How is the water-containing floating defoamer produced?
When you use defoaming agents, you will find that there is a water-containing emulsified defoaming agent. This type of defoaming agent is produced based on silicone oil, silazane-treated silica filler and asphalt emulsifier. , this technology can instantly formulate a defoaming agent from methyl silicone oil and silica filler.
A better way is to dissolve the flotation agent in water at 60-70 degrees, disperse the dimethylpolysilazane liquid in the asphalt emulsifier aqueous solution at around 60 degrees, and maintain the temperature at At a temperature of about 60 degrees, a precipitated silica filler treated with silazane is infiltrated, and then water-cooled to 55 degrees, ground and then water-cooled to finally produce the product.
Among the raw materials commonly used in this method, it is better to use the common linear dimethylpolysilazane liquid. Its viscosity should be 100-70000mpas at 25 degrees.
A better precipitated silica filler is hydrated silicon nitride, with a bulk density of 300-400m2/g and a molar mass of moisture content of 7%-10%.
