To evaluate three products on varnish using vapor degreasing
Date Run:
05/12/2004
Experiment Procedure:
Three products were selected based on results from previous trials. All products were used heated to 160 F on a hot plate in 250 ml beakers. Nine preweighed steel coupons were coated with a varnish mix containing Cooper's Creek Chemicals, Cooper Black Tank Paint No 739 (64742-89-8, 8052-42-4, 108-88-3); Sherwin Williams Company, V74B2 Black Asphaltum coating (64742-89-8, 64742-88-7, 8052-42-4) using a hand held swab. The oil was then heated with a Master Appliance Heat gun at 300 F for 10 minutes. After cooling to room temperature, a second weighing was performed to determine the amount of soil that was added. Three coupons were cleaned in each solution for 15 minutes in the bench top vapor degreaser. After cooling, coupons were weighed a final time to determine the cleaning efficiency of each product.
Trial Results:
All three products removed over 97% of the varnish in 15 minutes. Two of the three removed over 99%. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon.
Product
Initial wt
Final wt
% Removal
Solvon PB
0.0845
0.0008
99.05
0.1243
0.0035
97.18
0.0718
0.0032
95.54
Ensolv A
0.0701
0.0001
99.86
0.0538
-0.0001
100.19
0.0694
0.0019
97.26
Metalnox M6960
0.1238
0.0003
99.76
0.0596
-0.0001
100.17
0.0844
0.0007
99.17
Success Rating:
Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
Conclusion:
Remaining parts will be cleaned using the three products and vapor degreasing.
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