A rare earth light-converting thermal insulation film and its preparation process

Abstract

The present invention discloses a rare earth light-converting thermal insulation film and its preparation process, relating to the field of thermal insulation films. A plurality of glass microbeads are disposed in the first, second, and third thermal insulation films. The glass microbeads in the first thermal insulation film are coated with a rare earth light-converting layer, the glass microbeads in the second thermal insulation film are coated with a heat radiation layer, and the glass microbeads in the third thermal insulation film are coated with a heat blocking layer. This invention integrates heat insulation, radiation, and thermal insulation functions, effectively improving the effective performance and product life of the rare earth light-converting thermal insulation film.

Description

Technical Field

[0001] The present invention relates to the field of thermal insulation films, and in particular to a rare earth light-converting thermal insulation film and a preparation process thereof. Background Art

[0002] Under sunlight, heat continuously accumulates on the surface of irradiated objects, causing their surface temperature to rise continuously. In summer, the rising temperature of buildings causes excessively high ambient and indoor temperatures, increasing the electricity consumption of air conditioning and cooling. According to statistics, in many developed countries, the electricity used for cooling and refrigeration equipment such as sprinklers, air conditioners, refrigerators, and electric fans accounts for over 20% of total annual energy consumption. Global energy scarcity and competition have led governments around the world to attach great importance to energy conservation. As excellent energy-saving building products, building doors, windows, and glass insulation materials are increasingly attracting attention.

[0003] With the rapid development of science, technology, and social production, energy and the environment have become two major issues of increasing concern to society, leading to higher demands for energy conservation and environmental protection. Building window and door glass, sun panels, transparent ceilings, and automotive glass require not only high visible light transparency but also effective thermal insulation. A material that is both transparent and heat-insulating is urgently needed to address this challenge.

[0004] Most existing thermal insulation films adopt a composite structure of PET explosion-proof layer, thermal insulation layer and UC anti-scratch layer. The thermal insulation layer is prepared by evenly distributing precious metals (Au, Ag, etc.) or metal oxide particles (ITO, ATO, etc.) that isolate red ultraviolet rays on the PET substrate through magnetron sputtering technology, thereby achieving selective transmission of 70% of visible light and blocking about 90% of infrared rays and 99% of ultraviolet rays. The explosion-proof function is achieved by the high elasticity of the PET film itself (tensile strength 45MPa~100MPa), and the anti-scratch layer is achieved by the wear resistance of the UV film.

[0005] However, heat transfer isn't limited to solar radiation alone. There are three other pathways: radiation, conduction, and convection. Radiation accounts for approximately 70%, while conduction accounts for 30%. Current development of thermal insulation materials primarily focuses on reducing radiation from glass, while the remaining 30% of conduction is often overlooked.

[0006] In summary, existing thermal insulation coatings are applied directly to glass. Their working principle is to convert radiant heat into physical heat, which requires convective air to carry away. Without convective air, a large amount of heat will remain in the coating and the base glass. Once the temperature reaches a certain level, it will also be transferred through the glass into the room, thus failing to provide insulation. Furthermore, prolonged high temperatures can shorten the service life of both the material and the glass, resulting in serious consequences.

[0007] Existing thermal insulation films utilize nanoscale reflective materials to effectively reflect far-infrared sunlight with wavelengths above 2500nm. However, this intense reflected light can cause severe light pollution and insufficient indoor lighting. Furthermore, infrared heat energy primarily concentrates in the 760-1500nm range, making the actual effectiveness of thermal insulation films less than ideal. Furthermore, during use, the heat absorbed by the film accelerates aging of the base material, shortening its service life and preventing long-term energy savings. Summary of the Invention

[0008] One purpose of the present invention is to provide a rare earth light-converting thermal insulation film and its preparation process, so as to obtain a thermal insulation material that can prevent heat radiation and heat conduction, and has stable performance, low cost and high transparency, thus opening up a new way for building energy conservation.

[0009] This purpose is achieved by adopting the following technical solutions:

[0010] A rare earth light-converting thermal insulation film comprises, from top to bottom, a first thermal insulation film, a second thermal insulation film, and a third thermal insulation film. The first thermal insulation film, the second thermal insulation film, and the third thermal insulation film are all provided with a plurality of glass beads. The glass beads in the first thermal insulation film are wrapped with a rare earth light-converting layer, the glass beads in the second thermal insulation film are wrapped with a heat radiation layer, and the glass beads in the third thermal insulation film are wrapped with a heat blocking layer.

