| 摘要 |
A modified gilsonite base encapsulating system having improved sound suppression properties and rheologically controlled characteristics. In one aspect of the invention and in one form of the preferred embodiment, a potting compound is provided wherein the gilsonite is modified by thermal depolymerization. In another form of the preferred embodiment, the gilsonite is modified by the addition of a process oil having a viscosity gravity constant of 0.97 and a viscosity in SSU at 100 DEG C of 48.4 and comprises at least 21% by weight of the composition. Silica filler is added to produce a potting compound having quite unexpected sound suppression qualities. |
