Environment-friendly hose for automobile

Abstract

The utility model relates to the technical field of automobile parts, and discloses an automobile environment-friendly hose which comprises a hose body, the inner wall of the hose body is covered with a protective layer, and the protective layer comprises a high-performance thermoplastic elastomer layer and a blocking layer. According to the environment-friendly hose for the automobile, the high-performance thermoplastic elastomer layer, the blocking layer, the thermoplastic polyurethane layer, the fiber woven layer and other components are arranged, the inner wall of the hose body is covered with the protection layer, the surface of the hose body is covered with the protection layer, and the protection layer adopts the high-performance thermoplastic elastomer layer and the blocking layer; the protective layer adopts the thermoplastic polyurethane layer and the fiber woven layer, so that the high temperature resistance and the aging resistance of the hose main body can be remarkably improved, the hose main body can keep stable performance and long service life in various environments, the reinforcing ribs are embedded in the hose main body, and the spiral metal wires are adopted, so that the service life of the hose main body is prolonged. And the tensile strength and the pressure resistance of the hose main body are improved to a great extent while higher corrosion resistance is achieved.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, specifically to an environmentally friendly flexible hose for automobiles. Background Technology

[0002] Currently, automotive hoses play a crucial role in fuel, cooling, and braking systems. These systems place extremely stringent requirements on hoses, demanding not only excellent pressure resistance and anti-aging properties to ensure stable operation under extreme conditions, but also low permeability to prevent leakage of critical fluids such as fuel, coolant, or brake fluid, thereby ensuring vehicle safety and reliability. Furthermore, a long service life is also an indispensable characteristic of automotive hoses, helping to reduce maintenance costs and time, and improving the overall economy and user experience of the vehicle.

[0003] However, traditional rubber hoses are difficult to meet increasingly stringent environmental standards and technical requirements. They are prone to hardening and cracking in high-temperature environments, have poor high-temperature resistance and anti-aging properties, which can lead to a decline in sealing performance and thus pose safety hazards. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an environmentally friendly hose for automobiles, which has advantages such as improved high-temperature resistance and anti-aging properties of the hose body. This solves the problem that traditional rubber hoses are prone to hardening and cracking under high-temperature environments, which can easily lead to safety hazards.

[0005] To achieve the above objectives, this application provides the following technical solution: an environmentally friendly hose for automobiles, comprising a hose body, the inner wall of which is covered with a protective layer, the protective layer comprising a high-performance thermoplastic elastomer layer and a barrier layer, the high-performance thermoplastic elastomer layer being made of polyolefin, the barrier layer being made of ethylene-vinyl alcohol copolymer, and the outer surface of the hose body being covered with a protective layer, the protective layer comprising a thermoplastic polyurethane layer and a fiber braided layer.

[0006] To improve the high-temperature resistance and anti-aging properties of the hose, the above solution involves heating and melting polyvinyl chloride (PVC) raw materials, then extruding them into a hose body. A protective layer is then applied to the inner wall of the hose body. This protective layer includes a high-performance thermoplastic elastomer layer and a barrier layer. The high-performance thermoplastic elastomer layer is made of polyolefin materials, with polyolefin as the base material, obtained by blending it with rubber. This high-performance thermoplastic elastomer layer has good weather resistance, chemical resistance, and low cost. The barrier layer is made of ethylene-vinyl alcohol copolymer, a high-barrier material that exhibits excellent blocking effects against gases, fragrances, and solvents. A high-temperature resistant barrier layer is added on top of the high-performance thermoplastic elastomer layer to improve the hose body's temperature resistance and anti-aging capabilities. Finally, a protective layer is applied to the surface of the hose body, including a thermoplastic polyurethane layer and a fiber braided layer. This further enhances the overall high-temperature resistance and anti-aging properties of the hose body, ensuring stable performance and a long service life under various environmental conditions.

[0007] Furthermore, the thermoplastic polyurethane layer is made of thermoplastic polyurethane.