[0011] Among them, the rare earth light conversion layer is an existing material, and its function is to absorb infrared photons and convert radiant heat energy into physical heat energy.

[0012] The heat radiation layer is an existing material, and its function is to reflect the physical heat energy converted from the radiant heat energy into the natural air.

[0013] The heat blocking layer is an existing material, and its function is heat insulation.

[0014] The rare earth light-conversion layer in the first thermal insulation film is made of rare earth boride. The localized surface plasmon resonance effect of its free electrons enables it to have strong absorption and scattering effects on thermal radiation in the near-infrared light region of 750nm-1100nm. Cesium tungsten bronze has a strong shielding effect on near-infrared light with a wavelength greater than 1100nm, achieving selective absorption of infrared photons and converting radiant heat energy into physical heat energy, so that the radiant heat energy cannot pass through this layer of medium, thereby achieving the thermal insulation function.

[0015] The thermal radiation layer in the second thermal insulation film reflects infrared light waves, and reflects the physical heat energy converted from radiant heat energy into the natural air, allowing the natural air outside to take away the physical heat, and will not keep the physical heat in the surface layer of the material itself, blocking the physical heat from being conducted inward.

[0016] The heat-blocking layer in the third thermal insulation film utilizes the inherent material properties of indium tin oxide and the principle of electron-hole thermal emission. The thermally insulating glass microbead coating has excellent heat reflectivity, shielding against ultraviolet and infrared radiation, effectively isolating the sun's thermal radiation energy.

[0017] Existing thermally insulating transparent films convert radiant heat into physical heat, which requires convective air to carry away. Without this convective air, a significant amount of heat will remain in the coating and the underlying glass. Once the temperature reaches a certain level, it will also be transferred through the glass into the interior, rendering the insulation ineffective. Furthermore, prolonged high temperatures can shorten the lifespan of both the material and the glass, resulting in serious consequences.

[0018] The present invention utilizes a stack of three different functional materials to achieve heat reflection without causing light pollution, while also effectively blocking heat. The first thermal insulation film converts light into heat, the second radiates heat away, preventing it from accumulating within the material, and the third prevents excess heat from the second film from being transferred to the substrate. Therefore, the thermal insulation film of the present invention not only offers excellent light transmission but also excellent heat insulation.

[0019] Among them, preferably, the diameter of the glass beads in the first thermal insulation film is larger than the diameter of the glass beads in the third thermal insulation film, and the diameter of the glass beads in the third thermal insulation film is larger than the diameter of the glass beads in the second thermal insulation film.

[0020] The diameter of the glass beads in the first thermal insulation film is the largest, so it can effectively improve the light transmission effect, allowing more light to pass through the first thermal insulation film to reach the second thermal insulation film and the third thermal insulation film. The diameter of the glass beads in the second thermal insulation film is the smallest, so that it can reflect infrared rays to the greatest extent, better radiate heat, and prevent heat from staying on the third thermal insulation film.

[0021] Furthermore, the ratio of the outer diameter of the glass beads in the first thermal insulation film to the thickness of the rare earth light-conversion layer is 6:1-2. The ratio of the outer diameter of the glass beads in the second thermal insulation film to the thickness of the heat-radiating layer is 3:1-2. The ratio of the outer diameter of the glass beads in the third thermal insulation film to the thickness of the heat-blocking layer is 5:1-2. Within these ratios, each film layer achieves a better effect.

[0022] Preferably, the glass beads in the first thermal insulation film can be located on one or more layers, the glass beads in the second thermal insulation film can be located on one or more layers, and the glass beads in the third thermal insulation film can be located on one or more layers.

[0023] Furthermore, the uniformity of the distribution of the glass beads on the first thermal insulation film, the second thermal insulation film and the third thermal insulation film is improved.

[0024] Furthermore, two adjacent glass beads in the first thermal insulation film are in contact with each other, two adjacent glass beads in the second thermal insulation film are in contact with each other, and two adjacent glass beads in the third thermal insulation film are in contact with each other, further ensuring that the glass beads are evenly distributed on the film.

