127 results about "Polyphosphazene" patented technology

The invention relates to the field of cable materials, and provides a flexible flame-retardant polyolefin insulating material for a high-flexibility drag chain cable and a preparation method thereof.The flexible flame-retardant polyolefin insulating material comprises phosphorus-containing flame retardant surface modified boron nitride, polyphosphazene modified magnesium hydroxide nanowires, polyolefin matrix resin and the like. The phosphorus-containing flame retardant surface modified boron nitride is prepared by carrying out surface modification on hydroxyl modified hexagonal boron nitride through 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and vinyl trimethoxy silane, and shows excellent flame retardant property and flexibility. The polyphosphazene modified magnesium hydroxide nanowire is prepared through silane coupling agent functionalization and polyphosphazene cross-linking polymerization, and has flame retardance and a reinforcing effect. The preparation method of the material comprises the steps of raw material premixing, melt blending, cooling granulation and extrusion molding. The material has the characteristics of flame retardance, high flexibility and the like, and is widely applied to dynamic high-flexibility cables in the fields of industrial automation equipment, robots, machine tool manufacturing, logistics conveying systems and the like.

Disclosed are polymers and polymer compositions comprising metalized polyphosphazene. Also disclosed are polymer electrolytes comprising the disclosed herein polymers and polymer compositions, and film separators comprising polymers and polymer compositions. Also disclosed are batteries comprising an anode, a cathode and polymer electrolytes. Disclosed are also methods of making polymers, polymer compositions, and batteries.

The invention relates to the technical field of refractory materials, in particular to a waste magnesia-calcium brick-containing refractory material and a preparation method thereof, and the waste magnesia-calcium brick-containing refractory material comprises the following components: composite aggregate, calcium aluminate cement, urea resin-aluminum dihydrogen phosphate, active alpha-Al2O3 micro powder, silica micro powder and sodium tripolyphosphate. In the room-temperature spraying maintenance and low-temperature working stage, hydration of free CaO in the waste magnesia-calcium bricks and erosion of OH <-> are prevented through the hydrophobic effect of fluorinated polyphosphazene and modified zirconium oxide sol, and the compatibility and wettability of the composite aggregate and cement paste are improved through carboxylic acid groups of carboxyethyl silanetriol and polyethylene glycol monomethyl ether. According to the present invention, with the temperature rising, the aluminum dihydrogen phosphate forms the viscous liquid phase to wrap the aggregate so as to provide the temporary protection, the temperature continues to rise, the zirconium oxide and the nanometer Al2O3 react with the CaO and the MgO to generate the CaZrO3 and the MgAl2O3, the aluminum dihydrogen phosphate reacts with the nanometer Al2O3 in the system to generate the AlPO4, and the CaZrO3, the MgAl2O3 and the AlPO4 form the multi-phase fire-resistant structure so as to further improve the fire resistance of the fire-resistant material;

The invention belongs to the technical field of high polymer materials, and particularly relates to a high-performance polymer material and application thereof in battery protection. The high-performance polymer material comprises a component A and a component B. The component A is prepared from the following raw materials in parts by weight: 60-80 parts of polyoxypropylene polyol D3000; 20 to 40 parts of polyether polyol 4110; 40 to 60 parts of isocyanate; the component B is prepared from the following raw materials in parts by weight: 50 to 70 parts of amino-terminated polyether; 40 to 50 parts of a chain extender; 1-3 parts of a dispersant; 2-4 parts of a defoaming agent; 4-8 parts of a flame retardant compound A; 3 to 7 parts of a polyphosphazene coated Ce doped g-C3N4 composite material; and 2 to 6 parts of a Cu-MOF material. The flame retardant compound A is self-made and added in the preparation process, and is matched with the polyphosphazene-coated Ce-doped g-C3N4 composite material and the Cu-MOF material, so that the flame retardant property of the polymer material is improved, the flame retardant property of the polymer material is also improved, and a good protection effect can be achieved in battery protection.

