Automobile cavity foaming sealing expansion piece

Abstract

The utility model discloses an automobile cavity foaming sealing expansion piece which comprises an expansion piece body, a wear-resisting piece is attached to the upper portion of the expansion piece body, a bonding layer is attached to the lower portion of the wear-resisting piece, a base material layer is arranged in the expansion piece body, a flame-retardant layer is attached to the lower portion of the base material layer, and the flame-retardant layer is attached to the lower portion of the flame-retardant layer. A corrosion-resistant layer is attached to the lower portion of the flame-retardant layer, and a compression-resistant layer is arranged below the corrosion-resistant layer; according to the automobile cavity foaming sealing expansion piece, the expansion piece body, the wear-resisting piece and the bonding layer are used in cooperation, the wear-resisting piece is made of a polyurethane material, the polyurethane material is a macromolecule wear-resisting material and has the advantages of being high in strength, resistant to corrosion, resistant to abrasion and the like, and the polyurethane expansion piece is suitable for occasions needing to bear large pressure and friction; therefore, the expansion piece main body is not easy to break when being worn in use, the sealing performance of the expansion piece main body is ensured, and the filling and sealing effects on the inner cavity of the automobile are better.

Description

Technical Field

[0001] The utility model relates to the technical field related to automobile accessories, in particular to an automobile cavity foaming sealing expansion sheet. Background Art

[0002] Auto parts are the various units that make up the whole of a car and are a kind of product that serves the car. Expansion sheets are a material used to fill and seal the internal cavities of a car. It fills the entire inner cavity by injecting non-toxic foaming materials, thereby reducing resonance and noise during driving and improving the quietness and comfort of the car. This material is very effective in blocking air transmission and has the ability to absorb sound. In automobile manufacturing, expansion sheets are usually placed in smaller cross-section cavities of the car body, such as a / b / c / d pillars.

[0003] However, the existing sealing expansion sheet has insufficient wear resistance. The surface of the expansion sheet is easily worn when in use, which reduces the sealing effect of the expansion sheet and has poor practicality. Therefore, the present application provides an automobile cavity foaming sealing expansion sheet to meet the demand. Utility Model Content

[0004] The utility model aims to provide a foaming sealing expansion sheet for automobile cavities to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile cavity foaming sealing expansion sheet, comprising an expansion sheet main body, a wear-resistant sheet is bonded to the top of the expansion sheet main body, an adhesive layer is bonded to the bottom of the wear-resistant sheet, a substrate layer is arranged inside the expansion sheet main body, a flame-retardant layer is bonded to the bottom of the substrate layer, an anti-corrosion layer is bonded to the bottom of the flame-retardant layer, a pressure-resistant layer is arranged to the bottom of the anti-corrosion layer, and an anti-oxidation layer is arranged to the bottom of the pressure-resistant layer.

[0006] Preferably, the wear-resistant sheet is made of polyurethane, and the wear-resistant sheet conforms to the shape of the expansion sheet body.

[0007] Preferably, the wear-resistant sheet is connected to the expansion sheet body by bonding through an adhesive layer, and the adhesive layer is in contact with the upper side of the expansion sheet body.

[0008] Preferably, a waterproof layer is provided above the substrate layer, and the material of the waterproof layer is acrylic waterproof coating.

[0009] Preferably, the flame retardant layer is bonded to the bottom of the substrate layer, and the flame retardant layer is tightly attached to the substrate layer.

[0010] Preferably, the lower part of the anti-corrosion layer is in contact with the upper part of the anti-pressure layer, and the anti-corrosion layer and the anti-pressure layer are used in combination.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. This kind of automobile cavity foaming sealing expansion sheet is used in combination with an expansion sheet body, a wear-resistant sheet and an adhesive layer. The wear-resistant sheet is made of polyurethane material, which is a polymer wear-resistant material with high strength, corrosion resistance, wear resistance and other characteristics. The polyurethane expansion sheet is suitable for occasions that need to withstand greater pressure and friction. In this way, when the expansion sheet body is worn during use, it will not be easily broken, ensuring the sealing performance of the expansion sheet body, and having a better filling and sealing effect on the internal cavity of the automobile;

[0013] 2. The automobile cavity foam sealing expansion sheet is provided with a waterproof layer and a flame retardant layer. The material of the waterproof layer is acrylic waterproof coating. The acrylic waterproof coating can form a smooth and dense waterproof film to effectively prevent water from invading and improve the waterproofness of the expansion sheet body. The material of the flame retardant layer is flame retardant rubber. Flame retardant rubber is a special rubber material with excellent flame retardant properties. It can maintain stability under high temperature or fire source;

[0014] 3. This automobile cavity foam sealing expansion sheet has a pressure-resistant layer and an anti-oxidation layer. The material of the pressure-resistant layer is glass fiber reinforced plastic, which has excellent compressive strength and lightweight characteristics, and can prevent the expansion sheet body from being compressed and deformed. The material of the anti-oxidation layer is silicone coating, which has excellent high temperature resistance, corrosion resistance and anti-oxidation properties. It can maintain stability in a high temperature environment and effectively prevent the expansion sheet body from being damaged due to oxidation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the wear-resistant sheet of the utility model when viewed from above;

[0017] Figure 3 It is a schematic cross-sectional structure diagram of the expansion sheet main body of the utility model.

