（ EMI shield plating technology for weather resistant rubber ）Ni-B plating on EPDM O-rings EPDM (Ethylene Propylene Diene Rubber) is a rubber material with excellentweather resistance andozone resistance, and is also used outdoors. It has excellent water resistance and is also used forpacking around water. Since EPDM rubber has excellent weather resistance and water resistance, arubber plating material with Ni plating on EPDM is effective as a rubber packing part that requires anelectromagnetic wave shield such as a shield box. This Ni-plated EPDM rubber has a low electricalresistance of 0.8Ω / sq and good adhesion of the Ni-plated film. In addition, the electromagneticwave shielding performance (EMI shielding performance) is extremely good at 60 dB or more (from10 MHz to 1 GHz). It has been pointed out that EPDM rubber softens and deteriorates when it comesinto contact with chlorine-based materials such as chlorine water, but by applying Ni plating,deterioration of chlorine-resistant systems can be greatly suppressed.
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ReferenceEPDM heat resistance: -50℃ to 150 ℃Ozone resistance: goodEPDM Ni-B platingPlating film thickness: approx. 2 μmPlating electrical resistance value0.8Ω/ sq |
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[Enlarged photo of EPDM plated surface] The adhesion of the plating film is good. The plating electrical resistance value is as low as 0.8Ω / sq, EMI shielding performance is good at 60 dB or more (from 10 MHz to 1 GHz). |
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