| abstract |
The present invention relates to an inorganic polymer electret in colloidal state, for example silica, produced by using a magnetic field gradient through which a material passes. In FIG. 8, the conduit outside of the hole 8 through the conduit 6 from the container 3 by the pump 1 in the conduit 2 with the substance 5, aqueous sodium silicate and NaOH and tripotassium citrate. 7) pumping the conduit 13 outside the hole 9 and the conduit 14 outside the hole 10 to backflow the material in both directions, sequentially entering the conduit 15 and the chamber 11, Finally it is moved back to the container 3 through the conduit 4. The magnetic booster units (A), (B) and (C) shown in FIG. 9 formed an electrostatic charge on the colloidal fasteners. |