Vehicle interior panel and vehicle

Abstract

The application discloses a vehicle interior panel and a vehicle, and belongs to the technical field of vehicle parts. The vehicle interior panel comprises a first composite layer, an aluminum honeycomb panel and a second composite layer arranged in sequence, the first composite layer comprises a first chopped strand mat and a first needle-punched non-woven fabric arranged in sequence on a first side of the aluminum honeycomb panel, and the second composite layer comprises a second chopped strand mat, a satin glass cloth and a second needle-punched non-woven fabric arranged in sequence on a second side of the aluminum honeycomb panel. The first composite layer is bonded to the first side of the aluminum honeycomb panel through a first flame-retardant polyurethane foaming layer, and the second composite layer is bonded to the second side of the aluminum honeycomb panel through a second flame-retardant polyurethane foaming layer. The vehicle interior panel has good flame retardance, sound insulation and surface quality.

Description

Technical Field

[0001] This application relates to the field of vehicle parts technology, and more specifically, to a vehicle interior panel and a vehicle. Background Technology

[0002] With the development of high-speed rail technology, higher requirements have been placed on the flame retardant performance, sound insulation performance, and surface quality of interior panels such as the roof or floor of high-speed trains. Therefore, it is necessary to provide a vehicle interior panel with good flame retardant effect, sound insulation effect, and surface quality. Utility Model Content

[0003] In view of the above-mentioned shortcomings, this application provides a vehicle interior panel and a vehicle to improve the flame retardancy, sound insulation and surface quality of the vehicle interior panel.

[0004] This application is implemented as follows:

[0005] In a first aspect, an example of this application provides a vehicle interior panel, comprising a first composite layer, an aluminum honeycomb panel, and a second composite layer disposed sequentially. The first composite layer comprises a first chopped strand mat and a first needle-punched nonwoven fabric disposed sequentially on a first side of the aluminum honeycomb panel, and the second composite layer comprises a second chopped strand mat, a satin-textured fiberglass cloth, and a second needle-punched nonwoven fabric disposed sequentially on a second side of the aluminum honeycomb panel. The first composite layer is bonded to the first side of the aluminum honeycomb panel via a first flame-retardant polyurethane foam layer, and the second composite layer is bonded to the second side of the aluminum honeycomb panel via a second flame-retardant polyurethane foam layer.

[0006] In the above process, aluminum honeycomb panels are lightweight and highly flame-retardant. Combined with a high-density flame-retardant polyurethane foam layer, they improve the overall flame retardancy of the vehicle interior panels. Needle-punched nonwoven fabric, with its good extensibility and high basis weight, is incorporated into the second composite layer with a smooth, high-density satin-textured fiberglass cloth. This not only improves the overall sound insulation performance of the vehicle interior panels but also conceals the imprints of the aluminum honeycomb panels or embedded parts within the panels, enhancing the surface quality. Placing the second needle-punched nonwoven fabric on the side of the satin-textured fiberglass cloth opposite to the second chopped strand mat mitigates the wrinkling problem inherent in the satin-textured fiberglass cloth. Furthermore, the porous structure of the second needle-punched nonwoven fabric, located on the outer layer, effectively absorbs sound, further enhancing the sound insulation of the vehicle interior panels. In addition, the vehicle interior panel provided in this application embodiment only has satin fiberglass cloth in the second composite layer. The second composite layer is the surface layer of the vehicle interior panel, and the first composite layer is the bottom layer. Under high temperature conditions, the gas inside the honeycomb structure is more likely to be discharged from the first composite layer, reducing the impact of exhaust on the surface quality of the second composite layer, which is the surface layer.

[0007] In conjunction with the first aspect, in one optional embodiment, the basis weight of the first needle-punched nonwoven fabric is 50 g / m². 2 ~120g / m2 And / or, the basis weight of the second needle-punched nonwoven fabric is 50 g / m². 2 ~120g / m 2 .

[0008] In the above implementation process, a weight of 50g / m² is set in the vehicle interior trim panel. 2 ~120g / m 2 Needle-punched nonwoven fabric can improve the ductility of vehicle interior panels. Furthermore, appropriately weighted needle-punched nonwoven fabric not only helps to conceal defects such as indentations in aluminum honeycomb panels and improve surface quality, but also further enhances the sound insulation performance of vehicle interior panels.

