| 摘要 |
PURPOSE:To raise resistance to liquid leakage by using a sealant obtained by adding a petroleum resin to asphalt. CONSTITUTION:The sealant layer 8 consisting of asphalt and a pertroleum resin is formed between the metal sealing plate 1 serving a negative side terminal and the packing 6 of nylon, etc., serving to isolate the positive side terminal from the negative side terminal and also to keep it air-tight. The sealant mentioned above is obtained by mixing a blown asphalt and a cyclopentadiene series petroleum resin in a proportion of 100:50 by weight, and the sealant is dissolved in an appropriate organic solvent and then coated on the surface of the metal sealing plate or injected into between the metal sealing plate and the packing. |
