Thermal analysis instrument
    11.
    发明授权
    Thermal analysis instrument 失效
    热分析仪

    公开(公告)号:US5599104A

    公开(公告)日:1997-02-04

    申请号:US311739

    申请日:1994-09-23

    IPC分类号: G01N25/20 G01N25/48 G01N25/00

    CPC分类号: G01N25/4866 G01N25/4833

    摘要: The temperature of a heat reservoir is varied according to a linear function which is AC modulated. At this time, the temperature difference between two points located in a heat flow path going from the heat reservoir to an unknown sample is measured. Also, the temperature difference between two points located in a heat flow path going from the heat reservoir to a reference sample is measured. These two pairs of points are arranged symmetrically. Then, the resulting signals are demodulated, and each signal is divided into an AC component and a low-frequency component. Using these signals, the DSC signal is separated into a heat capacity component and a latent heat component.

    摘要翻译: 蓄热器的温度根据交流调制的线性函数而变化。 此时,测量位于从储热器到未知样品的热流路中的两点之间的温差。 此外,测量位于从储热器到参考样品的热流路中的两点之间的温度差。 这两对点对称布置。 然后,对所得到的信号进行解调,并将每个信号分成AC分量和低频分量。 使用这些信号,将DSC信号分离成热容量成分和潜热成分。

    Method for stable rapid spinning of a polybenzoxazole or
polybenzothiazole fiber
    12.
    发明授权
    Method for stable rapid spinning of a polybenzoxazole or polybenzothiazole fiber 失效
    稳定快速纺丝聚苯并恶唑或聚苯并噻唑纤维的方法

    公开(公告)号:US5385702A

    公开(公告)日:1995-01-31

    申请号:US207989

    申请日:1994-03-08

    CPC分类号: D01F6/74

    摘要: Polybenzoxazole or polybenzothiazole polymer dopes are spun through a spinneret having an orifice density of more than 0.25 per cm.sup.2 to form filaments. The filaments formed then pass through an air gap which has a gas flowing into it at a temperature of between about 5.degree. C. to about 100.degree. C. and at a flow rate between about 0.1 meters/second and about 2.0 meters/second. The filaments cool in the air gap and are then coagulated. During or after coagulation the filaments are combined into one or more fibers. By this method of controlling the temperature in the air gap it is possible to stably spin polybenzoxazole or polybenzothiazole fibers at relatively high final line speeds.

    摘要翻译: 聚苯并恶唑或聚苯并噻唑聚合物掺杂物通过孔密度大于0.25 / cm2的喷丝头纺丝以形成长丝。 所形成的长丝然后通过气流,气隙在大约5℃至大约100℃的温度和约0.1米/秒到约2.0米/秒之间的流速下流入其中。 细丝在气隙中冷却,然后凝结。 在凝结期间或之后,将细丝组合成一根或多根纤维。 通过这种控制气隙温度的方法,可以以相对较高的最终线速度稳定地旋转聚苯并恶唑或聚苯并噻唑纤维。

    Process for producing polyester fibers
    14.
    发明授权
    Process for producing polyester fibers 失效
    生产聚酯纤维的方法

    公开(公告)号:US4923662A

    公开(公告)日:1990-05-08

    申请号:US287082

    申请日:1988-12-21

    CPC分类号: D01F6/62 D01D5/0885 D01D5/16

    摘要: A process for producing polyester fibers having excellent tensile properties, particularly suitable as reinforcement material for tires, belts, etc., involves melt-spinning an ethylene terephthalate polyester to form highly oriented low crystalline polyester filaments which, at the state of being taken-up and prior to being drawn, having birefringence (.DELTA.n) and specific gravity (SG) within the below indicated ranges (a) and (b), and then, without winding-up, subjecting the said filaments immediately to drawing and heat treatment between the first godet rolls and second godet rolls under a draw ratio (DR) defined by the following formulas:.DELTA.n.gtoreq.5SG-6.64 (a).DELTA.n.gtoreq.0.100 (b)2.0.gtoreq.DR>1.0 (c)