[0009] In conjunction with the first aspect, in one optional embodiment, the satin-weave fiberglass cloth has a tex of 50-300 and a basis weight of 200 g / m². 2 ~500g / m 2 .

[0010] In the above implementation process, the tex value is set to 50~300 and the weight is set to 200g / m² in the vehicle interior trim panel. 2 ~500g / m 2 The satin-textured fiberglass cloth can improve the strength of vehicle interior panels, reduce deformation, and also cover the embossing of aluminum honeycomb panels, improving surface quality.

[0011] In conjunction with the first aspect, in one optional embodiment, the aluminum honeycomb panel has a thickness of 3mm to 10mm, a pore size of 4mm to 8mm, and a basis weight of 60g / m³. 2 ~160g / m 2 .

[0012] In the above implementation process, a thickness of 3mm~10mm, a pore size of 4mm~8mm, and a basis weight of 60g / m³ are selected. 2 ~160g / m 2 The aluminum honeycomb panels can improve the flame retardancy of vehicle interior panels while ensuring the lightweight requirements of the interior panels.

[0013] In conjunction with the first aspect, in one optional embodiment, the thickness of the first composite layer is 0.3~0.5mm, the thickness of the second composite layer is 0.4~0.7mm, and the thickness of the second composite layer is greater than the thickness of the first composite layer.

[0014] In the above implementation process, the second composite layer serves as the surface layer. The composite layer has an appropriate thickness, and the thickness of the second composite layer is greater than that of the first composite layer. This helps the gas to be more inclined to be discharged from the first composite layer, which can improve the surface quality of the vehicle interior panel surface layer while meeting the lightweight requirements of the vehicle interior panel.

[0015] In conjunction with the first aspect, in one alternative embodiment, a first flame-retardant polyurethane foam layer is impregnated with a first needle-punched nonwoven fabric and a first chopped strand mat. And / or, a second flame-retardant polyurethane foam layer is impregnated with a second chopped strand mat, a satin-textured fiberglass cloth, and a second needle-punched nonwoven fabric.

[0016] In the above process, the flame-retardant polyurethane foam layer permeates the first needle-punched nonwoven fabric, the first chopped strand mat, the second chopped strand mat, the satin fiberglass cloth, and the second needle-punched nonwoven fabric, which not only improves the flame retardancy of the vehicle interior panel, but also improves the bonding strength and peel strength of the vehicle interior panel.

[0017] In conjunction with the first aspect, in one alternative embodiment, at least a portion of the first flame-retardant polyurethane foam layer extends into the honeycomb pores on the first side of the aluminum honeycomb panel. And / or, at least a portion of the second flame-retardant polyurethane foam layer extends into the honeycomb pores on the second side of the aluminum honeycomb panel.

[0018] In the above process, at least a portion of the flame-retardant polyurethane foam layer extends into the honeycomb pores of the aluminum honeycomb panel, which can improve the bonding strength between the aluminum honeycomb panel and the composite layer and improve the overall peel strength of the vehicle interior panel.

[0019] In conjunction with the first aspect, in one alternative embodiment, the vehicle interior panel further includes a PVC skin layer bonded to the side of the second composite layer opposite to the aluminum honeycomb panel.

[0020] In the above process, bonding a PVC skin layer to the surface of the second composite layer can improve the surface smoothness of the vehicle interior panels and enhance user comfort.

[0021] In conjunction with the first aspect, in one alternative embodiment, a paint layer is also provided on the side of the second composite layer facing away from the aluminum honeycomb panel.

[0022] In the above implementation process, a paint layer is set on the side of the second composite layer away from the aluminum honeycomb panel, which can improve the surface smoothness of the vehicle interior panel and improve the user's comfort.

[0023] In a second aspect, an example of this application provides a vehicle in which at least a portion of the interior wall of the vehicle is bonded to a first composite layer of the vehicle interior panel provided in the first aspect.

[0024] In the above implementation process, the vehicle interior panel provided in the first aspect of the present application is provided on the interior wall of the vehicle cabin. The vehicle interior panel has good flame retardancy, sound insulation and surface quality, which can improve the safety of the vehicle and the comfort of use. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a structural schematic diagram of the first type of vehicle interior panel provided in the embodiments of this application;

[0027] Figure 2 This is a structural schematic diagram of a second type of vehicle interior panel provided in an embodiment of this application;

[0028] Figure 3 This is a structural schematic diagram of a third type of vehicle interior panel provided in an embodiment of this application.

