368 results about "Mixed matrix" patented technology

The invention discloses an antibacterial drug delivery system based on a dynamic response type microneedle patch and a preparation method, and belongs to the field of biomedical materials.The antibacterial drug delivery system comprises a substrate layer and a needle point layer arranged on the surface of the substrate layer, the substrate layer is a mixed matrix of polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP), and the needle point layer is made of nano-silver; the needle tip layer is a phenylboronic acid modified oxidized hyaluronic acid and polyvinyl alcohol composite system. The antibacterial drug delivery system based on the dynamic response type microneedle patch, namely the microneedle patch with the pH response drug release function, is suitable for antibacterial treatment of infectious wounds, the mechanical strength of the needle point layer is improved, it can be better guaranteed that a microneedle completely penetrates into the skin, and the delivery efficiency is improved; meanwhile, drug release can be responded according to the pH of a bacterial infection part, and the antibacterial effect is good.

The invention provides a loess slope unmanned aerial vehicle ecological restoration method and system based on water-retaining agent blending, and the method comprises the steps: preparing a composite water-retaining agent from sodium polyacrylate and biochar, coating grass seeds with a double-layer coating, and mixing the composite water-retaining agent, the coated grass seeds and a fertilizer to form a mixed matrix; a bio-based binder is sown in a to-be-sown area of a wind power plant slope and a photovoltaic power station, and a pre-sown area is obtained; when the pre-sowing area is a side slope, sowing the mixed matrix in a side slope mode of an unmanned aerial vehicle self-adaptive sowing mechanism; when the pre-sowing area is the flat ground, sowing the mixed matrix in a flat ground mode of an unmanned aerial vehicle self-adaptive sowing mechanism; after the sowing of the mixed matrix is completed, the microbial agent is additionally sprayed, the stress resistance of plants is improved, and the grass seed sowing success rate is effectively improved through the water retention of the grass seeds and the sowing control of the grass seeds according to conditions, so that the ecological restoration of the wind power plant land is facilitated.

The invention discloses an in-situ growth MOFs (Metal-Organic Frameworks) mixed matrix membrane as well as a method and application thereof, and belongs to the technical field of membrane separation. The method disclosed by the invention comprises the following steps: adding a Zn source and 2-methylimidazole into a solvent, and carrying out hydrothermal reaction to obtain Polymer-ZIF-8; the preparation method comprises the following steps: mixing Polymer-ZIF-8 with a diluent, and sequentially heating, uniformly mixing and cooling, so as to obtain a Polymer-ZIF-8 / diluent uniform block; the Polymer-ZIF-8 / diluent uniform block is subjected to post-treatment, and the MOFs mixed matrix membrane is obtained; the Zn source is a zinc ion type polymer. The method overcomes the problem of interfacial compatibility in mixed matrix membranes.

The invention discloses a high-solid-content MIL-101 (Fe) / PIM-1 mixed matrix membrane and a preparation method thereof, and belongs to the technical field of gas separation membranes. The preparation method comprises the following steps: firstly, dissolving an iron source in a PIM-1 polymer solution to form a homogeneous membrane casting solution; forming the obtained membrane casting solution, and removing the solvent to obtain a PIM-1 / Fe (II) composite substrate containing Fe (III); then, the substrate is alternately immersed in a terephthalic acid methanol solution and a ferric salt methanol solution, and MIL-101 (Fe) is generated in the polymer matrix through in-situ limited crystallization by layer-by-layer limited crystallization. According to the method, the problem of interfacial compatibility between the MOF filler and the polymer matrix is effectively solved, and high loading capacity (up to 52.9 wt.%) of MIL-101 (Fe) is realized without agglomeration. Meanwhile, the membrane has excellent COplasticizing resistance and long-term operation stability, and has a wide application prospect in the fields of carbon capture and the like.

