Abstract: A silicone rubber composite material includes silicone rubber, first carbon nanotubes having an average diameter of not more than 30 nm, and second carbon nanotubes having an average diameter of more than 30 nm and not more than 1000 nm. Per 100 parts by weight of the silicone rubber, 2.5 to 10 parts by weight of the first carbon nanotubes and 5 to 15 parts by weight of the second carbon nanotubes are included.

Abstract: A vibration-isolating device includes: a vibration source, which generates vibrations; and at least one vibration-isolating rubber which is fixed to the vibration source. The vibration source is supported by at least one support member that is fixed to a transmission-receiving member through the at least one vibration-isolating rubber. The vibration source and the at least one vibration-isolating rubber are configured such that a difference between a maximum value and a minimum value of resonant frequencies of a structure, which includes the vibration source, the at least one vibration-isolating rubber and the at least one support member, is equal to or smaller than 10 Hz when the vibration source is vibrated in six degrees of freedom. The at least one vibration-isolating rubber includes: 100 parts by mass of silicone rubber; and larger than 0 parts by mass and equal to or smaller than 3 parts by mass of carbon nanotubes.

Abstract: A silicone rubber composite material includes silicone rubber, first carbon nanotubes having an average diameter of not more than 30 nm, and second carbon nanotubes having an average diameter of more than 30 nm and not more than 1000 nm. Per 100 parts by weight of the silicone rubber, 2.5 to 10 parts by weight of the first carbon nanotubes and 5 to 15 parts by weight of the second carbon nanotubes are included.