Light-regulating assembly, preparation method therefor, and use thereof

Abstract

The present invention provides a light-regulating assembly. The light-regulating assembly comprises: a first transparent substrate, a second transparent substrate, and a light-regulating film provided between the first transparent substrate and the second transparent substrate; a first interlayer adhesive layer provided between the first transparent substrate and the light-regulating film, and a second interlayer adhesive layer provided between the second transparent substrate and the light-regulating film; and a barrier layer provided on at least a portion of the periphery of the light-regulating film, the barrier layer comprising at least one of a POE interlayer and a TPO interlayer. The present application further provides a light-regulating assembly. The barrier layer comprises at least one of an SGP interlayer, a POE interlayer, and a TPO interlayer. The present application further provides a preparation method for the light-regulating assembly and a use thereof. By means of the introduction of an SGP interlayer, a POE interlayer, or a TPO interlayer as a barrier layer, the light-regulating assembly provided in the present application achieves good moisture barrier performance and a low-haze appearance effect of the light-regulating assembly, prolonging the service life of the light-regulating assembly while minimizing the area of regions without light-regulating functionality at the edges of the light-regulating assembly, which is of great significance for the wide application of the light-regulating assembly.

Description

A dimming component, its preparation method and its application

[0001] Cross-references

[0002] This application claims priority to International Patent Application No. PCT / CN2024 / 130738, filed on November 8, 2024, entitled "A dimming component, its preparation method and its application", the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] This invention relates to the field of light control device technology, and in particular to a dimming component, its preparation method and its application. Background Technology

[0004] A dimming module is a light control device, primarily consisting of a dimming film placed between two transparent substrates. Types of dimming films include suspended particle (SPD) dimming films, polymer-dispersed liquid crystal (PDLC) dimming films, electrochromic (EC) dimming films, thermochromic (TC) dimming films, and photochromic (PC) dimming films. Dimming modules made using suspended particle dimming films, polymer-dispersed liquid crystal dimming films, and electrochromic dimming films are respectively called suspended particle dimming modules, polymer-dispersed liquid crystal dimming modules, and electrochromic dimming modules. For suspended particle dimming modules, polymer-dispersed liquid crystal dimming modules, or electrochromic dimming modules, when electricity is applied, the arrangement or state of the active materials in the dimming film changes, thereby altering the light transmittance characteristics of the dimming module, such as changing from low transmittance to high transmittance, or from high transmittance to low transmittance. These dimming components, which achieve rapid switching between light-transmitting and light-blocking states through the action of electric fields / currents, have the advantages of actively regulating light transmittance and energy saving. The device can be used as smart windows, rearview mirrors, sunglasses, displays, etc. in spacecraft, high-speed trains, automobiles, buildings, etc.

[0005] The fabrication of suspended particle dimming components, polymer-dispersed liquid crystal dimming components, and electrochromic dimming components typically uses PVB (Polyvinyl butyral interlayer) or EVA (Ethylene-vinyl acetate) films, which are also used in the production of laminated glass. The surrounding layer also uses PVB or EVA films. However, the poor water-blocking properties of PVB or EVA films make the edges of the dimming film in the dimming component susceptible to deterioration and failure due to moisture in the environment, resulting in substandard product performance. Current common practice is to reduce the size of the dimming film and leave a larger space around the dimming component, i.e., a wider surrounding layer, to prevent moisture penetration. However, this results in a dimming function not being available in an area several centimeters wide around the component, thus limiting the application scenarios of the dimming component.

[0006] POE or TPO films have excellent water vapor barrier properties, but the suitable lamination temperature for dimming films is generally below 120℃. The ideal melting point of POE or TPO is 135-160℃. Therefore, during the lamination process, POE or TPO does not completely melt, resulting in high haze and poor transparency of the dimming module, which seriously affects the dimming performance of the dimming module.

[0007] Therefore, a better water-blocking solution is needed to prevent the dimming performance from deteriorating or failing due to moisture in the environment around the dimming components. It can also reduce the width of the enclosure layer and expand the application scenarios of the dimming components. Summary of the Invention

[0008] The technical problem solved by this invention is to provide a dimming component. The dimming component provided in this application achieves high temperature and high humidity aging stability and can meet the requirements for water vapor barrier.

[0009] This application provides a dimming component, including:

[0010] A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate;

[0011] A first adhesive layer is disposed between the first transparent substrate and the dimming film, and a second adhesive layer is disposed between the second transparent substrate and the dimming film;

[0012] A barrier layer is disposed around at least a portion of the dimming film;

[0013] The enclosure layer includes at least one of POE film and TPO film.

[0014] This application also provides a dimming component, including:

[0015] A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate;

[0016] A first adhesive layer is disposed between the first transparent substrate and the dimming film, and a second adhesive layer is disposed between the second transparent substrate and the dimming film;

[0017] A barrier layer is disposed around at least a portion of the dimming film;

[0018] The enclosure layer includes at least one of SGP film, POE film and TPO film.

[0019] In some specific embodiments, at least a portion of the perimeter of the first laminated layer is provided with a retaining layer, and / or at least a portion of the perimeter of the second laminated layer is provided with a retaining layer.

[0020] In some specific embodiments, the first adhesive layer and / or the second adhesive layer include at least one of POE film and TPO film.

[0021] In some specific embodiments, the first adhesive layer and / or the second adhesive layer is a composite structure of three adhesive films, which, from the inside out, are an inner POE adhesive film or an inner TPO adhesive film, a middle EVOH adhesive film, and an outer POE adhesive film or an outer TPO adhesive film.

[0022] In some specific embodiments, the first adhesive layer and / or the second adhesive layer include at least one of SGP film, POE film and TPO film.

[0023] In some specific embodiments, the first adhesive layer and / or the second adhesive layer is a composite structure of three adhesive films, which, from the inside out, are an inner POE adhesive film, an inner TPO adhesive film or an inner SGP adhesive film, a middle EVOH adhesive film, and an outer POE adhesive film, an outer TPO adhesive film or an outer SGP adhesive film.

[0024] In some specific embodiments, the enclosure layer is a composite structure of three layers of adhesive film, which, from the inside out, consists of an inner POE adhesive film or an inner TPO adhesive film, a middle EVOH adhesive film, and an outer POE adhesive film or an outer TPO adhesive film, based on the dimming film end.

