| 摘要 |
PURPOSE:To obtain fine particles of a resin material in a short time without causing softening of the material and without causing much noise by pulverizing lumps or granules of the material under impact in the presence of an inert liq. CONSTITUTION:Fine particles of a functional high-molecular resin material with an average particle size of 2-3mum are obtd. by supplying lumps or granules of the material together with water (as an inert fluid) to a pulverizer where the lumps or granules in a form of a mixture with water are pulverized under impact while cooling the machine itself and the material with water and thereby preventing softening of the material. Resin materials suitable to be thus pulverized include a styrenic or acrylic thermoplastic ion-exchange resin which softens at 80 deg.C or higher to absorb impact, an easily oxidizable anion-exchange resin with a low chemical resistance, a thermosetting functional high-molecular resin, and some natural resin. |