The invention discloses organosilicone cyclophosphazene modified epoxy resin and a preparation method thereof, belongs to the field of flame-retardant materials, and particularly relates to a preparation method of an organosilicone cyclophosphazene flame retardant and a preparation method of the organosilicone cyclophosphazene modified epoxy resin. The invention aims to research and develop a synergistic composite flame retardant of three elements of N, P and Si by optimizing the structure of the flame retardant and solve the problem of low flame retardant efficiency of the flame retardant. The preparation method comprises the following steps: taking hexachlorotripolyphosphazene, p-hydroxybenzaldehyde, p-aminobenzoic acid, DOPO and triphenylsilanol as raw materials, and carrying out substitution, dehydration condensation, addition and esterification to obtain the organic silicon cyclophosphazene flame retardant. The modified epoxy resin is obtained by taking m-phenylenediamine as a curing agent and adding organosilicone cyclophosphazene flame retardants in different proportions. The organosilicone cyclophosphazene modified epoxy resin provided by the invention reaches the standard of a flame-retardant material, and the limit oxygen index is up to 31.6%, which passes a UL-94 test.

The invention provides a method for preparing a nitrogen, phosphorus and sulfur tri-doped hollow carbon nanocage material derived from a covalent triazine polymer. The method comprises the following steps: by taking zinc nitrate hexahydrate and 2-methylimidazole as reactants and methanol as a solvent, stirring at room temperature to synthesize ZIF-8; the preparation method comprises the following steps: by taking phosphonitrilic chloride trimer and bisphenol S as monomers and ZIF-8 as a template agent, carrying out polymerization under the induction of an N, N-diisopropylethylamine initiator so as to generate ZIF-8 (at) PZS; and performing high-temperature pyrolysis to synthesize the nitrogen, phosphorus and sulfur triple-doped hollow carbon nanocage material. The invention also discusses the application of the nitrogen, phosphorus and sulfur tri-doped hollow carbon nanocage material in an air electrode material of a zinc-air battery. Meanwhile, the conductivity and the oxygen reduction reaction electro-catalytic performance of the obtained carbon material are remarkably improved through the nitrogen, phosphorus and sulfur doped synergistic effect, the half-wave potential of the carbon material reaches up to 0.85 V vs. RHE, and the limiting current density can reach 5.19 mA cm. A zinc-air battery assembled by using the material as an air electrode shows high peak power density of 194 mW cm.

The invention relates to the field of electric wires and cables, and discloses a high-temperature-oxidation-resistant flame-retardant electric wire and cable and a preparation method thereof.The sheath layer of the electric wire and cable comprises low-density polyethylene, nitrile rubber, natural rubber, ethylene-tetrafluoroethylene copolymer, modified multi-walled carbon nanotubes, modified nano titanium dioxide and auxiliaries; the modified multi-walled carbon nanotube is prepared by reacting an acylating chlorination multi-walled carbon nanotube with a polycyclotriphosphazene derivative; the polycyclotriphosphazene derivative is prepared by reacting hexachlorocyclotriphosphazene with p-aminodiphenylamine and then taking diphenyl dihydroxysilane as a linker; the modified nano titanium dioxide is prepared by the following steps: substituting phenylphosphoryl dichloride with phloroglucinol, then sequentially substituting with 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and 3-aminopropyltriethoxysilane, and grafting an obtained antioxidant phosphorus-containing coupling agent with nano titanium dioxide. The sheath layer material prepared by the invention has excellent high-temperature oxidation resistance, flame retardance, wear resistance and heat resistance.

The invention belongs to the technical field of polyurethane materials, and particularly relates to a tripolyphosphazene derivative and a preparation method and application thereof, castor oil-based phosphorus-containing polyester polyol and a preparation method thereof, and a flame-retardant polyurethane material. The tripolyphosphazene derivative provided by the invention has a structure as shown in a formula I. The tripolyphosphazene derivative provided by the invention does not contain metal elements, and has the characteristics of high catalytic efficiency, low reaction temperature and good selectivity when being used as a catalyst for preparing castor oil-based polyol. Meanwhile, the tripolyphosphazene derivative provided by the invention does not need to be subsequently separated when being used as a catalyst for preparing the castor oil-based polyol, can be used as a flame retardant for improving the flame retardant property of the castor oil-based polyol, has good compatibility with the castor oil-based polyol, and does not influence the performance of a subsequent polyurethane product.

