All the products were diluted to 5% using DI water in 600 ml beakers. The solutions were heated to 145 F on a hot plate. Preweighed coupons were coated with the listed contaminants and weighed again. Three coupons with one contaminant were submersed into a beaker agitated with a magnetic stir bar. Cleaning lasted for 5 minutes followed by a tap water rinse at 120 F for 30 seconds and finally allowed to dry overnight at room temperature. Final clean weights were measured and cleaning effectiveness was calculated.
SUBSTRATE MATERIAL: The surface materials used are listed in Table 1.
Table 1. Substrates Used
Substrate Code ID#
Aluminum AL 202-2024 T-3
Brass BR 202-260 CA-260
Copper/Nickel CN 202-715 70/30
Stainless Steel SS 202-17-4 HR-68
Plastic PL N/A
CONTAMINANTS: The contaminants tested are listed in Table 2.
Table 2. Contaminants Used
Contaminant Code CAS#
Adhesive, acrylic sealant 5504 AD N/A
Flux, Ersin 5381 RMA FL N/A
Grease, KSL-111 GR 64742-47-8
Ink, Steel Blue IK 64-17-5, 67-63-0, 8004873, 123864, 71363, 9004-70-0
Oil, Citgo 400NC OI 64741-89-5, 8052-42-4