PEI / ULTEM™ Compression Molding


PEI / ULTEM™ Compression Molding

PEI (polyetherimide) is an amorphous thermoplastic polymer characterized by high strength, flame and heat resistance and good dielectric properties over a broad range of frequencies.

Thermech produces compression molded PEI sheets, plates, rods, tubes, rings, discs and near-net shapes.

PEI / ULTEM™ Properties

  1. Continuous use temperature of 338 °F (170 °C)

  2. Good short-term heat resistance due to a glass transition temperature (Tg) of 217 °F (217 °C)

  3. Excellent dimensional stability

  4. Low creep sensitivity

  5. Low and uniform coefficient of thermal expansion

  6. Highly reproducible part-to-part dimensions

  7. Excellent mechanical performance allows thin-wall designs

  8. Practical level of impact resistance from subzero to 428 °F (220 °C)

  9. High dielectric strength

  10. Stable dielectric constant over a wide range of temperatures and frequencies

  11. Resistant to gamma and UV radiation

  12. Transparent to visible light, infrared light and microwave radiation

  13. Low water absorption

  14. Excellent moisture and steam resistance, long-term hydrolytic stability

  15. Inherently flame-retardant, UL 94 V-0 rated with low smoke evolution and toxicity

  16. Broad resistance to chemicals such as automotive fluids, fully halogenated hydrocarbons, alcohols, aqueous solutions, most lipids and disinfectants

  17. Natural PEI has a transparent amber color

  18. Can withstand exposure to detergents in industrial washing machines

  19. Can withstand multiple cleaning cycles using sterilization methods including steam autoclaving, chemiclaving, EtO, gamma radiation and dry heat

  20. Excellent stain resistance

  21. Compatible with vacuum metallization and selected galvanic plating processes

  22. US FDA and EU food contact compliant

  23. NSF/ANSI 51 listed (food equipment materials, polyetherimide resin for food zone)

  24. Several grades are intended for medical compliance to USP Class VI and ISO 10993

  25. Most grades are able to comply with WEEE/RoHS and various ECO labels

PEI / ULTEM™ Applications

PEI combines excellent strength and rigidity at high temperatures with long-term heat resistance.

In many applications PEI can replace metals, thermosets and ceramics.

PEI finds many uses in:

  1. Aerospace

  2. Food service

  3. Healthcare

  4. Automotive

  5. Lighting

  6. Electrical

  7. HVAC and fluid handling

PEI is well suited for medical applications that require repeated sterilization.  It will retain 100% of its tensile strength after 2,000 autoclave cycles at 270 °C.  It will also retain 85% of its tensile strength after immersion in boiling water for 10,000 hours.

Compression-molded PEI / ULTEM™ Parts

  1. Manifolds

  2. Pump and valve components

PEI Compression Molding Resins

ULTEM™ PEI from SABIC Innovative Plastics

Some of the more common compression-molding grades of ULTEM™ PEI are:

  1. ULTEM™ 1000 PEI

  2. ULTEM™ 2100 PEI

  3. ULTEM™ 2200 PEI

  4. ULTEM™ 2300 PEI

  5. ULTEM™ 2400 PEI

PEI is also available in a large number of other grades that are customized for various properties or uses:

  1. General purpose

  2. Unreinforced

  3. Wear resistant

  4. Glass reinforced

  5. Glass and PTFE reinforced

  6. Mineral filled

  7. Transparent

  8. High pigment

  9. Low warpage

  10. Low temperature impact

  11. Improved ductility

  12. Chemical resistant

  13. High heat

  14. Healthcare

  15. Aircraft

ULTEM™ specialty compounds from SABIC Innovative Plastics’ LNP™

  1. LNP™ Thermocomp™ PEI

  2. LNP™ Stat-kon™ PEI

  3. LNP™ Lubricomp™ PEI

Perfecting Surfaces Since 1949   •

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PEI / ULTEM™ Compression Molding


Compression Molding and Machining of PEI / ULTEM™.


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