An anti-vibration and fire-retardant foam tape for automobile pipeline

Abstract

The utility model relates to an anti-seismic and flame-retardant foam tape for automobile pipeline, belonging to the technical field of anti-seismic and flame-retardant foam tape. The anti-seismic and flame-retardant foam tape for automobile pipeline comprises a release layer, an anti-seismic foam core layer and a flame-retardant adhesive layer which are sequentially coated from inside to outside. The anti-seismic foam core layer is provided with a first anti-seismic layer, a second anti-seismic layer and a third anti-seismic layer from inside to outside. The porosities of the first anti-seismic layer, the second anti-seismic layer and the third anti-seismic layer decrease in turn. The application realizes the gradient optimization of the anti-seismic performance by setting the first, second and third anti-seismic layers and adopting the design of porosities decreasing in turn. The three-layer gradient design of the anti-seismic foam core layer can adapt to the vibration absorption requirements of different frequency bands in a targeted manner, avoiding the defect that a single structure is difficult to consider the anti-seismic performance of all frequency bands. The flame-retardant adhesive layer takes into account the dual functions of interlayer fixation and flame-retardant protection, so that the layers of structure are closely adhered, and the overall flame-retardant basic performance is improved.

Description

Technical Field

[0001] This utility model relates to a shock-resistant and flame-retardant foam tape for automotive piping, belonging to the technical field of shock-resistant and flame-retardant foam tape. Background Technology

[0002] As a core component for power transmission and fluid circulation in a vehicle, automotive piping is widely distributed in complex working areas such as the engine compartment. Its operational stability directly affects the safety performance and service life of the entire vehicle. During vehicle operation, piping must continuously withstand multi-frequency impacts from engine vibration and road bumps, while also resisting the high-temperature environment, oil corrosion, and potential fire hazards within the engine compartment. This places stringent comprehensive performance requirements on the protective foam tape covering the surface of the piping.

[0003] Existing automotive piping foam tapes generally suffer from insufficient performance adaptability. Regarding vibration resistance, most products employ a single-pore structure buffer layer design, making it difficult to simultaneously address the absorption needs of vibrations across different frequency bands. They either have limited buffering effect on low-frequency vibrations or are prone to structural deformation under high-frequency vibrations, leading to a decline in vibration resistance over long-term use and accelerated pipe wear. In terms of flame retardant protection, existing products have relatively simple flame retardant systems, often relying on the addition of a single flame retardant material, making it difficult to achieve comprehensive flame retardant protection. Furthermore, some products lack dedicated wear-resistant protective structures, making them susceptible to friction damage under complex operating conditions, thus losing their protective function.

[0004] Meanwhile, the interlayer structure design of existing foam tapes is not sufficiently rational. Some products focus solely on adhesive strength in the bonding layer, neglecting the synergistic improvement of flame retardant performance, leading to rapid failure under fire risks. Other products use inappropriate release layer materials, resulting in either poor release performance causing construction difficulties or ineffective protection of the adhesive layer's adhesion, impacting the user experience. Furthermore, most products have not undergone layered functional optimization to meet the actual needs of pipeline protection, making it difficult to meet the long-term usage requirements of automotive pipelines in terms of comprehensive performance such as shock resistance, flame retardancy, abrasion resistance, and environmental resistance, thus hindering the improvement of automotive pipeline protection levels. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a shock-resistant and flame-retardant foam tape for automotive piping.

[0006] An anti-vibration and flame-retardant foam tape for automotive piping includes a release layer, an anti-vibration foam core layer, and a flame-retardant adhesive layer, which are sequentially wrapped from the inside out. The anti-vibration foam core layer is provided with a first anti-vibration layer, a second anti-vibration layer, and a third anti-vibration layer from the inside out, and the porosity of the first anti-vibration layer, the second anti-vibration layer, and the third anti-vibration layer decreases sequentially.

[0007] Through the above technical solution, this application achieves gradient optimization of seismic performance by setting up a first, second, and third seismic-resistant layer with progressively decreasing porosity. The release layer provides a fundamental guarantee for product construction, effectively protecting the integrity of the inner structure; the three-layer gradient design of the seismic-resistant foam core layer can specifically adapt to the vibration absorption needs of different frequency bands, avoiding the shortcomings of a single structure that cannot adequately address seismic resistance across the entire frequency range; the flame-retardant adhesive layer combines the dual functions of interlayer fixation and flame-retardant protection, ensuring a tight fit between each layer while improving the overall flame-retardant performance. The entire layered structure has a clear logic, with each layer complementing the others, forming a synergistic system of construction assurance, gradient seismic resistance, and flame-retardant adhesive bonding, laying the core framework for subsequent performance optimization.

