87 results about "Polymer supported" patented technology

The invention belongs to the field of functional material preparation, and relates to an MOFs crystal film and a preparation method and application thereof. According to the MOFs crystal film, a porous polymer supporting film is used as a carrier, a high-crystallinity, compact and continuous rigid MOFs crystal layer grows on the surface of the porous polymer supporting film in situ, and a solid / quasi-solid electrolyte system is formed by matching polymer electrolyte or electrolyte. The MOFs ordered pore channel ion screening effect and metal ion sites are used for limiting anions, so that the ion transference number is increased; a physical-chemical synergistic dendritic crystal inhibiting mechanism is realized by utilizing high mechanical strength and a high crystal structure; the low-tortuosity compact ordered MOFs crystal film is used for improving the conductivity, the MOFs electrolyte with wide temperature range stability and high voltage resistance is obtained, and a support is provided for realizing a secondary battery with high energy density and high safety.

The present application provides a composite current collector, and a preparation method therefor and the use thereof. The composite current collector comprises: a polymer supporting layer; a transition layer, which is provided on the surface of at least one side of the polymer supporting layer, wherein the material of the transition layer comprises a nano metal material modified with a silane coupling agent, the nano metal material comprising a nano metal simple substance and / or a nano metal oxide; and a conductive layer, which is provided on the surface of the transition layer along a direction away from the polymer supporting layer. In the present application, introducing the nano metal material modified with a silane coupling agent as a transition layer can tightly combine the organic and inorganic interfaces, and improve the bonding force between the polymer supporting layer and the transition layer; in addition, the particle aggregation degree can be reduced by means of the modification of the silane coupling agent, such that the particles are evenly distributed in the transition layer, thereby improving the bonding force between the conductive layer and the transition layer. The composite current collector has excellent bonding force and stability; and the safety performance and high-temperature cycle performance of a battery prepared on this basis are significantly improved.

The present invention discloses a method for batch preparation of graphene electron microscope grids. The present invention realizes high-quality batch transfer of graphene and electron microscope grids by designing a multi-level transfer medium (including a PDMS porous template, a polymer support layer and a small molecule buffer layer) in combination with a solvent volatilization-induced elastic capillary bonding process. Specifically, the surface of the graphene is uniformly coated with a small molecule / polymer transfer medium layer, and then bonded to the PDMS porous array template. After the graphene is peeled off from the growth substrate, the graphene supported by the polymer film in the suspended part of the PDMS is bonded to the electron microscope grid using a solvent thermal bonding method; finally, the transfer medium is removed to obtain the graphene grid. The method of the present invention has the advantages of simple process, reusable PDMS template and good compatibility, and is suitable for large-scale production. At the same time, the prepared graphene grid has high cleanliness and integrity, and can meet the application requirements in the field of cryo-electron microscope grids.

Disclosed is an anion exchange membrane. The anion exchange membrane includes: a porous polymer support; and an anion exchange polymer, wherein the anion exchange polymer is situated on a surface and in pores of the porous polymer support, anion exchange groups of the anion exchange polymer are uniformly distributed on the surface and in the pores of the porous polymer support, the porous polymer support has a basis weight of about 10 g / m2 to about 60 g / m2, and the anion exchange polymer may be a crosslinked product of a composition including a crosslinkable monomer represented by Formula 1.

The invention relates to the technical field of membrane separation, in particular to a molybdenum disulfide composite membrane and a preparation method and application thereof. The problems that an existing polymer separation membrane is low in interface stability and insufficient in surface hydrophilicity, and in the compounding process of a two-dimensional nano material and the polymer separation membrane, the interface bonding force is weak, the material is prone to loss, and the hydrophilicity and the separation performance are difficult to synergistically improve are solved. The invention relates to a preparation method of a molybdenum disulfide composite film. The preparation method comprises the following steps: 1, depositing MoS2 / Zn (OH) 2 composite particles on a polymer supporting film; step 2, placing the membrane obtained in the step 1 in an organic ligand solution, generating ZIF-8 in composite particles through self-limiting in-situ conversion, and forming a MoS2 / ZIF-8 composite transition layer; 3, the membrane obtained in the step 2 makes contact with a polyethyleneimine solution for grafting, a polyamide layer is formed through interfacial polymerization reaction, and the composite membrane is obtained after curing. The structural stability and flux of the composite membrane are improved, and efficient and stable adsorption and separation of heavy metal ions are realized.

