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Trial Number 4

Trial Purpose:

To conduct testing on possible drop in solvents for cleaning of the Dow Corning Vacuum grease.

Date Run:

03/15/2016

Experiment Procedure:

Aluminum coupons were arranged into rows of 3. Once the initial weights were taken, the lower third of the coupons were soiled. The coupons were places into the solvent drop in replacement solutions.  Observations were taken during the process. The coupons were immersed for 5 minutes and removed to air dry on a drying rack for 15 minutes.  Final weights were recorded once the coupons were dried.

Trial Results:

All the drop-in solvents replacement products left a white film after drying is complete.

Cleaner Initial Wt. Clean Wt. % Removal
FluoSolv CX      
  0.2444 0.0179 92.67
  0.2015 0.0020 99.01
  0.1862 0.0020 98.92
FluoSolv NC      
  0.1874 0.0340 81.85
  0.2121 0.0018 99.15
  0.1412 0.0005 99.64
Solstice PF      
  0.3546 0.0188 94.69
  0.0676 0.0076 88.75
  0.2349 0.0055 97.65
Solstice PF-2A      
  0.1445 0.0163 88.72
  0.2089 0.0053 97.46
  0.2697 0.0017 99.36
Vertrel Sion      
  0.6582 0.5137 21.95
  0.4454 0.1804 59.50
  0.4693 0.3650 22.22
FluoSolv CX-500      
  0.4652 0.4338 6.75
  0.5193 0.4962 4.45
  0.5376 0.5153 4.15
FluoSolv FR-110      
  0.7155 0.6953 2.82
  0.6374 0.6224 2.35
  0.7600 0.7393 3.21

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

FluoSolv CX, FluoSolv NC, Solstice PF and Solstice PF-2A were effective in removing the grease with an average remove rate above 90%. However, the performance of Vertrel Sion, FluoSolv CX-500 and FluoSolv FR-100 was very disappointing with removal rate ranging between 2.8% to 34%.

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