Composite surface structure of hard mat

Abstract

The utility model relates to hard felt technical field, and disclose a kind of hard felt of composite surface structure, including connecting protrusion, fixedly connected in carbon cloth bottom;Rough surface one, fixedly connected in carbon cloth bottom, rough surface one is equipped in the outside of connecting protrusion;Rough surface two, fixedly connected in carbon felt top;Groove, set up in carbon felt and rough surface two on. Carbon felt and carbon cloth are quickly aligned, make connecting protrusion completely embed groove, rough surface one and rough surface two are tightly adhered to each other, glue layer is distributed between the contact surface of rough surface one and rough surface two, complete preliminary fixation, then the component of preassembled is placed into hot press, make glue layer melt and fully soak the porosity of rough surface one and rough surface two, solidify and form firm adhesive layer after cooling, while compacting interlayer structure, reduce gap, then pass through needle-punching mechanism and form interlayer fiber " bridging " by fiber penetrating the connecting area of carbon felt and carbon cloth, further lock two layers of structure, improve overall stability.

Description

Technical Field

[0001] This utility model relates to the field of hard felt technology, specifically a hard felt with a composite surface structure. Background Technology

[0002] Carbon fiber felt is a type of felt made from carbon fiber. Because 90% of carbon felt is void, it has excellent thermal insulation performance in vacuum or inert atmosphere, especially under high temperature conditions. It is used in various industries. Carbon felt is lightweight, has a low specific heat capacity, is soft, has good thermal insulation, and is easy to handle. It is particularly suitable for intermittently operating high-temperature vacuum furnaces, which can save a lot of energy. It is an excellent thermal insulation material for vacuum metallurgical industrial furnace equipment.

[0003] In existing rigid felts, the carbon cloth and felt are only chemically bonded together by an adhesive layer, without mechanical restraint or fiber reinforcement. When subjected to vibration, thermal expansion and contraction, or external impact, the adhesive layer is easily peeled off from the smooth contact surface, causing the carbon cloth and felt to completely separate and become unusable. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a rigid felt with a composite surface structure, which has the advantage of a more stable connection. It solves the problem that in existing rigid felts, the carbon cloth and felt rely solely on the chemical bonding of the adhesive layer, without mechanical restraint and fiber reinforcement. When subjected to vibration, thermal expansion and contraction, or external impact, the adhesive layer is easily peeled off from the smooth contact surface, resulting in the complete separation of the carbon cloth and felt and rendering it unusable.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a rigid felt with a composite surface structure, comprising a main body component, wherein the main body component includes: Carbon felt, with carbon cloth on top; A connecting component is provided on the carbon felt and the carbon cloth, the connecting component comprising: A connecting protrusion is fixedly connected to the bottom of the carbon cloth; One rough surface is fixedly connected to the bottom of the carbon cloth, and the rough surface is fitted onto the outside of the connecting protrusion; Rough surface two is fixedly connected to the top of the carbon felt; Grooves are formed on the carbon felt and the rough surface two; An adhesive layer is disposed on the top of the second rough surface.

[0006] Preferably, multiple sets of the connecting protrusions and the grooves are symmetrically arranged.

[0007] Preferably, a guide groove is provided at the top edge of the rough surface two.

[0008] Preferably, the top of the adhesive layer is symmetrically and fixedly connected with positioning protrusions, and the bottom of the carbon cloth is symmetrically provided with positioning grooves.

[0009] Preferably, the outer sidewall of the carbon cloth is symmetrically and fixedly connected with a shielding layer.

[0010] (III) Beneficial Effects Compared with the prior art, the present invention provides a rigid felt with a composite surface structure, which has the following beneficial effects: This rigid felt offers the advantage of a more stable connection. The carbon felt and carbon cloth are quickly aligned, ensuring the connecting protrusions are fully embedded in the grooves. At this point, rough surface one and rough surface two are tightly adhered, with the adhesive layer distributed between the contact surfaces of rough surface one and rough surface two, completing the initial fixation. The pre-assembled components are then placed in a hot press, and the appropriate temperature, pressure, and holding time for the adhesive are set, allowing the adhesive layer to melt and fully impregnate the pores of rough surface one and rough surface two. After cooling and curing, a strong adhesive layer is formed, while simultaneously compacting the interlayer structure to reduce voids. Finally, the hot-pressed and cured carbon felt is then joined to… Carbon cloth is fed into a needle-punching device, where the needle-punching mechanism penetrates the connection area between the carbon felt and the carbon cloth, forming an interlayer fiber "bridge." This further locks the two-layer structure, improving overall stability and providing triple locking to prevent separation, doubling the connection stability: the mechanical interlocking of the connecting protrusions and grooves forms a physical latch, limiting displacement; rough surfaces one and two increase the adhesive contact area and adsorption force, preventing adhesive layer peeling; and the needle-punching forms a fiber bridge, locking the interlayer structure. These three factors work together to completely solve the problem of ordinary adhesive bonding relying solely on the adhesive layer and being prone to detachment due to vibration and thermal expansion and contraction. This solves the problem in existing rigid felts where the carbon cloth and felt rely solely on chemical bonding with an adhesive layer, lacking mechanical restraint and fiber reinforcement. Under vibration, thermal expansion and contraction, or external impact, the adhesive layer easily peels off from the smooth contact surface, leading to complete separation of the carbon cloth and felt, rendering it unusable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the carbon felt and carbon cloth separation structure in this utility model; Figure 3 This is a schematic diagram of the carbon cloth and rough surface structure in this utility model; Figure 4 This is a bottom view of the carbon felt structure in this utility model.

