To evaluate the effectiveness of cleaners/solvents for the removal of grease on aluminum substrate for 30 minutes unheated immersion.
Date Run:
10/14/2020
Experiment Procedure:
Four of eight cleaning products were diluted with tap water at room temperature to vendor recommended concentration. Three cleaning products were used at the recommended 100% dilution and the solvent option was also used at 100% for industrial testing; all cleaners and solutions were measured for 200 mL. Pre-weighed aluminum coupons were coated over 1/3 of the surface with grease that has been provided by the company by using a metal spatula; three coupons were used for each cleaner/solvent. They were allowed a 24-hour dry time at room temperature; their dirty weights were recorded. The coupons were immersed in the cleaners/solvents at room temperature for 30 minutes then were taken out and placed on trays with paper towels; they were left to dry for 24 hours. Final weights and observations were recorded and evaluated.
Cleaners/Solvents used:
Liquinox (1%)
Dimethyl Glutarate (100%)
Mirachem (20%)
Metalnox (100%)
Micro 90 (1%)
Smart Solve (100%)
SC-Aircraft (5%)
Ozzy Juice 3 (100%)
Trial Results:
The coupons were still wet resulting in higher clean weights. No grease was removed from the coupon evaluated by visual observation.
Solvent/Cleaner
initial weight of soil
final weight of soil
% Removal
Average
Liquinox 1%
0.5365
0.5234
2.44
1.47
0.6479
0.6426
0.82
0.6797
0.6719
1.15
Dimethyl Glutarate 100%
0.4352
0.4548
-4.50
-4.41
0.758
0.8017
-5.77
0.5747
0.5917
-2.96
Mirachem 20%
0.8628
0.8699
-0.82
-0.58
0.9671
0.973
-0.61
0.6095
0.6113
-0.30
Metalnox 100%
0.3461
0.5268
-52.21
-40.78
0.8741
1.1302
-29.30
0.4841
0.6818
-40.84
Micro 90 1%
0.6876
0.6699
2.57
2.40
0.7716
0.7701
0.19
0.6219
0.5944
4.42
Smart Solve 100%
1.0825
1.1647
-7.59
-15.30
0.552
0.6869
-24.44
0.7421
0.8449
-13.85
SC-Aircraft 5%
0.5955
0.5931
0.40
0.72
0.7568
0.7455
1.49
0.7058
0.7039
0.27
Ozzy Juice 3 100%
0.7029
0.7
0.41
0.37
0.8383
0.8333
0.60
0.9868
0.9857
0.11
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Additional testing is required. The next steps include adding additional time to the unheated immersion and adding agitation with a stir bar. Dry step included during testing when adding stir bar.
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