Proton exchange membrane fuel cell external manifold seal
    12.
    发明授权
    Proton exchange membrane fuel cell external manifold seal 有权
    质子交换膜燃料电池外部歧管密封

    公开(公告)号:US06660422B2

    公开(公告)日:2003-12-09

    申请号:US09882750

    申请日:2001-06-15

    IPC分类号: H01M802

    摘要: A sealant system 13 for a manifold 10 of a proton exchange membrane fuel cell includes low temperature cured or heat cured silicone rubber bridges 14, 14a, 14c between the end plates 9 to compensate for the uneven edges of various fuel cell component layers, and a layer 15 of silicone rubber foam or sponge, or a molded silicone rubber gasket 15a, extending across the bridges and along the end plates, around the entire contact perimeter surfaces of the manifold, to seal the manifold to the fuel cell. The cured silicone rubber may extend along the end plates between the bridges. A rubber strip 20 may be adhered to the silicone rubber bridges and end plates. The bridges may comprise a first layer 22 of low shrinkage self-leveling RTV liquid rubber with viscosity in the range of 10,000-20,000 cps and a second layer 14 of RTV liquid rubber.

    摘要翻译: 用于质子交换膜燃料电池的歧管10的密封剂系统13包括在端板9之间的低温固化或热固化硅橡胶桥14,14a,14c,以补偿各种燃料电池组件层的不均匀边缘,以及 硅橡胶泡沫或海绵的层15或模制的硅橡胶垫片15a,围绕歧管的整个接触周边表面延伸穿过桥和沿端板,以将歧管密封到燃料电池。 固化的硅橡胶可以沿着桥之间的端板延伸。 橡胶条20可以粘附到硅橡胶桥和端板上。 桥可以包括粘度在10,000-20,000cps的低收缩自流平RTV液体橡胶的第一层22和RTV液体橡胶的第二层14。

    High temperature, high pressure chemical resistant seal material
    15.
    发明授权
    High temperature, high pressure chemical resistant seal material 失效
    耐高温,耐高压化学品的密封材料

    公开(公告)号:US4374185A

    公开(公告)日:1983-02-15

    申请号:US263660

    申请日:1981-05-14

    摘要: A seal material especially adapted for phosphoric acid fuel cell stack sealing is described comprising an unfilled, unoiled high molecular weight polytetrafluoroethylene. Although the seal material is especially adapted as the regular seal around the plenums separating the oxygen and hydrogen gas inlets and outlets, it can also be used as a plenum or stack crack sealer. The material provides seal integrity and stability at temperatures in excess of 400.degree. F. (204.degree. C.)., e.g. 400.degree. F. to 450.degree. F. (204.degree. C. to 232.degree. C.), in a corrosive chemical environment at differential pressures above 50 psi (e.g. 50 psi to 80 psi). It can be used in electrochemical cells in general where high temperature, high pressure, corrosive environments prevail.

    摘要翻译: 描述了特别适用于磷酸燃料电池堆密封的密封材料,其包括未填充的未开卷的高分子量聚四氟乙烯。 虽然密封材料特别适用于围绕分隔氧气和氢气入口和出口的气室周围的常规密封,但也可以用作气室或堆叠裂缝封隔器。 该材料在超过400°F(204°C)的温度下提供密封完整性和稳定性。 在高于50psi(例如50psi至80psi)的差压下的腐蚀性化学环境中,400°F至450°F(204℃至232℃)。 一般可以用于电化学电池中,高温高压,腐蚀性环境优越。