Thermochromic Ice9 Filament


Thermochromic Ice9 is a color changing filament based on the Insulating Ice9 material. Changes color from purple/gray to pink at 37C.

Please contact us for information on lead time.


Thermally conductive, electrically insulating, and thermochromic FDM printing filament with 3.5 W/m-K thermal conductivity. Printed parts will change color from purple/gray to pink at 37C and will have properties almost identical to our Ice9 E-Ins filament expect. This unique material enables you to visualize heat flow through your part for safety and design optimization applications. Use this material when you need to remove heat but must maintain electrical isolation or use an RF transparent material. The material has an electrical resistivity > 1014 ohm-cm and a breakdown voltage > 5 kV at 1 mm.

TCPoly can also print prototypes in-house with short lead times. Please contact us for more details.

Additional information

Thermal Conductivity (W/m-K)


Extruder Temperature (°C)


Bed Temperature (°C)




Filament Diameters (mm)

1.75, 2.85

Spool Filament Weights (g)

1,000, 500


1.5 g/cm3

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