14results about How to "Reduce hydrophilicity" patented technology

The application belongs to the technical field of ship exhaust purification, and particularly relates to a catalyst for decomposing N2O in the exhaust of a ship ammonia internal combustion engine and a preparation method thereof. 3+ By replacing Co ions in the Co3O4 spinel lattice into the lattice, the doping behavior can effectively reduce the number of hydroxyl groups on the surface of the catalyst, significantly weaken the adsorption and combination ability of water molecules, and thus improve the stability of the catalyst in a high-humidity exhaust environment. As an additive, CeO2 uses its oxygen storage capacity to promote the migration and desorption of oxygen species in the reaction, preventing the deactivation of active sites due to oxygen poisoning. The molecular sieve carrier not only provides a highly dispersed surface for the active component to prevent sintering, but also optimizes the adsorption and activation path of N2O and alleviates the poisoning effect of nitrogen-containing intermediate species or impurities in the exhaust on the Co active center during the reaction.

The invention relates to the technical field of immunity, in particular to a nano antibody specifically combined with CD276 and application of the nano antibody. The preparation method comprises the following steps: immunizing alpaca by adopting human CD276 antigen protein to obtain peripheral blood PBMC (peripheral blood mononuclear cell), then calling a nano antibody gene, establishing a phage library, finally obtaining an antibody sequence with relatively high antigen affinity respectively through a single B cell antibody screening technology and a phage library screening technology, and then applying the found antibody sequence to CAR-T to obtain a CAR-T antibody sequence with relatively high antigen affinity. Animal in-vivo and in-vitro drug effects show that the obtained antibody sequence is suitable for various solid tumor indications and has a remarkable anti-tumor effect on lung cancer, colorectal cancer and pancreatic cancer. The antibody sequence can be applied to development of antibody drugs, cell therapy drugs, ADC drugs and the like.

The embodiment of the invention provides an aerosol generating medium section, a preparation method thereof and an aerosol generating product. The preparation method of the aerosol generating medium section comprises the following steps: preparing slurry, wherein the slurry comprises a base material and fuming medium gel; carrying out tape casting on the slurry to form a sheet-shaped substrate; winding the sheet matrix to form a winding structure; the wound structure is cut to form aerosol-generating media segments. According to the aerosol generating medium section and the preparation method thereof, the aerosol generating product contains the fuming medium gel, and the fuming medium in the fuming medium gel is located in the meshes of the three-dimensional network structure, so that the intermolecular acting force of the fuming medium is improved, the hydrophilic capacity of the fuming medium is reduced, and the fuming effect is improved. And the possibility that the fuming medium is damped and mildewed during the storage period of the aerosol generating medium section can be reduced.

The invention discloses a bio-based core-shell structure flame retardant and an application thereof in a bio-based plate. According to the invention, a phosphorus-carbon synergistic flame-retardant core-shell structure flame retardant is developed by taking a phosphorus-containing halogen-free flame retardant as a core and carrying out free radical copolymerization reaction on a furfuryl alcohol (FA) derivative containing phosphorus in different oxidation states and bismaleimide (BMI) with a charring function to form a cross-linked flame-retardant macromolecular shell layer. The core-shell flame retardant is proportionally mixed with crushed materials of a biological base material and an adhesive, and the mixture is subjected to hot press molding to obtain the flame-retardant biological base material. The flame retardant provided by the invention not only can endow a biological base material with good flame retardance and mechanical properties, but also can solve the problem of long-term durability of the biological base material.

The application discloses a kind of corrosion-resistant wear-resistant self-cleaning heat insulation tile surface diaphragm material and preparation method thereof;Preparation raw materials of heat insulation tile surface diaphragm material include the following components: polyether ether ketone fine powder 100 parts, polytetrafluoroethylene fine powder 10-20 parts, glass fiber 20-40 parts, modified silica aerogel powder 5-10 parts, crystallization nucleating agent 0.1-1 parts, lubricating aid 0.1-1 parts.This heat insulation tile surface diaphragm material, with polyether ether ketone as matrix material, polyether ether ketone has excellent temperature resistance, wear resistance, chemical corrosion resistance, ultraviolet resistance and self-lubricating property, at the same time, polytetrafluoroethylene fine powder is introduced into polyether ether ketone matrix, further improving the wear resistance of diaphragm material;At the same time, polytetrafluoroethylene also reduces the hydrophilicity of diaphragm material, and the introduced modified silica aerogel material surface is subjected to hydrophobic treatment;Both synergistic effect, construct hydrophobic micro-nano structure in diaphragm, give heat insulation tile surface good self-cleaning performance.

