1312 results about "In situ polymerization" patented technology

The invention belongs to the technical field of fiber materials, and particularly relates to a modified aramid nanofiber as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing an aramid nanofiber dispersion liquid; (2) modifying the aramid nanofiber by using POSS; and (3) carrying out in-situ polymerization on polypyrrole on the surface of the aramid nanofiber. POSS (polyhedral oligomeric silsesquioxane) has a relatively large volume exclusion effect, the template effect of long-chain alkyl quaternary ammonium salt can be influenced by scattered adhesion of POSS on the surface of aramid nanofiber, uneven polymerization of pyrrole monomers is caused, and formation of a rough structure on the surface of the fiber is facilitated. According to the invention, the polypyrrole-coated aramid nanofiber with a coarse structure is used as a polyolefin modified material, so that the problem of low interfacial force existing in a common filler is solved, and the polyolefin resin composite material with high strength and antistatic property is obtained and can be widely applied to the fields of pipes, plates, grouting equipment parts, grouting bags and the like.

The invention relates to a composite solid electrolyte membrane with high ceramic content and a preparation method and application thereof. The preparation method comprises the following steps: mixing ceramic solid electrolyte particles activated by a silane coupling agent with an in-situ polymerization solution containing a cross-linking agent, an organic monomer, a plasticizer, a lithium salt, an ultraviolet light initiator and a thermal initiator to form solid electrolyte slurry, wherein the ceramic solid electrolyte particles account for 60-90% of the total mass of the composite solid electrolyte membrane; the preparation method comprises the following steps: coating a positive pole piece with solid electrolyte slurry, initiating shallow organic matter monomers and a cross-linking agent to generate in-situ polymerization through an ultraviolet light initiator, covering a negative pole piece for hot pressing treatment, initiating residual organic matter monomers and the cross-linking agent to generate in-situ polymerization through a thermal initiator, and forming a composite electrolyte membrane with high ceramic content. The invention also discloses an all-solid-state battery containing the composite solid electrolyte membrane. The solid-state battery containing the in-situ formed composite solid-state electrolyte membrane has relatively high cycling stability.

The invention belongs to the technical field of fuel cell electrode material preparation, and particularly relates to a carbon electrode material for a polypyrrole modified bio-based fuel cell and a preparation method of the carbon electrode material. Comprising the following steps: modifying rice hull low-temperature carbonized powder by sequentially adopting POSS (Polyhedral Oligomeric Silsesquioxane) containing unipolar functional groups and POSS containing polypolar functional groups to obtain modified low-temperature carbonized powder; and carrying out in-situ polymerization on a pyrrole monomer on the surface of the modified low-temperature carbonized powder, and carrying out high-temperature carbonization and hydrofluoric acid corrosion to obtain the polypyrrole modified bio-based fuel cell carbon electrode material. The polypolar functional group POSS not only is beneficial to the in-situ polymerization reaction of pyrrole, but also can form a continuous macromolecular chain, and a net structure is formed on the surface of the whole material. The effect of the unipolar functional group POSS is to improve the stability of the low-temperature carbonized powder in the high-temperature carbonization process, and more importantly, the unipolar functional group POSS is to provide a channel for subsequent hydrofluoric acid corrosion, etch away non-conductive substances and improve the conductivity and specific surface area of the carbon electrode material.

The invention discloses a preparation method and application of a pH-responsive controllable oil-water separation material, polyurethane sponge is used as a substrate, polypyrrole is attached to the sponge substrate through an in-situ polymerization method, a pH-responsive polymer is introduced into the sponge substrate through a soaking method, and finally the pH-responsive controllable oil-water separation material is obtained. The controllability of the material in the oil-water separation process is reflected as follows: due to the introduction of the pH responsive polymer, the surface of the material has pH responsiveness, the surface of the material has different wettability by adjusting the pH value, different types of oil-water mixtures can be controllably separated in a targeted manner, and the adsorption and desorption of oil products can be realized. Due to the introduction of polypyrrole, the material has good photo-thermal conversion capacity, the viscosity of crude oil can be effectively reduced, and the absorption rate of the crude oil can be improved. The material with pH responsiveness has wide application prospects in the fields of oil-water separation, oil product adsorption and desorption and crude oil absorption.

