604 フッ素樹脂PTFEの遠心力成形(OS 粉末加工)
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概要
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Injection molding cannot be applied to PTFE, the melt viscosity of which is too high. Three dimensional parts of PTFE have been produced by machining block materials. A new process is proposed in which polymerized PTFE particles in water are precipitated compactly in 3D cavities of mm size in the centrifugal field stronger than 10,000g, without fibrillation which is peculiar to raw PTFE, and the shrunk compacts of ordinary density are taken out of the cavities after the subsequent drying and sintering.
- 2001-11-02