Pressurized curing device and method

Abstract

The invention relates to a pressurized curing device and method.The pressurized curing device comprises a first hollow cylinder structure and a second hollow cylinder structure which are connected with each other, and the second cylinder structure is arranged in the first cylinder structure; a through hole is formed in the bottom of the second cylinder structure, a clamping groove is formed by the bottom of the second cylinder structure and the bottom of the first cylinder structure, a micropore fixing plate is arranged on the clamping groove in a clamping mode, and the micropore fixing plate is provided with a plurality of micropores. According to the invention, the curing process between the wave shift optical fiber and the microporous plate is carried out by applying the positive pressure, so that the curing structural strength of the microporous fixing plate is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of micro-hole fixed plate wave-shift optical fiber curing, and in particular relates to a pressurized curing device and method. Background Art

[0002] The space high-energy cosmic radiation detection facility aims to achieve indirect observation of dark matter and direct measurement of cosmic rays. With its five-sided sensitivity, large longitudinal depth and advanced characteristics of the fully absorbing three-dimensional calorimeter, the facility has become an internationally leading dark matter detection tool. The ICMOS (fiber light cone coupled CMOS and photomultiplier tube or image intensifier) ​​system plays a key role in signal readout in the cosmic radiation detection facility. It consists of four main parts: image intensifier, front-stage light cone, back-stage light cone and CMOS camera. In this system, the front-stage light cone is coupled with the wave-shifted fiber and the cathode of the image intensifier, requiring independent signal transmission to reduce the crosstalk rate and ensure signal clarity. In order to ensure the energy resolution and dynamic range of the calorimeter, the light transmission non-uniformity of the front-stage light cone must meet high standards. In addition, considering the possible impact of cosmic rays on optical performance during on-orbit operation, the optical performance of the front-stage and back-stage light cones, including crosstalk rate, transmittance and light transmission uniformity, needs to be strictly tested and controlled. In order to ensure that the optical performance of the space high-energy cosmic radiation detection facility does not degrade significantly during its 10-year operation in orbit, strict control of the optical performance of the front-end and rear-end light cones is essential. This will ensure the detection efficiency and accuracy of the calorimeter, thereby providing reliable data support for the detection of dark matter and the study of cosmic rays.

[0003] Wave-shifted fiber plays a vital role in high-energy physics experiments. It is responsible for absorbing the light signal emitted by the crystal scintillator and guiding it to the outside of the calorimeter after converting its wavelength. This process is realized by WLSF (wave-shifted fiber), and is finally read out by the ICMOS system to complete the photoelectric conversion of the signal. The image intensifier plays a core role in this process. It not only converts the photons output by the wavelength-shifted fiber into photoelectricity, but also enhances the light signal through acceleration and multiplication mechanisms to stimulate fluorescence output. This function is crucial for the transmission of delayed photons and ensures the integrity and accuracy of the signal. In order to ensure seamless docking between the wave-shifted fiber and the microporous fixing plate, the method of inserting the curing glue into the microporous fixing plate is adopted to achieve a gapless and tight structure. In the traditional curing process, the wave-shifted fiber is inserted into the microporous plate using a single-component photosensitive glue using the capillary effect principle. There are problems such as bubbles and insufficient curing strength in the curing glue. At the same time, due to the small capillary force, it is difficult to introduce high-viscosity curing glue into the microporous interior, that is, it is impossible to meet the use of high-viscosity curing glue. These problems seriously affect the coupling efficiency of the ICMOS system. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a pressurized curing device and method, and the technical problem to be solved is to carry out the curing process between the waveshift optical fiber and the microporous plate by applying positive pressure to improve the curing structural strength of the microporous fixing plate.

[0005] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. A pressurized curing device proposed in the present invention comprises a first hollow cylindrical structure and a second cylindrical structure connected to each other, wherein the second cylindrical structure is arranged in the first cylindrical structure, a through hole is opened at the bottom of the second cylindrical structure and forms a slot with the bottom of the first cylindrical structure, a microporous fixing plate is arranged on the slot, and the microporous fixing plate has a plurality of micropores.

