Trial Purpose:
To determine the most effective aqueous cleaner
Date Run:
03/04/1996Experiment Procedure:
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.
