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    Hollow tubular oil absorbing material and preparing method thereof
    1.
    发明授权
    Hollow tubular oil absorbing material and preparing method thereof 有权
    中空管状吸油材料及其制备方法

    公开(公告)号：US09573113B2

    公开(公告)日：2017-02-21

    申请号：US14778102

    申请日：2014-10-28

    Applicant: TIANJIN POLYTECHNIC UNIVERSITY

    Inventor： Changfa Xiao ,  Zitao Wang ,  Jian Zhao ,  Xiao Hu ,  Qinglin Huang

    IPC: B01J20/32 ,  B01J20/02 ,  B01J20/22 ,  B01J20/28 ,  B01J20/30 ,  B01J20/26

    CPC classification number: B01J20/0262 ,  B01J20/20 ,  B01J20/22 ,  B01J20/26 ,  B01J20/28 ,  B01J20/28045 ,  B01J20/28054 ,  B01J20/30 ,  B01J20/3206 ,  B01J20/3208 ,  B01J20/3212 ,  B01J20/3234 ,  C09K3/32

    Abstract: A hollow tubular oil absorbing material includes: a core formed by a spring, and an outer shell formed by a flat sponge wrapped at the spring; wherein the flat sponge is fixed at both ends of the spring; the flat sponge fully covers all the spring or is sealed at a first end; a connecting tube is connected at a second end of the spring for communicating with a vacuum pump; a graphene oxide layer is coated at the outer sponge. The graphene oxide layer on the flat sponge of hollow tubular oil absorbing material is formed by immersion and coating under negative pressure. Further the reduction of graphene oxide is performed with hydrazine hydrate steam and followed by washing and drying. Finally, a hollow tubular oil absorbing material with a spring core and an outer grapheme-coated sponge structure is obtained, which can be applied to continuous oil-water separation.

    Abstract translation: 中空管状油吸收材料包括：由弹簧形成的芯和由弹簧包裹的扁平海绵形成的外壳; 其中所述扁平海绵被固定在所述弹簧的两端; 扁平海绵完全覆盖所有弹簧或在第一端密封; 连接管连接在弹簧的第二端，用于与真空泵连通; 在外海绵处涂覆石墨烯氧化物层。 中空管状油吸收材料的扁平海绵上的石墨烯氧化层通过在负压下浸渍和涂覆而形成。 此外，还原石墨烯氧化物是用水合肼蒸汽进行的，随后进行洗涤和干燥。 最后，获得了一种具有弹簧芯和外部刻画海绵结构的中空管状吸油材料，可以应用于连续的油水分离。

    Membrane formulation of fluorinated copolymer porous membrance and preparing method thereof
    2.
    发明申请
    Membrane formulation of fluorinated copolymer porous membrance and preparing method thereof 审中-公开
    氟化共聚物多孔膜的膜制剂及其制备方法

    公开(公告)号：US20160075845A1

    公开(公告)日：2016-03-17

    申请号：US14949889

    申请日：2015-11-24

    Applicant: TIANJIN POLYTECHNIC UNIVERSITY

    Inventor： Changfa Xiao ,  Jian Pan ,  Qinglin Huang ,  Hailiang Liu ,  Zhen Liu ,  Guolan Huan

    IPC: C08J9/12 ,  B29C43/02 ,  B29C43/52 ,  C08J9/00

    CPC classification number: B29C43/52 ,  B01D67/002 ,  B01D67/003 ,  B01D69/08 ,  B01D69/087 ,  B01D71/32 ,  B01D71/76 ,  B01D2323/18 ,  B29C43/003 ,  B29C43/02 ,  B29K2023/08 ,  B29K2105/12 ,  B29K2995/0068 ,  B29L2031/755

    Abstract: A membrane formulation of fluorinated copolymer porous membrane includes: 15-50 wt % ethylene-chlorotrifluoroethylene copolymer, 30-85 wt % diluent and 0-20 wt % composite pore-forming agent, totally 100 wt %; wherein the diluent is selected from a group consisting of di-isooctyladinpate, di-isooctyladinpate with dibutyl phthalate, diethyl phthalate and dioctyl phthalate with any proportion. Methods for preparing a fluorinated copolymer porous flat membrane and a fluorinated copolymer hollow fiber porous membrane with the above formulation are also provided. With the formulation, a membrane-forming temperature is reduced to below 200° C., and processes thereof are convenient. Furthermore, membrane mechanical property is excellent, porosity is high, permeability is sufficient, and the method is suitable for membrane separation under severe conditions such as acid-base mediums and organic solvents.