[0006] Preferably, in the aforementioned pressurized curing device, the microporous fixing plate matches the optical fiber diameter of the preceding light cone.

[0007] Preferably, in the aforementioned pressurized curing device, the second cylindrical structure is provided with an annular outer edge, and the second cylindrical structure is connected to the first cylindrical structure via the annular outer edge.

[0008] Preferably, in the aforementioned pressurized curing device, one end of the annular outer edge has a glue injection hole, and the glue injection hole is filled with curing glue.

[0009] Preferably, in the aforementioned pressurized curing device, a first rubber ring is provided on the glue injection hole, a first sealing cover is provided on the first rubber ring, and the curing glue and the first sealing cover are not in contact.

[0010] Preferably, in the aforementioned pressurized curing device, both ends of the outer wall of the first cylindrical structure have air inlet holes.

[0011] Preferably, in the aforementioned pressurized curing device, a through hole is opened at the bottom of the second cylindrical structure and forms a slot with the bottom of the first cylindrical structure, and a microporous fixing plate is clamped on the slot.

[0012] Preferably, in the aforementioned pressurized curing device, a second sealing cover is provided on the microporous fixing plate, and a second sealing ring is provided between the microporous fixing plate and the second sealing cover.

[0013] Preferably, in the aforementioned pressurized curing device, wave-shift optical fibers are inserted into the plurality of microholes of the microhole fixing plate one by one.

[0014] The purpose of the present invention and the technical problem to be solved can also be achieved by adopting the following technical solutions. A pressurized curing method proposed in the present invention comprises the following steps:

[0015] The curing glue is injected, and after sealing, nitrogen is introduced until the curing glue overflows to the upper end of the microporous fixing plate. Then, the microporous fixing plate is irradiated with ultraviolet light from bottom to top under a fixed air pressure. After the curing is completed, the microporous fixing plate is taken out.

[0016] Preferably, in the aforementioned pressurized curing method, the liquid level of the curing adhesive is flush with the upper end height of the microporous fixing plate.

[0017] Preferably, in the aforementioned pressurized curing method, the curing adhesive is tightly filled in each gap between the waveshift optical fiber and the plurality of microholes.

[0018] By means of the above technical solution, the microporous fixed plate curing device and method proposed in the present invention have at least the following beneficial effects:

[0019] The pressurized curing device and method provided by the present invention can significantly improve the bonding strength and curing quality between the microporous fixing plate and the waveshift optical fiber;

[0020] The pressurized curing device and method provided by the present invention are dedicated to eliminating bubbles generated during the curing process by finely optimizing the curing device structure and improving the curing process, thereby ensuring that the wave-shifted optical fiber can maintain a high-strength structure and be uniformly inserted into the microhole;

[0021] The pressurized curing device and method provided by the present invention can effectively remove all bubbles in the curing glue during the curing process by applying precise pressurization control, thereby improving the strength of the curing glue between the waveshift optical fiber and the micropore.

[0022] The pressurized curing device and method provided by the present invention performs the curing process between the waveshift optical fiber and the microporous plate by applying positive pressure. This design is intended to eliminate bubbles in the curing glue and improve the curing strength. This pressurized curing method will not be affected by the curing viscosity, and curing glue with any viscosity parameters can be used to meet the use of different microporous fixing plates.

[0023] The pressurized curing device and method provided by the present invention can improve the strength of the curing structure of the microporous fixing plate, maintain the stability of the ICMOS system connection of the front and rear light cones during 10 years of on-orbit operation, thereby ensuring the overall detection efficiency and accuracy of the calorimeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the microporous fixing plate of the present invention;

[0025] Figure 2 This is one of the structural schematic diagrams of the pressurized curing device of the present invention;

[0026] Figure 3 This is the second structural schematic diagram of the pressurized curing device of the present invention.