The invention relates to the technical field of membrane separation materials, in particular to a mixed matrix membrane and a preparation method and application thereof. The mixed matrix membrane comprises: (1) a polymer functional membrane; (2) a base film for supporting the polymer functional film; a polymer in the polymer functional film comprises a polymer with a structure as shown in a formula (a), in the formula (a), R0 is an alkylene chain, R1 is a polysiloxane group, R2 is alkyl or hydrogen, and m is equal to 1-20. According to the present invention, the functional membrane prepared from the polymer having the structure (a) is used, and the structure of the polysiloxane is designed and optimized, such that the mixed matrix membrane has excellent organic solvent tolerance and organic solvent pervaporation separation property, and the interfacial compatibility between the polymer and the porous filler can be improved.

The invention discloses an MOF-808-CA-Me mixed matrix gas separation membrane as well as a preparation method and application of the MOF-808-CA-Me mixed matrix gas separation membrane. The preparation method comprises the following steps: preparing MOF-808 (Zr) by utilizing a solvothermal method, reacting with citric acid to graft carboxyl to obtain MOF-808-CA, reacting with melamine to obtain MOF-808-CA-Me, uniformly mixing with a Pebax1657 membrane casting solution, pouring on a base membrane, and obtaining a target membrane material by utilizing a solvent evaporation method. According to the method, an amido bond is formed through a reaction between-COOH of citric acid and-NH2 of melamine, and MOF-808-CA-Me is stabilized in the adsorption and desorption processes of carbon dioxide; the preparation process is simple, convenient and efficient, the cost is low, and the prepared MOF-808-CA-Me mixed matrix gas separation membrane has good selectivity to CO2 / CH4.

The invention discloses a mixed matrix membrane for efficient oxygen and nitrogen separation and a preparation method and application thereof. The mixed matrix membrane comprises a polymer continuous phase and an MOF filler uniformly dispersed in the polymer continuous phase, the MOF filler can separate nitrogen and oxygen, and the surface of the MOF filler is modified by the silane coupling agent, so that the MOF filler is well compatible with a polymer, and the oxygen-nitrogen separation effect is improved. The polymer solution and the MOF filler dispersion liquid are mixed, the mixed matrix membrane is prepared through the non-solvent induced phase separation method, and the method has the advantages of being simple in reaction condition, high in efficiency, easy to amplify and the like and has wide engineering prospects.

The invention relates to the technical field of geological exploration, in particular to a deep water ultra-shallow natural gas reservoir rock physical shear wave velocity prediction method, which comprises the following steps: calculating the equivalent bulk modulus, shear modulus and density of a mixed matrix of various minerals according to the shale content; calculating the bulk modulus and the shear modulus of the skeleton; calculating the bulk modulus and the shear modulus of the saturated rock through the model, and calculating the density of the saturated rock through the density of the rock matrix; distributing longitudinal and transverse velocities in a suspension state and a bearing state, and calculating equivalent longitudinal and transverse wave velocities; taking the longitudinal wave velocity as a known condition, and constructing an inversion objective function by using the equivalent longitudinal wave velocity; comparing the actual longitudinal wave speed with the calculated longitudinal wave speed; and realizing nonlinear inversion of the shear wave velocity according to an algorithm, and obtaining the shear wave velocity of the work area to be inverted. According to the method, rock physical models in a particle suspension state and a bearing state are considered at the same time, and shear wave velocity prediction and direct inversion of the shear wave velocity of the deepwater ultra-shallow natural gas reservoir are realized.

The invention discloses a ZnO / PES mixed matrix ultrafiltration membrane and a polyaniline-ZnO / PES mixed matrix nanofiltration membrane as well as a preparation method and an application of the ZnO / PES mixed matrix ultrafiltration membrane and the polyaniline-ZnO / PES mixed matrix nanofiltration membrane. PES is used as an organic polymer, PEG1500 is used as a pore-foaming agent, ZnO is used as a nano filler, and the ZnO / PES composite ultrafiltration membrane is prepared through a non-solvent induced phase inversion method. The preparation method comprises the following steps: synthesizing a polyaniline coated ZnO nano composite material, blending zinc nitrate hexahydrate in ammonia water with a polyaniline solution to form a nano composite structure, and preparing the polyaniline-ZnO / PES mixed matrix nanofiltration membrane by taking the synthesized nano composite particles as a filler. According to the mixed matrix membrane technology, alkali and lignin in the black liquor can be directly recovered, compared with alkali recovery through a combustion method, the mixed matrix membrane technology has the advantages of being easy to operate, not complex in process, low in investment cost, small in occupied area, low in energy consumption, good in environmental compatibility and the like, and meanwhile subsequent high-valued comprehensive utilization can be conducted on lignin.