[0012] In the picture: 1. Main components; 11. Carbon felt; 12. Carbon cloth; 2. Connecting component; 21. Connecting protrusion; 22. Rough surface one; 23. Rough surface two; 24. Groove; 25. Adhesive layer; 3. Positioning protrusion; 31. Positioning groove; 4. Flow guide groove; 5. Shielding layer. Detailed Implementation

[0013] 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.

[0014] Example 1 See Figure 1-4 A composite surface structure rigid felt includes a main component 1, which includes: a carbon felt 11 with a carbon cloth 12 on its top; a connecting component 2 is provided on the carbon felt 11 and the carbon cloth 12, the connecting component 2 including: a connecting protrusion 21 fixedly connected to the bottom of the carbon cloth 12; a rough surface 22 fixedly connected to the bottom of the carbon cloth 12, the rough surface 22 being sleeved on the outside of the connecting protrusion 21; a rough surface 23 fixedly connected to the top of the carbon felt 11; a groove 24 formed on the carbon felt 11 and the rough surface 23; and an adhesive layer 25 disposed on the top of the rough surface 23. Multiple sets of the connecting protrusion 21 and the groove 24 are symmetrically arranged. A guide groove 4 is formed on the top edge of the rough surface 23.

[0015] In use, quickly align the carbon felt 11 and carbon cloth 12 so that the connecting protrusion 21 is fully embedded in the groove 24. At this time, the rough surface 1 22 and the rough surface 23 are tightly attached, and the adhesive layer 25 is distributed between the contact surfaces of the rough surface 1 22 and the rough surface 23, completing the initial fixation. Then, place the pre-assembled components into a hot press, set the appropriate temperature, pressure, and holding time for the adhesive, so that the adhesive layer 25 melts and fully impregnates the pores of the rough surface 1 22 and the rough surface 23. After cooling, it solidifies to form a strong adhesive layer, while compacting the interlayer structure to reduce voids. Then, the hot-pressed and cured carbon felt 11 and the... Carbon cloth 12 is fed into a needle-punching device, where the needle-punching mechanism penetrates the connection area between carbon felt 11 and carbon cloth 12, forming an interlayer fiber "bridge" to further lock the two-layer structure, improve overall stability, and provide triple locking to prevent separation, doubling the connection stability: the mechanical interlocking of the connecting protrusion 21 and the groove 24 forms a physical snap, limiting displacement; rough surface one 22 and rough surface two 23 increase the adhesive contact area and adsorption force, preventing the adhesive layer 25 from peeling off; needle punching forms a fiber bridge, locking the interlayer structure. The three work together to completely solve the problem of ordinary adhesive bonding relying solely on the adhesive layer and being prone to falling off due to vibration and thermal expansion and contraction.

[0016] Multiple sets of connecting protrusions 21 and grooves 24 are distributed in a dispersed manner, which prevents stress concentration during hot pressing and needle punching. This allows the carbon felt 11 and carbon cloth 12 to be subjected to overall or localized stress, reducing structural damage caused by single-point overload, ensuring uniform stress distribution, and adapting to complex working conditions. During hot pressing of the carbon felt 11 and carbon cloth 12, excess adhesive can flow along the guide groove 4, preventing adhesive overflow and surface contamination, while ensuring uniform adhesive layer filling and improving bonding stability.

[0017] Example 2 An auxiliary function has been added based on Embodiment 1.

[0018] See Figure 1-4 The top of the adhesive layer 25 is symmetrically and fixedly connected with positioning protrusions 3, and the bottom of the carbon cloth 12 is symmetrically provided with positioning grooves 31. The outer side wall of the carbon cloth 12 is symmetrically and fixedly connected with shielding layers 5.

[0019] The carbon felt 11 and carbon cloth 12 are quickly and accurately aligned via the positioning protrusion 3 and positioning groove 31, facilitating the rapid connection of the connecting protrusion 21 and groove 24. After the carbon felt 11 and carbon cloth 12 are connected, the shielding layer 5 is double-locked by adhesive bonding and needle punching to seal the fiber pores, prevent carbon dust from falling off and contaminating the equipment, and create a clamping effect on the connection edge of the carbon felt 11 and carbon cloth 12, further limiting the relative displacement between layers and preventing edge delamination.

[0020] 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 rigid felt with a composite surface structure, comprising a main body component (1), said main body component (1) comprising: Carbon felt (11), with carbon cloth (12) on top. The feature is that a connecting component (2) is provided on the carbon felt (11) and the carbon cloth (12), the connecting component (2) comprising: The connecting protrusion (21) is fixedly connected to the bottom of the carbon cloth (12); Rough surface one (22) is fixedly connected to the bottom of the carbon cloth (12), and rough surface one (22) is sleeved on the outside of the connecting protrusion (21); Rough surface two (23) is fixedly connected to the top of the carbon felt (11); Grooves (24) are formed on the carbon felt (11) and the rough surface two (23); The adhesive layer (25) is disposed on the top of the rough surface two (23).

2. The rigid felt with a composite surface structure according to claim 1, characterized in that: The connecting protrusions (21) and the grooves (24) are arranged in multiple sets symmetrically.

3. The rigid felt with a composite surface structure according to claim 2, characterized in that: The top edge of the rough surface 2 (23) is provided with a guide groove (4).

4. The rigid felt with a composite surface structure according to claim 3, characterized in that: The top of the adhesive layer (25) is symmetrically and fixedly connected with positioning protrusions (3), and the bottom of the carbon cloth (12) is symmetrically provided with positioning grooves (31).

5. The rigid felt with a composite surface structure according to claim 4, characterized in that: The outer side wall of the carbon cloth (12) is symmetrically connected with a shielding layer (5).

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