This invention relates to the field of anode materials, specifically to an antimony-based anode material, its preparation method, and a lithium-ion battery. The method involves preparing Schiff base-functionalized carbon quantum dots by adding a phosphorus source, an antimony source, and the Schiff base-functionalized carbon quantum dots to a reaction solvent, followed by a solvothermal reaction. This antimony-based anode material achieves a synergistic improvement in high specific capacity, long cycle life, excellent rate performance, and high structural stability, making it a highly promising anode material for lithium batteries, particularly suitable for high-energy-density, long-life lithium-ion batteries.

The application provides a high-temperature and high-humidity resistant epoxy magnetic circuit adhesive and a preparation method thereof. The adhesive comprises the following raw materials: bisphenol type epoxy resin, tetra-functional silicon-based epoxy resin with a structure as shown in formula I, toughening agent, mercaptan curing agent, latent curing accelerator, filler, tackifier and thixotropic agent. The tetra-functional silicon-based epoxy resin with a structure as shown in formula I is used to replace part of the bisphenol type epoxy resin, which can improve the crosslinking density of the magnetic circuit adhesive and the heat resistance, and reduce the hydrophilicity of the magnetic circuit adhesive, so that the magnetic circuit adhesive is not easy to soften in a high-temperature and high-humidity environment, and the durability is improved. The inventors find that the tetra-functional silicon-based epoxy resin with a structure as shown in formula I and the polysulfide rubber toughening agent have a synergistic effect of improving the anti-shock and anti-falling performance of the magnetic circuit adhesive.

The application discloses a kind of hydroxyl aluminum oxide-based alkaline electrolytic water composite diaphragm and preparation method thereof, belong to alkaline electrolytic water hydrogen production diaphragm technical field.The composite diaphragm includes polysulfone resin matrix and the hydroxyl aluminum oxide filler dispersed therein, the mass of hydroxyl aluminum oxide is not more than 80% of the mass of polysulfone resin;Its preparation method includes: polysulfone resin is mixed with pore former in organic solvent to form polymer solution, after adding hydroxyl aluminum oxide powder and uniformly dispersing, defoaming to obtain casting solution, by blade casting, phase inversion, washing, drying to obtain composite diaphragm;The application replaces traditional ZrO2 filler with hydroxyl aluminum oxide, raw material cost is greatly reduced, and at the same time, the characteristics of the surface of hydroxyl aluminum oxide are rich in hydroxyl, which endows the diaphragm with excellent intrinsic hydrophilicity, and the hydrophilic network constructed effectively reduces the surface resistance, solving the technical problems of high cost of ZrO2-based composite diaphragm in the prior art and the long-term deficiency of traditional hydrophilic modification.

The invention discloses a hollow fiber hemodialysis membrane based on in-situ self-assembly and a preparation method thereof. According to the membrane, PES is used as a matrix, PES, PVP and SF are co-dissolved in a N, N-dimethylacetamide DMAc solvent according to a specific proportion, and dry-wet spinning and an accurate non-solvent induced phase separation regulation technology are adopted, so that the silk fibroin and PVP have a synergistic effect in the phase inversion process, and the membrane is prepared. And multi-stage microphase separation and self-assembly are carried out, so that in-situ and lasting anchoring on the membrane substrate and the surface is realized. The dialysis membrane prepared by the method has excellent long-acting pollution resistance, excellent blood compatibility and a stable three-dimensional gradient structure. The invention further provides an intelligent response type expansion scheme of the membrane, and the membrane can dynamically adjust the performance according to the physiological state of a patient by introducing an environment response component, so that individualized precise dialysis is realized.

A long-lasting antifouling polyamide reverse osmosis membrane, its preparation method, and its applications are disclosed, belonging to the field of membrane separation technology. The membrane comprises a porous support layer and a polyamide selective layer on its surface. The polyamide selective layer is covalently grafted with monoamine-terminated hyperbranched polyglycerol. The monoamine-terminated hyperbranched polyglycerol is grafted into the polyamide network through the reaction of its terminal primary amine groups with acyl chloride monomers during interfacial polymerization. This enriches the multi-hydroxyl branched structure of the hyperbranched polyglycerol on the membrane surface, forming a stable hydrophilic antifouling structure. The aforementioned long-lasting antifouling polyamide reverse osmosis membrane, its preparation method, and its applications result in a membrane with long-lasting and stable antifouling performance, strong hydrophilicity, and a simple preparation process, making it easy to industrialize.

