Trial #13
To compare the effectiveness of alternative solvents to Trichloroethylene (TCE) when removing lubricating oils from aluminum alloy coupons.
There are no related objects.
Pre-soiled aluminum parts (Oak 7a - CAS: 64742-53-6; 68909-65-9) and TCE cleaned parts were provided by Lytron. The contact angle of a TCE cleaned part was taken three times and then averaged. The average contact angle was used as a benchmark for the standard of cleanliness. This process was repeated with the pre-soiled parts to get a dirty contact angle. Parts were cleaned for five minutes using Opteon Sion and Tergo Metal Cleaner in a heated ultrasonic tank (95 F). Clean contact angles were taken three times per part and averaged for a final clean contact angle.
The average contact angle for a TCE cleaned part was 93.97°. The TCE contact angle served as a benchmark for the standard of cleanliness.
| Cleaner
|
Part #
|
Dirty Contact Angle
|
Average Dirty
|
Clean Contact Angle
|
Average Clean
|
| Opteon Sion
|
1
|
44.86°
|
45.16°
|
79.26°
|
80.48°
|
| 50.14°
|
79.06°
|
| 40.49°
|
83.13°
|
| Tergo Metal Cleaner
|
2
|
35.61°
|
43.88°
|
79.29°
|
86.34°
|
| 43.46°
|
90.44°
|
| 52.58°
|
89.28°
|
The Tergo Metal Cleaner had the closest clean contact angle to the TCE cleaned contact angle. Tergo Metal Cleaner would be a more viable replacement for TCE based on the cleaning evaluation.
No relation