The invention provides a method for in-situ preparation of a covalent organic framework mixed matrix membrane. The method mainly comprises the following steps: dissolving a film-forming polymer, a pore-forming agent and an aldehyde monomer in a solvent, stirring and heating to prepare a film casting solution; dissolving an amino monomer in water to prepare a coagulating bath; a glass plate is coated with the membrane casting solution to form a liquid membrane, the liquid membrane is immersed in a coagulating bath, in the process, macromolecules are separated out to form a membrane, and an amino monomer in the coagulating bath reacts with an aldehyde group monomer in the membrane casting solution to form an amorphous macromolecular network; and putting the membrane into a solvent added with a catalyst, and heating to obtain the covalent organic framework mixed matrix membrane. The method mainly has the advantages that the amido monomer and the aldehyde group monomer are respectively added into the coagulating bath and the membrane casting solution, so that the reaction process of the two monomers is matched with the precipitation process of the polymer matrix, and the synergistic reinforcement of the periodic nanopores of the covalent organic framework filler and the excellent membrane forming property of the polymer matrix is realized.

The invention discloses a gas separation mixed matrix membrane and a preparation method thereof, and belongs to the technical field of gas membrane separation. The mixed matrix membrane comprises a high polymer material matrix and a porous material, and through hydrogen-bond interaction formed by the high polymer material matrix and the porous material, the interfacial compatibility between a filler and the polymer matrix and the dispersity of the filler are remarkably enhanced; the pore material is used as a pore structure regulator, improves the chain accumulation mode of a polymer matrix and provides a selective gas separation window, and the gas screening capacity of the membrane is remarkably improved through the synergistic effect of the pore material and the pore structure regulator. The mixed matrix membrane is prepared by adopting a solution pouring method, the process is simple, the repeatability is high, large-area preparation is easy, the cost is low, the method is suitable for the fields of helium separation, hydrogen purification, natural gas purification, biogas purification and carbon capture, and the application prospect is wide.

The invention discloses a blind separation and time-frequency noise reduction combined comprehensive pulsar time establishing method. The method comprises the following steps: selecting a pulsar meeting a preset requirement; processing the timing residual error of the selected pulsar; establishing a mixed signal model, iteratively solving an anti-mixing matrix through an approximate negentropy contrast function, and separating independent components from the multi-dimensional features; carrying out Pearson correlation analysis on each separated independent component and reference time; and performing multi-scale decomposition on the selected common-mode clock difference signal by adopting a plurality of wavelet bases, and performing Bayesian soft threshold processing to obtain the final comprehensive pulsar time. According to the method, the long-term stability of the comprehensive pulsar is improved, the common problems of aliasing and modal mixing in a high-noise environment in the prior art are solved, and the extracted signal is more stable.

The invention discloses a method for preparing a mixed matrix proton exchange membrane with an ultrahigh filler ratio through electrostatic spraying. Preliminary dispersion of filler in membrane liquid is achieved through wet ball milling, the membrane liquid is stretched into nanoscale charged liquid drops at a spray head through the electrostatic field effect, the liquid drops achieve uniform dispersion of the filler in the space due to the charge repulsion effect, filler agglomeration can be avoided, and interface fusion can be enhanced; in the electrostatic spraying process, liquid drops fall on a roller shaft under the action of an electric field and are overlapped and fused into a film, so that the mechanical strength of the mixed matrix film can be effectively improved; the nanoscale liquid drops are overlapped on the roller and dried and volatilized to block holes, and the compact mixed matrix proton exchange membrane can be prepared in one step through in-situ densification. The compact mixed matrix membrane with ultrahigh filler loading capacity can be prepared in one step, the problems that an existing mixed matrix proton exchange membrane is low in filler ratio, poor in organic-inorganic compatibility, poor in mixed matrix membrane mechanical strength and the like are solved, the loading capacity of the filler in the membrane is greatly improved, and the preparation method is simple and easy for large-scale continuous production.

