Sabic is introducing Ultem SU3102P reactive oligomer, a breakthrough toughening agent for thermoset composites that promises to reshape
aerospace manufacturing. The novel polyetherimide (PEI) oligomer is designed for primary and secondary aerospace structures, including
wings, fuselage frames, spoilers, and interior components, delivering unprecedented formulation freedom without compromising processability.
"As global air traffic increases significantly with more passengers and cargo, the industry faces pressure to build capacity and throughput within
its existing footprint, while still meeting cost, safety, and sustainability goals," said Sergi Monros, vice president, Sabic Polymers, Specialties BU. "
Our new Ultem oligomer can help designers create lighter, thinner, and tougher composite structures, increase manufacturing efficiency, and cut
emissions. This addition to our Ultem portfolio builds on a long history of success in aerospace applications and demonstrates our strong
commitment to materials innovation."
What sets the Ultem SU3102P oligomer apart is its ability to achieve loadings of up to 50% by weight — the only thermoplastic solution capable
of such high concentrations. In contrast, reactive polyethersulfone (rPES), the current industry standard, typically permits loadings of only 7% to 12%.
This dramatic difference translates into tangible performance benefits: the new Sabic oligomer improves toughness-stiffness balance by up to 140%
compared to rPES, helping composite materials resist fracture and other damage from impact. Enhanced part durability can reduce maintenance
time and costs while increasing air safety.
Despite its high loading capability, the Ultem oligomer maintains low formulation viscosity, supporting consistent and efficient processing that helps
reduce cycle time. Composite manufacturers can boost the productivity and energy efficiency of thermoset composite prepregs by up to 30%. The
oligomer can be dropped into existing manufacturing processes and is compatible with a wide range of thermoset resin systems, eliminating the
need for costly equipment upgrades.
Like all Sabic Ultem products, the SU3102P oligomer delivers comprehensive performance characteristics essential for aerospace applications:
exceptional strength, inherent flame retardance, high heat and chemical resistance, and a low coefficient of thermal expansion (CTE). These
properties ensure long-term durability in the demanding aerospace environment.