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Properties of AirStar DC filtration media

Continuous operating temperature, dry heat 

  • Polyamide (Nylon) - 200°F (94°C)

  • Polypropylene - 200°F (94°C)

  • Polyester - 270°F (132°C)

  • Acrylic copolymer - 248°F (120°C)

  • Homopolymer acrylic - 260°F (125°C)

  • PPS (Ryton®) - 375°F (190°C)

  • Aramid (Nomex®) - 400°F (204°C)

  • Polyimide (P84®) - 500°F (260°C)

  • Polytetrafluoroethylene (Teflon®) - 500°F (260°C)

Water vapor saturated environment, moist heat 

  • Polyamide (Nylon) - 200°F (94°C)

  • Polypropylene - 200°F (94°C)

  • Polyester - 200°F (94°C)

  • Acrylic copolymer - 230°F (110°C)

  • Homopolymer acrylic - 260°F (125°C)

  • PPS (Ryton) - 375°F (190°C)

  • Aramid (Nomex) - 350°F (177°C)

  • Polyimide (P84) - 383°F (195°C)

  • Polytetrafluoroethylene (Teflon) - 500°F (260°C)

Specific gravity (g/cm3) 

  • Polyamide (Nylon) - 1.14

  • Polypropylene - 0.9

  • Polyester - 1.38

  • Acrylic copolymer - 1.16

  • Homopolymer acrylic - 1.17

  • PPS (Ryton) - 1.38

  • Aramid (Nomex) - 1.38

  • Polyimide (P84) - 1.41

  • Polytetrafluoroethylene (Teflon) - 2.3

Relative moisture regain (%) @ 68?F & 85% moisture 

  • Polyamide (Nylon) - 4.0 to 4.5

  • Polypropylene - 0.1

  • Polyesther - 0.4

  • Acrylic copolymer - 1.0

  • Homopolymer acrylic - 1.0

  • PPS (Ryton) - 0.6

  • Aramid (Nomex) - 4.5

  • Polyimide (P84) - 3.0

  • Polytetrafluoroethylene (Teflon) - 0

Supports combustion 
  • Polyamide (Nylon) - Yes
  • Polypropylene - Yes
  • Polyesther - Yes
  • Acrylic copolymer - No
  • Homopolymer acrylic - Yes
  • PPS (Ryton) - No
  • Aramid (Nomex) - No
  • Polyimide (P84) - No
  • Polytetrafluoroethylene (Teflon) - No

Microbial resistance 

  • Polyamide (Nylon) - No effect

  • Polypropylene - Excellent

  • Polyesther - No effect

  • Acrylic copolymer - Very good

  • Homopolymer acrylic - Very good

  • PPS (Ryton) - No effect

  • Aramid (Nomex) - No effect

  • Polyimide (P84) - No effect

  • Polytetrafluoroethylene (Teflon) - no effect

Alkalies 

  • Polyamide (Nylon) - Good

  • Polypropylene - Excellent

  • Polyesther - Fair

  • Acrylic copolymer - Fair

  • Homopolymer acrylic - Fair

  • PPS (Ryton) - Excellent

  • Aramid (Nomex) - Good

  • Polyimide (P84) - Excellent

  • Polytetrafluoroethylene (Teflon) - Excellent

Mineral acids 

  • Polyamide (Nylon) - Poor

  • Polypropylene - Excellent

  • Polyesther - Fair

  • Acrylic copolymer - Good

  • Homopolymer acrylic - Very good

  • PPS (Ryton) - Excellent

  • Aramid (Nomex) - Fair

  • Polyimide (P84) - Very good

  • Polytetrafluoroethylene (Teflon) - Excellent

Organic acids 

  • Polyamide (Nylon) - Poor

  • Polypropylene - Excellent

  • Polyesther - Fair

  • Acrylic copolymer - Good

  • Homopolymer acrylic - Excellent

  • PPS (Ryton) - Excellent

  • Aramid (Nomex) - Fair

  • Polyimide (P84) - Very good

  • Polytetrafluoroethylene (Teflon) - Excellent

Oxidizing agents 

  • Polyamide (Nylon) - Fair

  • Polypropylene - Good

  • Polyesther - Good

  • Acrylic copolymer - Good

  • Homopolymer acrylic - Good

  • PPS (Ryton) - Excellent

  • Aramid (Nomex) - Poor

  • Polyimide (P84) - Very good

  • Polytetrafluoroethylene (Teflon) - Excellent

Organic Solvents 

  • Polyamide (Nylon) - Very good

  • Polypropylene - Excellent

  • Polyesther - Good

  • Acrylic copolymer - Very good

  • Homopolymer acrylic -Very good

  • PPS (Ryton) - Excellent

  • Aramid (Nomex) - Very good

  • Polyimide (P84) - Excellent

  • Polytetrafluoroethylene (Teflon) - Excellent