Insoluble silicone foam control for machine dishwash, CIP, and industrial cleaning u2014 polydimethylsiloxane (PDMS) fluids and crosslinked-silicone antifoam compounds.
Silicone defoamers are insoluble silicone-based additives that collapse andnprevent foam in cleaning processes by spreading low-surface-tension droplets across the foamnfilm until it ruptures. The two working forms are straight polydimethylsiloxanen(PDMS) fluids and crosslinked-silicone antifoam compounds, the latter built from branched orncrosslinked silicone with hydrophobic particles for stronger, longer-lasting knockdown. Bothnare effective at very low dosage, often well under 0.1% of the system.
nnPDMS fluids give fast foam knockdown in machine dishwash, rinse cycles, and clean-in-placen(CIP) circuits, and they are the default where foam must drop quickly. Crosslinked-siliconencompounds persist longer in high-agitation or surfactant-rich systems where a simple fluidnwould be consumed. The honest trade-off: silicones are the most effective antifoams available,nbut the same insolubility that breaks foam can leave deposits, cause cratering on coatednsurfaces, or spot glassware. Match the silicone type and dose to the process, and trialnrinse-sensitive applications first.
nnWhere a specification forbids silicone, or where surface deposits and spotting cannot bentolerated, non-silicone antifoams based on polyols or EO/PO copolymers are the alternative;nthey are weaker but leave no silicone residue. For most institutional and industrial cleaning,na silicone defoamer is the first choice on performance. Confirm surface compatibility on thenactual substrate before scaling, because deposit and cratering behavior depends on the finish,nthe rinse, and the dose.
nWe use cookies and similar technologies for analytics and to improve our Site, and — with your consent — for marketing and B2B visitor identification. Choose what to allow. See our Privacy Policy.