Electromagnetic shielding adhesive tape with wave-absorbing, noise-reducing and buffering functions

Abstract

The utility model discloses a wave-absorbing, noise-reducing and buffering electromagnetic shielding adhesive tape which comprises a polyimide double-sided copper-plated film layer, a first adhesive layer, a high-magnetism wave-absorbing layer, a second adhesive layer, a low-magnetism wave-absorbing layer, a third adhesive layer, an ethylene propylene diene monomer rubber wave-absorbing layer and a fourth adhesive layer, the first adhesive layer is connected with the lower end face of the polyimide double-sided copper-plated thin film layer and the upper end face of the high-magnetism wave-absorbing layer, the second adhesive layer is connected with the lower end face of the high-magnetism wave-absorbing layer and the upper end face of the low-magnetism wave-absorbing layer, and the third adhesive layer is connected with the low-magnetism wave-absorbing layer and the upper end face of the ethylene propylene diene monomer rubber wave-absorbing layer. The fourth rubber layer is arranged on the lower end face of the EPDM rubber wave-absorbing layer. The electromagnetic wave absorber has the advantages that wave absorption can be realized in a high-frequency environment and a low-frequency environment, and electromagnetic signals are prevented from being influenced. The EPDM rubber wave-absorbing layer has excellent buffering and wave-absorbing effects, the working height can be compressed to 30% of the original height, and semi-closed holes in rubber can effectively absorb sound waves, so that a certain noise reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of adhesive tapes, in particular to an electromagnetic shielding adhesive tape for absorbing waves, reducing noise and buffering. Background Art

[0002] With the development of new technologies, the speed of scientific and technological progress is changing with each passing day. The frequency of use of intelligent electrical equipment is getting higher and higher. NFC, RFID, speakers, high-voltage equipment and other equipment will generate electromagnetic interference during use, which greatly reduces the sensitivity of surrounding equipment. Electromagnetic interference not only affects human health, but also affects the use of this equipment and other equipment. Existing electromagnetic shielding tapes cannot meet the electromagnetic shielding absorption effect in both low-frequency and high-frequency bands, and usually can only meet one of them. In addition, the flame retardant effect of existing electromagnetic shielding tapes is not ideal.

[0003] In view of this, it is necessary to provide an electromagnetic shielding tape with wave absorption, noise reduction and buffering. Summary of the invention

[0004] The utility model provides an electromagnetic shielding tape with wave absorption, noise reduction and buffering, which effectively solves the problem that the existing tape cannot simultaneously meet the electromagnetic shielding requirements at high and low frequencies and has a poor flame retardant effect.

[0005] The technical solution adopted by the utility model is

[0006] The invention discloses an electromagnetic shielding tape for absorbing, reducing noise and buffering, comprising a polyimide double-sided copper-plated film layer, a first adhesive layer, a high magnetic absorption layer, a second adhesive layer, a low magnetic absorption layer, a third adhesive layer, an EPDM rubber absorption layer and a fourth adhesive layer, wherein the first adhesive layer connects the lower end surface of the polyimide double-sided copper-plated film layer and the upper end surface of the high magnetic absorption layer, the second adhesive layer connects the lower end surface of the high magnetic absorption layer and the upper end surface of the low magnetic absorption layer, the third adhesive layer connects the low magnetic absorption layer and the upper end surface of the EPDM rubber absorption layer, and the fourth adhesive layer is arranged on the lower end surface of the EPDM rubber absorption layer.

[0007] Furthermore, the thickness of the polyimide double-sided copper-plated film layer is in the range of 6um to 100um.

[0008] Furthermore, the first adhesive layer, the second adhesive layer, the third adhesive layer and the fourth adhesive layer have the same structure, and the first adhesive layer is hot melt adhesive or high temperature resistant acrylic adhesive.

[0009] Furthermore, the thickness of the EPDM rubber absorbing layer ranges from 100um to 5mm.

[0010] Furthermore, the thickness of the high magnetic absorption layer and the low magnetic absorption layer are both in the range of 10um to 5mm.

