Wear-resistant EVA sheet for vehicle

Abstract

This utility model relates to the field of EVA sheet technology and discloses a wear-resistant EVA sheet for automotive applications. It includes an EVA sheet body, with a first wear-resistant layer fixedly disposed on the outer side of the EVA sheet body. A second wear-resistant layer is fixedly disposed on the side of the EVA sheet body away from the first wear-resistant layer. The first wear-resistant layer is a chromium oxide coating, applied uniformly to the outer surface of the EVA sheet body using arc spraying, with a spray thickness of 0.6–0.8 cm. The second wear-resistant layer is also a chromium oxide coating, applied uniformly to the outer surface of the EVA sheet body using arc spraying, with a spray thickness of 0.6–0.8 cm. This wear-resistant EVA sheet for automotive applications features chromium oxide coatings in both the first and second wear-resistant layers, which exhibit good coating toughness, chemical stability at high temperatures, corrosion resistance, abrasive wear resistance, and anti-wetting properties, thus improving the wear resistance of the EVA sheet body. The epoxy coatings in the first and second corrosion-resistant layers have good adhesion and chemical resistance.

Description

Technical Field

[0001] This utility model relates to the field of EVA sheet technology, specifically to a wear-resistant EVA sheet for automotive applications. Background Technology

[0002] EVA sheets are currently the most widely used soft foam material in any industry, both domestically and internationally. EVA sheets are made of ethylene-vinyl acetate copolymer (plastic), and their characteristic is that the higher the ethylene content, the softer they are. EVA sheets have a wide range of applications and are related to the basic industries of the national economy. With the improvement of people's living standards, the EVA market size has grown by more than 15% in recent years.

[0003] Existing patent CN205202906U discloses a foamed sheet with rubber bracket for automobiles. This utility model is used to fill irregular gaps left in the outer cavity of the D-pillar and rear panel of automobiles, achieving sealing and blocking noise transmission. It includes a self-adhesive EPDM foamed rubber layer I, a nylon 66 bracket layer, a self-adhesive EPDM foamed rubber layer II, and a release paper. Below the self-adhesive EPDM foamed rubber layer I, there are sequentially arranged a nylon 66 bracket layer, a self-adhesive EPDM foamed rubber layer II, and a release paper. A fixing buckle is provided in the middle of the side of the nylon 66 bracket layer. The effect is that this product can perfectly replace EVA bracket foaming, significantly improving production efficiency and greatly reducing costs.

[0004] However, although the existing patent CN205202906U can perfectly replace EVA bracket foaming, not only significantly improving production efficiency but also greatly reducing costs, the sheet may experience varying degrees of wear and tear during long-term use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a wear-resistant EVA sheet for automotive applications, in order to solve the problem mentioned in the background art that the sheet may experience varying degrees of wear during long-term use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant EVA sheet for automotive applications, comprising an EVA sheet body, a first wear-resistant layer fixedly disposed on the outer side of the EVA sheet body, and a second wear-resistant layer fixedly disposed on the side of the EVA sheet body away from the first wear-resistant layer. The first wear-resistant layer is a chromium oxide coating, which is uniformly adhered to the outer surface of the EVA sheet body by arc spraying, with a spraying thickness of 0.6–0.8 cm. The second wear-resistant layer is a chromium oxide coating, which is uniformly adhered to the outer surface of the EVA sheet body by arc spraying, with a spraying thickness of 0.6–0.8 cm.

[0009] Preferably, a corrosion-resistant layer is fixedly disposed on the inner side of the first wear-resistant layer, and a corrosion-resistant layer is fixedly disposed on the inner side of the second wear-resistant layer. The chromium oxide coating used in the first and second wear-resistant layers has good coating toughness, stable chemical properties at high temperature, and characteristics such as corrosion resistance, abrasive wear resistance, and wetting resistance, which can improve the wear resistance of the EVA sheet body. The epoxy coating used in the first and second corrosion-resistant layers has good adhesion and chemical resistance, which can improve the corrosion resistance of the EVA sheet body.