[0025] In some specific embodiments, the enclosure layer is a composite structure of three layers of adhesive film, which, from the inside out, are an inner POE adhesive film, an inner TPO adhesive film or an inner SGP adhesive film, a middle EVOH adhesive film, and an outer POE adhesive film, an outer TPO adhesive film or an outer SGP adhesive film.

[0026] In some specific embodiments, the enclosure layer is a composite structure of three adhesive films, with the first interlayer as the base, and from the inside out, the layers are an inner POE film or an inner TPO film, a middle EVOH film, and an outer POE film or an outer TPO film; and / or, the enclosure layer is a composite structure of three adhesive films, with the second interlayer as the base, and from the inside out, the layers are an inner POE film or an inner TPO film, a middle EVOH film, and an outer POE film or an outer TPO film.

[0027] In some specific embodiments, the enclosure layer is a composite structure of three adhesive films, with the first interlayer as the base, and from the inside out, the layers are an inner POE film, an inner TPO film or an inner SGP film, a middle EVOH film, and an outer POE film, an outer TPO film or an outer SGP film; and / or, the enclosure layer is a composite structure of three adhesive films, with the second interlayer as the base, and from the inside out, the layers are an inner POE film, an inner TPO film or an inner SGP film, a middle EVOH film, and an outer POE film, an outer TPO film or an outer SGP film.

[0028] In some specific embodiments, the composite structure of the three-layer adhesive film is prepared by a co-extrusion composite process.

[0029] In some specific embodiments, the thickness ratio of the inner layer, the middle layer and the outer layer is 1:(0.5~1.5):(1~5).

[0030] In some specific embodiments, the cross-section of the enclosure layer is either a regular shape or an irregular shape.

[0031] In some specific embodiments, the width of the enclosure layer is 3mm to 20mm.

[0032] In some specific embodiments, the haze of the dimming components in the corresponding area of ​​the enclosure layer is less than 10%.

[0033] In some specific embodiments, the first transparent substrate and / or the second transparent substrate are selected from at least one of transparent glass plate and transparent plastic sheet.

[0034] In some specific embodiments, the dimming film is selected from at least one of suspended particle dimming film, polymer-dispersed liquid crystal dimming film, and electrochromic dimming film.

[0035] This application also provides a method for preparing the aforementioned dimming component, comprising the following steps:

[0036] The dimming component structure described in the above scheme is obtained by stacking the layers, laminating them together, heating them a second time, and then cooling them.

[0037] This application also provides a method for preparing the aforementioned dimming component, comprising the following steps:

[0038] The dimming component is obtained by laminating the layers according to the structure described above.

[0039] In some specific embodiments, the temperature of the lamination process is 90–120°C.

[0040] In some specific embodiments, the secondary heating temperature is 160-260°C and the time is 10s-20min; the secondary heating is used to heat the area using POE film or PTO film, and the secondary heating is carried out by high-frequency induction heating, high-temperature conduction heating or high-temperature radiation heating; the cooling is carried out to below 120°C.

[0041] This application also provides the application of a dimming component in glass products, wherein the dimming component is the dimming component described in the above-described scheme or the dimming component prepared by the preparation method described in the above-described scheme.

[0042] In some specific embodiments, the glass product is automotive window glass, panoramic glass, or a glass curtain wall.

[0043] This application provides a dimming component, which includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially. At least a portion of the periphery of the dimming film is provided with a barrier layer, which includes at least one of POE film and TPO film. The dimming component provided in this application achieves high-temperature and high-humidity aging stability and meets moisture barrier requirements by providing a barrier layer around the dimming film and using a film layer including at least one of POE film and TPO film as the barrier layer.

[0044] This application also provides a dimming component, which includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially. At least a portion of the area around the dimming film is provided with a barrier layer, which includes at least one of SGP film, POE film, and TPO film. The dimming component provided in this application achieves high-temperature and high-humidity aging stability and meets moisture barrier requirements by providing a barrier layer around the dimming film and using a film layer including at least one of SGP film, POE film, and TPO film as the barrier layer.

[0045] Furthermore, this application also provides a method for preparing a dimming component, wherein a second heating is performed after the interlayer of the dimming component is laminated, so that the dimming component can meet the requirements of water vapor barrier while also having a good low-haze appearance effect. Attached Figure Description

[0046] Figure 1 is a schematic diagram of the dimming component 1 of the present invention;

[0047] Figure 2 is a schematic diagram of the dimming component 2 of the present invention;

[0048] Figure 3 is a schematic diagram of the dimming component 3 of the present invention;

[0049] Figure 4 is a schematic diagram of the dimming component 4 of the present invention;

[0050] Figure 5 is a schematic diagram of the three-layer adhesive film composite structure of the enclosure layer, the first adhesive layer and the second adhesive layer of the present invention.

[0051] Wherein, 1-1 is the first transparent substrate, 2-1 is the first interlayer adhesive layer, 3 is the dimming film, 2-2 is the second interlayer adhesive layer, 1-2 is the second transparent substrate, and 4 is the enclosure layer; 2-1-1, 2-2-1, and 4-1 are independent POE film, TPO film, or SGP film, 2-1-2, 2-2-2, and 4-2 are independent EVOH film, and 2-1-3, 2-2-3, and 4-3 are independent POE film, TPO film, or SGP film. Detailed Implementation

[0052] To further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the scope of the claims of the present invention.

[0053] In view of the water vapor barrier requirements of existing dimming components and the requirement to avoid edge dimming performance degradation and failure, this application provides a dimming component that uses a film layer including POE film and / or TPO film as the enclosure layer of the dimming film, thereby achieving high temperature and high humidity aging stability and meeting water vapor barrier requirements. This application also provides a dimming component that uses a film layer including at least one film of SGP film, POE film, and TPO film as the enclosure layer of the dimming film, thereby achieving high temperature and high humidity aging stability and meeting water vapor barrier requirements; furthermore, through a secondary heating process, the dimming component not only meets the water vapor barrier requirements but also has a good low-haze appearance. Specifically, this application provides a dimming component, including:

[0054] A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate;

[0055] A first adhesive layer is disposed between the first transparent substrate and the dimming film, and a second adhesive layer is disposed between the second transparent substrate and the dimming film;

[0056] A barrier layer is disposed around at least a portion of the dimming film;

[0057] The enclosure layer includes at least one of POE film and TPO film.

