Second attempt to find other alternative cleaners for the cleaning of phenolic resin.
Date Run:
04/02/1999
Experiment Procedure:
Five products were selected for the cleaning trial based on vendor information. Twenty-five milliliters of each cleaner were poured into a 30 mL vial. The contaminant was placed into each beaker. Each vial was covered with the supplied cap and shaken for 30 seconds. Observations were recorded. The shaking and observation cycle was repeated. One sample from the previous trial was heated to 120 F in a hot water bath so that the product could be evaluated at an elevated temperature.
SUBSTRATE MATERIAL: None CONTAMINANTS: Phenolic based Resin
Trial Results:
Savogran HD 34 started to dissolve the contaminant from the paper towel within the first five minutes, which was faster than the previous trials time of 30 minutes. For the rest of the products, no product showed signs of dissolving the contaminant until 2 hours had passed. After sitting for three days, this same cleaner had turned a very dark red, much darker than the HD 34 color. Table 1 lists the observations made at each time interval.
Table 1. Cleaning Observations
Cleaner
HD34 (heated)
Kyzen
Calgon
Gemtek
Brulin
US Polychem
5 minutes
Some dissolving
No dissolving
No dissolving
No dissolving
No dissolving
No dissolving
30minutes
Soft paper
Stiff paper
Stiff paper
Stiff paper
Stiff paper
Stiff paper
1 hour
Yellow/red
No dissolving
No dissolving
No dissolving
No dissolving
No dissolving
2 hours
Not tested
No dissolving
No dissolving
Some change
No dissolving
No dissolving
3 days
Not tested
No dissolving
No dissolving
Dark red
No dissolving
No dissolving
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Savogran HD 34 was shown to have an increased dissolving rate when heated to 120 F. Gemtek SC Supersolve was also proven to be able to dissolve the resin after a long period of time. This product will be tested with an increased temperature just like HD 34.
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