Trial #1
Four terpene based cleaners were tested
Four coupons were handled as in the previous trial with weighing and contamination application. Four terpene based cleaners were selected due to their possible cleaning capabilities.
SUBSTRATE MATERIAL: Stainless Steel
CONTAMINANTS: Ink--Steel Blue DX-100 solvent based dye
| coupon #
|
Coupon
|
contaminated
|
cleaned
|
remaining
|
%cont
|
comments
|
|
|
weight
|
coupon wt
|
wt contam
|
coupon wt
|
contaminate
|
remaining
|
| 9
|
63.223
|
63.2503
|
0.0273
|
63.2307
|
0.0077
|
28.2051
|
good removal time
|
| 10
|
63.072
|
63.0919
|
0.0199
|
63.0732
|
0.0012
|
6.03015
|
excellent removal time
|
| 11
|
62.8395
|
62.8499
|
0.0104
|
62.8357
|
-0.0038
|
-36.5385
|
damage-excellent time
|
| 12
|
63.2235
|
63.242
|
0.0185
|
63.2418
|
0.0183
|
98.9189
|
poor cleaning time
|
| cleaner ID
|
|
| 9
|
Terpene Technology HTF-50
|
| 10
|
Terpene Technology HTF-60
|
| 11
|
T Square HTF-50
|
| 12
|
T Square HTF-321
|
Of the four terpene cleaners used in the trial, it was determined after the experiment was performed that Terpene Technologies was the same company as T Square, therefore only two new cleaners were chosen for testing. Number 9 was the same as number 11 and number 12 was the same as number 2 from the previous trial. HTF-50 and -60 both removed the ink from the coupons. HTF-321 did not clean well during the second trial unlike the first trial.
From the two new cleaners actually used, both appeared able to remove the ink from the substrate. During one of HTF-50's trials, damage to the coupon was noticed through gravimetric analysis. The amount of damage to the coupon was not significant enough to worry about when the sizes of the parts to be cleaned were considered. The parts being cleaned are several magnitudes larger than the coupons and the small amount of damage would not be noticed
No relation