[0025] At the same time, the existing preparation process of thermal insulation transparent film usually mixes glass beads, silane coupling agent and other materials together, extrudes them, and stretches them. During the stretching process, it is easy to cause uneven distribution of glass beads on the film, and the uneven distribution of glass beads on the film can easily affect the performance of the film.

[0026] Based on this, the present invention adjusts a preparation process of a rare earth light-converting thermal insulation film, and the method includes three arrangement devices and a synthesis device;

[0027] First, a first film, a second film, and a third film are prepared. The first film, the second film, and the third film are all films that have been stretched. Then, a rare earth light-converting layer is wrapped on the glass microbeads to obtain a plurality of first microbeads. A heat radiation layer is wrapped on the glass microbeads to obtain a plurality of second microbeads. A heat blocking layer is wrapped on the glass microbeads to obtain a plurality of third microbeads.

[0028] placing a first film and a plurality of first microbeads in a first arranging device, and arranging the plurality of first microbeads and fusing them on the first film to obtain a first thermal insulation film;

[0029] placing the second film and a plurality of second microbeads in a second arranging device, and arranging and fusing the plurality of second microbeads on the second film to obtain a second thermal insulation film;

[0030] placing a third film and a plurality of third microbeads in a third arranging device, and arranging the plurality of third microbeads and fusing them on the third film to obtain a third thermal insulation film;

[0031] The first thermal insulation film, the second thermal insulation film and the third thermal insulation film are rolled and compounded by a synthesis device to obtain a thermal insulation film.

[0032] Among them, the arrangement device includes a first conveying structure, a second conveying structure and a microbead feeding structure. The first conveying structure is provided with a microbead arrangement mold, and the first conveying structure is used to convey the microbead arrangement mold; the second conveying structure is used to heat and convey the first film or the second film or the third film; the microbead feeding structure places the microbeads on the microbead arrangement mold; after the microbeads are located on the microbead arrangement mold, the first conveying structure conveys the microbead arrangement mold with the microbeads to the first film or the second film or the third film on the second conveying structure.

[0033] By first preparing the first film, the second film and the third film, and then embedding the first microbeads, the second microbeads and the third microbeads into the first film, the second film and the third film respectively, the phenomenon of uneven distribution of microbeads in the film when stretching is avoided, which affects the performance of the film.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0035] The present invention relates to a rare earth light-converting thermal insulation film and a preparation process thereof. The present invention integrates the functions of heat insulation, radiation and heat insulation. The solar radiant heat energy is first converted into physical heat energy, and the physical heat energy is reflected into the natural air through the radiation layer, so that the natural air outside can take away the physical heat without retaining the physical heat on the surface of the material itself. The remaining ultraviolet rays and infrared rays are then shielded by the heat insulation layer to completely block the physical heat from being conducted inward, thereby effectively improving the effective performance of the rare earth light-converting thermal insulation film and the service life of the product.

[0036] This invention utilizes glass microbeads of varying sizes, sprayed with different functional thermal insulation coatings. The outer layer utilizes large, thermally insulating glass microbeads to convert solar radiant heat into physical heat, effectively improving visible light transparency. The middle layer utilizes small, radiant, thermally insulating glass microbeads, which better radiate physical heat outward and effectively conduct low-energy heat inward. The inner layer utilizes medium-sized thermally insulating glass microbeads, which effectively shield remaining ultraviolet and infrared rays, completely blocking the inward conduction of physical heat, thereby enhancing the film's visible light transparency and thermal insulation performance.

[0037] The present invention adopts a multi-layer, multi-specification material independent arrangement technology, effectively improving the uniformity of glass microbead arrangement to ensure product functionality and reliability. This overcomes the technical problem of uneven glass microbead arrangement during the stretching process after mixing and extruding glass microbeads with materials in the existing technology, and solves the problem of reduced thermal insulation function and poor effect caused by uneven arrangement of glass microbeads.

[0038] At the same time, the preparation method of layered and functional composite can effectively exert the function and stability of each layer of material, and improve the utilization rate and service life of the material.

