| 摘要 |
PURPOSE: To prepare the subject fluid incorporated with a plurality of specific modified silicone oils, increasing the bonding force between powder particles by the application of voltage to vary the dielectric constant, etc., of the particles and improved in the electroviscous effect and useful for an engine mount, etc. CONSTITUTION: This fluid is produced by dispersing (A) powder produced by the heat-treatment of a lignin sulfonic acid salt in (B) an electrically insulating oily medium (e.g. silicone oil) and incorporating the dispersion with (C) a modified silicone oil having reactive group (e.g. amino-modified silicone oil) and (D) a modified silicone oil having ether bond (e.g. polyether-modified silicone oil). |