The present disclosure relates to electronic devices and methods of forming the same. A method and electronic device are disclosed. The method can be used to allow processing of a thin layer of a workpiece including a die. The workpiece can include a base substrate and a plurality of layers overlying the base substrate. The method can include forming a polymer support layer over the plurality of layers, thinning or removing the base substrate within a component region of the workpiece, where the component region includes an electronic device, and dicing the workpiece into a plurality of dies after thinning or removing the base substrate. In another aspect, the electronic device can be formed using such a method. In one embodiment, the workpiece can have a size corresponding to a semiconductor wafer to allow wafer-level processing rather than die-level processing.

An anion exchange membrane and a method for producing the same are disclosed. The anion exchange membrane comprises a porous polymer support; and an electrolyte containing an anion exchange polymer; wherein the electrolyte is located on the surface and in part within the pores of the porous polymer support; and the anion exchange polymer is also a crosslinking product of a composition containing a crosslinkable monomer represented by the following chemical formula 1 and an ionic monomer represented by the following chemical formula 2: JPEG2026516927000016.jpg56170 In chemical formulas 1 and 2, A, R1, R2, R3, R4, X - , Y - p, q, and r are as disclosed in the specification, respectively.

Provided is a carbon dioxide adsorbing / desorbing material having a high desorption rate.　This carbon dioxide adsorbing / desorbing material contains a carrier and an alkylene imine polymer supported on the carrier, wherein the alkylene imine polymer contains structural units (A) represented by general formula (1), has a number-average molecular weight (Mn) of 200-6000, and has a degree of branching of greater than 0% and no greater than 35%.

A heating plate (1) for the floor of a ship, comprising:-a metal base (3); a metal cover (2); -a polymeric support (4) arranged between the base (3) and the cover (2); -a heating element (5) adapted to generate heat upon energization and arranged between the polymeric support (4) and the cover (2); wherein the base (3) and the cover (2) form a hermetically sealed housing (10), in particular by means of a sealing material; wherein the polymer support (4) and the heating element (5) are arranged in the hermetically sealed housing (10); wherein the base (3) is provided with a peripheral side wall (31) extending laterally from a flat portion (30) of the base (3); the heating plate (1) comprises at least one temperature probe (6a, 6b) or at least one tube adapted to receive a temperature probe, passing through a corresponding first opening (36a, 36b) of the peripheral side wall (31); the respective first opening (36a, 36b) is completely blocked, in particular partially blocked by a respective temperature probe (6a, 6b) or by a respective tube and partially blocked by a sealing material.

The invention belongs to the technical field of membrane separation, and particularly discloses a preparation method of a high-flux pollution-resistant silver bromide / polyamide composite reverse osmosis membrane, which comprises the following steps: firstly, depositing a layer of silver bromide nanoparticles on the surface of a polymer porous support layer; then, m-phenylenediamine and trimesoyl chloride are subjected to an interfacial polymerization reaction on the surface of the porous supporting layer deposited with the silver bromide nanoparticles, and a silver bromide / polyamide composite separation layer is formed on the surface of the porous supporting layer; and finally, inducing the nano silver bromide in the composite separation layer to photolyze by utilizing illumination, forming nano pore channels in the separation layer and releasing silver nanoparticles, and preparing to obtain the high-flux pollution-resistant silver bromide / polyamide composite reverse osmosis membrane. According to the reverse osmosis membrane prepared by the method, the water yield can be remarkably increased while the relatively high desalination rate is maintained, and the reverse osmosis membrane has relatively high microbial pollution resistance.

