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TPI, PEI Extem® - World's Highest Heat Amorphous Thermoplastic Polyimide.

Producer: Sabic IP
Polymer type PEI, TPI

The new Extem® Resin portfolio of amorphous thermoplastic polyimide (TPI) and polyetherimide (PEI) resins offers a powerful combination of outstanding elevated thermal resistance up to 311 °C Tg; high strength, stiffness, and creep performance up to 230 °C, broad chemical resistance including chlorinated solvents; and eliminates the draw-backs of semi-crystalline materials, imidized thermosets, and competitive amorphous thermoplastics which can require post-moulding curing or crystallization.

In addition, Extem® resin is inherently flame-retardant without the use of halogenated additives that can pose an environmental risk.

General info

Extem® is available in transparent and opaque custom colors, as well as glass filled grades. In the near future, Extem® with additional fillers will be available through SABIC Innovative Plastics' LNP® Compounds to provide wear resistance performance, electrostatic dissipative properties, enhanced dimensional stability, and more. Plus, Extem® resin portfolio is extremely versatile allowing SABIC Innovative Plastics to design products that can offer design engineers exceptional flexibility and freedom.

Typical applications of Extem® Polyimide Resins are replacement for non melt processible Polyimides, PCB, Aerospace components, mobile phone parts.

Properties

Long-term Heat Resistance of Extem®

Excellent stability of physical and mechanical properties at elevated temperatures thanks to high glass transition temperature of up to 311°C. Extem® is available with relative thermal indices (RTI) up to 230°C (preliminary).

Strength and Stiffness of Extem®

Outstanding strength, stiffness and creep resistance with predictable performance up to 230 °C (preliminary). Tensile strength of typical die cast aluminum at 200 °C. Extem® XH resin is approximately 50% stronger at 170 °C than Ultem®. Unfilled, transparent grades are equal in strength to other thermoplastics with opacifying fillers.

Dimensional Stability of Extem®

Among the most dimensionally stable thermoplastics available, offering predictability over a broader temperature range exceeding 200 °C. Filled grades of Extem® offer exceptionally high-tolerance dimensional capabilities.

Environmental Stress & Cracking Resistance of Extem®

Unlike most other amorphous thermoplastics, Extem® resins retain strength and resist stress cracking when exposed to automotive and aircraft fluids, aliphatic hydrocarbons, alcohols, acids as well as chlorinated solvents such as methylene chloride.

Flammability, Smoke Generation and Toxicity of Extem®

Inherently flame-retardant without the use of halogenated additives, which can pose an environmental risk. Extem® resin is exceptionally difficult to ignite, with a limiting oxygen index (LOI) of 45% (preliminary). Extem® resin is expected to retain the UL performance and flame, smoke and toxicity strengths of Ultem® resin.

Processability of Extem®

Extem® resin can be processed in conventional drying and injection moulding or extrusion equipment capable of running Ultem* resin and other high heat thermoplastics. Extem® can be film and profile extruded, thermoformed, extrusion blow moulded, extruded into stock shapes, and injection moulded. Flowability can be tailored to meet customer applications through product and processing design and flows similar to Ultem® resins

Color and Aesthetics of Extem®

Extem® resin is available in a number of transparent and opaque colours and special effects. A unique color and look helps you differentiate your products.

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