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Wynspread SW - 277 Superwetting per schiume antincendio

WynSpread SW-277 Superwetting for Firefighting Foams

Breve descrizione:

There’s serious science behind getting firefighting foams to spread across fuel

It comes down to the spreading coefficient. In simple terms, it’s the difference between the surface tension of the fuel and the interfacial tension between it and the firefighting liquid.

If the spreading coefficient is positive, the firefighting liquid well spread. If it’s not, wetting will not be complete, and the fire can rage on unabated.



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Historically, drastically reducing surface tension was a job for fluorinated surfactants, such as perfluoroalkyl surfactants (or PFAS), but these solutions have come under scrutiny due to environmental and human health concerns.

Le soluzioni Afff di prossima generazione dipendono dai tensioattivi in ​​silicone

AFFF formulators are now turning their attention to silicone surfactants, more specifically trisiloxane alkoxylates, which have shown exceptional performance in AFFF solutions, as well as spreading applications in the agriculture, coating, paints and textile industries.

I tensioattivi in ​​silicone possono ridurre drasticamente la tensione della superficie acquosa, con conseguente eccellente diffusione e schiume stabili con durata estesa.

Caratteristiche chiave e vantaggi

• Lower surface tension compared to traditional organic surfactants.

• Able to form stable foams that spread across low energy hydrocarbon烃 surfaces, such as fuels

• Formulated without fluorine. 

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