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Trial Number 9

Client Number 469

Project Number 1

Trial Purpose:

To test the removal of grease on aluminum coupons using heated ultrasonics for 30 minutes.

Date Run:

03/05/2021

Experiment Procedure:

A 2:1 (33%) 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 then placed in the ultrasonic tank which was also heated to 105 degrees Fahrenheit. Three coupons per cleaner were placed in the solutions and immersed with ultrasonics for 30 minutes. They were then left to dry for over an hour and final weights were taken. 

Cleaners:

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

Trial Results:

Both cleaners were effective at removing grease from the aluminum coupons. Water Works averaged 80%, visually all that was left was patches of grease where the grease had been applied thick. Dimethyl Glutarate was lower at 69% removal, but only clumps of grease were left where the grease was applied thick. 

Cleaner Initial wt of cont Final wt of cont % Removal Average
Water Works 0.2358 0.0520 77.95 80.95
0.2538 0.0398 84.32
0.3703 0.0719 80.58
Dimethyl Glutarate 0.4545 0.1719 62.18 68.72
0.4267 0.1297 69.60
0.3681 0.0943 74.38

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 effective, grease was applied too thick which resulted in small patches left on the coupon. Next steps are to decrease the amount of grease applied and decrease the time immersed in the ultrasonic tank to check effectiveness at a quicker cleaning time.

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