[0008] Furthermore, the first seismic-resistant layer is provided with a first seismic-resistant hole with a closed-cell structure, the hole having a diameter of 0.8-1.2 mm and a density of 60-80 kg / m³. 3 The porosity is 75-80%.

[0009] Through the above technical solutions, this application has precisely optimized the functional positioning of the inner layer of the seismic-resistant foam core layer, and the selection of the closed-cell structure has a clear technical logic. The closed-cell structure itself has good structural stability and anti-permeability performance, which can prevent impurities such as oil and water vapor from seeping into the seismic-resistant layer, ensuring the stability of long-term seismic performance. As the innermost layer of the seismic-resistant foam core layer, the first seismic-resistant layer is directly bonded to the release layer. Its closed-cell structure can protect its own structure from damage during construction, while providing stable foundation support for subsequent vibration absorption. In addition, the buffering characteristics of the closed-cell structure are consistent with the overall design of decreasing porosity, which can form a synergy with the subsequent second and third seismic-resistant layers, giving priority to the absorption of vibrations in specific frequency bands. This further refines the functional division of gradient seismic resistance, making the performance of the entire seismic-resistant foam core layer more targeted and improving the reliability of the overall seismic-resistant system.

[0010] Furthermore, the second seismic-resistant layer is provided with a second seismic-resistant hole with a closed-cell structure. The pore diameter of the second seismic-resistant hole is 0.3-0.6 mm and the density is 90-110 kg / m³. 3 The porosity is 65-70%.

[0011] Through the above technical solution, the second seismic-resistant layer of this application serves as an intermediate transition layer within the seismic-resistant foam core layer. Its closed-cell structure design addresses both the buffer transition and structural support requirements. From a functional synergy perspective, the closed-cell structure of this layer is compatible with the closed-cell structure of the first seismic-resistant layer, enabling the smooth transfer and gradual absorption of vibration energy. This avoids vibration reflection caused by significant differences in the structures of adjacent layers, improving the continuity of gradient seismic resistance. Simultaneously, the stability of the closed-cell structure provides reliable support for the outer third seismic-resistant layer, preventing interlayer displacement of the entire seismic-resistant core layer under high-frequency vibrations. Compared to existing single-structure buffer layers, this technical solution, through precise structural design of the intermediate layer, fills the performance gaps between different seismic-resistant layers, resulting in a smooth gradient distribution of performance across the entire seismic-resistant foam core layer, further enhancing the adaptability and stability of vibration absorption across the entire frequency band. Furthermore, the third seismic-resistant layer is provided with a third seismic-resistant hole with a through-hole structure. The diameter of the third seismic-resistant hole is 0.1-0.2 mm and the density is 120-140 kg / m³. 3 The porosity is 55-60%.

[0012] Through the above technical solution, the structure of the third seismic-resistant layer in this application is differentiated, employing a through-hole structure to complement the closed-cell structure of the first two layers, serving as a crucial final optimization of the entire gradient seismic-resistant system. This technical solution overcomes the limitations of existing products with a single pore structure, precisely selecting the through-hole structure based on the outer layer positioning of the third seismic-resistant layer. The through-hole structure possesses excellent high-frequency vibration absorption capabilities, rapidly dissipating the energy generated by high-frequency vibrations. Simultaneously, its structural characteristics enhance the air permeability of the seismic-resistant layer, reducing moisture accumulation between layers due to temperature changes and ensuring long-term stability. As the outermost layer of the seismic-resistant foam core, the third seismic-resistant layer is directly bonded to the flame-retardant adhesive layer. The through-hole structure increases the bonding area with the adhesive layer, improving the strength of the interlayer bond. Furthermore, the combination of the through-hole structure and the closed-cell structure of the first two layers forms a differentiated gradient structure of closed-cell-closed-cell-through-hole, enabling the entire seismic-resistant foam core layer to adapt to vibration requirements in different frequency bands, achieving efficient absorption of vibrations across the entire frequency range and significantly improving the overall seismic performance of the product. Furthermore, the automotive piping anti-vibration and flame-retardant foam tape also includes a flame-retardant and wear-resistant protective layer, which is disposed on the outside of the flame-retardant adhesive layer and has a thickness of 0.10-0.20mm.