[0027] 1-micropore fixing plate, 2-first sealing cover, 3-first rubber ring, 4-glue injection hole, 5-air inlet, 6-wave shift optical fiber, 7-second sealing cover, 8-second sealing ring; 9-threaded hole; 10-card slot; 11-micropore; 12-first cylinder; 13-second cylinder; 14-annular outer edge; 15-curing glue. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation, features and effects of a pressurized curing device and method proposed by the present invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features or characteristics in one or more embodiments may be combined in any suitable form.

[0029] It should be noted that all directional indications in the present invention (such as up, down, left, right, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0030] like Figure 1-Figure 3 As shown, some embodiments of the present invention provide a pressurized curing device for achieving precise coupling between a waveshift optical fiber and a microporous fixing plate, which includes a first hollow cylindrical structure 12 and a second cylindrical structure 13 that are interconnected, wherein the second cylindrical structure 13 is disposed in the first cylindrical structure 12, a through hole is provided at the bottom of the second cylindrical structure 13 and a slot 10 is formed with the bottom of the first cylindrical structure 12, wherein a microporous fixing plate 1 is clamped on the slot 10, and the microporous fixing plate 1 has a plurality of micropores 11. Figure 1 The structure of the microporous fixing plate 1 of the present invention includes two cylindrical structures of different diameters connected to each other, into which the wave shift optical fiber 6 having a diameter close to that of the plurality of microporous holes 11 is inserted, and the microporous fixing plate 1 is highly matched with the optical fiber diameter of the front-stage light cone, ensuring seamless connection between the two. The materials of the first cylindrical structure 12 and the second cylindrical structure 13 can be acrylic, polycarbonate (PC), and MS board, which have high transparency and high strength.

[0031] Figure 2The structure of the boost curing device of the present invention, wherein the second cylindrical structure 13 is provided with an annular outer edge 14, and the second cylindrical structure 13 is connected to the first cylindrical structure 12 through the annular outer edge 14, and this arrangement is to form a passage for the injection hole and the air inlet. The second cylindrical structure 13 forms a passage for filling the curing glue through the cavity between the annular outer edge 14 and the first cylindrical structure 12, and the annular outer edge 14 realizes the splicing between the cylindrical structures. One end of the annular outer edge 14 has a glue injection hole 4, and the glue injection hole 4 is filled with curing glue 15. The curing glue 15 can be selected to use ultraviolet curing glue, which is a light-sensitive adhesive that can be quickly cured under the irradiation of ultraviolet rays or visible light, and is colorless and transparent. This selection can keep the waveshift optical fiber fixed in the microporous plate, increase the strength, and increase the service life. The composition of the UV curing adhesive by mass percentage is (wt%): 34-39% monofunctional active diluent (which can be N-vinyl pyrrolidone), 14-15% multifunctional active diluent (which can be trimethylolpropane triacrylate), 1-6% photoinitiator (which can be benzophenone), 42-43% photosensitive resin (which can be acrylic epoxy resin), 1-2% photosensitizer (which can be triethylamine). The active diluent participates in the formation of a cross-linked body structure to enhance the bonding performance of the adhesive. When the amount of diluent added is too large, the curing time is short, resulting in a decrease in bonding strength. The photoinitiator absorbs ultraviolet light and initiates polymerization. The active diluent determines the viscosity of the curing adhesive and participates in the curing reaction, affecting the performance of the cured film. The photosensitive resin can shorten the curing time, quickly bond, and has good mechanical properties, chemical stability and weather resistance. A first rubber ring 3 is provided on the injection hole 4, and a first sealing cover 2 is provided on the first rubber ring 3. By designing a glue injection hole 4 at one end of the annular outer edge 14, and applying a first sealing cover 2 and a first rubber ring 3, its air tightness can be improved. In order to facilitate tooling, the outer wall of the first cylindrical structure 12 has air inlet holes 5 at both ends; the bottom of the second cylindrical structure 13 is provided with a through hole and forms a card slot 10 with the bottom of the first cylindrical structure 12, and the card slot 10 is provided with a microporous fixing plate 1. This arrangement is convenient for applying positive gas pressure, increasing the driving force of the curing glue, and tightly filling the gap between the waveshift optical fiber and the micropore. The microporous fixing plate 1 is covered with a second sealing cover 7, and a second sealing ring 8 is provided between the microporous fixing plate 1 and the second sealing cover 7; the second sealing cover 7 has four threaded holes 9 around it, and the threaded holes 9 are provided with screws matching therewith. The microporous fixing plate 1 is fixedly arranged in the card slot 10, and the microporous fixing plate 1 is fixed by the sealing cover 7, and its lower end is further sealed by the rubber ring 8 to achieve a high-efficiency sealing effect, and the sealing cover 7 is fixed by tightening screws through the four threaded holes 9. Wave shifting optical fibers 6 are inserted into the plurality of microholes 11 of the microhole fixing plate 1 one by one.The wave-shift fiber is responsible for absorbing the optical signal, and then the image intensifier completes the photoelectric conversion of the optical signal output by the wave-shift fiber. Therefore, the wave-shift fiber needs to be inserted into a micro-hole fixing plate that matches the diameter of the wave-shift fiber to complete the fixation before the optical signal can be accurately transmitted. By inserting the wave-shift fiber 6 into the micro-holes 11 in the micro-hole fixing plate 1 one by one, the signal light is transmitted to the previous light cone structure through the wave-shift fiber 6.

