To evaluate selected cleaners at higher concentrations in an attempt to improve efficiency
Date Run:
10/17/2006
Experiment Procedure:
Three alternative products were selected from the previous trial based on effectiveness. Each product was diluted to 10% in 250 ml beakers using DI water and heated to 130 F on a hot plate.
Nine preweighed coupons were heavily coated with the Matchless Metal Polishing TSX Tripoli (1317-95-9) buffing compound by heating the buffing compound and rubbing it onto the surface of the coupons. Coupons were weighed a second time to determine the amount of buffing compound added. Three coupons were cleaned in each solution for five minutes using minimal stir bar agitation. Coupons were rinsed for 15 seconds in a tap water bath at 120 F and dried using a dry compressed air for 30 seconds. Once dry coupons were weighed a final time and product efficiencies were calculated.
Trial Results:
Two products removed over 90% of the buffing compound from the brass coupons after five minutes of immersion cleaning. The following table lists the amount of buffing compound applied, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Polyspray Jet 790 XS
0.2486
0.0323
87.01
0.3719
0.0320
91.40
0.3932
0.0034
99.14
Detergent 8
0.2855
0.0081
97.16
0.1571
0.0011
99.30
0.4925
0.0296
93.99
Micro 90
0.2813
0.2078
26.13
0.2731
0.2688
1.57
0.2978
0.2297
22.87
Success Rating:
Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
Conclusion:
The two successful products, Polyspray Jet 790 XS and Detergent 8, will be used on the second supplied buffing compound.
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