To evaluate aqueous based alternatives for removing rust preventative coating using immersion cleaning.
Date Run:
08/04/2008
Experiment Procedure:
Eight products were selected from the lab's database, www.cleanersolutions.org, based on client supplied information and past testing results. Seven of these products were diluted to 5% using DI water in 600 ml beakers. The eighth was used at full strength. The client's current cleaning solvent was included for comparative purposes.
Twenty-seven preweighed steel coupons were coated with rust preventative VCI 325 using a hand held swab. Dirty weights were recorded. Three coupons were cleaned in each product for five minutes using minimal agitation. No rinse was used and coupons were air dried at room temperature. Once dry, final weights were recorded and efficiencies calculated.
Trial Results:
During the cleaning process non of the alternative products removed over 65% of the rust preventative. Where as the current product removed over 90%. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Aquavantage 1400
0.0793
0.0445
43.88
0.0929
0.0342
63.19
0.1821
0.0353
80.62
Aeromaster
0.1172
0.0710
39.42
0.2441
0.0548
77.55
0.1419
0.0544
61.66
Ozzy Juice SW 1
0.2446
0.0844
65.49
0.2296
0.1380
39.90
0.2723
0.0801
70.58
Grease Feast
0.2585
0.0843
67.39
0.2273
0.0893
60.71
0.2322
0.0805
65.33
SC Aircraft & Metal cleaner
0.2283
0.0646
71.70
0.2614
0.1036
60.37
0.1490
0.0696
53.29
Inproclean 3800
0.1876
0.0897
52.19
0.1817
0.1145
36.98
0.1267
0.0904
28.65
Beyond 2004
0.1646
0.0990
39.85
0.1558
0.0582
62.64
0.2174
0.0866
60.17
Sea Wash Blue
0.1775
0.0982
44.68
0.1900
0.1094
42.42
0.1568
0.1022
34.82
Degreasol Formula 99 R
0.1555
0.0176
88.68
0.1840
0.0145
92.12
0.2479
0.0256
89.67
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
A follow up test will be conducted using the top performing alternatives at higher concentrations.
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