| 摘要 |
PURPOSE: A high performance liquid gasket composition is provided to improve the sealing property due to its hybrid structure comprising a spacer and rubber. By using the liquid gasket composition, the time and cost spent for producing a gasket can be reduced owing to reduction in the vulcanization period and elimination of the mold fabrication process, and the sealing can be semi-permanent. CONSTITUTION: The high performance liquid gasket composition comprises, based on 100 pts.wt. of a butadiene rubber, 40-43 pts.wt. of carbon black, 0.5-0.8 pts.wt. of polyethylene glycol, 4-6 pts.wt. of a coupling agent, 0.7-1.2 pts.wt. of a peroxide type vulcanizing agent, 23-28 pts.wt. of paraffin-based oil and 2-5 pts.wt. of a dimension stabilizing agent. A gasket for a fuel cell is formed by applying the gasket composition to each of the upper and lower side of the spacer, in which the spacer is a polyester film having a thickness of 0.3-0.4 mm and the gasket composition is applied with a thickness of 0.15-2 mm and a width of 0.3-0.35 mm. |
