Trial #8
To test the removal of grease from aluminum coupons with heated immersion for 30 minutes using stir bar.
A 50% solution was created for Water Works and Dimethyl Glutarate was used at 100%. Three aluminum coupons per cleaner were pre-weighed for initial weights. They were then soiled 1/3 of the way with black grease that was given to us by the company and were weighed for dirty weights. The solutions were all heated on the hot plate till they reached 105 degrees Fahrenheit. Three coupons per cleaner were placed in the solutions and immersed for 30 minutes with a stir bar at 300 rpm. They were then left to dry for over an hour and final weights were taken.
Cleaners:
- 100% Dimethyl Glutarate
- 50% Water Works
Both cleaners were not effective at removing grease from aluminum. Dimethyl glutarate averaged around 47% and Water works was lower at 37%.
| Cleaner
|
Initial wt of cont
|
Final wt of cont
|
% removal
|
Average
|
| Dimethyl Glutarate
|
0.2333
|
0.0369
|
84.18
|
47.03
|
| 0.1249
|
0.1015
|
18.73
|
| 0.2227
|
0.1377
|
38.17
|
| Water Works
|
0.2646
|
0.1881
|
28.91
|
36.87
|
| 0.2070
|
0.1429
|
30.97
|
| 0.2166
|
0.1067
|
50.74
|
Both cleaners were not effective. Next steps are to use ultrasonics with heated immersion.
No relation