Trial Purpose:
To evaluate cleaners on red dye using ultrasonic energy
Date Run:
03/08/2004Experiment Procedure:
Two cleaners from the previous trial were diluted to 10% in 250 ml beakers and three other products were used at full strength. All products were suspended in a Branson 3510 ultrasonic tank (40kHz) filled with water and degassed for five minutes. Fifteen preweighed coupons were coated with the dye, Sherwin Incorporated Dubl-Ckek Penetrant DB-51 (68131-40-8). using a hand held swab. Coupons were then reweighed. Three coupons were cleaned in each product for 5 minutes using ultrasonic energy. At the end of cleaning, coupons were rinsed with tap water at 120 F for 15 seconds and dried using air blow off for 30 seconds at 68 F. Once dry, coupons were weighed a final time and efficiencies were calculated.
Trial Results:
All five products were successful in removing over 94% of the dye using ultrasonic energy. All five improved over the immersion cleaning methods. DuPont DBE and Metabolix E3HB removed over 98% of the dye. The table below lists the amount of dye added, the amount remaining and the efficiency for each cleaner tested.
| Cleaner | Initial wt | Final wt | % Removed |
| SC Aircraft | 0.0295 | 0.0015 | 94.92 |
| 0.0248 | 0.0013 | 94.76 | |
| 0.0242 | 0.0013 | 94.63 | |
| Micro 90 | 0.0102 | 0.0005 | 95.10 |
| 0.0263 | 0.0010 | 96.20 | |
| 0.0124 | 0.0004 | 96.77 | |
| E3HB | 0.0314 | 0.0005 | 98.41 |
| 0.0344 | 0.0010 | 97.09 | |
| 0.0335 | 0.0001 | 99.70 | |
| Ink Zapper | 0.0252 | 0.0002 | 99.21 |
| 0.0187 | 0.0004 | 97.86 | |
| 0.0193 | 0.0006 | 96.89 | |
| DBE 6 | 0.0327 | -0.0001 | 100.31 |
| 0.0144 | 0.0005 | 96.53 | |
| 0.0326 | 0.0006 | 98.16 |
Success Rating:
A follow up test, usually based on company input.Conclusion:
The successful products will be tested on the second dye supplied by the client.
