21 results about "Poly(phosphazene)" patented technology

The invention discloses flame-retardant hard foam polyether polyol ester as well as a preparation method and application thereof. The preparation method of the polyether polyol ester comprises the following steps: taking hexachlorotripolyphosphazene and hydroxy acid as raw materials, and reacting under the action of a metal chloride catalyst to obtain an intermediate; and carrying out polymerization reaction on the intermediate serving as an initiator and oxyalkylene under the action of a polymerization catalyst to prepare the polyether polyol ester. The polyether polyol ester is prepared by taking a reactant of phosphonitrilic chloride trimer and hydroxy acid as an initiator and carrying out polymerization reaction with oxyalkylene, and the prepared foam has higher flame retardance and foam strength due to the particularity of a molecular structure.

This invention discloses a PP-based battery cell lead terminal material containing modified insulating and thermally conductive filler and its preparation method, relating to the field of polymer composite materials technology. The material comprises polypropylene, modified thermally conductive and insulating filler, thermal stabilizer, plasticizer, antioxidant, and lubricant. The modified thermally conductive and insulating filler consists of a point-sheet-wire synergistic thermally conductive framework composed of spherical α-alumina, hydroxylated hexagonal boron nitride nanosheets, and silicon nitride whiskers, sequentially forming a polydopamine anchoring layer, a magnesium-aluminum layered double hydroxide insulating locking layer, a polyphosphazene-siloxane-POSS composite shell, and a maleic anhydride-grafted polypropylene wax compatible coating layer. The resulting material possesses thermal conductivity, insulation, flame retardancy, heat resistance, mechanical stability, and processing performance, making it suitable for battery cell lead terminals and their surrounding insulating and thermally conductive structural components.

The invention belongs to the field of electronic component materials, and discloses UV curing slurry for a first protective layer of a chip resistor and a preparation method of the UV curing slurry. The UV curing slurry is prepared from the following raw materials in parts by weight: 30 to 50 parts of silicon-containing epoxy acrylate resin, 10 to 20 parts of polyurethane acrylate resin, 10 to 20 parts of modified polyphosphazene resin, 15 to 25 parts of reactive diluent, 5 to 8 parts of photoinitiator, 5 to 10 parts of composite boron nitride powder, 5 to 10 parts of inorganic filler, 0.1 to 1 part of wetting agent, 0.1 to 1 part of flatting agent and 0.5 to 2 parts of adhesion promoter, the protective layer formed by curing the slurry has the advantages of high hardness, high heat resistance and excellent insulating property.

A ternary blended positive electrode material and a preparation method thereof and a battery are provided. The preparation method includes mixing a ternary material, a lithium manganese iron phosphate material and a coating material, and performing high-energy ball milling on the obtained mixture to obtain the ternary blended positive electrode material. The coating material includes a polyphosphazene intermediate. Through high-energy ball milling, the ternary material and the lithium manganese iron phosphate material are uniformly mixed together, and due to the high ball milling efficiency, the ball-milled particles have a finer size and the mixing is more uniform, thus improving the compactness of the ternary material and the lithium manganese iron phosphate material and the electrical conductivity of the material. Meanwhile, by adopting the polyphosphazene intermediate as the coating material, the obtained ternary blended positive electrode material has a ultra-thin coating layer that blocks the direct contact between an electrolyte and the positive electrode material in the circulation process, thereby providing stability.

The invention discloses a polyphosphazene modified battery diaphragm material with an ion regulation and control function. The polyphosphazene modified battery diaphragm material is obtained by modifying a battery diaphragm base material through polyphosphazene containing a functional group X, the functional group X is selected from one of an alkoxy group, an aryloxy group, a fluorine-containing alkoxy group, a fluorine-containing aryloxy group, a thiol group and a carboxyl group, and the polyphosphazene is linear polydichlorophosphazene prepared by thermally polymerizing phosphonitrilic chloride trimer at 230-300 DEG C for 24-48 hours under the protection of argon; the polyphosphazene containing the functional group X is prepared by carrying out nucleophilic substitution reaction on the functional group X and linear polydichlorophosphazene, and is marked as PZ-X polyphosphazene. The polyphosphazene modified battery diaphragm material disclosed by the invention can regulate and control ion distribution and realize uniform transmission of Li < + > in the diaphragm, so that the growth of lithium dendrites is effectively inhibited, and the electrochemical performance, the cycling stability and the safety level of a battery are remarkably improved.

