflon tube has anti-stickiness and a low friction coefficient
  • the raw material is injected into the Teflon tube through an injection device, and the Teflon tube is used as a mold to shape the raw material, so that a smooth and uniform flexible optical fiber can be prepared.
  • the Teflon tube can be easily peeled off to complete demolding.
  • the tools used in the entire preparation process are relatively simple, and the preparation process is also very simple.
  • the prepared flexible optical fiber not only has a smooth surface, but also has uniform thickness. There is no problem of demolding difficulty during the preparation process, which improves product quality, simplifies the preparation process of the flexible optical fiber, and improves the preparation efficiency of the flexible optical fiber.
  • the embodiment of the present application further provides a second embodiment based on the first embodiment of the method for preparing a flexible optical fiber.
  • the raw material may be in liquid or colloidal state.
  • the preparation processes for the two raw materials are different, but the same thing is that both use the preparation method of the above embodiment 1, injecting the raw material into the Teflon tube through an injection device; after the raw material is solidified and formed, the Teflon tube is peeled off to obtain the prepared flexible optical fiber.
  • the preparation method for preparing a flexible optical fiber using liquid raw materials is as follows.
  • the step of injecting the raw material into the Teflon tube by the injection device includes:
  • Step A1 Filling the liquid raw material into a container
  • FIG. 3 is a schematic diagram of injecting liquid raw materials into a mold in the second embodiment of the method for preparing a flexible optical fiber of the present application, and filling an appropriate amount of liquid raw materials into a container to complete the raw material preparation stage.
  • the liquid raw material after the liquid raw material is filled into the container, it can be left to stand for 20-24 hours to eliminate bubbles in the liquid raw material in the container.
  • Step A2 vertically extending the other end of the Teflon tube connected to the injection device into the interior of the containing container until the other end of the Teflon tube contacts the liquid raw material;
  • the other end of the Teflon tube connected to the injection device (the end away from the injection port) is vertically extended into the interior of the holding container until the other end of the Teflon tube contacts the liquid raw material, completing the preparation stage for injection.
  • the raw material in contact with the liquid may be the surface of the solution of the raw material that has not passed through the interior of the container, so as to prevent external air from entering the Teflon tube and reduce the generation of bubbles inside the flexible optical fiber.
  • Step A3 The liquid raw material in the container is sucked into the Teflon tube through the injection device.
  • liquid raw materials are not convenient to be injected into the Teflon tube by extrusion, if they are injected into the Teflon tube by extrusion, the other end of the Teflon tube needs to be blocked, which is not conducive to the discharge of bubbles and affects the quality of the flexible optical fiber. Therefore, when using liquid raw materials to prepare flexible optical fibers, a method of sucking the liquid raw materials in the container into the Teflon tube is adopted.
  • the suction speed is relatively better controlled, which can reduce the surface friction and ensure the surface smoothness of the flexible optical fiber.
  • the preparation method for preparing a flexible optical fiber using colloidal raw materials is as follows.
  • the step of injecting the raw material into the Teflon tube by the injection device includes:
  • Step B1 filling the colloidal raw material into the injection tube of the injection device
  • FIG. 4 is a schematic diagram of injecting colloidal raw materials into a mold according to a second embodiment of the method for preparing a flexible optical fiber of the present application, and then filling the raw materials into an injection tube of the injection device to complete the raw materials preparation stage.
  • the capacity of the needle tube is selected according to the volume of raw materials required for the flexible optical fiber to be prepared, and can be 5mL or 10ml, etc., without specific limitation.
  • the method further comprises:
  • Step C1 leaving the injection tube filled with the colloidal raw material to stand for 20-24 hours.
  • the injection tube filled with the colloidal raw material needs to be left to stand for 20-24 hours.
  • the mixture may be left to stand for 24 hours, 22 hours, 20 hours, etc., without limitation.
  • Step B2 using the injection device to squeeze the colloidal raw material in the injection tube into the Teflon tube through the injection port.
  • the colloidal raw material in the injection tube is squeezed into the Teflon tube through the injection port.
  • the squeezing speed can be better controlled, so that the prepared flexible optical fiber is more uniform.
  • the method for preparing the flexible optical fiber is suitable for preparing raw materials that are in liquid or colloidal state at room temperature and are used for preparing flexible optical fibers. And the preparation process is very simple, and the prepared flexible optical fiber is free of bubbles, has a smooth surface and is uniform in thickness. Specifically, by adopting the method of sucking the liquid raw material in the container into the Teflon tube, the suction speed is relatively better controlled, which can reduce the friction on the surface and ensure the surface smoothness of the flexible optical fiber.
  • colloidal raw materials to prepare flexible optical fibers it will be more laborious if it is prepared by suction than by extrusion. Therefore, when using colloidal raw materials to prepare flexible optical fibers, the flexible optical fiber is prepared by extrusion. Compared with the suction method, the squeezing speed can be better controlled, making the prepared flexible optical fiber more uniform.
  • the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.
  • a storage medium such as ROM/RAM, magnetic disk, optical disk
  • a terminal device which can be a mobile phone, computer, server, or network device, etc.

