Aviation epoxy high-strength flame-retardant cellular board

Abstract

The utility model discloses an aviation epoxy high-strength flame-retardant cellular board which comprises a carbon fiber layer, a flame-retardant cellular board body is fixedly connected to the bottom face of the carbon fiber layer, a first cellular groove is formed in the surface of the flame-retardant cellular board body, a flame-retardant mechanism is arranged in the first cellular groove, and a supporting board is fixedly connected to the bottom face of the flame-retardant cellular board body. A heat dissipation honeycomb plate is fixedly connected to the bottom face of the supporting plate, heat dissipation holes are formed in the heat dissipation honeycomb plate, a sound insulation plate is fixedly connected to the bottom face of the heat dissipation honeycomb plate, and a protection base plate is fixedly connected to the bottom face of the sound insulation plate. The flame-retardant cellular board has the advantages that the flame-retardant mechanism in the flame-retardant cellular board can prevent the whole board from burning, and flame spreading is effectively restrained or delayed; and heat insulation and heat dissipation treatment is carried out on the whole plate through the heat dissipation honeycomb plate, so that the flame-retardant and heat-insulation effects of the aviation plate are greatly improved, and potential safety hazards during fire disasters are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flame-retardant panels, in particular to an aviation epoxy high-strength flame-retardant honeycomb panel. Background Art

[0002] In the field of modern aerospace, the selection of materials is crucial to ensure the safety, lightness and high performance of aircraft. In particular, for aircraft internal structures and decorative materials, their flame retardant properties are one of the key indicators for evaluating their applicability. Traditional flame retardant sheets for aviation are usually made by mixing flame retardants with base materials, which are compounded by physical or chemical methods to improve the overall flame retardant properties of the base material, thereby forming flame retardant sheets.

[0003] However, this composite method has obvious limitations: first, the compatibility problem between flame retardants and substrates often leads to a reduction in flame retardant efficiency, especially in high temperature environments, where flame retardants are prone to precipitation or degradation, and cannot effectively and permanently suppress or delay the spread of flames; second, due to the uneven dispersion of flame retardants, local areas may become fire hazards due to insufficient flame retardant protection. These traditional flame retardant panels still have great safety hazards when used in actual use. No effective solutions have been proposed for the problems in related technologies. Therefore, it is necessary to propose an aviation epoxy high-strength flame retardant honeycomb panel to solve the above-mentioned problems. Utility Model Content

[0004] In view of the problems in the related technology, the utility model proposes an aviation epoxy high-strength flame-retardant honeycomb panel to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] An aviation epoxy high-strength flame-retardant honeycomb panel comprises a carbon fiber layer, the bottom surface of the carbon fiber layer is fixedly connected with a flame-retardant honeycomb panel, the surface of the flame-retardant honeycomb panel is provided with a honeycomb groove, a flame-retardant mechanism is arranged in the honeycomb groove, the bottom surface of the flame-retardant honeycomb panel is fixedly connected with a support plate, the bottom surface of the support plate is fixedly connected with a heat dissipation honeycomb panel, the inside of the heat dissipation honeycomb panel is provided with heat dissipation holes, the bottom surface of the heat dissipation honeycomb panel is fixedly connected with a sound insulation panel, and the bottom surface of the sound insulation panel is fixedly connected with a protective substrate.

[0007] Furthermore, in order to improve the flame retardant effect of the flame retardant honeycomb panel, the flame retardant mechanism includes an expandable flame retardant installed on the inner bottom surface of the honeycomb groove, an extrusion plate is slidably installed above the expandable flame retardant, and a flame retardant bag made of TPE material is fixedly connected to the surface of the extrusion plate.

[0008] Furthermore, in order to enhance the flame retardant effect of the carbon fiber layer during a fire, a liquid flame retardant is injected into the interior of the flame retardant bag, and flame retardant holes are opened on the surface of the carbon fiber layer.

[0009] Furthermore, in order to achieve the heat insulation effect in the heat dissipation honeycomb panel, a second honeycomb groove is opened on the surface of the heat dissipation honeycomb panel, and a heat insulation board is fixedly installed in the second honeycomb groove.

[0010] Furthermore, in order to realize mutual connection between multiple protective substrates, a connection groove is opened at one end of the protective substrate, and a connection plate is fixedly installed at the other end, and the connection plate cooperates with the connection groove.

[0011] Furthermore, in order to achieve a heat-insulating effect on the surface of the protective substrate, a heat-insulating coating is provided on the bottom surface of the protective substrate.

