To evaluate successful aqueous cleaners on second buffing compound.
Date Run:
09/21/2005
Experiment Procedure:
Four 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.
Twelve preweighed 260 Brass coupons were coated with the Matchless Metal Polishing Co Z-66 (1344-28-1) 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:
Two of the products removed over 60% of the buffing compound after 5 minutes of immersion cleaning. All four products would benefit from using ultrasonic energy. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Formula 815 GD
0.3424
0.1906
44.33
0.2937
0.0998
66.02
0.2716
0.0773
71.54
Micro 90
0.5382
0.4110
23.63
0.7646
0.4603
39.80
0.4170
0.2252
46.00
MC 132
0.2454
0.0661
73.06
0.5378
0.1819
66.18
0.5132
0.1735
66.19
Texolite 1740 XL
0.4581
0.2780
39.31
0.2249
0.0821
63.49
0.1674
0.0743
55.62
The aqueous cleaners were not as effective as the drop-in solvents; however, the efficiencies for the top two aqueous cleaners were almost as effective. The table below lists the drop-in solvent efficiencies.
Drop-in Solvent Results Product Efficiency
Ak 225
53.31
Ensolv
68.44
CCA
67.1
MCA
61.7
Lenium ES
68.44
Solvon IP
71.48
Solvon PB
63.89
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The top three aqueous products will be evaluated for removing the third buffing compound under similar conditions.
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