[0010] Preferably, the first corrosion-resistant layer is an epoxy coating, which is applied by spraying to uniformly adhere to the outer surface of the EVA sheet body, with a spray thickness of 0.1 to 0.3 cm. The second corrosion-resistant layer is also an epoxy coating, which is applied by spraying to uniformly adhere to the outer surface of the EVA sheet body, with a spray thickness of 0.1 to 0.3 cm.

[0011] Preferably, a waterproof layer is fixedly disposed on the inner side of the first corrosion-resistant layer, and a waterproof layer is fixedly disposed on the inner side of the second corrosion-resistant layer. The first and second waterproof layers have the characteristics of high strength, large elongation, and good water resistance, which can improve the waterproof effect of the EVA sheet body.

[0012] Preferably, the first waterproof layer is a polyurethane waterproof coating, which is applied by spraying to evenly adhere to the outer surface of the EVA sheet body, with a spray thickness of 60-80 μm. The second waterproof layer is a polyurethane waterproof coating, which is applied by spraying to evenly adhere to the outer surface of the EVA sheet body, with a spray thickness of 60-80 μm.

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

[0014] 1. The wear-resistant EVA sheet used in this vehicle has a chromium oxide coating in wear-resistant layer one and wear-resistant layer two. The coating has good toughness, stable chemical properties at high temperature, and features such as corrosion resistance, abrasive wear resistance, and wetting resistance, which can improve the wear resistance of the EVA sheet itself.

[0015] 2. The wear-resistant EVA sheet used in this vehicle has epoxy coatings in corrosion-resistant layer one and corrosion-resistant layer two, which have good adhesion and chemical resistance, and can improve the corrosion resistance of the EVA sheet itself. Waterproof layer one and waterproof layer two have the characteristics of high strength, large elongation and good water resistance, which can improve the waterproof effect of the EVA sheet itself. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of the present invention.

[0018] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a partial cross-sectional structural diagram of the present invention.

[0020] In the diagram: 1. EVA sheet body; 2. Wear-resistant layer one; 3. Wear-resistant layer two; 4. Corrosion-resistant layer one; 5. Corrosion-resistant layer two; 6. Waterproof layer one; 7. Waterproof layer two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a wear-resistant EVA sheet for automotive applications, comprising an EVA sheet body 1, a wear-resistant layer 2 fixedly disposed on the outer side of the EVA sheet body 1, and a wear-resistant layer 3 fixedly disposed on the side of the EVA sheet body 1 away from the wear-resistant layer 2. The wear-resistant layer 2 is a chromium oxide coating, which is uniformly adhered to the outer surface of the EVA sheet body 1 by arc spraying, with a spraying thickness of 0.6-0.8 cm. The wear-resistant layer 3 is a chromium oxide coating, which is uniformly adhered to the outer surface of the EVA sheet body 1 by arc spraying, with a spraying thickness of 0.6-0.8 cm.

[0023] A corrosion-resistant layer 4 is fixedly disposed on the inner side of wear-resistant layer 2, and a corrosion-resistant layer 5 is fixedly disposed on the inner side of wear-resistant layer 3. Corrosion-resistant layer 4 is an epoxy coating, applied evenly to the outer surface of the EVA sheet body 1 using a spraying method, with a spray thickness of 0.1–0.3 cm. Corrosion-resistant layer 5 is also an epoxy coating, applied evenly to the outer surface of the EVA sheet body 1 using a spraying method, with a spray thickness of 0.1–0.3 cm. A waterproof layer 6 is fixedly disposed on the inner side of corrosion-resistant layer 4, and a waterproof layer 7 is fixedly disposed on the inner side of corrosion-resistant layer 5. Waterproof layer 6 is a polyurethane waterproof coating, applied evenly to the outer surface of the EVA sheet body 1 using a spraying method, with a spray thickness of 60–80 μm. The second waterproof layer 7 uses a polyurethane waterproof coating, which is applied by spraying to evenly adhere to the outer surface of the EVA sheet body 1, with a spray thickness of 60-80 μm. When using automotive wear-resistant EVA sheets, the chromium oxide coating used in the first wear-resistant layer 2 and the second wear-resistant layer 3 has good coating toughness, stable chemical properties at high temperatures, and characteristics such as corrosion resistance, abrasive wear resistance, and wetting resistance, which can improve the wear resistance of the EVA sheet body. The epoxy coating used in the first corrosion-resistant layer 4 and the second corrosion-resistant layer 5 has good adhesion and chemical resistance, which can improve the corrosion resistance of the EVA sheet body 1. The first waterproof layer 6 and the second waterproof layer 7 have high strength, high elongation, and good water resistance, which can improve the waterproof effect of the EVA sheet body 1.

