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Trial #6

Trial #6

To evaluate the effectiveness of previously identified solvents in removing the royco grease soil from aluminum coupons.

2023

31

2

0

0

Coupon

10/10/2023

0.00

Ultrasonics

Alexander Symko
Amelia Wagner

Aluminum

Greases

None

None

Gravimetric

Four solvents were chosen using previous testing data on their performance for removing other waxes and greases.  Three pre weighed aluminum coupons were assigned to each solvent for each substrate for a total of 12 aluminum coupons. The coupons were soiled with the royco 27A grease soil (about 0.5 grams) on the bottom third of the coupons using a swab.   After soiling, the dirty weights of the coupons were recorded.  The coupons were then subjected to 20 mins of unheated ultrasonics in their respective cleaners.  The coupons were left to air dry overnight before the clean weights were recorded.

Cleaner Initial wt of cont. Final wt of cont. %Cont Removed % AVG
1-Propanol 0.0864 0.0040 95.37 97.52
0.0767 0.0005 99.35
0.0650 0.0014 97.85
Thiophene 0.0627 0.0010 98.41 98.30
0.0869 0.0004 99.54
0.0428 0.0013 96.96
1-Butanol 0.0383 0.0008 97.91 98.58
0.0295 0.0003 98.98
0.0776 0.0009 98.84
Dowanol PnBGE 0.0499 0.0010 98.00 98.20
0.0452 0.0006 98.67
0.0631 0.0013 97.94

1-Propanol, Thiophene, 1-Butanol, and Dowanol PnBGE are all effective cleaners in removing both the royco 27A grease soil and the Glyconol wax soil from either substrate.

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