A thermal insulation felt structure with good durability

Abstract

The utility model discloses a good heat -preserving felt structure of durability relates to industrial heat -insulating material technical field, and the structure includes felt body, and the felt body includes from top to bottom sequentially laminated setting upper wear -resistant layer, heat -preserving core layer and lower wear -resistant layer. Its innovative place lies in, the heat -preserving core layer is combined in the inside to have reinforcing net layer, and the heat -preserving core layer is also embedded with the reinforcing grid of the field shape that is constituted by the interlacing of multiple reinforcing bars in the inside. The utility model discloses through the inside cooperative setting two -dimensional reinforcing net layer and one -dimensional field shape reinforcing grid of heat -preserving core layer, constitutes multidimensional composite reinforcing system, and combines acupuncture process and firmly composites each layer as an organic whole, and the tensile strength, the tear resistance, the delamination resistance and the bending fatigue performance of heat -preserving felt have been improved significantly, thereby effectively enhanced the overall durability of product.

Description

Technical Field

[0001] This utility model relates to the field of industrial thermal insulation materials technology, specifically a durable thermal insulation felt structure. Background Technology

[0002] Thermal insulation felt, a common flexible insulation material, is widely used for thermal insulation of pipelines, tanks, and equipment in industries such as petrochemicals, metallurgy, and power. It typically consists of a fiber-based insulation core layer and an outer protective layer, and features advantages such as low thermal conductivity, good flexibility, and easy installation.

[0003] However, the durability of existing thermal insulation felts is often unsatisfactory in practical use, mainly due to the following problems: 1. Poor tensile strength and tear resistance: The insulation felt is prone to tearing during installation, disassembly, or when subjected to external pulling forces. This is mainly because its structure relies primarily on the entanglement between fibers and lacks effective overall scaffold support, making it unable to effectively resist stress in the planar direction.

[0004] 2. Insufficient structural integrity and prone to delamination: Traditional multi-layer composite insulation felts typically use simple adhesives or light needle punching to bond the functional layers (such as the wear-resistant layer and the insulation core layer). During use, especially when subjected to bending, vibration, or drastic temperature changes, the layers are prone to separation and delamination, which not only affects the stability of the insulation effect but also further weakens the mechanical strength of the material.

[0005] Therefore, we propose a durable thermal insulation felt structure. Utility Model Content

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a durable thermal insulation felt structure. It consists of a multi-dimensional composite reinforcement structure formed by reinforcing mesh layers and a grid-shaped reinforcing mesh within the thermal insulation core layer, combined with a needle-punching process to achieve integrated composite structure. This synergistically improves the overall performance of the thermal insulation felt, including tensile strength, tear resistance, delamination resistance, and flexural fatigue resistance, thereby enhancing its durability and effectively solving the problems in the prior art.

[0007] (II) Technical Solution To achieve the above objectives, the technical solution adopted by this utility model is as follows: a durable thermal insulation felt structure, comprising a felt body, wherein the felt body includes an upper wear-resistant layer, a thermal insulation core layer, and a lower wear-resistant layer stacked sequentially from top to bottom; the thermal insulation core layer is composite with a reinforcing mesh layer, and the thermal insulation core layer is also embedded with a grid-shaped reinforcing mesh composed of multiple interwoven reinforcing ribs; the unit area mass of the reinforcing mesh layer is 30g / m². 2 ~ 120g / m 2The mesh size is 5mm ~ 25mm.

[0008] Preferably, in the grid-shaped reinforcing mesh, the cross-sectional diameter of a single reinforcing rib is 1mm to 4mm, and the side length of a single grid is 50mm to 200mm.

[0009] Preferably, the herringbone-shaped reinforcing mesh is bonded to the reinforcing mesh layer and bonded together using a needle-punching process, wherein the needle-punching density is 20 needles / cm. 2 ~ 80 stitches / cm 2 .

[0010] Preferably, the insulation core layer is made of ceramic fiber, glass wool, or rock wool, with a density of 60 kg / m³. 3 ~150kg / m 3 .

[0011] Preferably, the basis weight of the upper and lower wear-resistant layers is 100 g / m². 2 ~ 300g / m 2 .

[0012] Preferably, the overall thickness of the thermal insulation felt structure is 10mm to 50mm.