The invention relates to a concrete anti-cracking self-repairing agent in the technical field of building materials, and aims to solve the problem that concrete cracks are difficult to self-repair. According to the technical scheme, the self-repairing agent is characterized by comprising a microbial repairing unit formed by ZSM-5 type zeolite molecular sieve loaded bacillus pasteurii spores, mesoporous silica particles loaded with L-calcium aspartate and Fe3O4 (at) SiO2 core-shell nanoparticles which are fixed through an in-situ polymerization coating layer to form a magnetic thermal response capsule layer coating the surface of the microbial repairing unit, pLGA microspheres containing yeast extract are positioned on an interface of zeolite and hydrogel, and a trehalose-anhydrous calcium chloride eutectic compound is used as a directional mineralization accelerant. The concrete anti-cracking self-repairing agent provided by the invention is mainly used for intelligent identification and self-repairing of concrete cracks, and efficient repairing is realized through a microbial mineralization, calcium ion slow release and magnetic thermal response synergistic mechanism.

The invention belongs to the technical field of sodium ion negative electrode material preparation, and particularly relates to a double-layer carbon-coated sodium ion battery hard carbon negative electrode material as well as a preparation method and application thereof. The method comprises the following steps: firstly, dispersing activated carbon powder into a tris (hydroxymethyl) aminomethane hydrochloride buffer solution, and then adding dopamine hydrochloride to carry out self-polymerization reaction, so as to obtain activated carbon powder coated with a first layer of polydopamine; then putting the activated carbon powder into a second layer of carbon source precursor solution, and heating in a water bath to obtain double-layer carbon-coated activated carbon powder; and finally, carrying out heat treatment. The preparation method comprises the following steps: firstly, coating the surface of activated carbon with a first layer of polydopamine by an in-situ polymerization method, then promoting uniform coating of a second layer of carbon source precursor by utilizing strong adhesion of the polydopamine, and carrying out heat treatment to obtain the double-layer carbon-coated hard carbon negative electrode material. The hard carbon negative electrode material can improve the energy density of the current sodium ion battery and accelerate the industrial application of the sodium ion battery.

The invention discloses a super-hydrophobic road ice-inhibiting coating based on a photothermal effect and nano modified particles and a preparation method of the super-hydrophobic road ice-inhibiting coating. The preparation method comprises the following steps: introducing silane modified nano silicon dioxide (SiO2) and titanium dioxide (TiO2) particles into a polyaniline solution, and preparing the composite super-hydrophobic powder through a chemical oxidation polymerization method. The preparation method comprises the following steps: firstly, modifying the surfaces of SiO2 and TiO2 nanoparticles by adopting a silane coupling agent, and endowing the SiO2 and TiO2 nanoparticles with low surface energy and hydrophobic property; and then adding the modified nano-particles into an aniline monomer solution, reacting with doped acid and an oxidizing agent, so that polyaniline molecules are subjected to in-situ polymerization on the surfaces of the particles, and the composite super-hydrophobic powder with a micro-nano structure is formed. The obtained composite material has excellent photothermal conversion performance and super-hydrophobic performance at the same time, and the efficient photothermal material heat absorption ice melting effect and the synergistic ice restraining effect of the photothermal material and the super-hydrophobic material can be achieved. Compared with a traditional ice-inhibiting coating, the coating disclosed by the invention shows stronger ice-resisting capability in a low-temperature and high-humidity environment, has good durability, mechanical stability and environmental protection property, and is suitable for the field of ice prevention and ice inhibition in cold regions such as roads, bridges, airport runways and the like.

The invention discloses a multi-scale synergistically enhanced self-healing solid polymer electrolyte and a preparation method thereof, and belongs to the technical field of electrolyte materials. The preparation method of the electrolyte comprises the following steps: S1, adding the eight-arm star polymer, the carborane lithium salt, the neutral plastic crystal additive, the ionic liquid monomer and the crown ether functionalized boron alkene two-dimensional filler into a mixed solvent to form electrolyte slurry; s2, uniformly coating a base material with the electrolyte slurry to form a wet film, and drying the wet film; s3, transferring the dried membrane to an environment filled with inert gas, and initiating in-situ polymerization of an ionic liquid monomer by using ultraviolet irradiation to form a polyionic liquid nanofiber network; and S4, placing the membrane under a vacuum condition at a constant temperature of 120 DEG C for 5 hours to obtain the solid polymer electrolyte membrane. The solid polymer electrolyte membrane provided by the invention overcomes the problems of low ionic conductivity, low lithium ion transference number, insufficient mechanical properties, poor interface stability, narrow electrochemical window and the like of the existing solid polymer electrolyte.

