polydicyclopentadiene

Polydicyclopentadiene (PDCPD) is a thermosetting polymer produced from the monomer dicyclopentadiene (DCPD). Polymerization is typically carried out by ring-opening metathesis polymerization (ROMP) using transition‑metal catalysts, such as ruthenium‑based systems. The process converts the bicyclic DCPD structure into a highly crosslinked network, yielding a cured material that is insoluble and infusible.

PDCPD resins are commonly supplied as two‑part systems and can cure at room temperature or with heat to achieve higher performance. The resulting material is a rigid, heat‑resistant thermoset with high stiffness and toughness for a polymer of this class. It generally offers good chemical resistance, low creep, and strong dimensional stability, with a glass transition temperature commonly reported in the range of roughly 150–170°C, depending on formulation and cure conditions.

Applications for PDCPD include rotomolded consumer and industrial parts, automotive components, housings for electrical equipment, piping systems, tanks, and sporting goods. The material is valued in reinforced composites for its combination of impact resistance and thermal stability. Variants such as HPDCPD describe formulations aimed at higher toughness and heat resistance through controlled crosslink density and additives.

Recycling of PDCPD is challenging due to its crosslinked network; processing typically relies on mechanical reprocessing or energy recovery rather than material recycling. Handling considerations include the management of catalysts and curing agents used during manufacture and curing.