Trial #3
To determine the most effective aqueous cleaner
There are no related objects.
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
| Conc.
|
Aluminex 5761
|
Aluminex 5834
|
Aquaclean 4874
|
Polyspray P
|
69MC
|
Polyspray XS
|
Polyspray C
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| 50%
|
X
|
X
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*
|
X
|
X
|
X
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| 40%
|
|
|
*
|
X
|
X
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|
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| 30%
|
|
|
|
|
X
|
|
|
| 20%
|
|
|
|
|
X
|
|
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| 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
U.S. Polychem's 69MC outperformed all other aqueous cleaners tested to date.
No relation