[0029] Icons: 1-Vehicle interior panel; 10-Aluminum honeycomb panel; 20-First composite layer; 21-First chopped strand mat; 22-First needle-punched nonwoven fabric; 30-Second composite layer; 31-Second chopped strand mat; 32-Satin fiberglass cloth; 33-Second needle-punched nonwoven fabric; 41-PVC outer layer; 42-Paint layer. Detailed Implementation

[0030] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] Currently, commonly used vehicle interior panels employ a paper honeycomb core structure, with fiberglass cloth laid on the surface of the paper honeycomb, and epoxy foam material sprayed onto the fiberglass cloth surface. However, with the development of high-speed rail technology, higher requirements have been placed on the flame retardant performance, sound insulation performance, and surface quality of interior panels such as the roof or floor of high-speed trains. Current vehicle interior panels often suffer from poor flame retardant performance, inadequate sound insulation, and poor surface quality.

[0035] Therefore, it is necessary to provide a vehicle interior panel with good flame retardancy, sound insulation and surface quality.

[0036] Therefore, this application further improves the vehicle interior trim panels, thereby enhancing their flame retardant effect, sound insulation effect, and surface quality to a certain extent. To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0037] Please see Figure 1 This application provides a vehicle interior panel 1, comprising a first composite layer 20, an aluminum honeycomb panel 10, and a second composite layer 30 sequentially disposed. The first composite layer 20 includes a first chopped strand mat 21 and a first needle-punched nonwoven fabric 22 sequentially disposed on a first side of the aluminum honeycomb panel 10. The second composite layer 30 includes a second chopped strand mat 31, a satin-textured fiberglass cloth 32, and a second needle-punched nonwoven fabric 33 sequentially disposed on a second side of the aluminum honeycomb panel 10. The first composite layer 20 is bonded to the first side of the aluminum honeycomb panel 10 via a first flame-retardant polyurethane foam layer (not shown in the figure), and the second composite layer 30 is bonded to the second side of the aluminum honeycomb panel 10 via a second flame-retardant polyurethane foam layer (not shown in the figure).

[0038] In this embodiment, a first composite layer 20 and a second composite layer 30 are respectively provided on both sides of the aluminum honeycomb panel 10. The first composite layer 20 is formed by bonding a first chopped strand mat 21 and a first needle-punched nonwoven fabric 22 through a first flame-retardant polyurethane foam layer. The second composite layer 30 is formed by bonding a second chopped strand mat 31, a satin fiberglass cloth 32, and a second needle-punched nonwoven fabric 33 through a second flame-retardant polyurethane foam layer. The first flame-retardant polyurethane foam layer and the second flame-retardant foam layer can improve the bonding strength between the aluminum honeycomb panel 10 and the first composite layer 20 and the second composite layer 30, and improve the peel force of the vehicle interior panel 1.

[0039] Aluminum honeycomb panel 10 is lightweight and highly flame-retardant. Combined with a high-density flame-retardant polyurethane foam layer, it can improve the overall flame retardancy of vehicle interior panel 1.

[0040] This application does not limit the specific structure of the aluminum honeycomb panel 10. In some embodiments, the thickness of the aluminum honeycomb panel 10 can be 3 mm to 10 mm. An aluminum honeycomb panel 10 of suitable thickness can reduce the weight of the vehicle interior panel 1 while ensuring its flame-retardant performance, and can also improve the sound insulation performance of the vehicle interior panel 1.

[0041] As an example, the thickness of the aluminum honeycomb panel 10 can be one of 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm or any combination thereof.

[0042] For example, the thickness of the aluminum honeycomb panel 10 can be 3 mm to 9 mm; for another example, the thickness of the aluminum honeycomb panel 10 can be 4 mm to 8 mm; for yet another example, the thickness of the aluminum honeycomb panel 10 can be 5 mm to 7 mm.

[0043] Furthermore, in some embodiments, the aperture of the aluminum honeycomb panel 10 is 4 mm to 8 mm. The aluminum honeycomb panel 10 has a suitable aperture, which can disperse sound wave energy and reduce noise propagation, especially reducing the propagation of high-frequency wind noise, while ensuring the structural strength of the aluminum honeycomb panel 10.

