Trial Purpose:
To evaluate additional cleaners for replacing TCE.
Date Run:
02/22/2002Experiment 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.
