To evaluate additional cleaners for replacing TCE.
Date Run:
02/22/2002
Experiment Procedure:
An additional five products were selected from the lab's database of products. These five products were diluted to 5% using DI water in 600 ml beakers. Two products from the previous trial were also used in this trial. These products were diluted to 10% using DI water in 600 ml beakers. All seven products were heated to 130 F on a hot plate. Twenty-one preweighed coupons were coated with the New England Industrial Lubricant NEICUT 333 using a hand held swab. Coupons were then weighed again. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. Following cleaning, coupons were rinsed in tap water for 30 seconds at 120 F and dried for 1 minute at 500 F with a Master Appliance heat gun. Once coupons cooled to room temperature, final weights were recorded and efficiencies were calculated.
Trial Results:
Only two products, Surface Cleanse 930 and SC Aircraft & Metal Cleaner, were effective in removing the lubricant using immersion cleaning. The others removed less than 75%. The following table lists the efficiencies for each product.
Cleaners
Coupon 1
Coupon 2
Coupon 3
Average
Std Dev
Surface Cleanse
83.69
84.72
85.37
84.59
0.85
Sea Wash
76.16
67.85
66.86
70.29
5.11
SC Aircraft
91.08
91.33
91.55
91.32
0.24
Inproclean
62.15
40.26
59.58
53.99
11.96
Dirtex
47.71
46.13
54.48
49.44
4.44
Beyond
69.85
74.43
74.66
72.98
2.72
Polyspray
65.65
71.86
48.82
62.11
11.92
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 two effective products will be used in the next trial. Operating conditions will be modified in an attempt to improve cleaning efficiencies.
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