[0012] Furthermore, in order to realize the fixed connection between the connecting plate and the connecting groove by bolts, positioning holes are provided on both side surfaces of the connecting plate and the connecting groove.

[0013] The beneficial effects of the utility model are as follows: when a fire occurs near the carbon fiber layer, the intumescent flame retardant in the flame retardant honeycomb panel can have a flame retardant effect on the entire panel, effectively preventing the fire from spreading further, and the flame retardant bag of TPE material gradually melts when encountering high temperature, and the liquid flame retardant inside flows out to further have a flame retardant effect on the burning fire; the intumescent flame retardant will gradually expand when exposed to open flame or high temperature, and the expanded intumescent flame retardant in the honeycomb groove pushes the extrusion plate to move, pushing the liquid flame retardant flowing out of the flame retardant bag out of the flame retardant hole and flowing to the surface of the carbon fiber layer, thereby increasing the flame retardant effect of the carbon fiber layer; the design of the flame retardant honeycomb panel greatly reduces the risk of fire compared with traditional flame retardant panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the surface structure of an aviation epoxy high-strength flame-retardant honeycomb panel according to an embodiment of the utility model;

[0016] Figure 2 It is a side view of an aviation epoxy high-strength flame-retardant honeycomb panel according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal cross-section of a honeycomb groove 1 in an aviation epoxy high-strength flame-retardant honeycomb panel according to an embodiment of the utility model;

[0018] Figure 4It is a schematic diagram of the internal cross-section of a honeycomb groove 2 in an aviation epoxy high-strength flame-retardant honeycomb panel according to an embodiment of the utility model.

[0019] In the figure:

[0020] 1. Carbon fiber layer; 2. Flame retardant honeycomb panel; 3. Honeycomb slot one; 4. Flame retardant mechanism; 401. Expandable flame retardant; 402. Extrusion plate; 403. Flame retardant bag; 5. Support plate; 6. Heat dissipation honeycomb panel; 7. Heat dissipation holes; 8. Sound insulation board; 9. Protective substrate; 10. Flame retardant holes; 11. Honeycomb slot two; 12. Heat insulation board; 13. Connection slot; 14. Connection plate; 15. Heat insulation coating; 16. Positioning hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] According to an embodiment of the utility model, an aviation epoxy high-strength flame-retardant honeycomb panel is provided.

[0023] Embodiment 1:

[0024] like Figure 1-Figure 4 As shown, an aviation epoxy high-strength flame-retardant honeycomb panel according to an embodiment of the utility model includes a carbon fiber layer 1, which provides overall strength and rigidity of the panel; a flame-retardant honeycomb panel 2 made of aluminum alloy is fixedly connected to the bottom surface of the carbon fiber layer 1, and a honeycomb groove 3 is provided on the surface of the flame-retardant honeycomb panel 2, and a flame-retardant mechanism 4 is provided in the honeycomb groove 3, which is used to achieve a flame-retardant effect on the entire panel and prevent the panel from burning; a support plate 5 is fixedly connected to the bottom surface of the flame-retardant honeycomb panel 2, which is used for internal support and reinforcement of the panel; a heat dissipation honeycomb panel 6 is fixedly connected to the bottom surface of the support plate 5, and heat dissipation holes 7 are provided inside the heat dissipation honeycomb panel 6 for rapid heat dissipation in the panel; a sound insulation board 8 is fixedly connected to the bottom surface of the heat dissipation honeycomb panel 6 to achieve a sound insulation effect when the aviation panel is in use; a protective substrate 9 is fixedly connected to the bottom surface of the sound insulation board 8, which is used to thicken and protect the entire panel.