    Abstract translation: 氟化共聚物多孔膜的膜制剂包括：15-50重量％的乙烯 - 三氟氯乙烯共聚物，30-85重量％稀释剂和0-20重量％复合成孔剂，总计100重量％ 其中所述稀释剂选自由二异辛基阿魏酸，二异辛酯和邻苯二甲酸二丁酯，邻苯二甲酸二乙酯和邻苯二甲酸二辛酯以任何比例组成的组。 还提供了具有上述配方的氟化共聚物多孔平坦膜和含氟共聚物中空纤维多孔膜的制备方法。 通过配方，将成膜温度降低到200℃以下，其工艺便利。 此外，膜机械性能优异，孔隙率高，渗透性充分，该方法适用于苛刻条件下的酸碱介质和有机溶剂的膜分离。

    Polyvinylidene Fluoride/Ultra-high Molecular Weight Polyethylene Blend Microporous Membrane and Preparation Method Thereof
    6.
    发明申请
    Polyvinylidene Fluoride/Ultra-high Molecular Weight Polyethylene Blend Microporous Membrane and Preparation Method Thereof 审中-公开

    公开(公告)号：US20190105611A1

    公开(公告)日：2019-04-11

    申请号：US16215629

    申请日：2018-12-10

    Applicant: Tianjin Polytechnic University

    Inventor： Nana LI ,  Xiaodong ZHANG ,  Weiwei Yin ,  Dan Guo ,  Changfa Xiao

    IPC: B01D67/00 ,  B01D61/36 ,  B01D71/34 ,  C23C14/12 ,  C23C14/35 ,  B29C45/00 ,  B29C45/73

    Abstract: Disclosed is a polyvinylidene fluoride/ultra-high molecular weight polyethylene blend microporous membrane and preparation method thereof, which belongs to the field of microporous membrane. The blend microporous membrane has good hydrophobicity, mechanical properties and permeability. The preparation method includes: preparing a suspension by polyvinylidene fluoride, ultra-high molecular weight polyethylene, antioxidant and diluent; then feeding the obtained suspension into a twin-screw extruder, and the cast membrane gel extruded from the outlet is directly injected into a metal mold for injection molding; the mold temperature and the outlet temperature of the extruder are the same, and the cavity surface of the mold has micro-prism array structure; then cooling the mold in aqueous medium to obtain a nascent gel membrane; drying the obtained nascent gel membrane in a freeze dryer after removal of the diluents by extraction. The prepared membrane can be used in the membrane separation technology such as membrane distillation.

    Method for preparing homogeneous braid-reinforced PPTA hollow fiber membrane
    9.
    发明授权
    Method for preparing homogeneous braid-reinforced PPTA hollow fiber membrane 有权
    均匀编织增强PPTA中空纤维膜的制备方法

    公开(公告)号：US09533266B2

    公开(公告)日：2017-01-03

    申请号：US14857874

    申请日：2015-09-18

    Applicant: TIANJIN POLYTECHNIC UNIVERSITY

    Inventor： Changfa Xiao ,  Chun Wang ,  Mingxing Chen ,  Qinglin Huang ,  Hailiang Liu

    IPC: B01D67/00 ,  B01D39/00 ,  B01D33/21 ,  B01D69/00 ,  B29C47/00 ,  B29C47/88 ,  B01D71/56 ,  B01D63/02 ,  B01D69/12 ,  B01D69/14

    CPC classification number: B01D71/56 ,  B01D63/027 ,  B01D67/0093 ,  B01D69/08 ,  B01D69/12 ,  B01D69/148 ,  B01D2325/40

