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Material

Temperature Ranges

Light Transmittance

Pros

Cons

Brands

Polycarbonate

Maximum Service Temp: 96 - 120C

Glass Transition Temp: 147C

Melting Temp: 155C

88%

  • tougher and more durable

  • flammability characteristics

  • impact resistance

  • lightweight (1.2g.cc)

  • cold formed into curved light diffusers

  • tensile strength of 9500psi

  • long lasting

  • water absorption of 0.15

  • more expensive (ranges from $88 - $200)

    • brands and sizes

  • tuffak lumen xt (translucent, white polycarbonate)

  • tuffak lumen xt-v (enhanced flammability characteristics)

  • tuffak dx-nr (translucent polycarbonate sheet for outdoor use with non-reflective uv texture on one side)

  • lexan is a cheap brand

Acrylic

Maximum Service Temp: 56.9C

Glass Transition Temp: 109C

Melting Temp: 160C

(a lot of pages say the acrylic can withstand ~80C)

92%

  • tough

  • lightweight (1.05g/cc)

  • easy to fabricate

  • water absorption of 0.15

  • high stiffness and flexural strength

  • cheaper than polycarbonate

  • operate at lower temperatures

  • optix ld

  • optix 95 led

  • optix frost led

  • plexiglas sylk

PETG (Polyethylene Terephthalate Glycol)

Glass Transition Temp: 80C

Melting Temp: 265C

85%

  • high damage resistance

  • No labels