Battery separators
    1.
    发明授权
    Battery separators 失效
    电池分离器

    公开(公告)号:US5318866A

    公开(公告)日:1994-06-07

    申请号:US52250

    申请日:1993-04-23

    摘要: A battery separator comprising an ultra-high molecular weight polyethylene microporous membrane radiation grafted with a monomer, the separator having the following properties:(a) a porosity ranging from about 50% to about 95%,(b) an average pore size ranging from about 0.1 to about 20 microns,(c) an electrolytic resistance ranging from about 1 to about 50 m.OMEGA.-in.sup.2,(d) a maximum weight loss of 1% and a change in electrolytic resistance of no greater than 25% after immersion in an aqueous solution of 35% KOH and 5% KMnO.sub.4 at 50.degree. C. for 1 hour,(e) a tensile strength of from about 3.5 to about 5.5 lb/in in both length and width directions,(f) a KOH absorption ratio of from about 5 to about 30,(g) a Gurley air permeability of about 1 to 300 sec/10 ml, and(h) a thickness from about 0.5 mil to about 10 mil.Further provided is a battery comprising at least one pair of electrodes of opposite polarity, an electrolyte, and a separator of the present invention located between the electrodes of opposite polarity.

    摘要翻译: 一种电池隔板,包括用单体接枝的超高分子量聚乙烯微孔膜,所述隔膜具有以下特性:(a)孔隙率为约50%至约95%,(b)平均孔径范围为 约0.1至约20微米,(c)约1至约50μm的OMEGA-2的电解电阻,(d)浸渍后的最大重量损失1%和电解电阻变化不大于25% 在50℃下,35%KOH和5%KMnO 4的水溶液1小时,(e)在长度和宽度方向上的拉伸强度为约3.5至约5.5磅/英寸,(f)KOH吸收比 为约5至约30,(g)约1至300秒/ 10毫升的格利透气度,和(h)约0.5密耳至约10密耳的厚度。 还提供了一种电池,其包括位于相反极性的电极之间的至少一对相反极性的电极,电解质和隔板。

    Battery separators
    2.
    发明授权
    Battery separators 失效
    电池分离器

    公开(公告)号:US5492781A

    公开(公告)日:1996-02-20

    申请号:US182718

    申请日:1994-01-18

    IPC分类号: D04H13/00 H01M2/16

    摘要: The present invention provides a battery separator comprising a nonwoven electrolyte reservoir layer bonded to a nonwoven support layer. The support layer comprises fibers having a mean diameter greater than about 15 microns, and preferably has been calendared to a thickness of less than about 10 mils, with a thickness variability of no more than about 10%. The electrolyte reservoir layer comprises fibers having a mean diameter of about 10 microns or less, and a thickness of less than about 15 mils, and preferably is melt-blown directly onto the support layer. The nonwoven fibers that comprise the electrolyte reservoir layer and the support layer are selected from the group consisting of polyethylene, polypropylene, polymethylpentene, and combinations thereof. The present invention also provides a battery containing such a battery separator, as well as a method of preparing such a battery separator.

    摘要翻译: 本发明提供了一种电池隔板,其包括结合到非织造支撑层的非织造电解质储存层。 支撑层包括具有大于约15微米的平均直径的纤维,并且优选地已经压延至小于约10密耳的厚度,其厚度可变性不超过约10%。 电解质储存层包括平均直径为约10微米或更小,厚度小于约15密耳的纤维,并且优选地直接熔喷到载体层上。 包含电解质储存层和支撑层的非织造纤维选自聚乙烯,聚丙烯,聚甲基戊烯及其组合。 本发明还提供一种含有这种电池隔板的电池,以及制备这种电池隔板的方法。

    Manufacturing method for producing sterile milk using dynamic
microfiltration
    4.
    发明授权
    Manufacturing method for producing sterile milk using dynamic microfiltration 失效
    使用动态微量滤液生产无菌牛奶的制造方法

    公开(公告)号:US5356651A

    公开(公告)日:1994-10-18

    申请号:US998371

    申请日:1992-12-30

    摘要: A method for treating raw milk to produce treated milk having a lower bacterial content than the raw milk. The milk is homogenized and, within about 5 minutes from the homogenization, subjected to dynamic microfiltration, to yield a filtrate which has a lower bacterial content than the initial raw milk. When the flow rate of milk through the microfilter drops below a predetermined level, the dynamic microfilter is removed from milk filtration service, flushed with water, and returned to milk filtration service, the steps being repeated as necessary until the membrane cannot be rejuvenated to a minimum filtration capacity, at which time the membrane is subjected to chemical cleaning to essentially restore the original filtration capacity of the membrane.