The application provides a composite current collector, a preparation method thereof and application of the composite current collector in a negative electrode-free lithium metal battery, and belongs to the technical field of battery materials. The composite current collector comprises a polymer support layer and a carbon-based composite material active layer arranged on at least one side surface of the polymer support layer; and the material in the carbon-based composite material active layer comprises carbon nanomaterial and fluorine-containing polymer material. The application takes the polymer support layer as a base material, prepares the carbon-based composite material active layer on at least one side surface of the base material, and obtains the composite current collector. Due to the introduction of the support layer and the synergistic cooperation of the carbon nanomaterial and the fluorine-containing polymer material, the mechanical property of the composite current collector is effectively improved, and the generation of defects in the battery processing and cycling process is avoided. The charge-discharge cycling performance of the negative electrode-free lithium metal battery prepared based on the composite current collector is significantly improved.

The application discloses an integrated polybenzimidazole gradient membrane and a preparation method and application thereof. The preparation method comprises the following steps: applying a first solution containing polybenzimidazole, a polar solvent and a small-molecule sacrificial template to a substrate surface, removing the polar solvent, forming a dense small-molecule solvated polymer support layer, applying a second solution containing polybenzimidazole and a polar solvent to the surface of the small-molecule solvated polymer support layer, removing the polar solvent to form a screening layer, and fusing the small-molecule solvated polymer support layer and the screening layer to form an integrated structure, thereby obtaining an integrated polybenzimidazole membrane. In-situ etching treatment is performed to obtain an integrated polybenzimidazole gradient membrane. According to the application, a high-selectivity separation thin layer is constructed on the surface of the polymer support layer, the hydrophilic narrow ion channel size can ensure ion screening, the trade-off effect of conductivity and selectivity is broken through, and the membrane has high ion conductivity, high mechanical property, high ion selectivity and high stability.

The utility model discloses a jacquard shed machine, including casing and fixed on the casing ventilation device. The ventilation device has a fan and a support, the support defines an interior space that extends continuously from a first opening at a fixed portion to a second opening at a support portion. The fixed portion is fixed to the casing, and the first opening is aligned with the fan. A cylindrical filter is fixed to the support portion of the support. The cylindrical filter is located outside the interior space of the support and outside an enclosed operating space of the jacquard shed machine. The exterior of the jacquard shed machine is in fluid communication with the enclosed operating space through the cylindrical filter, through the second opening, through the interior space of the support, through the first opening, through a vent hole of the casing, and through the fan. The support is a molded polymer support. Thus, the jacquard shed machine has more efficient filtration performance, and the volume impact of the ventilation device is limited.

The present invention relates to a hollow fiber membrane, a manufacturing method therefor, and a fuel cell membrane humidifier comprising the hollow fiber membrane, the hollow fiber membrane comprising: a polymer support; and a metal-based antioxidant or a composite antioxidant comprising a metal-based antioxidant and an antioxidant adjuvant, wherein the metal-based antioxidant and / or the antioxidant adjuvant are dispersed in a non-crosslinked form in the polymer support, and the hollow fiber membrane selectively permeates moisture.

The invention discloses a preparation method of a super-crosslinked polymer supported chiral ferrocene catalyst, and belongs to the technical field of organic chemistry. The preparation method comprises the following steps: in an inert gas atmosphere, dissolving a ligand or a mixture containing the ligand and metal salt in a solvent, stirring at room temperature until the ligand or the mixture is dissolved, then adding an aryl-containing comonomer, and continuously stirring and dissolving to obtain a reaction solution; and adding Lewis acid or Bronsted acid, and carrying out Friedel-Crafts alkylation reaction to obtain the supported chiral ferrocene catalyst. Wherein the ligand is selected from a compound as shown in L1-L12. Compared with a previous covalent bond polymerization method, the loading scheme has the advantages that the catalyst does not need to be modified, and the loading scheme has relatively large application potential aiming at a series of aromatic ring-containing micromolecular catalysts and has the advantages of simplicity, high efficiency and relatively good universality.

