Oil-resistant and high-temperature-resistant rubber plate with multi-layer structure

Abstract

The utility model provides a multilayer structure oil resistant high temperature resistant rubber plate, including rubber plate body, the rubber plate body includes upper EPDM rubber layer, skeleton grid layer and lower AEM rubber layer, the upper EPDM rubber layer is provided in the upper part of skeleton grid layer, the lower AEM rubber layer is provided in the lower part of skeleton grid layer, and the three layers are vulcanized and compounded. According to the oil-resistant and high-temperature-resistant rubber plate with the multi-layer structure, the EPDM / AEM rubber layer is combined with the framework grid layer to form the oil-resistant and high-temperature-resistant rubber plate with the multi-layer structure, and the rubber plate can work at the high temperature of 175 DEG C for a long time, has very high fatigue resistance and deflection frequency, has good fatigue resistance and thermal stability, has the advantage of long service life, and is suitable for large-scale popularization and application. The dismounting frequency of the rubber plate of the laminating machine is effectively reduced, the maintenance cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber plate preparation, in particular to an oil-resistant and high-temperature-resistant rubber plate with a multi-layer structure. Background Art

[0002] The fatigue flexing times of rubber sheets is a key physical performance indicator. A high fatigue flexing times means that the rubber sheet can still maintain good elasticity and resilience after being subjected to long-term or multiple bending, folding, twisting and other deformations, and is not prone to cracking, breakage or performance degradation. This performance is crucial for the long-term stable operation of rubber sheets under various dynamic working conditions and is one of the important indicators for evaluating the fatigue resistance of rubber sheets. The higher the fatigue flexing times, the better the fatigue resistance of the rubber sheet, and it can maintain its original performance and shape for a longer time or more times of use.

[0003] In practical applications, such as when rubber sheets are used in solar laminators, the fatigue bending times and fatigue resistance of rubber sheets are of great significance to ensure the reliability and life of rubber products. By increasing the fatigue bending times of rubber sheets, the service life of rubber sheets can be increased, the number of times the rubber sheets of laminators are disassembled can be reduced, and the various costs of laminator shutdown maintenance can be relatively reduced, thereby improving the production efficiency of laminators.

[0004] In the prior art, rubber sheets are mostly EPDM rubber sheets. By adding multiple layers of reinforcing mesh layers or elastic metal sheet base layers to the EPDM rubber sheets, the fatigue bending resistance, fatigue resistance and thermal stability of the rubber sheets at high temperatures are improved, so that the rubber sheets have a longer service life. The rubber sheets prepared by the prior art can work for a long time at 150°C and have good performance and service life. However, as the working temperature further increases to 175°C, the fatigue bending resistance, fatigue resistance and thermal stability of the rubber sheets decrease simultaneously, and the service life is reduced, and they cannot adapt to higher working temperatures.

[0005] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The utility model provides a multi-layer structure oil-resistant and high-temperature resistant rubber sheet. By arranging a skeleton grid layer, an upper EPDM rubber layer and a lower AEM rubber layer, the skeleton grid layer is arranged between the upper EPDM rubber layer and the lower AEM rubber layer. The high-temperature and oil-resistant performance of the AEM rubber can be utilized to enable the rubber sheet to adapt to a working temperature of 175°C. At the same time, the skeleton grid layer is utilized to improve the flexural fatigue resistance of the rubber sheet, thereby solving the problems of low fatigue flexural resistance times and short service life of the existing EPDM rubber sheet at higher temperatures.

[0007] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0008] A technical solution adopted by the utility model is: to provide a multi-layer structure oil-resistant and high-temperature resistant rubber plate, including a rubber plate body, the rubber plate body including an upper EPDM rubber layer, a skeleton grid layer and a lower AEM rubber layer, the upper EPDM rubber layer is arranged on the upper part of the skeleton grid layer, the lower AEM rubber layer is arranged on the lower part of the skeleton grid layer, and the three are vulcanized and composited.

[0009] Furthermore, the thickness of the upper EPDM rubber layer and the lower AEM rubber layer is between 1.5-2 mm, and the thickness of the skeleton grid layer is between 0.15-0.3 mm. Selecting appropriate skeleton grid layer thickness and rubber layer thickness can effectively improve the fatigue flexure resistance of the rubber sheet at high temperature.

[0010] Furthermore, the skeleton grid layer is made of aramid grid cloth material, which has excellent properties such as high strength, high modulus, and high temperature resistance, and has good adhesion with AEM rubber.

[0011] Furthermore, the aramid mesh cloth is impregnated, and the liquid used for impregnation is one of epoxy resin, polyurethane, rubber latex, and functional coating.

[0012] Furthermore, the mesh size of the aramid mesh cloth is between 11-13 mm.

