Heat-conducting shielding foam

Abstract

The utility model relates to the technical field of heat-conducting shielding foams, and discloses a heat-conducting shielding foam, which comprises a foam used for bearing the whole device; the side wall of the electromagnetic shielding layer is fixedly connected to the inner wall of the foam, and the electromagnetic shielding layer is used for enhancing the electromagnetic shielding performance of the foam and reflecting or absorbing electromagnetic waves; the top of the flame-retardant layer is fixedly connected to the bottom of the electromagnetic shielding layer, and the flame-retardant layer is used for improving the fireproof performance of the foam and delaying flame spreading; and the side wall of the high heat conduction layer is fixedly connected to the inner wall of the foam. According to the utility model, the electromagnetic shielding layer enhances shielding, the flame-retardant layer improves fireproof performance, the high-heat-conduction layer optimizes heat conduction, the waterproof and moistureproof layer adapts to the environment, the elastic layer resists pressure, the heat insulation layer reduces heat conduction, the enhancement layer enhances mechanical strength, the performance of the heat-conduction shielding foam is improved, and the problem that equipment is overheated due to poor performance of the heat-conduction shielding foam is solved; and the practicability of the heat-conducting shielding foam is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat conduction shielding foam technical field especially relates to heat conduction shielding foam. BACKGROUND

[0002] Heat conduction shielding foam is a kind of multifunctional composite material, widely used in electronic equipment, new energy vehicles, aerospace and other fields, for solving the heat dissipation, electromagnetic interference, mechanical protection and other problems in the operation of equipment. With the continuous improvement of power density of electronic equipment and the complexification of working environment, the traditional single-function material has been unable to meet the high-performance demand.

[0003] In the prior art, heat conduction shielding foam usually adopts single-function material or simple composite structure, for example, adding metal particles in the foam matrix to improve the thermal conductivity, or realizing electromagnetic shielding by surface coating of conductive material. These technologies mainly rely on the physical properties of materials, such as high thermal conductivity and conductivity of metal, or realize multifunctional composite through simple lamination process.

[0004] However, the heat conduction shielding foam in the prior art has poor performance, especially in high-power equipment, due to insufficient heat conduction performance, heat cannot be dissipated in time, resulting in overheating, failure of equipment and even safety accidents. This problem seriously limits the application of heat conduction shielding foam in high-performance equipment, and also affects the reliability and service life of the equipment, so the heat conduction shielding foam is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of heat conduction shielding foam, to improve the heat conduction shielding foam performance in prior art, to cause the problem of equipment overheating, failure and even safety accident.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Heat conduction shielding foam, comprising:

[0008] Foam, the foam is used to carry the whole device;

[0009] Electromagnetic shielding layer, the electromagnetic shielding layer side wall is fixedly connected in the foam inner wall, the electromagnetic shielding layer is used to enhance the electromagnetic shielding performance of foam, reflects or absorbs electromagnetic wave;

[0010] Flame-retardant layer, the flame-retardant layer top is fixedly connected in the electromagnetic shielding layer bottom, the flame-retardant layer is used to improve the fireproof performance of foam, delays flame spread;

[0011] High thermal conductivity layer, the high thermal conductivity layer side wall is fixedly connected in the foam inner wall, the high thermal conductivity layer has extremely high thermal conductivity, can significantly improve the heat conduction performance.

[0012] Optionally,

[0013] The bottom of the fire-retardant layer is fixedly connected with a waterproof and moisture-proof layer, the waterproof and moisture-proof layer is used for preventing water penetration and moisture erosion, and improving environmental adaptability of the foam.

[0014] Optionally,

[0015] The bottom of the high-thermal-conductivity layer is fixedly connected with an elastic buffer coating, and the elastic buffer coating is used for improving the compression resistance and impact resistance of the foam.

[0016] Optionally,

[0017] The bottom of the elastic buffer coating is fixedly connected with a heat insulation layer, the heat insulation layer is used for reducing heat conduction and realizing local heat insulation, and the bottom of the heat insulation layer is fixedly connected to an inner wall of the foam.

[0018] Optionally,

[0019] The bottom of the high-thermal-conductivity layer is fixedly connected with a reinforcing layer, and the reinforcing layer is used for improving the mechanical strength and tear resistance of the foam.