[0058] This application also provides a dimming component, including:

[0059] A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate;

[0060] A first adhesive layer is disposed between the first transparent substrate and the dimming film, and a second adhesive layer is disposed between the second transparent substrate and the dimming film;

[0061] A barrier layer is disposed around at least a portion of the dimming film;

[0062] The enclosure layer includes at least one of SGP film, POE film and TPO film.

[0063] In the dimming assembly provided in this application, the first transparent substrate, the first interlayer, the dimming film, the second interlayer, and the second transparent substrate are arranged in a sequentially stacked manner; the obstruction layer is disposed on at least a portion of the periphery of the dimming film; as shown in Figures 1 and 2, in Figure 1, 1-1 is the first transparent substrate, 2-1 is the first interlayer, 3 is the dimming film, 4 is the obstruction layer, 2-2 is the second interlayer, and 1-2 is the second transparent substrate; in Figure 2, 1-1 is the first transparent substrate, 2-1 is the first interlayer, 3 is the dimming film, 4 is the obstruction layer, 2-2 is the second interlayer, and 1-2 is the second transparent substrate. The obstruction layer can be disposed on a portion of the periphery of the dimming film, as shown in Figure 1, or it can be disposed on multiple portions of the periphery of the dimming film, or it can be directly disposed on the periphery of the dimming film, as shown in Figure 2.

[0064] POE is a polyolefin elastomer, which is a random copolymer elastomer of ethylene and high carbon α-olefins. TPO is a polyolefin thermoplastic elastomer, which is a copolymer of ethylene and octene, etc. The enclosure layer includes at least one of POE film and TPO film, that is, the enclosure layer may include POE film, may include TPO film, or may include both POE film and TPO film.

[0065] SGP is an ionic polymer, which is an ethylene-methacrylate copolymer; the enclosure layer includes at least one of SGP film, POE film and TPO film, that is, the enclosure layer may include POE film, may include TPO film, may include SGP film, may include both SGP film and POE film, may include both SGP film and TPO film, may include both POE film and TPO film, or may include both SGP film, POE film and TPO film.

[0066] In one specific embodiment of this application, at least a portion of the perimeter of the first interlayer is provided with a barrier layer, and / or at least a portion of the perimeter of the second interlayer is provided with a barrier layer; in this arrangement of the barrier layer, the first interlayer is larger than or equal to the size of the dimming film, and the first interlayer is smaller than the size of the first transparent substrate; and / or the second interlayer is larger than or equal to the size of the dimming film, and the second interlayer is smaller than the size of the first transparent substrate. Figure 3 is a schematic diagram of the structure of a specific dimming component of this application, wherein 1-1 is a first transparent substrate, 2-1 is a first interlayer, 3 is a dimming film, 4 is a barrier layer, 2-2 is a second interlayer, and 1-2 is a second transparent substrate. Figure 4 is a schematic diagram of the structure in a specific embodiment of the present invention, wherein 1-1 is a first transparent substrate, 2-1 is a first interlayer, 3 is a dimming film, 4 is a barrier layer, 2-2 is a second interlayer, and 1-2 is a second transparent substrate. Similarly, the barrier layer is disposed in a portion of the area around the first interlayer and / or the second interlayer (as shown in Figure 3), or the barrier layer is disposed in multiple portions of the area around the first interlayer and / or the second interlayer, or the barrier layer is directly disposed around the first interlayer and / or the second interlayer (as shown in Figure 4).

[0067] In this application, the first and / or second adhesive layers may include PVB and EVA, which are well known to those skilled in the art. Preferably, the first and / or second adhesive layers may also include at least one of POE and TPO, that is, the first and / or second adhesive layers include POE, or include TPO, or include both POE and TPO. Further, the first and / or second adhesive layers are a composite structure of three adhesive films, with the inner layer being PO from the inside out. E-film or inner TPO film, middle EVOH film and outer POE film or outer TPO film; specifically, the first interlayer and / or the second interlayer, from the inside out, are an inner POE film, a middle EVOH film and an outer POE film, or an inner POE film, a middle EVOH film and an outer TPO film, or an inner TPO film, a middle EVOH film and an outer POE film, or an inner TPO film, a middle EVOH film and an outer TPO film.

[0068] Preferably, the first and / or second interlayer adhesive layers may further include at least one of SGP, POE, and TPO, that is, the first and / or second interlayer adhesive layers include POE, or include TPO, or include SGP, or include SGP and POE, or include SGP and TPO, or include POE and TPO, or include SGP, POE, and TPO; furthermore, the first and / or second interlayer adhesive layers are a composite structure of three adhesive films, which, from the inside out, are an inner POE film, an inner TPO film or an inner SGP film, a middle EVOH film, and an outer POE film, an outer TPO film or an outer SGP film; specifically, the first and / or second interlayer adhesive layers... The layers, from the inside out, are: inner POE film, middle EVOH film, and outer POE film; or inner POE film, middle EVOH film, and outer TPO film; or inner POE film, middle EVOH film, and outer SGP film; or inner TPO film, middle EVOH film, and outer POE film; or inner TPO film, middle EVOH film, and outer TPO film; or inner TPO film, middle EVOH film, and outer SGP film; or inner SGP film, middle EVOH film, and outer SGP film; or inner SGP film, middle EVOH film, and outer TPO film; or inner SGP film, middle EVOH film, and outer TPO film; or inner SGP film, middle EVOH film, or outer POE film.

[0069] The specific structure of the first interlayer is shown in Figure 5, where 2-1-1 is a POE film, TPO film, or SGP film; 2-1-2 is a middle EVOH film; and 2-1-3 is a POE film, TPO film, or SGP film. The three-layer structure of the first interlayer can have a three-layer composite structure in one direction (Figure 5, Figure 1) or a three-layer composite structure in two directions simultaneously (Figure 5, Figure 2). Similarly, the specific structure of the second interlayer is shown in Figure 5, where 2-2-1 is a POE film, TPO film, or SGP film; 2-2-2 is a middle EVOH film; and 2-2-3 is a POE film, TPO film, or SGP film. The three-layer structure of the second interlayer can have a three-layer composite structure in one direction (Figure 5, Figure 3) or a three-layer composite structure in two directions simultaneously (Figure 5, Figure 4).