[0032] The tight connection between the wave-shifted optical fiber and the micro-hole fixing plate is the key to ensuring high curing strength. However, the traditional method relies on the capillary force effect of the curing glue to achieve a tight connection between the optical fiber and the micro-hole 11, which often faces challenges due to the fine gap and insufficient penetration of the curing glue. Specifically, the curing glue fails to fully fill the gap and may retain bubbles, thereby weakening the curing strength.

[0033] To this end, some embodiments of the present invention provide a pressurized curing method, which abandons the traditional bottom-up capillary force injection method and instead adopts a more efficient and controllable glue injection and pressurization combination technology, such as Figure 3 As shown, including:

[0034] First, place the sealing ring 8 in the slot 10 of the microporous fixing plate 1, then place the microporous fixing plate 1 in the slot 10, place the second sealing cover 7 on the upper end of the microporous fixing plate 1, and screw the four threaded holes 9 around the second sealing cover 7 to further improve the stability and air tightness of the microporous fixing plate. Select a curing glue with a viscosity of 500-800cp. When the viscosity is less than 500cp, the curing glue viscosity is too low, which will make the curing strength of the waveshift optical fiber insufficient; when the viscosity is greater than 800cp, the viscosity is too high, and the air pressure is insufficient to allow the curing glue to enter the micropores. In order to eliminate the bubbles in the curing glue 15 itself before injection, the curing glue 15 needs to be degassed by rotating and revolving. The injection hole 4 of the above-mentioned pressurized curing device is injected by using a dispensing machine to accurately control the injection amount. The injection amount range is set to 20-30ml. When it is less than 20ml and the injection amount is too little, it cannot completely enter the micropore, resulting in insufficient curing strength of the waveshift optical fiber. When it is greater than 30ml and the injection amount is too much, the curing glue will enter the position of the air inlet, making it difficult to insert the vent pipe, affecting the gas supply at the air inlet. Ensure that the curing glue 15 can be initially filled into the micropore fixing plate area until the liquid level of the curing glue 15 is flush with the upper end height of the micropore fixing plate 1, stop the injection, and then place the first rubber ring 3 at the position of the injection hole 4 and apply the first sealing cover 2 for sealing. Subsequently, gas is introduced into both sides of the pressurized curing device, the gas joints are tightened at the positions of the air inlet holes 5 at both ends of the curing device, and then the vent pipe is connected to introduce N2 in the range of 0.2 to 0.5 NL / min to apply gas pressure. When the gas flow rate is less than 0.2 NL / min, it is too small to allow the curing glue to enter the microporous plate; when the gas flow rate is greater than 0.5 NL / min, it is too large, causing the curing glue to enter the surface of the microporous plate too quickly, resulting in the curing glue all around the surface of the microporous plate, which affects the smooth removal of the microporous plate. Until the curing glue 15 overflows the upper surface of the microporous fixing plate 1, in order to avoid the curing glue 15 contacting and adhering to the sealing cover 7 at the upper end of the microporous fixing plate 1, it is difficult to remove the microporous fixing plate afterwards. During the