[0039] Secondly, the rare earth light-conversion layer of the present invention is made from rare earth borides, a novel high-tech material composed of rare earth elements and polymer materials. Rare earth elements enhance the material's performance and stability. The polymer material, made by combining rare earth elements with polyurethane, exhibits superior thermal insulation and adhesion properties. Compared to traditional building insulation materials, it offers a more pronounced insulation effect, effectively blocking heat transfer between indoor and outdoor air. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0041] Figure 1 Schematic diagram of the thermal insulation film structure consisting of a first thermal insulation film, a second thermal insulation film and a third thermal insulation film;

[0042] Figure 2 Schematic diagram of the arrangement device structure;

[0043] Figure 3 A schematic diagram of the structure of the placement plate along the conveying direction of the feed section of the microbead arrangement mold;

[0044] Figure 4 is a schematic diagram of the first supplementary structure;

[0045] Figure 5 This is a schematic diagram of the structure in which the adjustment plate is inserted between two adjacent glass beads in the first supplementary structure;

[0046] Figure 6 This is a schematic diagram of the structure in which the adjustment plate drives the glass beads to move to the corresponding pipe in the first supplementary structure;

[0047] Figure 7 This is a structural schematic diagram of the first expansion plate in the first supplementary structure being opened;

[0048] Figure 8 It is a structural schematic diagram of an adjustment rod provided between two adjacent adjustment plates;

[0049] Figure 9 Schematic diagram of the structure after the adjusting rod is extended.

[0050] Markings and corresponding parts names in the accompanying drawings:

[0051] 1-first thermal insulation film, 2-first microbeads, 3-rare earth light conversion layer, 4-second thermal insulation film, 5-second microbeads, 6-thermal radiation layer, 7-third thermal insulation film, 8-third microbeads, 9-heat blocking layer, 10-first conveying structure, 11-second conveying structure, 12-microbead arrangement mold, 13-placing plate, 14-baffle, 15-feeding pipe, 16-action plate, 17-first detection structure, 18-first supplementary structure, 181-pipeline, 182-second telescopic plate, 183-first telescopic plate, 184-upper end surface, 185-adjustment plate, 186-adjustment rod, 19-second detection structure, 20-second supplementary structure, 21-third detection structure. DETAILED DESCRIPTION

[0052] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0053] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0054] Example 1

[0055] like Figure 1 As shown, from top to bottom, it includes a first thermal insulation film 1, a second thermal insulation film 4 and a third thermal insulation film 7. A number of glass beads are provided in the first thermal insulation film 1, the second thermal insulation film 4 and the third thermal insulation film 7. The glass beads in the first thermal insulation film 1 are wrapped with a rare earth light conversion layer 3, the glass beads in the second thermal insulation film 4 are wrapped with a heat radiation layer 6, and the glass beads in the third thermal insulation film 7 are wrapped with a heat blocking layer 9.

[0056] The diameter of the glass beads in the first thermal insulation film 1 is greater than that in the third thermal insulation film 7 , and the diameter of the glass beads in the third thermal insulation film 7 is greater than that in the second thermal insulation film 4 .

[0057] The glass beads in the first thermal insulation film 1 are located on the same plane, which is the first plane; the glass beads in the second thermal insulation film 4 are located on the same plane, which is the second plane; the glass beads in the third thermal insulation film 7 are located on the same plane, which is the third plane; the first plane, the second plane and the third plane are parallel to each other.

[0058] Example 2

[0059] Based on Example 1, the ratio of the outer diameter of the glass beads in the first thermal insulation film 1 to the thickness of the rare earth light-converting layer 3 is 6:2. The ratio of the outer diameter of the glass beads in the second thermal insulation film 4 to the thickness of the heat radiation layer 6 is 3:1. The ratio of the outer diameter of the glass beads in the third thermal insulation film 7 to the thickness of the heat-blocking layer 9 is 5:1.5.

[0060] In some embodiments, the glass beads in the first thermal insulation film 1 are respectively located on multiple parallel planes, the glass beads in the second thermal insulation film 4 are respectively located on multiple parallel planes, and the glass beads in the third thermal insulation film 7 are respectively located on multiple parallel planes.

[0061] In some embodiments, two adjacent glass beads in the first thermal insulation film 1 are in contact with each other, two adjacent glass beads in the second thermal insulation film 4 are in contact with each other, and two adjacent glass beads in the third thermal insulation film 7 are in contact with each other.