    摘要翻译: 特别适用于轮胎,带等的增强材料的具有优异拉伸性能的聚酯纤维的制造方法包括将对苯二甲酸乙二醇酯聚酯熔融纺丝以形成高取向的低结晶聚酯长丝,其在被卷取的状态 并且在拉伸之前,在以下的范围(a)和(b)中具有双折射(DELTA n)和比重(SG)),然后在没有卷绕的情况下,立即对所述细丝进行拉伸和热处理 在由下式定义的拉伸比(DR)下的第一导丝辊辊和第二导丝辊:DELTA n> / = 5SG-6.64(a)Δ= 0.100(b)2.0> / = DR> 1.0(c )

    Sealed sample capsule used for thermal analyzer
    15.
    发明授权
    Sealed sample capsule used for thermal analyzer 失效
    用于热分析仪的密封样品胶囊

    公开(公告)号:US4159057A

    公开(公告)日:1979-06-26

    申请号:US852550

    申请日:1977-11-17

    CPC分类号: G01N25/486

    摘要: A sealed sample capsule for thermal analyzers comprises a vessel and a plug. Sample material to be analyzed is packed in the vessel, the plug is next pushed in upon the material and the upper end portion of the vessel is pressed inwardly to hold the plug in place sealing the capsule. The capsule has a remarkably high capacity to bear internal pressure and can be made of steel or iron which is not affected by such active material as mercury or gallium.

    摘要翻译: 用于热分析器的密封样品盒包括容器和塞子。 要分析的样品材料被包装在容器中,然后将塞子推入材料上,并且将容器的上端部分向内压入以将塞子保持在适当位置以密封胶囊。 胶囊具有非常高的承受内部压力的能力,并且可以由钢或铁制成,其不受诸如汞或镓的活性物质的影响。

    Polybenzazole fiber and pyridobisimidazole fiber
    16.
    发明授权
    Polybenzazole fiber and pyridobisimidazole fiber 失效
    聚吲哚纤维和吡啶并咪唑纤维

    公开(公告)号:US08580380B2

    公开(公告)日:2013-11-12

    申请号:US12438230

    申请日:2007-08-22

    IPC分类号: B32B19/00 B32B7/02 C08G73/06

    CPC分类号: D01F6/74 D01D5/06

    摘要: To provide fibers which retain the excellent heat resistance and flame retardancy inherent in polybenzazole fibers and pyridobisimidazole fibers, have improved post-processability and neither necessitate considerable change in production process conditions nor require a high-temperature and long-time heating treatment. With respect to the polybenzazole fiber and pyridobisimidazole fiber, in an electron diffraction diagram of a surface layer part (from the surface to 1 μm) of the fibers, the fibers containing a crystal present in a state satisfying that S2/S1 is in a prescribed range, wherein S1 is a diffraction peak area derived from a crystal (200) plane and S2 is a diffraction peak area derived from a plurality of other crystal planes along an equatorial direction profile.

    摘要翻译: 为了提供保持聚吲哚纤维和吡啶并咪唑纤维中固有的优异耐热性和阻燃性的纤维,具有改进的后加工性,并且不需要生产工艺条件的相当大的改变,也不需要高温和长时间的加热处理。 关于聚吲哚纤维和吡啶并咪唑纤维,在纤维表面层部分(从表面到1um)的电子衍射图中,含有以满足S2 / S1的状态存在的晶体的纤维处于规定的 范围,其中S1是衍生自晶体(200)面的衍射峰面积,S2是沿着赤道方向轮廓从多个其它晶面衍生的衍射峰面积。

    Differential Scanning Calorimeter
    17.
    发明申请
    Differential Scanning Calorimeter 有权
    差示扫描量热仪

    公开(公告)号:US20080151962A1

    公开(公告)日:2008-06-26

    申请号:US11961944

    申请日:2007-12-20

    IPC分类号: G01K17/08 G01N25/00

    CPC分类号: G01N25/20

    摘要: There is provided a differential scanning calorimeter for exactly measuring a calorie variation of the measured sample on the basis of the temperature difference between sample container and the reference container without the influence of the heat irregularity incoming from the surroundings and the noise components. The differential scanning calorimeter includes a heating furnace of an approximately H-shaped section having an approximately drum-shaped wall part and an approximately plate-shaped heat inflow part, a heater disposed outside the wall part so as to heat the heating furnace, a approximately bar-shaped heat-resistance member that is arranged along the center axis L of the wall part, that protrudes from both sides of the heat inflow part by an approximately equal length, that is made of a material heat conductivity lower than that of the material of the heating furnace, a sample container disposed at one end of the heat-resistance member, a reference container disposed at the other end of the heat-resistance member, and a differential heat flow detector measuring a difference between the temperature of the sample container and the temperature of the reference container as a measured value.

