Polyetherimide (PEI) is an amorphous high-performance thermoplastic known for its outstanding thermal resistance, strength, and excellent dielectric properties. Often marketed under the brand name Ultem®, it is used in highly demanding applications where stable mechanical performance at high temperatures is essential.Polyetherimide (PEI) is an amorphous high-performance thermoplastic known for its outstanding thermal resistance, strength, and excellent dielectric properties. Often marketed under the brand name Ultem®, it is used in highly demanding applications where stable mechanical performance at high temperatures is essential.
• Aerospace industry: Lightweight, heat
• resistant components such as cabin interiors, brackets, and electronics.
• Electronics and electrical: Connector housings, insulators, PCB supports, and other components requiring thermal and electrical stability.
• Medical devices: Surgical tools and housings that require autoclave sterilization.
• Automotive industry: Under
• the
• hood parts exposed to high heat and demanding mechanical conditions.
• Industrial equipment: Technical parts such as gears, bearings, and supports needing long
• term stability and low wear.
• Exceptional heat resistance: PEI maintains its mechanical properties at continuous temperatures up to ~170 °C, with a softening point above 215 °C.
• High strength and stiffness: Offers excellent load
• bearing capacity and dimensional stability under stress.
• Excellent electrical properties: High dielectric strength and low energy loss make it ideal for electronic and high
• voltage applications.
• Flame resistance: Naturally flame
• retardant and compliant with UL94 V
• standards without additives.
• Chemical resistance: Resistant to a wide range of chemicals including alcohols, oils, and many solvents.
• High cost: PEI is one of the more expensive thermoplastics, limiting its use to specialized applications.
• UV sensitivity: Not inherently UV
• resistant, requiring additives for outdoor use.
• Demanding processing: High melt temperatures require specialized equipment and precise processing control.
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