operation, the curing glue 15 and the sealing cover 7 need to be kept out of contact, and then the gas valve is tightened to control the air pressure at this time. This innovative step significantly enhances the driving force of the curing glue 15, enabling it to overcome the resistance of the small gap, fully penetrate and tightly fill every gap between the waveshift optical fiber 6 and the micropore 11. In this process, the positive pressure not only promotes the overall diffusion of the curing adhesive 15, but also plays an effective role in removing bubbles. Through the continuous pressure, the possible tiny bubbles are discharged one by one, thereby avoiding the adverse effects of bubbles on the curing quality. Afterwards, the acrylic plate at the bottom of the curing device is irradiated from bottom to top with an ultraviolet lamp, once every 5-20 seconds, and each time for 5-20 seconds. The longer the interval time, the longer the ultraviolet lamp will emit heat, causing the wave shift optical fiber to be easily damaged by heat, affecting the transmission of light.The irradiation is finished after 10-20 minutes. The longer the irradiation time, the more heat the ultraviolet lamp will emit, which will cause the wave-shifted optical fiber to be easily damaged by heat and affect the transmission of light. In order to achieve the purpose of curing the curing glue 15. Then unscrew the screw, take out the sealing cover, cut off the lower end of the microporous fixing plate 1 and then polish it. The polishing time is set to 2.5-3h. Since the wave-shifted optical fiber made of plastic is softer than the microporous fixing plate made of glass, when it is more than 3h, polishing for too long will cause the wave-shifted optical fiber to be polished more than the surface of the microporous plate, and pits will appear on the surface of the microporous plate; when it is less than 2.5h, the polishing time is too short, making the surface of the microporous plate rough. Finally, the microporous fixing plate 1 can be removed smoothly, and the curing process of the wave-shifted optical fiber 6 and the microporous fixing plate 1 is completed. Finally, the wave-shifted optical fiber 6 and the micropore 11 are seamlessly combined without bubbles.

[0035] The present invention will be further described below in conjunction with specific embodiments, but this should not be construed as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made to the present invention by technicians in this field based on the above-mentioned contents of the present invention still fall within the scope of protection of the present invention.

[0036] The wave-shifted optical fiber 6 involved in Examples 1-8 and Comparative Examples 1-2 is a wavelength-shifted plastic optical fiber.

[0037] Example 1

[0038] The proportion (wt%) of each component of the curing glue is shown in Table 1. A dispensing machine is used to inject curing glue with a viscosity of 450cp into the injection hole of the above-mentioned boost curing device. 0.3NL / min of N2 is introduced into the air inlets at both ends of the above-mentioned boost curing device through the ventilation pipe until the curing glue overflows to the upper surface position of the microporous fixing plate 1. Then, under a fixed air flow rate, an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm is used to irradiate the microporous fixing plate 1 from bottom to top for 12 minutes, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, and it is observed that no bubbles are generated. The test shows that its curing strength is 8Mpa. The light transmission transmittance of the waveshift optical fiber 6 at a wavelength of 532nm is 79%.