[0013] Through the aforementioned technical solution, this application adds a flame-retardant and wear-resistant protective layer, explicitly placing it outside the flame-retardant adhesive layer. This solution represents a comprehensive upgrade to the product's protective performance. Existing products generally lack a dedicated wear-resistant protective structure, making them prone to friction damage and protective failure under complex operating conditions. This technical solution precisely addresses this deficiency. The flame-retardant and wear-resistant protective layer forms the outermost protective barrier of the product. On one hand, it enhances the product's wear resistance, resisting frictional damage during pipeline installation and use; on the other hand, its flame-retardant properties synergize with the flame-retardant adhesive layer, constructing a dual flame-retardant system of outer protection and middle adhesion, improving overall flame-retardant reliability. From a structural perspective, this layer, placed outside the flame-retardant adhesive layer, directly resists external environmental erosion, protecting the inner shock-absorbing foam core layer and adhesive layer from damage, extending the product's service life. This technical solution upgrades the product from basic protection to comprehensive protection, further adapting to the complex operating conditions of automotive pipelines.

[0014] Furthermore, the flame-retardant adhesive layer is a flame-retardant acrylic pressure-sensitive adhesive layer with a uniform thickness of 0.15-0.25 mm.

[0015] Through the above technical solution, this application clarifies that the specific material of the flame-retardant adhesive layer is a flame-retardant acrylic pressure-sensitive adhesive. This solution represents a precise optimization of the synergistic performance of interlayer bonding and flame retardancy. Existing products often suffer from a difficulty in simultaneously achieving both adhesive strength and flame retardant performance in their adhesive layers. This technical solution addresses this pain point through precise material selection. The flame-retardant acrylic pressure-sensitive adhesive possesses excellent adhesive properties, enabling a firm bond between the shock-absorbing foam core layer and the outer structure, preventing interlayer delamination under long-term vibration. Simultaneously, its inherent flame-retardant properties form a synergistic flame-retardant system with the shock-absorbing foam core layer and the flame-retardant wear-resistant protective layer, filling the gap in flame-retardant performance of existing adhesive layers. Furthermore, acrylic materials exhibit good environmental resistance, adapting to the high-temperature and oily environment of the engine compartment, ensuring long-term stability of adhesive performance. This technical solution transforms the adhesive layer from merely a connector into a crucial component of the overall flame-retardant protection system, enhancing the overall performance stability of the product.

[0016] Furthermore, the release layer is a silicone release paper with a thickness of 0.10-0.15 mm and a release force of 5-10 g / 25 mm.

[0017] Through the above technical solution, this application clarifies that the release layer material is silicone release paper. This solution optimizes and upgrades the product's ease of construction and inner layer protection performance. As the innermost layer of the product, the core function of the release layer is to protect the adhesion of the adhesive layer and ensure smooth construction. Some existing products often experience difficulties in release or damage to the adhesive layer's adhesion due to improper selection of the release layer material. Silicone release paper possesses excellent release properties, enabling easy removal and improving construction efficiency. Simultaneously, it effectively protects the adhesion of the inner adhesive layer during storage and transportation, preventing it from failing due to external contamination or friction. Furthermore, silicone release paper has good chemical stability and will not react with the inner shock-absorbing foam core layer, ensuring the overall stability of the product's performance.

[0018] By means of the above solution, this utility model has at least the following advantages: First, this invention achieves precise absorption and buffering of multi-frequency vibrations through a three-layer gradient structure design of the shock-resistant foam core layer, effectively solving the problem of insufficient shock-resistant adaptability of existing products with single-pore structures. Specifically, the inner, middle, and outer shock-resistant layers are differentiated by a decreasing porosity gradient design, each specifically adapting to the vibration requirements of different frequency bands, forming a coherent gradient shock-resistant system. This design can smoothly transmit and gradually dissipate vibration energy, avoiding pipe wear caused by vibration reflection or buffer failure, and significantly improving the operational stability of automotive pipelines under complex driving conditions. Simultaneously, each shock-resistant layer adopts an appropriate pore structure type, ensuring its own structural stability, avoiding performance degradation under long-term vibration, further extending the service life of the pipelines, and providing a reliable guarantee for the stable operation of the vehicle's power transmission and fluid circulation.

