Degradable polylactic acid injection molding foaming automobile door panel containing reed powder

Abstract

The utility model discloses a degradable polylactic acid injection molding foaming automobile door panel containing reed powder, and relates to the technical field of automobile door panels, the degradable polylactic acid injection molding foaming automobile door panel containing reed powder comprises a door panel, the door panel is composed of an outer layer, a middle layer and an inner layer, the outer layer is composed of a fabric layer and a surface layer, the outer surface of the surface layer is coated with a damp-proof layer, the fabric layer is bonded to the outer side of the surface layer, the middle layer is composed of a fireproof layer and a heat insulation layer, the fireproof layer is bonded to the outer side of the heat insulation layer, and the fireproof layer is bonded to the inner side of the surface layer. According to the technical scheme, the door plate has good waterproof, heat insulation and fireproof performance, meanwhile, the internal filler can be naturally degraded after a vehicle is scrapped, the damage to the environment is reduced, and meanwhile, the problem that a large amount of money needs to be consumed to deal with non-degradable substances in the door plate after the vehicle is scrapped is solved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of automotive door panel technology, and in particular to a polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder. Background Technology

[0002] With economic development and improved living standards, the use of cars has increased year by year. The relationship between vehicles and humans can be described as inseparable. Vehicle manufacturers, vehicle component manufacturers and drivers not only pursue the performance, safety and fuel efficiency of the vehicle itself, but also pay more and more attention to the aesthetics and practicality of the vehicle's interior and exterior.

[0003] At the same time, people are paying more and more attention to environmental protection, such as restricting car license plate numbers or issuing new energy vehicles. Car door panels usually need to be filled with various materials to achieve sound insulation and heat insulation effects. Most of these fillers are non-degradable. When the car is scrapped, these fillers will also affect the environment to a certain extent. In view of this, we have proposed a polylactic acid injection-molded foam car door panel containing reed powder that is biodegradable. Utility Model Content

[0004] The purpose of this invention is to provide a polylactic acid injection-molded foamed automotive door panel containing biodegradable reed powder, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polylactic acid injection-molded foamed car door panel containing biodegradable reed powder, comprising a door panel, the door panel being composed of an outer layer, a middle layer and an inner layer, the outer layer being composed of a fabric layer and a surface layer, the outer surface of the surface layer being coated with a moisture-proof layer, the fabric layer being bonded to the outer side of the surface layer, the middle layer being composed of a fire-resistant layer and a heat-insulating layer, the fire-resistant layer being bonded to the outer side of the heat-insulating layer, and the fire-resistant layer being bonded to the inner side of the surface layer.

[0006] As a preferred embodiment of this utility model, the inner layer is composed of a sound insulation layer and a reinforcing layer, with the sound insulation layer bonded to the outside of the reinforcing layer.

[0007] In a preferred embodiment of this invention, the sound insulation layer is bonded to the inner side of the heat insulation layer.

[0008] As a preferred embodiment of this utility model, a window is provided on the door panel, and an armrest box is fixedly connected to the inner side of the door panel.

[0009] As a preferred embodiment of this utility model, a storage box is fixedly connected to the door panel, and a through groove extending into the interior of the storage box is formed on the outer surface of the storage box.

[0010] As a preferred embodiment of this utility model, the outer surface of the storage box is provided with an installation groove, and the inner wall of the installation groove is rotatably connected with an arc-shaped baffle.

[0011] As a preferred embodiment of this utility model, a control lever is fixedly connected to the outer surface of the arc-shaped baffle, and a groove is provided on the side surface of the arc-shaped baffle near the door panel.

[0012] As a preferred embodiment of this utility model, a torsion spring is fixedly connected to the inner wall of the groove, and the other end of the torsion spring is fixedly connected to the storage box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This polylactic acid injection-molded foam car door panel, containing biodegradable reed powder, combines a moisture-proof layer, a fireproof layer, and a heat insulation layer. This not only gives the door panel excellent waterproof, heat-insulating, and fire-resistant properties, but also ensures that the internal fillers can naturally degrade after the vehicle is scrapped, reducing environmental damage. It also reduces the need for costly disposal of non-degradable materials inside the door panel after the vehicle is scrapped.