[0039] Example 2

[0040] The proportion (wt%) of each component of the curing glue is shown in Table 1. A dispensing machine is used to inject curing glue with a viscosity of 600cp into the injection hole of the above-mentioned boost curing device. After sealing, 0.3NL / min of N2 is introduced into the air inlets at both ends of the boost curing device through the ventilation pipe until the curing glue overflows to the upper surface of the microporous fixing plate 1. Then, the microporous fixing plate 1 is irradiated from bottom to top with an ultraviolet lamp under a fixed air flow rate for 10 minutes, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, and it is observed that no bubbles are generated. The test shows that its curing strength is 9Mpa. The light transmission rate of the waveshift optical fiber 6 at a wavelength of 532nm is 80%.

[0041] Example 3

[0042] The proportion (wt%) of each component of the curing glue is shown in Table 1. A dispensing machine is used to inject curing glue with a viscosity of 700cp into the injection hole of the above-mentioned boost curing device. After sealing, 0.3NL / min of N2 is introduced into the air inlets at both ends of the boost curing device through the ventilation pipe until the curing glue overflows to the upper surface of the microporous fixing plate 1. Then, under a fixed air flow rate, an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm is used to irradiate the microporous fixing plate 1 from bottom to top for 9 minutes, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, and it is observed that no bubbles are generated. The test shows that its curing strength is 10Mpa. The light transmission rate of the waveshift optical fiber 6 at a wavelength of 532nm is 78%.

[0043] Comparative Example 1

[0044] The proportion (wt%) of each component of the curing glue is shown in Table 1. A dispensing machine is used to inject curing glue with a viscosity of 900cp into the injection hole of the above-mentioned boost curing device. After sealing, 0.3NL / min of N2 is introduced into the air inlet at both ends of the boost curing device through the ventilation pipe. It is difficult for N2 to push the curing glue into the micropores 11 of the micropore fixing plate 1, and the curing of the waveshift optical fiber 6 fails.

[0045] The compositions and performance parameters of the UV curing adhesives of Examples 1-3 and Comparative Example 1 are summarized in Table 1 and Table 2. The curing strength is measured according to GB / T 7124-2008.

[0046] Table 1

[0047] Composition of UV curing adhesive Example 1 Example 2 Example 3 Comparative Example 1 N-vinylpyrrolidone (wt%) 39 37 35 33 Benzophenone (wt%) 1 3 5 7 Trimethylolpropane triacrylate (wt%) 15 15 15 15 Acrylic epoxy resin (wt%) 43 43 43 43 Triethylamine (wt%) 2 2 2 2 Total (wt%) 100 100 100 100

[0048] Table 2

[0049]

[0050]

[0051] From the data in Table 1 and Table 2, it can be seen that gradually reducing the mass percentage of the active diluent (N-vinylpyrrolidone), the viscosity of the curing glue increases, the mass percentage of the photoinitiator (benzophenone) increases, the polymerization effect is enhanced, and the radiation resistance time needs to be reduced. When the viscosity of the curing glue is too low, the curing strength of the waveshift optical fiber is insufficient. When the viscosity of the curing glue gradually increases, the curing strength increases. When the viscosity is too high, the air pressure is not enough to push the curing glue into the interior of the micropore 11, resulting in incomplete curing of the waveshift optical fiber. The change in the viscosity of the curing glue has little effect on the transmittance of the waveshift optical fiber 6.

[0052] Example 4

[0053] The proportion (wt%) of each component of the curing glue is shown in Table 3. A dispensing machine is used to inject curing glue with a viscosity of 600cp into the injection hole of the above-mentioned boost curing device. 0.1NL / min of N2 is introduced into the air inlets at both ends of the above-mentioned boost curing device through the ventilation pipe until the curing glue overflows to the upper surface of the microporous fixing plate. Then, the microporous fixing plate is irradiated from bottom to top for 10 minutes with an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm under a fixed air flow rate, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, but it is found that the curing glue has not completely entered the interior of the micropore 11, and some bubbles are generated. The test shows that its curing strength is 6Mpa, and the light transmission rate of the waveshift optical fiber 6 at a wavelength of 532nm is 50%.