The invention belongs to the field of flame retardance of high polymer materials, and relates to a preparation method of a metal organic framework polyphosphazene flame retardant and application of the flame retardant in PET flame retardant modification.The preparation method comprises the steps that a metal salt solution and a phytic acid solution are mixed according to the molar ratio of (3-15): 1, the pH is adjusted to 7-8, alcohol is added for a reaction, and phytic acid-based MOFs are obtained; mixing the phytic acid-based MOFs with a 4, 4 '-disubstituted diphenyl compound, triethylamine and alcohol to obtain a second mixed solution; hexachlorocyclotriphosphazene (HCCP) is mixed with the second mixed solution, the molar ratio of the 4, 4 '-disubstituted diphenyl compound to the HCCP is (2-4): 1, the mixture reacts at the temperature of 20-90 DEG C, and the phytic acid group MOFs (at) HCCP is obtained. HCCP is hybridized on the surface of phytic acid-based MOFs, and the flame retardant has excellent flame retardance and environmental protection performance by utilizing the char-forming catalytic capability of the phytic acid-based MOFs and the phosphorus-nitrogen flame retardance characteristic of HCCP.

The invention relates to a composite lithium battery diaphragm and a preparation method thereof, and belongs to the technical field of lithium batteries. The composite lithium battery diaphragm comprises a polymer base membrane; and the material of the coating comprises a natural clay mineral nanotube and a polyphosphazene resin microsphere. According to the composite lithium battery diaphragm disclosed by the invention, the coating comprises the natural clay mineral nanotube and the polyphosphazene resin microspheres, and the volume change rate of the coating at a high temperature is small, so that the thermal shrinkage of the composite lithium battery diaphragm is reduced; due to the synergistic flame-retardant effect of the natural clay mineral nanotubes and the polyphosphazene resin microspheres, the inflammability of the composite lithium battery diaphragm is improved, and the composite lithium battery diaphragm can be self-extinguished after being ignited; the coating formed by the natural clay mineral nanotubes and the polyphosphazene resin microspheres has abundant pore channels and pores and can absorb a large amount of electrolyte, so that the composite lithium battery diaphragm has high affinity to the electrolyte and high ionic conductivity.

The invention discloses a polyphosphazene flame-retardant electrolyte, a lithium ion battery containing the electrolyte and a preparation method of the lithium ion battery, and belongs to the technical field of lithium ion batteries. The electrolyte comprises a lithium salt, an organic solvent, a cosolvent, an additive, a cross-linking agent, a polymer monomer and a polymerization initiator, and is prepared in an in-situ or ex-situ polymerization mode. According to the polymer electrolyte or gel electrolyte provided by the invention, on the basis of various flame-retardant mechanisms of a phosphazene structure and a polymer network structure of a three-dimensional network structure, the overall thermal stability is improved, the intrinsic safety of a battery is improved, the safety risk caused by abuse, overcharge and overdischarge, needling, collision and the like is reduced, and the service life of the battery is prolonged. And a new direction is provided for further developing a multi-element composite flame-retardant material and promoting the safety of a lithium ion battery.

The invention discloses a bio-based core-shell flame retardant, a preparation method thereof and a preparation method of a composite material. A novel biomass-based polyphosphazene flame-retardant microsphere (PHRB) is prepared based on a condensation reaction of biomass resveratrol and phosphonitrilic chloride trimer, a self-sacrifice template method is further adopted, three-dimensional (3D) cobalt layered double hydroxide (Co-LDH) grows on the surface of the microsphere in situ, and the 3D bio-based Co-LDH-PHR flame retardant with a core-shell structure is successfully constructed. The bio-based core-shell flame retardant obtained in the invention has good thermal stability, high residual carbon content, high flame retardant efficiency and good compatibility with a base material, and the flame-retardant polyurea composite material prepared from the bio-based core-shell flame retardant as a raw material still has excellent mechanical properties. The bio-based core-shell flame retardant disclosed by the invention is wide in raw material source, relatively low in cost, simple in synthesis mode, convenient to operate and easy for large-scale production.