[0015] 2. This car door panel, made of polylactic acid injection-molded foam containing biodegradable reed powder, features a storage box that makes it convenient to place the aromatherapy diffuser without having to hang it on the rearview mirror, thus reducing the risk of use and the possibility of obstructing the driver's view. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of a biodegradable polylactic acid injection-molded foamed car door panel containing reed powder according to the present invention.

[0018] Figure 2 This is a schematic diagram of the storage box of this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the door panel of this utility model;

[0021] Figure 5 This is a schematic diagram of the outer plan of the present invention;

[0022] Figure 6 This is a schematic diagram of the middle layer of this utility model;

[0023] Figure 7 This is a schematic diagram of the inner layer of this utility model.

[0024] Reference numerals: 1. Door panel; 2. Outer layer; 3. Middle layer; 4. Inner layer; 5. Surface layer; 6. Moisture-proof layer; 7. Fireproof layer; 8. Heat insulation layer; 9. Sound insulation layer; 10. Reinforcing layer; 11. Window; 12. Armrest box; 13. Storage box; 14. Through groove; 15. Mounting groove; 16. Curved baffle; 17. Control lever; 18. Groove; 19. Torsion spring; 20. Fabric layer. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Please see Figure 1-7 This utility model provides a technical solution: a polylactic acid injection-molded foamed car door panel containing biodegradable reed powder, comprising a door panel 1, which is composed of an outer layer 2, a middle layer 3, and an inner layer 4. The outer layer 2 is composed of a fabric layer 20 and a surface layer 5. The outer surface of the surface layer 5 is coated with a moisture-proof layer 6, and the fabric layer 20 is adhered to the outer side of the surface layer 5. The middle layer 3 is composed of a fire-resistant layer 7 and a heat-insulating layer 8, with the fire-resistant layer 7 adhered to the outer side of the heat-insulating layer 8 and the inner side of the surface layer 5. The moisture-proof layer 6 is made of a protein-based coating, which is not only biodegradable in the natural environment, reducing environmental pollution, but also has a low content of volatile organic compounds, minimizing its impact on the environment and human health. It also has good film-forming properties and excellent waterproof performance, preventing water from eroding the surface layer 5 and enhancing the protection of the door panel 1. The fireproof layer 7 is composed of cellulose nanofibers, which can also degrade in the natural environment and provide excellent fire resistance for the door panel 1. The heat insulation layer 8 is made of bio-based graphene foam, which combines the excellent properties of graphene with the biodegradability of bio-based materials. It has excellent thermal conductivity and good mechanical properties. At the same time, its porous structure can effectively reduce the weight of the door panel 1 and reduce the drag when the vehicle is driven. Through the combination of the moisture-proof layer 6, the fireproof layer 7 and the heat insulation layer 8, the door panel 1 can not only have good waterproof, heat insulation and fire resistance, but also the internal filling materials can be naturally degraded after the vehicle is scrapped, reducing the damage to the environment. It also reduces the need to spend a lot of money to deal with the non-degradable materials inside the door panel after the vehicle is scrapped.

