1041 results about "Polymeric matrix" patented technology

The invention discloses a high-temperature-resistant composite insulated cable for an intelligent power grid, and belongs to the technical field of cables. The objective of the invention is to solve the problems of single function, poor high-temperature resistance and easy overload failure of the existing cable. The cable sequentially comprises a compressed circular tinned copper conductor, an inner shielding layer, an XLPE inner insulating layer, an outer shielding layer, a self-repairing composite insulating layer, a metal shielding layer and an outer sheath layer from inside to outside, the self-repairing composite insulating layer is prepared by blending a self-repairing polymer matrix and a microencapsulation phase change material, and the melting point of the microencapsulation phase change material is accurately matched with the double dynamic bond response temperature of the self-repairing matrix. Through cooperation of self-repairing and thermal buffering functions, integration of multiple functions of high temperature resistance, self-repairing and thermal buffering is achieved, the long-term working temperature reaches 105 DEG C or above, no breakdown occurs during thermal shock at 180 DEG C, the overload repairing rate exceeds 80%, the high-temperature and overload working conditions of an intelligent power grid can be effectively adapted, the preparation steps are clear and reproducible, and remarkable technical advantages and application value are achieved.

The invention relates to the technical field of antibacterial and antifouling fabrics, provides a preparation method of an antibacterial and antifouling fabric, and solves the problem of poor fabric durability caused by single functional component and lack of physical protection in the prior art. The preparation method comprises the following steps: S1, preparing MOFs loaded antibacterial fibers: blending a metal organic framework antibacterial composite nanomaterial and a polymer matrix material, and carrying out melt spinning to prepare the MOFs loaded antibacterial fibers; s2, constructing a self-cleaning functional coating: dispersing the fluorinated nanoparticles and a polymer adhesive in a solvent to prepare a self-cleaning coating solution; s2, performing surface activation treatment on the MOFs-loaded antibacterial fiber obtained in the step S1, soaking the MOFs-loaded antibacterial fiber in the self-cleaning coating liquid, and performing pulling and curing to form a bionic micro-nano structure coating on the surface of the MOFs-loaded antibacterial fiber so as to obtain a functional composite fiber; s3, spinning forming: taking the functional composite fibers obtained in the step S2 as warp yarns and / or weft yarns, and weaving to obtain the antibacterial and antifouling fabric.

The invention discloses a negative electrode interface modification material, a negative electrode plate, a positive electrode interface functional layer, a positive electrode plate, a solid-state battery and a power utilization device, and relates to the technical field of batteries, the negative electrode interface modification material comprises a first polymer matrix, a reinforcing filler, a conductive agent and a lithium salt, the modulus of the reinforcing filler is greater than 50 GPa. The tensile strength of the negative electrode interface modification material can be improved through the first polymer matrix, breakage of a negative electrode interface modification layer is reduced, interface impedance is reduced, meanwhile, the first polymer matrix can be matched with the expansion coefficient of a silicon-based material, and bulging of a negative electrode plate is reduced. The modulus of the reinforcing filler is greater than 50GPa, so that the modulus of the negative electrode interface modification layer can be improved, the expansion of the silicon-based active material is further inhibited, the conductive agent can relieve the problem that the flexible substrate interface of the copper foil and the negative electrode interface modification layer possibly causes unsmooth electron transmission, and the lithium salt can improve the ion conduction capability and reduce the interface impedance.

The invention discloses an electrolytic adhesive, an electrolytic cotton adhesive tape and a preparation method of the electrolytic adhesive. The electrolytic cotton adhesive tape comprises the following components in parts by weight: 5-10 parts of 1, 1 '-ferrocene diformyl chloride, 10-15 parts of acrylic acid beta-cyclodextrin ester, 3-8 parts of polyethylene glycol diglycidyl ether, 10-20 parts of ionic liquid, 1.5-3 parts of a cross-linking agent, 10-15 parts of tackifying resin and 0.5-1.5 parts of an initiator, and a polymer matrix comprises an acrylic acid-hydroxypropyl acrylate copolymer and acrylic acid-2-ethylhexyl ester. Comprising an adhesive layer and an adhesive tape base layer, the adhesive layer is prepared from the electrolytic adhesive, and the adhesive tape base layer is prepared from acrylic foam; the obtained electrolytic cotton adhesive tape has high initial adhesion and viscosity strength after power-on and power-off re-adhesion.