[0013] Furthermore, the rubber plate body also includes an upper AEM rubber layer and a second skeleton grid layer, the upper AEM rubber layer is arranged on the upper part of the upper EPDM rubber layer, the second skeleton grid layer is arranged between the upper AEM rubber layer and the upper EPDM rubber layer, and the upper AEM rubber layer, the second skeleton grid layer, the upper EPDM rubber layer, the skeleton grid layer and the lower AEM rubber layer are vulcanized and composited.

[0014] Furthermore, the thickness of the upper AEM rubber layer, the upper EPDM rubber layer and the lower AEM rubber layer is between 1.0-1.4 mm, and the thickness of the skeleton grid layer is between 0.15-0.3 mm. Selecting appropriate skeleton grid layer thickness and rubber layer thickness can effectively improve the fatigue flexure resistance of the rubber sheet at high temperature.

[0015] Furthermore, the skeleton mesh layer and the second skeleton mesh layer are both made of aramid mesh cloth material.

[0016] Furthermore, the aramid mesh cloth is impregnated, and the liquid used for impregnation is one of epoxy resin, polyurethane, rubber latex, and functional coating.

[0017] Furthermore, the mesh size of the aramid mesh cloth is between 15-17 mm.

[0018] The utility model provides a multi-layer structure of oil-resistant and high-temperature resistant rubber sheet with the following beneficial effects:

[0019] 1. The multi-layer structure of oil-resistant and high-temperature resistant rubber sheet is formed by combining EPDM / AEM rubber layer with skeleton grid layer. The rubber sheet can work for a long time at a high temperature of 175℃ and has a high fatigue flexure resistance. It has good fatigue resistance and thermal stability, and has the advantages of long service life. It effectively reduces the number of times the rubber sheet of the laminator is disassembled, reduces maintenance costs, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the disassembly of a multi-layered oil-resistant and high-temperature resistant rubber sheet according to the first embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the disassembly of a multi-layered oil-resistant and high-temperature resistant rubber sheet according to the first embodiment of the utility model;

[0022] The components in the accompanying drawings are marked as follows: 1. upper EPDM rubber layer, 2. skeleton mesh layer, 3. lower AEM rubber layer, 4. upper AEM rubber layer, 5. second skeleton mesh layer. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "horizontal", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention. They cannot indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] See also Figure 1 The first embodiment of the utility model provides a multi-layer structure oil-resistant and high-temperature resistant rubber sheet, including a rubber sheet body, the rubber sheet body including an upper EPDM rubber layer 1, a skeleton grid layer 2 and a lower AEM rubber layer 3, the upper EPDM rubber layer 1 is arranged on the upper part of the skeleton grid layer 2, the lower AEM rubber layer 3 is arranged on the lower part of the skeleton grid layer 2, and the three are vulcanized and composited;

[0026] Among them, the upper EPDM rubber layer 1 is made of EPDM rubber as the main rubber, and the lower AEM rubber layer 3 is made of AEM rubber as the main rubber. The thickness of both is controlled between 1.5-2mm. The skeleton grid layer 2 adopts aramid grid cloth material with diamond mesh holes, and its thickness is controlled between 0.15-0.3mm.

[0027] The thickness requirement of the multi-layered oil-resistant and high-temperature-resistant rubber sheet in this embodiment is 3 mm, the thickness of the upper EPDM rubber layer 1 and the lower AEM rubber layer 3 is controlled at 1.5 mm, and the thickness of the aramid mesh cloth is selected to be 0.15 mm;

[0028] As the required rubber sheet thickness increases, the thickness of the selected aramid mesh cloth will also increase, so as to effectively increase the fatigue flexing times of the rubber sheet at high temperatures.

[0029] Specifically, aramid mesh cloth is a mesh material made of aramid fiber, which has excellent properties such as ultra-high strength, high modulus, high temperature resistance, corrosion resistance, wear resistance, low specific gravity and weight, good thermal stability, small creep hysteresis loss and low heat generation.

[0030] The aramid mesh cloth material of this embodiment is pre-treated and impregnated with epoxy resin. The impregnated aramid mesh cloth has a better adhesive rate and can better bond with the upper EPDM rubber layer 1 and the lower AEM rubber layer 3, thereby improving the peel strength and the flexural fatigue resistance and service life of the rubber plate.

[0031] Specifically, the mesh size of the aramid mesh cloth is 12 mm.

[0032] See also Figure 2 In the second embodiment of the utility model, the rubber plate body further includes an upper AEM rubber layer 4 and a second skeleton grid layer 52;

[0033] The upper AEM rubber layer 4 is arranged on the upper part of the upper EPDM rubber layer 1, the second skeleton grid layer 52 is arranged between the upper AEM rubber layer 4 and the upper EPDM rubber layer 1, and the upper AEM rubber layer 4, the second skeleton grid layer 52, the upper EPDM rubber layer 1, the skeleton grid layer 2 and the lower AEM rubber layer 3 are vulcanized and composited;

[0034] Among them, the upper EPDM rubber layer 1 is made of EPDM rubber as the main rubber, the upper AEM rubber layer 4 and the lower AEM rubber layer 3 are made of AEM rubber as the main rubber, and the thickness of the three is controlled between 1.0-1.4mm, and the skeleton grid layer 2 and the second skeleton grid layer 52 are both made of aramid mesh cloth material with diamond-shaped mesh holes, and the thickness is controlled between 0.15-0.3mm.