    摘要翻译: 一种用于处理生奶以生产具有低于生奶的细菌含量较低的处理过的牛奶的方法。 将乳均匀化,在均化后约5分钟内进行动态微量过滤,得到的滤液的细菌含量低于初始生奶。 当通过微过滤器的牛奶流量下降到预定水平以下时,将动态微型过滤器从牛奶过滤服务中取出,用水冲洗,并返回到牛奶过滤服务中,根据需要重复步骤,直到膜不能复原至 最小过滤能力,此时膜经过化学清洗,基本上恢复了膜的原始过滤能力。

    Method of making a supported microporous membrane
    8.
    发明授权
    Method of making a supported microporous membrane 失效
    制备负载微孔膜的方法

    公开(公告)号:US4826642A

    公开(公告)日:1989-05-02

    申请号:US203821

    申请日:1988-06-08

    IPC分类号: A41D31/02 B01D69/10 B01D13/04

    摘要: A supported microporous membrane comprising a composite of a microporous membrane and a synthetic thermoplastic web of microfibers secured to the membrane without the use of added adhesive components and having an ASTM D903 peel strength of at least about 2 grams per centimeter, the composite having a modulus of flexure at leasts 10 percent greater than that of the membrane, and the method of manufacturing such supported membranes by contacting thermplastic microfibers with the membrane while the microfibers are at an elevated temperature.

    摘要翻译: 支撑的微多孔膜,其包括微孔膜和合成的纤维的合成热塑性纤维网的复合材料,其固定到膜上,而不使用添加的粘合剂组分,并且具有至少约2克/厘米的ASTM D903剥离强度,所述复合材料具有模量 的挠曲比膜的至少10%,以及当微纤维处于升高的温度时通过使热塑性微纤维与膜接触来制造这种支撑膜的方法。

    Fibrous structure and method of manufacture
    9.
    发明授权
    Fibrous structure and method of manufacture 失效
    纤维结构和制造方法

    公开(公告)号:US4702947A

    公开(公告)日:1987-10-27

    申请号:US846803

    申请日:1986-04-01

    IPC分类号: D04H1/56 D04H1/64 B32B27/00

    摘要: Polymeric microfibrous structures comprised of normally hydrophobic microfibers coated with a cured, precipitated, cationic, thermosetting binder resin or polymer and characterized by being hydrophilic and having a positive zeta potential with enhanced capability for the removal of negatively-charged particulate material in a fluid medium are prepared by a process comprising the steps:(1) combining in a controlled manner a first solution of a water-soluble, non-colloidal, cationic, thermosetting binder resin or polymer and a second solution or dispersion of a precipitating agent to form a stable emulsion or suspension;(2) impregnating the microfibrous structure of normally hydrophobic microfibers with the stable emulsion or suspension to form a fibrous structure wetted with the stable emulsion or suspension; and(3) drying the wetted microfibrous structure and curing the binder resin or polymer.

    摘要翻译: 聚合物微纤维结构包括用固化,沉淀,阳离子,热固性粘合剂树脂或聚合物涂覆的通常疏水的微纤维,其特征在于亲水性并具有增强的在流体介质中去除带负电荷的颗粒材料的能力的正ζ电位, 通过包括以下步骤的方法制备:(1)以受控的方式组合水溶性非胶体阳离子热固性粘合剂树脂或聚合物的第一溶液和沉淀剂的第二溶液或分散体以形成稳定的 乳液或悬浮液; (2)用稳定的乳液或悬浮液浸渍通常疏水的微纤维的微纤维结构,以形成用稳定的乳液或悬浮液润湿的纤维结构; 和(3)干燥湿润的微纤维结构并固化粘合剂树脂或聚合物。

    Dispersion system and method
    10.
    发明授权
    Dispersion system and method 失效
    分散系统和方法

    公开(公告)号:US4534388A

    公开(公告)日:1985-08-13

    申请号:US501889

    申请日:1983-06-07

    摘要: A self-cleaning system and method for dispersing aggregates in a fluid medium is provided. The system is comprised of first and second members operatively associated to form an internal chamber and having an inlet to the chamber for admitting the fluid to be treated. At least one of the members is biased toward the other whereby the introduction of a fluid medium to be treated into the chamber under an operating pressure in the range of from about 50 to about 1,000 psid (3.5 to 70.3 kg/cm.sup.2) provides an elongated orifice between the first and second members having a transverse dimension or width of from about 1 to about 1,500 micrometers for egress of the fluid medium. As the fluid passes through the elongated orifice, aggregates contained therein are dispersed. The system is self-cleaning by virtue of the biased nature of at least one of the members toward the other, thereby providing longer onstream operation and requiring less servicing. The system can be used for treating aggregate-containing fluids such as oil well completion fluids, dispersions used in the manufacture of magnetic tape, and dispersion of particulates such as carbon black and other pigments.

    摘要翻译: 提供了一种用于将聚集体分散在流体介质中的自清洁系统和方法。 该系统包括第一和第二构件,第一和第二构件可操作地相关联以形成内部腔室并且具有用于容纳被处理流体的腔室的入口。 至少一个构件偏向另一个,由此在约50至约1,000psid(3.5至70.3kg / cm 2)的操作压力下将待处理的流体介质引入室中,提供细长的 在第一和第二构件之间的孔口具有约1至约1,500微米的横向尺寸或宽度,用于流体介质的流出。 当流体通过细长的孔口时,其中包含的聚集体被分散。 该系统由于至少一个构件朝向另一个的偏压性质而自行清洁,从而提供更长的上游操作并且需要较少的维修。 该系统可用于处理含石油的流体,例如油井完井液,用于制造磁带的分散体,以及诸如炭黑和其它颜料的颗粒分散体。