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    • 1. 发明授权
    • Power cylinder non-metallic liner seal assembly
    • 动力缸非金属衬套密封组件
    • US06395359B1
    • 2002-05-28
    • US08910844
    • 1997-08-13
    • James E. McGrathNicholas O. Venier
    • James E. McGrathNicholas O. Venier
    • E21D1552
    • F15B21/06F15B15/1428Y10T428/1393Y10T428/1397
    • Corrosion resistance is provided for a power cylinder by providing a preloaded molded urethane elastomer sleeve liner within an outer cylinder of material such as a copper/nickel alloy which is subject to corrosion from long-term exposure to ambient fluids such as sea water. Preloading is preferably provided by thermal shrink fitting of the molded urethane sleeve liner to the inner bore of an outer metal cylinder. Preloading of a structure which has high structural integrity and low permeability thus effectively prevents incursion of fluids and gases at the interface between the outer cylinder and the sleeve liner as well as providing a surface which can be machined to a high degree of smoothness and against which reciprocating piston seals and wear assemblies can directly ride and which is resistant to abrasion therefrom even at high piston speeds.
    • 通过在诸如铜/镍合金的材料的外圆筒内提供预加载的模制的聚氨酯弹性体套筒衬套来提供动力缸的耐腐蚀性,该铜/镍合金从长期暴露于诸如海水的环境流体中经受腐蚀。 优选通过模制的聚氨酯套筒衬套与外金属圆筒的内孔的热收缩配合来提供预加载。 具有高结构完整性和低渗透性的结构的预加载因此有效地防止了流体和气体在外筒和套筒衬套之间的界面处的侵入以及提供可被加工成高度平滑度的表面, 往复式活塞密封件和磨损组件可以直接骑行,即使在高活塞速度下也能抵抗磨损。
    • 7. 发明授权
    • Materials for use as proton conducting membranes for fuel cells
    • 用作燃料电池质子导电膜的材料
    • US07473714B2
    • 2009-01-06
    • US11119353
    • 2005-05-02
    • Brian R. EinslaJames E. McGrath
    • Brian R. EinslaJames E. McGrath
    • B01J49/00B01J39/20
    • C08J5/2256C08G65/48C08G75/23C08J2371/12C08J2381/06
    • A family of polymers having pendent sulfonate moieties connected to polymeric main chain phenyl groups are described. These polymers are prepared by the steps of polymerization (using a monomer with a phenyl with an alkoxy substitution), deportation by converting the alkoxy to a hydroxyl, and functionalization of the polymer with a pendant sulfonate group. As an example, sulfonated poly(arylene ether sulfone) copolymers with pendent sulfonic acid groups are synthesized by the direct copolymerization of methoxy-containing poly(arylene ether sulfone)s, then converting the methoxy groups to the reactive hydroxyl form, and finally functionalizing the hydroxyl form with proton-conducting sites through nucleophilic substitution. The family of polymers may have application in proton exchange membranes and in other applications.
    • 描述了具有连接到聚合主链苯基的侧链磺酸酯部分的聚合物族。 这些聚合物通过聚合(使用具有烷氧基取代基的苯基)的单体,通过将烷氧基转化为羟基而进行递送的步骤,以及用磺酸侧基官能化聚合物来制备。 作为例子,通过直接共聚含甲氧基的聚(亚芳基醚砜),然后将甲氧基转化为反应性羟基,合成具有侧链磺酸基的磺化聚(亚芳基醚砜)共聚物,最后使 羟基与质子传导位点通过亲核取代。 聚合物族可以用于质子交换膜和其它应用中。