[0008] The above scheme uses thermoplastic polyurethane as the material for the thermoplastic polyurethane layer. Because thermoplastic polyurethane has excellent wear resistance, tear resistance and weather resistance, it can maintain stable performance in harsh environments. Therefore, thermoplastic polyurethane can be selected as the main material of the protective layer.

[0009] Furthermore, the fiber braided layer is made of glass fiber and is embedded inside the thermoplastic polyurethane layer.

[0010] The above solution uses glass fiber as the material for the fiber braided layer. Glass fiber has advantages such as good chemical stability, good heat resistance, and relatively low cost. The glass fiber is embedded inside the thermoplastic polyurethane layer and a braided structure is adopted to improve the tear resistance and wear resistance of the hose body. Through the protection layer and the protective layer, the hose body can be protected inside and out, ensuring that the hose body can maintain stable performance and a long service life in various environments.

[0011] Furthermore, the hose body is made of polyvinyl chloride and is manufactured using a pipe extrusion process.

[0012] Based on the above scheme, the material selected for the hose body is polyvinyl chloride (PVC). PVC mainly has excellent impact and shock resistance, wear resistance, corrosion resistance, and environmental protection and energy saving advantages. Specifically, it can maintain stable performance and work normally in various environments. At the same time, PVC does not pollute the environment during production and use, and its price is relatively low, making it cost-effective. It can save a lot of maintenance costs in the long term. The hose body adopts the pipe extrusion process, which mainly includes steps such as raw material melting, extrusion molding, sizing and cooling, and traction and cutting, so that PVC can be processed into the final product.

[0013] Furthermore, the inner wall of the protective layer is provided with a seepage-proof layer, which includes polyethylene and polypropylene materials.

[0014] The above solution involves placing an impermeable layer on the inner wall of the protective layer. The impermeable layer is made of a mixture of polyethylene and polypropylene, which can prevent external liquids from penetrating into the hose body and prevent external contamination of the purity of the fluid inside the hose body.

[0015] Furthermore, the impermeable layer is produced using a multi-layer co-extrusion process.

[0016] The above scheme employs a multi-layer co-extrusion process for the geomembrane. First, the two raw materials, polyethylene and ethylene-vinyl alcohol copolymer, need to undergo pretreatment such as drying and dehumidification to ensure their purity and dryness. Then, they enter the melt co-extrusion stage, undergoing blow molding, cooling and shaping, and traction winding. Finally, the geomembrane is manufactured through post-processing steps such as cutting, inspection, and packaging.

[0017] Furthermore, the inner wall of the hose body is fixedly inlaid with reinforcing ribs.

[0018] The above method embeds the reinforcing ribs inside the hose body, thereby positioning the reinforcing ribs and improving the tensile strength and pressure resistance of the hose body.

[0019] Furthermore, the reinforcing rib is in the shape of a spiral metal wire, and the material of the reinforcing rib is stainless steel.

[0020] The above-mentioned design incorporates a spiral metal wire that wraps around the inside of the hose body. The reinforcing rib is made of stainless steel, which has high corrosion resistance and greatly improves the tensile strength and pressure resistance of the hose body.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This environmentally friendly automotive hose incorporates components such as a high-performance thermoplastic elastomer layer, a barrier layer, a thermoplastic polyurethane layer, and a fiber braided layer. A protective layer covers the inner wall of the hose body, while a protective layer covers the surface. The protective layer uses a high-performance thermoplastic elastomer layer and a barrier layer, while the protective layer uses a thermoplastic polyurethane layer and a fiber braided layer. This significantly improves the hose's high-temperature resistance and anti-aging properties, ensuring stable performance and a long service life in various environments. Furthermore, the internal reinforcing ribs, made of spiral metal wire and stainless steel, provide high corrosion resistance while greatly enhancing the hose's tensile strength and pressure resistance. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0024] Figure 2 This is the overall main view structure diagram of this application;

[0025] Figure 3 This is a structural diagram of the reinforcing ribs in this application;

[0026] Figure 4 This is a diagram of the protective layer structure of this application;

[0027] Figure 5 This is a cross-sectional structural diagram of the protective layer in this application.

