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    SEPARATION MEMBRANE, METHOD FOR PREPARING THE SAME AND UNIT FOR PURIFICATION
    2.
    发明申请
    SEPARATION MEMBRANE, METHOD FOR PREPARING THE SAME AND UNIT FOR PURIFICATION 有权
    分离膜，其制备方法和用于纯化的单元

    公开(公告)号：US20150165385A1

    公开(公告)日：2015-06-18

    申请号：US14415625

    申请日：2013-09-27

    申请人： LG ELECTRONICS INC.

    发明人： Byungsoo Oh ,  Jeongil Kye ,  Minjoung Kim

    IPC分类号： B01D71/02 ,  B01D71/38 ,  F24F6/00 ,  B01D67/00

    CPC分类号： B01D71/024 ,  B01D67/0002 ,  B01D67/0088 ,  B01D69/12 ,  B01D71/021 ,  B01D71/38 ,  B01D2323/02 ,  B01D2325/38 ,  B01F3/04 ,  F24F6/00 ,  F24F6/14 ,  F24F2003/1435 ,  Y02B30/545

    摘要： A separation membrane for removing contaminants comprises: a hydrophobic membrane; and a graphene oxide layer formed to cover the hydrophobic membrane partially or wholly, wherein one surface of the hydrophobic membrane facing the graphene oxide layer has been hydrophilic-processed. The separation membrane is capable of enhancing removal efficiency on volatile contaminants, while maintaining a performance of the conventional separation membrane. The separation membrane is useful as a separation membrane for water treatment. Further, the separation membrane may be comprised in a membrane distillation apparatus, or may be utilized as a filter of a humidifier or a water purifier.

    摘要翻译： 用于去除污染物的分离膜包括：疏水膜; 以及形成为部分或全部覆盖疏水膜的石墨烯氧化物层，其中面向石墨烯氧化物层的疏水膜的一个表面已经被亲水处理。 分离膜能够提高挥发性污染物的去除效率，同时保持常规分离膜的性能。 分离膜可用作水处理用分离膜。 此外，分离膜可以包含在膜蒸馏装置中，或者可以用作加湿器或净水器的过滤器。

    Surface-modified separation membrane and method for modifying surface of separation membrane
    3.
    发明授权
    Surface-modified separation membrane and method for modifying surface of separation membrane 有权

    公开(公告)号：US10207228B2

    公开(公告)日：2019-02-19

    申请号：US14911415

    申请日：2014-10-01

    申请人： LG ELECTRONICS INC. ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY

    发明人： Changho Lee ,  Hyowon Kim ,  Jeongil Kye ,  Hobum Park

    IPC分类号： B01D65/08 ,  B01D67/00

    摘要： A surface-modified separation membrane of the present invention comprises a separation membrane, and a coating layer formed on the surface of the separation membrane for improving the contamination resistance and chemical resistance of the separation membrane, wherein the coating layer is implemented with a nanoscale thickness of the coating layer in order to inhibit a decrease in permeation flux of the separation membrane before and after coating the coating layer, and comprises: dopamine for providing, to the coating layer, an adsorption force to be bound stably with the separation membrane; and a hydrophilic material which is bound to the dopamine through secondary bonding or cross-linking containing a hydrogen bond in order to inhibit the deterioration of the durability of the coating layer, and provides hydrophilicity to the surface of the separation membrane in order to protect the separation membrane from hydrophobic contaminants. A method for modifying the surface of a separation membrane of the present invention comprises the steps of: injecting a separation membrane to be surface-modified into a reactor; adding a mixture solution, which is formed by adding a hydrophilic material to a Tris-buffer solution having an adjusted pH range at which dopamine reacts and stirring the same, to the reactor; adding dopamine and an initiator, which induces the cross-linking of the hydrophilic material and dopamine, to the reactor at a predetermined temperature range; and forming a coating layer comprising dopamine and the hydrophilic material on the separation membrane through thermal cross-linking at the predetermined temperature range while injecting oxygen into the reactor.