Preparation of zinc stearate emulsion
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I’ve been working on zinc stearate emulsions recently. Initially, we tried to use zinc stearate in dry powder form for emulsification and dispersion, followed by grinding and homogenization. Now we’re encountering problems during the initial emulsification stage: whether we melt zinc stearate and add it gradually to the emulsifier for phase transition, or add dispersants, emulsifiers, and zinc stearate directly to water, a large amount of foam is generated. Adding defoamers doesn’t help either. These aren’t bubbles caused by the emulsifier; I suspect it’s due to zinc stearate itself. Whether we reduce the solid content by adding more water, there’s still a lot of foam. Could anyone with experience give some advice?
Perhaps the antifoam agent chosen is not suitable; fewer emulsified samples can be sent for a systematic evaluation of the antifoam agent You can message me privately for details