To evaluate selected products for replacing TCE for removing buffing compound.
Date Run:
08/17/2006
Experiment Procedure:
Eight alternative products were selected from the lab's database of testing results based on supplied client information. Products were selected based on buffing compound and oil removal potential and compatibility with copper and brass metal substrates. Each product was diluted to 5% in 250 ml beakers using DI water and heated to 130 F on a hot plate.
Twenty-four preweighed coupons were coated with the red buffing compound using a hand held swab after heating to its melting point with a heat gun. 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:
Three products removed over 60% of the buffing compound from the copper 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
Daraclean 283
0.2223
0.0635
71.43
0.5394
0.3643
32.46
0.1759
0.0234
86.70
Inproclean 3800
1.1193
0.8928
20.24
0.7376
0.5366
27.25
0.9516
0.6233
34.50
Beyond 2001
0.9658
0.7572
21.60
0.5583
0.3948
29.29
0.8133
0.5594
31.22
Polyspray Jet 790 XS
0.6940
0.2108
69.63
1.2507
0.0104
99.17
0.8299
0.4237
48.95
Aquavantage 1400
0.5957
0.4241
28.81
1.4571
1.2716
12.73
0.9873
0.8591
12.98
Crystal Simple Green
0.9235
0.8357
9.51
1.0745
0.8782
18.27
0.5366
0.4141
22.83
Cleaner #10
1.0131
0.8020
20.84
1.1350
0.8656
23.74
0.8690
0.6697
22.93
XL 100
0.5371
0.0600
88.83
0.3029
0.0120
96.04
0.5201
0.2061
60.37
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
The three effective products will be retested using ultrasonics and a higher temperature in an effort to increase the efficiencies of the products.
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