[0044] As an example, the aperture of the aluminum honeycomb panel 10 can be one of 4 mm, 5 mm, 6 mm, 7 mm or 8 mm or any combination thereof.

[0045] For example, the aperture of the aluminum honeycomb panel 10 can be 4 mm to 7 mm; for another example, the aperture of the aluminum honeycomb panel 10 can be 4 mm to 6 mm; for yet another example, the aperture of the aluminum honeycomb panel 10 can be 5 mm to 6 mm.

[0046] In some embodiments, the weight of the aluminum honeycomb panel 10 is 60 g / m². 2 ~160 g / m 2 An appropriate weight can improve the sound insulation and flame retardant properties of the vehicle interior panel 1 while taking into account the lightweight requirements of the vehicle interior panel 1, and can also increase the strength of the vehicle interior panel 1.

[0047] The weight of aluminum honeycomb panel 10 can be selected from 50 g / m². 2 60 g / m 2 70 g / m 2 80 g / m 2 90 g / m 2 100 g / m 2 110g / m 2 120 g / m 2 130 g / m 2 140 g / m 2150 g / m 2 Or 160 g / m 2 The range between one or any two of them.

[0048] For example, the basis weight of aluminum honeycomb panel 10 can be 65 g / m². 2 ~155 g / m 2 For example, the weight of aluminum honeycomb panel 10 can be 75 g / m². 2 ~145 g / m 2 For example, the weight of aluminum honeycomb panel 10 can be 85 g / m². 2 ~135 g / m 2 For example, the weight of aluminum honeycomb panel 10 can be 95 g / m². 2 ~125 g / m 2 For example, the basis weight of aluminum honeycomb panel 10 can be 105 g / m². 2 ~115g / m 2 .

[0049] A layer of chopped strand mat is provided on both sides of the aluminum honeycomb panel 10. The chopped strand mat can serve as a carrier for the flame-retardant polyurethane foam material, thereby improving the connection strength between the flame-retardant polyurethane foam layer and the aluminum honeycomb panel 10.

[0050] The second composite layer 30 serves as the surface layer of the vehicle interior panel 1. The needle-punched nonwoven fabric has the characteristics of good extensibility and high basis weight. Combined with the high-density satin-textured fiberglass cloth 32 with a smooth and flat surface, it can not only improve the overall sound insulation performance of the vehicle interior panel 1, but also cover the imprints of the aluminum honeycomb panel 10 or the embedded parts inside the vehicle interior panel 1, thereby improving the surface quality of the surface layer of the vehicle interior panel 1.

[0051] If spunlace nonwoven fabric is used instead of needle-punched nonwoven fabric, the spunlace nonwoven fabric has poor extensibility and is thinner, making it less effective at concealing appearance defects of the vehicle interior panel 1 after pressing and molding. It is also prone to cracking when applied to the vehicle roof or floor. Compared to spunlace nonwoven fabric, needle-punched nonwoven fabric can further improve the sound insulation performance of the vehicle interior panel 1, cover indentations or embedded part indentations in the aluminum honeycomb panel 10, and improve surface quality.

[0052] This application does not limit the specific structure of the needle-punched nonwoven fabric. In some embodiments, the basis weight of both the first needle-punched nonwoven fabric 22 and the second needle-punched nonwoven fabric 33 can be 50 g / m². 2 ~120 g / m 2 .

[0053] In some embodiments, the basis weight of the first needle-punched nonwoven fabric 22 and the second needle-punched nonwoven fabric 33 can be individually selected from 50 g / m². 2 60 g / m 2 70 g / m2 80 g / m 2 90 g / m 2 100 g / m 2 110g / m 2 120 g / m 2 The range between one or any two of them.

[0054] For example, the basis weight of the first needle-punched nonwoven fabric 22 and the second needle-punched nonwoven fabric 33 can be 65 g / m². 2 ~115 g / m 2 For example, the weight of aluminum honeycomb panel 10 can be 75 g / m². 2 ~105 g / m 2 For example, the weight of aluminum honeycomb panel 10 can be 85 g / m². 2 ~95 g / m 2 .

[0055] This application does not limit the basis weight of the first needle-punched nonwoven fabric 22 to be the same as that of the second needle-punched nonwoven fabric 33. In some embodiments, the basis weight of the first needle-punched nonwoven fabric 22 is different from that of the second needle-punched nonwoven fabric 33. For example, the basis weight of the first needle-punched nonwoven fabric 22 is 60 g / m². 2 ~75 g / m 2 The basis weight of the second needle-punched nonwoven fabric 33 is 80 g / m². 2 ~85 g / m 2 .