The present application provides an entropy-regulated composite dielectric film, which comprises a polymer matrix; and fillers dispersed in the polymer matrix, wherein the fillers comprise Bi 4‑a M 1a Ti (3‑3b) M 2b O 12 , wherein M1 comprises at least one of lanthanum, neodymium, samarium and praseodymium, M2 comprises at least one of zirconium, hafnium and tin, 0 The entropy-regulated composite dielectric film has high temperature resistance, high breakdown strength, high polarization strength, high energy storage density and good stability.

The invention relates to the field of oil storage microcapsules, and discloses a porous covalent organic framework oil storage microcapsule as well as a preparation method and application thereof. Under the catalysis of p-toluenesulfonic acid, 4, 4 ', 4' '-(1, 3, 5,-triazine-2, 4, 6-triyl) triphenylamine and trialdehyde phloroglucinol monomers are promoted to be subjected to condensation reaction in the repeated oscillation process, a product is purified to prepare a 4, 4', 4 ''-(1, 3, 5,-triazine-2, 4, 6-triyl) triphenylamine covalent organic framework, and by means of a periodic pore structure of the covalent organic framework, the covalent organic framework can be used for preparing the covalent organic framework. And the lubricating oil is adsorbed and stored and can be controllably separated out to provide lubrication during working, so that a high-performance self-lubricating effect can be realized. In addition, covalent organic frameworks are used as hard particles to be doped into a polymer matrix to modify the polymer matrix, so that the wear resistance of the polymer matrix can be greatly enhanced, and the performance of the self-lubricating bearing material is improved.

The invention relates to an adsorbent and a preparation method and application thereof, the adsorbent comprises a polymer matrix and a nanofiller uniformly embedded in the polymer matrix, the polymer matrix comprises a calcium / boron cross-linked polyvinyl alcohol-sodium alginate blend, and the nanofiller is sulfonic acid / carboxylic acid functionalized graphene oxide; the mass fraction of the nano filler in the adsorbent is 0.05%-0.60%; wrinkles and irregular hole structures are distributed on the surface of the adsorbent. The adsorbent is used for removing tritium in water and is high in adsorption capacity, stable in structure and good in recycling performance. The removal rate of tritium in the single-stage adsorption process is greater than 8.5%, and the removal rate of tritium in the third-stage adsorption process is 19.4-57.7%.

The invention discloses an industrial high-temperature-resistant cable, and belongs to the technical field of cables. The cable comprises a cable core and a sheath layer wrapping the cable core. The sheath layer comprises the following components in parts by weight: 32-38 parts of alkenyl polyvinyl chloride, 38-42 parts of methyl vinyl silicone rubber, 15-20 parts of modified basalt fibers, 1-2 parts of a vulcanizing agent, 6-10 parts of a plasticizer, 1-2 parts of a lubricant, 1-2 parts of a stabilizer and 0.3-0.8 part of an antioxidant. Functional modification is performed on the surface of the basalt fiber, so that the basalt fiber and a polymer matrix of the cable sheath can form a multi-layer and firm chemical structure, and the comprehensive performance of the sheath material is effectively improved.

