| 摘要 |
<p>An organopolysiloxane, containing a C1-18, optionally halogenated, hydrocarbon group, is used as the fluid in a viscous coupling, with as additive: a) a phosphorus type anti-wear agent (27 formulae are given), e.g. a triaryl phosphate, optionally also with a sulfur or zinc dithiophosphate agent, each in amount of 0.01 - 5 wt %; or b) a metal deactivator, e.g. benzotriazole or other heterocylic compound or an organic acid, and or a corrosion inhibitor, e.g. a stearate, each in amount of 0.001 to 1 wt %. An antioxidant may also be added, e.g. an amine, in amount of 0.001 to 5 wt %. The fluids are exemplified as used in a coupling having 111 metal discs, with 25 to 50 rpm difference in speeds of rotation, at 130 DEG C for up to 100 hours; they have improved heat-resistance, and so suffer little change in viscosity or torque in use.</p> |
