The purpose of this trial is to determine the most effective aqueous chemistry in removing the basecoat #51144 coating for Coatings Manufacturer. Seven chemistries will be tested at identical cleaning conditions (160F for 30 minutes with stir-bar agitation). The concentration of chemistry used will start out at 50% and decrease by increments of 10 %.
Cleanliness will be determined by a peel test. If an aqueous chemistry is effective, the urethane should easily be peeled off of coupon after cleaning.
SUBSTRATE MATERIAL: 304 Stainless Steel Coupons
CONTAMINANTS: Durane Base Coatings #51144 CONTAMINATING PROCESS USED: Rubbed on with swab and allowed to cure overnight
Trial Results:
Conc.
Aluminex 5761
Aluminex 5834
Aquaclean 4874
Polyspray P
69MC
Polyspray XS
Polyspray C
50%
X
X
*
X
X
X
40%
*
X
X
30%
X
20%
X
10%
*The Aquaclean works on a dissolving mechanism (due to high glycol ether content) performed a 100% removal.
X-indicates that the Basecoat #51144 was able to be peeled off of the coupon after cleaning
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
U.S. Polychem's 69MC outperformed all other aqueous cleaners tested to date.
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