The present invention provides a hydrogel for comprising a biodegradable polyphosphazene polymer, a radiation-sensitive diselenide cross-linker; and one or more payloads releasably loaded within the hydrogel. The present invention further provides methods for radiosensitizing target tissues such as tumors and providing sustained delivery of therapeutics triggered by irradiation. In another aspect, the present invention provides a method that includes: introducing the hydrogel, as describes herein, adjacent to malignant or marginal tissue; and administering radiation to the hydrogel, thereby disrupting the selenocystamine cross-linkers and releasing the one or more payloads.

The invention belongs to the technical field of high polymer materials, and discloses a carbon fiber reinforced polylactic acid composite material and a preparation method thereof, the composite material comprises the following raw materials by weight: polylactic acid, PBAT-g-GMA, modified carbon fiber, modified layered double hydroxide, talcum powder, a lubricant and an antioxidant; the modified carbon fiber is prepared by coating the surface of carbon fiber with a polydopamine layer through auto-polymerization of dopamine, and then carrying out surface catechol, amino-grafted phytic acid and polyhedral oligomeric silsesquioxane through the polydopamine layer; the modified layered double hydroxide is prepared by intercalating chitosan through electrostatic interaction, and then grafting boric acid modified polyphosphazene by utilizing ortho-hydroxyl on a chitosan chain; the polylactic acid is used as a base material, PBAT-g-GMA is added for blending, the brittleness of the polylactic acid is improved, the impact strength of the composite material is improved, the tensile strength, bending strength and rigidity of the composite material are improved through compounding of the modified carbon fibers and the modified layered double hydroxides, and meanwhile the material is endowed with excellent heat resistance and flame retardance.

The invention relates to the technical field of regenerated rubber production, in particular to heat-resistant regenerated rubber. The composite material is prepared from the following components in parts by weight: 60-80 parts of waste rubber powder, 15-30 parts of ethylene propylene diene monomer, 5-10 parts of silane modified graphene / nano silicon dioxide composite filler, 3-8 parts of N-phenylmaleimide-glycidyl methacrylate copolymer heat-resistant agent, 5-12 parts of polyphosphazene elastomer, 1-3 parts of vulcanizing agent, 0.5-2 parts of accelerant, 1-3 parts of active agent and 1-3 parts of anti-aging agent. The waste rubber powder is subjected to ozone-microwave synergistic treatment, and the composite filler is modified through a silane coupling agent; the vulcanizing agent is a ternary compound of dicumyl peroxide, sulfur and 2-mercaptobenzothiazole, and the anti-aging agent is a compound of 4010NA, RD and 2, 6-butylated hydroxytoluene. Through multi-component collaborative design and process optimization, the mechanical property, heat resistance, heat conductivity and aging resistance of the material are improved, the problems that traditional regenerated rubber is unbalanced in rigidity and toughness, poor in heat resistance and the like are solved, and the comprehensive performance is excellent.

The invention relates to the technical field of nano materials, in particular to a high-dispersion metal phosphide catalyst as well as a green preparation method and application thereof. The preparation method comprises the following steps: firstly, carrying out solid-state reaction on a polycyclic aromatic amine substance and polyphosphazene to generate a phosphazene-containing covalent organic polymer, then immersing the phosphazene-containing covalent organic polymer into a metal precursor aqueous solution, and adsorbing metal ions onto the phosphazene-based covalent organic polymer material; and finally, calcining the material in an inert atmosphere to obtain the metal phosphide material highly dispersed on carbon. The method is simple, only a small amount of solvent is used, and no toxic gas is generated. The high-dispersion metal phosphide material can be used as an efficient catalyst for electro-catalytic hydrogen evolution or oxygen evolution, and shows excellent catalytic performance.

