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To evaluate alternative products on cleaning a primer-topcoat combination using ultrasonic cleaning.
The selected products were diluted to 5% using DI water in 250 ml beakers and heated to 130 F on a hot plate. The client supplied product was used at full strength.
Coupons were first coated with the two part primer formulation from RPM Wood Finishes Group. It contained, MS2664 Catalyst White (108-10-1, 28182-81-2, 822-06-0) at three parts and MS2669 Primer (108-10-1, 28182-81-2, 822-06-0) at one part. The mixed paint/primer was applied to eighteen preweighed steel coupons and allowed to dry. Following the primer coat, the paint formulation from RPM Wood Finishes Group consisting of MS2664 Catalyst White (108-10-1, 28182-81-2, 822-06-0) at three parts and 9-6LP9258 White Primer Topcoat (13463-67-7, 110-43-0, 123-86-4, 108-10-1, 108-38-3) at one part was applied to the coupons and allowed to dry. A second weight was recorded to determine the amount of primer and paint applied.
Three painted coupons were immersed in a cleaning product and cleaned for 10 minutes using a 40 kHz ultrasonic tank. After the cleaning, coupons were rinsed in a tap water bath for 15 seconds at 120 F and air dried for 30 seconds at room temperature. The coupons were then rubbed with a gloved hand to determine how easily the paint could be removed. Once dry, the coupons were weighed a final time and removal efficiencies were calculated.
Three of the alternatives, Solsafe 245, Inproclean 4000T and Surface Cleanse 930 were easily rubbed from the surface following cleaning. Both Aquavantage 3800 GD and Polychem A 2000 XS did allow the paint to be easily removed. The supplied product dissolved all of the paint mix from the coupons. The table below lists the amount of primer/paint applied, the amount remaining and the effectiveness of the products.
|Cleaner||Initial wt||Final wt||% Removed||Observations|
|0.0711||0.0048||93.25||Some Effort to start peeling|
|Aquavantage 3800 GD||0.1070||0.0062||94.21|
|0.0778||0.0542||30.33||Two cleaned easily, one had trouble|
|Inproclean 4000 T||0.0757||0.0039||94.85|
|A 2000 XS||0.1520||0.0060||96.05|
|0.0990||0.0383||61.31||Two cleaned easily, one had trouble|
|Surface Cleanse 930||0.0975||0.0040||95.90|
|0.1047||0.0064||93.89||Some Effort to start peeling|
Success Rating:A follow up test, usually based on company input.
The effective alternatives will be used on the supplied spindle coated with the corresponding paint mixture