[0011] Beneficial effects of the utility model: By using the polyimide double-sided copper-plated film layer as a shielding and reflecting layer, electromagnetic waves can be effectively reflected. In addition, the polyimide double-sided copper-plated film layer has good waterproof performance, and still has a good conductive shielding effect after aging at 85℃ / 85%RH for 240H, and the temperature resistance can reach 260 degrees Celsius. The high magnetic absorption layer and the low magnetic absorption layer are used as the main magnetic wave materials. The low magnetic permeability absorption material can effectively lose most frequency bands of electromagnetic waves and is not easy to saturate and can absorb 1MHZ-1GHZ electromagnetic waves. The high magnetic permeability absorption material can absorb high-frequency electromagnetic waves again, and can shield and absorb electromagnetic waves in the 1M-1GHZ frequency band to avoid affecting electromagnetic signals. The EPDM rubber absorption layer has excellent buffering and absorption effects, and the working height can be compressed to 30% of the original height. The semi-closed pores in the rubber can effectively absorb sound waves, and have a certain noise reduction effect. The EPDM rubber absorption layer can absorb 1G-30GHZ electromagnetic waves. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall schematic diagram of the electromagnetic shielding tape with wave absorption, noise reduction and buffering provided in an embodiment of the present application.

[0013] The markings in the figure are: 1, polyimide double-sided copper-plated film layer; 2, first adhesive layer; 3, high magnetic absorption layer; 4, second adhesive layer; 5, low magnetic absorption layer; 6, third adhesive layer; 7, EPDM rubber absorption layer; 8, fourth adhesive layer; DETAILED DESCRIPTION

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0015] like Figure 1 As shown, an electromagnetic shielding tape with wave absorption, noise reduction and buffering provided in an embodiment of the present application has a structure comprising a polyimide double-sided copper-plated film layer 1, a first adhesive layer 2, a high magnetic absorption layer 3, a second adhesive layer 4, a low magnetic absorption layer 5, a third adhesive layer 6, an EPDM rubber absorption layer 7 and a fourth adhesive layer 8, wherein the first adhesive layer 2 connects the lower end surface of the polyimide double-sided copper-plated film layer 1 and the upper end surface of the high magnetic absorption layer 3, the second adhesive layer 4 connects the lower end surface of the high magnetic absorption layer 3 and the upper end surface of the low magnetic absorption layer 5, the third adhesive layer 6 connects the low magnetic absorption layer 5 and the upper end surface of the EPDM rubber absorption layer 7, and the fourth adhesive layer 8 is arranged on the lower end surface of the EPDM rubber absorption layer 7.

[0016] It should be noted that the high magnetic permeability absorbing layer can be a high magnetic permeability alloy and an iron-cobalt-vanadium soft magnetic alloy. The low magnetic permeability absorbing layer can be made of metal materials such as aluminum, magnesium, nickel, and titanium. The EPDM rubber absorbing layer 7 is a terpolymer of ethylene, propylene, and non-conjugated dienes filled with metal powder to form the EPDM rubber absorbing layer 7, and the terpolymer of ethylene, propylene, and non-conjugated dienes has numerous honeycomb holes inside, which can effectively buffer and soundproof. The EPDM rubber absorbing layer 7 is an existing structure.

[0017] In the above design, the polyimide double-sided copper-plated film layer 1 is used as a shielding and reflecting layer to effectively reflect electromagnetic waves. In addition, the polyimide double-sided copper-plated film layer 1 has good waterproof performance, and still has a good conductive shielding effect after aging at 85℃ / 85%RH for 240H, and the temperature resistance can reach 260 degrees Celsius. The high magnetic absorption layer 3 and the low magnetic absorption layer 5 are used as the main magnetic wave materials. The low magnetic permeability absorption material can effectively lose most frequency bands of electromagnetic waves and is not easy to saturate and can absorb 1MHZ-10GHZ electromagnetic waves. The high magnetic permeability absorption material can absorb high-frequency electromagnetic waves again, and can shield and absorb electromagnetic waves in the 1M-10GHZ frequency band. It can achieve absorption in both high-frequency and low-frequency environments to avoid affecting electromagnetic signals. The EPDM rubber absorption layer 7 has excellent buffering and absorption effects, and can compress the working height to 30% of the original height. The semi-closed pores in the rubber can effectively absorb sound waves and have a certain noise reduction effect. The EPDM rubber absorbing layer 7 can absorb electromagnetic waves of 1G-30GHZ.