The invention discloses a preparation method of a composite nanofiltration membrane with three-dimensional folds, and belongs to the technical field of membrane separation. The preparation method of the composite nanofiltration membrane with the three-dimensional folds comprises the following steps: putting a polymer support membrane into a mixed solution consisting of ferric salt (ferric trichloride or ferric sulfate) and ferrous salt (ferrous chloride or ferrous sulfate), adding ammonia water into the mixed solution, and reacting to obtain a support membrane with in-situ implanted ferroferric oxide nanoparticles; and sequentially placing the support membrane in which the ferroferric oxide nanoparticles are implanted in situ into a water phase solution and an oil phase solution for treatment, and then performing acid etching to obtain the three-dimensional wrinkle type composite nanofiltration membrane. The three-dimensional porous folded structure is formed in the polyamide layer by regulating and controlling the particle size of the nano ferroferric oxide template and an acid etching process, the water flux and comprehensive performance of the membrane are remarkably improved, and the membrane is suitable for the fields of seawater desalination, industrial wastewater treatment, biological medicine separation and the like.

The present invention relates to a porous water electrolysis separation membrane using a boron nitride compound. More specifically, the porous water electrolysis separation membrane comprises a porous polymer support and a boron nitride compound inserted into the inside of the porous polymer support or formed on a surface thereof. The water electrolysis separation membrane according to the present invention as described above exhibits excellent heat resistance and stability and has smaller pore sizes, thereby reducing the permeability of hydrogen and oxygen and achieving high hydrogen gas purity. In addition, with a reduced thickness, the water electrolysis separation membrane exhibits low sheet resistance and thus increases current density to improve electrolytic cell efficiency.

The present disclosure relates to an ultra-thin polymer separation membrane including: a porous polymer support layer; a gutter layer formed on the porous polymer support layer; and a semi-crystalline polymer selection layer formed on the gutter layer, wherein the semi-crystalline polymer selection layer is coated with a nanometer-level thickness in a state in which the temperature of a semi-crystalline polymer solution is 0° C. to −50° C. Therefore, the crystallinity and orientation of the ultra-thin polymer separation membrane, essentially required for the scale-up of a separation membrane process and the actual application in the industry, can be controlled easily using a low-temperature coating method, in which the temperature of the polymer solution is lowered, during the coating of the selection layer. Furthermore, separation performance can be enhanced remarkably by using only polymers as raw materials, without additional additives that have been used in the manufacturing of conventional ultra-thin polymer separation membranes.

The present application relates to the technical field of two-dimensional material, and particularly relates to a method for wetly transferring intact two-dimensional material on steep side wall based on stress transfer principle. The method comprises the following steps: coating a polymer support layer on the surface of two-dimensional material, coating a photoresist layer on the surface of two-dimensional material with the polymer support layer, then performing patterning on the photoresist layer to form a stress transfer area without photoresist and a stress protection area with photoresist; finally, transferring the two-dimensional material with the composite sacrificial coating to a target substrate; wherein the target substrate has a planar structure with steps. By adjusting the pattern of the photoresist layer, the stress concentration degree of different thickness areas is different, and the stress release of the two-dimensional material is realized; the natural fracture occurs in the area without photoresist protection, and the intact transfer of the two-dimensional material on the side wall is ensured; the limitation of the prior art is solved, and a new way for preparing novel two-dimensional devices is provided.

The application discloses a method for preparing a large-area MOF film by using a double polymer and the large-area MOF film, and the MOF film comprises a polymer support body, a ultrafiltration membrane and a polydimethylsiloxane coating layer, the coating layer completely or incompletely covers one side surface of the ultrafiltration membrane; a MOF metal-organic framework is assembled on the polymer support body; the method comprises the following operations: soaking one side of the polydimethylsiloxane coating layer of the polymer support body in a dispersion liquid to deposit a cross-linked polymer network layer; soaking one side of the ultrafiltration membrane in a ligand solution to perform ligand back diffusion and assemble a MOF metal-organic framework on the cross-linked polymer network layer; and the dispersion liquid comprises polyvinyl alcohol, polyvinylamine, a metal salt and a solvent. The preparation method can realize the preparation of a large-area ultra-thin continuous MOF film with an area greater than 100 cm 2 , and the MOF film has good C3H6 / C3H8 separation performance.

