To evaluate the effectiveness of previously identified solvents in removing the royco grease soil from aluminum coupons.
Date Run:
10/11/2023
Experiment Procedure:
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.
Trial Results:
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
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
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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