To evaluate products for removing the mold release agents using ultrasonic cleaning.
Date Run:
04/04/2005
Experiment Procedure:
Eight products selected from the lab's database. Two additional product were selected based on client input. Nine products were diluted to 5% by volume in 600 ml glass beakers using DI water. The remaining product was used at full strength. Products were heated to 120 F using a hot plate. Each product was suspended into a Crest 40 kHz ultrasonic tank filled with water at 120 F. The cleaning solutions were degassed for 5 minutes.
Thirty preweighed coupons were first coated with Valspar MR 225 mold release (100-41-4, 1330-20-7, 8052-41-3, 67-63-0, 108-88-3, 110-82-7, 64742-89-8), followed by a second coating with Valspar MR 225 Aerosol (75-28-5, 74-98-6, 100-41-4, 75-09-2). The coupons were placed into a convection oven at 150 F and allowed to cure overnight. After the coupons were cooled to room temperature, a second set of weights were recorded to determine the amount of contaminants were added.
Three coupons were cleaned in each product for five minutes using ultrasonic energy. After cleaning the coupons were removed and dried using compressed air at room temperature. Final weights were to be recorded after coupons were dry. Observations were made and recorded.
Trial Results:
Cleaning the mold release agents in ultrasonic cleaning yielded marginal success with some of the products. The table below lists the amount of soil added, the amount remaining after cleaning and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Aquavantage 1400
0.0546
0.0537
1.65
0.0400
0.0388
3.00
0.0523
0.0520
0.57
Shopmaster LpH
0.0374
0.0358
4.28
0.0413
0.0406
1.69
0.0515
0.0514
0.19
Daraclean 282
0.0394
0.0399
-1.27
0.0406
0.0403
0.74
0.0414
0.0408
1.45
Beyond 2006
0.0349
0.0334
4.30
0.0540
0.0531
1.67
0.0359
0.0338
5.85
Polyspray Jet 790 XS
0.0209
0.0226
-8.13
0.0302
0.0304
-0.66
0.0249
0.0220
11.65
Crest 211
0.0443
0.0446
-0.68
0.0426
0.0420
1.41
0.0272
0.0274
-0.74
SC Aircraft 7 Metal
0.0425
0.0350
17.65
0.0353
0.0313
11.33
0.0310
0.0303
2.26
Amberclen L12
0.0287
0.0252
12.20
0.0181
0.0160
11.60
0.0255
0.0193
24.31
Crest 14
0.0376
0.0266
29.26
0.0310
0.0191
38.39
0.0211
0.0110
47.87
Ionox HC 2
0.0445
0.0373
16.18
0.0402
0.0234
41.79
0.0292
0.0084
71.23
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Only two of the products removed a substantial amount of soil during the ultrasonic cleaning. Further testing will be conducted on other semi-aqueous products due to the lack of success with aqueous based cleaners.
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