[0013] Preferably, the upper and lower wear-resistant layers are intertwined with the surface of the insulation core layer through a needle-punching process; simultaneously, the needles of the needle-punching process penetrate and hook the reinforcing mesh layer and the reinforcing ribs in the grid-shaped reinforcing grid, and allow some of the fibers of the insulation core layer to pass through the mesh of the reinforcing mesh layer, so that the upper wear-resistant layer, the insulation core layer, the reinforcing mesh layer, the grid-shaped reinforcing grid and the lower wear-resistant layer are combined into a whole felt body.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides a durable thermal insulation felt structure with the following advantages: 1. This durable thermal insulation felt structure innovatively incorporates a reinforcing mesh layer and a grid-like reinforcing grid within the insulation core layer, forming a multi-dimensional composite reinforcement system. The reinforcing mesh layer, acting as a two-dimensional planar skeleton, evenly distributes stress in the planar direction, effectively improving the overall tensile strength and tear resistance of the thermal insulation felt. Meanwhile, the grid-like reinforcing grid, composed of multiple interwoven reinforcing ribs, acts as a one-dimensional linear skeleton, effectively inhibiting and blocking crack propagation, and enhancing the insulation felt's resistance to bending fatigue and the strength of its edge areas. These two elements work together from different dimensions, mutually reinforcing each other, achieving comprehensive optimization and synergistic improvement of the thermal insulation felt's mechanical properties.

[0015] 2. This durable thermal insulation felt structure, through a preferred needle-punching process, firmly integrates the grid-like reinforcing mesh and the reinforcing mesh layer into a single integrated reinforcing skeleton embedded within the core layer. Simultaneously, the needles penetrate each layer, causing the fibers of the upper and lower wear-resistant layers to entangle and hook together with the core layer and reinforcing components. This allows the functional layers of the thermal insulation felt (upper wear-resistant layer, core layer, lower wear-resistant layer) and the internal reinforcing components (reinforcing mesh layer, grid-like reinforcing mesh) to combine into a dense and robust integral felt body, fundamentally overcoming the defect of traditional thermal insulation felts being prone to delamination and ensuring the long-term stability of the structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a durable thermal insulation felt structure according to this utility model.

[0017] Figure 2 This is a schematic diagram of the structural layers of a durable thermal insulation felt structure according to this utility model.

[0018] Figure 3 This is a schematic diagram of the reinforcing mesh layer and reinforcing ribs in a durable thermal insulation felt structure according to this utility model.

[0019] In the diagram: 1. Felt body; 2. Upper wear-resistant layer; 3. Thermal insulation core layer; 4. Lower wear-resistant layer; 5. Reinforcing mesh layer; 6. Reinforcing ribs. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-3 As shown, this utility model provides a durable thermal insulation felt structure, including a felt body 1.

[0022] The felt body 1 includes an upper wear-resistant layer 2, a heat-insulating core layer 3, and a lower wear-resistant layer 4, which are stacked from top to bottom. The heat-insulating core layer 3 is composite with a reinforcing mesh layer 5, and the heat-insulating core layer 3 is also embedded with a grid-shaped reinforcing mesh composed of multiple reinforcing ribs 6.

[0023] In one specific embodiment of this utility model: Reinforcing layer 5 uses fiberglass mesh fabric with a unit area mass of 80g / m². 2 The mesh size is 10mm. The reinforcing mesh layer 5, as a two-dimensional planar reinforcing skeleton, is evenly laid inside the insulation core layer 3 to bear and disperse the stress in the planar direction, effectively improving the overall tensile strength and tear resistance.

[0024] The grid-shaped reinforcing mesh is composed of interwoven aramid reinforcing ribs 6. The cross-sectional diameter of a single reinforcing rib 6 is 2mm, and the side length of a single grid cell is 100mm. This mesh, as a one-dimensional linear skeleton, is embedded in the insulation core layer 3, which can effectively inhibit and block the propagation of cracks and enhance the bending fatigue resistance and edge strength of the insulation felt.

[0025] The grid-shaped reinforcing mesh and the reinforcing mesh layer 5 are attached vertically within the insulation core layer 3 and bonded together using a needle-punching process. The needle-punching density used is 40 needles / cm². 2 These process parameters ensure that the reinforcing ribs 6 and the reinforcing mesh layer 5 are fully hooked and fixed, while forming dense fiber entanglements inside the insulation core layer.

[0026] The insulation core layer 3 is made of ceramic fiber with a density of 100 kg / m³. 3 This material ensures excellent thermal insulation performance, while its fiber properties facilitate needle punching.

[0027] Both the upper wear-resistant layer 2 and the lower wear-resistant layer 4 are made of high-silica glass fiber needle-punched felt with a basis weight of 200g / m². 2 The wear-resistant layer primarily provides surface wear resistance, temperature resistance, and protection.