    Abstract: A method for preparing a homogeneous braid-reinforced (HMR) PPTA hollow fiber membrane combines PPTA hollow tubular braids with PPTA surface separation layer. The method includes following steps of: (1) preparing the PPTA hollow tubular braids, wherein the PPTA hollow tubular braids which are made from PPTA filament yarns are woven by a two-dimensional braided method, the outer diameter of the PPTA tubular braids is 1-2 mm; (2) preparing the PPTA casting solution as the surface separation layer, wherein the 1-3 wt % PPTA resin, 0-2 wt % inorganic particles and 10-20 wt % pore-forming agents are mixed into 75-89% inorganic acid solvent, stirred for 1-3 hours at 70° C.-90° C. to form homogeneous and transparent casting solution; and (3) preparing reinforced PPTA hollow fiber membrane, wherein the casting solution as the surface separation layer is evenly coated on the surfaces of the PPTA hollow tubular braids through spinneret, and they are immersed in a coagulation bath for solidified formation.

    Abstract translation: 制备均匀编织增强（HMR）PPTA中空纤维膜的方法将PPTA中空管状编织物与PPTA表面分离层结合。 该方法包括以下步骤：（1）制备PPTA中空管状编织物，其中由PPTA长丝纱制成的PPTA中空管状编织物通过二维编织方法编织，PPTA管状编织物的外径为1 -2毫米; （2）制备作为表面分离层的PPTA浇铸溶液，其中将1-3重量％PPTA树脂，0-2重量％无机颗粒和10-20重量％成孔剂混合到75-89％无机酸 溶剂，在70℃-90℃下搅拌1-3小时以形成均匀且透明的浇铸溶液; 和（3）制备增强PPTA中空纤维膜，其中作为表面分离层的浇铸溶液通过喷丝头均匀地涂覆在PPTA中空管状编织物的表面上，并将它们浸入凝固浴中以固化形成。

    Hollow tubular oil absorbing material and preparing method thereof
    10.
    发明申请
    Hollow tubular oil absorbing material and preparing method thereof 审中-公开
    中空管状吸油材料及其制备方法

    公开(公告)号：US20160256849A1

    公开(公告)日：2016-09-08

    申请号：US14778102

    申请日：2014-10-28

    Applicant: TIANJIN POLYTECHNIC UNIVERSITY

    Inventor： Changfa Xiao ,  Zitao Wang ,  Jian Zhao ,  Xioa Hu ,  Qinglin Huang

    IPC: B01J20/02 ,  B01J20/32 ,  B01J20/28 ,  B01J20/26 ,  B01J20/22

    CPC classification number: B01J20/0262 ,  B01J20/20 ,  B01J20/22 ,  B01J20/26 ,  B01J20/28 ,  B01J20/28045 ,  B01J20/28054 ,  B01J20/30 ,  B01J20/3206 ,  B01J20/3208 ,  B01J20/3212 ,  B01J20/3234 ,  C09K3/32

    Abstract: A hollow tubular oil absorbing material includes: a core formed by a spring, and an outer shell formed by a flat sponge wrapped at the spring; wherein the flat sponge is fixed at both ends of the spring; the flat sponge fully covers all the spring or is sealed at a first end; a connecting tube is connected at a second end of the spring for communicating with a vacuum pump; a graphene oxide layer is coated at the outer sponge. The graphene oxide layer on the flat sponge of hollow tubular oil absorbing material is formed by immersion and coating under negative pressure. Further the reduction of graphene oxide is performed with hydrazine hydrate steam and followed by washing and drying. Finally, a hollow tubular oil absorbing material with a spring core and an outer grapheme-coated sponge structure is obtained, which can be applied to continuous oil-water separation.

    Abstract translation: 中空管状油吸收材料包括：由弹簧形成的芯和由弹簧包裹的扁平海绵形成的外壳; 其中所述扁平海绵被固定在所述弹簧的两端; 扁平海绵完全覆盖所有弹簧或在第一端密封; 连接管连接在弹簧的第二端，用于与真空泵连通; 在外海绵处涂覆石墨烯氧化物层。 中空管状油吸收材料的扁平海绵上的石墨烯氧化层通过在负压下浸渍和涂覆而形成。 此外，还原石墨烯氧化物是用水合肼蒸汽进行的，随后进行洗涤和干燥。 最后，获得了一种具有弹簧芯和外部刻画海绵结构的中空管状吸油材料，可以应用于连续的油水分离。

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