Defoamer selection and evaluation methods
Defoamer selection and evaluation methods The defoamer must be able to spread quickly on the foam surface and penetrate quickly, causing the foam to break quickly. The commonly used defoamer types at present are silicone and polyacrylate. Silicone defoamers are usually polysiloxane-type. For example, polydimethylsiloxane containing acrylate functional groups and polyether-modified polydimethylsiloxane. Silicone has become…