The invention belongs to the technical field of preparation of membrane materials and adsorption separation materials, and particularly relates to an MOFs / PVA cross-linked composite film as well as a preparation method and application thereof. The preparation method comprises the following steps: modifying MOFs with amino on the surface to enable the surface of the MOFs to have silicon hydroxyl, then mixing with polyvinyl alcohol (PVA), and heating and drying in a mold to obtain the MOFs / PVA cross-linked composite film. The cross-linked composite film provided by the invention is uniform and continuous, and the problem of poor dispersibility of the MOFs material in the mixed matrix film is solved. The film has good adsorption capacity on metal ions such as molybdate radicals, is high in hydrophilicity and still has a stable film structure in an acid environment, and an effective solution is provided for treatment of heavy metal pollution in industrial wastewater.

The invention belongs to the technical field of gas membrane separation, and discloses a preparation method of a fluorinated MOFs (Metal-Organic Frameworks) mixed matrix membrane for efficiently extracting hydrogen / helium from natural gas. CF3 is introduced into an MOFs framework to prepare fluorinated MOFs, and introduction of CF3 reduces the aperture of MOFs, enhances the molecular sieving effect, and improves the diffusion selectivity of H2 (He) / CH4. In addition,-CF3 has an inhibition effect on CH4 adsorption, and the dissolution selectivity of H2 (He) / CH4 separation is improved. The existence of-CF3 in the fluorinated MOFs can induce the MOFs and the polymer to form dipole-dipole interaction (C-F... O = C), so that the filler and the polymer have good interfacial compatibility, the improvement of the filler loading capacity is facilitated, and meanwhile, the generation of non-selective defects at an interface is avoided. The mixed matrix membrane prepared by the method has important significance in the field of high-efficiency hydrogen / helium extraction of natural gas.

The application provides a mixed matrix membrane for efficient ion separation and a preparation method thereof, and belongs to the technical field of separation membranes.The application mixes an aluminum salt and sodium hydroxide in an organic solvent, then adds a heterocyclic organic ligand containing nitrogen to obtain a MOF precursor solution; adds polyimide into the MOF precursor solution to obtain a casting solution; pours the casting solution into a mold and performs vacuum heating, then performs peeling, soaks in ethanol, and then performs drying to obtain the mixed matrix membrane for efficient ion separation.The application realizes uniform dispersion of MOF-303 in the whole matrix by controlling the MOF loading, and constructs continuous ion channels by the uniformly dispersed MOF-303 crystal structure, so that the selectivity of the membrane to monovalent ions is further improved.The operation is simple, and the cost is low.

The invention provides an XLPEO / MIL-TAPB-DMTP-COF mixed matrix membrane and a preparation method and application thereof.The preparation method includes the steps that a MIL-TAPB-DMTP-COF core-shell material is prepared through a double-ligand auxiliary synthesis strategy, the MIL-TAPB-DMTP-COF core-shell material is doped into a mixed solution of polyethylene glycol diacrylate and polyethylene glycol diacrylate to be evenly dispersed to form a membrane casting solution, the two PEO polymers are crosslinked through ultraviolet irradiation, and the XLPEO / MIL-TAPB-DMTP-COF mixed matrix membrane is obtained. And the XLPEO / MILat TAPB-DMTP-COF mixed matrix membrane is formed, and has good CO2 / N2 separation performance.

