Trial Purpose:
To evaluate selected cleaners for the removal of graphite based colloidal mold release agent.
Date Run:
07/28/2005Experiment Procedure:
Seven products were selected based on similar testing from the laboratory's database of test results. Five alkaline products were diluted to 5% using DI water in 600 ml beakers. Two acidic products were also selected. One product was diluted to 6% and the second was diluted to 20% based on vendor recommended concentrations. Water was also evaluated. All eight beakers were heated to 130 F on a hot plate.
Eighteen preweighed aluminum coupons were coated with the Acheson Colloids Co Aquadag M mold release agent (CAS#: 7782-42-5, 84122-50-6, 70131-67-8, 1333-86-4, 107-21-1, 9002-84-0). The mold release was initially dried for 5 minutes using a Master Appliance Heat Gun at 500 F. The coupons were then subjected to another 10 minutes of drying. Coupons were allowed to sit overnight, followed by 2 hours of drying in an oven at 500 F. After the drying, coupons were allowed to cool to room temperature and weighed a second time to determine the amount of soil added to the coupons.
Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. Coupons were rinsed in a tap water bath for 15 seconds at 120 F and dried using compressed air blow off at room temperature for 30 seconds. Final weights were recorded and efficiencies were calculated.
Trial Results:
A couple of products removed over 50% of the soil and another three removed over 20%. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon.
| Cleaner | Initial wt | Final wt | % Removed |
| 815 GD | 0.0014 | 0.0014 | 0.00 |
| 0.0030 | 0.0021 | 30.00 | |
| 0.0014 | 0.0009 | 35.71 | |
| SC Aircraft & Metal | 0.0027 | 0.0027 | 0.00 |
| 0.0037 | 0.0036 | 2.70 | |
| 0.0013 | 0.0013 | 0.00 | |
| Micro 90 | 0.0048 | 0.0023 | 52.08 |
| 0.0036 | 0.0031 | 13.89 | |
| 0.0063 | 0.0057 | 9.52 | |
| Inproclean 3800 | 0.0067 | 0.0030 | 55.22 |
| 0.0078 | 0.0039 | 50.00 | |
| 0.0031 | 0.0016 | 48.39 | |
| Polyspary Jet 790 P | 0.0112 | 0.0090 | 19.64 |
| 0.0020 | 0.0017 | 15.00 | |
| 0.0018 | 0.0017 | 5.56 | |
| Citranox | 0.0125 | 0.0053 | 57.60 |
| 0.0020 | 0.0019 | 5.00 | |
| 0.0054 | 0.0047 | 12.96 | |
| Coil Bright | 0.0092 | 0.0027 | 70.65 |
| 0.0027 | 0.0016 | 40.74 | |
| 0.0080 | 0.0024 | 70.00 | |
| Water | 0.0049 | 0.0047 | 4.08 |
| 0.0118 | 0.0095 | 19.49 | |
| 0.0032 | 0.0031 | 3.12 |
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 five products that showed some cleaning will be retested using ultrasonic cleaning.