[0062] The visible light transmittances of the thermal insulation films prepared in Example 1 and Example 2 are 97% and 98%, respectively.

[0063] A 1m x 1m x 1m simulated test room was used as the test object. The sides and bottom of the simulated room were constructed with 5cm thick expanded polystyrene panels to prevent interference, and the top was covered with 6mm thick flat glass. During the test, the thermal insulation films prepared in Examples 1 and 2 were applied to the top glass. The simulated room temperature was set to 25°C. The temperature changes over time were then measured under direct sunlight at 35°C to assess the thermal insulation performance.

[0064] Among them, the initial temperature of the thermal insulation films prepared in Example 1 and Example 2 is 25°C. After 1 hour of irradiation, the temperature of the thermal insulation films prepared in Example 1 and Example 2 is 25°C. After 3 hours of irradiation, the temperatures of the thermal insulation films prepared in Example 1 and Example 2 are 26.5°C and 26.1°C, respectively.

[0065] Therefore, the thermal insulation films prepared in Example 1 and Example 2 have good visible light transmittance and thermal insulation effect.

[0066] Example 3

[0067] Based on the above embodiment, a preparation process of a rare earth light-converting thermal insulation film includes the following steps:

[0068] Step 1: preparing a first film, a second film and a third film;

[0069] The first, second, and third films are made of existing materials, typically a PET transparent base layer. The first, second, and third films are prepared using an existing method, comprising placing a mixed material in the material barrel of an extruder, preheating the mixture at 160°C for 20 minutes, and then passing the material through a feeding zone, a screw extrusion zone, a metering zone, and out of a die. The material is then transferred to a casting machine for casting. The extruder die temperature of the casting machine is 220°C, and the casting speed of the casting machine is 3 m / min.

[0070] After being stretched transversely and longitudinally, the film was fixed at 150° C. for 10 minutes and then cooled at 25° C. for 20 minutes to obtain the first film, the second film and the third film of the desired thickness.

[0071] Step 2: Wrapping the rare earth light conversion layer 3 on the glass microbeads to obtain a plurality of first microbeads 2;

[0072] Wrapping the heat radiation layer 6 on the glass microbeads to obtain a plurality of second microbeads 5;

[0073] Wrapping the heat blocking layer 9 on the glass microbeads to obtain a plurality of third microbeads 8;

[0074] Step 3: placing the first film and a plurality of first microbeads 2 in a first arranging device, and the arranging device arranges and fuses the plurality of first microbeads 2 on the first film to obtain a first thermal insulation film 1;

[0075] The second film and a plurality of second micro-beads 5 are placed in a second arranging device, and the arranging device arranges and fuses the plurality of second micro-beads 5 on the second film to obtain a second thermal insulation film 4;

[0076] placing a third film and a plurality of third micro-beads 8 in a third arranging device, and arranging the plurality of third micro-beads 8 and fusing them on the third film to obtain a third thermal insulation film 7;

[0077] The first thermal insulation film 1 , the second thermal insulation film 4 and the third thermal insulation film 7 are rolled and compounded by a synthesis device to obtain a thermal insulation film.

[0078] The method includes three arrangement devices and a synthesis device;

[0079] Among them, the arrangement device is as follows Figure 2 As shown, the arrangement device includes a first conveying structure 10 , a second conveying structure 11 and a microbead feeding structure, and a microbead arrangement mold 12 is provided on the first conveying structure 10 .

[0080] The microbead arrangement mold 12 is provided with a plurality of placement grooves, the size of which is greater than or equal to the diameter of the glass beads in the first thermal insulation film 1 or the second thermal insulation film 4 or the third thermal insulation film 7, and the size of the microbead arrangement mold 12 and the size and spacing of the placement grooves are adjusted as needed.

[0081] The microbead array mold 12 is placed on the first conveying structure 10 and conveyed by the first conveying structure 10. The second conveying structure 11 is used to heat and convey the first film, the second film, or the third film; the microbead feeding structure positions the microbeads on the microbead array mold 12; after the microbeads are positioned on the microbead array mold 12, the first conveying structure 10 conveys the microbead array mold 12 with the microbeads onto the first film, the second film, or the third film on the second conveying structure 11.