[0070] In this application, the enclosure layer can be a composite structure of three layers of adhesive film, based on the dimming film end, consisting of an inner POE adhesive film, an inner TPO adhesive film or an inner SGP adhesive film, a middle EVOH adhesive film, and an outer POE adhesive film, an outer TPO adhesive film or an outer SGP adhesive film from the inside out.

[0071] Furthermore, when the enclosure layer is disposed around at least a portion of the first and / or second interlayer adhesive layers, it can also be a composite structure of three adhesive films; based on the end of the first interlayer adhesive layer, from the inside out, it consists of an inner POE adhesive film, an inner TPO adhesive film or an inner SGP adhesive film, a middle EVOH adhesive film and an outer POE adhesive film, an outer TPO adhesive film or an outer SGP adhesive film; and / or, the enclosure layer is a composite structure of three adhesive films, based on the end of the second interlayer adhesive layer, from the inside out, it consists of an inner POE adhesive film, an inner TPO adhesive film or an inner SGP adhesive film, a middle EVOH adhesive film and an outer POE adhesive film, an outer TPO adhesive film or an outer SGP adhesive film.

[0072] The specific structure of the enclosure layer is shown in Figure 5, where 4-1 is a POE film, TPO film or SGP film, 4-2 is a middle EVOH film and 4-3 is a POE film, TPO film or SGP film; the three-layer structure of the enclosure layer can have a three-layer composite structure in one direction (Figure 5, Figure 5, Figure 5), or it can have a three-layer composite structure in two directions simultaneously (Figure 5, Figure 5, Figure 6).

[0073] The aforementioned three-layer composite structure is prepared by a co-extrusion process. Co-extrusion is a molding method that uses two or more different adhesive films, each melted and plasticized separately using two or more extruders, and then feeds them into a die, or uses a distributor to combine the films supplied by each extruder before feeding them into the die, to prepare a composite film. The different adhesive films mentioned here can be of different types, of the same type but different brands, or of the same brand but with different formulations.

[0074] In the above-mentioned three-layer adhesive film composite structure, the thickness ratio of the inner layer, the middle layer and the outer layer is 1:(0.5~1.5):(1~5), specifically, the thickness ratio of the inner layer, the middle layer and the outer layer is 1:(0.5~1.5):(1.5~4), specifically, the thickness ratio of the inner layer, the middle layer and the outer layer is 1:(0.5~1.5):(2~3).

[0075] In this application, the cross-section of the enclosure layer can be a regular shape or an irregular shape, and there are no particular restrictions on this.

[0076] In this invention, the width of the barrier layer has a significant impact on the high-temperature and high-humidity stability of the dimming component. A larger barrier layer provides better moisture barrier performance, which aligns with the general principles of adhesive film materials. However, considering that a larger barrier layer results in a larger non-dimming area at the edge of the dimming component, it can affect the application range of the dimming component. In this invention, the width of the barrier layer can be greater than 20mm, which provides even better moisture barrier performance, but at the cost of reducing the width of the non-dimming area. Therefore, the width of the barrier layer in this invention ranges from 3mm to 20mm, preferably from 4mm to 10mm. The sum of the widths of the barrier layer and the dimming film is substantially the same as the widths of the first transparent substrate and the second transparent substrate; furthermore, the sum of the widths of the barrier layer and the dimming film is substantially the same as the widths of the first adhesive layer and the second adhesive layer. In this application, the haze of the dimming component in the area corresponding to the enclosure layer is less than 10%, further, the haze of the dimming component in the area corresponding to the enclosure layer is less than 6%, and even further, the haze of the dimming component in the area corresponding to the enclosure layer is less than 5%.

[0077] In this invention, the first transparent substrate and the second transparent substrate can be the same or different, and there are no particular limitations on this. The invention also does not impose any special restrictions on the types of the first and second transparent substrates; they can be any conventional transparent glass known to those skilled in the art for dimming components. This can be ordinary glass such as inorganic glass or plexiglass, such as PC board or PMMA board; it can also be functional glass, such as UV-blocking glass, IR-blocking glass, Low-E glass, tempered glass, or antibacterial glass; or it can be colored glass such as gray glass or brown glass. The dimming film can be selected from conventional dimming films known to those skilled in the art. For example, the dimming film can be selected from at least one of suspended particle dimming film, polymer-dispersed liquid crystal dimming film, and electrochromic dimming film.

[0078] This application also provides a method for preparing the dimming component, comprising the following steps:

[0079] The dimming component is obtained by stacking the layers according to the structure described above, followed by lamination, secondary heating, and cooling.

[0080] During the fabrication of the dimming component, the lamination temperature is 90–120°C and the lamination pressure is 0.1 MPa–1.5 MPa; preferably, the lamination temperature is 100–110°C and the lamination pressure is 0.2 MPa–1.0 MPa.

[0081] POE or TPO films possess excellent moisture barrier properties, but the lamination temperature of dimming components is generally below 120℃. The ideal melting point of POE or TPO films is 135–160℃. Therefore, during the lamination process, the POE or TPO film may not completely melt, resulting in high haze and poor transparency, severely affecting the appearance of the dimming component. This application addresses this issue by employing secondary heating after lamination, thus achieving an ideal low-haze effect. Using independent secondary heating allows the POE or TPO film to be heated to a higher temperature, while the instantaneous softening of the POE or TPO film has no significant impact on the dimming film. This avoids the defect of insufficient melting of the POE or TPO film caused by low-temperature lamination.

[0082] The secondary heating refers to the application of high-frequency induction heating, high-temperature conductive heating, or high-temperature radiant heating to the area of ​​the dimming component using POE or TPO film. Specifically, high-frequency induction heating involves placing a U-shaped metal sheet with a surrounding edge on the surface of the dimming component in the enclosure layer area, then heating the metal sheet with a high-frequency induction heating device, which in turn heats the enclosure layer area. High-temperature conductive heating or high-temperature radiant heating can be achieved by using a U-shaped heating plate to enclose the surface of the dimming component in the enclosure layer area. The secondary heating temperature is 160–260°C and maintained for 10–20 minutes; specifically, the secondary heating temperature is 200–250°C and maintained for 20 seconds to 8 minutes; more specifically, the secondary heating temperature is 210–240°C and maintained for 30 seconds to 4 minutes.

