Self lubricating polybenzimidazole shaped articles
    3.
    发明授权
    Self lubricating polybenzimidazole shaped articles 失效
    自润滑聚苯并咪唑型制品

    公开(公告)号:US5384352A

    公开(公告)日:1995-01-24

    申请号:US98541

    申请日:1993-07-28

    IPC分类号: C08K3/04 C08K3/38 C08K3/16

    CPC分类号: C08K3/04 C08K3/38

    摘要: A compactible polybenzimidazole composition contains from about 95 to about 5 weight percent of solid lubricant particles which are uniformly dispersed and encapsulated in from about 55 to about 95 weight percent of polybenzimidazole. The solid lubricant comprises graphite and boron nitride in a weight ratio of about 10:1 to about 1:10. The composition is useful for preparing self lubricating, shaped articles such as bearings, bearing sleeves, rings, seals, etc. which exhibit low friction properties.

    摘要翻译: 可压缩的聚苯并咪唑组合物包含约95至约5重量%的固体润滑剂颗粒,其均匀分散并包封在约55至约95重量%的聚苯并咪唑中。 固体润滑剂包括重量比为约10:1至约1:10的石墨和氮化硼。 该组合物可用于制备显示低摩擦性能的自润滑成型制品,例如轴承,轴承套筒,环,密封件等。

    Process for pressure sintering polymeric compositions
    4.
    发明授权
    Process for pressure sintering polymeric compositions 失效
    压力烧结聚合物组合物的方法

    公开(公告)号:US5167889A

    公开(公告)日:1992-12-01

    申请号:US712362

    申请日:1991-06-10

    摘要: A process for heat treating polymeric compositions into a shaped article comprising the steps of:a. placing a polymeric composition into a molding means;b. adding a compactible material to the molding means to surround the polymeric composition;c. pressuring the molding means containing the polymeric composition to force its particles into intimate contact with the compactible material, and clamping the molding means so as to maintain the pressurized state;d. heat treating the pressurized molding means containing the polymeric composition to form a densified, shaped article; ande. releasing the pressure on the molding means and removing the heat treated, shaped article.

    摘要翻译: 一种将聚合物组合物热处理成成型制品的方法,包括以下步骤:a。 将聚合物组合物置于模制装置中; b。 向所述模制装置添加可压缩材料以围绕所述聚合物组合物; C。 对包含聚合物组合物的模制装置进行加压以迫使其颗粒与可压实材料紧密接触,并夹紧模制装置以保持加压状态; d。 热处理包含聚合物组合物的加压成型装置以形成致密的成型制品; 和e。 释放模制装置上的压力并去除热处理的成型制品。

    Process of making a sintered polybenzimidazole article
    5.
    发明授权
    Process of making a sintered polybenzimidazole article 失效
    制备烧结聚苯并咪唑制品的方法

    公开(公告)号:US4861537A

    公开(公告)日:1989-08-29

    申请号:US223856

    申请日:1988-07-25

    IPC分类号: C08G73/18

    CPC分类号: C08G73/18

    摘要: Sintered polybenzimidazole articles are obtained by compacting a particulate, dried polybenzimidazole resin under a pressure of 2,000 to 10,000 psi in a mold, heating the formed article to a temperature in the range of 825.degree. to 950.degree. F. for at least four hours, cooling the polybenzimidazole article to below 800.degree. F. while maintaining the article under a pressure of 2,000 to 10,000 psi, and thereafter heating the constrained formed polybenzimidazole article to a temperature in the range of 825.degree. to 950.degree. F. for at least one hour.

    摘要翻译: 烧结聚苯并咪唑制品通过在模具中在2,000至10,000psi的压力下压实颗粒状干燥的聚苯并咪唑树脂获得,将成型制品加热至825-950°F的温度至少4小时,冷却 聚苯并咪唑制品低于800°F,同时在2,000至10,000psi的压力下保持制品,然后将约束形成的聚苯并咪唑制品加热至825℃至950℃的温度至少1小时。

    Sintered polybenzimidazole article
    7.
    发明授权
    Sintered polybenzimidazole article 失效
    烧结聚苯并咪唑制品

    公开(公告)号:US4814530A

    公开(公告)日:1989-03-21

    申请号:US92493

    申请日:1987-09-03

    CPC分类号: C08G73/18

    摘要: Sintered polybenzimidazole articles are obtained by compacting a particulate, dried polybenzimidazole resin under a pressure of 2,000 to 10,000 psi in a mold, heating the formed article to a temperature in the range of 825.degree. to 950.degree. F. for at least four hours, cooling the polybenzimidazole article to below 800.degree. F. while maintaining the article under a pressure of 2,000 to 10,000 psi, and thereafter heating the constrained formed polybenzimidazole article to a temperature in the range of 825.degree. to 950.degree. F. for at least one hour.

    摘要翻译: 烧结聚苯并咪唑制品通过在模具中在2,000至10,000psi的压力下压实颗粒状干燥的聚苯并咪唑树脂获得,将成型制品加热至825-950°F的温度至少4小时,冷却 聚苯并咪唑制品低于800°F,同时在2,000至10,000psi的压力下保持制品,然后将约束形成的聚苯并咪唑制品加热至825℃至950℃的温度至少1小时。