RTP 2100 Series Compounds

This data provides comparative information on the shielding performance of standard RTP Company polyetherimide compounds using various combinations of additives and loading levels.

Instead of off-the-shelf solutions, RTP Company routinely develops specialty compounds with a precise combination of properties such as conductivity, flame retardance, structural reinforcement, color, and wear resistance to meet your exact application requirements.

Product Description
ESD 2181 Carbon Fiber 10%
ESD 2183 Carbon Fiber 20%
ESD 2185 Carbon Fiber 30%
EMI 2160.5 Stainless Steel Fiber 5%
EMI 2161 Stainless Steel Fiber 10%
EMI 2162 Stainless Steel Fiber 15%

RTP 2100 Series
Polyetherimide Compounds

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

Carbon Fiber Products

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

ESD 2181

Carbon Fiber 10%

ESD 2183

Carbon Fiber 20%

ESD 2185

Carbon Fiber 30%

Stainless Steel Fiber Products

  • Non-reinforcing
  • Minimal effect on neat resin properties
  • Similar mold shrinkage to neat resin
  • Good shielding-to-cost performance
  • Best colorability of the common shielding additives

EMI 2160.5

Stainless Steel 5%


EMI 2161

Stainless Steel 10%


EMI 2162

Stainless Steel 15%


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.

Supporting Product Information

Chemical Resistance
Information on resin resistance to chemical and environmental exposure.

RTP Company Nomenclature
Guide to the identification system used for RTP Company products.

EMI Primer
The nuts and bolts of EMI and how thermoplastics can function as a shield.

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.