[0025] like Figure 1-Figure 4As shown, the flame retardant mechanism 4 includes an intumescent flame retardant 401 installed on the inner bottom surface of the honeycomb groove 3, and the intumescent flame retardant 401 is a phosphorus-nitrogen intumescent flame retardant, which expands when exposed to high temperature or open flame; an extrusion plate 402 is slidably installed above the intumescent flame retardant 401, and a flame retardant bag 403 made of TPE (thermoplastic elastomer) is fixedly connected to the surface of the extrusion plate 402, which melts when exposed to high temperature; liquid flame retardant is injected into the flame retardant bag 403, and flame retardant holes 10 are opened on the surface of the carbon fiber layer 1, which are used for the liquid flame retardant to flow from the flame retardant holes 10 to the carbon fiber layer 1 after the flame retardant bag 403 melts, so as to have a flame retardant effect on the carbon fiber layer 1; heat dissipation A honeycomb groove 11 is provided on the surface of the honeycomb panel 6, and an insulating plate 12 made of alumina is fixedly installed in the honeycomb groove 11, which is used to achieve a heat insulation effect on one side of the sound insulation plate 8 on the panel body; a connecting groove 13 is provided at one end of the protective substrate 9, and a connecting plate 14 is fixedly installed at the other end, and the connecting plate 14 cooperates with the connecting groove 13. Positioning holes 16 are provided on the surfaces of both sides of the connecting plate 14 and the connecting groove 13. The connecting plates 14 of the two protective substrates 9 are inserted into the connecting groove 13, and then the two protective substrates 9 are fixedly connected by bolts and the positioning holes 16; a heat insulation coating 15 is provided on the bottom surface of the protective substrate 9, which is used to achieve further heat insulation on the surface of the protective substrate 9.

[0026] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0027] In summary, with the help of the above-mentioned technical scheme of the utility model, when a fire occurs near the carbon fiber layer 1, the expandable flame retardant 401 in the flame-retardant honeycomb panel 2 can have a flame retardant effect on the entire panel, effectively preventing the panel from burning and the fire from continuing to spread, and the flame retardant bag 403 made of TPE material gradually melts when encountering high temperature, and the liquid flame retardant inside flows out to further have a flame retardant effect on the burning fire; the expandable flame retardant 401 will gradually expand when exposed to open flame or high temperature, and the expandable flame retardant 401 expanded in the honeycomb groove 3 pushes the extrusion plate 402 to move, and the liquid flame retardant flowing out of the flame retardant bag 403 is pushed out from the flame retardant hole 10 and flows to the surface of the carbon fiber layer 1, so as to increase the flame retardant effect of the carbon fiber layer 1, and effectively prevent the panel body from burning during a fire.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aviation epoxy high-strength flame-retardant honeycomb panel, characterized in that: The invention comprises a carbon fiber layer (1), the bottom surface of the carbon fiber layer (1) is fixedly connected to a flame retardant honeycomb panel (2), the surface of the flame retardant honeycomb panel (2) is provided with a honeycomb groove (3), a flame retardant mechanism (4) is arranged inside the honeycomb groove (3), the bottom surface of the flame retardant honeycomb panel (2) is fixedly connected to a support plate (5), the bottom surface of the support plate (5) is fixedly connected to a heat dissipation honeycomb panel (6), the inside of the heat dissipation honeycomb panel (6) is provided with heat dissipation holes (7), the bottom surface of the heat dissipation honeycomb panel (6) is fixedly connected to a sound insulation panel (8), and the bottom surface of the sound insulation panel (8) is fixedly connected to a protective substrate (9).

2. The aviation epoxy high-strength flame-retardant honeycomb panel according to claim 1, characterized in that: The flame retardant mechanism (4) comprises an intumescent flame retardant (401) installed on the inner bottom surface of the honeycomb groove (3), an extrusion plate (402) is slidably installed above the intumescent flame retardant (401), and a flame retardant bag (403) made of TPE material is fixedly connected to the surface of the extrusion plate (402).

3. The aviation epoxy high-strength flame-retardant honeycomb panel according to claim 2, characterized in that: The flame retardant bag (403) is injected with a liquid flame retardant, and the surface of the carbon fiber layer (1) is provided with flame retardant holes (10).

4. The aviation epoxy high-strength flame-retardant honeycomb panel according to claim 1, characterized in that: The surface of the heat dissipating honeycomb plate (6) is provided with a second honeycomb groove (11), and a heat insulation plate (12) is fixedly installed in the second honeycomb groove (11).

5. The aviation epoxy high-strength flame-retardant honeycomb panel according to claim 1, characterized in that: A connection groove (13) is formed at one end of the protective substrate (9), and a connection plate (14) is fixedly mounted at the other end, wherein the connection plate (14) matches the connection groove (13).

6. The aviation epoxy high-strength flame-retardant honeycomb panel according to claim 1, characterized in that: The bottom surface of the protective substrate (9) is provided with a heat insulation coating (15).

7. The aviation epoxy high-strength flame-retardant honeycomb panel according to claim 5, characterized in that: Positioning holes (16) are formed on both side surfaces of the connecting plate (14) and the connecting groove (13).

Images