SPI Conductive Platinum Paint/Suspension
Specifications
The following represent the specifications of the newly introduced SPI air
drying platinum paint. Because so many would-be customers of the platinum
paint are already steady users of the SPI silver paint, in some instances
the specifications are referenced to the silver.
% Pt solids: 75%
Particle Size of Pt colloid: 0.5 to 5 µm
Resin Content: About half that which is used in the silver paint.
Resistivity: 0.4 ohm/cm (about two or three orders of magnitude higher than silver)
Resin Type: Identical to the silver material (for proprietary reasons, its composition is not disclosed).
Viscosity: Not measured (to minimize material loss) but estimated to be similar to that of the SPI Silver Paint.
The raw ingredient list for the new SPI Platinum Paint is identical to that
of the SPI Silver Paint with the exception of the metal solids. We would
not expect the processing to be different from the silver product however
the sintering of the metal particles would obviously occur at far higher
temperatures than for the silver. And in terms of sublimation of the metal
in a vacuum, this too would be expected to not occur until far higher
temperatures than for silver.
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Sunday March 21, 2010
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