| 摘要 |
PURPOSE:To manufacture easily and efficiently a PAS granulated matter whose particle density and bulk density are high, by a method wherein polyarylene sulfide resin powder is pressed into a space between press rolls by including the powder having the particle diameter within a specific range at a specific ratio or higher, compression-molded and crushed. CONSTITUTION:When dried powder of PAS powder is compressed, granulated and pulverization-treated by making use of a dry compression granulating machine under a nonmelting state, stability in a quality such as bulk denity and productivity of a granulated matter become preferable. A matter containing at least the 30wt.% PAS powder having particle diameter of less than 0.7mm is preferable as the PAS powder to be used and the granulated matter to be obtained is made so that its particle density is within a range of 0.7-1.5g/cc, bulk density is within a range of 0.4-0.8g/cc and at least the 50wt.% granulated matter possesses the particle diameter within a range of 0.7-20mm. A PAS particle material which has no problems in heat deterioration, thermal crosslinking, coloring and a viscosity change can be presented for molding using the PAS granulated matter and favorable molding is made possible. |
