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22 条记录 (耗时 0.014 秒)

    Manufacturing ultramicrocellular polymer foams at low pressure
    1.
    发明授权
    Manufacturing ultramicrocellular polymer foams at low pressure 失效
    在低压下制造超细胞聚合物泡沫

    公开(公告)号：US5955511A

    公开(公告)日：1999-09-21

    申请号：US144115

    申请日：1998-08-31

    申请人： Y. Paul Handa ,  Zhiyi Zhang

    发明人： Y. Paul Handa ,  Zhiyi Zhang

    IPC分类号： C08J9/12 ,  C08J9/00

    CPC分类号： C08J9/12

    摘要： The invention disclosed provides a method for producing ultramicrocellular polymer foams at low pressures. A polymer is saturated with a blowing agent at low temperatures and pressures within a short time period, due to retrograde vitrification. The blowing agent may be in the form of a gas or a volatile liquid. Polymer-blowing agent combinations are selected to provide a processing temperature/pressure in the area below the positive slope portion of the retrograde vitrification profile of the glass transition temperature of the polymer versus pressure. The polymer thus saturated has an exceptionally high blowing agent content, and is then foamed to produce materials with small cells and high cell density.

    摘要翻译： 所公开的发明提供了一种在低压下生产超细胞聚合物泡沫的方法。 由于逆向玻璃化，聚合物在短时间内在低温和低压下被发泡剂饱和。 发泡剂可以是气体或挥发性液体的形式。 选择聚合物发泡剂组合以在聚合物的玻璃化转变温度与压力的逆向玻璃化曲线的正斜坡部分下方的区域中提供加工温度/压力。 因此饱和的聚合物具有非常高的发泡剂含量，然后发泡以产生具有小电池和高电池密度的材料。

    Manufacturing foams by stress-induced nucleation
    2.
    发明授权
    Manufacturing foams by stress-induced nucleation 失效

    公开(公告)号：US6080798A

    公开(公告)日：2000-06-27

    申请号：US161448

    申请日：1998-09-28

    申请人： Paul Handa ,  Zhiyi Zhang

    发明人： Paul Handa ,  Zhiyi Zhang

    IPC分类号： B29C44/04 ,  B29C44/34 ,  C08J9/14 ,  C08J9/36 ,  C08J9/00

    CPC分类号： C08J9/14 ,  B29C44/04 ,  B29C44/3453 ,  B29C44/3476 ,  C08J9/36

    摘要： The invention disclosed provides a method for inducing nucleation in a polymer by subjecting the polymer containing dissolved gas to an external stress generated, for example, by applying hydrostatic or mechanical pressure. The applied stress restricts the bubble growth so that the foamed materials have small cells and high cell density. Such microcellular foams can be produced over a wide low temperature range, i.e. from the temperature at which the polymer is conditioned with the blowing agent up to about the glass transition temperature of the polymer-blowing agent system. Stress induced nucleation can also be conducted at higher temperatures i.e. up to about the T.sub.g of the neat polymer, leading to foams with larger cells. A variety of homogeneous and heterogeneous foams can be produced by this technique.

    Multilayered polymers and foams with variable sized interlayer gaps
    3.
    发明授权
    Multilayered polymers and foams with variable sized interlayer gaps 失效
    多层聚合物和具有可变尺寸夹层间隙的泡沫体

    公开(公告)号：US06402865B1

    公开(公告)日：2002-06-11

    申请号：US09351000

    申请日：1999-07-12

    申请人： Paul Handa ,  Zhiyi Zhang

    发明人： Paul Handa ,  Zhiyi Zhang

    IPC分类号： B32B3114

    CPC分类号： B29C44/3453 ,  B29C44/06 ,  B32B5/18 ,  C08J5/00 ,  C08J9/122 ,  C08J2201/032 ,  C08J2203/06

    摘要： The invention disclosed provides integral multilayered polymers with variable interlayer gaps, and processes for their manufacture. The materials thus produced consist of many layers of a polymeric material, which may be a single polymer or a blend of compatible polymers, separated by discontinuous narrow gaps containing air and/or a blowing agent. The layer density can be controlled within a wide range, typically 10 to 2000 layers/mm, while the gap width between the layers can be controlled either to ≦100 nanometers (called nanolayered polymers) or ≧1 micrometer (called microlayered polymers), depending on the process. These layered materials are mechanically strong and have excellent thermal and electrical, and sound insulation properties. Two distinct mechanisms were developed for producing such materials. A first process produces nanolayered polymers and involves first introducing a low degree of entanglement among some of the polymer chains and then breaking apart these entanglements using a blowing agent. The microlayer process involves the use of stress-induced nucleation to uniformly grow cells in the polymer containing dissolved blowing agent and force the cells to grow in a preferential direction.

