Trial #11
To evaluate to additional cleaners on all five contaminants
The aqueous based cleaner was diluted to 5% with DI water in five separate 250 ml beakers. The hydrocarbon based product was used at 100%. Each beaker was heated to 120 F on a hot plate. Thirty preweighed coupons were coated with each contaminant in sets of three. After the contaminants dried, a second weighing was preformed. Three coupons with the same contaminant were immersed into a heated beaker and allowed to soak for 10 minutes. Once the time expired, coupons were rinsed in tap water at 120 F for 30 seconds and dried using a heat gun for 1 minute. Final clean weights were recorded once the coupons were completely dried.
A-Wax
B-Aremco Crystalbond 509 Phthalate; coating
C-Aremco Crystalbond 590
D-Nalco Chemical Co Nalco 2350 Polishing Slurry
E-Saint Gobain Industrial Ceramics Water Based Alumina (1344-28-1, 102-71-6)
The Amberclean solution was successful in removing the two slurries, removing over 97%. Limited cleaning was observed for the wax and the 509 coating. Even though the efficiency was only 4% for the Crystalbond 590, the Amberclean product did start to dissolve the contaminant, causing the clear amberclean to become a brown and cloudy. Uni Clear II was very successful in cleaning the wax from the coupons, 99.6%, and only moderately successful on the two slurries, removing between 60 and 80%. This product was did not remove any of the two Crystalbond contaminants. Table 1 lists the efficiencies for the two cleaners evaluated during this trial.
Table 1. Efficiencies
| Cleaner
|
Amberclean 527 L
|
Average
|
Std Dev
|
| Wax
|
2.99
|
-0.21
|
-0.46
|
0.77
|
1.92
|
| 509
|
-0.79
|
0.35
|
0.11
|
-0.11
|
0.60
|
| 590
|
5.64
|
3.90
|
2.54
|
4.03
|
1.55
|
| Nalco
|
97.22
|
97.27
|
97.61
|
97.37
|
0.22
|
| Alumina
|
99.87
|
99.79
|
99.87
|
99.85
|
0.04
|
| Cleaner
|
Uni Clear II
|
Average
|
Std Dev
|
| Wax
|
99.60
|
99.57
|
99.75
|
99.64
|
0.10
|
| 509
|
-0.66
|
-0.57
|
-1.05
|
-0.76
|
0.26
|
| 590
|
-0.59
|
-1.43
|
-1.74
|
-1.25
|
0.59
|
| Nalco
|
55.30
|
46.98
|
87.58
|
63.29
|
21.45
|
| Alumina
|
76.86
|
81.26
|
83.42
|
80.51
|
3.34
|
Neither product was capable of cleaning all of the contaminants. One product, Uni Clear IIwas successful on the wax and the other solution, Amberclean 527 L was successful on the two slurries.
No relation