[0083] After the secondary heating, the resulting dimming component is cooled, specifically to below 120°C, to prevent the dimming component from being in a high-temperature state for a long time, which would adversely affect the dimming performance; further, after the secondary heating, the dimming component is rapidly cooled to below 100°C; the rapid cooling of the dimming component can be achieved by placing the dimming component in a low-temperature environment as soon as possible, such as a refrigerator with a temperature below 0°C, or water with a temperature below 50°C.

[0084] This application also provides a method for preparing the dimming component, comprising the following steps:

[0085] The dimming component is obtained by laminating the layers according to the structure of the dimming component described above.

[0086] During the fabrication of the dimming component, the lamination temperature is 90–120°C and the lamination pressure is 0.1 MPa–1.5 MPa; preferably, the lamination temperature is 100–110°C and the lamination pressure is 0.2 MPa–1.0 MPa.

[0087] The first interlayer, the second interlayer, and / or the enclosure layer in the above-mentioned dimming components do not include POE film and TPO film.

[0088] This application also provides the application of the above-mentioned dimming components in glass products; specifically, the glass products are automotive window glass, skylight glass or glass curtain walls.

[0089] To further understand the present invention, the dimming component, its preparation method and its application provided by the present invention will be described in detail below with reference to the embodiments. The scope of protection of the present invention is not limited by the following embodiments.

[0090] High temperature and high humidity stability test method for dimming components: Place a 30cm×30cm dimming component in a high temperature and high humidity test chamber at 85℃ and 85% humidity for 72 hours. Measure the size of the deterioration at the edge of the dimming film of the dimming component after aging with a ruler. The larger the size of the deterioration, the worse the moisture barrier performance of the interlayer.

[0091] Use haze-gard i to test the haze level.

[0092] The transmittance of the dimming component was measured using an LS116 transmittance meter (Shenzhen Linshang Technology Co., Ltd.). When no voltage was applied (off state), the transmittance of the dimming glass was marked as Toff = %, and when the rated voltage was applied (on state), the transmittance of the dimming glass was marked as Ton = %.

[0093] The present invention will be further illustrated below through examples.

[0094] Example 1

[0095] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked in sequence, and a surrounding layer is provided around the dimming film; wherein, the first interlayer and the second interlayer are both PVB, the first transparent substrate and the second transparent substrate are both ordinary white glass, the dimming film is a suspended particle dimming film, the surrounding layer is POE, and the width of the surrounding layer is 3mm.

[0096] The specific method for manufacturing the dimming component is as follows:

[0097] 1) After stacking the layers according to the structure of the dimming component shown in Figure 3, the layers are then laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 min, gradually pressurized to 450 kPa, and delayed for 30 min.

[0098] 2) Use a high-frequency induction heating device to heat the corresponding area of ​​the enclosure layer to 200℃ for 30 seconds; then immediately put it into a 5℃ refrigerator to cool it down, and obtain the dimming component.

[0099] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0100] Example 2

[0101] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, and a surrounding layer is provided around the dimming film; wherein, the first interlayer, the second interlayer, and the surrounding layer are all POE, the width of the surrounding layer is 3mm, the first transparent substrate and the second transparent substrate are both ordinary white glass, and the dimming film is a suspended particle dimming film.

[0102] The specific method for manufacturing the dimming component is as follows:

[0103] 1) After stacking the layers according to the structure of the dimming component shown in Figure 3, the layers are then laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 min, gradually pressurized to 450 kPa, and delayed for 30 min.

[0104] 2) Heat the dimming component in a high-temperature oven at 250°C for 3 minutes; then immediately cool it in 40°C water to obtain the dimming component.

[0105] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0106] Example 3

[0107] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer around the dimming film; wherein, the first interlayer and the second interlayer are both EVA, the surrounding layer is a three-layer concentric structure formed by POE / EVOH / POE composite, which consists of POE, EVOH, and POE from the inside out, and the thickness ratio of the three concentric layers from the inside out is 1:0.5:1.5, the width of the surrounding layer is 3mm, the dimming film is a suspended particle dimming film, and the first transparent substrate and the second transparent substrate are both ordinary white glass;

[0108] The specific method for manufacturing the dimming component is as follows:

[0109] 1) After stacking the layers according to the structure of the dimming component shown in Figure 3, the layers are then laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 min, gradually pressurized to 450 kPa, and delayed for 30 min.

[0110] 2) Use a U-shaped high-temperature conductive heating device to reheat the corresponding area of ​​the enclosure layer to a temperature of 210℃ for 20 seconds; then immediately place it in a 5℃ refrigerator to cool it down, and obtain the dimming component.

[0111] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0112] Example 4

[0113] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer around the dimming film; wherein, the first interlayer, the second interlayer, and the surrounding layer are all three concentric structures formed by POE / EVOH / POE composite, and from the inside out, they are POE, EVOH, and POE respectively, with the thickness ratio of the three concentric structures from the inside out being 1:1.5:1.5, the width of the surrounding layer being 3mm, the dimming film being a suspended particle dimming film, and the first transparent substrate and the second transparent substrate being ordinary white glass;

[0114] The specific method for manufacturing the dimming component is as follows:

[0115] 1) After stacking the layers according to the structure of the dimming component shown in Figure 3, the layers are then laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 min, gradually pressurized to 650 kPa, and delayed for 30 min.

[0116] 2) Heat the dimming component in a high-temperature oven at 250℃ for 4 minutes; then immediately cool it in 40℃ water to obtain the dimming component.

[0117] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0118] Example 5

[0119] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer provided around the dimming film, the first interlayer, and the second interlayer; wherein the first interlayer and the second interlayer are made of EVA, the surrounding layer is made of TPO, the width of the surrounding layer is 5mm, the dimming film is a suspended particle dimming film, and the first transparent substrate and the second transparent substrate are both ordinary white glass;

[0120] The specific method for manufacturing the dimming component is as follows:

[0121] 1) After stacking the layers according to the structure of the dimming component shown in Figure 4, the layers are laminated in an autoclave. The lamination conditions are: temperature 120℃, vacuum for 10 minutes, gradually pressurize to 450kPa, and delay for 30 minutes.

