PTFE微粉末の高精度定量供給に関する研究

（攪拌と粉砕の組み合わせによる効果）

抄録

The purpose of this research is to develop a device that can continuously supply PTFE fine powder with high accuracy. PTFE is used in a wide range of fields due to its excellent chemical properties, but it is difficult to continuously supply non-granulated PTFE powder due to its poor fluidity. In this research, in order to solve this problem, the hopper containing PTFE is vibrated in the horizontal direction, and the PTFE in the hopper is agitated. In addition, it is continuously supplied by introducing a crushing mechanism so that the PTFE does not solidify significantly. The experiment was conducted under three targets: supply value set to 0.8g ± 0.02g, target time set to within 40s, and target number of continuous supplies set to 100 times. As a result, in environment temperature of 21℃, it became possible to supply 100 times continuously while achieving the target accuracy of 90% or more. However, in environment temperature of 25℃, the supply was limited to about 45 times in a row. The crushing mechanism works effectively, but more effective control strategy is required in order to achieve all three targets at environment temperature of 25℃.