Four chemistries from the previous experiment were used in addition to three other chemistries. One preweighed aluminum coupon for each cleaner was coated with ink using a swab. The coupons sat for three hours and weighed again. A plastic eye dropper was used to transfer the full-strength cleaner onto the coupon. After five minutes the coupon was wiped with a paper towel to determine if any cleaning was occurring. Observations were recorded. More cleaner was added to the coupon. At the end of the second five-minute interval, coupons were wiped again, and observations made. The coupons were wiped dry, and the final weights were measured.
SUBSTRATE MATERIAL: Aluminum 6061 T-4 CONTAMINANTS: Ink-Poly 2700 Process Red
Trial Results:
Table 1 lists the observations made at both five-minute intervals. And Table 2 list the cleaning efficiencies of the cleaners at full strength.
Table 1 Observations Made
CLEANER
1st OBSERVATION (5 min)
2nd OBSERVATION (10 min)
Simple Green
No signs of removal
No good
Shopmaster
Complete Removal of Ink
Compliance
Turned towel pink
Turned towel pink
Soy Gold 1000
Some ink removed in sections
Complete removal of Ink
DE-OX 007
Very little signs of removal
No good
ND-17
Very little signs of removal
No good
InproClean 4000T
Some ink removed in sections
Complete removal of Ink
Table 2 Cleaning Efficiencies
Chemistry
% Contaminant Removed
Soy Gold
99.6
4000T
98.5
Simple Green
7.61
Compliance
3.72
ND-17
2.14
Shopmaster
100
DE-OX 007
8.01
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Three chemistries were able to remove the ink. Soy Gold 1000 (soy methyl ester), InproClean 4000T (semi-aqueous terpene) and Shopmaster (alkaline aqueous). MSDSs have been included for the three products.
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