[0019] Secondly, this invention constructs a synergistic flame-retardant protection system comprising a flame-retardant adhesive layer, a flame-retardant and wear-resistant protective layer, and a gradient anti-vibration core layer, significantly improving overall protection reliability. The flame-retardant adhesive layer not only ensures a firm bond between each layer, but its own flame-retardant properties also complement the flame-retardant components of the anti-vibration core layer. The added flame-retardant and wear-resistant protective layer forms an outer protective barrier, effectively resisting external friction damage and fire erosion. This comprehensive protective design fills the gaps in existing products' single flame-retardant protection and lack of wear-resistant protection, enabling it to adapt to harsh environments such as high temperatures and oil contamination in engine compartments. Through the synergistic effect of each protective structure, the product effectively reduces fire risk, prevents external environmental erosion of the internal structure, ensures long-term stable protective performance, and significantly improves the product's environmental adaptability and safety under complex working conditions.

[0020] Third, this utility model adopts a scientific layered structure consisting of a release layer, a shock-absorbing foam core layer, a flame-retardant adhesive layer, and a flame-retardant and wear-resistant protective layer. Each layer is functionally complementary and tightly connected, ensuring the stability and integrity of the overall structure. The release layer uses a suitable material with excellent release properties, allowing for easy removal without damaging the adhesive layer's adhesion, significantly improving construction convenience and reducing installation difficulty. The precise material selection of the flame-retardant adhesive layer ensures a strong bond between layers, preventing delamination over long-term use. Simultaneously, the overall structural design of the product takes into account the protection needs of different types of automotive pipelines, flexibly adapting to the covering and protection of various fuel lines, water lines, gas lines, etc., without requiring specific structural design adjustments. This high adaptability and convenient construction feature broadens the product's application range and enhances its market practicality and promotional value.

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the anti-vibration and flame-retardant foam tape for automotive piping.

[0024] In the figure; 1. Release layer; 2. Shock-resistant foam core layer; 21. First shock-resistant layer; 22. Second shock-resistant layer; 23. Third shock-resistant layer; 3. Flame-retardant adhesive layer; 4. Flame-retardant and wear-resistant protective layer. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0026] This utility model discloses a shock-resistant and flame-retardant foam tape for automotive piping. The tape employs a layered composite structure with layers sequentially wrapped from the inside out. The core structure is a basic combination of a release layer 1, a shock-resistant foam core layer 2, and a flame-retardant adhesive layer 3. A flame-retardant and wear-resistant protective layer 4 can be added according to actual protection requirements. The shock-resistant foam core layer 2 is an integrally molded gradient structure, consisting of a first shock-resistant layer 21, a second shock-resistant layer 22, and a third shock-resistant layer 23 sequentially arranged from the inside out. The three layers follow a design principle of decreasing porosity, specifically: the first shock-resistant layer 21 has a porosity of 75-80%, the second shock-resistant layer 22 has a porosity of 65-70%, and the third shock-resistant layer 23 has a porosity of 55-60%, forming a gradient shock-resistant system precisely adapted to multi-frequency vibrations. There are no obvious interface gaps between the shock-resistant layers; the integral molding process achieves a tight connection, ensuring the stable transmission and gradual absorption of vibration energy. Release layer 1 is tightly attached to the inner side of the first seismic layer 21, providing adhesive protection and construction convenience for the entire composite structure before construction. Flame-retardant adhesive layer 3 is tightly wrapped around the outer side of the third seismic layer 23, realizing a firm connection between the seismic foam core layer 2 and the external structure, while also undertaking the function of basic flame-retardant protection.