The invention provides an antibacterial compatilizer as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The antibacterial compatilizer I is prepared from a polyolefin elastomer, an antibacterial agent, a first grafting monomer and an initiator through a cross-linking reaction; the antibacterial agent and the first grafting monomer are respectively grafted on a long chain of the polyolefin elastomer; the antibacterial agent is prepared by carrying out esterification reaction on a second grafting monomer and hydroxyl on the surface of the nano metal oxide coated polyphosphazene microsphere; the first grafting monomer is maleic anhydride or cis-1, 2, 3, 6-tetrahydrophthalic anhydride, and the second grafting monomer is maleic anhydride or cis-1, 2, 3, 6-tetrahydrophthalic anhydride. According to the invention, the nano metal oxide coated polyphosphazene microspheres are grafted with the grafting monomer, and then the grafted nano metal oxide coated polyphosphazene microspheres, the POE and the grafting monomer are subjected to a cross-linking reaction, so that the compatilizer and the antibacterial agent form an integral structure, the problem of poor compatibility of the antibacterial agent and a nylon material is solved, and the problem of short antibacterial time of the nylon material is solved; therefore, the nylon material has antibacterial performance in the whole service period.

The invention discloses a reinforced flame-retardant PC composite material and a preparation method thereof, and relates to the technical field of composite materials. Comprising the following raw materials in parts by weight: 80 parts of PC resin, 10-20 parts of hydroxyl-terminated hyperbranched polycarbonate, 5-8 parts of a micro-crosslinking agent, 3-5 parts of a coupling agent, 25-35 parts of a filler, 5-8 parts of hyperbranched tripolyphosphazene terpyridyl CTP-TPY, 2-4 parts of a compatilizer, 0.3-0.6 part of an antioxidant, 0.3-0.6 part of a lubricant, 0.8-1.2 parts of an initiator and 1-3 parts of 9, 10-di-tert-butyl-4-methylphenol. The invention relates to a high-temperature-resistant anti-corrosion coating which is prepared from the following components in parts by weight: 2-6 parts of 2-acrylamido-2-methylpropanesulfonic acid, 2-4 parts of 1, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 1-3 parts of octaphenylcyclotetrasiloxane, 4-6 parts of 2-acrylamido-2-methylpropanesulfonic acid and 0.8-1.2 parts of a catalyst. The reinforced flame-retardant PC composite material is good in mechanical property and excellent in flame retardance, impact toughness and weather resistance.

The invention discloses a polyphosphazene covalent triazine (at) LDH composite flame retardant and a preparation method and application thereof, the composite flame retardant comprises polyphosphazene covalent triazine polymer microspheres and Co-Cu layered double hydroxides coating the surfaces of the polyphosphazene covalent triazine polymer microspheres, the Co-Cu layered double hydroxides are grown on the polyphosphazene covalent triazine polymer microspheres in situ through a one-step hydrothermal method, and the Co-Cu layered double hydroxides / polyphosphazene covalent triazine polymer microspheres are prepared. The composite flame retardant is simple and efficient in synthesis method, high in thermal stability and stable in physical and chemical properties; more importantly, under the synergistic effect of the material and the structure, the composite flame retardant is doped into an epoxy resin material in a physical blending manner, so that the heat release rate, the total heat release amount and the smoke release amount of the material during combustion can be effectively reduced, the heat release rate, the total heat release amount and the smoke release amount reach the V-0 level in a UL94 test, reburning can be effectively prevented, and the service life of the material is prolonged. The tensile property and the impact property of the epoxy resin composite material are further improved.