The invention discloses a perfluoropolyether blended PEGDE-based solid electrolyte and a preparation method thereof, and belongs to the technical field of lithium metal battery solid electrolyte materials. Adding SnCl4 and TAA into the nanocellulose precursor solution, stirring, carrying out suction filtration, and drying to obtain a SnS2 (at) NC support layer; and mixing and stirring PEGDE, LiDFOB, LiTFSI and PFPE to obtain PEGDE-based solid electrolyte slurry, coating the SnS < 2 > (at) NC supporting layer with the PEGDE-based solid electrolyte slurry, and performing in-situ polymerization in a drying oven to obtain the PEGDE-based solid electrolyte. The ultrathin perfluoropolyether blended PEGDE-based solid electrolyte prepared based on PEGDE in-situ polymerization and perfluoropolyether blending and in combination with nanocellulose enhancement has the advantages of stable anode interface, high mechanical strength, high decomposition voltage and high ion transference number.

The invention provides an imine covalent organic polymer and a preparation method thereof, a negative electrode material and a potassium ion battery. The preparation method comprises the following steps: carrying out first mixing on raw materials including a carbonyl-containing first organic compound, an amino-containing second organic compound and a dispersion liquid to obtain a mixed liquid; carrying out in-situ polymerization reaction on the mixed solution to obtain an imine covalent organic polymer; wherein the first organic compound is nitro-substituted or non-substituted pyrene-4, 5, 9, 10-tetraketone; the second organic compound is selected from any one or more of C6-C12 aromatic amine compounds, C6-C12 heteroaromatic amine compounds and amino-substituted C4-C6 cyclic compounds, and the number of amino groups in each molecule of the second organic compound is greater than or equal to 2. The covalent organic polymer obtained by the preparation method can solve the problem that the structure is easily stacked and is easily dissolved in electrolyte to be damaged when the covalent organic polymer is used as a negative electrode material.

The invention relates to high-flexibility phenolic-aldehyde-free rosin modified resin, and belongs to the technical field of rosin resin. The raw materials comprise rosin, maleic anhydride, phthalic anhydride, pentaerythritol, glycerol, an acrylate monomer and magnesium oxide. The preparation process comprises four key reactions: (1) rosin and maleic anhydride are subjected to a Diels-Alder reaction to construct a rigid skeleton; (2) introducing phthalic anhydride to form a compact cross-linked network; (3) carrying out composite esterification on pentaerythritol and glycerol; and (4) the interface binding energy is improved by regulating and controlling the in-situ RAFT polymerization of the acrylate monomer. The resin does not contain phenolic aldehyde components, VOCs emission is smaller than 50 g / L, free formaldehyde is not detected, and the resin has high flexibility, heat resistance and excellent chemical resistance.

The invention provides a safe flame-retardant gel electrolyte and a lithium ion battery. The gel electrolyte is obtained by heating, cross-linking and polymerizing a gel electrolyte solution; the gel electrolyte comprises a basic electrolyte, a gel polymerization monomer, a cross-linking agent and an initiator; the basic electrolyte comprises a lithium salt, an organic solvent and an additive; the gel polymerization monomer comprises a phosphorus-containing flame-retardant monomer and a fluorine-containing flame-retardant monomer. Aiming at the pain point of the current liquid electrolyte, a phosphorus-containing flame-retardant element and a fluorine-containing flame-retardant element are innovatively introduced by forming the gel electrolyte through an in-situ polymerization means, so that the two-element synergistic flame retardance and the electrochemical performance are considered, and the defect that the electrochemical performance is reduced due to the introduction of a flame-retardant additive into the existing gel electrolyte is overcome; the compatibility of the gel electrolyte and the electrode is improved, the safety performance of the battery is enhanced, and the cost is reduced.

