A wear-resistant reinforcing layer structure for rubber products

Abstract

This utility model discloses a wear-resistant reinforcing layer structure for rubber products, comprising a rubber base layer, an elastic buffer intermediate layer and a wear-resistant top layer sequentially disposed above the rubber base layer. The Shore hardness of the elastic buffer intermediate layer is lower than that of the wear-resistant top layer but higher than that of the rubber base layer. This utility model achieves initial wear resistance through the wear-resistant layer, while simultaneously providing a sacrificial lubrication layer and hemispherical wear-resistant protrusions on the wear-resistant layer to form a dual-level protection. The sacrificial layer initially consumes wear resistance, while the wear-resistant protrusions provide chip storage space in the later stages, extending the service life of the wear-resistant layer. The elastic buffer intermediate layer ensures that the impact stress received by the wear-resistant layer is buffered and does not directly affect the rubber base layer. Furthermore, the two transition sub-layers, with their varying hardness, reduce interfacial shear stress.

Description

Technical Field

[0001] This utility model relates to the field of rubber product manufacturing technology, specifically to a wear-resistant reinforcing layer structure for rubber products. Background Technology

[0002] Rubber products refer to the activities of producing various rubber products using natural and synthetic rubber as raw materials, and also include rubber products produced from recycled waste rubber. The output of synthetic rubber has far exceeded that of natural rubber, with styrene-butadiene rubber (SBR) having the largest output. Rubber products are made from rubber raw materials through internal mixing to produce compound rubber. During the mixing process, the formula is designed according to the characteristics of the desired rubber product, and the required product hardness is determined. At the same time, the wear resistance of rubber products often needs to be considered during the production process.

[0003] However, existing technologies still have significant shortcomings, such as:

[0004] Existing rubber products also take into account certain wear resistance properties. However, current rubber products often achieve wear resistance simply by stacking the thickness and number of wear-resistant layers. In actual use, the effect is not good. When a single wear-resistant layer is impacted, the stress will be directly transferred to the matrix, causing permanent deformation of the matrix and brittle fracture of the wear-resistant layer. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant reinforcing layer structure for rubber products to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wear-resistant reinforcing layer structure for a rubber product includes a rubber base layer, an elastic buffer intermediate layer and a wear-resistant top layer sequentially disposed above the rubber base layer, wherein the Shore hardness of the elastic buffer intermediate layer is lower than that of the wear-resistant top layer and higher than that of the rubber base layer.

[0008] A gradient transition layer is provided between the rubber base layer and the elastic buffer intermediate layer. The gradient transition layer is composed of at least two transition sub-layers stacked together, and the hardness of the transition sub-layer gradually increases from the rubber base layer to the elastic buffer intermediate layer.

[0009] Preferably, the elastic buffer intermediate layer is a microporous rubber layer, and the porosity of the elastic buffer intermediate layer is 10%-40%.

[0010] Preferably, the Shore hardness of the transition layer near the rubber base layer in the gradient transition layer is 40A-60A, and the Shore hardness of the transition layer near the elastic buffer intermediate layer is 70A-90A.

[0011] Preferably, a reinforcing skeleton layer is embedded between the wear-resistant top layer and the elastic buffer intermediate layer, and the reinforcing skeleton layer is an aramid fiber fabric.

[0012] Preferably, the outer surface of the wear-resistant top layer is covered with a sacrificial lubricating layer, the thickness of which is 0.1-0.5 mm.

[0013] Preferably, the contact surface between the wear-resistant top layer and the elastic buffer intermediate layer has a toothed interlocking structure, and the depth of the serration is 0.2-1mm.

[0014] Preferably, the outer surface of the wear-resistant top layer is provided with a plurality of wear-resistant protrusions, wherein the wear-resistant protrusions are hemispherical.

[0015] Preferably, the thickness of the elastic buffer intermediate layer is 1.5-3 times the thickness of the wear-resistant top layer.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The initial wear resistance effect is achieved by setting the wear-resistant layer. At the same time, the sacrificial lubrication layer and hemispherical wear-resistant protrusions on the wear-resistant layer form a double protection. The sacrificial layer consumes wear resistance in the early stage, and the wear-resistant protrusion structure provides chip storage space in the later stage, extending the service life of the wear-resistant layer.

[0018] 2. The elastic buffer intermediate layer ensures that the impact stress received by the wear-resistant layer is buffered and does not directly affect the rubber base layer. At the same time, the two transition sub-layers reduce the interfacial shear stress through the change in hardness of the transition sub-layers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the toothed interlocking structure of the contact surface between the wear-resistant top layer and the elastic buffer middle layer of this utility model.

