专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11623182B2 Nanofiltration membrane with high flux for selectively removing hydrophobic endocrine disrupting chemicals and preparation method thereof 有权
公开(公告)号：US11623182B2
公开(公告)日：2023-04-11
申请号：US16908670
申请日：2020-06-22
申请人： Tongji University , Tianjin Polytechnic University
发明人： Zhiwei Wang , Ruobin Dai , Hongwei Zhang , Liang Wang , Qiaoying Wang , Zhichao Wu
IPC分类号： B01D67/00 , B01D61/02 , B01D69/02 , B01D69/10 , B01D69/12 , B01D71/60 , C02F1/44 , B01D71/56 , B01D71/02 , B01J13/16 , C02F101/30
摘要： A nanofiltration membrane with a high flux for selectively removing hydrophobic endocrine disrupting chemicals and a preparation method thereof are provided. The method includes the following steps: immersing a porous support layer into a first solution, removing excess droplets from a surface of the support layer after taking the support layer out of the first solution, and then immersing the support layer attached with the first solution into a second solution for an interfacial polymerization reaction, followed by washing after completion of the reaction to obtain the subject nanofiltration membrane. The first solution is an aqueous solution containing a polyamine monomer and an acid binding agent, and the second solution is an organic solution containing an acid chloride monomer and a metal-organic framework.

2. 发明申请

US20190322541A1 LANTHANIDE FLUORIDE TWO-DIMENSIONAL POROUS NANOSHEETS, AND PREPARATION METHOD AND APPLICATIONS THEREOF 审中-公开
公开(公告)号：US20190322541A1
公开(公告)日：2019-10-24
申请号：US16457892
申请日：2019-06-28
申请人： TIANJIN POLYTECHNIC UNIVERSITY
发明人： YUZHONG ZHANG , LEITAO ZHANG , HONG LI
IPC分类号： C01F17/00 , B01J20/02 , B01J20/28 , B01J20/30 , B01J27/12 , B01J35/00 , B01J35/10 , B01J37/26 , B01J37/04 , H01M4/58 , B01D53/02
摘要： The present application provides a method for preparing lanthanide fluoride two-dimensional porous nanosheets and belongs to the field of novel materials. In the present application, mixing a water-soluble lanthanide metal salt and an aqueous solution of sodium acetate in a nitrogen atmosphere to obtain a mixed solution, and adding an aqueous solution of fluorine-containing salt to the mixed solution obtained for precipitation reaction to produce lanthanide fluoride two-dimensional porous nanosheets. In the preparation process provided by the present application, no additional surfactant or template agent needs to be added, the pollution of the surfactant to the surface of the prepared material is avoided and the tedious after-treatment steps to template agent are reduced. Accordingly, the large-scale production can be realized, and the lanthanide fluoride two-dimensional porous nanosheets constructed by nanoparticles are prepared in large scale by one step. Moreover, no other organic solvents are required, and the pollution to the environment during the preparation process is avoided.

3. 发明授权

US10252224B2 Hydrophobic-oleophilic hollow fiber composite membrane and preparing method thereof 有权
公开(公告)号：US10252224B2
公开(公告)日：2019-04-09
申请号：US15113256
申请日：2015-10-29
申请人： Tianjin Polytechnic University
发明人： Changfa Xiao , Junqiang Hao , Jian Zhao , Hailiang Liu , Qinglin Huang
IPC分类号： B01D71/34 , B01D71/82 , C02F1/44 , B01D69/08 , B01D67/00 , B01D69/12 , C02F101/32
摘要： The present invention discloses a hydrophobic-oleophilic and hollow fiber composite membrane and preparing method thereof. A preparing method includes preparing hollow tubular braids by two-dimensional braided technique using polyester filaments, wherein the hollow tubular braids are used as the reinforcements. The method further includes mixing polyvinylidene fluoride, hydrophobic pore-forming agent, and the rest of solvent to prepare a casting solution of surface separation layer. The method further includes pre-treatment processing of the reinforcements; and coating the casting solution of surface separation layer on the outer surface of the processed reinforcements through a spinning spinneret to form a primary membrane. The reinforcements are replaced by the primary after post-processing, and repeating the coating process.