The invention discloses a preparation method of a flame-retardant solid polymer electrolyte and application thereof in a lithium battery, and belongs to the field of lithium batteries. The specific preparation process of the flame-retardant solid polymer electrolyte comprises the following steps: dissolving trifluoro and octafluoro nucleophilic reagents and dichloropolyphosphazene in tetrahydrofuran, and carrying out nucleophilic substitution reaction to generate a linear trifluoro and octafluoro substituted phosphazene polymer FPZ; then, FPZ is added into a polyvinylidene fluoride-hexafluoropropylene mixed solution dissolved by ethylene glycol dimethyl ether, and the flame-retardant solid polymer electrolyte is obtained. The preparation raw materials of the flame-retardant solid polymer electrolyte also comprise an inorganic filler and a lithium salt. According to the invention, polyphosphazene is used as a flame retardant, the fluorinated structure of polyphosphazene enhances the compatibility with polyvinylidene fluoride-hexafluoropropylene, weakens the interaction with lithium ions, promotes the formation of an inorganic fluorinated SEI layer, and effectively inhibits the growth of lithium dendrites. The electrolyte provided by the invention has excellent flame retardant property and conductivity.

A composite lithium battery separator, comprising a polymer-based film and a coating that coats the polymer-based film, wherein the material of the coating comprises natural clay mineral nanotubes and polyphosphazene resin microspheres.

The invention relates to an environment-friendly insulated cable material and a preparation method thereof, and the material is prepared by taking poly (terephthalic acid-adipic acid-butanediol copolyester) (PBAT), polyethylene-vinyl acetate copolymer (EVA) and maleic anhydride grafted low-density polyethylene (LDPE-g-MAH) as matrixes, the composite modified filler is prepared from zinc borate powder with the surface modified by aminopropyl, a graphene oxide-block polyether grafted hybrid, titanate coupling treatment silicon microspheres, a microencapsulated polyether type phase change material, a polyphosphazene flame retardant, cerium-doped nano titanium dioxide and a photosensitive free radical initiator; the preparation method comprises the steps of in-situ modification, grafting hybridization, micro-capsule coating with an interfacial polymerization method and the like, and efficient synergy is achieved through multiphase dispersion and ultraviolet crosslinking. The material has excellent thermal stability, flame retardance and flexibility, has green and degradable characteristics, is suitable for high-performance cable sheaths and insulation structures, and particularly meets the application requirements for low smoke, zero halogen and sustainability.

This invention belongs to the field of polymer materials technology and discloses a carbon fiber reinforced polylactic acid composite material and its preparation method. The composite material includes the following raw materials in parts by weight: polylactic acid, PBAT-g-GMA, modified carbon fiber, modified layered double hydroxide, talc, lubricant, and antioxidant. The modified carbon fiber is formed by coating a polydopamine layer on the surface of carbon fiber through the self-polymerization of dopamine, and then grafting catechol, amino-grafted phytic acid, and cage-like polysilsesquioxane onto the surface of the polydopamine layer. The modified layered double hydroxide is formed by intercalating chitosan through electrostatic interaction, and then modifying polyphosphazene with boric acid by grafting ortho-hydroxyl groups on the chitosan chain. This invention uses polylactic acid as the matrix material and adds PBAT-g-GMA blend to improve the brittleness of polylactic acid and enhance the impact strength of the composite material. By combining modified carbon fiber and modified layered double hydroxide, the tensile strength, flexural strength, and rigidity of the composite material are improved, while also endowing the material with excellent heat resistance and flame retardant properties.

The present disclosure is directed to linear polyphosphazene compounds, including compounds represented by the following chemical formula 1.wherein n can an integer from 1 to 300; MPEG can represent methoxy poly(ethylene glycol) with a molecular weight of 350 to 1000; S can be a space group selected from the group consisting of lysine, arginine, glutamine, asparagine, tyrosine, lysine containing oligopeptide, arginine containing oligopeptide, glutamine containing oligopeptide, asparagine containing oligopeptide, tyrosine containing oligopeptide, amino-ethanol, amino-propanol, amino-butanol, amino-pentanol, and amino-hexanol; 1 may equal to 0-0.9 and m may equal to 0.1-1.

