公开(公告)号：US4094943A

公开(公告)日：1978-06-13

申请号：US657998

申请日：1976-02-13

申请人： James C. Administrator of the National Aeronautics & Space Administration, with respect to an invention of Fletcher ,  John T. Howarth ,  Suresh Sheth ,  Kenneth R. Sidman ,  Arthur A. Massucco

发明人： James C. Administrator of the National Aeronautics & Space Administration, with respect to an invention of Fletcher ,  John T. Howarth ,  Suresh Sheth ,  Kenneth R. Sidman ,  Arthur A. Massucco

IPC分类号： C08G18/46 ,  C08K5/03 ,  C08K5/521 ,  B29H21/04

CPC分类号： C08K5/03 ,  C08G18/4607 ,  C08K5/521

摘要： Flame retardant elastomeric compositions comprised of either spandex type polyurethane having incorporated into the polymer chain halogen containing polyols, conventional spandex type polyurethanes in physical admixture with flame retardant additives or fluoroelastomeric resins in physical admixture with flame retardant additives, methods of preparing fibers of the flame retardant elastomeric materials and articles of manufacture comprised of the flame retardant elastomeric materials and non-elastic materials such as polybenzimidazoles, fiberglass, nylons, etc.

摘要翻译： 阻燃弹性体组合物包括掺入聚合物链含卤素的多元醇中的氨纶型聚氨酯，与阻燃添加剂物理混合的传统氨纶类聚氨酯或与阻燃添加剂物理混合的氟弹性体树脂，制备阻燃剂纤维的方法 由阻燃弹性体材料和非弹性材料如聚苯并咪唑，玻璃纤维，尼龙等组成的弹性材料和制品

公开(公告)号：US4092274A

公开(公告)日：1978-05-30

申请号：US708951

申请日：1976-07-26

申请人： James C. Administrator of the National Aeronautics & Space Administration with respect to an invention of Fletcher ,  Edward S. Harrison ,  Chadwick B. Delano ,  Salvatore R. Riccitiello

发明人： James C. Administrator of the National Aeronautics & Space Administration with respect to an invention of Fletcher ,  Edward S. Harrison ,  Chadwick B. Delano ,  Salvatore R. Riccitiello

IPC分类号： C08G73/18 ,  C08J9/14

CPC分类号： C08J9/142 ,  C08G73/18 ,  C08J2379/04

摘要： Foamed cross-linked poly-N-arylenebinzimidazoles are prepared by mixing an organic tetraamine and an ortho substituted aromatic dicarboxylic acid anhydride in the presence of a blowing agent and then heating the prepolymer to a temperature sufficient to complete polymerization and foaming of the reactants. In another embodiment of the process, the reactants are heated to form a prepolymer. The prepolymer is then cured at higher temperatures to complete foaming and polymerization.

摘要翻译： 通过在发泡剂的存在下混合有机四胺和邻位取代的芳族二羧酸酐，然后将预聚物加热到足以使反应物完全聚合和发泡的温度来制备发泡的交联聚-N-亚芳基苯并咪唑。 在该方法的另一个实施方案中，将反应物加热以形成预聚物。 然后将预聚物在较高温度下固化以完成发泡和聚合。

公开(公告)号：US4018080A

公开(公告)日：1977-04-19

申请号：US657995

申请日：1976-02-13

申请人： James C. Administrator of the National Aeronautics & Space Administration, with respect to an invention of Fletcher ,  Page K. Evans ,  Dan L. Shady

发明人： James C. Administrator of the National Aeronautics & Space Administration, with respect to an invention of Fletcher ,  Page K. Evans ,  Dan L. Shady

IPC分类号： G01N3/18

CPC分类号： G01N3/18

摘要： A device for tensioning test specimens within an hermetically sealed chamber. The device is characterized by a support column adapted to be received within an insulated, hermetically sealable chamber, a plurality of anchor pins mounted on the column for releasibly connecting thereto a plurality of test specimens, a plurality of axially displaceable pull rods received by the column in coaxial alignment with the anchor pins, one end of each pull rod being provided with a coupling for connecting the pull rod to a test specimen, while the opposite end of the pull rod is extended through a cover plate and adapted to be connected with a remotely related linear actuator through a connecting link including a load cell for measuring stress as the pull rod is placed in tension by the actuator.

摘要翻译： 用于在气密密封室内张紧试样的装置。 该装置的特征在于支撑柱适于容纳在绝缘的可气密密封的腔室内，多个固定销安装在柱上以可释放地连接到多个测试样本上，多个可由柱子接收的可轴向移动的拉杆 与锚销同轴对准，每个拉杆的一端设置有用于将拉杆连接到测试样本的联接件，而拉杆的相对端延伸穿过盖板并适于与一个 远程相关的线性致动器通过连接链路，包括负载传感器，用于当拉杆被致动器张紧时测量应力。