| 摘要 |
A gel composition is provided which on a weight basis consists essentially of 94.0 to 94.4 percent water, 5.50 t0 5.75 percent fumed silica, 0.025 to 0.035 percent of a fatty diamine and 0.002 to 0.004 percent of an ethylene oxide polymer. The composition is particularly useful as a braking medium in a method for stopping high speed monorail sleds employed in aerospace research.
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