44results about How to "Reduce hydrophilicity" patented technology

The invention discloses a preparation method of a bio-based epoxy resin anticorrosive coating, and relates to a preparation method of a bio-based epoxy resin coating. The bio-based epoxy resin anticorrosive paint mainly comprises an anticorrosive filler COFs-AA, bio-based epoxy resin and a curing agent. Wherein the anticorrosive filler COFs-AA is prepared from a two-dimensional covalent organic framework COFs and a bio-based material arachidonic acid (AA) through a covalent condensation reaction; the bio-based epoxy resin is prepared by epoxidizing a bio-based material galangin serving as a raw material through epichlorohydrin, and the curing agent is a common curing agent for epoxy resin. The bio-based epoxy resin anticorrosive paint is compounded by taking biomass as a basic component, and has the characteristics of greenness, environmental protection, no toxicity, good hydrophobicity and good corrosion resistance; the bio-based epoxy resin anticorrosive paint can be applied to the field of corrosion protection of materials such as various metals and woodware.

The invention discloses polyurethane resin with a super-hydrophobic surface and a preparation method of the polyurethane resin, and belongs to the technical field of modified polyurethane materials. According to the invention, 2, 2 '-diallyl bisphenol A and a fluorine-containing thiol monomer react to introduce a fluorine-containing carbon chain, and then fluorinated modified 2, 2'-diallyl bisphenol A and tetramethoxysilane are used for treating nano zinc oxide, so that the content of active oxygen groups is reduced, a siloxane network structure is formed, the action with water molecules is reduced, and the hydrophobicity is improved. Secondly, the 2, 2 '-diallyl bisphenol A reacts with amino propyl isobutyl POSS to generate a benzoxazine structure, the POSS structure is introduced, the nano-size effect of the benzoxazine structure fills limited movement between molecular chains, a cage-shaped structure serves as a cross-linking point, the mechanical property is improved, and hydrophobicity is achieved. When polyurethane is prepared, 3, 3-bis (hydroxymethyl) azetidine and a benzoxazine structure are subjected to ring opening crosslinking, bonding, dispersity and stability of fluorinated modified nanoparticles and a matrix are enhanced, a complex network structure is formed, the surface roughness is increased, the water contact area is reduced, and super-hydrophobicity is achieved.

The invention relates to the technical field of lithium ion batteries, and discloses a diaphragm binder capable of resisting heat of more than 180 DEG C as well as a preparation method and application of the diaphragm binder. The diaphragm binder disclosed by the invention is prepared from the following components in parts by weight: 40 to 42 parts of acrylic acid, 100 to 110 parts of acrylamide, 30 to 32 parts of a soft monomer, 20 to 22 parts of a hydrophobic monomer, 10 to 12 parts of a self-crosslinking monomer, 0.2 to 0.25 part of an initiator, 20 to 22 parts of sodium hydroxide and 800 to 900 parts of deionized water. The heat-resistant diaphragm binder disclosed by the invention is good in heat resistance, capable of being cured at low temperature, good in adhesive force, low in moisture content, simple in preparation method, green and environment-friendly in raw material, and good in application prospect in preparation of lithium ion battery diaphragms.

The invention belongs to the technical field of coatings, and particularly relates to a water-based single-component coating for containers and a preparation method thereof.The water-based single-component coating for containers comprises, by weight, 15-20 parts of water, 40-45 parts of water-based acrylic silicon resin, 15-20 parts of modified water-based acrylic resin, 8-13 parts of modified water-based epoxy resin and 10-15 parts of anti-rust pigment. The coating is prepared from, by weight, 10-15 parts of coloring pigment, 10-15 parts of modified filler, 3-5 parts of cosolvent and 3-5 parts of auxiliaries. The coating is excellent in comprehensive performance and can be used as a coating for containers.

