| 摘要 |
PROBLEM TO BE SOLVED: To obtain a material having excellent handling and high reliability and EMC(electromagnetic compatibility) by forming a metallic layer on the surface of a silicone rubber, in which a field-strength attenuation factor by near-field region measurement is specified, by a sputtering film formation method. SOLUTION: A metallic layer is formed on the surface of a silicone rubber by a sputtering film formation method. A field-strength attenuation factor of 20dB or more from 300 Mhz to 1 GHz by near-field region measurement is acquired in the silicone rubber at that time, and the silicone rubber is given conductive performance for the field-strength attenuation factor. Carbon black and metal powder and a doped metallic oxide, carbon fiber, etc., are compounded. Radio-wave absorptivity is deteriorated at the time of the field- strength attenuation factor of 20dB or less. Accordingly, an EMC applying part combining sealing properties, elasticity, flexibility and shape freedom and the excellent electromagnetic-wave shielding properties, conductivity, surface smoothness, etc., of a metal is obtained.
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