The invention discloses a composite solid electrolyte and a preparation method and application thereof, and belongs to the technical field of solid lithium batteries. The composite solid electrolyte comprises a polymer matrix, a lithium salt and a lithium ion modified ionic metal organic framework (MOF) material. The metal center of the ion-conducting MOF material can be selected from Zr, Ti, Hf and the like, and the organic ligand can be selected from organic acids containing sulfydryl, sulfo groups and the like. The MOF material can effectively inhibit crystallization of a polymer matrix and increase the proportion of an amorphous region, Lewis acid sites on the surface of the MOF material can promote dissociation of lithium salt, and a lithium ion coordination channel formed in the MOF material can provide an extra rapid transmission path for lithium ions. When the electrolyte is applied to the solid-state lithium battery, the growth of lithium dendrites can be effectively inhibited, and the rate capability, the cycling stability and the safety of the battery can be remarkably improved.

The invention discloses a flexible piezoresistive sensor and a preparation method and application thereof, the flexible piezoresistive sensor comprises an upper layer flexible conductive member, the upper layer flexible conductive member comprises an upper layer flexible substrate and an upper layer conductive layer, one surface of the upper layer flexible substrate is provided with a microstructure formed by sand paper reverse molding, and the upper layer conductive layer is embedded in the surface of the microstructure; the lower-layer flexible conductive member comprises a lower-layer flexible substrate, a lower-layer conductive layer and an elastic conductive layer; the lower-layer flexible substrate is provided with an arc-shaped stripe array microstructure; the elastic conductive layer includes a polymer matrix and a conductive filler dispersed therein. Through the double-gradient design of the gradient conductivity and the gradient structure, the core contradiction that a traditional flexible piezoresistive sensor is difficult to consider high sensitivity and wide linear range at the same time is successfully solved by utilizing the deep coupling and synergistic effect of the conductivity gradient and the structure gradient, and synchronous improvement of the sensitivity and the linear range is realized.

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 discloses a composite solid electrolyte layer, a preparation method and application, the composite solid electrolyte layer comprises a porous membrane laminated on a negative pole piece, and pores in the porous membrane and gaps between the porous membrane and the negative pole piece are filled with in-situ generated polymers. Inorganic solid electrolyte is also dispersed in the porous membrane, and lithium salt is dispersed in the polymer and the porous membrane. The composite solid electrolyte layer is obtained through in-situ polymerization of a polymer in pores in the porous membrane and gaps between the porous membrane and the negative electrode plate, and a novel interface structure with the electrode-electrolyte integration characteristic is constructed. By adopting a collaborative optimization strategy of a polymer matrix and inorganic filler double-crosslinking network system and an interface stable layer, the volume effect problem of a silicon-based negative electrode, the electrolyte interface impedance problem and the battery safety problem can be solved at the same time, so that the cycling stability and the rate capability of the lithium ion battery are remarkably improved.

The invention discloses an ultra-flexible stretchable dimming film and a preparation method thereof, and relates to the technical field of dimming films, and the ultra-flexible stretchable dimming film comprises an upper transparent electrode layer, a dimming function layer and a lower transparent electrode layer which are sequentially stacked from top to bottom; the preparation method comprises the following steps: 1) preparing a main matrix material / ultraviolet curing resin mixture; 2) assembling the dimming film; and 3) ultraviolet light curing. According to the invention, through surface phosphonic acid functionalization treatment, covalent bond anchoring of cerium oxide nanoparticles is realized on a thermoplastic polyurethane fiber network; by constructing a full-thermoplastic polyurethane material system, the breakthrough of interfacial compatibility between a fiber reinforced phase and a polymer matrix is realized, so that the film has high tensile strain capacity and excellent fatigue resistance on the premise of keeping high transparency.