[0021] In the diagram: 1. Rubber base layer; 2. Elastic buffer intermediate layer; 3. Wear-resistant top layer; 4. Gradient transition layer; 5. Transition sub-layer; 6. Reinforcing skeleton layer; 7. Sacrificial lubricating layer; 8. Wear-resistant protrusion. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-2 This utility model provides a technical solution:

[0024] A wear-resistant reinforcing layer structure for rubber products includes a rubber base layer 1, an elastic buffer intermediate layer 2, and a wear-resistant top layer 3 sequentially disposed above the rubber base layer 1. The Shore hardness of the elastic buffer intermediate layer 2 is lower than that of the wear-resistant top layer 3 but higher than that of the rubber base layer 1. In this embodiment, the rubber base layer 1 is made of natural rubber, providing flexibility and product deformation capability for the main body, and is the main load-bearing component. Its thickness is 3-5 mm, and its specific thickness can be adjusted according to the type and needs of the product. The elastic buffer intermediate layer 2 is disposed between the wear-resistant top layer 3 and the rubber base layer 1 to buffer the impact force received by the wear-resistant top layer 3, preventing the impact force from directly acting on the rubber base layer 1. The wear-resistant top layer 3, as the outermost wear-resistant layer, provides protection for the inner rubber base layer 1 and achieves wear resistance. The outer surface of the wear-resistant top layer 3 is covered with a sacrificial lubricating layer 7, the thickness of which is... The outer surface of the wear-resistant top layer 3 is provided with several wear-resistant protrusions 8, which are hemispherical. The thickness of the elastic buffer intermediate layer 2 is 1.5-3 times the thickness of the wear-resistant top layer 3. By covering the outer surface of the wear-resistant top layer 3 with a sacrificial lubricating layer 7, which is designed to be removable and replaceable, the overall replacement cost can be reduced. At the same time, the sacrificial layer consumes wear in the early stage. The gap between the protrusions of several wear-resistant protrusions 8 can provide chip storage space in the later stage, extending the service life of the main body. The elastic buffer intermediate layer 2 is a microporous rubber layer with a porosity of 10%-40%. By using the microporous small foot layer as the elastic buffer intermediate layer 2, the impact energy received by the wear-resistant top layer 3 can be absorbed and buffered, which not only protects the rubber base layer 1, but also prevents the wear-resistant top layer 3 from cracking due to impact.

[0025] A gradient transition layer 4 is provided between the rubber base layer 1 and the elastic buffer intermediate layer 2. The gradient transition layer 4 is composed of at least two transition sub-layers 5 stacked together. The hardness of the transition sub-layers 5 gradually increases from the rubber base layer 1 to the elastic buffer intermediate layer 2. The Shore hardness of the transition layer 5a near the rubber base layer 1 in the gradient transition layer 4 is 40A-60A, and the Shore hardness of the transition layer 5b near the elastic buffer intermediate layer 2 is 70A-90A. In this embodiment, the transition layer 4 is provided with two transition sub-layers 5, namely transition layer 5a and transition layer 5b. Through the step change of hardness, the modulus difference between each layer is gradually reduced, so that the interfacial shear stress decreases. The Shore hardness difference between transition layer 5a and transition layer 5b is not greater than 20A.

[0026] A reinforcing skeleton layer 6 is embedded between the wear-resistant top layer 3 and the elastic buffer intermediate layer 2. The reinforcing skeleton layer 6 is made of aramid fiber fabric. The reinforcing skeleton layer can directionally constrain the crack propagation path and reduce the overall wear rate.

[0027] The contact surface between the wear-resistant top layer 3 and the elastic buffer intermediate layer 2 has a toothed interlocking structure with a tooth depth of 0.2-1mm. The toothed interlocking structure enhances the bonding strength between the layers.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear enhancing layer structure for a rubber article, characterized by: It includes a rubber base layer (1), and an elastic buffer intermediate layer (2) and a wear-resistant top layer (3) are sequentially disposed on the rubber base layer (1). The Shore hardness of the elastic buffer intermediate layer (2) is lower than that of the wear-resistant top layer (3) and higher than that of the rubber base layer (1). A gradient transition layer (4) is provided between the rubber base layer (1) and the elastic buffer intermediate layer (2). The gradient transition layer (4) is composed of at least two transition sub-layers (5) stacked together. The hardness of the transition sub-layers (5) gradually increases along the direction from the rubber base layer (1) to the elastic buffer intermediate layer (2).

2. A wear enhancing layer structure for a rubber article according to claim 1, characterized in that: The elastic buffer intermediate layer (2) is a microporous rubber layer with a porosity of 10%-40%.

3. A wear enhancing layer structure for a rubber article according to claim 2, characterized in that: The Shore hardness of the transition layer (5a) near the rubber base layer (1) in the gradient transition layer (4) is 40A-60A, and the Shore hardness of the transition layer (5b) near the elastic buffer intermediate layer (2) is 70A-90A.

4. A wear enhancing layer structure for a rubber article according to claim 3, characterized in that: An reinforcing skeleton layer (6) is embedded between the wear-resistant top layer (3) and the elastic buffer middle layer (2), and the reinforcing skeleton layer (6) is an aramid fiber fabric.

5. A wear enhancing layer structure for a rubber article according to claim 1, characterized in that: The outer surface of the wear-resistant top layer (3) is covered with a sacrificial lubricating layer (7), the thickness of which is 0.1-0.5 mm.

6. A wear enhancing layer structure for a rubber article according to claim 1, characterized in that: The contact surface between the wear-resistant top layer (3) and the elastic buffer intermediate layer (2) has a toothed interlocking structure, and the depth of the serration is 0.2-1mm.

7. A wear enhancing layer structure for a rubber article according to claim 1, characterized in that: The outer surface of the wear-resistant top layer (3) is provided with a number of wear-resistant protrusions (8), and the wear-resistant protrusions (8) are hemispherical.

8. A wear enhancing layer structure for a rubber article according to claim 1, characterized in that: The thickness of the elastic buffer intermediate layer (2) is 1.5-3 times the thickness of the wear-resistant top layer (3).

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