Method for determining the environmental stress cracking resistance of
plastic articles
    1.
    发明授权
    Method for determining the environmental stress cracking resistance of plastic articles 失效
    确定塑料制品的耐环境应力开裂性的方法

    公开(公告)号:US4829839A

    公开(公告)日:1989-05-16

    申请号:US202113

    申请日:1988-06-03

    摘要: A method and device are disclosed for the determination of the environmental stress crack resistance (ESCR) of polymer articles made from polymers such as acrylonitrile-butadiene-styrene copolymers, polycarbonate, polystyrene and blends thereof. The method and device involve the external application of stress to an unstressed test article which has been exposed to a stress cracking agent. The stress is induced by means of a weight located below the horizontal plane of the plastic article. The time between the application of stress and the cracking of the test article is measured to compute a characteristic ESCR parameter and thereby evaluate the environmental stress crack resistance of the article.

    摘要翻译: 公开了用于确定由聚合物如丙烯腈 - 丁二烯 - 苯乙烯共聚物,聚碳酸酯,聚苯乙烯及其共混物制成的聚合物制品的环境应力抗裂性(ESCR)的方法和装置。 该方法和装置涉及对已经暴露于应力开裂剂的未受压制试验物品外部施加应力。 应力通过位于塑料制品的水平面下方的重物引起。 测量施加应力和测试物体的裂纹之间的时间以计算特征ESCR参数,从而评估制品的耐环境应力开裂性。

    Method and device for determining the environmental stress cracking
resistance of plastic articles
    2.
    发明授权
    Method and device for determining the environmental stress cracking resistance of plastic articles 失效
    用于确定塑料制品的耐环境应力开裂性的方法和装置

    公开(公告)号:US4750369A

    公开(公告)日:1988-06-14

    申请号:US895892

    申请日:1986-08-12

    摘要: A method and device are disclosed for the determination of the environmental stress crack resistance (ESCR) of polymer articles made from polymers such as acrylonitrile-butadiene-styrene copolymers, polycarbonate, polystyrene and blends thereof. The method and device involve the external application of stress to an unstressed test article which has been exposed to a stress cracking agent. The stress is induced by means of a weight located below the horizontal plane of the plastic article. The time between the application of stress and the cracking of the test article is measured to compute a characteristic ESCR parameter and thereby evaluate the environmental stress crack resistance of the article.

    摘要翻译: 公开了用于确定由聚合物如丙烯腈 - 丁二烯 - 苯乙烯共聚物,聚碳酸酯,聚苯乙烯及其共混物制成的聚合物制品的环境应力抗裂性(ESCR)的方法和装置。 该方法和装置涉及对已经暴露于应力开裂剂的未受压制试验物品外部施加应力。 应力通过位于塑料制品的水平面下方的重物引起。 测量施加应力和测试物体的裂纹之间的时间以计算特征ESCR参数,从而评估制品的耐环境应力开裂性。

    Micro-optic coupler incorporating a tapered fiber
    4.
    发明授权
    Micro-optic coupler incorporating a tapered fiber 有权
    结合锥形光纤的微光耦合器

    公开(公告)号:US06477301B1

    公开(公告)日:2002-11-05

    申请号:US09593648

    申请日:2000-06-13

    IPC分类号: G02B626

    摘要: Systems and methods are described for the construction of micro-optical couplers incorporating optical tapers to reshape multimode optical inputs. Incorporating tapers allows the spatial properties of the multimode inputs to be adjusted to match to the spatial properties of the output fiber, even in systems that are limited to unity-magnification imaging optics. In an exemplary embodiment, a larger-core multimode fiber and a smaller-core double-clad fiber are glued into a glass capillary, with the multimode fiber tapering to a smaller diameter inside the capillary. Polishing the capillary to expose the taper gives a multimode core that is smaller than the double-clad core. Imaging with unity magnification through a GRIN lenses and a dichroic reflector transfers the multimode input efficiently to the double-clad fiber with greater efficiency than would have been possible with the same optics and an untapered fiber. The dichroic reflector is transparent to a second singlemode signal input, which is collimated by a second GRIN lens and coupled to through the reflector to the core of the double-clad fiber. An isolator may be included in the signal beam path, and the double-clad fiber may be replaced by a double-clad gain fiber.

    摘要翻译: 描述了用于构建包含光锥的微光耦合器来重构多模光输入的系统和方法。 结合锥度允许调整多模输入的空间属性以匹配输出光纤的空间属性,即使在限于单位放大成像光学系统的系统中也是如此。 在一个示例性实施例中,大芯多模光纤和较小芯双包层光纤被胶合到玻璃毛细管中,多模光纤在毛细管内逐渐变细直径。 抛光毛细管以暴露锥度给出了比双包层核心小的多模芯。 通过GRIN透镜和二向色反射镜以单位放大率成像,可以将多模输入有效地传输到双包层光纤,效率高于同一光学器件和无光纤光纤的效率。 二向色反射器对于第二单模信号输入是透明的,第二单模信号输入由第二GRIN透镜准直并且通过反射器耦合到双包层光纤的芯。 隔离器可以包括在信号光束路径中,并且双包层光纤可以由双包层增益光纤代替。

    Apparatus for controlling the viscosity of wire coating enamel
    6.
    发明授权
    Apparatus for controlling the viscosity of wire coating enamel 失效
    用于控制电线涂层搪瓷的粘度的装置

    公开(公告)号:US4773438A

    公开(公告)日:1988-09-27

    申请号:US80044

    申请日:1987-07-31

    IPC分类号: G05D24/02

    CPC分类号: G05D24/02 Y10T137/2506

    摘要: An apparatus for controlling the flow of a diluent to adjust the viscosity of a magnet wire coating enamel solution is disclosed. The apparatus comprises a flow loop, a pressure sensor, a proportional controller and a flow control valve.

    摘要翻译: 公开了一种用于控制稀释剂流动以调节电磁线涂层搪瓷溶液的粘度的装置。 该装置包括流动回路,压力传感器,比例控制器和流量控制阀。