The invention relates to the technical field of flexible electronics and sensing, in particular to a capacitive flexible pressure sensor based on a barium titanate composite dielectric layer, which sequentially comprises a lower electrode layer, an upper electrode layer, a lower electrode layer and an upper electrode layer from bottom to top, the composite dielectric layer is arranged on the lower electrode layer and is formed by compounding an elastic polymer matrix and a high-dielectric-constant barium titanate (BaTiO3) filler; the upper electrode layer is made of a flexible conductive material and is arranged on the composite dielectric layer; the lower electrode layer and the upper electrode layer are connected with an external capacitance measuring circuit through wires. According to the sensor disclosed by the invention, the comprehensive performance of high sensitivity, wide detection range, low hysteresis and excellent cycle stability is realized by optimizing the shape of the barium titanate filler, surface modification and composite structure design.

The invention provides a solid electrolyte membrane, a preparation method thereof and a solid-state battery. The solid electrolyte membrane comprises an inorganic filler, a polymer matrix and a lithium salt, wherein the inorganic filler comprises a dielectric conductive ion material and oxide particles; wherein the dielectric conductive ion material comprises a dielectric filler and a silane coupling agent which is coated on the outer surface of the dielectric filler and contains cyano groups, the dielectric filler contains transition metal elements, and the transition metal elements are Nb elements and / or Ta elements; the oxide particles comprise lanthanum oxide particles; the mass ratio of the dielectric conductive ion material to the oxide particles is (1-5): 1, and the ratio of the total mass of the inorganic filler to the mass of the polymer matrix is (10-50): 100. The solid electrolyte membrane provided by the invention has relatively high ionic conductivity, mechanical strength and structural stability, and can effectively improve the comprehensive performance of the solid lithium metal battery.

The invention provides a preparation method of a high-temperature-resistant and anti-aging cable sheath material, which comprises the following steps: acquiring molecular chain distribution data of a polymer matrix and an inorganic filler, and establishing a bonding strength distribution diagram; obtaining regional non-uniform points, and optimizing filler distribution parameters; calculating a crosslinking temperature gradient model based on the compatibility improvement coefficient; predicting crosslinking density according to the model and correcting reaction parameters; evaluating the aging rate distribution and optimizing the dosage of the modifier. According to the method, filler dispersion is regulated and controlled through molecular-level bonding strength, a crosslinking temperature field is made to adapt to filler distribution, a formula is predicted and optimized in combination with aging behaviors, therefore, the structural uniformity and heat resistance of the material are remarkably improved, the service life of the material is remarkably prolonged, and the method solves the problems that in a traditional process, filler dispersion is not uniform, a crosslinking thermal field is mismatched, and aging evaluation is not accurate.

The invention belongs to the technical field of solid-state batteries, and provides a lithium-ion solid-state electrolyte and a preparation method and application thereof. The lithium ion solid electrolyte comprises a polymer matrix, a lithium salt, a polar organic compound, a polymer monomer (comprising a first monomer and a second monomer) and an anion acceptor. The preparation method comprises the following steps: mixing a lithium salt and a polar organic compound to obtain a eutectic mixture; mixing a polymer matrix, a first monomer, a second monomer and an anion acceptor with the eutectic mixture to obtain a precursor solution; and coating a substrate with the precursor solution, curing and drying. The invention also discloses a solid-state lithium ion battery comprising the lithium-ion solid-state electrolyte and a manufacturing device of the solid-state lithium ion battery. The lithium ion solid electrolyte disclosed by the invention is high in room-temperature ionic conductivity, excellent in tensile strength, tensile elongation and high in breaking strength and incombustibility, and the lithium ion transference number is increased; therefore, the battery has long-term cycle stability, and the problem of electrode stress failure under low stacking pressure is solved.