[0082] The microbead array mold 12 is placed on the first conveying structure 10 and conveyed by the first conveying structure 10. The second conveying structure 11 is used to heat and convey the first film, the second film, or the third film; the microbead feeding structure positions the microbeads on the microbead array mold 12; after the microbeads are positioned on the microbead array mold 12, the first conveying structure 10 conveys the microbead array mold 12 with the microbeads onto the first film, the second film, or the third film on the second conveying structure 11.

[0083] When the microbead array mold 12 is placed on the first conveying structure 10, it includes a conveying section and a feeding section, and the angle between the feeding section and the horizontal direction is less than 90 degrees. Preferably, the angle between the feeding section and the horizontal direction is 30 degrees.

[0084] The microbead feeding structure includes a placement plate 13, a baffle 14 is provided on the placement plate 13, a feeding pipe 15 is provided on the placement plate 13, and an action plate 16 is provided on the placement plate 13. The action plate 16 is used to act on the glass microbeads on the placement groove to prevent a large number of glass microbeads from accumulating on the microbead arrangement mold 12.

[0085] The action plate 16 divides the placement plate 13 into a feeding area and a detection area. The baffle 14 is located between the placement plate 13 and the feeding section of the microbead arrangement mold 12. The feed pipe 15 is located in the feeding area. The glass microbeads enter between the placement plate 13 and the feeding section through the feed pipe 15 and contact the feeding section of the microbead arrangement mold 12. The feeding section of the microbead arrangement mold 12 fills the glass microbeads into the placement groove of the microbead arrangement mold 12 during the movement.

[0086] A coordinate system is established in the microbead array mold 12 . The placement grooves on the microbead array mold 12 are evenly distributed on the microbead array mold 12 . The placement grooves on each row and column of the microbead array mold 12 have coordinates.

[0087] A first detection structure 17 and a first supplementary structure 18 are provided on the detection area of ​​the placement plate 13. A camera is provided at the lower end of the first detection structure 17. The camera is used to obtain images of each horizontal row of placement slots in the microbead arrangement mold 12. When one of the horizontal rows of placement slots lacks glass beads, the coordinates of the placement slot are obtained. When the placement slot moves to the first supplementary structure, the telescopic tube corresponding to the coordinate on the first supplementary structure is extended and moved to the corresponding placement slot, and the glass beads in the telescopic tube are added to the placement slot lacking glass beads to complete the supplementation.

[0088] The first supplementary structure 18 is a rectangular cavity, in which a plurality of pipes 181 arranged side by side are provided. The pipes 181 in the first supplementary structure 18 correspond one-to-one to the placement slots on each horizontal row of the microbead arrangement mold 12. The first conveying structure 10 drives the microbead arrangement mold 12 to move along the direction of its row. In the original state, the pipes 181 on the first supplementary structure 18 correspond one-to-one to the placement slots on the first horizontal row of the microbead arrangement mold 12. When the microbead arrangement mold 12 moves one unit position, the pipes 181 on the first supplementary structure 18 correspond one-to-one to the placement slots on the second horizontal row of the microbead arrangement mold 12.

[0089] Glass beads are provided in each placement groove. When there is no glass position on one of the placement grooves, when the placement groove moves to the first supplementary structure, the lower end of the corresponding pipe on the first supplementary structure extends to contact the placement groove, and the glass position in the pipe enters the placement groove, completing the replenishment of the glass beads.

[0090] In some embodiments, Figure 3 As shown, the placement plate 13 is further provided with a second detection structure 19 and a second supplementary structure 20 along the conveying direction of the feeding section of the micro-bead arrangement mold 12. The structures of the second detection structure 19 and the second supplementary structure 20 are respectively the same as the structures of the first detection structure 17 and the first supplementary structure 18. The second detection structure 19 is used for the second detection of whether there is a missing glass position in the placement slot, and the second supplementary structure is used to supplement the glass position.

[0091] In some embodiments, the placement plate 13 is further provided with a second detection structure 19 , a second supplementary structure 20 and a third detection structure 21 along the conveying direction of the feeding section of the microbead array mold 12 .