[0122] 2) Use a high-frequency induction heating device to heat the corresponding area of ​​the enclosure layer to 250℃ for 30 seconds; then immediately put it into a 5℃ refrigerator to cool it down, and obtain the dimming component.

[0123] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0124] Example 6

[0125] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer provided around the dimming film, the first interlayer, and the second interlayer; wherein the first interlayer, the second interlayer, and the surrounding layer are all TPO, the width of the surrounding layer is 10mm, the dimming film is a suspended particle dimming film, and the first transparent substrate and the second transparent substrate are both ordinary white glass;

[0126] The specific method for manufacturing the dimming component is as follows:

[0127] 1) After stacking the layers according to the structure of the dimming component shown in Figure 4, the layers are laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 minutes, gradually pressurize to 450kPa, and delay for 30 minutes.

[0128] 2) Heat the dimming component in a high-temperature oven at 250°C for 8 minutes; then immediately place it in a 5°C refrigerator to cool it down, thus obtaining the dimming component.

[0129] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0130] Example 7

[0131] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer around the dimming film; wherein, the first interlayer, the second interlayer, and the surrounding layer are all three concentric structures formed by TPO / EVOH / POE composite, which are TPO, EVOH, and POE from the inside out, respectively, and the thickness ratio of the three concentric structures from the inside out is 1:1.5:3, the width of the surrounding layer is 4mm, the dimming film is a suspended particle dimming film, and the first transparent substrate and the second transparent substrate are both ordinary white glass;

[0132] The specific method for manufacturing the dimming component is as follows:

[0133] 1) After stacking the layers according to the structure of the dimming component shown in Figure 3, the layers are then laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 min, gradually pressurized to 450 kPa, and delayed for 30 min.

[0134] 2) Heat the dimming component in a high-temperature oven at 260℃ for 2 minutes; then immediately place it in a 5℃ refrigerator to cool it down, thus obtaining the dimming component.

[0135] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0136] Example 8

[0137] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer provided around the first interlayer, the dimming film, and the second interlayer; wherein the first interlayer, the second interlayer, and the surrounding layer are all three concentric structures formed by POE / EVOH / TPO composite, with POE, EVOH, and TPO from the inside out, and the thickness ratio of the three concentric structures from the inside out is 1:1.5:4; the width of the surrounding layer is 3mm; the dimming film is a suspended particle dimming film; and the first transparent substrate and the second transparent substrate are both ordinary white glass;

[0138] The specific method for manufacturing the dimming component is as follows:

[0139] 1) After stacking the layers according to the structure of the dimming component shown in Figure 4, the layers are laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 minutes, gradually pressurize to 450kPa, and delay for 30 minutes.

[0140] 2) Heat the dimming component in a high-temperature oven at 200℃ for 5 minutes; then immediately place it in a 5℃ refrigerator to cool it down, thus obtaining the dimming component.

[0141] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0142] Example 9

[0143] Similar to Example 5, except that the enclosure layer is a three-layer concentric structure formed by POE / EVOH / POE composite, which consists of POE, EVOH and POE from the inside out, and the thickness ratio of the three concentric layers from the inside out is 1:1.3:4.

[0144] Example 10

[0145] Same as in Example 1, except that: the enclosure layer is SGP, and step 2 is not performed).

[0146] Example 11

[0147] Same as in Example 2, except that: the first laminated layer, the second laminated layer, and the enclosure layer are all SGP, and step 2 is not performed.

[0148] Example 12

[0149] Similar to Example 7, except that the first interlayer, the second interlayer, and the enclosure layer are all three concentric structures formed by SGP / EVOH / POE composite, with SGP, EVOH, and POE from the inside out, and the thickness ratio of the three concentric structures from the inside out is 1:1.5:3.

[0150] Example 13

[0151] Similar to Example 8, except that: the first interlayer, the second interlayer, and the enclosure layer are all three concentric structures formed by SGP / EVOH / SGP composite, which are SGP, EVOH, and SGP from the inside out, respectively, and the thickness ratio of the three concentric structures from the inside out is 1:1.5:4 (step 2 is not performed).

[0152] Example 14

[0153] Similar to Example 9, except that the enclosure layer is a three-layer concentric structure formed by SGP / EVOH / TPO composite, which consists of SGP, EVOH and TPO from the inside out, and the thickness ratio of the three concentric layers from the inside out is 1:1.3:4.

[0154] Comparative Example 1

[0155] Similar to Example 1, except that the enclosure layer is PVB and the enclosure layer area is not heated again.

[0156] Comparative Example 2

[0157] Similar to Example 1, except that the width of the enclosure layer is 5mm, but no enclosure layer material is placed, and the enclosure layer area is not heated a second time.

[0158] Comparative Example 3

[0159] Similar to Example 1, except that: the first interlayer, the second interlayer, and the enclosure layer are all made of EVA, the width of the enclosure layer is 10mm, and the enclosure layer area is not heated a second time.

[0160] Comparative Example 4

[0161] Similar to Example 1, except that: the first interlayer, the second interlayer, and the enclosure layer are all made of EVA, the width of the enclosure layer is 20mm, and the enclosure layer area is not heated again.

[0162] Comparative Example 5

[0163] Similar to Example 1, except that: the enclosure layer is PVB, the width of the enclosure layer is 25mm, and the enclosure layer area is not heated again.

[0164] Comparative Example 6

[0165] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer around the dimming film; wherein, the first interlayer and the second interlayer are three concentric structures formed by POE / EVOH / TPO composite, which are POE, EVOH, and TPO from the inside out, and the thickness ratio of the three concentric structures from the inside out is 1:1:4.5; the width of the surrounding layer is 3mm, but no surrounding layer material is placed there; the first transparent substrate and the second transparent substrate are both ordinary white glass; and the dimming film is a suspended particle dimming film.

[0166] The specific method for manufacturing the dimming component is as follows:

[0167] 1) After stacking the layers according to the structure of the dimming component shown in Figure 3, the layers are then laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 min, gradually pressurized to 450 kPa, and delayed for 30 min.

[0168] 2) Heat the dimming component in a high-temperature oven at 200℃ for 6 minutes; then immediately place it in a 5℃ refrigerator to cool it down, thus obtaining the dimming component.