[0056] In the second composite layer 30, a satin-textured fiberglass cloth 32 is disposed between the second chopped strand mat 31 and the second needle-punched nonwoven fabric 33. The satin-textured fiberglass cloth 32 has a certain strength, which can improve the strength of the vehicle interior panel 1. Furthermore, the satin-textured fiberglass cloth has high surface flatness and areal density, which can improve the overall sound insulation performance of the vehicle interior panel 1, and can also cover the imprints of the aluminum honeycomb panel 10 or the embedded parts inside the vehicle interior panel 1, thereby improving the surface quality of the vehicle interior panel 1. In addition, the satin-textured fiberglass cloth 32 also has good resin wetting properties, which can further improve the bonding strength of the second composite layer 30.

[0057] This application does not limit the specific structure of the satin-textured fiberglass cloth 32. In some embodiments, the tex of the satin-textured fiberglass cloth 32 is 50 to 300. The satin-textured fiberglass cloth 32 has a suitable linear density, which can improve the surface quality of the vehicle interior panel 1.

[0058] As an example, the tex of the satin fiberglass cloth 32 can be one of or a range between any two of the following: 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, or 300.

[0059] For example, the tex of satin fiberglass cloth 32 can be 55~295; for example, the tex of satin fiberglass cloth 32 can be 75~275; for example, the tex of satin fiberglass cloth 32 can be 95~255; for example, the tex of satin fiberglass cloth 32 can be 115~235; for example, the tex of satin fiberglass cloth 32 can be 135~215; for example, the tex of satin fiberglass cloth 32 can be 155~195.

[0060] In some embodiments, the basis weight of the satin-textured fiberglass cloth 32 is 200 g / m². 2 ~500 g / m 2 The appropriate weight of satin fiberglass cloth 32 can further improve the surface quality of the vehicle interior panel 1.

[0061] As an example, the basis weight of satin-textured fiberglass cloth 32 can be 200 g / m². 2 250 g / m 2 300 g / m 2 350 g / m 2 400 g / m 2 450 g / m 2 Or 500 g / m 2 The range between one or any two of them.

[0062] In this embodiment, the second needle-punched nonwoven fabric 33 is disposed on the side of the satin fiberglass cloth 32 away from the second chopped strand mat 31, which can improve the problem that the satin fiberglass cloth 32 is prone to wrinkles. Moreover, the second needle-punched nonwoven fabric 33 with a porous structure is located on the outer layer, which can effectively absorb sound and further improve the sound insulation effect of the vehicle interior panel 1.

[0063] In addition, the vehicle interior panel 1 provided in this application embodiment only provides satin fiberglass cloth 32 in the second composite layer 30, and does not provide satin fiberglass cloth 32 in the first composite layer 20. The second composite layer 30 is the surface layer of the vehicle interior panel 1, and the first composite layer 20 is the bottom layer. Under high temperature conditions, the gas inside the honeycomb structure can be more inclined to be discharged from the first composite layer 20, thereby reducing the impact of exhaust on the surface quality of the second composite layer 30, which is the surface layer.

[0064] This application does not limit the specific materials of the first and second flame-retardant polyurethane foam layers. In some embodiments, the materials of the first and second flame-retardant polyurethane foam layers can be polyurethane of model CE 3532 / 301 / 1 CA from BASF Polyurethanes Co., Ltd. The aforementioned flame-retardant polyurethane has high density, good flame-retardant properties, and good toughness, which not only improves the flame retardancy and sound insulation of the vehicle interior panel 1, but also improves the peel strength of the vehicle interior panel 1.

[0065] The first composite layer 20 and the second composite layer 30 in the vehicle interior panel 1 provided in this application are both bonded to both sides of the aluminum honeycomb panel 10 using polyurethane foaming technology.

[0066] For example, when preparing the first composite layer 20, the aluminum honeycomb panel 10 is placed in a mold, and the first chopped strand mat 21 and the first needle-punched nonwoven fabric 22 are sequentially laid on the first side of the aluminum honeycomb panel 10. Then, the A component (polyol blend) and B component (isocyanate) of polyurethane of model CE 3532 / 301 / 1 CA are mixed in a certain ratio, the mixture is sprayed onto the laid material, and then pressed and cured to form the first composite layer 20 bonded to the first side of the aluminum honeycomb panel 10. For example, the mixing ratio of component A and component B is 1:1.35.