The invention provides a preparation method of a water-soluble film, which comprises the following steps: S1, blending polyvinyl alcohol and isobutyric acid, adding into a solvent, and heating to react under the catalysis of concentrated sulfuric acid to generate an ester system; s2, adding polyethylene glycol and a surfactant into the ester system, and uniformly stirring to obtain a blend; s3, adding an auxiliary agent into the saturated sodium sulfate solution to obtain a coagulating bath solution, and spraying the blend into the coagulating bath solution in a high-pressure nitrogen spinning manner by adopting a wet spinning technology; and S4, after the filaments are separated out, drawing with external force, washing and drying to obtain the water-soluble film. Wherein the mass ratio of the polyvinyl alcohol to the isobutyric acid is 1: (0.01-0.05). The water-soluble film disclosed by the invention can be dissolved in water at a stable speed, so that the problems of large fluctuation and mutation of the dissolution speed are avoided, meanwhile, the coated content is endowed with a slow release function, the problems in the prior art are solved, and the water-soluble film has a good application prospect.

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.

Disclosed is an in vitro diagnostic chip having multiple levels of hydrophilicity, which differentially controls the flow rates of a liquid sample and thus enables the liquid sample to be evenly distributed all the way to corner or edge regions of a reaction space. The in vitro diagnostic chip having multiple levels of hydrophilicity comprises: a well array comprising a plurality of wells; and a multi- hydrophilic coating layer coated on the well array and controlling the flow rates of a sample so as to be mutually different. The hydrophilic coating layer is formed on the well array so as to have high hydrophilicity in accordance with the center region of the well array, and to have low hydrophilicity in accordance with the peripheral region of the well array, and thus the formation of an air pocket in the reaction space may be blocked. Accordingly, the occurrence of an error caused by the air pocket in a PCR test result may be prevented.

The invention belongs to the technical field of hydrogel, and mainly relates to preparation and application of hydrogel with a doughnut structure. The invention aims to solve the problem that the existing seawater desalination material based on hydrogel is insufficient in recyclability. The preparation method comprises the following steps: mixing ZrOCl2. 8H2O and fumaric acid, and performing ultrasonic dispersion on the mixture and a multi-walled carbon nanotube to obtain a pretreated precursor; carrying out hydrothermal treatment on the pretreated precursor, and modifying the pretreated precursor with acryloyl chloride to obtain modified MOF801 (at) CNT; the modified MOF801-coated CNT, polyvinyl alcohol, cassava starch and a cross-linking agent are subjected to thermosensitive cross-linking treatment, and the hydrogel with the doughnut structure is obtained. The hydrogel has high application value in the field of seawater desalination, has self-adjustability of temperature response, is high in evaporation efficiency, can be recycled, and can efficiently desalinate seawater with different temperatures and components.

The invention belongs to the technical field of lampshade materials of automobile atmosphere lamps, and discloses a chemical-resistant photodiffusion polycarbonate material for a CL process and a preparation method of the chemical-resistant photodiffusion polycarbonate material. Comprising the following raw materials in parts by weight: 75-95 parts of polycarbonate, 30-50 parts of bio-based polycarbonate, 1-5 parts of an acrylate and polycarbonate copolymer, 0.1-1 part of an ester exchange inhibitor, 0.1-0.5 part of an antioxidant, 0.1-0.5 part of a lubricant, 0.5-1.5 parts of a light diffusion agent, 1-3 parts of nano silicon dioxide and 0.5-2 parts of benzophenone. By adding the acrylate and polycarbonate copolymer, the photodiffusion polycarbonate material can effectively resist corrosion of chemical solvents, so that the anti-cracking performance of the material in a chemical environment is enhanced, meanwhile, bio-based polycarbonate has relatively good chemical stability in a molecular structure, and the photodiffusion performance of the material is improved. And the chemical resistance of the light diffusion polycarbonate material is further enhanced through the addition of the light diffusion polycarbonate material, so that the material is slightly influenced when being processed by a CL process, and the product quality is improved.