A MEMS gas sensor and a preparation method therefor, comprising an insulating substrate (1), a heating electrode (403), an insulating layer (105) and a testing unit, which are overlappingly disposed. The testing unit comprises a testing electrode, a sensing unit (2), and a selective separation membrane (3); the sensing unit (2) has a nanowire array structure formed by multiple nanowires disposed at intervals, and the selective separation membrane (3) covers the surface of the sensing unit and a recessed portion; the nanowires comprise a first metal and a second metal, the first metal being Pd, and the second metal being at least one selected from Ni, Cu, Ag, Au and Ir; the selective separation membrane (3) comprises an inner separation membrane (301) and an outer separation membrane (302) which are stacked in sequence; the inner separation membrane (301) comprises polytetrafluoroethylene, and the outer separation membrane (302) is a mixed matrix membrane having a covalent organic framework material as a filler and a polymer of intrinsic microporosity as a matrix. The MEMS gas sensor possesses excellent sensitivity for low-concentration gas monitoring, and tolerance stability for high-concentration gas, as well as excellent anti-interference performance and response speed.

The application relates to the technical field of film materials, in particular to a mixed matrix membrane and a preparation method and application thereof. Toluene is added into a viscous polyamine acid solution, the temperature is increased to 200-250 DEG C, and stirring reaction is carried out for 5-8 hours, then the precipitate is obtained through centrifugation, the precipitate is washed with methanol for 3-5 times, and the product COOH-PI is obtained through drying; zinc nitrate hexahydrate and 2-methyl imidazole are dissolved in methanol, stirring reaction is carried out at room temperature for 3-8 hours, then the product is taken out and centrifuged, the product is washed with anhydrous methanol for 3-5 times, and ZIF-8 is obtained through drying; NH2-ZIF-8 is synthesized by using the same method; COOH-PI is added into DMF and stirred to obtain a PI solution, ZIF-8 and NH2-ZIF-8 are respectively added into DMF, and MOF suspension is obtained through ultrasonic treatment for 2-5 hours, then the MOF suspension is added into the PI solution, stirring is carried out at room temperature for 24-36 hours, the casting solution obtained is poured into a flat and clean glass plate, heating is carried out at 60-65 DEG C for 24-48 hours, then the formed membrane is dried to obtain the mixed matrix membrane. The preparation condition of the mixed matrix membrane is mild, the stability of the membrane is obviously improved, and the mixed matrix membrane has high selective permeability to helium.

The invention discloses a preparation method and application of a layered column three-dimensional MOF enhanced mixed matrix membrane, and belongs to the technical field of pervaporation membrane separation. The preparation method comprises the following steps: firstly, dissolving a copper metal source and 2, 3, 6, 7, 10, 11-hexahydroxytribenzene in a solvent to obtain Cu < 2 + > and a deprotonated organic ligand, adding a pillar ligand bipyridine in situ, and co-coordinating the double ligand and Cu < 2 + > to generate a layered column three-dimensional MOF (Metal Organic Framework); and doping the layered column three-dimensional MOF into a polymer matrix to prepare a membrane casting solution, and coating the surface of a support body with the membrane casting solution to prepare the layered column three-dimensional MOF enhanced mixed matrix membrane. According to the invention, the pillar ligand dipyridyl provides a supporting effect for the three-dimensional MOF and constructs a three-dimensional pore channel at the same time; the affinity site of the three-dimensional MOF has conjugated pi-pi, hydrophobic and hydrogen bond interaction on the perfume; the three-dimensional MOF and a high-molecular polymer have excellent compatibility, and the mixed matrix membrane simultaneously has affinity of the three-dimensional MOF to 2-PE and hydrophobicity of a polymer matrix; the pervaporation membrane can be used for pervaporation membrane perfume separation.

The invention discloses a preparation method of a negative electricity microenvironment MOF (Metal Organic Framework) carbon capture material, the carbon capture material takes a Cu-AD-xF material with a negative electricity microenvironment as a filler and polyether block polyamide Pebax as a polymer matrix, and the carbon capture material is formed by physically blending the filler and the polymer matrix at normal temperature. The invention also discloses the negative electricity microenvironment MOF carbon capture material prepared by the preparation method and application thereof. The negative electricity microenvironment MOF carbon capture material can realize selective recognition of CO2 in a mixed matrix membrane, so that CO2 / CH4 mixed gas is effectively separated.

