ConductiveMaterials

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This page lists the results of conductive paints, sealants, glues and epoxies which could be extruded.

Graphite added to Bitumen

Bitumen is a brushable waterproofer sealant used on roofs. It hardens into a flexible rubber.

Materials

Bitumen Brushable Waterproofer - 500ml AU$ 8.64
Graphite - Lock-Lube - 6g AU$ 6.11

Results

10ml of bitumen and 750 mg of graphite. Result - >2M Ohms
10ml of bitumen and 1.25g of graphite. Result - 34k Ohms/cm
10ml of bitumen and 2g of graphite. Result - 500-1k/cm Ohms

Notes

Additional graphite was added to the existing solution after the sample trace was drawn. At 2g of graphite the mixture was thick and difficult to mix and manipulate with a the toothpick I used to lay down the test trace. Paint thinner should be added to the mixture and tested.