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  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

La présente demande a trait au domaine de la préparation de fibres optiques flexibles et concerne un procédé de préparation d'une fibre optique flexible. Par rapport aux antériorités dans lesquelles un dispositif de chauffage spécial est nécessaire pour un procédé de durcissement à haute température par traction et dans lesquelles l'épaisseur d'une fibre optique préparée n'est pas suffisamment uniforme, le procédé selon la présente demande consiste : à injecter des matières premières dans un tube en Téflon au moyen d'un appareil d'injection ; et, une fois que les matières premières sont durcies et formées, à démouler le contenu du tube en Téflon pour obtenir une fibre optique flexible préparée. Comme le tube en Téflon présente une résistance à la viscosité et un coefficient de frottement relativement faible, le tube en Téflon sert de moule pour mouler les matières premières et une fibre optique flexible, lisse et uniforme peut être préparée ; les matières premières sont injectées dans le tube en Téflon au moyen de l'appareil d'injection et le contenu du tube en Téflon est démoulé une fois les matières premières durcies et formées, de sorte que les outils utilisés dans l'ensemble du processus de préparation sont relativement simples, le processus de préparation est également simple, la fibre optique flexible préparée présente une surface lisse et une épaisseur uniforme, le problème de la difficulté de démoulage ne se produit pas dans le processus de préparation, et la qualité du produit est améliorée.
PCT/CN2023/133421 2022-11-23 2023-11-22 Procédé de préparation de fibre optique flexible WO2024109833A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211480232.2A CN115782003A (zh) 2022-11-23 2022-11-23 柔性光纤的制备方法
CN202211480232.2 2022-11-23

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WO2024109833A1 true WO2024109833A1 (fr) 2024-05-30

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WO (1) WO2024109833A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115782003A (zh) * 2022-11-23 2023-03-14 中国科学院深圳先进技术研究院 柔性光纤的制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838860A (en) * 1993-05-21 1998-11-17 Super Vision International, Inc. Fiber optic light source apparatus and method
EP2309924A2 (fr) * 2008-07-22 2011-04-20 Cornova, Inc. Extrémités de fibre façonnées et leurs procédés de fabrication
CN112213815A (zh) * 2020-09-25 2021-01-12 华南理工大学 柔性力致发光光纤及其制备方法和大应变传感应用装置
CN114895404A (zh) * 2022-05-26 2022-08-12 北京科技大学 一种柔性光波导及其制备方法和应用
CN115782003A (zh) * 2022-11-23 2023-03-14 中国科学院深圳先进技术研究院 柔性光纤的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838860A (en) * 1993-05-21 1998-11-17 Super Vision International, Inc. Fiber optic light source apparatus and method
EP2309924A2 (fr) * 2008-07-22 2011-04-20 Cornova, Inc. Extrémités de fibre façonnées et leurs procédés de fabrication
CN112213815A (zh) * 2020-09-25 2021-01-12 华南理工大学 柔性力致发光光纤及其制备方法和大应变传感应用装置
CN114895404A (zh) * 2022-05-26 2022-08-12 北京科技大学 一种柔性光波导及其制备方法和应用
CN115782003A (zh) * 2022-11-23 2023-03-14 中国科学院深圳先进技术研究院 柔性光纤的制备方法

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