To 959
mg of commercial
water-borne Baymedix CD102 PU dispersion (40 wt %), the following
was added and carefully mixed by hand, in order: 380 mg of dipropylene
glycol, 874 mg of propylene glycol, and 351 mg of 2-hydroxyethyl cellulose
solution (10 wt % in propylene glycol). The resulting mixture was
added to 6 g of dried AgAu flakes in a 15 mL jar with a lid. The obtained
viscous paste was mixed in a SpeedMixer (German Engineering by Hauschild,
DAC 600.1 - CM 50) for 8.5 min (30 s at 800 rpm, 8 min at 1800 rpm).
The obtained ink was then free from visible particles. For analogue
Ag ink, pristine Ag flakes from the bottle were used in the same quantities
described for the formulation of the AgAu flakes ink, with the exception
of the added propylene glycol amount, which was decreased to 166 mg
for the same weight of Ag to achieve a similar viscosity as the AgAu
ink.
mg of commercial
water-borne Baymedix CD102 PU dispersion (40 wt %), the following
was added and carefully mixed by hand, in order: 380 mg of dipropylene
glycol, 874 mg of propylene glycol, and 351 mg of 2-hydroxyethyl cellulose
solution (10 wt % in propylene glycol). The resulting mixture was
added to 6 g of dried AgAu flakes in a 15 mL jar with a lid. The obtained
viscous paste was mixed in a SpeedMixer (German Engineering by Hauschild,
DAC 600.1 - CM 50) for 8.5 min (30 s at 800 rpm, 8 min at 1800 rpm).
The obtained ink was then free from visible particles. For analogue
Ag ink, pristine Ag flakes from the bottle were used in the same quantities
described for the formulation of the AgAu flakes ink, with the exception
of the added propylene glycol amount, which was decreased to 166 mg
for the same weight of Ag to achieve a similar viscosity as the AgAu
ink.
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