    摘要翻译： 所公开的发明提供了具有可变夹层间隙的整体多层聚合物及其制造方法。 如此制备的材料由多层聚合物材料组成，其可以是单一聚合物或相容性聚合物的共混物，其通过包含空气和/或发泡剂的不连续窄间隙分离。 层密度可以控制在宽范围内，通常为10至2000层/ mm，而层之间的间隙宽度可以控制在<= 100纳米（称为纳米级聚合物）或> = 1微米（称为微层聚合物） ，取决于过程。 这些层状材料具有机械强度并且具有优异的热和电和隔音性能。 开发了用于生产这种材料的两种不同的机制。 第一种方法产生纳米级聚合物，并且首先引入一些聚合物链之间的低度缠结，然后使用发泡剂分离这些缠结。 微层方法涉及使用应力诱导的成核以均匀地生长含有溶解的发泡剂的聚合物中的细胞，并迫使细胞以优先的方向生长。

    Manufacturing foams by stress-induced nucleation
    4.
    发明授权
    Manufacturing foams by stress-induced nucleation 失效
    通过应力诱导成核制造泡沫

    公开(公告)号：US06391934B1

    公开(公告)日：2002-05-21

    申请号：US09458983

    申请日：1999-12-10

    申请人： Paul Handa ,  Zhiyi Zhang

    发明人： Paul Handa ,  Zhiyi Zhang

    IPC分类号： C08J900

    CPC分类号： C08J9/14 ,  B29C44/04 ,  B29C44/3453 ,  B29C44/3476 ,  C08J9/36

    摘要： The invention disclosed provides a method for inducing nucleation in a polymer by subjecting the polymer containing dissolved gas to an external stress generated, for example, by applying hydrostatic or mechanical pressure. The applied stress restricts the bubble growth so that the foamed materials have small cells and high cell density. Such microcellular foams can be produced over a wide low temperature range, i.e. from the temperature at which the polymer is conditioned with the blowing agent up to about the glass transition temperature of the polymer-blowing agent system. Stress induced nucleation can also be conducted at higher temperatures i.e. up to about the Tg of the neat polymer, leading to foams with larger cells. A variety of homogeneous and heterogeneous foams can be produced by this technique.

    摘要翻译： 所公开的发明提供了一种通过使含有溶解气体的聚合物经受例如通过施加静液压或机械压力产生的外部应力来诱导聚合物成核的方法。 施加的应力限制气泡生长，使得泡沫材料具有小的细胞和高的细胞密度。 这样的微孔泡沫可以在宽的低温范围内产生，即从聚合物用发泡剂调节的温度直到聚合物发泡剂体系的玻璃化转变温度。 应力诱导的成核也可以在更高的温度下进行，即高达约纯聚合物的Tg，导致具有较大电池的泡沫。 通过这种技术可以生产各种均质和异质泡沫。

    INKJET PRINTING PAPER
    5.
    发明申请
    INKJET PRINTING PAPER 审中-公开
    喷墨打印纸

    公开(公告)号：US20100159164A1

    公开(公告)日：2010-06-24

    申请号：US12338577

    申请日：2008-12-18

    申请人： Zhiyi Zhang ,  Angela P. Zagala

    发明人： Zhiyi Zhang ,  Angela P. Zagala

    IPC分类号： D21H19/12 ,  B05D7/04 ,  D21H19/36 ,  B32B29/06

    CPC分类号： B41M5/52 ,  B41M5/5236 ,  B41M5/5245 ,  D21H17/28 ,  D21H17/66 ,  D21H17/67 ,  D21H19/12 ,  D21H19/36 ,  D21H19/54 ,  D21H21/16 ,  D21H23/22

    摘要： The invention provides an ink jet recording sheet which is highly resistant to printings smearing, running, feathering, color bleeding, or fading when wet, humid, or exposed to intense or continual light. The recording sheet has a solid substrate and a composition coating the solid substrate. The composition comprises a cationic polymer as well as starch, inorganic salt, pigment, and water. The composition can further comprise a non-ionic polymer. The coating tightly binds both pigment based inkjet inks and dye based inkjet inks. The composition is easy to apply and the ink jet recording sheet can be easily formed with a standard size press device.