[0028] The overall thickness of the thermal insulation felt structure is 30mm.

[0029] The composite process is as follows: First, the lower wear-resistant layer 4 is laid on the workbench of the needle punching machine; then, a pre-formed layer of half the thickness of the insulation core layer 3 (ceramic fiber cotton) is laid; next, the reinforcing mesh layer 5, the grid-shaped reinforcing mesh, and the remaining half thickness of the insulation core layer 3 pre-formed layer are laid in sequence; finally, the upper wear-resistant layer 2 is covered.

[0030] Using a needle-piercing machine and specific-sized needles, at a rate of 40 needles / cm... 2 The density was repeatedly needled. During the acupuncture process: The needle penetrates vertically through the entire laminated structure, pulling and entangled the fibers of the upper wear-resistant layer 2 and the lower wear-resistant layer 4 with the fibers of the heat-insulating core layer 3, so that the three are tightly bonded together.

[0031] At the same time, the needles penetrate and hook the reinforcing mesh layer 5 and the reinforcing ribs 6 in the grid-shaped reinforcing mesh, so that they are firmly embedded inside the insulation core layer 3.

[0032] Some of the fibers of the insulation core layer 3 pass through the mesh of the reinforcing mesh layer 5 under the action of needles, further strengthening the bond between the components.

[0033] Finally, through the above-mentioned needle punching process, the upper wear-resistant layer 2, the heat-insulating core layer 3, the reinforcing mesh layer 5, the grid-shaped reinforcing mesh and the lower wear-resistant layer 4 are combined into a dense and integral felt body 1.

[0034] Effect: The thermal insulation felt structure obtained in this embodiment forms a multi-dimensional composite reinforcement system within the thermal insulation core layer 3 by reinforcing mesh layer 5 and grid-shaped reinforcing mesh, and achieves integrated composite by high-density needle punching process. This synergistically and significantly improves the tensile strength, tear resistance, delamination resistance and bending fatigue resistance of the product, thereby enhancing the durability and service life of the thermal insulation felt.

[0035] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., 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.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A durable thermal insulation felt structure, comprising a felt body (1), characterized in that: The felt body (1) comprises an upper wear-resistant layer (2), a heat-insulating core layer (3), and a lower wear-resistant layer (4) stacked sequentially from top to bottom; the heat-insulating core layer (3) is incorporating a reinforcing mesh layer (5), and the heat-insulating core layer (3) is also embedded with a grid-shaped reinforcing mesh composed of multiple reinforcing ribs (6); the unit area mass of the reinforcing mesh layer (5) is 30g / m². 2 ~ 120g / m 2 The mesh size is 5mm ~ 25mm.

2. The durable thermal insulation felt structure according to claim 1, characterized in that: In the grid-shaped reinforcing mesh, the cross-sectional diameter of a single reinforcing rib (6) is 1mm to 4mm, and the side length of a single grid in the grid-shaped reinforcing mesh is 50mm to 200mm.

3. The durable thermal insulation felt structure according to claim 2, characterized in that: The grid-shaped reinforcing mesh is attached to the reinforcing mesh layer (5) and bonded together by a needle punching process, wherein the needle punching density is 20 needles / cm. 2 ~ 80 stitches / cm 2 .

4. A durable thermal insulation felt structure according to any one of claims 1 to 3, characterized in that: The insulation core layer (3) is made of ceramic fiber, glass wool or rock wool, with a density of 60 kg / m³. 3 ~ 150kg / m 3 .

5. A durable thermal insulation felt structure according to any one of claims 1 to 3, characterized in that: The basis weight of the upper wear-resistant layer (2) and the lower wear-resistant layer (4) is 100 g / m. 2 ~ 300g / m 2 .

6. A durable thermal insulation felt structure according to any one of claims 1 to 3, characterized in that: The overall thickness of the thermal insulation felt structure is 10mm to 50mm.

7. The durable thermal insulation felt structure according to claim 3, characterized in that: The upper wear-resistant layer (2) and the lower wear-resistant layer (4) are intertwined with the surface of the heat-insulating core layer (3) by needle punching process; at the same time, the needle of the needle punching process penetrates and hooks the reinforcing mesh layer (5) and the reinforcing ribs (6) in the grid-shaped reinforcing mesh, and makes some of the fibers of the heat-insulating core layer (3) pass through the mesh of the reinforcing mesh layer (5), so that the upper wear-resistant layer (2), the heat-insulating core layer (3), the reinforcing mesh layer (5), the grid-shaped reinforcing mesh and the lower wear-resistant layer (4) are combined into a whole felt body (1).

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