To evaluate effective aqueous products on third buffing compound.
Date Run:
09/21/2005
Experiment Procedure:
Three products were selected from the lab's previous test results based on performance. Each product was used at 5% diluted with DI water and heated to 130 F on a hot plate. A 600 ml beaker was filled with each product and placed on a stir plate.
Nine preweighed 260 Brass coupons were coated with the Buffing - Jacksonlea ET-31A (1317-95-9) buffing compound. The compound was applied by heating the coupons and the buffing compound with a Master Appliance Heat Gun. The hot buffing compound was rubbed across the surface. Coupons were allowed to cool to room temperature and weighed a second time to determine the amount of contaminant applied. Three coupons were cleaned in each product for 5 minutes using stir-bar agitation. After cleaning, the parts were rinsed for 15 seconds in 120 F tap water bath and then dried for 30 seconds using dry, compressed air at room temperature. Once dry, final weights were recorded and efficiencies were calculated for each product.
Trial Results:
One product removed over 90% of the third buffing compound. The other two only removed around half of the contaminant. The lower efficiencies were recorded on coupons that had large clumps of the buffing compound. When the buffing compounds were applied in a thin layer, efficiencies were much higher.
Cleaner
Initial wt
Final wt
% Removed
Fomula 815 GD
0.1602
0.0711
55.62
0.2267
0.1133
50.02
0.0615
0.0221
64.07
MC 132
0.1551
0.0096
93.81
0.1240
0.0287
76.85
0.1432
0.0006
99.58
Texolite 1740 XL
0.1643
0.1188
27.69
0.1172
0.0647
44.80
0.0271
0.0041
84.87
The drop-in solvents worked better than the aqueous cleaners. The table below lists the efficiencies for the drop-in solvents from the previous tests.
Product
Efficiency
Ensolv
94.66
CCA
91.74
MCA
81.60
Lenium ES
98.33
Solvon IP
79.47
Solvon PB
71.18
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The next step of testing will be to evaluate the aqueous products using ultrasonic energy and to compare results to current aqueous cleaning product. Additional testing would be to clean client supplied parts.
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