PURPOSE: To allow reactive gas or the like, apt to be decomposed or changed, to be filled and stored stably without decomposition for a long period of time by coating the inner wall surface of a metal bomb with polychloro- trifluoroethylene with the reduced content of a low-boiling-point polymer.
CONSTITUTION: General polychloro-trifluoroethylene (PCTFE) is heated into the fused state and bubbled through inert gas to obtain high-purity PCTFE. The inside of a bomb subjected to the inspection of the existence of foreign material and abnormality is derusted, and the bomb is heated in a furnace. The high-purity PCTFE is heated into fluid like liquid and injected into the bomb taken out of the furnace. At this time, the bomb is brought down into a horizontal position and rotated so as to distribute/attach the high-purity PCTFE liquid uniformly to the inner face of the bomb. The bomb is then placed in the inverted state inside the furnace so as to form uniform thin film like liquid on the inner surface of the bomb. Cooling is then performed while purging with nitrogen gas to form a thin film.
SETOGUCHI TORU
ISHIZEKI SADAO
IKEDA TAKUYA
HAYASHIDA NOBUYUKI
| JPS55115694A | 1980-09-05 |