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    • 1. 发明申请
    • LAMINAR STRUCTURE AND A PRODUCTION METHOD FOR SAME
    • 层压结构及其生产方法
    • US20140120457A1
    • 2014-05-01
    • US14124702
    • 2012-06-08
    • Han Shin ChoiHye Sook Joo
    • Han Shin ChoiHye Sook Joo
    • H01M4/88
    • H01M4/8832H01M8/1004H01M2008/1095Y02E60/521Y02P70/56
    • The present invention relates to a laminar structure which is used in a microporous layer, an electrode layer or the like of a membrane electrode assembly for a fuel cell, and also relates to a production method for same. The laminar structure is a laminar structure which is comprised in the membrane electrode assembly (MEA) of a polymer electrolyte membrane fuel cell (PEMFC), and comprises an electrosprayed layer which is formed by the lamination of electrospraying ink, that has been charged by means of an electric field, through an electrospraying process in which the electrospraying ink is dispersed and sprayed as electrospraying liquid droplets, and, in the electrospraying process, the electrospraying substance transmission mode is set in accordance with the adjustment of electrospraying process variables. When the present invention is employed, an optimal substance transmission route is formed and three dimensional structure control is allowed through the electrospraying process and/or an inkjet printing process, and thus it is possible to simultaneously ensure economic advantages and durability when producing a laminated structure which is used in a microporous layer, an electrode layer, or the like of a membrane electrode assembly for a fuel cell.
    • 本发明涉及一种用于燃料电池用膜电极接合体的微孔层,电极层等的层叠结构体及其制造方法。 层状结构是包含在聚合物电解质膜燃料电池(PEMFC)的膜电极组件(MEA)中的层状结构,并且包括通过层压电喷雾油墨而形成的电喷雾层,其通过装置 通过电喷雾处理,其中电喷雾油墨作为电喷雾液滴分散和喷雾,并且在电喷雾过程中,电喷雾物质传输模式根据电喷雾过程变量的调整而设定。 当采用本发明时,形成最佳的物质传输路径,并且通过电喷雾处理和/或喷墨印刷工艺可以进行三维结构控制,从而可以在制造层压结构时同时确保经济优点和耐久性 其用于燃料电池的膜电极组件的微孔层,电极层等中。
    • 3. 发明申请
    • PROCESS FOR PRODUCING CELLULOSE MULTI-FILAMENT WITH LOWER COEFFICIENT OF VARIATION OF SECTION DIAMETER
    • 用于生产具有较小系数变化的纤维素多层纤维的方法
    • US20110003148A1
    • 2011-01-06
    • US12521362
    • 2007-12-10
    • Tae Jung LeeJae Shin ChoiByoung Min Lee
    • Tae Jung LeeJae Shin ChoiByoung Min Lee
    • D02G3/48D01D5/38
    • D01F2/00Y10T428/2913
    • The present invention relates to a cellulose fiber having a highly homogeneous section, particularly to a cellulose fiber with lower Coefficient of Variation of section diameter (CV(%)). Specifically, the present invention relates to a cellulose fiber wherein Coefficient of Variation of section diameter (CV(%)) of a mono-filament constituting a multi-filament prepared by dissolving a cellulose powder in liquid N-methylmorpholine N-oxide (hereinafter referred to “NMMO”) is below 2.5. According to the present invention, a lyocell multi-filament is produced comprising the steps of (i) preparing a spinning solution by homogeneously dispersing, swelling and dissolving cellulose powder in a NMMO solution; (ii) spinning the spinning solution into an air gap through a spinning nozzle; and (iii) coagulating the extruded-spun spinning solution in a coagulation bath. In particular, the coagulating step is adjusted by means of a coagulation coefficient in the range of 0.8 to 1.3 and the coagulation coefficient is expressed as TD/TC, TD=TD+TA 90 and TD TA and Tc mean the temperature of a spinning solution, the temperature of cooling air applied in an air gap and the temperature of a coagulation bath, respectively.
    • 本发明涉及具有高度均匀截面的纤维素纤维,特别涉及具有较低的截面直径变化系数(CV(%))的纤维素纤维。 具体地说,本发明涉及一种纤维素纤维,其中纤维素粉末溶解在液体N-甲基吗啉N-氧化物(以下简称为)中制成的构成多丝的单丝的截面直径变化系数(CV(%)) 到“NMMO”)低于2.5。 根据本发明,制备了莱赛尔复丝,其包括以下步骤:(i)通过将纤维素粉末均匀分散,溶胀和溶解在NMMO溶液中制备纺丝溶液; (ii)通过纺丝喷嘴将纺丝溶液纺丝到气隙中; 和(iii)在凝固浴中使挤出纺丝的纺丝溶液凝结。 特别地,通过凝固系数在0.8〜1.3的范围内调整凝固步骤,凝固系数表示为TD / TC,TD = TD + TA 90,TD TA和Tc表示纺丝溶液的温度 ,分别在空气间隙中施加的冷却空气的温度和凝固浴的温度。