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To re-evaluate products for removing mold release agents only
Eight products selected from the lab's database. Two additional product were selected based on client input. Nine products were diluted to 5% by volume in 600 ml glass beakers using DI water. The remaining product was used at full strength. Products were used at room temperature.
Thirty preweighed coupons were first coated with Valspar MR 225 mold release (100-41-4, 1330-20-7, 8052-41-3, 67-63-0, 108-88-3, 110-82-7, 64742-89-8), followed by a second coating with Valspar MR 225 Aerosol (75-28-5, 74-98-6, 100-41-4, 75-09-2). The coupons were placed into a convection oven at 150 F and allowed to cure overnight. After the coupons were cooled to room temperature, a second set of weights were recorded to determine the amount of contaminants were added.
Three coupons were cleaned in each product for five minutes using stir-bar agitation. After cleaning the coupons were removed and dried using compressed air at room temperature. Final weights were to be recorded after coupons were dry. Observations were made and recorded.
Cleaning the mold release agents in immersion cleaning did not yield any successful products. The table below lists the amount of soil added, the amount remaining after cleaning and the efficiency for each coupon cleaned.
|Cleaner||Initial wt||Final wt||% Removed|
|Polyspray Jet 790 XS||0.0207||0.0209||-0.97|
|SC Aircraft 7 Metal||0.0426||0.0425||0.23|
|Ionox HC 2||0.0426||0.0445||-4.46|
Success Rating:Test incomplete or inconclusive.
The same ten products will be evaluated using heated ultrasonic cleaning.