[0067] For example, when preparing the second composite layer 30, the aluminum honeycomb panel 10 with the first composite layer 20 bonded to it is placed in a mold, and the second chopped strand mat 31, the satin fiberglass cloth 32 and the second needle-punched nonwoven fabric 33 are sequentially laid on the second side of the aluminum honeycomb panel 10. The mixture of polyurethane raw materials is sprayed onto the laid materials, and then pressed and cured to form the second composite layer 30 bonded to the second side of the aluminum honeycomb panel 10.

[0068] In some embodiments, in the first composite layer 20, the first flame-retardant polyurethane foam layer is permeated with the first needle-punched nonwoven fabric 22 and the first chopped strand mat 21.

[0069] Furthermore, in some embodiments, at least a portion of the first flame-retardant polyurethane foam layer extends into the honeycomb pores on the first side of the aluminum honeycomb panel 10 to improve the bonding strength between the first composite layer 20 and the aluminum honeycomb panel 10.

[0070] Furthermore, in some embodiments, at least a portion of the first flame-retardant polyurethane foam layer covers the side of the first needle-punched nonwoven fabric 22 opposite to the first chopped strand mat 21.

[0071] In some embodiments, the second flame-retardant polyurethane foam layer is impregnated with the second chopped strand mat 31, the satin fiberglass cloth 32, and the second needle-punched nonwoven fabric 33, which can improve the strength of the second composite layer 30.

[0072] Furthermore, in some embodiments, at least a portion of the second flame-retardant polyurethane foam layer extends into the honeycomb holes on the second side of the aluminum honeycomb panel 10, which can further improve the bonding strength between the aluminum honeycomb panel 10 and the second composite layer 30.

[0073] Furthermore, at least a portion of the second flame-retardant polyurethane foam layer covers the side of the second needle-punched nonwoven fabric 33 facing away from the satin fiberglass fabric 32.

[0074] In some embodiments, the thickness of the second composite layer 30 is greater than the thickness of the first composite layer 20, which facilitates the discharge of gas from the first composite layer 20 and reduces the impact of exhaust gas on the surface quality of the second composite layer 30.

[0075] In some embodiments, the thickness of the first composite layer 20 is 0.3~0.5 mm, and the thickness of the second composite layer 30 is 0.4~0.7 mm.

[0076] As an example, the thickness of the first composite layer 20 can be one of 0.3 mm, 0.4 mm, or 0.5 mm, or any combination thereof, and the thickness of the second composite layer 30 can be one of 0.4 mm, 0.5 mm, 0.6 mm, or 0.5 mm, or any combination thereof.

[0077] For example, the thickness of the first composite layer 20 can be 0.4 mm, and the thickness of the second composite layer 30 can be 0.6 mm.

[0078] Furthermore, in some embodiments, the areal density of the second composite layer 30 is greater than that of the first composite layer 20, which helps the gas to be more inclined to be discharged from the first composite layer 20, thereby further reducing the impact of exhaust gas on the second composite layer 30. Moreover, the greater areal density of the second composite layer 30 compared to the first composite layer 20 can improve the surface quality of the second composite layer 30 while ensuring the lightweight requirements of the vehicle interior panel 1, and the second composite layer 30 can effectively conceal indentations of the aluminum honeycomb panel 10 or other embedded parts.

[0079] To further enhance user comfort, in some embodiments, please refer to Figure 2 A PVC skin layer 41 can be provided on the surface of the second composite layer 30, which serves as the surface layer. Alternatively, please refer to... Figure 3 In some other embodiments, a paint layer 42 may be provided on the surface of the second composite layer 30, which serves as the surface layer.

[0080] The embodiments of this application do not limit the specific shape of the vehicle interior panel 1, and can be adjusted accordingly based on the shape of the vehicle cabin or the user's needs. For example, when the vehicle interior panel 1 is applied to the floor of the vehicle, the shape of the vehicle interior panel 1 can be flat. As another example, when the vehicle interior panel 1 is applied to the roof of the vehicle, the shape of the vehicle interior panel 1 is etched into an arc shape.

