In this study, poly(urea formaldehyde) (PUF) nanocapsules with epoxy cores were blended into a polyurea matrix, formulated as poly[(phenyl isocyanate)-co-formaldehyde] (PMDI) (f = 3.4), and a diamine curing agent (VERSALINK 650) to form nanocomposites. The nanocomposites were then subjected to impact delamination tests at temperatures below −74 °C. Scanning electron microscopy was used to qualitatively inspect the nanocomposites before the impact (virgin), after the impact, and after self-healing.