[0028] In the picture:

[0029] 1. Hose body; 2. Protective layer; 201. High-performance thermoplastic elastomer layer; 202. Barrier layer; 3. Protective layer; 301. Thermoplastic polyurethane layer; 302. Fiber braided layer; 4. Leak-proof layer; 5. Reinforcing ribs. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 2 , Figure 4 and Figure 5An environmentally friendly automotive hose in this embodiment includes a hose body 1. The inner wall of the hose body 1 is covered with a protective layer 2. The protective layer 2 includes a high-performance thermoplastic elastomer layer 201 and a barrier layer 202. The high-performance thermoplastic elastomer layer 201 is made of polyolefin, and the barrier layer 202 is made of ethylene-vinyl alcohol copolymer. The outer surface of the hose body 1 is covered with a protective layer 3. The protective layer 3 includes a thermoplastic polyurethane layer 301 and a fiber braided layer 302.

[0032] Please see Figure 5 The thermoplastic polyurethane layer 301 is made of thermoplastic polyurethane. The thermoplastic polyurethane layer 301 is made of thermoplastic polyurethane. Because thermoplastic polyurethane has excellent wear resistance, tear resistance and weather resistance, it can maintain stable performance in harsh environments. Therefore, thermoplastic polyurethane can be selected as the main material of the protective layer 3.

[0033] Please see Figure 5 The fiber braided layer 302 is made of glass fiber and is embedded inside the thermoplastic polyurethane layer 301. Glass fiber has advantages such as good chemical stability, good heat resistance and relatively low cost. By embedding glass fiber inside the thermoplastic polyurethane layer 301 and adopting a braided structure, the tear resistance and wear resistance of the hose body 1 are improved. Through the protection layer 2 and the protective layer 3, the hose body 1 is protected inside and out, which can ensure that the hose body 1 can maintain stable performance and long service life in various environments.

[0034] Please see Figure 1 and Figure 2 The hose body 1 is made of polyvinyl chloride (PVC). The hose body 1 is manufactured using a pipe extrusion process. PVC is chosen because it possesses excellent impact and shock resistance, wear resistance, corrosion resistance, and environmental friendliness and energy efficiency. Specifically, it maintains stable performance and can function normally in various environments. Furthermore, PVC does not pollute the environment during production and use, and its relatively low price makes it cost-effective. Long-term use can save significant maintenance costs. The hose body 1 is manufactured using a pipe extrusion process, which mainly includes steps such as raw material melting, extrusion molding, sizing and cooling, and traction and cutting, enabling PVC to be processed into the desired product.

[0035] Please see Figure 1 , Figure 2 and Figure 3The inner wall of the protective layer 2 is provided with a seepage-proof layer 4, which is made of polyethylene and polypropylene. The seepage-proof layer 4 is made of polyethylene and polypropylene and is placed on the inner wall of the protective layer 2. It can prevent external liquids from penetrating into the hose body 1 and prevent external contamination of the purity of the fluid inside the hose body 1.

[0036] Please see Figure 1 , Figure 2 and Figure 3 The seepage barrier layer 4 adopts a multi-layer co-extrusion process. First, the two raw materials, polyethylene and ethylene-vinyl alcohol copolymer, need to undergo pretreatment such as drying and dehumidification to ensure their purity and dryness. Then, they enter the melt co-extrusion stage, and go through blow molding, cooling and shaping and traction winding steps. Finally, through post-processing steps such as cutting, inspection and packaging, the seepage barrier layer 4 is manufactured.

[0037] Please see Figure 1 and Figure 3 The inner wall of the hose body 1 is fixedly inlaid with a reinforcing rib 5. The reinforcing rib 5 is inlaid inside the hose body 1 to achieve the positioning of the reinforcing rib 5. The reinforcing rib 5 can improve the tensile strength and pressure resistance of the hose body 1.

[0038] Please see Figure 1 and Figure 3 The reinforcing rib 5 is in the shape of a spiral metal wire and is made of stainless steel. The spiral metal wire can be wrapped inside the hose body 1. The stainless steel material of the reinforcing rib 5 has high corrosion resistance and greatly improves the tensile strength and pressure resistance of the hose body 1.