[0054] Example 5

[0055] The proportion (wt%) of each component of the curing glue is shown in Table 3. A dispensing machine is used to inject curing glue with a viscosity of 600cp into the injection hole of the above-mentioned boost curing device. 0.3NL / min of N2 is introduced into the air inlets at both ends of the above-mentioned boost curing device through the ventilation pipe until the curing glue overflows to the upper surface position of the microporous fixing plate 1. Then, under a fixed air flow rate, an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm is used to irradiate the microporous fixing plate 1 from bottom to top for 10 minutes, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, and it is observed that no bubbles are generated. The test shows that its curing strength is 10Mpa. The light transmission transmittance of the waveshift optical fiber 6 at a wavelength of 532nm is 79%.

[0056] Comparative Example 2

[0057] The proportion (wt%) of each component of the curing glue is shown in Table 3. A dispensing machine is used to inject curing glue with a viscosity of 600cp into the injection hole of the above-mentioned boost curing device. 0.7NL / min of N2 is introduced into the air inlets at both ends of the above-mentioned boost curing device through the ventilation pipe until the curing glue overflows to the upper surface position of the microporous fixing plate. Then, under a fixed air flow rate, an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm is used to irradiate the microporous fixing plate 1 from bottom to top for 10 minutes, once every 5s, and each time for 5s. After the curing is completed, when the microporous fixing plate 1 is taken out, most of the curing glue overflows from the surface, and the removal process is very difficult. In addition, the microporous fixing plate contains a large number of bubbles and a large number of gaps at the bottom, which are not filled with curing glue, and the curing of the waveshift optical fiber 6 fails.

[0058] The compositions and performance parameters of the UV curing adhesives of Examples 4-5 and Comparative Example 2 are summarized in Table 3 and Table 4. The curing strength is measured according to GB / T 7124-2008.

[0059] Table 3

[0060]

[0061] Table 4

[0062]

[0063] It can be seen from the data in Table 3 and Table 4 that if the air flow rate is too small, the curing glue is not enough to enter the microporous plate, and if the air flow rate is too large, the curing glue enters the surface of the microporous plate too quickly, resulting in curing glue all around the surface of the microporous plate, which affects the smooth removal of the microporous plate. Therefore, if the air flow rate is too high or too low, it will affect the curing strength of the waveshift optical fiber 6, and also directly affect the transmittance of the waveshift optical fiber.

[0064] Example 6

[0065] The proportion (wt%) of each component of the curing glue is shown in Table 5. A dispensing machine is used to inject curing glue with a viscosity of 600cp into the injection hole of the above-mentioned boost curing device. 0.3NL / min of N2 is introduced into the air inlets at both ends of the above-mentioned boost curing device through the ventilation pipe until the curing glue overflows to the upper surface position of the microporous fixing plate 1. Then, under a fixed air flow rate, an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm is used to irradiate the microporous fixing plate 1 from bottom to top for 8min, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, and it is observed that no bubbles are generated. The test shows that its curing strength is 6Mpa. The light transmission transmittance of the waveshift optical fiber 6 at a wavelength of 532nm is 80%.

[0066] Example 7

[0067] The proportion (wt%) of each component of the curing glue is shown in Table 5. A dispensing machine is used to inject curing glue with a viscosity of 600cp into the injection hole of the above-mentioned boost curing device. 0.3NL / min of N2 is introduced into the air inlets at both ends of the above-mentioned boost curing device through the ventilation pipe until the curing glue overflows to the upper surface position of the microporous fixing plate 1. Then, under a fixed air flow rate, an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm is used to irradiate the microporous fixing plate 1 from bottom to top for 15min, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, and it is observed that no bubbles are generated. The test shows that its curing strength is 8Mpa. The light transmission rate of the waveshift optical fiber 6 at a wavelength of 532nm is 76%.