The invention provides a high-thermal-conductivity and high-adhesion thermal interface material and a preparation method thereof, and belongs to the technical field of thermal interface materials. The thermal interface material is prepared by in-situ cross-linking reaction of the following components: a polymer matrix comprising a polymer containing active functional groups and a cross-linking agent; the heat-conducting filler accounts for more than 90wt% of the total weight of the thermal interface material; the low-melting-point organic medium accounts for 0.1-5wt.% of the total weight of the thermal interface material, and the melting point of the low-melting-point organic medium is lower than the crosslinking curing temperature of the polymer matrix; wherein the heat-conducting filler forms a continuous three-dimensional heat-conducting path in a cross-linked polymer network, and the low-melting-point organic medium is uniformly dispersed in the network. Under the ultrahigh filler content, high bulk phase thermal conductivity and high initial viscosity are realized at the same time, and the contradiction between high thermal conductivity and high interface contact resistance is solved. The high viscosity at room temperature is beneficial to operation and storage, and is softened due to melting of an organic medium at the working temperature of a device, so that the interface wettability is dynamically enhanced, and the contact thermal resistance is minimized.

The invention discloses a fireproof coated pipe as well as a preparation method and application thereof, and relates to the field of organic composite materials. The fireproof coated pipe comprises a mother blank material and a liquid waterproof agent, wherein the mother blank material comprises a flame-retardant polymer matrix, coated graphite and a heat-conducting filler; the coated graphite is formed by expanded graphite and a coating layer on the surface, and the coating layer comprises a silicon source and a phosphorus source. The surface of the expanded graphite is coated with the silicon dioxide-phosphide composite material, so that the compatibility of the filler and a specific type of flame-retardant polymer matrix can be improved, the addition amount of the heat-conducting filler is reduced to ensure uniform dispersion, and synergistic multiplication of a flame-retardant function and optimization of a heat-conducting network are realized; meanwhile, a specific type of liquid waterproof agent is introduced and is extruded and blended with the master batch, so that the material is endowed with excellent waterproofness, meanwhile, the compatibility with other core properties is ensured, the waterproof coated pipe material with efficient heat conduction, flame retardance, waterproofness and mechanical strength is provided, and the application field is expanded.

The invention relates to the technical field of batteries, in particular to a high-dispersity and low-crystallinity composite solid electrolyte and an all-solid-state lithium metal battery. The composite solid electrolyte comprises a polymer matrix, a lithium salt, an inorganic filler and a quaternary ammonium salt surfactant, the mass ratio of the polymer matrix to the lithium salt to the inorganic filler to the quaternary ammonium salt surfactant is 100: (60-80): (10-20): (1-15). Through the quaternary ammonium salt additive, the inorganic filler is uniformly dispersed in a polymer matrix, and the crystallinity of polyethylene oxide (PEO) is effectively reduced, so that the ion transmission performance of the electrolyte and the cycling stability of a battery are remarkably improved, and the problem that organic-inorganic interfaces between PEO and LLZTO in the composite solid electrolyte are incompatible is systematically solved; and a key technical path is provided for developing a new generation of energy storage devices with high safety, long cycle life and excellent electrochemical performance.

The invention relates to the field of polyimide films, and discloses a catalytic polyimide film preparation method, which comprises: S1, preparing a prepolymer, dissolving a fluorine-containing diamine monomer in a polar solvent, placing in a reaction kettle, adding an aromatic dianhydride monomer at a low temperature of 0-10 DEG C, stirring, mixing, and reacting to generate a polyamide acid solution; s2, primary catalysis: adding an organic base catalyst into the polyamide acid solution prepared in the step S1; s3, second-stage catalysis: after the step S2 is completed, adding a coordination type organic basic catalyst into the first-stage catalyst; and S4, film formation and post-treatment. Amidation and ring-closure reactions are promoted in stages through the synergistic effect of the double catalysts, the reaction rate matching performance is remarkably improved, accurate control over molecular chains is achieved, a high-purity polymer matrix with uniform molecular weight distribution and complete ring closure is obtained, and the structural uniformity and mechanical strength of the film are fundamentally improved; the structure defect caused by incomplete reaction under a traditional single catalytic system is avoided.