[0169] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0170] Comparative Example 7

[0171] The dimming assembly includes a first transparent substrate, a first interlayer, a dimming film, a second interlayer, and a second transparent substrate stacked sequentially, with a surrounding layer around the dimming film; wherein, the first interlayer and the second interlayer are three concentric structures formed by POE / EVOH / TPO composite, and from the inside out they are POE, EVOH, and TPO respectively, with the thickness ratio of the three concentric structures from the inside out being 1:1:4; the width of the surrounding layer is 5mm, but no surrounding layer material is placed there; the first transparent substrate and the second transparent substrate are both ordinary white glass; and the dimming film is a suspended particle dimming film.

[0172] The specific method for manufacturing the dimming component is as follows:

[0173] 1) After stacking the layers according to the structure of the dimming component shown in Figure 3, the layers are then laminated in an autoclave. The lamination conditions are: temperature 110℃, vacuum for 10 min, gradually pressurized to 450 kPa, and delayed for 30 min.

[0174] 2) Heat the dimming component in a high-temperature oven at 200℃ for 6 minutes; immediately place it in a 5℃ refrigerator to cool it down, and you will get the dimming component.

[0175] The haze of the corresponding area of ​​the enclosure layer and the corresponding area of ​​the dimming film in the open state was tested. The size of the edge failure of the dimming film on the enclosure layer side after the high temperature and high humidity test of the dimming component was tested. Detailed parameters and test results are shown in Table 1.

[0176] Comparative Example 8

[0177] Same as Example 4, except that the lamination conditions are: temperature 140°C, vacuum for 10 minutes, gradually pressurized to 650 kPa, and delayed for 30 minutes; there is no secondary heating process.

[0178] Comparative Example 9

[0179] Same as Example 4, except that there is no secondary heating process.

[0180] Table 1. Selection of some components and related performance data of the dimming assembly provided in the embodiments and comparative examples.

[0181] Table 1. Selection of some components and related performance data of the dimming assembly provided in the embodiments and comparative examples (continued from Table 1) Note: X indicates that it is not applicable.

[0182] As can be seen from the changes in haze in the corresponding areas of the enclosure layer before and after secondary heating in Examples 1 to 9 in Table 1, secondary heating treatment is necessary for POE, TPO, and three-layer concentric structure materials formed by POE or TPO and EVOH. Without secondary heating, the dimming components prepared by these materials at lower lamination temperatures have a large haze. As described in Comparative Example 9, due to the large haze, the on-state transmittance Ton of the dimming component is only 21.8%.

[0183] In Examples 10, 11, and 13 of Table 1, since SGP has a low melting point, which is below the lamination temperature, a secondary heating process is not required. However, in Examples 12 and 14, since the composite three-layer structure material contains high-melting-point POE and / or TPO, secondary heating treatment is necessary. The dimming components prepared with this type of material at a lower lamination temperature have a large haze. For example, in Example 12, the haze decreased from 25.7% to 4.1% after secondary heating.

[0184] As can be seen from the comparison between Example 1 and Comparative Example 1, the width of the enclosure layer is 3mm. The water vapor barrier performance of POE is better than that of PVB. The dimming component prepared in Example 1 has an edge failure size of 1.0mm after high temperature and high humidity test, while that of Comparative Example 1 reaches 5.0mm.

[0185] As can be seen from the comparison between Example 10 and Comparative Example 1, the width of the enclosure layer is 3mm. The enclosure layer using SGP has better water vapor barrier performance than PVB. The dimming component prepared in Example 10 has an edge failure size of 0.5mm after the high temperature and high humidity test, while the Comparative Example 1 reaches 5.0mm.

[0186] As can be seen from the comparison between Example 1 and Comparative Example 5, when the enclosure layer of the dimming component prepared in Comparative Example 5 is made of PVB, the width of the enclosure layer needs to reach 25mm to achieve the same water vapor barrier performance as the enclosure layer width of 3mm in Example 1 of the present invention. Therefore, by using the method of the present invention, the width of the enclosure layer can be significantly reduced while achieving the same water vapor barrier performance, and the area around the dimming component without dimming function can be significantly reduced.

[0187] As can be seen from the comparison between Example 10 and Comparative Example 5, when the barrier layer in the dimming component prepared in Comparative Example 5 is made of PVB, the width of the barrier layer reaches 25mm to be close to the water vapor barrier performance of the barrier layer width of 3mm in Example 10 of the present invention. Therefore, by using the method of the present invention, the width of the barrier layer can be greatly reduced while achieving the same water vapor barrier performance, and the area around the dimming component without dimming function can be significantly reduced.

[0188] As can be seen from the comparison between Example 8 and Comparative Example 6, the presence or absence of a barrier layer has a significant impact on the water vapor barrier performance. The dimming component prepared in Example 8 has a barrier layer, and the edge failure size of the dimming film after the high temperature and high humidity test is <0.5mm, while the dimming component prepared in Comparative Example 6 does not have a barrier layer, and the edge failure size of the dimming film after the high temperature and high humidity test reaches 2.0mm.

[0189] As can be seen from the comparison between Example 4 and Comparative Example 8, if the lamination temperature is increased to 140°C in one go, although the haze of the enclosure layer can be reduced to 4.8%, the Ton% also drops to 35.4%. That is, the use of high-temperature lamination in one go has a great negative impact on the dimming performance of the dimming component; this proves the necessity of performing a secondary heating process step.

[0190] As can be seen from the comparison between Example 4 and Comparative Example 9, if POE / EVOH / POE material is used but no secondary heating is performed, the water vapor barrier performance of the dimming component is inferior to the corresponding product that has undergone secondary heating, but it is still better than the dimming component of Comparative Example 1 that uses a PVB enclosure layer. Furthermore, since no secondary heating was performed during the preparation of the dimming component in Comparative Example 9, the dimming component has high haze, resulting in low open-state transmittance, with a Ton of only 21.8%, which also proves the necessity of performing the secondary heating process.

[0191] As can be seen from the comparison between Example 9 and Example 5, the barrier layer of Example 9 is made of a POE / EVOH / POE three-layer composite material, and the water vapor barrier performance of the dimming component is better than that of Example 5. Of course, the barrier layer is made of TPO material, and the water vapor barrier performance of the dimming component is far better than that of the barrier layer made of PVB or EVA material. The scheme of setting the barrier layer of POE / EVOH / POE three-layer composite material is a preferred scheme of this application.

