| 摘要 |
<p>Compressible gaskets for, in particular, internal-combustion engines are made from porous compressible materials, such as, preferably, fibre nonwovens containing binders and optionally fillers, or are made from graphite films or graphite/binder mixtures pressed onto metal plates, and contain, before impregnation with a liquid polysiloxane resin containing reactive hydrogen groups, preferably from 0.5 to 5 % by weight of crosslinking catalysts made from organic metal salts which are preferably insoluble in water and the impregnant and are finely deposited on the soft components. On crosslinking, the impregnant is crosslinked to such an extent that it is also substantially crosslinked in the surface region, and the impregnated gasket no longer sticks to the packaging material on transport or to the sealing faces of the internal-combustion engine after installation.</p> |