[0027] The first seismic-resistant layer 21 has a closed-cell structure with first seismic-resistant holes, the diameter of which is 0.8-1.2 mm and the density is 60-80 kg / m³. 3 The closed-cell structure effectively prevents the infiltration of external impurities, ensuring long-term stable seismic performance; the second seismic-resistant layer 22 has closed-cell structure second seismic-resistant pores with a pore diameter of 0.3-0.6mm and a density of 90-110kg / m³. 3 The closed-cell structure is compatible with the first seismic-resistant layer 21, achieving a smooth transition in gradient seismic resistance; the third seismic-resistant layer 23 has through-hole structures with a pore diameter of 0.1-0.2 mm and a density of 120-140 kg / m³. 3 The through-hole structure improves the high-frequency vibration absorption efficiency and enhances the bonding area with the flame-retardant adhesive layer 3. The flame-retardant adhesive layer 3 is made of flame-retardant acrylic pressure-sensitive adhesive with a thickness of 0.15-0.25mm, possessing excellent bonding strength and flame-retardant synergistic performance. The release layer 1 is made of silicone release paper with a thickness of 0.10-0.15mm and a release force of 5-10g / 25mm, possessing stable release performance, easily peelable without damaging the inner layer's adhesiveness. The compatibility of the materials and structural parameters of each layer ensures a synergistic improvement in overall performance.

[0028] When enhanced wear resistance and flame retardant protection are required, a flame retardant and wear-resistant protective layer 4 is added to the outside of the flame retardant adhesive layer 3. This protective layer has a thickness of 0.10-0.20mm, forming a complete four-layer protective structure. It is tightly bonded to the flame retardant adhesive layer 3, achieving firm fixation through the adhesiveness of the flame retardant adhesive layer 3. Together with the flame retardant adhesive layer 3 and the shock-absorbing foam core layer 2, it forms a comprehensive synergistic flame retardant system. The entire composite structure is formed through a step-by-step hot-pressing composite process. First, the three-layer structure of the shock-absorbing foam core layer 2 is foamed and formed as a whole. Then, the release layer 1 and the flame retardant adhesive layer 3 are laminated on both sides in sequence. If a flame retardant and wear-resistant protective layer 4 is added, the composite bonding of this layer is completed last, ensuring tight bonding between each layer and structural stability. The final product is an automotive pipeline protective foam tape with characteristics such as gradient shock resistance, synergistic flame retardancy, and convenient construction, suitable for the complex working conditions of various automotive pipelines.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A shock-resistant and flame-retardant foam tape for automotive piping, characterized in that, It includes a release layer (1), a shock-resistant foam core layer (2), and a flame-retardant adhesive layer (3) that are sequentially wrapped from the inside out. The shock-resistant foam core layer (2) is provided with a first shock-resistant layer (21), a second shock-resistant layer (22), and a third shock-resistant layer (23) from the inside out. The porosity of the first shock-resistant layer (21), the second shock-resistant layer (22), and the third shock-resistant layer (23) decreases sequentially.

2. The anti-vibration and flame-retardant foam tape for automotive piping according to claim 1, characterized in that, The first seismic-resistant layer (21) is provided with a first seismic-resistant hole with a closed-cell structure. The diameter of the first seismic-resistant hole is 0.8-1.2 mm and the density is 60-80 kg / m³. 3 The porosity is 75-80%.

3. The anti-vibration and flame-retardant foam tape for automotive piping according to claim 1, characterized in that, The second seismic-resistant layer (22) is provided with a second seismic-resistant hole with a closed-cell structure. The diameter of the second seismic-resistant hole is 0.3-0.6 mm and the density is 90-110 kg / m³. 3 The porosity is 65-70%.

4. The shock-resistant and flame-retardant foam tape for automotive piping according to claim 1, characterized in that, The third seismic-resistant layer (23) is provided with a third seismic-resistant hole with a through-hole structure. The diameter of the third seismic-resistant hole is 0.1-0.2 mm and the density is 120-140 kg / m³. 3 The porosity is 55-60%.

5. The shock-resistant and flame-retardant foam tape for automotive piping according to claim 1, characterized in that, The automotive piping anti-vibration and flame-retardant foam tape also includes a flame-retardant and wear-resistant protective layer (4), which is located on the outside of the flame-retardant adhesive layer (3) and has a thickness of 0.10-0.20 mm.

6. The shock-resistant and flame-retardant foam tape for automotive piping according to claim 1, characterized in that, The flame-retardant adhesive layer (3) is a flame-retardant acrylic pressure-sensitive adhesive layer with a thickness of 0.15-0.25 mm.

7. The shock-resistant and flame-retardant foam tape for automotive piping according to claim 1, characterized in that, The release layer (1) is a silicone release paper with a thickness of 0.10-0.15 mm and a release force of 5-10 g / 25 mm.

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