| 摘要 |
PROBLEM TO BE SOLVED: To provide a new pressure sensitive material functioning based on a principle different from a piezo resistance effect used in a conventional pressure sensitive material, and to particularly provide a pressure sensitive material having excellent pressure sensitivity capable of being used under a condition of high temperature and high pressure. SOLUTION: This pressure sensitive material is so constituted that a base material having first particles as a main component includes, dispersed therein, second particles as aggregation particles with voids having conductivity different from that of the first particles. A void ratio of the aggregation particles as the second particles is in a range from 25 vol.% to 55 vol.%. The pressure sensitive material has a characteristic that the electric resistance is varied depending on change of a mutual contact condition of the second particles due to a pressure. COPYRIGHT: (C)2009,JPO&INPIT |