    摘要翻译： 本发明提供了一种喷墨记录纸，其在潮湿，潮湿或暴露于强烈或连续的光下时对印刷品的涂抹，运行，羽化，着色或褪色具有高度的抗性。 记录片材具有固体基质和涂覆固体基质的组合物。 该组合物包含阳离子聚合物以及淀粉，无机盐，颜料和水。 组合物还可以包含非离子聚合物。 涂层紧密地结合基于颜料的喷墨油墨和基于染料的喷墨油墨。 组合物易于涂布，并且可以用标准尺寸的压力装置容易地形成喷墨记录纸。

    SYSTEM FOR NONPARAMETRIC ENTROPY ESTIMATION
    8.
    发明申请
    SYSTEM FOR NONPARAMETRIC ENTROPY ESTIMATION 审中-公开
    非绝对熵估计系统

    公开(公告)号：US20140122550A1

    公开(公告)日：2014-05-01

    申请号：US13666515

    申请日：2012-11-01

    申请人： Zhiyi Zhang

    发明人： Zhiyi Zhang

    IPC分类号： G06F17/16

    CPC分类号： G06F17/18

    摘要： The claimed invention discloses method, systems, and computer program products for providing nonparametric entropy estimation. The method comprises receiving a sample having a sample size of two or more symbols; calculating a number of distinct symbols in the sample, where the sample has one or more distinct symbols; calculating a relative frequency for each of the one or more distinct symbols; calculating, for a plurality of pairs having a first and second value, a set of numerical terms for each pair; calculating, based on the plurality of pairs and sets of numerical terms, one or more values for a first and second matrix; calculating, based on the first and second matrices, a plurality of vector components for a first, second, and third vector; and calculating an entropy estimation based at least partially on the one or more components in the third vector.

    摘要翻译： 所要求保护的发明公开了用于提供非参数熵估计的方法，系统和计算机程序产品。 该方法包括接收具有两个或多个符号的样本大小的样本; 计算样本中不同符号的数量，其中样本具有一个或多个不同符号; 计算所述一个或多个不同符号中的每一个的相对频率; 对于具有第一和第二值的多对对于每对的一组数值计算; 基于所述多个对和数字项集合，计算第一和第二矩阵的一个或多个值; 基于第一和第二矩阵计算第一，第二和第三向量的多个向量分量; 以及至少部分地基于所述第三矢量中的所述一个或多个分量来计算熵估计。

    Generic, accurate, and real time borehole correction for resistivity tools
    10.
    发明授权
    Generic, accurate, and real time borehole correction for resistivity tools 有权
    通用，准确，实时的井眼修正电阻率工具

    公开(公告)号：US06381542B1

    公开(公告)日：2002-04-30

    申请号：US09543727

    申请日：2000-04-05

    申请人： Zhiyi Zhang ,  Alberto G. Mezzatesta

    发明人： Zhiyi Zhang ,  Alberto G. Mezzatesta

    IPC分类号： G01V318

    CPC分类号： G01V3/28 ,  G01V3/38

    摘要： A Neural Net (NN) is trained, validated and used for borehole correction of resistivity logging data. In the training stage, the entire range of possibilities of earth models relevant to borehole compensation is sampled and a suite of tool responses is generated, with and without the borehole and the NN is trained to produce the corresponding borehole-free response. In the validation stage, the input to the NN comprises tool responses that were not used in the training of the NN and validation is based upon comparing the output of the NN to the corresponding borehole-free response. If the agreement is not good, then the NN is retrained with a different sampling of the earth model. The validated NN is then used to correct the borehole measurements. The borehole corrected measurements may be inverted using an additional neural net designed for the purpose.

    摘要翻译： 神经网络（NN）被训练，验证并用于电阻率测井数据的钻孔校正。 在训练阶段，对与井眼补偿相关的地球模型的全部可能性进行了采样，并产生了一套工具响应，无论是否有钻孔，NN都经过训练，以产生相应的无钻孔响应。 在验证阶段，NN的输入包括在NN的训练中没有使用的工具响应，验证是基于将NN的输出与相应的无钻孔响应进行比较。 如果协议不好，那么NN将用不同的地球模型取样来重新训练NN。 然后使用经验证的NN来校正钻孔测量。 可以使用为此目的设计的附加神经网络来反转钻孔校正的测量结果。