The invention belongs to the technical field of electronic paper display structures, and particularly relates to a nested electrophoretic display structure. Comprising an electrophoresis display module, the electrophoresis display module comprises a liner frame, a pixel electrode, an upper-layer flexible transparent substrate and an electrophoresis layer, the electrophoresis layer is arranged between the pixel electrode and the upper-layer flexible transparent substrate, and the liner frame is located on the pixel electrode and located on the peripheral side of the electrophoresis layer; the electrophoresis layer comprises a transparent porous polymer support, and a dichroic electrophoretic particle electrophoresis liquid system is arranged in holes of the transparent porous polymer support; an upper-layer transparent electrode is arranged between the upper-layer flexible transparent base material and the electrophoresis layer, conductive silver paste is arranged on the liner frame, and the upper-layer transparent electrode is in contact with the electrophoresis layer and the conductive silver paste. The chemical process problem that microcapsules in traditional electronic paper are complex in preparation and poor in stability is solved, the production efficiency is improved, and the manufacturing cost is reduced.

The present invention discloses a method for patterning suspended heterogeneous films and a method for preparing pressure sensors. All steps of the method are fully compatible with current CMOS processes. Without the need for additional customized equipment, large-scale wafer preparation and cost reduction of suspended two-dimensional material structures can be achieved. During the implementation of the method, the two-dimensional material is supported and protected by a polymer support material throughout the entire process, effectively avoiding damage to the two-dimensional material during implementation.

The invention discloses a conductive graphene composite nanofiltration membrane with electric response performance and a preparation method thereof, and belongs to the technical field of graphene nanofiltration membrane materials, and the preparation method comprises the following steps: 1) dispersing reduced graphene oxide nanosheet dispersion liquid and glycine modified graphene oxide nanosheet dispersion liquid in a solvent to form mixed dispersion liquid; 2) loading the mixed dispersion liquid on the surface of a polymer support membrane through vacuum filtration to form a nanofiltration separation layer; and 3) drying the nanofiltration separation layer to obtain the conductive graphene composite nanofiltration membrane with electric response performance. And 4) applying an external voltage in the process of testing the electrical response separation performance of the conductive graphene composite nanofiltration membrane. According to the prepared conductive graphene composite nanofiltration membrane, the electrostatic repulsion effect of the conductive graphene composite nanofiltration membrane on SO4 < 2-> is enhanced, and the transmembrane energy barrier of Na < + > is reduced to promote faster collaborative transmission of Cl <->, so that good Cl / SO4 < 2-> separation performance is realized.

A method for manufacturing a catalyst for a hydrogenation reaction, the method including: preparing a polymer support including a repeating unit of Formula 1, and supporting a catalytic component on the polymer support:wherein in Formula 1, means a point where the repeating units are linked, L1, L2 and L3 are O, R1 and R2 are the same as or different from each other, and are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms, m is 0 or 1, and p and q are each independently an integer from 0 to 4.

The invention discloses an integrated polybenzimidazole gradient film as well as a preparation method and application thereof. The preparation method comprises the following steps: applying a first solution containing polybenzimidazole, a polar solvent and a small-molecule sacrificial template to the surface of a substrate, removing the polar solvent, forming a film to obtain a compact small-molecule solvated polymer supporting layer, applying a second solution containing polybenzimidazole and the polar solvent to the surface of the compact small-molecule solvated polymer supporting layer, removing the polar solvent to form a screening layer, and drying the screening layer to obtain the polybenzimidazole / small-molecule sacrificial template composite film. The micromolecule solvated polymer supporting layer and the screening layer are mutually fused to form an integrated structure, an integrated polybenzimidazole membrane is obtained, in-situ etching treatment is conducted, and the integrated polybenzimidazole gradient membrane is obtained. The high-selectivity separation thin layer is constructed on the surface of the polymer supporting layer, the size of a hydrophilic narrow ion channel of the separation thin layer can ensure ion screening, the trade-off effect of conductivity and selectivity is cooperatively broken through, and the membrane has high ion conductivity, high mechanical performance, high ion selectivity and high stability.