The invention discloses a fluorinated COF enhanced PVDF-HFP composite gel polymer electrolyte. The fluorinated COF enhanced PVDF-HFP composite gel polymer electrolyte is prepared from the following raw materials: polyvinylidene fluoride-co-hexafluoropropylene, a fluorinated covalent organic framework containing an ether oxygen bond and a carbon-carbon unsaturated double bond, bis (trifluoromethylsulfonyl) imide anion ionic liquid and fluorine-containing imide lithium salt, the fluorinated covalent organic framework containing the ether-oxygen bond and the carbon-carbon unsaturated double bond is prepared by carrying out condensation reaction on a perfluorophenylene-containing module and the ether-oxygen bond-containing aromatic module. According to the electrolyte, PVDF-HFP is used as a polymer matrix, bis (trifluoromethylsulfonyl) imidogen ionic liquid is used as a functional phase and a plasticizer, imide lithium salt is used as a lithium ion source, fluorinated COF containing ether oxygen bonds and olefinic bonds is introduced, and the electrolyte has high ionic conductivity, high lithium ion transference number, excellent mechanical property and interface stability; the method is especially suitable for a high-safety lithium metal battery system.

The invention belongs to the technical field of development and manufacturing of solid-state electrolyte materials and solid-state lithium batteries, and particularly relates to an all-solid-state oxide-polymer electrolyte membrane as well as a preparation method and application thereof. The electrolyte membrane comprises a polymer matrix, a lithium salt, butanedinitrile, lithium lanthanum zirconium tantalum oxide and graphite phase carbon nitride, the polymer matrix, the lithium salt, the butanedinitrile, the lithium lanthanum zirconium tantalum oxide and the graphite phase carbon nitride are uniformly mixed to form a solid film; the polymer matrix is polyacrylonitrile and forms a framework of the electrolyte membrane; the lithium salt, the butanedinitrile, the lithium lanthanum zirconium tantalum oxide and the graphite phase carbon nitride are at least physically and uniformly dispersed in the polymer matrix. The electrolyte membrane can be prepared through the steps of slurry preparation, defoaming treatment, membrane forming processing, drying and curing and the like, and can be used in a solid-state lithium battery, so that the contact between the electrolyte membrane and an electrode interface is improved, side reaction is inhibited, the ion transmission efficiency and mechanical property are improved, the interface impedance is reduced, and the cycling stability and safety of the solid-state lithium battery are enhanced.

The invention discloses a multifunctional composite diaphragm for a sodium ion battery and a preparation method of the multifunctional composite diaphragm, and belongs to the technical field of electrochemical energy storage devices. The multifunctional composite diaphragm for the sodium ion battery prepared by the invention comprises a polymer matrix, an inorganic nanofiller and a sodium ion conduction accelerant, and the polymer matrix comprises at least one structural polymer and at least one synergistic polymer, the synergistic polymer is composed of a vinyl lactam polymer and a vinyl ester polymer according to a specific ratio, and the sodium ion conduction accelerator comprises at least one of soluble sodium salts. Through the synergistic effect of vinyl lactam and vinyl ester polymers, the adaptability of the structural polymer, the dispersity of the inorganic filler and the conduction efficiency of sodium ions are comprehensively optimized. The obtained composite diaphragm can simultaneously achieve the core functions of high electrolyte wettability, high thermal stability and efficient sodium ion conduction, and meets the multifunctional requirements of high-safety and high-performance sodium ion batteries.

The invention relates to the field of rubber formulas and manufacturing processes, and provides high-cutting-resistance and impact-resistance side wall rubber of a tensile tire and a preparation method of the high-cutting-resistance and impact-resistance side wall rubber. The sidewall rubber is prepared from components in parts by weight as follows: 60-80 parts of natural rubber, 10-20 parts of emulsion polymerized styrene-butadiene rubber, 10-20 parts of butadiene rubber, 30-40 parts of carbon black, 10-25 parts of white carbon black, 1-5 parts of carbon nanotubes, 1-3 parts of a silane coupling agent, 1-3 parts of tear-resistant resin, 1.5-2 parts of stearic acid, 2-3 parts of zinc oxide, 2-5 parts of an anti-aging agent, 1-2 parts of protective wax, 1-2 parts of an accelerant and 1-2 parts of sulfur. According to the invention, a ternary polymer matrix of natural rubber / emulsion polymerized styrene-butadiene rubber / butadiene rubber is adopted to balance strength, rigidity and toughness, a ternary composite reinforcing system taking carbon black as a main body, a small amount of white carbon black as an auxiliary and carbon nanotubes as a key reinforcing phase is constructed, and the problem of dispersion of the carbon nanotubes is effectively solved by utilizing a multi-section mixing process.

