Carbon Fiber

  • Reinforcing
  • Highest strength/modulus properties of the common shielding additives
  • Lowest cost of the common shielding additives
  • Low shielding performance

ASTM D4935: Standard Test Method for Measuring the Electromagnetic Shielding Effectiveness of Planar Materials

This test method provides a procedure for measuring the electromagnetic (EM) shielding effectiveness (SE) of a material due to a plane-wave, far-field EM wave. The test utilizes a coaxial transmission line to determine the shielding effectiveness of a given material. The test method is valid for a frequency range of 30 MHz to 1.5 GHz. Various thicknesses and types of materials can be tested to acquire a relative ranking of shielding effectiveness.

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RTP 2100 Series Polyetherimide Compounds

[col type=”lts-one-half”]Advantages

  • Continuous use temperature of 365 degrees F (180 degrees C)
  • High strength
  • Inherently flame retardant
  • Dimensional stability

[/col][col type=”lts-one-half lts-col-last”]Limitations

  • Chemical resistance
  • Cost
  • Colorability


Polyetherimide (PEI) is a high performance engineering thermoplastic. PEI’s characteristics include high strength and rigidity at elevated temperatures, long term heat resistance, and outstanding dimensional stability.

Like other amorphous, high temperature resins, PEI has outstanding dimensional stability and is inherently flame retardant. PEI exhibits good chemical resistance to many substances including hydrocarbons, alcohols and halogenated solvents.


No information supplied by RTP Company constitutes a warranty regarding product performance or use. Any information regarding performance or use is only offered as suggestion for investigation for use, based upon RTP Company or other customer experience. RTP Company makes no warranties, expressed or implied, concerning the suitability or fitness of any of its products for any particular purpose. It is the responsibility of the customer to determine that the product is safe, lawful and technically suitable for the intended use. The disclosure of information herein is not a license to operate under, or a recommendation to infringe any patents.