The application discloses a kind of high lyophobic polystyrene material and preparation method thereof, including following weight parts of each component: polystyrene 100 parts;Anti-antigen collection liquid lyophobic agent 0.5-2 parts;Titanium dioxide 0.3-5 parts.The preparation method of high lyophobic polystyrene material disclosed in the application includes the following steps: S1, according to weight ratio, each component is weighed: high impact polystyrene (HIPS) 100 parts;Collection liquid lyophobic agent 0.5-5 parts;Titanium dioxide 0.3-5 parts;S2, after each component in step S1 is fully mixed, it is extruded by double screw extruder and granulated to obtain the high lyophobic polystyrene material.

The invention discloses a preparation method of a high-stability natural plant extract bio-based paint, and relates to the technical field of paints.The preparation method comprises the following steps that 1, raw material modification is conducted, specifically, corn starch, deionized water and NaOH are mixed and gelatinized according to the mass ratio of 30: (100-110): (1-1.2) to obtain starch paste liquid, then the starch paste liquid and a graft are subjected to end sealing and grafting treatment, and modified starch emulsion is obtained; step 2, composite treatment: uniformly mixing and stirring the modified starch emulsion and the water-based alkyd resin emulsion in a mass ratio of 7: (2.9-3.1), then adding a nano cellulose whisker dispersion liquid accounting for 2-2.1 wt% of the total mass and tween-80 in a mass ratio of corn starch to the nano cellulose whisker dispersion liquid being 30: (1.1-1.2), and then stirring and mixing to obtain a dispersed composite emulsion; step 3, mixing and preparing to obtain a bio-based coating; wherein the graft is a lignosulfonate graft copolymer solution; the water-based alkyd resin emulsion is obtained by performing alcoholysis and polycondensation on soybean oil. The high-stability natural plant extract bio-based coating has the effect of improving the structural stability of the high-stability natural plant extract bio-based coating.

The invention discloses a hydrophobic anti-sintering indium oxide catalyst as well as a preparation method and application thereof, and belongs to the technical field of carbon dioxide hydrogenation catalysts. The hydrophobic anti-sintering indium oxide catalyst provided by the invention comprises an indium oxide catalyst carrier and a silane layer bonded on the surface of the indium oxide catalyst carrier, wherein the silane layer is formed by reacting a silane compound with hydroxyl on the surface of the indium oxide catalyst; based on the total mass of the hydrophobic anti-sintering indium oxide catalyst, the mass fraction of a silicon element in silane is 0.5-0.9 wt%. The silane is chemically bonded on the surface of the indium oxide carrier, so that sintering and grain growth of indium oxide nanoparticles under a high-temperature reaction condition are remarkably inhibited on the premise of not changing an active crystal phase of the indium oxide carrier, and the adaptability of the catalyst under a harsh working condition of a water-containing product is remarkably improved.

The invention discloses an underwater tissue binding material as well as a preparation method and application thereof, and relates to the technical field of biomedical materials. The underwater tissue adhesive material comprises the following components: (1) dopamine modified methacrylated hyaluronic acid (HAMA-DOPA), and (2) a crosslinking agent, (2) preparing methacrylated hyaluronic acid (HAMA-PBA) modified by phenylboronic acid; (3) polyvinyl alcohol (PVA); (4) a photoinitiator, which is used for initiating a copolymerization reaction of methacryloyl groups in the HAMA-DOPA and the HAMA-PBA under the irradiation of visible light so as to form a covalent cross-linked network; the weight ratio of the dopamine modified methacrylated hyaluronic acid to the phenylboronic acid modified methacrylated hyaluronic acid to the polyvinyl alcohol to the photoinitiator is (2 to 5) to (1 to 3) to (1 to 3) to (0.1 to 0.25). The hydrogel has the advantages of excellent underwater stability, fast and controllable curing process, strong underwater bonding strength and good biocompatibility, and is especially suitable for repairing sensitive tissues such as retina and the like.