[0027] Furthermore, the inner layer 4 is composed of a sound insulation layer 9 and a reinforcing layer 10. The sound insulation layer 9 is bonded to the outside of the reinforcing layer 10 and to the inside of the heat insulation layer 8. A window 11 is provided on the door panel 1. An armrest box 12 is fixedly connected to the inside of the door panel 1. A storage box 13 is fixedly connected to the door panel 1. A through groove 14 extending into the interior is formed on the outer surface of the storage box 13. A mounting groove 15 is formed on the outer surface of the storage box 13. The inner wall of the mounting groove 15 is rotatably connected to... There is an arc-shaped baffle 16, and a control lever 17 is fixedly connected to the outer surface of the arc-shaped baffle 16. A groove 18 is formed on the side of the arc-shaped baffle 16 near the door panel 1. A torsion spring 19 is fixedly connected to the inner wall of the groove 18. The other end of the torsion spring 19 is fixedly connected to the storage box 13. By moving the control lever 17, the arc-shaped baffle 16 is driven to rotate. When the arc-shaped baffle 16 rotates, it will compress the torsion spring 19 simultaneously. After the arc-shaped baffle 16 rotates, it releases the pressure on the storage box 13. The door panel 1 is enclosed, allowing solid aromatherapy products to be placed inside the storage box 13. The sound insulation layer 9 described in the text is made of bio-based sound-absorbing cotton, giving the door panel 1 good sound absorption performance. The bio-based sound-absorbing cotton has a small impact on the environment during production and can naturally degrade after its service life, reducing landfill and environmental pollution. The reinforcing layer 10 is a composite of reed powder and polylactic acid. Reed powder can increase the bio-based content of PLA, reduce costs, and improve the processing and mechanical properties of PLA. Physical or chemical foaming agents are added to the reed powder / PLA composite material, which generates gas during heating and forms a microporous structure, thereby achieving foaming. This not only reduces the material density but also improves the impact strength and heat insulation performance. The storage box 13 makes it convenient to place aromatherapy products without having to hang them on the central rearview mirror, reducing the risk of use and the possibility of obstructing the driver's view.

[0028] Working principle: By moving the control lever 17, the arc-shaped baffle 16 is rotated. When the arc-shaped baffle 16 rotates, the torsion spring 19 is compressed simultaneously. After the arc-shaped baffle 16 rotates, it releases the seal on the storage box 13. At this time, solid fragrances and other items can be placed inside the storage box 13.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder, comprising a door panel (1), characterized in that: The door panel (1) is composed of an outer layer (2), a middle layer (3) and an inner layer (4). The outer layer (2) is composed of a fabric layer (20) and a surface layer (5). The outer surface of the surface layer (5) is coated with a moisture-proof layer (6). The fabric layer (20) is bonded to the outside of the surface layer (5). The middle layer (3) is composed of a fireproof layer (7) and a heat insulation layer (8). The fireproof layer (7) is bonded to the outside of the heat insulation layer (8). The fireproof layer (7) is bonded to the inside of the surface layer (5).

2. The polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder according to claim 1, characterized in that: The inner layer (4) is composed of a sound insulation layer (9) and a reinforcing layer (10), with the sound insulation layer (9) bonded to the outside of the reinforcing layer (10).

3. The polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder according to claim 2, characterized in that: The sound insulation layer (9) is bonded to the inside of the heat insulation layer (8).

4. The polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder according to claim 1, characterized in that: A window (11) is provided on the door panel (1), and an armrest box (12) is fixedly connected to the inner side of the door panel (1).

5. A polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder according to claim 4, characterized in that: A storage box (13) is fixedly connected to the door panel (1), and a through groove (14) extending into the outer surface of the storage box (13) is provided.

6. A polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder according to claim 5, characterized in that: The outer surface of the storage box (13) is provided with an installation groove (15), and the inner wall of the installation groove (15) is rotatably connected with an arc-shaped baffle (16).

7. A polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder according to claim 6, characterized in that: The outer surface of the arc-shaped baffle (16) is fixedly connected to a control lever (17), and a groove (18) is provided on the side surface of the arc-shaped baffle (16) near the door panel (1).

8. A polylactic acid injection-molded foam automotive door panel containing biodegradable reed powder according to claim 7, characterized in that: A torsion spring (19) is fixedly connected to the inner wall of the groove (18), and the other end of the torsion spring (19) is fixedly connected to the storage box (13).

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