[0020] Optionally,

[0021] The top of the reinforcing layer is fixedly connected to the bottom of the high-thermal-conductivity layer, and the bottom of the reinforcing layer is fixedly connected to the top of the elastic buffer coating,

[0022] The above one or more technical solutions in the heat-conduction shielding foam provided by the embodiment of the utility model have at least one of the following technical effects: the electromagnetic shielding layer improves shielding performance, the fire-retardant layer improves fireproof performance, the high-thermal-conductivity layer improves thermal conductivity, the waterproof and moisture-proof layer improves environmental adaptability, the elastic buffer coating improves compression resistance, the heat insulation layer reduces heat conduction, and the reinforcing layer improves the mechanical strength of the foam, the performance of the heat-conduction shielding foam is improved, the problem that the heat-conduction shielding foam in the prior art has poor performance, thereby causing equipment overheating, failure or even safety accidents is solved, and the practicability of the heat-conduction shielding foam is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0024] Figure 1 It is the three-dimensional schematic view of the heat-conduction shielding foam provided by the utility model;

[0025] Figure 2The utility model provides a schematic diagram of the cross section structure of the heat-conducting shielding foam.

[0026] In the drawings, various reference signs refer to:

[0027] 1, foam; 2, electromagnetic shielding layer; 3, flame-retardant layer; 4, waterproof and moisture-proof layer; 5, high-thermal-conductivity layer; 6, elastic buffer coating; 7, heat insulation layer; 8, reinforcing layer. DETAILED DESCRIPTION

[0028] The embodiments of the utility model will be described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the utility model, and cannot be understood as a limitation of the utility model.

[0029] In the description of the embodiments of the utility model, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0030] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] In the embodiments of the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0032] Referring to Figure 1 and Figure 2 , the utility model provides an embodiment: heat-conducting shielding foam, including:

[0033] Foam 1, Foam 1 is made of polyurethane or silica gel, with good elasticity and lightweight characteristics, Foam 1 is used to carry the entire device;

[0034] Electromagnetic shielding layer 2, Electromagnetic shielding layer 2 is made of silver-plated fabric, copper mesh or conductive coating, Electromagnetic shielding layer 2 is fixedly connected to the inner wall of Foam 1, Electromagnetic shielding layer 2 is used to enhance the electromagnetic shielding performance of Foam 1, reflecting or absorbing electromagnetic waves;

[0035] Flame-retardant layer 3, Flame-retardant layer 3 is made of phosphorus or nitrogen-based flame retardant coating, or polyimide film, which can provide effective fire protection in high temperature or fire scenarios, Flame-retardant layer 3 is fixedly connected to the bottom of Electromagnetic shielding layer 2, Flame-retardant layer 3 is used to improve the fireproof performance of Foam 1, delaying the spread of fire;

[0036] High thermal conductivity layer 5, High thermal conductivity layer 5 is fixedly connected to the inner wall of Foam 1, High thermal conductivity layer 5 has extremely high thermal conductivity, which can significantly improve the thermal conductivity, Flame-retardant layer 3 is fixedly connected with waterproof and moisture-proof layer 4 at the bottom, Waterproof and moisture-proof layer 4 is made of polyurethane coating, fluorocarbon coating or polyethylene film, which can effectively prevent water penetration in humid or outdoor environments, prolonging the service life, Waterproof and moisture-proof layer 4 is used to prevent water penetration and moisture erosion, improving the environmental adaptability of Foam 1, High thermal conductivity layer 5 is fixedly connected with elastic buffer coating 6 at the bottom, Elastic buffer coating 6 is made of silica gel or elastic polymer coating, which can absorb energy when subjected to external pressure or impact, protecting the internal components from damage, Elastic buffer coating 6 is used to improve the pressure resistance and impact resistance of Foam 1, Elastic buffer coating 6 is fixedly connected with thermal insulation layer 7 at the bottom, Thermal insulation layer 7 is made of aerogel or ceramic fiber material, which can effectively reduce the heat transfer to sensitive areas, ensuring the stability of the device in high temperature environment, Thermal insulation layer 7 is used to reduce heat conduction and achieve local thermal insulation, Thermal insulation layer 7 is fixedly connected to the inner wall of Foam 1, High thermal conductivity layer 5 is fixedly connected with reinforcing layer 8 at the bottom, Reinforcing layer 8 is made of glass fiber, carbon fiber or aramid fiber, which can significantly improve the mechanical strength, enabling it to withstand greater external forces, prolonging the service life, Reinforcing layer 8 is used to improve the mechanical strength and tear resistance of Foam 1, Reinforcing layer 8 is fixedly connected to the bottom of High thermal conductivity layer 5 at the top, Reinforcing layer 8 is fixedly connected to the top of Elastic buffer coating 6 at the bottom;