4. 发明申请

US20180272289A1 Homogeneous fiber reinforced PVDF hollow fiber membrane and preparation method thereof 审中-公开
公开(公告)号：US20180272289A1
公开(公告)日：2018-09-27
申请号：US15989202
申请日：2018-05-25
申请人： TIANJIN POLYTECHNIC UNIVERSITY
发明人： Changfa Xiao , Jingjing Yan , Chun Wang , Xiaoyu Hu , Mingxing Chen , Hailiang Liu , Shulin An
IPC分类号： B01D69/08 , B01D71/34
CPC分类号： B01D69/088 , B01D67/0079 , B01D69/04 , B01D69/081 , B01D69/10 , B01D69/148 , B01D71/34
摘要： A homogeneous fiber reinforced PVDF hollow fiber membrane and a preparation method thereof are provided. The membrane includes a hollow tubular reinforcement made of PVDF fibers and a polymer separation layer made of PVDF casting solution; wherein the polymer separation layer casting solution comprises 4-25% PVDF resin, 5-20% pore-forming agent, 0-3% inorganic particles and 52-91% solvent according to mass fraction. The preparation method includes steps of: (1) preparing a hollow tubular reinforcement made of PVDF fibers; (2) preparing a PVDF polymer separation layer casting solution; and (3) obtaining the homogeneous fiber reinforced PVDF hollow fiber membrane.

5. 发明授权

US09988466B2 Benzocrown ether graft polymer with lithium isotopic separation effect and preparation method thereof 有权
公开(公告)号：US09988466B2
公开(公告)日：2018-06-05
申请号：US14612012
申请日：2015-02-02
申请人： TIANJIN POLYTECHNIC UNIVERSITY
发明人： Jianxin Li , Feng Yan , Benqiao He , Hong Wang
IPC分类号： B01D59/22 , C08F8/00 , C07D323/00 , C08G83/00 , C08L101/00 , B01J20/26 , C08G65/48 , C08G75/20 , C08G75/23
CPC分类号： C08F8/00 , B01D59/22 , B01J20/265 , C07D323/00 , C08G65/48 , C08G75/20 , C08G75/23 , C08G83/00 , C08G2650/40 , C08L101/005 , C08F216/06 , C08F220/06
摘要： Disclosed in the present invention is a benzocrown ether graft polymer with a lithium isotopic separation effect and a preparation method thereof. The polymer is a benzocrown ether graft polymer formed by the linkage of chemical bonds, which takes the main chain of a polymer containing chloromethyl group, chloroformyl group or hydroxyl group as main chain, and takes a benzocrown ether as pendant group. The preparation process of the polymer comprises the following steps: preparing polymer solution with certain concentration by dissolving a polymer containing chloromethyl group, chloroformyl group or hydroxyl group in a solvent; then blending a catalyst and a benzocrown ether containing carboxyl group or aldehydyl group and dissolving in the polymer solution containing hydroxyl group, or blending an acid-binding agent and a benzocrown ether containing amino group or hydroxyl group and dissolving in the polymer solution containing chloromethyl group or chloroformyl group, reacting at a certain temperature and for a certain time, linking the benzocrown ether to the main chain of polymer by chemical bonds, and precipitating by adding a precipitating agent to obtain the graft polymer. The grafting polymer has excellent characteristic of lithium isotopic separation.

6. 发明授权

US09533266B2 Method for preparing homogeneous braid-reinforced PPTA hollow fiber membrane 有权
标题翻译：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
申请人： TIANJIN POLYTECHNIC UNIVERSITY
发明人： Changfa Xiao , Chun Wang , Mingxing Chen , Qinglin Huang , Hailiang Liu
IPC分类号： B01D67/00 , B01D39/00 , B01D33/21 , B01D69/00 , B29C47/00 , B29C47/88 , B01D71/56 , B01D63/02 , B01D69/12 , B01D69/14
CPC分类号： B01D71/56 , B01D63/027 , B01D67/0093 , B01D69/08 , B01D69/12 , B01D69/148 , B01D2325/40
摘要： 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.
摘要翻译：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。

