Epoxy composite

摘要

The invention relates to a process for making a epoxy composite. In the process an epoxy prepolymer, a curing agent and a particulate filler are combined to form a curable mixture. The mixture is then agitated under a non-air atmosphere to render it substantially homogeneous, and pressure is applied to the mixture to reduce or eliminate gas pockets in the mixture and is maintained until the curable mixture is cured to form the epoxy composite.

主权项

1. A process for making an epoxy composite comprising a particulate filler and having an ultimate stress under compression of greater than or equal to 100 MPa and a density of less than about 0.7 g/cc and an equilibrium water absorption at 100 MPa and 20° C. of less than about 0.5%, said process comprising:
(a) combining an epoxy prepolymer, a curing agent and the particulate filler to form a curable mixture; (b) agitating the mixture under a non-air atmosphere to render it substantially homogeneous; (c) applying pressure to the mixture to reduce or eliminate gas pockets in the mixture; and (d) maintaining the pressure until the curable mixture is cured to form the epoxy composite.