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Trial Number 1

Trial Purpose:

To evaluate products for removing colloidal graphite mold release agent using ultrasonics energy

Date Run:

07/28/2005

Experiment Procedure:

Five products were selected from the previous trial and used at the same concentrations. Each product was suspended in water heated to 120 in a Crest Ultrasonic 40 kHz tank. The solutions were degassed for five minutes.
Fifteen preweighed coupons were again 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 ultrasonic 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:

Four of the products removed over 69% of the soil using ultrasonic energy. Only one product removed under half of the graphite colloidal mold release agent. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
815 GD 0.0013 0.0002 84.62
  0.0028 0.0005 82.14
  0.0052 0.0007 86.54
Micro 90 0.0071 0.0019 73.24
  0.0046 0.0020 56.52
  0.0081 0.0017 79.01
Inproclean 3800 0.0097 0.0010 89.69
  0.0113 0.0025 77.88
  0.0031 0.0009 70.97
Citranox 0.0023 0.0018 21.74
  0.0031 0.0016 48.39
  0.0050 0.0013 74.00
Coil Bright 0.0073 0.0023 68.49
  0.0089 0.0020 77.53
  0.0079 0.0023 70.89

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The four successful products will be used to clean the supplied soiled parts using ultrasonic cleaning.

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