Trial Purpose:
Laboratory evaluations of alternative cleaning products
Date Run:
09/19/2003Experiment Procedure:
Basic cleaning performance testing was conducted using ASTM G122 as the bases for cleaning.
Five products were used at full strength, heated to 120 F on a hot plate. Fifteen preweighed coupons were coated with Kester Solder Flux 1544 (64-17-5, 78-92-2, 8050-09-7) and allowed to dry for two hours and reweighed. Three coupons were cleaned in each solution for 5 minutes using stir-bar-agitation, rinsed in a tap water bath for 15 seconds at 120 F and dried using air blow off for 30 seconds at 68 F. Coupons were allowed to dry overnight and then reweighed a final time. Efficiencies were calculated.
Note: Bio T Foam Plus was sprayed onto coupons at room temperature and allowed to sit for 5 minutes. The cleaner was then rinsed.
Trial Results:
Two products removed over 85% of the flux. Two others removed over 80% and the final product removed just over 70%. Many of the products could be improved with higher pressure drying to remove cleaner residue from the coupons.
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.Conclusion:
Two products, both dibasic esters, were effective in removing the flux from the coupons within five minutes.