[0024] Working principle: When using automotive wear-resistant EVA sheets, the chromium oxide coating used in wear-resistant layer 1 (2) and wear-resistant layer 2 (3) has good coating toughness, stable chemical properties at high temperatures, and characteristics such as corrosion resistance, abrasive wear resistance, and wetting resistance, which can improve the wear resistance of the EVA sheet body. The epoxy coating used in corrosion-resistant layer 1 (4) and corrosion-resistant layer 2 (5) has good adhesion and chemical resistance, which can improve the corrosion resistance of the EVA sheet body 1. The waterproof layer 1 (6) and waterproof layer 2 (7) have characteristics such as high strength, large elongation, and good water resistance, which can improve the waterproof effect of the EVA sheet body 1.

[0025] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A wear resistant EVA sheet for vehicles comprising an EVA sheet body (1), characterized by: A wear-resistant layer one (2) is fixedly provided on the outer side of the EVA sheet body (1), and a wear-resistant layer two (3) is fixedly provided on the side of the EVA sheet body (1) away from the wear-resistant layer one (2). The wear-resistant layer one (2) is made of chromium oxide coating and is uniformly attached to the outer surface of the EVA sheet body (1) by arc spraying, with a spraying thickness of 0.6 to 0.8 cm. The wear-resistant layer two (3) is made of chromium oxide coating and is uniformly attached to the outer surface of the EVA sheet body (1) by arc spraying, with a spraying thickness of 0.6 to 0.8 cm.

2. A wear resistant EVA sheet for vehicle as claimed in claim 1 wherein: The wear-resistant layer 1 (2) is fixedly provided with a corrosion-resistant layer 1 (4) on the inner side, and the wear-resistant layer 2 (3) is fixedly provided with a corrosion-resistant layer 2 (5) on the inner side.

3. A wear resistant EVA sheet for vehicle as claimed in claim 2 wherein: The first corrosion-resistant layer (4) is an epoxy coating, which is applied by spraying to make it evenly adhered to the outer surface of the EVA sheet body (1) with a spraying thickness of 0.1 to 0.3 cm. The second corrosion-resistant layer (5) is an epoxy coating, which is applied by spraying to make it evenly adhered to the outer surface of the EVA sheet body (1) with a spraying thickness of 0.1 to 0.3 cm.

4. A wear resistant EVA sheet for vehicle as claimed in claim 3 wherein: A waterproof layer (6) is fixedly provided on the inner side of the first corrosion-resistant layer (4), and a waterproof layer (7) is fixedly provided on the inner side of the second corrosion-resistant layer (5).

5. A wear resistant EVA sheet for vehicle as claimed in claim 4 wherein: The first waterproof layer (6) is made of polyurethane waterproof coating. It is applied by spraying to make it evenly adhere to the outer surface of the EVA sheet body (1) with a spraying thickness of 60-80 μm. The second waterproof layer (7) is made of polyurethane waterproof coating. It is applied by spraying to make it evenly adhere to the outer surface of the EVA sheet body (1) with a spraying thickness of 60-80 μm.

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