The invention discloses a decolorization method of an aryloxy polyphosphazene polymer, and belongs to the technical field of phosphazene rubber. Comprising the following steps: dissolving about 10% of an aryloxy polyphosphazene polymer in a polar organic solvent, such as tetrahydrofuran, dioxane and N, N-dimethylformamide (DMF), strongly stirring until the aryloxy polyphosphazene polymer is completely dissolved, adding 0.5-1% of acidic activated carbon or activated clay, heating to 60-90 DEG C, continuously stirring for 4-6 hours, and then carrying out reduced pressure suction filtration, so as to obtain an aryloxy polyphosphazene polymer; and pouring the obtained filtrate into 2 times of water under a stirring condition, precipitating to separate out wet glue, and carrying out vacuum drying on the wet glue at 80 DEG C for 3 days to obtain the aryloxy polyphosphazene polymer. The method is simple, effective and high in practicability.

The application belongs to the technical field of lithium ion batteries, and discloses a poly-m-phenylene isophthalamide-based electrostatic spinning flame-retardant separator and application thereof. The m-phenylene isophthalamide-based electrostatic spinning separator, namely PMIA-based electrostatic spinning separator, is prepared by mixing modified PZS microspheres, PMIA and an organic solvent, and then adopting an electrostatic spinning method. The modified PZS microspheres are prepared by in-situ growth of an inorganic layer SiO2 on the surface of polyphosphazene PZS microspheres with flame-retardant properties. The polyphosphazene PZS microspheres are prepared by a polymerization reaction between tannic acid and hexachlorocyclotriphosphazene. The spinning separator prepared by the application has very excellent porosity, liquid absorption rate and ionic conductivity, and good thermal stability and flame retardancy.

The present invention relates to the technical field of carbon nanotube modification, specifically a flame-retardant carbon nanotube conductive material and a preparation process thereof. The method comprises the following steps: S1: reacting chlorinated carbon nanotubes with 4-aminobenzophenone and DOPO in sequence to obtain DOPO-carbon nanotubes; S2: reacting chain polyphosphazenes with (1-hydroxyallyl)trimethylsilane and oxetane-3-thiol in sequence to obtain oxacyclic-chain polyphosphazenes; and S3: mixing DOPO-carbon nanotubes, oxacyclic-chain polyphosphazenes, and pyrrole to prepare the flame-retardant carbon nanotube conductive material.

The invention belongs to the technical field of batteries, and particularly relates to a positive pole piece and a preparation method and application thereof. The positive pole piece comprises a current collector, and a first positive slurry coating and a second positive slurry coating which are sequentially coated on the current collector, and the second positive electrode slurry coating comprises the following raw materials: an oxide solid electrolyte, a polyphosphazene compound, a second binder and a second solvent. The positive pole piece has the beneficial effects that the positive pole piece can effectively prevent heat diffusion in the battery, can avoid thermal runaway of the battery, and effectively improves the safety performance of the battery under the condition of not influencing the performance of the battery.

The invention relates to the technical field of high polymer materials, in particular to dopamine cross-linked polyphosphazene microspheres with double functional groups and preparation and application thereof. The specific structure is as follows. The preparation method comprises the following steps: respectively adding phosphonitrilic chloride trimer and dopamine hydrochloride into a solvent to obtain a solution a and a solution b; slowly dropwise adding the solution b into the solution a while stirring for continuous reaction; after the reaction is finished, centrifuging, washing and drying to obtain the dopamine cross-linked polyphosphazene microspheres with the difunctional groups. A cross-linked structure is formed through stepwise polymerization of dopamine and phosphonitrilic chloride trimer, oxidative polymerization of a single dopamine structure is avoided, the stability of active groups is improved, phenolic hydroxyl groups and amino groups are introduced into cyclic cross-linked polyphosphazene at the same time, and the application of the cyclic cross-linked polyphosphazene adsorbent in the aspect of complex printing and dyeing wastewater treatment is improved; the method is suitable for complex wastewater environments.