[0037] Specifically, in the use of heat-conducting shielding foam, first, the bottom of the heat insulation layer 7 is placed in the designated position, the heat insulation layer 7 is used to reduce heat conduction, achieve local heat insulation, effectively reduce the heat transfer to the sensitive area; then, the elastic buffer coating 6 is used to improve the pressure resistance and impact resistance of the foam 1, to ensure that it can maintain structural integrity and functionality in a vibrating or impacting environment; then, the reinforcing layer 8 further improves the mechanical strength and tear resistance of the foam 1 by adding high-strength materials, so that it can withstand greater external force; the high-thermal-conductivity layer 5 has extremely high thermal conductivity, which can significantly improve the thermal conductivity, quickly conduct heat from the heat source to the outside, and avoid overheating of the equipment; the waterproof and moisture-proof layer 4 prevents water penetration and moisture erosion by coating waterproof materials or adding moisture-proof film, improves the adaptability and service life of the foam 1 in a humid environment; the flame-retardant layer 3 improves the fire resistance of the foam 1 by adding flame retardants or flame-retardant film, delays the spread of flames, and enhances its safety in high-temperature or fire scenarios; the electromagnetic shielding layer 2 enhances the electromagnetic shielding performance of the foam 1 by embedding conductive materials, reflects or absorbs electromagnetic waves, effectively reduces electromagnetic interference and radio frequency interference, and through this multi-layer composite structure design, the comprehensive performance of the heat-conducting shielding foam is comprehensively improved, which can meet the higher requirements of application scenarios.

[0038] Working principle: in the use of heat-conducting shielding foam, first, the bottom of the heat insulation layer 7 is placed in the designated position, then the heat insulation layer 7 is used to reduce heat conduction, achieve local heat insulation, then the elastic buffer coating 6 is used to improve the pressure resistance and impact resistance of the foam 1, then the reinforcing layer 8 improves the mechanical strength and tear resistance of the foam 1, the high-thermal-conductivity layer 5 has extremely high thermal conductivity, which can significantly improve the thermal conductivity, the waterproof and moisture-proof layer 4 prevents water penetration and moisture erosion, improves the environmental adaptability of the foam 1, the flame-retardant layer 3 improves the fire resistance of the foam 1, delays the spread of flames, and the electromagnetic shielding layer 2 is used to enhance the electromagnetic shielding performance of the foam 1, reflects or absorbs electromagnetic waves, and increases the performance of the heat-conducting shielding foam.

[0039] The rest of this embodiment is the same as example one, features not explained in this embodiment all adopt the explanation of example one, which will not be described here.

[0040] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Thermally conductive shielding foam, characterized in that, include: Foam (1), which is used to support the entire device; Electromagnetic shielding layer (2), the sidewall of which is fixedly connected to the inner wall of foam (1), the electromagnetic shielding layer (2) is used to enhance the electromagnetic shielding performance of foam (1) and reflect or absorb electromagnetic waves. Flame retardant layer (3), the top of which is fixedly connected to the bottom of electromagnetic shielding layer (2), the flame retardant layer (3) is used to improve the fire resistance of foam (1) and delay the spread of flame; A high thermal conductivity layer (5) is fixedly connected to the inner wall of the foam (1) on its sidewall. The high thermal conductivity layer (5) has an extremely high thermal conductivity coefficient, which can significantly improve the thermal conductivity performance.

2. The thermally conductive shielding foam according to claim 1, characterized in that: The bottom of the flame retardant layer (3) is fixedly connected to a waterproof and moisture-proof layer (4), which is used to prevent water penetration and moisture erosion, and improve the environmental adaptability of the foam (1).

3. The thermally conductive shielding foam according to claim 2, characterized in that: The bottom of the high thermal conductivity layer (5) is fixedly connected to an elastic buffer coating (6), which is used to improve the pressure resistance and impact resistance of the foam (1).

4. The thermally conductive shielding foam according to claim 3, characterized in that: The bottom of the elastic buffer coating (6) is fixedly connected to the heat insulation layer (7), which is used to reduce heat conduction and achieve local heat insulation. The bottom of the heat insulation layer (7) is fixedly connected to the inner wall of the foam (1).

5. The thermally conductive shielding foam according to claim 4, characterized in that: The high thermal conductivity layer (5) is fixedly connected to a reinforcing layer (8) at the bottom, which is used to improve the mechanical strength and tear resistance of the foam (1).

6. The thermally conductive shielding foam according to claim 5, characterized in that: The top of the reinforcing layer (8) is fixedly connected to the bottom of the high thermal conductivity layer (5), and the bottom of the reinforcing layer (8) is fixedly connected to the top of the elastic buffer coating (6).

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