Trial #10
To evaluate cleaners on red dye using ultrasonic energy
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.
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
|
The successful products will be tested on the second dye supplied by the client.
No relation