The invention provides an antistatic talcum powder and graphene composite reinforced material and an in-situ polymerization process thereof, and belongs to the technical field of polymer composite materials. According to the antistatic talcum powder and graphene composite reinforced material and the in-situ polymerization process thereof, the antistatic talcum powder and graphene composite reinforced material is prepared from the following raw materials in parts by weight: 100 parts of matrix resin, 5-30 parts of modified talcum powder, 0.5-5 parts of functionalized graphene and 0.1-2 parts of an antistatic synergist, the modified talcum powder is subjected to surface treatment by a silane coupling agent, the particle size range is 1-10 [mu] m, and the functionalized graphene is graphene oxide or reduced graphene oxide. Through the synergistic effect of the silane coupling agent modified talcum powder and the functionalized graphene and in combination with the ionic liquid antistatic agent, the surface resistance of the material is remarkably reduced. Nanoscale dispersion is realized by adopting an in-situ polymerization process, and the method is suitable for the field of high-performance engineering plastics.

According to the lithium battery and the preparation method thereof provided by the invention, dual mechanisms of free radical polymerization and ring-opening polymerization are combined, a stable double-crosslinking structure gel electrolyte constructed by two polymers can be obtained in an in-situ polymerization process, and the mechanical strength and the thermal stability are improved; by regulating and controlling the ratio of an epoxy monomer to an acrylate monomer, firstly, room-temperature ring-opening polymerization is performed, so that part of in-situ gel is formed before formation, smooth formation of a gel interface is ensured, the first coulombic efficiency of the battery is not influenced, and meanwhile, the dosage of the acrylate monomer and a corresponding thermal initiator is reduced; high-temperature treatment is carried out after formation, so that the interface aging of the battery is stable, the cycle life of the battery is prolonged, the acrylate monomers are polymerized, the high temperature continues to promote the polymerization of the residual epoxy monomers, the polymerization conversion rate is favorably increased, and the high-pressure resistance and oxidative decomposition resistance of the gel electrolyte are improved.

The invention discloses a polyaniline composite flexible electrode material, a preparation method and a supercapacitor, and the preparation method comprises the following steps: introducing sodium sulfonate and cyano into an aniline structure through a two-step method, and obtaining modified aniline; the preparation method comprises the following steps: mixing graphene oxide with 3-aminopropyltriethoxysilane for reaction to obtain modified graphene oxide; then, by taking polyvinyl alcohol as a space stabilizer and a template agent, mediating in-situ polymerization of aniline, modified aniline and modified graphene oxide to obtain a polyaniline derivative prefabricated solution; and then hydrophilic hydrogel is introduced to prepare the polyaniline composite flexible electrode material. The polyaniline composite flexible electrode material provided by the invention is good in cycling stability and excellent in electrochemical performance and mechanical performance, and when the composite flexible electrode material is assembled into a supercapacitor, the specific capacitance value and cycling stability of the supercapacitor can be remarkably improved.

The invention relates to the technical field of anti-counterfeiting materials, and particularly discloses a composite color-changing agent, anti-counterfeiting color-changing ink and a preparation method of the anti-counterfeiting color-changing ink. The composite color-changing agent is a composite microsphere with a core-shell-satellite structure, the core is a temperature-sensing color-changing microcapsule and is composed of a temperature-sensing color-changing core material and a polymer wall material, the shell is a transparent polymer shell and wraps the core through in-situ polymerization, the satellite is a light-sensing color-changing material and is embedded and fixed on the shell, and the shell is a transparent polymer shell and is embedded and fixed on the shell. According to the composite color-changing agent, the light-sensitive material and the temperature-sensitive material are compositely inlaid through the polymer shell, so that the problem of poor compatibility of the light-sensitive material and the temperature-sensitive material is solved, the stability and the production efficiency are improved, and the imitation difficulty is increased.

The invention belongs to the technical field of lithium ion battery solid electrolytes, and discloses a multi-component in-situ polymerized gel solid electrolyte and a preparation method and application thereof, the gel solid electrolyte is prepared by adding an amide cross-linking agent and a polymeric monomer into a basic electrolyte to obtain a precursor solution, then adding an initiator, and carrying out in-situ polymerization at 45-70 DEG C for 6-12 hours, the amide cross-linking agent is one or more of N, N '-methylene bisacrylamide, polyacrylamide, poly (2-acrylamide-2-methyl-1-propanesulfonic acid), polymethacrylamide, polyethylene glycol diacrylamide, polyether amide or adipamide. The first coulombic efficiency of an LCOLi button cell assembled by the multi-component in-situ polymerization solid-state gel electrolyte reaches 94.81%, the capacity retention rate after 500 cycles at 3-4.6 V still reaches 80% or above, and the LCOLi button cell can safely pass a needle test and can be applied to the field of solid-state electrolytes.