7. 发明申请

US20160256849A1 Hollow tubular oil absorbing material and preparing method thereof 审中-公开
标题翻译：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
申请人： TIANJIN POLYTECHNIC UNIVERSITY
发明人： Changfa Xiao , Zitao Wang , Jian Zhao , Xioa Hu , Qinglin Huang
IPC分类号： B01J20/02 , B01J20/32 , B01J20/28 , B01J20/26 , B01J20/22
CPC分类号： 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
摘要： 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.
摘要翻译：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。

8. 发明申请

US20150096934A1 Preparation method of homogeneous-reinforced PVDF hollow fiber membrane 审中-公开
标题翻译：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
申请人： TIANJIN POLYTECHNIC UNIVERSITY
发明人： Changfa Xiao , Xuliang Zhang , Xiaoyu Hu , Shulin An , Qinglin Huang , Guolan Huan
IPC分类号： B01D71/34 , B01D63/02 , B01D67/00 , B01D69/08 , B01D69/12
CPC分类号： 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
摘要： 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).
摘要翻译：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）。

9. 发明申请

US20200282362A1 REVERSE OSMOSIS MEMBRANE SUPPORT MATERIAL AND PREPARATION METHOD THEREOF 审中-公开
公开(公告)号：US20200282362A1
公开(公告)日：2020-09-10
申请号：US16681203
申请日：2019-11-12
申请人： TIANJIN POLYTECHNIC UNIVERSITY
发明人： Xupin ZHUANG , Bowen CHENG , Weimin KANG , Gaokai ZHANG , Xianlin XU , Lei SHI
IPC分类号： B01D69/10 , B01D61/02 , D04H13/00 , D21H13/24 , D21H15/10
摘要： The present invention relates to the technical field of filtering materials and provides a reverse osmosis membrane support material. The support material is obtained by hot pressing treatment of a surface layer, a middle layer and a bottom layer which are sequentially disposed from top to bottom. The surface layer and the bottom layer are each a spunbond non-woven fabric layer made of thermoplastic polymer spunbonded fibers, and the middle layer is a polymer nanofiber membrane. In accordance with the invention, the comprehensive mechanical strength of the reverse osmosis membrane support material is improved, and the overall anti-leakage performance is enhanced. A spunbond technology and a nanofiber preparation technology are combined organically, and the method is simple and controllable. The support material can be produced in batches.

10. 发明申请

US20170232402A1 HYDROPHOBIC-OLEOPHILIC HOLLOW FIBER COMPOSITE MEMBRANE AND PREPARING METHOD THEREOF 审中-公开
公开(公告)号：US20170232402A1
公开(公告)日：2017-08-17
申请号：US15113256
申请日：2015-10-29
申请人： Tianjin Polytechnic University
发明人： Changfa XIAO , Junqiang HAO , Jian ZHAO , Hailiang LIU , Qinglin HUANG
IPC分类号： B01D71/34 , C02F1/44 , B01D69/12 , B01D69/08 , B01D67/00
CPC分类号： B01D71/34 , B01D67/0011 , B01D69/08 , B01D69/081 , B01D69/12 , B01D71/82 , B01D2323/18 , B01D2323/40 , B01D2325/04 , B01D2325/38 , C02F1/44 , C02F1/444 , C02F2101/32
摘要： A hydrophobic-oleophilic and hollow fiber composite membrane includes hollow tubular braids and surface separation layers coated on the outer surfaces of the hollow tubular braids. Membrane-forming polymers in the surface separation layers are polyvinylidene fluoride, and all other components are hydrophobic ingredients, including graphene. A preparing method includes preparing hollow tubular braids by two-dimensional braided technique using polyester filaments, wherein the hollow tubular braids are used as the reinforcements. The method further includes mixing polyvinylidene fluoride, hydrophobic pore-forming agent, and the rest of solvent to prepare a casting solution of surface separation layer. The method further includes pre-treatment processing of the reinforcements; and coating the casting solution of surface separation layer on the outer surface of the processed reinforcements through a spinning spinneret to form a primary membrane. The reinforcements are replaced by the primary after post-processing, and repeating the coating process.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式