[0092] The third detection structure 21 is used to detect for the third time whether there is any missing glass position in the placement slot. If there is, an alarm will be issued and the staff will replenish it.

[0093] Example 4

[0094] On the basis of Example 3, the first supplementary structure 18 is as follows Figure 4 As shown, the first supplementary structure 18 includes a storage area and a discharge area from top to bottom. The storage area is used to place glass beads, and a plurality of pipes 181 arranged side by side are provided in the discharge area.

[0095] The pipe 181 in the first supplementary structure 18 corresponds one-to-one to the placement slots on each horizontal row of the microbead arrangement mold 12. A first telescopic plate 183 is provided at the upper end of the pipe 181, and a second telescopic plate 182 is provided inside the pipe 181. In some embodiments, the inner diameter of the pipe 181 is the same as the inner diameter of the glass beads.

[0096] When the glass beads are in the storage area, the glass beads correspond one-to-one to the upper ends of the pipes 181. When one of the pipes needs to be replenished with glass beads, the first telescopic plate 183 and the second telescopic plate 182 on the pipe 181 are opened, allowing the glass to enter the pipe and be located on the corresponding placement slot.

[0097] In some embodiments, a plurality of adjustment plates 185 are provided on the upper end surface 184 of the first supplementary structure 18 . The lengths of the plurality of adjustment plates 185 are retractable and movable on the upper end surface 184 .

[0098] When the placement grooves on each horizontal row of the microbead arrangement mold 12 are not in contact with each other and the placement grooves on each horizontal row of the microbead arrangement mold 12 have a certain distance, the adjustment plate is inserted between two adjacent glass beads, such as Figure 5 As shown, it drives the glass beads to move to the corresponding pipes, as shown Figure 6 As shown, the first telescopic plate 183 is then opened, as shown Figure 7 As shown, the glass is positioned on the second telescopic plate 182 in the pipe, the first telescopic plate 183 is closed, and glass beads are reintroduced into the storage area. When one of the pipes needs to be replenished with glass beads, the second telescopic plate 182 is opened, allowing the glass to be positioned in the pipe and positioned on the corresponding placement slot.

[0099] In some embodiments, Figure 8 As shown, the number of the several adjustment plates 185 on the upper end surface 184 of the first supplementary structure 18 is one more than the number of glass beads. In the original state, the adjustment plate can be directly located between two adjacent glass beads after being extended, and an adjustment rod 186 is provided between the two adjacent adjustment plates 185.

[0100] When the glass beads are moved to the corresponding pipe, the adjusting rod 186 is extended. Figure 9 As shown, the adjusting plate 185 is driven to move.

[0101] On the basis of the above embodiment, the synthesis device is used to roll-combine the first thermal insulation film 1 , the second thermal insulation film 4 and the third thermal insulation film 7 respectively obtained by the three arrangement devices to obtain a thermal insulation film.

[0102] The terms "first," "second," and "third" used herein are merely used to distinguish corresponding components for clarity of description and are not intended to limit any order or emphasize importance. In addition, the term "connected" used herein, unless otherwise specified, may refer to a direct connection or an indirect connection via other components.