[0192] As can be seen from the comparison between Example 14 and Example 5, the enclosure layer of Example 14 is made of a material with a three-layer composite structure of SGP / EVOH / TPO, and the water vapor barrier performance of the dimming component is better than that of Example 5.

[0193] In summary, the present invention provides a dimming component that incorporates SGP, POE, or TPO material as a barrier layer. POE or TPO material is used as the barrier layer and undergoes secondary heating, resulting in a dimming component with good water vapor barrier performance and a low-haze appearance. Similarly, SGP material is used as the barrier layer, achieving the same good water vapor barrier performance and low-haze appearance.

[0194] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0195] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dimming component, characterized in that, include: A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate; A first adhesive layer is disposed between the first transparent substrate and the dimming film, and a second adhesive layer is disposed between the second transparent substrate and the dimming film; A barrier layer is disposed around at least a portion of the dimming film; The enclosure layer includes at least one of POE film and TPO film.

2. A dimming component, characterized in that, include: A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate; A first adhesive layer is disposed between the first transparent substrate and the dimming film, and a second adhesive layer is disposed between the second transparent substrate and the dimming film; A barrier layer is disposed around at least a portion of the dimming film; The enclosure layer includes at least one of SGP film, POE film and TPO film.

3. The dimming assembly according to claim 1 or 2, characterized in that, At least a portion of the first laminated layer is provided with a retaining layer around its perimeter, and / or at least a portion of the second laminated layer is provided with a retaining layer around its perimeter.

4. The dimming assembly according to claim 1 or 2, characterized in that, The first adhesive layer and / or the second adhesive layer include at least one of POE film and TPO film.

5. The dimming assembly according to claim 1, 2, or 4, characterized in that, The first and / or second adhesive layers are a composite structure of three adhesive films, which, from the inside out, are an inner POE film or an inner TPO film, a middle EVOH film, and an outer POE film or an outer TPO film.

6. The dimming assembly according to claim 1 or 2, characterized in that, The first adhesive layer and / or the second adhesive layer include at least one of SGP film, POE film and TPO film.

7. The dimming assembly according to claim 1, 2, or 6, characterized in that, The first and / or second adhesive layers are a composite structure of three adhesive films, which, from the inside out, are an inner POE film, an inner TPO film or an inner SGP film, a middle EVOH film, and an outer POE film, an outer TPO film or an outer SGP film.

8. The dimming assembly according to claim 1 or 2, characterized in that, The enclosure layer is a composite structure of three layers of adhesive film. Based on the dimming film end, from the inside out, it consists of an inner POE adhesive film or an inner TPO adhesive film, a middle EVOH adhesive film, and an outer POE adhesive film or an outer TPO adhesive film.

9. The dimming assembly according to claim 1 or 2, characterized in that, The enclosure layer is a composite structure of three layers of adhesive film. Based on the dimming film end, from the inside out, they are an inner POE adhesive film, an inner TPO adhesive film or an inner SGP adhesive film, a middle EVOH adhesive film, and an outer POE adhesive film, an outer TPO adhesive film or an outer SGP adhesive film.

10. The dimming component according to claim 3, characterized in that, The enclosure layer is a composite structure of three adhesive films, with the first interlayer as the base, and from the inside out, it consists of an inner POE film or an inner TPO film, a middle EVOH film, and an outer POE film or an outer TPO film; and / or, the enclosure layer is a composite structure of three adhesive films, with the second interlayer as the base, and from the inside out, it consists of an inner POE film or an inner TPO film, a middle EVOH film, and an outer POE film or an outer TPO film.

11. The dimming component according to claim 3, characterized in that, The enclosure layer is a composite structure of three adhesive films, with the first interlayer as the base, and from the inside out, the layers are an inner POE film, an inner TPO film or an inner SGP film, a middle EVOH film, and an outer POE film, an outer TPO film or an outer SGP film; and / or, the enclosure layer is a composite structure of three adhesive films, with the second interlayer as the base, and from the inside out, the layers are an inner POE film, an inner TPO film or an inner SGP film, a middle EVOH film, and an outer POE film, an outer TPO film or an outer SGP film.

12. The dimming assembly according to any one of claims 5 to 11, characterized in that, The composite structure of the three-layer adhesive film is prepared by a co-extrusion composite process.

13. The dimming assembly according to any one of claims 5 to 11, characterized in that, The thickness ratio of the inner layer, the middle layer, and the outer layer is 1:(0.5-1.5):(1-5).

14. The dimming assembly according to claim 1 or 2, characterized in that, The cross-section of the enclosure layer can be either regular or irregular in shape.

15. The dimming assembly according to claim 1 or 2, characterized in that, The width of the enclosure layer is 3mm to 20mm.

16. The dimming assembly according to claim 1 or 2, characterized in that, The haze of the dimming components in the corresponding area of ​​the enclosure layer is less than 10%.

17. The dimming assembly according to claim 1 or 2, characterized in that, The first transparent substrate and / or the second transparent substrate are selected from at least one of transparent glass plate and transparent plastic sheet.

18. The dimming assembly according to claim 1 or 2, characterized in that, The dimming film is selected from at least one of suspended particle dimming film, polymer dispersed liquid crystal dimming film, and electrochromic dimming film.

19. A method for preparing a dimming component according to any one of claims 1 to 18, comprising the following steps: The dimming component according to any one of claims 1 to 18 is obtained by laminating the layers together, then heating it a second time, and finally cooling it.

20. A method for preparing a dimming component according to any one of claims 1 to 18, comprising the following steps: The dimming component is obtained by laminating the layers according to the structure of any one of claims 1 to 18.

21. The preparation method according to claim 19 or 20, characterized in that, The temperature for the lamination process is 90–120°C.

22. The preparation method according to claim 19, characterized in that, The secondary heating temperature is 160-260℃, and the time is 10s-20min; the secondary heating is used to heat the area using POE film or PTO film, and the secondary heating is carried out by high-frequency induction heating, high-temperature conduction heating or high-temperature radiation heating; the cooling is carried out to below 120℃.

23. The application of a dimming component in glass products, wherein the dimming component is the dimming component according to any one of claims 1 to 18 or the dimming component prepared by the preparation method according to any one of claims 19 to 22.

24. The application according to claim 23, characterized in that, The glass products are automotive window glass, panoramic glass, or glass curtain walls.

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