This invention discloses a macromolecular JAK inhibitor, its preparation method, and its applications. This macromolecular JAK inhibitor is an anti-inflammatory amphiphilic polymer of hexachlorocyclotriphosphazene or cyanuric chloride coupled with different functional groups. The anti-inflammatory amphiphilic polymer is synthesized with hexachlorocyclotriphosphazene or cyanuric chloride as the backbone structure, linked by a stepwise nucleophilic substitution reaction with different proportions of hydrophilic modules polyethylene glycol and 3-aminobenzoyl hydrazide (i.e., luminol). The preparation method of this type of anti-inflammatory macromolecular drug is simple, its structure and function are controllable, and it is easy to synthesize on a large scale. Furthermore, this type of amphiphilic anti-inflammatory macromolecular drug can self-assemble into nanomicelles in aqueous solution through intermolecular interactions. It can be applied to the treatment of various acute and chronic inflammations or diseases related to the JAK signaling pathway, and can be administered via intravenous injection, subcutaneous injection, nebulized inhalation, intramuscular injection, and any combination of the above methods. This anti-inflammatory macromolecular drug has significant therapeutic effects in acute lung injury, acute kidney injury, acute liver failure, sepsis, and asthma.

The invention discloses a ceramic polyphosphazene composite material for power battery heat insulation and a preparation method thereof, and belongs to the field of battery heat insulation. Comprising the following raw materials: polyphosphazene rubber, fibers, a heat insulation agent and a compound fluxing agent, the heat insulation agent is selected from wollastonite powder, mica powder and other ceramizable fillers, and the heat insulation performance of the polyphosphazene composite material is further improved; the preparation method has the further contribution that high-performance fibers and a compound fluxing agent are introduced, so that the ablation resistance of the polyphosphazene composite material is improved, and the flame retardance is further improved. Tests show that the obtained ceramic polyphosphazene composite material is excellent in comprehensive performance, and excellent and reliable in mechanical property, heat insulation performance, thermal deformation resistance, heat insulation performance under actual high-temperature flames and burn-through resistance.

This invention provides a battery cell, its preparation method, and its application. The battery cell includes a composite separator, which comprises a base film and a flame-retardant functional layer. The raw materials for the flame-retardant functional layer include functionalized polyphosphazene monomers, multifunctional crosslinking agents, photoinitiators, and optional functional additives. The functionalized polyphosphazene monomers include a chlorophosphazene backbone and substituents bonded to the backbone. The first substituent includes an aliphatic group containing unsaturated double bonds, and the second substituent includes an aromatic oxy group and / or a fluoroalkoxy group. This invention constructs a UV-cured crosslinked polyphosphazene flame-retardant functional layer on the separator surface. Under normal operating temperatures, it acts as an inert functional coating and does not affect the battery's electrochemical performance. However, under thermal runaway conditions, it undergoes thermal decomposition, releasing phosphorus-containing active species into the gas phase. This releases key free radicals in the combustion chain reaction, thereby implementing flame suppression at the chemical level and significantly improving the battery's safety margin under thermal runaway scenarios.

The present application relates to a kind of polyorganosilicon cyclotriphosphazene modified epoxy resin and its preparation method, belong to flame-retardant material field, wherein the preparation method of polyorganosilicon cyclotriphosphazene flame retardant: with hexachlorotriphosphazene, p-hydroxy benzaldehyde, p-aminobenzoic acid, DOPO and diphenylsilanediol as raw material, by four-step reaction is made.Then the preparation method of epoxy resin with flame retardant as modifier: m-phenylenediamine is curing agent, add a series of gradient polyorganosilicon cyclotriphosphazene flame retardant to epoxy resin, after two times of curing, modified epoxy resin is obtained.The present application is mainly used for preparing polyorganosilicon cyclotriphosphazene flame retardant and polyorganosilicon cyclotriphosphazene modified epoxy resin.