The invention relates to a silicon-carbon negative electrode material and a preparation method and application thereof, in particular to a liquid-phase in-situ polymerization coating-based silicon-carbon negative electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a silicon-carbon composite precursor and a solvent according to a certain mass ratio, and uniformly stirring to form a solvent system; adding an organic carbon source into the solvent system, and uniformly stirring to form an organic precursor solution; carrying out hydrothermal reaction on the organic precursor solution, so that an organic carbon source is subjected to in-situ polymerization reaction on the surface of the silicon-carbon composite precursor to form a compact coating layer, and obtaining an intermediate product; and carrying out heat treatment on the intermediate product, discharging, and sieving to obtain the silicon-carbon negative electrode material based on liquid-phase in-situ polymerization coating, when the silicon-carbon negative electrode material is used for preparing a negative electrode plate and assembling the negative electrode plate into a lithium ion battery, the first-cycle coulombic efficiency and the cycle performance of the lithium ion battery can be improved.

The invention relates to conductive silk fibroin loaded methacrylated gelatin hydrogel and a preparation method thereof, and belongs to the technical field of biomedical materials. The preparation method comprises the following steps: S1, adding silk fibroin fibers into a dopamine hydrochloride solution, stirring, standing, then adjusting the pH value to 8-9, and carrying out a heating reaction to obtain polydopamine grafted silk fibroin fibers; s2, sequentially dipping the polydopamine grafted silk fibroin fibers in an ammonium persulfate solution and a pyrrole solution to obtain conductive silk fibroin fibers; and S3, adding the conductive silk fibroin fibers into the methacrylated gelatin solution, carrying out ultraviolet light cross-linking curing, and then soaking the conductive silk fibroin fibers in a glycerol solution to obtain the conductive silk fibroin loaded methacrylated gelatin hydrogel. The method not only can ensure the structural integrity and conductive continuity of a conductive network in the hydrogel, but also breaks through the dependence of in-situ polymerization on the permeability of a matrix.

The present application provides an in-situ polymerized solid-state electrolyte, a method for preparing a solid-state electrolyte by means of in-situ polymerization, a solid-state battery, a method for preparing a solid-state battery, and an electric device. The in-situ polymerized solid-state electrolyte comprises a room-temperature initiator, a high-temperature initiator, a cyclic monomer polymer, and an electrolyte salt. The room-temperature initiator can exert a function in a standing period after a battery is filled with an electrolyte, to achieve electrode sheet wetting by the electrolyte and implement room temperature prepolymerization of a precursor solution, thereby improving the uniformity of the precursor solution contained in each part in the battery, and avoiding solid-liquid demixing in the precursor solution. In addition, the high-temperature initiator can improve the degree of curing of the whole electrolyte and improve the ion transport efficiency and safety of the solid-state electrolyte. The joint action of the room-temperature initiator and the high-temperature initiator comprehensively improves the uniformity of the in-situ polymerized solid-state electrolyte, and improves the quality stability of the solid-state.

The invention relates to a super-flexible supercapacitor with a multi-layer seamless interlocking interface and a preparation method of the super-flexible supercapacitor. The super-flexible supercapacitor takes a carbon nanotube or a composite film thereof as an electrode; and polyanion gel (polyacrylamide / polyacrylic acid / poly (3-sulfonic acid propyl methyl acrylic acid potassium salt) and polycation gel (polyacrylamide / polyacrylic acid / poly (methacryloyloxyethyl trimethyl ammonium chloride) are used as the double-layer heterogeneous electrolyte. A covalent connection electrode / electrolyte interface is constructed through anchoring interface polymerization, and double-layer gel electrolyte with electrostatic attraction and mutual entanglement is constructed through in-situ polymerization, so that the super-flexible supercapacitor with a multi-layer seamless interlocking interface is realized. Compared with the prior art, the super capacitor has super-strong interface toughness and interface adhesion, can resist mechanical deformation including bending, folding, twisting, winding, extruding, knotting and the like, the capacity retention ratio is greater than 95% after the super capacitor is folded for hundreds of thousands of times, and the capacity retention ratio is greater than 89% after the super capacitor is circularly charged and discharged for hundreds of thousands of times.