The invention discloses a method for improving methane production through low-temperature anaerobic digestion of sewage sludge, and relates to the technical field of solid waste resource utilization and renewable energy sources. The invention aims to solve the problem of low methane yield in the anaerobic digestion process of sewage sludge under a low-temperature condition. The method comprises the following steps: adding an inoculum and a culture medium into a reaction device, and fully stirring and mixing to obtain a mixed matrix; the inoculum is anaerobic digestion sludge, and the culture medium is sewage sludge which is subjected to heat treatment at 90-100 DEG C for 0.5-1 hour; and adding the biochar into the mixed matrix, and carrying out low-temperature anaerobic digestion to complete the improvement of the low-temperature anaerobic digestion methane production of the sewage sludge. The method for improving methane production through low-temperature anaerobic digestion of sewage sludge can be obtained.

The invention relates to an underdetermined blind source separation optimization method based on sensor signal correlation suppression. The method comprises the following steps: carrying out self-adaptive whitening processing on a measurement signal, and utilizing a dynamic covariance matrix reconstruction technology to greatly reduce the correlation between sensor signals, effectively compress the feature space dimension and reduce the coupling degree between acquired data. A clustering optimization framework based on L1 norm constraint is constructed, a sparse induction regularization strategy is introduced, and the source signal estimation precision is remarkably improved. Compared with a traditional method, the algorithm greatly improves the signal-to-noise ratio after the source signals are separated, so that clearer source signal representation is obtained. The method can adapt to the number of source signals and the uncertainty of a hybrid matrix, can reduce noise interference in the decoupling process, effectively extracts useful information from a complex signal environment, and provides effective technical support for system state monitoring, instrument fault diagnosis and the like.

The invention discloses a mixed matrix membrane based on defect MOF and a preparation method and application thereof, and the method comprises the following steps: (1) dissolving a hydroxyl-containing monodentate carboxyl organic ligand and 2-aminoterephthalic acid in a solvent A, stirring at room temperature, and carrying out ultrasonic treatment to obtain a mixed solution; then dropwise adding tetraisopropyl titanate into the mixed solution, and carrying out heating reaction in a reaction kettle; after the reaction is finished and cooling is carried out, a solid product is collected through centrifugation, washed and dried, and DN-MIL-125 is obtained; (2) dispersing DN-MIL-125 in a solvent B to obtain a DN-MIL-125 suspension, dissolving an intrinsic microporous polymer cPIM-1 in a solvent C to obtain a cPIM-1 solution, and then uniformly mixing the cPIM-1 solution with the DN-MIL-125 suspension to obtain a membrane casting solution; and carrying out defoaming treatment on the membrane casting solution, and forming a membrane by adopting a solution casting method to obtain the mixed matrix membrane DN-MIL-125 / cPIM-1. According to the method, the defective metal organic framework material DN-MIL-125 is added into the cPIM-1 intrinsic microporous polymer to prepare the mixed matrix membrane, and the separation performance of CO2 / N2 gas can be remarkably improved.

The invention discloses a gel type mixed matrix high-temperature proton exchange membrane based on metal organic framework loaded phosphoric acid and a preparation method of the gel type mixed matrix high-temperature proton exchange membrane, a membrane material is prepared by adding turbid liquid of a metal organic framework MIL-101 (Cr) and water into a polybenzimidazole solution to form gel state mixed liquid and then scraping the membrane; mIL-101 (Cr) and deionized water are mixed in advance to form a uniform suspension, the suspension is slowly added into a polybenzimidazole solution, the dispersity of the MIL-101 (Cr) in a PBI matrix is improved and agglomeration is inhibited by utilizing a hydrolysis reaction of polyphosphoric acid (PPA), and phosphoric acid loaded in a cavity of the MIL-101 (Cr) can provide an extra micro-nano space and a proton conduction path, so that the performance of the composite material is improved. The acid doping level and the proton conductivity of the membrane are improved.