[0103] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rare earth light-converting thermal insulation film, characterized in that: From top to bottom, the first thermal insulation film (1), the second thermal insulation film (4) and the third thermal insulation film (7) are sequentially provided with a plurality of glass microbeads. The glass microbeads in the first thermal insulation film (1) are wrapped with a rare earth light-converting layer (3). The glass microbeads in the second thermal insulation film (4) are wrapped with a heat radiation layer (6). The heat radiation layer (6) is used to reflect infrared light waves. The glass beads in the third thermal insulation film (7) are wrapped with a heat blocking layer (9); the diameter of the glass beads in the first thermal insulation film (1) is larger than the diameter of the glass beads in the third thermal insulation film (7), and the diameter of the glass beads in the third thermal insulation film (7) is larger than the diameter of the glass beads in the second thermal insulation film (4); the glass beads in the first thermal insulation film (1) are located on the same plane, which is the first plane; the glass beads in the second thermal insulation film (4) are located on the same plane, which is the second plane; the glass beads in the third thermal insulation film (7) are located on the same plane, which is the third plane; the first plane, the second plane and the third plane are parallel to each other; The preparation process of the thermal insulation film comprises the following steps: preparing a first film, a second film, and a third film; Wrapping the rare earth light-converting layer (3) on the glass microbeads to obtain a plurality of first microbeads (2); Wrapping the heat radiation layer (6) on the glass microbeads to obtain a plurality of second microbeads (5); Wrapping the heat blocking layer (9) on the glass microbeads to obtain a plurality of third microbeads (8); This process includes three arrangement devices and a synthesis device; Placing a first film and a plurality of first microbeads (2) in a first arranging device, and arranging and fusing the plurality of first microbeads (2) on the first film to obtain a first thermal insulation film (1); placing the second film and a plurality of second microbeads (5) in a second arranging device, and arranging the plurality of second microbeads (5) and fusing them on the second film to obtain a second thermal insulation film (4); placing a third film and a plurality of third microbeads (8) in a third arrangement device, and the arrangement device arranges and fuses the plurality of third microbeads (8) on the third film to obtain a third thermal insulation film (7); The first thermal insulation film (1), the second thermal insulation film (4) and the third thermal insulation film (7) are rolled and compounded by a synthesis device to obtain a thermal insulation film; The arrangement device comprises a first conveying structure (10), a second conveying structure (11) and a microbead feeding structure, wherein a microbead arrangement mold (12) is provided on the first conveying structure (10), and the first conveying structure (10) is used to convey the microbead arrangement mold (12); the second conveying structure (11) is used to heat and convey the first film, the second film or the third film; the microbead feeding structure positions the microbeads on the microbead arrangement mold (12); after the microbeads are positioned on the microbead arrangement mold (12), the first conveying structure (10) conveys the microbead arrangement mold (12) with the microbeads to the first film, the second film or the third film on the second conveying structure (11); The microbead arrangement mold (12) is provided with a plurality of placement slots, and the microbead feeding structure includes a placement plate (13), a baffle (14) is provided on the placement plate (13), a feed pipe (15) is provided on the placement plate (13), and an action plate (16) is provided on the placement plate (13); The action plate (16) divides the placement plate (13) into a feeding area and a detection area. The detection area of ​​the placement plate (13) is provided with a first detection structure (17) and a first supplementary structure (18). The first supplementary structure (18) is a rectangular cavity. A plurality of pipes (181) arranged side by side are provided in the rectangular cavity. The pipes (181) in the first supplementary structure (18) correspond one-to-one to the placement slots on each horizontal row of the microbead arrangement mold (12). The first conveying structure (10) drives the microbead arrangement mold (12) to move along the direction of its row. In the original state, the pipes (181) on the first supplementary structure (18) correspond one-to-one to the placement slots on the first horizontal row of the microbead arrangement mold (12). When the microbead arrangement mold (12) moves one unit position, the pipes (181) on the first supplementary structure (18) correspond one-to-one to the placement slots on the second horizontal row of the microbead arrangement mold (12). A plurality of adjustment plates (185) are provided on the upper end surface (184) of the first supplementary structure (18), and the lengths of the plurality of adjustment plates (185) are retractable and movable on the upper end surface (184); The ratio of the outer diameter of the glass beads in the first thermal insulation film (1) to the thickness of the rare earth light conversion layer (3) is 6:1-2; the ratio of the outer diameter of the glass beads in the second thermal insulation film (4) to the thickness of the heat radiation layer (6) is 3:1-2; and the ratio of the outer diameter of the glass beads in the third thermal insulation film (7) to the thickness of the heat blocking layer (9) is 5:1-2.

2. The rare earth light-converting thermal insulation film according to claim 1, characterized in that: The glass microbeads in the first thermal insulation film (1) are respectively located on a plurality of mutually parallel planes, the glass microbeads in the second thermal insulation film (4) are respectively located on a plurality of mutually parallel planes, and the glass microbeads in the third thermal insulation film (7) are respectively located on a plurality of mutually parallel planes.

3. The rare earth light-converting thermal insulation film according to claim 1, characterized in that: Two adjacent glass micro-beads in the first thermal insulation film (1) are in contact with each other, two adjacent glass micro-beads in the second thermal insulation film (4) are in contact with each other, and two adjacent glass micro-beads in the third thermal insulation film (7) are in contact with each other.

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