DuPont™ Zonyl® Fluorosurfactants are useful additives in electronics cleaners and polishes, and their low surface energy can give novel release properties.
Solder flux, cleaners, strippers and etch baths all function through creation of a thin film that thoroughly wets a substrate. To effectively wet a substrate the surface energy of the formulation must be lower than the surface energy of the substrate. Zonyl® fluorosurfactants are capable of creating solutions with surface energies as low as 18 dynes/cm.
Zonyl® offers unparalleled wetting and leveling power in both water- and solvent-borne formulations, and will remain effective in acidic and strongly basic formulations. Their effectiveness is achieved at extremely low concentrations.
Depending on the choice of surfactant, the presence of an adsorbed layer of fluorosurfactant can dramatically affect surfaces that have been treated with Zonyl® products, giving soil repellency benefits.
In most formulations Zonyl® is used in addition to conventional surfactants where it can lower the total cost of the surfactant addition and provide better performance as well. Typical formulations utilizing Zonyl® are able to reduce the loading of the conventional surfactant while creating an even lower surface tension of the formulated product.
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