[0081] This application embodiment also provides a vehicle interior panel 1 prepared by the following method: a panel with a thickness of 8 mm, a hole diameter of 4 mm, and a weight of 90 g / m² is prepared. 2 An aluminum honeycomb panel 10 is placed in a mold. A first chopped strand mat 21 and a first needle-punched nonwoven fabric 22 are sequentially laid on the first side of the aluminum honeycomb panel 10, and a second chopped strand mat 31, a satin-textured fiberglass cloth 32, and a second needle-punched nonwoven fabric 33 are laid on the second side. The basis weight of the first needle-punched nonwoven fabric 22 and the second needle-punched nonwoven fabric 33 is 50 g / m². 2 The satin-textured fiberglass cloth 32 has a tex of 60 and a basis weight of 200 g / m². 2 At room temperature, the A and B components of CE 3532 / 301 / 1 CA polyurethane from BASF Polyurethanes Co., Ltd. in Shanghai were mixed in a ratio of 1:1.35, sprayed onto the structure laid in the mold at 100°C, pressed, and cured to form the vehicle interior panel 1.

[0082] Furthermore, this application embodiment also provides a vehicle (not shown in the figure). This application does not limit the specific type of vehicle. In some embodiments, the vehicle can be a car, train, subway, or high-speed rail, etc. As an example, the vehicle interior panel 1 provided in this application embodiment can be applied to the roof of a high-speed rail.

[0083] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle interior panel, characterized in that, The assembly includes a first composite layer, an aluminum honeycomb panel, and a second composite layer arranged sequentially. The first composite layer includes a first chopped strand mat and a first needle-punched nonwoven fabric arranged sequentially on a first side of the aluminum honeycomb panel. The second composite layer includes a second chopped strand mat, a satin-textured fiberglass cloth, and a second needle-punched nonwoven fabric arranged sequentially on a second side of the aluminum honeycomb panel. The first composite layer is bonded to the first side of the aluminum honeycomb panel through a first flame-retardant polyurethane foam layer, and the second composite layer is bonded to the second side of the aluminum honeycomb panel through a second flame-retardant polyurethane foam layer.

2. The vehicle interior trim panel according to claim 1, characterized in that, The basis weight of the first needle-punched nonwoven fabric is 50 g / m². 2 ~120 g / m 2 ; and / or, the basis weight of the second needle-punched nonwoven fabric is 50 g / m². 2 ~120 g / m 2 .

3. The vehicle interior trim panel according to claim 1, characterized in that, The satin-textured fiberglass cloth has a tex of 50-300 and a basis weight of 200 g / m². 2 ~500 g / m 2 .

4. The vehicle interior trim panel according to claim 1, characterized in that, The aluminum honeycomb panel has a thickness of 3 mm to 10 mm, a pore size of 4 mm to 8 mm, and a basis weight of 60 g / m³. 2 ~160 g / m 2 .

5. The vehicle interior trim panel according to claim 1, characterized in that, The thickness of the first composite layer is 0.3~0.5 mm, the thickness of the second composite layer is 0.4~0.7 mm, and the thickness of the second composite layer is greater than the thickness of the first composite layer.

6. The vehicle interior trim panel according to any one of claims 1 to 5, characterized in that, The first flame-retardant polyurethane foam layer permeates the first needle-punched nonwoven fabric and the first chopped strand mat; and / or, the second flame-retardant polyurethane foam layer permeates the second chopped strand mat, the satin fiberglass cloth, and the second needle-punched nonwoven fabric.

7. The vehicle interior trim panel according to claim 6, characterized in that, At least a portion of the first flame-retardant polyurethane foam layer extends into the honeycomb pores on the first side of the aluminum honeycomb panel; And / or, at least a portion of the second flame-retardant polyurethane foam layer extends into the honeycomb pores on the second side of the aluminum honeycomb panel.

8. The vehicle interior panel according to claim 6, characterized in that, The vehicle interior panel also includes a PVC skin layer, which is bonded to the side of the second composite layer opposite to the aluminum honeycomb panel.

9. The vehicle interior panel according to claim 6, characterized in that, The second composite layer also has a paint layer on the side facing away from the aluminum honeycomb panel.

10. A vehicle, characterized in that, At least a portion of the interior wall of the vehicle is bonded to the first composite layer of the vehicle interior panel as described in any one of claims 1 to 9.

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