[0018] Specifically, the thickness of the polyimide double-sided copper-plated film layer 1 is in the range of 6 um to 100 um.

[0019] In the above design, the thickness of the polyimide double-sided copper-plated film layer 1 is in the range of 6um to 100um, which can ensure lightness and thinness, and is suitable for use environments with high weight reduction requirements.

[0020] Specifically, the first adhesive layer 2 , the second adhesive layer 4 , the third adhesive layer 6 and the fourth adhesive layer 8 have the same structure, and the first adhesive layer 2 is hot melt adhesive or high temperature resistant acrylic adhesive.

[0021] In the above design, the first adhesive layer 2 is hot melt adhesive or high temperature resistant acrylic adhesive which can effectively bond the layers together and can also effectively withstand high temperatures.

[0022] Specifically, the thickness of the EPDM rubber absorbing layer 7 is in the range of 100 um to 5 mm.

[0023] In the above design, the thickness of the EPDM rubber absorbing layer 7 is in the range of 100 um-5 mm, which can ensure that the EPDM rubber absorbing layer 7 not only has good buffering performance, but also has a certain noise reduction effect.

[0024] Specifically, the thickness of the high magnetic absorption layer 3 and the low magnetic absorption layer 5 are both in the range of 10 um to 5 mm.

[0025] In the above design, the thickness range of the high magnetic absorption layer 3 and the low magnetic absorption layer 5 is 10um to 5mm, which can effectively ensure the electromagnetic shielding effect of the product.

[0026] To further explain in detail, it should be understood that the above is only a specific 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 electromagnetic shielding tape for absorbing, reducing noise and buffering, characterized by: The invention comprises a polyimide double-sided copper-plated film layer (1), a first adhesive layer (2), a high magnetic absorption layer (3), a second adhesive layer (4), a low magnetic absorption layer (5), a third adhesive layer (6), an EPDM rubber absorption layer (7) and a fourth adhesive layer (8), wherein the first adhesive layer (2) connects the lower end surface of the polyimide double-sided copper-plated film layer (1) and the upper end surface of the high magnetic absorption layer (3), the second adhesive layer (4) connects the lower end surface of the high magnetic absorption layer (3) and the upper end surface of the low magnetic absorption layer (5), the third adhesive layer (6) connects the low magnetic absorption layer (5) and the upper end surface of the EPDM rubber absorption layer (7), and the fourth adhesive layer (8) is arranged on the lower end surface of the EPDM rubber absorption layer (7).

2. The electromagnetic shielding tape with wave absorption, noise reduction and buffering according to claim 1, characterized in that: The thickness of the polyimide double-sided copper-plated film layer (1) is in the range of 6 um to 100 um.

3. The electromagnetic shielding tape with wave absorption, noise reduction and buffering according to claim 1, characterized in that: The first adhesive layer (2), the second adhesive layer (4), the third adhesive layer (6) and the fourth adhesive layer (8) have the same structure, and the first adhesive layer (2) is hot melt adhesive or high temperature resistant acrylic adhesive.

4. The electromagnetic shielding tape with wave absorption, noise reduction and buffering according to claim 1, characterized in that: The thickness of the EPDM rubber absorbing layer (7) is in the range of 100 um to 5 mm.

5. The electromagnetic shielding tape with wave absorption, noise reduction and buffering according to claim 1, characterized in that: The thickness of the high magnetic absorption layer (3) and the low magnetic absorption layer (5) are both in the range of 10 um to 5 mm.

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