| 摘要 |
<p>Fluid friction coupling for automatic engagement and disengagement of torque transmission, when the input or output side of the clutch exceeds or falls below a difference in speed, in particular for automatic engagement and disengagement of multiple-wheel drives of motor vehicles, with a working fluid consisting of a dilatant fluid, characterized in that the working fluid is an extremely dilatant copolymer dispersion whose characteristic dilation values, namely critical shear rate ηk and maximum transmissible shearing strain τmax, are stabilized to permanent loading by emulsion polymerization with an additional 5 to 30 wt. %, preferably 8 to 18 wt. %, referred to the finished polymerizate, of (meth)alkyl compounds with at least 2 polymerizable double bonds in the molecule, e.g. dialkylephthalate and/or (meth)alkyl(meth)acrylates as comonomers.</p> |