[0039] This embodiment of an environmentally friendly automotive hose incorporates components such as a high-performance thermoplastic elastomer layer 201, a barrier layer 202, a thermoplastic polyurethane layer 301, and a fiber braided layer 302. A protective layer 2 covers the inner wall of the hose body 1, and a protective layer 3 covers the surface of the hose body 1. The protective layer 2 uses the high-performance thermoplastic elastomer layer 201 and the barrier layer 202, while the protective layer 3 uses the thermoplastic polyurethane layer 301 and the fiber braided layer 302. This significantly improves the high-temperature resistance and anti-aging properties of the hose body 1, enabling it to maintain stable performance and a long service life under various environments. Furthermore, by embedding reinforcing ribs 5 inside the hose body 1, using spiral metal wires made of stainless steel, it possesses high corrosion resistance while greatly improving the tensile strength and pressure resistance of the hose body 1.

[0040] It should be noted that the impermeable layer 4 is made of polyethylene and ethylene-vinyl alcohol copolymer through a multi-layer co-extrusion process, which can prevent external liquids and other contaminants from entering the interior of the hose body 1 and ensure the purity of the fluid inside the hose body 1.

[0041] The working principle of the above embodiments is as follows:

[0042] By covering the inner wall of the hose body 1 with a protective layer 2 and the surface of the hose body 1 with a protective layer 3, the protective layer 2, which uses a high-performance thermoplastic elastomer layer 201 and a barrier layer 202, can improve the temperature resistance and anti-aging ability of the hose body 1. The protective layer 3, which uses a thermoplastic polyurethane layer 301 and a fiber braided layer 302, significantly improves the high temperature resistance and anti-aging performance of the hose body 1 in conjunction with the protective layer 2, so that the hose body 1 can maintain stable performance and long service life in various environments. By using a multi-layer co-extrusion process to make a seepage-proof layer 4 from polyethylene and ethylene-vinyl alcohol copolymer, and placing the seepage-proof layer 4 on the inner wall of the protective layer 2, it can prevent external liquids and other contaminants from entering the hose body 1, ensuring the purity of the fluid inside the hose body 1. By embedding reinforcing ribs 5 inside the hose body 1, using spiral metal wires, and since the reinforcing ribs 5 are made of stainless steel, which has high corrosion resistance, the tensile strength and pressure resistance of the hose body 1 can be greatly improved.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly flexible hose for automobiles, comprising a hose body (1), characterized in that: The inner wall of the hose body (1) is covered with a protective layer (2), which includes a high-performance thermoplastic elastomer layer (201) and a barrier layer (202). The high-performance thermoplastic elastomer layer (201) is made of polyolefin, and the barrier layer (202) is made of ethylene-vinyl alcohol copolymer. The outer surface of the hose body (1) is covered with a protective layer (3), which includes a thermoplastic polyurethane layer (301) and a fiber braided layer (302).

2. The environmentally friendly flexible hose for automobiles according to claim 1, characterized in that: The thermoplastic polyurethane layer (301) is made of thermoplastic polyurethane.

3. The environmentally friendly flexible hose for automobiles according to claim 2, characterized in that: The fiber braided layer (302) is made of glass fiber and is embedded inside the thermoplastic polyurethane layer (301).

4. The environmentally friendly flexible hose for automobiles according to claim 1, characterized in that: The hose body (1) is made of polyvinyl chloride and is manufactured using a pipe extrusion process.

5. The environmentally friendly flexible hose for automobiles according to claim 1, characterized in that: The inner wall of the protective layer (2) is provided with a seepage-proof layer (4), which includes polyethylene material and polypropylene material.

6. The environmentally friendly flexible hose for automobiles according to claim 5, characterized in that: The impermeable layer (4) is produced by multi-layer co-extrusion process.

7. The environmentally friendly flexible hose for automobiles according to claim 1, characterized in that: The inner wall of the hose body (1) is fixedly inlaid with reinforcing ribs (5).

8. The environmentally friendly flexible hose for automobiles according to claim 7, characterized in that: The reinforcing rib (5) is in the shape of a spiral metal wire and is made of stainless steel.

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