[0035] The thickness requirement of the multi-layered oil-resistant and high-temperature-resistant rubber sheet in this embodiment is 3 mm, the thickness of the upper AEM rubber layer 4, the upper EPDM rubber layer 1 and the lower AEM rubber layer 3 is controlled at 1 mm, and the thickness of the aramid mesh cloth is selected to be 0.15 mm;

[0036] The aramid mesh cloth material is also pre-treated and impregnated with epoxy resin, and the mesh size is 15mm.

[0037] By using a double-layer skeleton grid layer 2 to make both sides of the rubber plate into AEM rubber layers and using EPDM for the middle layer, the overall service life of the multi-layer structure oil-resistant and high-temperature resistant rubber plate can be improved. When the lower AEM rubber layer 3 reaches the end of its service life, the rubber plate can be flipped over and the upper AEM rubber layer 4 can be used as a working surface.

[0038] The utility model provides a multi-layer structure of oil-resistant and high-temperature resistant rubber sheet with the following beneficial effects:

[0039] 1. The multi-layer structure of oil-resistant and high-temperature resistant rubber sheet is formed by combining EPDM / AEM rubber layer with skeleton grid layer. The rubber sheet can work for a long time at a high temperature of 175℃ and has a high fatigue flexure resistance. It has good fatigue resistance and thermal stability, and has the advantages of long service life. It effectively reduces the number of times the rubber sheet of the laminator is disassembled, reduces maintenance costs, and improves production efficiency.

[0040] 2. Using impregnated aramid mesh cloth as the skeleton mesh layer can better combine the mesh layer with the rubber layer, improve the peeling strength, and improve the flexural fatigue resistance and service life of the rubber sheet; 3. Using AEM rubber without full rubber sheet can effectively control costs.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-layered oil-resistant and high-temperature resistant rubber sheet, characterized in that: The rubber plate body comprises an upper EPDM rubber layer, a skeleton grid layer and a lower AEM rubber layer. The upper EPDM rubber layer is arranged on the upper part of the skeleton grid layer, and the lower AEM rubber layer is arranged on the lower part of the skeleton grid layer. The three are vulcanized and composited.

2. The multi-layered oil-resistant and high-temperature resistant rubber sheet according to claim 1, characterized in that: The thickness of the upper EPDM rubber layer and the lower AEM rubber layer is between 1.5-2 mm, and the thickness of the skeleton grid layer is between 0.15-0.3 mm.

3. A multi-layered oil-resistant and high-temperature resistant rubber sheet according to any one of claims 1 or 2, characterized in that: The skeleton grid layer is made of aramid grid cloth material.

4. The multi-layered oil-resistant and high-temperature resistant rubber sheet according to claim 3, characterized in that: The aramid mesh cloth is impregnated, and the liquid used for impregnation is one of epoxy resin, polyurethane, rubber latex, and functional coating.

5. The multi-layered oil-resistant and high-temperature-resistant rubber sheet according to claim 3, characterized in that: The mesh size of the aramid mesh cloth is between 11 and 13 mm.

6. The multi-layered oil-resistant and high-temperature-resistant rubber sheet according to claim 1, characterized in that: The rubber plate body also includes an upper AEM rubber layer and a second skeleton grid layer, the upper AEM rubber layer is arranged on the upper part of the upper EPDM rubber layer, the second skeleton grid layer is arranged between the upper AEM rubber layer and the upper EPDM rubber layer, and the upper AEM rubber layer, the second skeleton grid layer, the upper EPDM rubber layer, the skeleton grid layer and the lower AEM rubber layer are vulcanized and composited.

7. The multi-layered oil-resistant and high-temperature-resistant rubber sheet according to claim 6, characterized in that: The thickness of the upper AEM rubber layer, the upper EPDM rubber layer and the lower AEM rubber layer is between 1.0-1.4 mm, and the thickness of the skeleton grid layer is between 0.15-0.3 mm.

8. A multi-layered oil-resistant and high-temperature resistant rubber sheet according to any one of claims 6 or 7, characterized in that: The skeleton mesh layer and the second skeleton mesh layer are both made of aramid mesh cloth material.

9. The multi-layered oil-resistant and high-temperature-resistant rubber sheet according to claim 8, characterized in that: The aramid mesh cloth is impregnated, and the liquid used for impregnation is one of epoxy resin, polyurethane, rubber latex, and functional coating.

10. The multi-layered oil-resistant and high-temperature-resistant rubber sheet according to claim 8, characterized in that: The mesh size of the aramid mesh cloth is between 15-17 mm.

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