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 invention relates to the technical field of oilfield chemistry, in particular to hydrophobicity-controllable nano silicon dioxide and preparation and application thereof.The hydrophobicity-controllable nano silicon dioxide is prepared according to the following steps that firstly, the required amount of nano silicon dioxide and a solvent are added into a first reactor, and ultrasonic dispersion is conducted; 2, adding a required amount of a solvent, a hydrophobic modifier and a hydrophilic modifier into a second reactor, sealing the second reactor, and stirring at normal temperature to obtain a modifier mixed solution; and 3, adding hydrochloric acid into the first reactor at the required temperature to adjust the pH value, adding the modifier mixed solution into the first reactor, stirring and reacting for 10-15 hours, and centrifuging, washing, drying and grinding the reaction product to obtain the hydrophobic controllable nano silicon dioxide. The number of hydrophilic groups and hydrophobic groups is quantitatively controlled on the surface of the nano silicon dioxide, so that the nano silicon dioxide can be dispersed in an oil phase and can suspend a high-molecular compound, and meanwhile, the dispersing performance of the nano silicon dioxide is improved.

The present invention belongs to the field of chemical application, and specifically relates to a type of halogen-free water-soluble long-chain imidazoline corrosion inhibitor containing a carboxylate structure, and a preparation method and application thereof. The preparation method is to synthesize a long-chain imidazoline using a long-chain organic acid and diethylenetriamine as raw materials, react the long-chain imidazoline with citric anhydride, and then adjust the pH with an alkaline solution to obtain a halogen-free water-soluble long-chain imidazoline corrosion inhibitor containing a carboxylate structure. The corrosion inhibitor is characterized by good dispersibility in water. After being adsorbed on a metal, the carboxylate is converted into a carboxyl group in an acidic environment, so that the hydrophilicity of the corrosion inhibitor film is weakened, and it is not easy to fall off in an aqueous corrosive medium, thereby achieving a long-term corrosion inhibition effect.

The invention discloses a polygonatum polysaccharide hydrogel preparation of dihydromyricetin. In the preparation process of the polygonatum polysaccharide hydrogel preparation of dihydromyricetin, polygonatum polysaccharide is used as an adhesive, food-grade low-molecular organic acid is used as a pH regulator and a preservative, and a food-grade calcium chloride ion cross-linking agent is used as a gel structure control agent. The polygonatum sibiricum polysaccharide hydrogel of dihydromyricetin prepared by the invention is a good sustained-release preparation, has better hydrophilic effect, gastrointestinal stability effect, permeability effect and sustained-release effect on dihydromyricetin, and enhances the bioavailability of dihydromyricetin. Meanwhile, the natural bioactive substance, namely, the dihydroxyenzyme, has the characteristics of low side effect and easiness in obtaining, so that the implementation of the invention is of great significance to the development of chronic disease targeted drugs and the prevention and treatment of chronic diseases in the future by the dihydroxyenzyme.

The invention relates to an antistatic and anti-wrinkle treating agent for paper printing and a using method thereof, and relates to the technical field of paper printing. The antistatic and anti-wrinkle treating agent for paper printing is prepared from the following raw materials in parts by mass: 5 to 15 parts of polyvinyl alcohol, 10 to 15 parts of silicone oil, 15 to 25 parts of acrylate emulsion, 5 to 10 parts of nano silicon dioxide, 0.5 to 1 part of antioxidant, 0.5 to 1 part of mildew preventive and 40 to 60 parts of deionized water. The application ensures that the paper has multiple properties, thereby having the effect of improving the applicability of the paper.

The application relates to a preparation method and application of a negative electrode material, and comprises the following steps: (1) under a protective atmosphere, heating reaction is carried out on silicon carbide nanoparticles and a silane coupling agent containing amino groups in the presence of a solvent to obtain amino-modified silicon carbide nanoparticles; after bitumen is heated and melted, an acid anhydride monomer and an initiator are added to carry out a first stirring reaction to obtain an acid anhydride bitumen melt; (2) the amino-modified silicon carbide nanoparticles are added into the acid anhydride bitumen melt to carry out a second stirring reaction, and after reaction, cooling and crushing, amino-modified nano silicon carbide bitumen powder is obtained; (3) graphite is uniformly mixed with the amino-modified nano silicon carbide bitumen powder, and carbonization treatment is carried out to obtain the negative electrode material. The carbon-coated layer of the negative electrode material prepared by the above method is uniformly doped with silicon carbide nanoparticles, which can effectively reduce the full-charging expansion of a negative electrode sheet and improve the cycle performance of a battery.