The invention relates to a preparation method of a gel polymer electrolyte and the gel polymer electrolyte, and the method comprises the following steps: dissolving a polymer matrix in a fluorinated solvent, and adding a lithium salt, an initiator and an additive into the fluorinated solvent; stirring the fluorinated solvent through an ultrasonic dispersion technology to form a homogeneous precursor solution; injecting the precursor solution into a battery shell, carrying out thermal polymerization at a preset polymerization temperature for a preset polymerization time, and forming an electrolyte membrane with a three-dimensional cross-linked network structure in the battery shell; after a residual solvent in a battery shell is removed through vacuum drying, an electrolyte membrane with a three-dimensional cross-linked network structure is used as a flexible self-supporting gel polymer electrolyte. The gel polymer electrolyte is an electrolyte membrane with a three-dimensional cross-linked network structure, can inhibit the growth of lithium dendrites and improve the ion migration efficiency, is superior to the existing electrolyte in ionic conductivity and Li < + > transference number, and is suitable for high-energy-density energy storage lithium batteries.

The invention discloses a novel phosphorus-containing macromolecular flame retardant and a preparation method and application thereof, the flame retardant is a polymer with a general formula (I), the main chain of the flame retardant is composed of an olefin-containing phosphonate structural unit, and the side chain R2 is a phosphonate group or a phosphonate metal salt group. The preparation method comprises the following steps: firstly, carrying out reaction on trialkyl phosphite and halogenated olefin containing active groups to efficiently prepare a functional monomer containing polymerizable double bonds and phosphonate side chains; then carrying out free radical polymerization to obtain a macromolecular polymer; the phosphonate can be further partially or completely hydrolyzed and complexed with multivalent metal ions to form the flame retardant with an ionic cross-linked structure. The macromolecular flame retardant is high in phosphorus content, good in thermal stability and excellent in compatibility with a polymer matrix, can play a flame-retardant role in a condensed phase and a gas phase at the same time, and effectively overcomes the problems that a micromolecular flame retardant is easy to migrate and poor in durability, and the mechanical property of a matrix material is reduced. The preparation method is efficient, controllable and suitable for continuous production.

The invention provides nano-modified clay compounded hollow micro-powder and a preparation method thereof. The nano-modified clay compounded hollow micro-powder comprises the following components in percentage by mass: 55%-68% of nano-modified clay, 32%-45% of hollow micro-powder, 0.8%-4% of a functional aid and 0.1%-2% of a coupling enhancer, wherein the nano modified clay is obtained by performing dual modification treatment on natural clay, and the dual modification comprises the following steps: performing intercalation modification, adopting a composite modifier of a silane coupling agent and a titanate coupling agent, and stirring and reacting for 3-6 hours at 60-85 DEG C, the total dosage of the modifier is 3-8% of the mass of the clay; on the basis of intercalation modification, an acrylic monomer is introduced for free radical graft polymerization, and the grafting rate is 5-15%. According to the invention, through gradient compounding of the nano modified clay and the core-shell hollow micro-powder and the synergistic effect of intercalation modification and surface grafting modification, the interlayer spacing of the clay is enlarged to 1.85 nm or more, the specific surface area is increased to 120 m < 2 > / kg, and the interface bonding force with a polymer matrix is significantly enhanced.