The invention belongs to the technical field of lithium metal batteries, and relates to preparation of an ultrathin polymer electrolyte with a wide electrochemical window and application of the ultrathin polymer electrolyte in a solid-state lithium metal battery, a preparation method comprises the following steps: firstly, coating a substrate with polymer slurry, and then soaking, stripping and drying to obtain a porous membrane matrix; the preparation method comprises the following steps: mixing an electrolyte, a conductive lithium salt, a cross-linking agent, 4-fluorine-alpha-methyl styrene and an initiator to obtain an electrolyte precursor solution; and then supporting the electrolyte precursor liquid on the porous membrane substrate, and carrying out in-situ polymerization and curing to obtain the polymer electrolyte. Compared with the prior art, the thickness of the polycarbonate solid electrolyte is 7.8 microns, and the polycarbonate solid electrolyte shows high room-temperature ionic conductivity, a wide electrochemical window and excellent dendritic crystal resistance. And the corresponding 4.5 V high-voltage LiLCO solid-state battery can stably circulate for 1500 circles at room temperature. The electrolyte is ultrathin, the preparation process is simple, the scale is easy to enlarge, and the electrolyte shows a good practical application prospect.

The invention belongs to the field of solid-state batteries, and particularly relates to a solid-state battery and a composite electrolyte, preparation and application thereof, and the preparation method of the composite electrolyte comprises the following steps: dissolving a base membrane polymer with a solvent A to obtain a base membrane solution, and forming the base membrane solution into a wet membrane; pre-forming the wet film in an environment with the humidity of 50-80% RH in advance; soaking the wet film in a solvent B, and forming the wet film into a base film; and compounding the base membrane and a precursor solution for forming the electrolyte, and then carrying out in-situ polymerization to prepare the composite electrolyte, wherein the base membrane polymer comprises at least one of polyether sulfone, sulfonated polyether sulfone and polyetherimide; the solvent B is a mixed solvent of water and C1-C4 alcohol, and the volume ratio of the water to the C1-C4 alcohol is 1: (0.1-10); the precursor solution is a solution containing a monomer, a plasticizer and electrolytic salt. The method provided by the invention can be used for preparing the solid electrolyte with a special structure and excellent performance such as fast charge stability.

The invention relates to a composite diaphragm with a functional gradient coating and a preparation method of the composite diaphragm. The composite diaphragm comprises a porous base membrane, a solid electrolyte coating attached to one side or two sides of the porous base membrane, a mixed functional coating attached to the surface of the solid electrolyte coating, and a polymer composite coating on the outermost layer, the solid electrolyte coating comprises a first solid electrolyte and a first binder; the mixed functional coating comprises a second solid electrolyte, a high dielectric constant nano material and a second binder; the polymer composite coating comprises an in-situ polymerized polymer of a three-dimensional network structure, and a lithium salt and a third solid electrolyte which are filled in gaps of the three-dimensional network structure; the polymer is formed by initiating in-situ polymerization of polymerizable monomers through a photoinitiator. When the composite diaphragm is applied to the lithium battery, the cycle performance of the lithium battery can be improved.

The invention discloses an artificial SEI film coated graphite negative electrode material and a preparation method and application thereof, and belongs to the technical field of lithium ion battery negative electrode materials. The preparation method comprises the following steps: heating and oxidizing graphite in mixed gas of air and nitrogen, and cooling to obtain oxidized and etched graphite; then dispersing the oxidized and etched graphite in a solvent, adding methyl methacrylate and graphene, stirring and initiating an in-situ polymerization reaction, and forming a doped coating layer on the oxidized and etched graphite; and finally, carrying out vacuum drying on the coated oxidized and etched graphite, and cooling to obtain the artificial SEI film coated graphite negative electrode material. The specific surface area of graphite is increased through oxidation etching, the ion diffusivity is improved, the combination effect of the organic polymer is improved, the first efficiency of the negative electrode material is remarkably improved by combining the synergistic effect of the conductive polymerized organic matter and graphene, and the conductivity, the structural stability and the interface compatibility are enhanced.

An exemplary embodiment of the present disclosure provides a method for making an electrolyte, comprising: providing a solid polymer electrolyte (SPE); incorporating boron nitride with the SPE to form a composite polymer electrolyte (CPE), wherein the boron nitride is at least one of exfoliated hexagonal boron nitride (ex-BN) or fluorine-fimctionalized hexagonal boron nitride (BN-F).