    摘要翻译: 提供了差示扫描量热计,用于在不受来自周围环境的热不规则性和噪声成分的影响的情况下,基于样品容器和参考容器之间的温度差来精确测量测量样品的卡路里变化。 差示扫描量热计包括具有大致H形截面的加热炉,具有近似鼓形的壁部分和近似板状的热流入部分,设置在壁部外部以加热加热炉的加热器,大致 所述棒状耐热构件沿着所述壁部的中心轴线L配置,从所述热流入部的两侧突出大致相同的长度,所述长度相当于材料的导热率低于所述材料的导热率 的加热炉,设置在耐热构件的一端的样品容器,设置在耐热构件的另一端的参考容器和测量样品容器的温度之间的差异的差示热量检测器 和参考容器的温度作为测量值。

    High-strength polyethylene fiber
    18.
    发明授权
    High-strength polyethylene fiber 有权
    高强度聚乙烯纤维

    公开(公告)号:US07056579B2

    公开(公告)日:2006-06-06

    申请号:US10486110

    申请日:2002-08-02

    IPC分类号: D01F6/00

    摘要: A high strength polyethylene filament having tenacity of at least 15 cN/dTex, which comprises a polyethylene having a weight-average molecular weight of 300,000 or less and a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or less as determined in a state of the filament, and containing 0.01 to 3.0 branched chains per 1,000 backbone carbon atoms. When cut fibers are obtained by cutting the polyethylene filament, a rate of dispersion-defective fibers is 2.0% or less.

    摘要翻译: 具有至少15cN / dTex的强度的高强度聚乙烯长丝,其包含重均分子量为300,000以下的聚乙烯和重均分子量与数均分子量的比(Mw / Mn)为4.0以下,在丝状态下测定,每1000个骨架碳原子含有0.01〜3.0个支链。 当通过切割聚乙烯长丝获得切割的纤维时,分散缺陷纤维的速率为2.0%以下。

    Method and apparatus for determining photo-chemical reaction heat
    20.
    发明授权
    Method and apparatus for determining photo-chemical reaction heat 失效
    光化学反应热测定方法和装置

    公开(公告)号:US4126032A

    公开(公告)日:1978-11-21

    申请号:US778035

    申请日:1977-03-16

    IPC分类号: G01K17/00 G01N25/48

    CPC分类号: G01N25/4866 G01K17/00

    摘要: A system for determining photo-chemical reaction heat evolved from a sample material irradiated with radiant energy comprises a calorimeter having a pair of sample holders connected to heat-leakage type thermo-electric elements which develop electric output signals proportionate to the amount of heat energy conducted therethrough. Both sample holders are initially irradiated with radiant energy before disposing the sample material thereon to heat the sample holders and thereby develop electric output reference signals. The amount of radiant energy being irradiated on at least one of the sample holders is then selectively adjusted to effectively compensate for any difference between the two reference signals. Then the sample material is mounted on at least one of the sample holders and both sample holders are irradiated with the adjusted radiant energy thereby enabling determination of the exothermic or endothermic heat value generated by the sample material due to the photo-chemical reaction heat evolved therefrom in accordance with the difference in the electric output signals developed by said thermo-electric elements.

    摘要翻译: 用于确定从辐射能量照射的样品材料放出的光化学反应热的系统包括量热计,其具有连接到热泄漏型热电元件的一对样品保持器,所述热电偶元件形成与所传导的热能量成比例的电输出信号 通过。 在将样品材料放置在其上以加热样品保持器,从而产生电输出参考信号,两个样品保持器最初被辐射能量照射。 然后选择性地调节照射在至少一个样品保持器上的辐射能量以有效地补偿两个参考信号之间的任何差异。 然后将样品材料安装在至少一个样品保持器上,并且用调节的辐射能照射两个样品保持器,从而使得能够确定由于由其产生的光化学反应热而由样品材料产生的放热或吸热热值 根据由所述热电元件产生的电输出信号的差异。