| CPC C08L 63/00 (2013.01) | 22 Claims |
|
1. An epoxy composition comprising:
a thermally-curable epoxy resin;
about 1 wt % to about 25 wt % of fumed silica; and
a sliding-ring polymer additive that is a cross-linked polyrotaxane bead, wherein the cross-linked polyrotaxane bead comprises:
a linear polymer;
at least one ring compound substituted with polyurethane, polycaprolactone, or a combination thereof, wherein the linear polymer is threaded through the opening of the ring compound; and
stopper groups disposed at both end terminals of the linear polymer.
|