To test the effectiveness of Purple Tiger reformulations in cleaning DCC-17 from aluminum substrates.
Date Run:
05/24/2021
Experiment Procedure:
en reformulated Purple Tiger products were created and tested; PT 2021, PT 2021A, AHS, GSC, Conc, Conc A, Conc AL, Conc 10%, Conc A 10%, and Conc AL 10%. Three aluminum coupons were obtained and weighed for each of the reformulation products being tested. Coupons were then soiled with DCC-17 and allowed to air dry for 24 hours. After 24 hours of aging, a dirty weight was recorded. Coupons were then loaded onto a Gardner-scrub Straight Line Wash unit set to 10 cycles per minute for 20 cycles. Three pumps of cleaner were applied to each of the respective coupons and four pumps of cleaner were applied to the scrubbing blocks. The cleaner was allowed to sit for 30 seconds. Following the 30 seconds of resting, the SLW unit was run to simulate scrub cleaning. Coupons were then removed from the machine and allowed to dry in air for 24 hours. After the drying period, coupons were weighed, and a final clean weight was recorded. Effectiveness of the cleaners was determined.
Trial Results:
Cleaner
Initial wt of cont.
Final wt of cont.
%Cont Removed
% AVG
PT 2021
0.1075
0.0082
92.37
72.21
0.3294
0.0393
88.07
0.1766
0.1127
36.18
PT 2021 A
0.0958
0.0043
95.51
93.03
0.118
0.0047
96.02
0.1778
0.0221
87.57
AHS
0.1574
0.0222
85.9
90.48
0.338
0.0415
87.72
0.9716
0.0211
97.83
GSC
0.3677
0.0344
90.64
90.75
0.6055
0.0862
85.76
0.4003
0.0167
95.83
Concentration
0.3032
0.1006
66.82
83.57
0.5648
0.0482
91.47
0.4369
0.0331
92.42
Concentration A
0.553
-0.0054
100.98
91.91
0.4337
0.0474
89.07
0.4452
0.0637
85.69
Concentration AL
0.4341
0.0217
95
80.57
0.361
0.0306
91.52
0.3069
0.1375
55.2
Conc 10%
0.1375
0.0041
97.02
95.72
0.2092
0.0059
97.18
0.0895
0.0063
92.96
Conc A 10%
0.1209
0.003
97.52
96.13
0.092
0.0032
96.52
0.1077
0.0061
94.34
Conc AL 10%
0.2113
0.006
97.16
94.78
0.1881
0.007
96.28
0.1143
0.0104
90.9
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Concentration A 10% and Concentration 10% were the most effective reformulations to clean DCC-17 from aluminum substrates, removing an average of 96.13% and 95.72%. The Concentration AL 10% reformulation was also effective with an average of 94.78% removing power. Next steps are to send the data to the company for further evaluation.
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