Biaxially drawn polyhexamethylene adipamide film and process for
producing same
    4.
    发明授权
    Biaxially drawn polyhexamethylene adipamide film and process for producing same 失效
    双轴拉伸聚己二酰己二胺聚酰亚胺薄膜及其制备方法

    公开(公告)号:US4352926A

    公开(公告)日:1982-10-05

    申请号:US149580

    申请日:1980-05-14

    摘要: Disclosed is a biaxially drawn polyhexamethylene adipamide film having a relative viscosity of at least 3.2 as measured at 25.degree. C. in aqueous 96% H.sub.2 SO.sub.4, a degree of crystallinity of from 35% to 45%, a birefringence (.DELTA.n) of not more than 0.006, as determined at any point in its entire area, and an initial modulus of elasticity in tension of at least 230 kg/mm.sup.2 as determined in ay direction across substantially its entire area. The film may be produced by a process wherein molten polyhexamethylene adipamide is extruded through a circular die gap and the tubular extrudate is brought in sliding contact with the outer periphery of an inside mandrel, thereby to be cooled, which process is characterized in that polyhexamethylene adipamide having a relative viscosity of from 3.3 to 5.0, as measured at 25.degree. C. in aqueous 96% H.sub.2 SO.sub.4, is used; the tubular extrudate formed therefrom is cooled at a cooling rate (X.degree. C./sec.) satisfying the following formula with respect to the relative viscosity of the polymer used,-100.times..eta.rel+1,200

    摘要翻译: 公开了一种双轴拉伸的聚己二酰己二胺聚酰胺薄膜,其在25℃,96%H 2 SO 4水溶液中的相对粘度至少为3.2,结晶度为35%至45%,双折射(DELTA n)不超过 大于0.006,如在其整个区域中的任何点所确定的,并且在基本上其整个区域上沿ay方向确定的至少230kg / mm 2的初始拉伸弹性弹性模量。 该膜可以通过其中熔融聚己二酰己二胺通过圆形模头间隙挤出并且管状挤出物与内芯轴的外周滑动接触从而被冷却的方法制备,该方法的特征在于聚己二酰己二胺 使用在25℃在96%H 2 SO 4水溶液中测得的相对粘度为3.3至5.0的相对粘度; 由此形成的管状挤出物以相对于所使用的聚合物的相对粘度满足下列公式的冷却速度(X℃/秒)冷却,-100x eta rel + 1,200

    Heater unit for vehicles
    5.
    发明授权
    Heater unit for vehicles 失效
    车辆加热装置

    公开(公告)号:US4691862A

    公开(公告)日:1987-09-08

    申请号:US868555

    申请日:1986-05-30

    摘要: A heater unit comprises a casing through which air flows in one direction from an inlet to outlets. A heater core is disposed within the casing for heating air passing therethrough. An air mix door is also disposed within the casing and has a pivotal end about which it is swingable for controlling the amount of air heated by the heater core and the amount of unheated air bypassing the same. In the above arrangement, air is difficult to pass through the heater core at a place adjacently behind the pivotal end of the air mix door whith respect to the direction of air flow. A tank portion of the heater core is disposed in the place adjacently behind the pivotal end of the air mix door with respect to the direction of air flow.

    摘要翻译: 加热器单元包括壳体,空气通过该壳体从入口到出口沿一个方向流动。 加热器芯设置在壳体内用于加热通过其中的空气。 空气混合门也设置在壳体内,并且具有枢转端,可摆动的位置用于控制由加热器芯加热的空气量和绕过加热器芯的未加热空气的量。 在上述布置中,空气难以通过加热器芯在空气混合门的枢转端附近相对于空气流动方向的相邻位置。 加热器芯的容器部分相对于空气流动的方向设置在空气混合门的枢转端的相邻位置。

    Biaxially drawn polyhexamethylene adipamide film
    6.
    发明授权
    Biaxially drawn polyhexamethylene adipamide film 失效
    双轴拉伸聚己二酰己二胺膜

    公开(公告)号:US4252966A

    公开(公告)日:1981-02-24

    申请号:US956267

    申请日:1978-10-31

    摘要: Disclosed is a biaxially drawn polyhexamethylene adipamide film having a relative viscosity of at least 3.2 as measured at 25.degree. C. in aqueous 96% H.sub.2 SO.sub.4, a degree of crystallinity of from 35% to 45%, a birefringence (.DELTA.n) of not more than 0.006, as determined at any point in its entire area, and an initial modulus of elasticity in tension of at least 230 kg/mm.sup.2 as determined in any direction across substantially its entire area. The film may be produced by a process wherein molten polyhexamethylene adipamide is extruded through a circular die gap and the tubular extrudate is brought in sliding contact with the outer periphery of an inside mandrel, thereby to be cooled, which process is characterized in that polyhexamethylene adipamide having a relative viscosity of from 3.3 to 5.0, as measured at 25.degree. C. in aqueous 96% H.sub.2 SO.sub.4, is used; the tubular extrudate formed therefrom is cooled at a cooling rate (X.degree. C./sec.) satisfying the following formula with respect to the relative viscosity of the polymer used,-100.times..eta.rel+1,200

    摘要翻译: 公开了一种双轴拉伸的聚己二酰己二胺聚酰胺薄膜,其在25℃,96%H 2 SO 4水溶液中的相对粘度至少为3.2,结晶度为35%至45%,双折射(DELTA n)不超过 大于0.006,如在其整个区域中的任何点所确定的,并且在基本上其整个区域上的任何方向上确定的至少230kg / mm 2的初始弹性弹性模量为至少230kg / mm 2。 该膜可以通过其中熔融聚己二酰己二胺通过圆形模头间隙挤出并且管状挤出物与内芯轴的外周滑动接触从而被冷却的方法制备,该方法的特征在于聚己二酰己二胺 使用在25℃在96%H 2 SO 4水溶液中测得的相对粘度为3.3至5.0的相对粘度; 由此形成的管状挤出物以相对于所使用的聚合物的相对粘度满足下列公式的冷却速度(X℃/秒)冷却,-100x eta rel + 1,200