Polyimide Components

Polyimide is a non melting high temperature polymer.  Strength, dimensional stability, and creep resistance remain high even at temperatures above 260°C. Low wear rates combined with the ability to work under unlubricated conditions and high pV-rates makes it the ideal material for challenging friction and wear applications, extending lifetime and reducing maintenance costs.  Its high purity and low outgassing are needed for applications in the vacuum, space and semiconductor industry.

Description Grades of Diyak Polyimide (PI)

PI-N, Natural (Unfilled) Polyimide, Highest elongation and purity. PI-G15, Self-lubricating grade with 15% graphite filled.

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Polyimide Components In Detail

Polyimide (PI)

Polyimide is a non melting high temperature polymer.  Strength, dimensional stability, and creep resistance remain high even at temperatures above 260°C. Low wear rates combined with the ability to work under unlubricated conditions and high pV-rates makes it the ideal material for challenging friction and wear applications, extending lifetime and reducing maintenance costs.  Its high purity and low outgassing are needed for applications in the vacuum, space and semiconductor industry.

 Special properties of Polyimide (PI)

  • Long-term thermal stability 300 °C (short-term up to 400 °C)
  • Good cryogenic properties down to -270 °C
  • High strength, modulus and stiffness also at high temperatures over 260 °C
  • Excellent wear resistance under high surface pressure and high sliding speeds
  • Excellent thermal and electrical insulation
  • Minimal thermal conductivity
  • High purity, low outgassing in vacuum conditions in accordance
  • Good machinability
  • Good chemical resistance to acids, fats and solvents
  • Highest flame retardant grade UL-94 V-0
  • Irradiation resistance
  • Aging resistance

Polyimide is ideal for electrical and thermal insulating applications. More ductile than ceramics, and lighter weight than metals. Polyimide is an excellent choice for structural parts in aerospace and other applications where metal replacement is desirable.

Polyimide Material Datasheet   

PI – Polyimide
Polyimide (PI) is a non melting high temperature polymer. Strength, dimensional stability, and creep resistance remain high even at temperatures above 360°C
Properties Temperature Test Standard or Instrument Unit PI-N PI-G15
Physical Properties
Color Brown Black
Density GB1033  g/cm³ 1.38-1.42 1.42-1.45
Mechanical Properties
Tensile Strength 23℃ GB/T1040-2006 Mpa 85 89
260℃ 49.4 54
Elongation at Break 23℃ GB/T1040-2006 % 6.3 3.7
260℃
Tensile Modulus 23℃ GB/T1040-2006 Mpa 3140 4400
260℃
Flexural Strength 23℃ GB/T1040-2000 Mpa 110 137
260℃ 60 99
Flexural Modulus 23℃ GB/T1040-2000 Mpa 2990 4500
260℃ 1640 3000
Compress Strength 23℃ GB/T1040-2000 Mpa 135 124
260℃ 83.8 100
Compress Modulus 23℃ GB/T1040-2000 Mpa 1620 1600
260℃ 1410 1400
lzod Unotched Impact Strength 23℃ GB/T16420-1996 Kj/m2 83.2 45
260℃
Thermal Properties
Coefficient of Linear Expansion 296-573K μm/m/°C 53 49
 Deflection Temperature GB/T 1634.2 >360 >360
Electrical Properties
Surface Resistvity GB1410 Ω 1014
Volume Resistvity GB1410 Ω.cm 1015
Dielectric Strength KV/mm 22
Dielectric Constant 3.6
NOTE: *The data stated above are typical values intended for reference and comparison purposes only. *The data should not be used as a basis for design specifications or quality control. *The information is provided as a guide to the best of our knowledge and given without obligation or liability. *Testing under individual application circumstances is recommended.
* PI-N,  Natural (Unfilled) PI
* PI-G15, 15% Graphite Filled PI

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