This invention belongs to the field of energy storage materials technology and discloses a method for preparing an asymmetric coordinated iron single-atom catalyst. Addressing the problems of severe polyiodide shuttle effect, slow iodine conversion kinetics, and insufficient catalytic performance of traditional single-atom catalysts in existing zinc-iodine batteries, this invention uses polystyrene as a template, modifies and coats it with dopamine, and uses FeCl3, thiourea, and hexachlorotriphosphazene as precursors for Fe, S, and P, respectively, successfully preparing a PS@PDA-FeSP precursor. Subsequently, a template-assisted high-temperature decomposition method is used to obtain an asymmetric coordinated iron single-atom catalyst. Results show that zinc-iodine batteries assembled using this catalyst exhibit high specific capacitance and excellent cycle stability. Furthermore, the preparation process is safe, non-toxic, and low-cost, demonstrating promising application prospects.

Provided are polymers with one or more domains. At least one domain of the polymer is zwitterionic. The zwitterionic domain may be a polyphosphazene having one or more HEPES-based groups. In various examples, the polymer is zwitterionic. The repeat unit in polyphosphazenes has the following general formula:where n is an integer. Each R may be the same or different. The pendant groups are also referred to herein as R and R′. At least one of the zwitterionic group may have the following structure:or a protonated or deprotonated form thereof. Also provided are methods of making and using the polymers of the present disclosure.

The present invention relates generally to hybrid polymer (e.g., polyphosphazene) based drug delivery platforms and to methods of producing, evaluating, administering, and treating subjects with the same. More particularly, the present invention provides polyphosphazene based drug delivery platforms comprising one or more polyphosphazenes with controlled molecular weights and / or polydispersities as well as selective methods for associating one or more therapeutic drug (or prodrug) substances to the polyphosphazenes.

The application provides preparation and application of a polyphosphazene-based hydrogel with inherent antibacterial property, which is prepared by modifying polyphosphazene with ethyl bromoacetate to obtain a quaternary ammonium salt grafted polymer PZBA, and is formed by crosslinking of the quaternary ammonium salt grafted polyphosphazene-based polymer (PZBA) and polyvinyl alcohol (PVA). The polyphosphazene-based hydrogel (PZBA-PVA hydrogel) of the application can down-regulate pro-inflammatory cytokines, has an anti-inflammatory effect, and up-regulates the expression level of growth factors to promote tissue regeneration. The hydrogel prepared by the application has good tissue adhesion, biocompatibility and antibacterial property, plays an antibacterial and wound healing promoting role on infected wounds, and can be used for preparing antibacterial and wound healing promoting drugs.

Provided herein are broadly applicable polyphosphazene adjuvanted dissolvable microneedle patch-based thermostable and needle-free skin-targeted vaccines.

The invention provides a modified sulfide solid electrolyte as well as a preparation method and application thereof. The modified sulfide solid electrolyte comprises a polyphosphazene coated sulfide solid electrolyte and a functional auxiliary agent formed on the polyphosphazene coated sulfide solid electrolyte. Wherein the functional auxiliary agent comprises a sulfydryl compound and / or an alcoholic hydroxyl compound. According to the invention, polyphosphazene is adopted to coat the sulfide solid-state electrolyte, the functional auxiliary agent is further introduced, and the sulfydryl compound and / or the alcoholic hydroxyl compound are / is crosslinked with polyphosphazene, so that the stability of the sulfide solid-state electrolyte to a lithium metal negative electrode can be enhanced, and the overall performance of the solid-state battery is further improved.

Provided is a lung disease drug delivery carrier. The lung disease drug delivery carrier includes a disc particle having a diameter of 2 μm to 4 μm. The disc particle is injected into the human body. The disc particle includes a polymer selected from the group consisting of polyglycolic acid (PGA), polylactide (PLA), polyglycolide (PG), polyphosphazene, polyiminocarbonate, polyphosphoester, polyanhydride, polyorthoester, and combinations thereof, polylactide-co-glycolide (PLGA), and a drug. The disc particle is decomposed after 24 hours after being injected into the human body and delivers or releases the drug into a lung. The lung disease drug delivery carrier is accumulated in the lung, and the lung disease includes pulmonary fibrosis.