[0018] In the figure: 1. expansion sheet body; 2. wear-resistant sheet; 3. adhesive layer; 4. base material layer; 5. waterproof layer; 6. flame retardant layer; 7. anti-corrosion layer; 8. anti-pressure layer; 9. anti-oxidation layer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2 The utility model provides a technical solution: an automobile cavity foam sealing expansion sheet, comprising an expansion sheet main body 1, a wear-resistant sheet 2 is attached to the top of the expansion sheet main body 1, the wear-resistant sheet 2 is made of polyurethane, and the shape of the wear-resistant sheet 2 is consistent with the expansion sheet main body 1. The polyurethane material is a polymer wear-resistant material with the characteristics of high strength, corrosion resistance, and wear resistance. The polyurethane expansion sheet is suitable for occasions that need to withstand greater pressure and friction. In this way, when the expansion sheet main body 1 is worn during use, it will not be easily broken, ensuring the sealing performance of the expansion sheet main body 1. An adhesive layer 3 is attached to the bottom of the wear-resistant sheet 2, and the wear-resistant sheet 2 is attached to the expansion sheet main body 1 through the adhesive layer 3. The adhesive layer 3 is attached to the top of the expansion sheet main body 1, which is convenient for bonding the wear-resistant sheet 2 to the expansion sheet main body 1, and the connection method is relatively simple;

[0021] See also Figure 3 A substrate layer 4 is provided inside the expansion sheet main body 1, and a waterproof layer 5 is provided above the substrate layer 4. The material of the waterproof layer 5 is acrylic waterproof coating. The acrylic waterproof coating can form a smooth and dense waterproof film, which effectively prevents moisture from invading and improves the waterproofness of the expansion sheet main body 1. A flame retardant layer 6 is attached below the substrate layer 4. The flame retardant layer 6 is bonded to the bottom of the substrate layer 4. The flame retardant layer 6 is tightly attached to the substrate layer 4. The material of the flame retardant layer 6 is flame retardant rubber. Flame retardant rubber is a special rubber material with excellent flame retardant properties. It can maintain stability under high temperature or fire. An anti-corrosion layer 7 is attached below the flame retardant layer 6. An anti-pressure layer 8 is provided below the anti-corrosion layer 7. The bottom of the anti-corrosion layer 7 is attached to the top of the anti-pressure layer 8. The anti-corrosion layer 7 is used in conjunction with the anti-pressure layer 8. The material of the anti-pressure layer 8 is glass fiber reinforced plastic, which has excellent compressive strength and lightweight characteristics, so as to avoid compression and deformation of the expansion sheet main body 1. An anti-oxidation layer 9 is provided below the anti-pressure layer 8.

[0022] Working principle: When using the automobile cavity foaming sealing expansion sheet, first place the expansion sheet main body 1 in the automobile cavity. The wear-resistant sheet 2 is arranged to improve the wear resistance of the expansion sheet main body 1, so that the expansion sheet main body 1 will not easily break when worn during use, thereby ensuring the sealing performance of the expansion sheet main body 1. Secondly, the material of the waterproof layer 5 is acrylic waterproof coating, which can form a smooth and dense waterproof film to effectively prevent moisture intrusion and improve the waterproofness of the expansion sheet main body 1. The material of the antioxidant layer 9 is silicone coating, which has excellent high temperature resistance, corrosion resistance and antioxidant properties. It can maintain stability in a high temperature environment and effectively prevent the expansion sheet main body 1 from being damaged due to oxidation. In this way, the use process of the automobile cavity foaming sealing expansion sheet is completed.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile cavity foam sealing expansion sheet, comprising an expansion sheet body (1), characterized in that: A wear-resistant sheet (2) is bonded to the top of the expansion sheet body (1), an adhesive layer (3) is bonded to the bottom of the wear-resistant sheet (2), a base material layer (4) is arranged inside the expansion sheet body (1), a flame-retardant layer (6) is bonded to the bottom of the base material layer (4), an anti-corrosion layer (7) is bonded to the bottom of the flame-retardant layer (6), a pressure-resistant layer (8) is arranged to the bottom of the anti-corrosion layer (7), and an anti-oxidation layer (9) is arranged to the bottom of the pressure-resistant layer (8).

2. The automobile cavity foaming sealing expansion sheet according to claim 1, characterized in that: The material of the wear-resistant sheet (2) is polyurethane, and the shape of the wear-resistant sheet (2) is consistent with that of the expansion sheet body (1).

3. The automobile cavity foaming sealing expansion sheet according to claim 1, characterized in that: The wear-resistant sheet (2) is bonded and connected to the expansion sheet body (1) via an adhesive layer (3), and the adhesive layer (3) is bonded to the top of the expansion sheet body (1).

4. The automobile cavity foaming sealing expansion sheet according to claim 1, characterized in that: A waterproof layer (5) is arranged above the substrate layer (4), and the material of the waterproof layer (5) is acrylic waterproof coating.

5. The automobile cavity foaming sealing expansion sheet according to claim 1, characterized in that: The flame retardant layer (6) is bonded to the bottom of the substrate layer (4), and the flame retardant layer (6) is tightly attached to the substrate layer (4).

6. The automobile cavity foaming sealing expansion sheet according to claim 1, characterized in that: The lower part of the anti-corrosion layer (7) is in contact with the upper part of the anti-pressure layer (8), and the anti-corrosion layer (7) and the anti-pressure layer (8) are used in combination.

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