The purpose of this experiment was to retest Micro 90 on aluminum coupons removing all three buffing compounds using heated ultrasonics.
Date Run:
08/04/2020
Experiment Procedure:
Three aluminum coupons were obtained for each of the three buffing compounds: red, blue, and white. A solution of Micro 90 was prepared to a concentration of 5% and heated to 120°F in an ultrasonic bath. Coupons were soiled with their respective buffing compounds and a soiled weight was obtained. Once solutions reach the proper temperature, coupons were submerged and heated ultrasonics was conducted for 15 minutes, with observations noted every 5 minutes. After 15 minutes had passed, coupons were allowed to air dry. Once dry, a clean weight was obtained. Effectiveness of Micro 90 was then determined.
Trial Results:
Soil
Initial wt. of cont.
Final wt. of cont.
% Cont. Removed
%AVG per soil
%AVG Total
Red
0.0117
-0.0145
223.93
357.26
646.91
0.0048
-0.021
537.5
0.0087
-0.0183
310.34
Blue
0.0091
-0.0204
324.18
292.44
0.0146
-0.0226
254.79
0.0121
-0.024
298.35
White
0.0011
-0.0212
2027.27
1291.04
0.003
-0.02
766.67
0.0024
-0.0235
1079.17
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
For all three soils, Micro 90 at a 5% concentration in an ultrasonics bath at 120°F was able to remove the buffing compounds and any additional soils present on the aluminum coupons. The next step would be to utilize Micro 90 with other high performing cleaners to test on parts provided by the company.
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