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Trial Number 8

Client Number 469

Project Number 1

Trial Purpose:

To test the removal of grease from aluminum coupons with heated immersion for 30 minutes using stir bar.

Date Run:

02/18/2021

Experiment Procedure:

A 50% solution was created for Water Works and Dimethyl Glutarate was used at 100%. Three aluminum coupons per cleaner were pre-weighed for initial weights. They were then soiled 1/3 of the way with black grease that was given to us by the company and were weighed for dirty weights. The solutions were all heated on the hot plate till they reached 105 degrees Fahrenheit. Three coupons per cleaner were placed in the solutions and immersed for 30 minutes with a stir bar at 300 rpm. They were then left to dry for over an hour and final weights were taken. 

Cleaners:

  1. 100% Dimethyl Glutarate
  2. 50% Water Works

Trial Results:

Both cleaners were not effective at removing grease from aluminum. Dimethyl glutarate averaged around 47% and Water works was lower at 37%.

Cleaner Initial wt of cont Final wt of cont % removal Average
Dimethyl Glutarate 0.2333 0.0369 84.18 47.03
0.1249 0.1015 18.73
0.2227 0.1377 38.17
Water Works 0.2646 0.1881 28.91 36.87
0.2070 0.1429 30.97
0.2166 0.1067 50.74

Success Rating:

Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.

Conclusion:

Both cleaners were not effective. Next steps are to use ultrasonics with heated immersion.

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