The present invention relates to a lithium-ion secondary battery comprising a cathode, an anode, and a separator arranged between the cathode and the anode; the cathode comprising a current collector C' and a layer C comprising a first active material, a conductive agent and a first binder; the anode comprising a current collector A' and a layer A comprising a second active material and a second binder; the separator comprising either a porous polymer support S and a coating SC arranged on the porous support S, or a solid electrolyte comprising a coating SC, characterised in that the first binder L1, the second binder L2 and the coating SC each comprise at least one polymer P having a solubility greater than 0.01 g / ml at room temperature in a solvent S1 having a donor number greater than 4 kcal / mol.

The application discloses a kind of high-efficiency interception polyvalent anion and cation nanofiltration membrane and its preparation method and application.The method includes the following preparation process:1) preparation concentration is 0.1-2wt% of apigenin class of substance aqueous solution, and concentration is 0.1-0.5wt% of multi-acid chloride organic phase solution;2) make polymer support membrane in aqueous solution 1-5min, remove the surface excess solution, then immerse into oil phase solution, react 1-15min;3) after reaction, remove the surface excess solution, solidify 5-20min under 60-80 DEG C, obtain the nanofiltration membrane.The application is with apigenin, apigenin-7-o-glucuronide and / or isofraxidin as aqueous monomer, and multi-acid chloride is prepared by interfacial polymerization reaction to obtain negative NF membrane, not only maintain the high interception rate to polyvalent anion, and also have very high interception rate to polyvalent cation, can efficiently permeate monovalent ion, and water flux is larger.

The application discloses a negative-electrode-free sodium battery diaphragm, a preparation method and application thereof, and relates to the technical field of negative-electrode-free sodium batteries. The application forms a sandwich structure by using a positive electrode side polymer layer, a heat conduction layer and a negative electrode side polymer layer, introduces polyolefin elastomer POE into the negative electrode side polymer layer, enhances the elasticity of the diaphragm, buffers the expansion and contraction of the negative electrode side in the charging and discharging process, guarantees the close adhesion of the interface, the heat conduction layer quickly conducts heat, reduces the interface side reaction caused by the heat accumulation, avoids the loss of elasticity of the elastic layer due to high temperature aging, and the positive electrode side polymer support layer guarantees the overall mechanical strength, avoids the deformation of the diaphragm in the cycle process, and prevents the short circuit condition. The sandwich structure can effectively solve the core problems of the interface buffer adhesion and the low heat dissipation efficiency of the negative-electrode-free battery, provide sufficient mechanical strength to prevent the deformation of the diaphragm and the short circuit of the battery, and can simultaneously improve the expansion buffer effect, the heat dissipation capacity, the electrochemical performance and the gas production inhibition effect.

The utility model relates to a macromolecule supporting piece for a thrombus breaker, and the macromolecule supporting piece for the thrombus breaker comprises a macromolecule piece, the macromolecule piece is of a columnar structure, clamping jaw mounting holes are formed in the two axial ends of the macromolecule piece, and the macromolecule piece is suitable for a cutting jaw of the thrombus breaker to penetrate through. More than two clamping jaw grooves are formed in the side wall of the polymer part in the axial direction, the clamping jaw grooves are matched with the cutting jaws, the cutting jaws can be collected in the clamping jaw grooves, annular grooves are formed in the side wall of the polymer part in the circumferential direction, and by using the polymer part of a columnar structure, a mounting position is provided for the clamping jaws of the thrombus breaker; the edge of the high-molecular part is provided with the zigzag groove, so that the overall flexibility and the turning capacity are improved, the high-molecular part can reach a farther and tortuous blood vessel environment, and the problem that the high-molecular part cannot reach farther and more difficult blood vessels is solved.

Provided are: a negative electrode for a lithium secondary battery; a method for manufacturing same; and a lithium secondary battery including same. The negative electrode comprises: a current collector; and a protective layer disposed on one surface of the current collector, wherein the protective layer includes a polymer support and a lithiophilic material, and has a concentration gradient region in which the concentration of the lithiophilic material progressively increases in a direction from one side of the protective layer on which the current collector is disposed toward the other side of the protective layer on which the current collector is not disposed.