Composite material automobile floor

Abstract

The utility model discloses an automobile floor made of composite materials. The automobile floor is sequentially provided with a metal bottom layer, a fireproof plastic core layer, a metal surface layer, a printable polyester coating and a pattern printing layer from bottom to top. And the fireproof plastic core layer is bonded with the metal bottom layer and the metal surface layer through high-molecular bonding layers. The composite material automobile floor is more scientific and reasonable in structure, light in weight, particularly good in rigidity, particularly flat in surface, environmentally friendly, suitable for personalized decoration printing and suitable for industrial continuous production.

Description

Technical Field

[0001] The utility model relates to an automobile component, in particular to a floor for an automobile. Background Art

[0002] In 2023, my country's automobile production and sales will reach 30.161 million and 30.094 million respectively, up 11.6% and 12% year-on-year respectively, both hitting record highs. China's total passenger car and automobile production has surpassed that of traditional automobile powers such as Europe, the United States, and Japan, ranking first in the world.

[0003] However, none of the commonly used car floors for passenger cars currently have ideal or excellent comprehensive performance. For example, marble series or imitation marble series are too heavy, solid wood series are easy to catch fire and are not conducive to green environmental protection, and carbon fiber series are too expensive. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a more scientific and reasonable composite material automobile floor, which is light in weight, particularly good in rigidity, particularly smooth in surface, green and environmentally friendly, and also suitable for personalized decorative printing and industrial continuous production.

[0005] The technical solution adopted by the utility model to solve the above technical problems is

[0006] A composite material automobile floor, which comprises a metal bottom layer, a fireproof plastic core layer, a metal surface layer, a printable polyester coating and a pattern printing layer in sequence from bottom to top; the fireproof plastic core layer and the metal bottom layer and the metal surface layer are bonded together by a polymer bonding layer.

[0007] Furthermore, the metal bottom layer and the metal surface layer are an aluminum alloy bottom layer and an aluminum alloy surface layer.

[0008] Furthermore, the overall thickness of the vehicle floor is 8-10 mm.

[0009] Furthermore, the thickness of the high-density bonding layer is 0.08 mm.

[0010] We know that strength (tension, compression) stress has nothing to do with the shape of the object, but only with the transverse cross-sectional area of ​​the action, while stiffness (anti-deformation) is related to the shape of the object and the distribution distance of the material from the center line, which is called bending inertia moment. The I-beam has particularly good rigidity because its upper and lower edges are far away from the center. We call this the I-beam theory. The sandwich structure is similar to the I-beam in terms of product structure. The farther the material is distributed from the center, the better the rigidity. The upper and lower panels of the sandwich structure are the upper and lower edge panels of the I-beam, which bear tension and compression stresses, and the plastic core is the web of the I-beam, which bears shear force. A simple set of data can show how obvious the improvement of plate thickness is to stiffness. The thicker the thickness, the more obvious the effect. In order to discuss intuitively and simply, the upper and lower panels are designed to be of equal thickness, both 0.5T, and the total thickness of the upper and lower panels is 1T. Add a 1T high core between the two upper and lower panels. When the total height of the sandwich structure plate is 2T, the stiffness is increased by 7 times and the bending strength is increased by 3.5 times. If a 2T high core is added between the two upper and lower panels, the total height of the sandwich structure is 3T, the stiffness is increased by 37 times, the bending strength is increased by 9.2 times, and the weight is increased by less than 10%. According to the above data, it can be seen that the stiffness of the sandwich structure is much higher than other materials. Good stiffness means good flatness of the board surface. The car floor is a product that requires relatively high material stiffness. The applicant cleverly uses the structure of thickened composite metal plates to obtain a car floor with better comprehensive performance.

[0011] The surface coating of composite metal plates used for general decorative purposes is mostly polyester, acrylic or fluorocarbon coating. These coatings are characterized by good weather resistance, but there is a fatal feature that makes them unsuitable for car floors. Because the coating has a certain self-cleaning property and a large surface tension, the surface cannot be decorated with printing ink patterns. Car floors do not have high requirements for weather resistance, but have special requirements for ink printing on the surface coating.

[0012] The present invention incorporates the use of a printable polyester coating which is a modified polyester coating having good ink compatibility.

[0013] The composite material automobile floor of the present invention is a new type of lightweight sandwich composite material, which is light in weight, particularly good in rigidity, particularly flat in surface, green and environmentally friendly, and also suitable for personalized decorative printing, suitable for industrialized continuous production, and reasonable in cost. It is a more scientific and more reasonable automobile floor structure. It is much lighter than imitation marble slabs or marble slabs, has much better fireproof performance than solid wood floors, has reliable surface printing, and has better flatness and rigidity than metal floors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of the composite material automobile floor.

[0015] In the figure:

[0016] 1. Aluminum alloy bottom layer 2. Fireproof plastic core layer

[0017] 3. Aluminum alloy surface layer 4. Printable polyester coating

[0018] 5. Pattern printing layer 6. Polymer bonding layer DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 A composite material automobile floor is shown, wherein the automobile floor is provided with an aluminum alloy bottom layer 1, a fireproof plastic core layer 2, an aluminum alloy surface layer 3, a printable polyester coating 4 and a pattern printing layer 5 in order from bottom to top; the fireproof plastic core layer 2 and the aluminum alloy bottom layer 1 and the aluminum alloy surface layer 3 are all bonded by a polymer bonding layer 6 (polymer PE film). Due to different designs and requirements, the aluminum alloy bottom layer 1 and the aluminum alloy surface layer 3 can also be made of metal plates such as copper, stainless steel, and titanium alloy plates.

[0021] In order to obtain the best mechanical properties, especially the rigidity performance, the overall thickness of the composite material automobile floor of the utility model is preferably 8-10mm, and the thickness of the high-density bonding layer is 0.08mm. Its rigidity is far better than that of ordinary aluminum-plastic panels, so the automobile floor has strong anti-deformation performance and good flatness.

[0022] The fireproof plastic core layer 2, the aluminum alloy bottom layer 1 and the aluminum alloy surface layer 3 are compounded into a solid whole through a high-strength polymer PE film, and a layer of printable polyester coating 4 produced by Jiangsu Yatai Science and Technology Industrial Park Co., Ltd. is coated on the aluminum alloy surface layer 3 (see the title "A polyester coating on the surface of which ink can be printed and its production process", patent application number CN202110818739.3). The printable polyester coating 4 is a modified polyester or acrylic coating suitable for ink printing, which enables car owners to customize and print personalized patterns on the car floor.

[0023] The 2024 samples of the composite material automobile floor of this utility model were sent to the National Building Materials Testing Center to test the formaldehyde content and an official test report was issued (test report number WT2024B01A00497). The test results showed zero emissions and no formaldehyde. It is a truly green and environmentally friendly product.

[0024] The composite material automobile floor of the utility model is an ideal automobile floor with excellent comprehensive performance.

[0025] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A composite material automobile floor, characterized in that: The automobile floor is provided with a metal bottom layer, a fireproof plastic core layer, a metal surface layer, a printable polyester coating and a pattern printing layer in sequence from bottom to top; the fireproof plastic core layer and the metal bottom layer and the metal surface layer are bonded by a polymer bonding layer.

2. The automobile floor according to claim 1, characterized in that: The metal bottom layer and the metal surface layer are an aluminum alloy bottom layer and an aluminum alloy surface layer.

3. The automobile floor according to claim 2, characterized in that: The overall thickness of the automobile floor is 8-10 mm.

4. The automobile floor according to any one of claims 1 to 3, characterized in that: The thickness of the high-density bonding layer is 0.08 mm.

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