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    Hollow tubular oil absorbing material and preparing method thereof
    2.
    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
    3.
    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。

    Method for preparing homogeneous braid-reinforced PPTA hollow fiber membrane
    5.
    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
    6.
    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。

    Preparation method of homogeneous-reinforced PVDF hollow fiber membrane
    7.
    发明申请
    Preparation method of homogeneous-reinforced PVDF hollow fiber membrane 审中-公开
    均质增强PVDF中空纤维膜的制备方法

    公开(公告)号：US20150096934A1

    公开(公告)日：2015-04-09

    申请号：US14381213

    申请日：2013-01-24

    Applicant: TIANJIN POLYTECHNIC UNIVERSITY

    Inventor： Changfa Xiao ,  Xuliang Zhang ,  Xiaoyu Hu ,  Shulin An ,  Qinglin Huang ,  Guolan Huan

    IPC: B01D71/34 ,  B01D63/02 ,  B01D67/00 ,  B01D69/08 ,  B01D69/12

    CPC classification number: B01D71/34 ,  B01D63/02 ,  B01D63/021 ,  B01D67/0013 ,  B01D67/0016 ,  B01D67/002 ,  B01D69/02 ,  B01D69/08 ,  B01D69/088 ,  B01D69/10 ,  B01D69/12 ,  B01D2323/00 ,  B01D2325/40

    Abstract: A preparation method of a homogeneous-reinforced PVDF hollow fiber membrane includes steps of: a) preparing a reinforced matrix membrane, wherein a PVDF hollow fiber membrane is utilized as the reinforced matrix membrane; b) preparing a PVDF casting solution, wherein mass fractions of the PVDF casting solution are: PVDF 6˜20 wt %; hydrophilic polymers or hydrophilic inorganic particles 0.6˜2 wt %; pore-forming agent 6˜10 wt %; and solvent 68˜87.4 wt %; mixing the above solutes in a water bath with a temperature of 70˜90° C., dissolving for 3˜4 h with stirring, then deaerating under vacuum for obtaining the uniform PVDF casting solution; and c) preparing the homogeneous-reinforced membrane; wherein the PVDF casting solution is uniformly coated on an outer surface of the reinforced matrix membrane through a spinning spinneret, then the reinforced matrix membrane is towed by a filament guide roller in such a manner that the hollow fiber forms a membrane, then the membrane passes through an air gap with a length of 5˜20 cm and is immersed in ultrafiltered water for coagulation, in such a manner that the homogeneous-reinforced membrane is obtained; wherein a traction speed is 5˜25 cm/(r·min).

    Abstract translation: 均质增强PVDF中空纤维膜的制备方法包括以下步骤：a）制备增强基质膜，其中使用PVDF中空纤维膜作为增强基质膜; b）制备PVDF浇注溶液，其中PVDF浇铸溶液的质量分数为：PVDF 6〜20wt％; 亲水性聚合物或亲水性无机颗粒0.6〜2重量％ 成孔剂6〜10重量％ 和溶剂68〜87.4wt％; 将上述溶质混合在温度为70〜90℃的水浴中，搅拌溶解3〜4h，然后真空脱气，得到均匀的PVDF浇铸溶液; 和c）制备均质增强膜; 其中通过纺丝喷丝头将PVDF铸塑溶液均匀地涂覆在增强基体膜的外表面上，然后用丝导引辊牵引加强基体膜，使得中空纤维形成膜，然后膜通过 通过长度为5〜20cm的气隙，浸渍在超滤水中进行凝固，得到均质增强膜; 牵引速度为5〜25cm /（r·min）。

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

    公开(公告)号：US20160001233A1

    公开(公告)日：2016-01-07

    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: B01D69/08 ,  B01D71/56

    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。

    Preparation method of perfluorinated polymer hollow fiber membrane
    10.
    发明授权
    Preparation method of perfluorinated polymer hollow fiber membrane 有权
    全氟聚合物中空纤维膜的制备方法

    公开(公告)号：US09211503B2

    公开(公告)日：2015-12-15

    申请号：US14358597

    申请日：2013-01-24

    Applicant: TIANJIN POLYTECHNIC UNIVERSITY

    Inventor： Changfa Xiao ,  Zhongqing Miao ,  Qinglin Huang ,  Shulin An

    IPC: B01D67/00 ,  B01D71/32 ,  B01D69/08 ,  B01D63/02 ,  B01D71/06 ,  B01D71/82 ,  C02F1/44

    CPC classification number: B01D67/003 ,  B01D63/02 ,  B01D67/0093 ,  B01D69/087 ,  B01D71/32 ,  B01D2323/18 ,  B01D2325/14 ,  C02F1/44

    Abstract: A preparation method of a perfluorinated polymer hollow fiber membrane comprises: evenly mixing a first mixture that is mixed by a perfluorinated polymer, PS, a polymer additive, and a composite pore-forming agent; evenly mixing a second mixture that is mixed by the first mixture and an organic liquid; under 300° C.-350° C., processing the second mixture with a melt to spin by a twin-screw extruder; extruding a hollow fiber by a hollow fiber spinneret; dipping the hollow fiber membrane into deionized water for 48 hours; putting the hollow fiber membrane aired into a concentrated sulfuric acid to process with a sulfonation; washing the hollow fiber membrane by deionized water; and drying the hollow fiber membrane; in such a manner that the hydrophilic perfluorinated polymer hollow fiber membrane is obtained.

    Abstract translation: 全氟化聚合物中空纤维膜的制备方法包括：将由全氟化聚合物PS，聚合物添加剂和复合成孔剂混合的第一混合物均匀混合; 均匀混合由第一混合物和有机液体混合的第二混合物; 在300℃-350℃下，用熔融物处理第二混合物通过双螺杆挤出机旋转; 通过中空纤维喷丝头挤出中空纤维; 将中空纤维膜浸入去离子水中48小时; 将中空纤维膜放入浓硫酸中进行磺化处理; 用去离子水清洗中空纤维膜; 并干燥中空纤维膜; 以这样的方式获得亲水性全氟化聚合物中空纤维膜。

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