| 摘要 |
<p>The present invention provides a method for manufacturing a PTFE fine powder having superior handling characteristics. The present invention relates to a method for manufacturing a polytetrafluoroethylene fine powder characterized by including the steps of:
(1) preparing an aqueous dispersion containing polytetrafluoroethylene, water, and a surfactant (A);
(2) coagulating of the polytetrafluoroethylene in said aqueous dispersion by agitating said aqueous dispersion with a discharge flow-type impeller;
(3) collecting a wet powder of the polytetrafluoroethylene; and
(4) drying the wet powder of the polytetrafluoroethylene.</p> |