[0068] Example 8

[0069] The proportion (wt%) of each component of the curing glue is shown in Table 5. A dispensing machine is used to inject curing glue with a viscosity of 600cp into the injection hole of the above-mentioned boost curing device. 0.3NL / min of N2 is introduced into the air inlets at both ends of the above-mentioned boost curing device through the ventilation pipe until the curing glue overflows to the upper surface position of the microporous fixing plate 1. Then, under a fixed air flow rate, an ultraviolet lamp with an optical power of 3W and a wavelength of 395nm is used to irradiate the microporous fixing plate 1 from bottom to top for 22 minutes, once every 5s, and each time for 5s. After the curing is completed, the microporous fixing plate 1 is taken out, and it is observed that no bubbles are generated. The test shows that its curing strength is 10Mpa. The light transmission rate of the waveshift optical fiber 6 at a wavelength of 532nm is 60%.

[0070] The composition and performance parameters of the UV curing adhesives of Examples 6-8 are summarized in Table 5 and Table 6. The curing strength is measured according to GB / T 7124-2008.

[0071] Table 5

[0072]

[0073] Table 6

[0074]

[0075] From the data in Table 5 and Table 6, it can be seen that the longer the irradiation time, the higher the curing intensity. However, long-term irradiation of the ultraviolet lamp will emit heat, causing the wave-shifted optical fiber to be easily damaged by heat, thus affecting the transmission of light.

[0076] In the specification of the present invention, a lot of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some embodiments, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0077] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0078] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

[0079] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A pressurized curing device, characterized in that: It includes a first hollow cylindrical structure and a second cylindrical structure which are interconnected. The second cylindrical structure is arranged in the first cylindrical structure. A through hole is opened at the bottom of the second cylindrical structure and forms a slot with the bottom of the first cylindrical structure. A microporous fixing plate is fixed on the slot, and the microporous fixing plate has a plurality of micropores.

2. The pressurized curing device according to claim 1, characterized in that: The micro-hole fixing plate matches the optical fiber diameter of the front-stage light cone.

3. The pressurized curing device according to claim 1, characterized in that: The second cylindrical structure is provided with an annular outer edge, and the second cylindrical structure is connected to the first cylindrical structure via the annular outer edge.

4. The pressurized curing device according to claim 3, characterized in that: One end of the annular outer edge is provided with a glue injection hole, and the glue injection hole is filled with curing glue.

5. The pressurized curing device according to claim 1, characterized in that: The glue injection hole is provided with a first rubber ring, the first rubber ring is provided with a first sealing cover, and the curing glue is not in contact with the first sealing cover.

6. The pressurized curing device according to claim 1, characterized in that: Both ends of the outer wall of the first cylindrical structure are provided with air inlet holes.

7. The pressurized curing device according to claim 1, characterized in that: A through hole is provided at the bottom of the second cylindrical structure and forms a slot with the bottom of the first cylindrical structure. A microporous fixing plate is fixed on the slot.

8. The pressurized curing device according to claim 1, characterized in that: The microporous fixing plate is covered with a second sealing cover, and a second sealing ring is arranged between the microporous fixing plate and the second sealing cover.

9. The pressurized curing device according to claim 1, characterized in that: Wave shifting optical fibers are inserted into the plurality of microholes of the microhole fixing plate one by one.

10. A pressurized curing method, characterized in that: The following steps are involved: The curing glue is injected, and after sealing, nitrogen is introduced until the curing glue overflows to the upper end of the microporous fixing plate. Then, the microporous fixing plate is irradiated with ultraviolet light from bottom to top under a fixed air pressure. After the curing is completed, the microporous fixing plate is taken out.

11. The pressurized curing method according to claim 10, characterized in that: The liquid surface of the curing glue is flush with the upper end height of the microporous fixing plate.

12. The pressurized curing method according to claim 10, characterized in that: The curing glue is tightly filled in each gap between the wave-shifting optical fiber and the plurality of micro-holes.

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