Preparation and Characterization of Liquid Crystalline Polyurethane/Al₂O₃/Epoxy Resin Composites for Electronic Packaging

Figure 2

SEM micrographs of fractured surface of the composites: (a) pure epoxy; (b) EP/LCPU = 100/5; (c) EP/LCPU/Al₂O₃ = 100/5/50; (d) EP/LCPU/Al₂O₃ = 100/5/70.

(a)

(b)

(c)

(d)