| 摘要 |
The process comprises (i) homogeneously mixing butyl rubber 100 wt. parts, as base vulcanizer (sulfur 1.7 wt. parts, stearinic acid 2 wt. parts and zincate 3 wt. parts), reinforcements (carbon black 14 wt. parts. and carbon white 15 wt. parts) and filler (talc 2.5 wt. parts) and molding into a sealing sheet material, (ii) removing gas from the sheet for 30 min at 200 deg.C under vacuum, and (iii) adding a vulcanizing accelerator (TT 1.5 wt. parts and DM 0.7 wt. part) to the sheet for making condenser seal material.
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