The invention discloses a preparation method of an anti-static ABS (Acrylonitrile Butadiene Styrene) composite material, and belongs to the technical field of ABS composite materials. According to the preparation method of the anti-static ABS composite material, the anti-static performance and the mechanical performance of the composite material are remarkably improved through the synergistic effect of the conductive core-shell particles and the surfactant type anti-static agent. The formula comprises ABS resin, conductive core-shell particles, a surfactant type antistatic agent, an antioxidant BHT (butylated hydroxytoluene), EPDM (Ethylene-Propylene-Diene Monomer), a plasticizer and the like. Conductive core-shell particles are prepared through an emulsion polymerization method, and in-situ polymerization and blending reaction are carried out at high temperature to ensure that the conductive particles are uniformly dispersed in the material to form a stable conductive network. According to the method, melt blending is performed through a double-screw extruder, so that the uniformity and stability of the material are ensured. The finally obtained composite material has excellent antistatic property, mechanical strength and thermal stability, is suitable for the industries of electronics, automobiles and the like, and has a wide application prospect.

The invention provides a preparation method and application of a cationic dyeable polyester matting agent, and relates to the field of matting agent preparation, and the preparation method comprises the following steps: carrying out ultrasonic treatment on TiO2, a dispersing agent and a coating agent in ionized water; adding a lignosulfonate compound modifier, and performing spray drying to obtain superfine powder; and mixing with ethylene glycol and a dispersing agent to prepare the cationic polyester delustering agent. According to the invention, TiO2 is treated by using an ultrasonic coating technology, so that a compact protective layer is formed on the surface of TiO2, and adsorption and coordination of sulfonate groups are inhibited; a lignosulfonate compound is adopted to construct a core-shell structure, so that the steric hindrance of TiO2 is increased, and TiO2 is prevented from being agglomerated in a high-salt environment; the superfine powder is prepared by combining a spray airflow drying process, the process is simplified, the equipment requirement is low, the traditional concentration step can be omitted, and slurry with different concentrations and viscosities can be adapted. The obtained delustering agent has excellent dispersity in ethylene glycol and can be directly used for in-situ polymerization of cationic polyester, and efficient and continuous production is realized.

The application provides a tyrosinase-based transdermal delivery system for treating vitiligo, which is a core-shell structure, the core is tyrosinase, and the shell is a polymer shell layer. The application coats a polymer protective layer on the surface of the tyrosinase through in-situ polymerization reaction on the double bond of the tyrosinase, can effectively protect the activity of the tyrosinase and promote the transdermal delivery of the tyrosinase, and can control the targeted delivery of the tyrosinase nanogel to melanocytes in the deep part of the skin and hair follicle by adjusting the polymerization conditions of the polymer shell, so as to promote the in-situ synthesis of melanin. The transdermal delivery system of the application can also load active small molecules with anti-inflammatory function in the center of the tyrosinase, and the small molecules are released after being targeted and delivered to the inflammation area of vitiligo along with the tyrosinase nanogel, so as to relieve inflammation and protect melanocytes from damage.

The invention belongs to the technical field of lithium ion batteries, and relates to a gel electrolyte based on in-situ polymerization and a preparation method of a lithium ion battery. The preparation method comprises the following steps: adding a cross-linking monomer with a structure with more than three arms and a polyfluorinated acrylate monomer into an electrolyte, and adding an initiator to obtain a monomer solution; then injecting into the lithium ion battery, placing and aging to enable the monomer solution to fully infiltrate a positive plate, a negative plate and a diaphragm; and performing thermal polymerization on the aged battery cell in situ to obtain the gel electrolyte lithium ion battery based on in-situ polymerization. According to the invention, a polymethylacrylic acid based gel electrolyte is prepared by using a method of in-situ polymerization of a polyfluorine monomer with interface film-forming characteristics and polymerization characteristics and a multi-arm cross-linking monomer with high polymerization activity; wherein the monomer with double characteristics can participate in polymerization, and the residual monomer can serve as an interface film-forming additive, so that more LiF is formed in a solid electrolyte membrane of a negative electrode and a positive electrode-electrolyte phase, and the interface stability is enhanced.