The invention provides a preparation method of an ionic liquid assisted MOF-808 / PVDF (Polyvinylidene Fluoride) mixed matrix membrane, which comprises the following steps: blending MOF-808 particles and PVDF powder by using an organic solvent to prepare a primary blended solution; adding an ionic liquid as an auxiliary solvent into the primary blended solution, continuously stirring for 12-48 hours until a uniformly mixed membrane casting solution is formed, and standing to remove bubbles; pouring the membrane casting solution on a glass plate, and immersing the glass plate in a deionized water bath to form a mixed matrix membrane; taking out the mixed matrix membrane, immersing the mixed matrix membrane in deionized water, changing water, taking out the mixed matrix membrane, and naturally airing at room temperature to prepare the ionic liquid assisted MOF-808 / PVDF mixed matrix membrane. The invention provides an ionic liquid assisted MOF-808 / PVDF (Polyvinylidene Fluoride) mixed matrix membrane. The mixed matrix membrane has the advantages of high flux, high interception effect, photocatalytic self-cleaning capability and high reusability.

The invention discloses an interface in-situ assembled gel and nanoparticle composite polyether sulfone membrane as well as preparation and application thereof, and belongs to the technical field of nano material and membrane separation. According to the invention, a gel and nanoparticle composite structure is constructed in situ on the surface of the membrane and in pores through a phase separation strategy for the first time, a gel layer of a main body is formed by crosslinking polyphenol and zirconium oxychloride, and nanoparticles are formed by complexing unoccupied sites of polyethyleneimine and polyphenol; a nucleation site is provided for in-situ construction of the gel layer on the surface. Compared with a surface modification post-treatment method, the method disclosed by the invention has the advantages of process integration, coating stability and the like; compared with a mixed matrix membrane constructed by zeolite and carbon nanotubes, agglomeration and polymer embedding are avoided, and a coating constructed by mixing hydrophilic gel and nanospheres can be formed on the surface of the polymer.

The invention relates to a fully-hydrophobic ultrahigh-loading MOF (Metal Organic Framework) mixed matrix membrane as well as a preparation method and application thereof, and belongs to the technical field of membrane separation. The preparation method comprises the following steps: heating and melting a large-size hydrophobic MOF material, a high-molecular polymer and paraffin oil, molding through a high-temperature roller-to-roller hot pressing process to prepare a membrane material with the loading capacity of 92% or above and a multi-stage rough surface, and finally carrying out hydrophobic and oleophobic performance treatment through fluorosilane. The obtained mixed matrix membrane material has high flux and excellent anti-pollution and anti-infiltration capabilities, and is suitable for efficient desalination of complex wastewater.

The present application relates to the technical field of surface treatment, in particular to a kind of biobased degradable cable material and preparation method thereof.Biobased degradable cable material includes 55-65 parts of poly-L-lactic acid and poly-3-hydroxybutyric acid-3-hydroxyhexanoate mixed matrix resin, 4-6 parts of dianhydride modified castor oil polyol, 10-15 parts of polyaminoval, 5-8 parts of nano enhanced filler, 6-10 parts of biobased plasticizer, 0.5-1.0 parts of antioxidant, 8-12 parts of environmentally friendly flame retardant.Dynamic ester bond crosslinking agent dianhydride modified castor oil polyol reaction forms dynamic ester bond crosslinking network, ester bond breakage occurs at high temperature beyond normal working range to release stress, temperature returns to normal and can recombine again;Semi-interpenetrating network enhanced phase polyaminoval forms interpenetrating structure with matrix resin in molecular chain interlacing mode, constructs stable heat-resistant skeleton, effectively inhibits high-temperature deformation, and its biobased structure ensures the overall degradability of the material, realizes the balance of heat resistance and degradability.

The invention relates to a membrane material, in particular to a mixed matrix membrane with high filler loading capacity and a preparation method thereof. According to the invention, the MOF particle modification layer polymer and the film-forming polymer both adopt PIM-1, so that the interface energy is reduced, and the compatibility between the filler and the film layer is improved, thereby greatly increasing the filler loading capacity in the film-forming polymer.