The invention relates to the technical field of building decoration, in particular to light multifunctional stone-like paint and a production process thereof. The light multifunctional stone-like paint is specifically prepared from the following components in parts by mass: 60 to 100 parts of modified emulsion, 40 to 60 parts of red rubber emulsion, 50 to 80 parts of active filler, 1 to 3 parts of hydroxyethyl cellulose, 8 to 15 parts of an anti-freezing agent, 4 to 8 parts of a coalescing agent, 1 to 3 parts of a preservative, 1 to 2 parts of a pH regulator, 450 to 650 parts of natural colored sand, 1 to 2 parts of a thickening agent and 100 to 200 parts of deionized water. And the prepared stone-like paint has excellent waterproof performance, heat insulation performance and aging resistance, is convenient to construct and simple in process, greatly reduces the production cost, and has practical significance and popularization value.

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 degradable luminous bionic bait and a preparation method thereof, belongs to the technical field of bionic bait materials, and aims to solve the technical problems that bionic bait in the prior art is poor in degradability and needs to be improved in water resistance and corrosion resistance. The method comprises the following steps that 100-120 parts of modified polyhydroxybutyrate, 20-30 parts of a stabilizer, 3-4 parts of a toughening agent, 1-2 parts of a phagostimulant, 0.8-1 part of a lubricating agent and 0.1-0.5 part of an antioxidant are put into a three-dimensional turbine mixer to be stirred for 3-5 h. According to the method, a bionic bait base body containing the modified polyhydroxybutyrate is subjected to sand blasting finishing through explosion spraying of a modified phosphorescent coating liquid material; through interaction of the two materials, the bionic bait has high biodegradability, water resistance, corrosion resistance and mechanical property stability, and the service life of the bionic bait is prolonged.

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.

The invention provides block polyether and block polyether ester, a preparation method thereof, cutting fluid and application. 100 parts by mass of the cutting fluid comprises the following components: 5-30 parts of a lubricant; 1-30 parts of a wetting agent; 1 to 10 parts of a solubilizer; and the balance of deionized water. Wherein the lubricant comprises block polyether ester; the wetting agent comprises alcohol polyoxyalkylene ether; the solubilizer comprises at least one of polyhydric alcohol and phenoxy alcohol. According to the cutting fluid formula, polyether ester is introduced to replace polyether and is matched with the wetting agent, the lubricating performance of the formula can be effectively improved, and the cutting fluid has the characteristics of low foam, high defoaming rate and low surface tension, so that the use amount of the lubricating agent and the wetting agent can be reduced, and the goal of low COD value is achieved.

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.

A particulate sampling method according to the present invention collects particulates contained in air flowing therethrough, using: a cylindrical first electrode (22) having both ends open in the axial direction thereof; and a second electrode (24) extending in the axial direction of the first electrode (22) and disposed inside the first electrode (22) at a distance from the inner surface of the first electrode (22). When the microparticles are collected, a first liquid (67) containing an amphiphilic polymer is supplied into the first electrode (22), after the amphiphilic polymer is brought into contact with the inner surface of the first electrode (22), a second liquid (68) not containing the amphiphilic polymer is supplied, and the microparticles contained in the air flowing therethrough are collected in the second liquid (68).

