ntroducing the engineering plastic PBI (Polybenzimidazole).

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PBI (Polybenzimidazole)

Outline of material

PBI has high heat resistance for a plastic material, with a deflection temperature under load of 435°C. It also has excellent electric and mechanical characteristics. PBI is used as a substitute for conventional plastics, or as an alternative material to carbon, carbon-carbon composite, ceramics, and metals.

PBI　advanced materials PBI Advanced Materials Co., Ltd
http://www.pbi-am.com/features/index_pbi_e.html

Characteristics

Heat characteristics

  • Deflection temperature under load of 435°C, glass transition point of 427°C.
  • Does not burn at (momentary) temperatures of up to 760°C and maintains physical properties at temperatures as low as -200°C.
  • Low coefficient of thermal expansion is similar to that of aluminum and brass.
  • UL 94 V-0 rated.

Mechanical characteristics

  • Tensile strength similar to that of aluminum. （1630kg/cm2)

Electrical characteristics

  • Excellent insulating properties (23 kV/mm) and stable dielectric constant.

Sliding characteristics

  • Excellent wear resistance in high temperatures of up to 300°C.

Plasma resistant

  • Excellent plasma and radiation resistance.

Organic solvent resistant

  • Excellent resistance against toluene, xylene, acetone, and methanol.

Example uses

  • Semiconductor/LCD production equipment parts
  • Glass manufacturing jigs and parts
  • Electrical/electronic device components
  • Electrical insulation parts
  • Thermal insulation parts
  • Sliding parts

  • LCD production parts

  • Parts from rods

  • Parts from sheets

Grades

Compression Molding Grade

  • SCM7000 （Standard grade）
  • SCM7000HP （Low Outgas, High Purity grade）
  • SCM7500 （ESD grade）
  • SCM7600 （Carbon Fiber Reinforced grade）

Injection Molding Grade

  • TU-60 （Standard grade）
  • TF-60V （Low Outgas, High Purity grade)
  • TF-60C （ESD grade）
  • TL-60 （Carbon Fiber Reinforced grade）

Table of physical properties

The properties indicated below are typical values, and are not guaranteed.
These values are provided for reference purposes only.

Property ASTM test method Unit SCM7000
Specific gravity D792 － 1.30
Water absorption 23°C/24 hr D570 ％ 0.40
Tensile strength D638 MPa 160
Elongation D638 ％ 3.0
Flexural strength D790 MPa 220
Flexural modulus D790 MPa 6470
Compressive strength D695 MPa 340
Izod impact strength (notched) D256 J/m 46
Rockwell hardness D785 － A50
Deflection temperature under load (1.82 MPa) D648 ℃ 435
Continuous service temperature － ℃ －
Coefficient of linear thermal expansion D696 10-5/K 2.3
Volume resistivity D257 Ω・m 1013
Dielectric strength D149 MV/ｍ 21
Dielectric constant D150 － 3.3（10Hz）

Download table of physical properties (PDF)

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