Browse past lab clients by general industry sectors
To evaluate possible replacement cleaners for NPB in solder cleaning from electronics
Eight products were selected from the laboratories database based on client information and past successful testing. The solutions were used at 68 F. The four semi-aqueous products were used at full strength and the aqueous based products were diluted to 10% in 600 ml beakers using DI water.
Twenty four preweighed coupons were coated with Alpha Metals 615 Flux (67-63-0, 8052-41-3, 8050-09-7) using a hand held swab and allowed to dry. Coupons were then reweighed. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation, then rinsed in tap water at 68 F for 15 seconds followed by an air knife drying for 30 seconds. Once dry, final weights were recorded and efficiencies were calculated.
Five of the eight cleaners removed over 90% of the flux from the aluminum coupons using stir-bar agitation. Two removed between 85-90% and only Ozzy Juice SW 3 had difficulty removing the flux. Table 1 below lists the calculated efficiences for each coupon cleaned.
Table 1. Calculated Efficiencies
|Cleaner||Initial wt of cont.||Final wt of cont.||%Cont Removed|
|Bio T Max||0.0264||0.0017||93.56|
|Ionox HC 2||0.1485||0.0067||95.49|
|Ozzy Juice SW3||0.1283||0.1186||7.56|
|Armakleen E 2002||0.1277||0.0368||71.18|
Success Rating:Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
The top five cleaners will be used in the next trial using ultrasonic energy. Cleaning times will decreased to 2 minutes. All other parameters will be kept the same.