optimizing pentamethyl diethylenetriamine (pc-5) in low-shrinkage epoxy electronics packaging abstract: pentamethyl diethylenetriamine (pc-5), a tertiary amine catalyst, plays a crucial role in the curing kinetics and final properties of epoxy resin systems used in electronics packaging. this article delves into the optimization of pc-5 concentration in low-shrinkage epoxy formulations, focusing on its impact on cure...