The invention provides a low-solid-phase strong-inhibition calcium salt drilling fluid. Compared with the prior art, the low-solid-phase strong-inhibition calcium-based drilling fluid provided by the invention has the advantages that carbonate radicals and bicarbonate radicals can be neutralized in an alkaline environment through calcium ions Ca < 2 + >, so that the stability of the rheological property of the drilling fluid is ensured; meanwhile, Ca < 2 + > and clay particles generate an irreversible absorption effect, hydrated calcium silicate is formed on the surfaces of the clay particles, and ion exchange and adsorption both reduce the hydrophilicity and dispersity of the clay particles, so that hydration dispersion of the shale is inhibited, the content of bentonite in the system is low, the content of solid phases is low, the viscosity and the shearing force are relatively low, and the stability of the shale is improved. The drilling fluid has the function of containing a large amount of low-density solid phase capacity, good and stable rheological property of the drilling fluid can be ensured, the drilling fluid has strong inhibition and anti-sloughing functions, and the filter loss can be effectively controlled.

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 relates to the technical field of battery materials, in particular to a hydrophobic aramid fiber coating liquid for a lithium ion battery, a coating diaphragm and a preparation method of the hydrophobic aramid fiber coating liquid for the lithium ion battery, and the preparation method comprises the following steps: carrying out condensation polymerization on a biphenyl ring aromatic diamine monomer and isophthaloyl dichloride in an organic solvent, neutralizing and defoaming to obtain a DPMIA polymer liquid; the preparation method comprises the following steps: carrying out condensation polymerization on an m-phenylenediamine monomer and isophthaloyl dichloride in an organic solvent, neutralizing and defoaming to obtain a PMIA polymer solution; and mixing the DPMIA polymerization liquid and the PMIA polymerization liquid, and adding an organic solvent for dilution to obtain the coating liquid. And uniformly coating a base membrane with the coating liquid, carrying out coagulating bath forming, washing with water, drying, sizing and rolling to prepare the hydrophobic aramid fiber coated diaphragm. The coating liquid can greatly reduce the off-machine moisture of a coated diaphragm, accelerate the on-machine coating speed of aramid fibers, reduce the drying temperature of a drying section, shorten the drying time, reduce the energy consumption and simultaneously show the advantage of low-temperature discharge.

The invention discloses a method for preparing MHP from laterite-nickel ore by using active magnesium oxide and recycling tail water, which comprises the following steps: carrying out high-pressure acid leaching treatment on the laterite-nickel ore, removing iron and aluminum to obtain a solution to be refined, adding a certain amount of active magnesium oxide, and fully reacting; concentrating the reacted mixed solution to obtain clear liquid and solid-containing slurry; the solid-containing slurry is filtered and washed to obtain MHP, clear liquid and filtrate, after water washing liquid is collected, a certain amount of tail water treatment reagent is added, the filtrate is filtered after reaction, the filtrate is recycled as acid leaching water or washing water, magnesium and calcium-containing solid residues obtained after tail water treatment are subjected to reselection to separate out by-products of calcium sulfate and magnesium hydroxide, and magnesium hydroxide is calcined to obtain active magnesium oxide; further, the method is used for preparing the MHP. The method for preparing the MHP from the laterite-nickel ore by using the active magnesium oxide and recycling the tail water is simple in process and low in cost, the production efficiency can be remarkably improved, and recycling of magnesium resources and water resources is achieved.

The invention relates to the technical field of anti-fouling coatings, in particular to an anti-fouling and anti-doodling coating and a preparation method thereof.The preparation method comprises the steps that a fluorinated acrylate copolymer, capsule microspheres, modified nano titanium dioxide, a defoaming agent and a solvent are evenly stirred, and a premix is obtained; and adding a curing agent into the premix, and uniformly stirring to obtain the anti-fouling and anti-doodling coating. According to the invention, the fluorine-containing acrylate copolymer is used as a matrix, and a micro-nano rough interface is constructed by cooperating with the capsule microspheres with different particle sizes and the modified nano titanium dioxide, so that the hydrophobic and oleophobic properties of the coating are improved, and the coating is excellent in anti-fouling and anti-doodling performance; moreover, after being washed for multiple times, the coating still has excellent anti-fouling and anti-doodling effects, and is relatively good in stability.

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.