The invention discloses a high-temperature-resistant TPU material and a preparation method thereof, and relates to the technical field of high polymer materials. When the high-temperature-resistant TPU material is prepared, polyether glycol and toluene-2, 4-diisocyanate are pre-polymerized, and then chain extension is performed by using daidzein dianhydride monomer to prepare functional polyurethane; the polyphosphazene microspheres and 4-allyl-2, 6-di-tert-butylphenol are subjected to a reaction, and modified polyphosphazene microspheres are prepared; the preparation method comprises the following steps: sequentially reacting nano calcium carbonate with chloropropyltriethoxysilane and 3-hydroxy-beta-ionone to obtain modified nano calcium carbonate; and uniformly mixing the functionalized polyurethane, the modified polyphosphazene microspheres and the modified nano calcium carbonate, and performing extrusion molding to obtain the high-temperature-resistant TPU material. The high-temperature-resistant TPU material prepared by the invention has excellent high-temperature resistance, flame retardance and aging resistance.

The invention belongs to the technical field of thermal protection materials for spaceflight and weapons, and particularly relates to hybrid polyphosphazene and a preparation method and application thereof, and a modified ethylene propylene diene monomer material and a preparation method and application thereof. The hybrid polyphosphazene provided by the invention comprises acetenyl aniline polyphosphazene with a structure as shown in a formula 1, naphthylamine polyphosphazene with a structure as shown in a formula 2 or allyl phenoxy polyphosphazene with a structure as shown in a formula 3. The hybrid polyphosphazene provided by the invention is used as a modifier, and a functional group and a phosphorus-nitrogen long chain of the hybrid polyphosphazene can be co-crosslinked with EPDM to construct an interpenetrating network structure so as to improve the mechanical property and ablation resistance of an EPDM heat insulating layer. According to the modified ethylene propylene diene monomer material provided by the invention, the mechanical property, the elasticity and the ablation resistance of the material are remarkably improved on the premise of keeping the density basically unchanged, and the modified ethylene propylene diene monomer material can be widely applied as a heat insulating layer.

To overcome the limitation of application fields caused by the reversible transition according to the temperature change after gel formation by changing the sol-gel transition property of thermosensitive phosphazene-based polymers.SOLUTION: The present invention relates to a thermosensitive hydrogel composition with an altered reversible sol-gel transition character, comprising a polyphosphazene-based polymer that comprises an amino acid ester, polyethylene glycol with controlled length and content, and groups comprising a functional group for the introduction of a functional moiety at an end thereof at a predetermined ratio.SELECTED DRAWING: Figure 1

The application discloses a kind of microporous structure polyphosphazene foam material and its preparation method, the method is to be mixed with the mechanical stirring in organic solvent by polyphosphazene, vulcanizing agent, the ring crosslinking polyphosphazene microspheres of load foaming agent, after removing solvent, it is prepared by heat pressing pre-curing, foaming and post-curing to obtain microporous polyphosphazene foam material.The method of the application adds the ring crosslinking polyphosphazene microspheres of load foaming agent with foaming agent, heterogeneous nucleating agent and flame retardant effect, realizes the improvement of matrix foaming performance, and improves the flame retardancy of polyphosphazene foam at the same time;By controlling pre-curing condition, the content of ring crosslinking polyphosphazene microspheres of load foaming agent and post-curing condition, matrix crosslinking density, gas evolution and heterogeneous nucleation site number and cell growth process are regulated, and the cell morphology of polyphosphazene foam material can be effectively controlled.

A rechargeable lithium battery comprising an anode, a cathode, and a quasi-solid or solid-state electrolyte in ionic communication with the anode and the cathode, wherein the electrolyte comprises a polyphosphazene polymer and a lithium salt dissolved or dispersed in the polymer, wherein the lithium salt occupies a weight fraction from 0.1% to 50% based on the total weight of the lithium salt and the polyphosphazene polymer combined; wherein the polyphosphazene polymer permeates into the anode and / or the cathode and in physical contact with the anode active material inside the anode and / or in physical contact with or chemically bonded to the cathode active material inside the cathode; and wherein the electrolyte further comprises from 0% to 50% by weight of a non-aqueous liquid solvent dispersed in the polymer, based on the total weight of the lithium salt, the polymer, and the non-aqueous liquid solvent combined.