76 results about "Polyphosphazene" patented technology

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 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 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 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.

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.

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 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.

This invention discloses a polyphosphazene / MXene self-supporting electrode loaded with cobalt single atoms, its preparation method, and its application, belonging to the field of seawater uranium extraction technology. Ti3AlC2 powder is etched in an HCl-LiF mixed solution and then ultrasonically exfoliated to obtain Ti3C2T. x Nanosheet suspension; simultaneously, hexachlorocyclotriphosphazene, 4,4'-dihydroxydiphenyl sulfone, and cobalt salt were dissolved in a solvent, and triethylamine was added. A condensation reaction was then carried out under ultrasonication to obtain Co-PZS; then Ti3C2T x After the nanosheet suspension is uniformly mixed with Co-PZS and carbon fiber fabric, it is transferred to a hydrothermal reactor for hydrothermal reaction. The resulting hydrothermal reaction product is then dried and calcined to obtain a polyphosphazene / MXene self-supporting electrode loaded with cobalt single atoms. This electrode is used for the electrochemical adsorption of uranyl ions in the solution system and exhibits excellent comprehensive uranium extraction performance, with advantages such as high capacity, fast rate, strong selectivity, and good stability, meeting the application requirements of seawater uranium extraction.

The present invention belongs to the field of material synthesis and catalysis technology and proposes a cyclotriphosphazene-derived silicon-based solid amine material and its application in catalyzing the coupling of carbon dioxide and epoxide to prepare cyclic carbonates. The present invention uses hexachlorotripolyphosphazene as a raw material to synthesize a silicon source precursor (CPF), then uses a hydrothermal co-condensation method to construct a cyclotriphosphazene-derived mesoporous organosilicon. The cyclotriphosphazene-derived silicon-based solid amine material is then synthesized with polyethyleneimine via an impregnation method. The entire synthesis process is simple, environmentally friendly, and mild. The present invention achieves highly selective catalytic synthesis of cyclic carbonates under solvent-free and co-catalyst-free conditions, while also enabling simple separation and regeneration of the catalyst.

The invention discloses a method and a system for fine utilization of waste silicon powder of a chassis of a reduction furnace, and the method comprises the following steps: adding a certain proportion of polyphosphazene powder into the waste silicon powder of the chassis of the reduction furnace, fully mixing, and uniformly covering the surface of the waste silicon powder of the chassis of the reduction furnace with the polyphosphazene powder to obtain mixed powder; carrying out ashing treatment on the mixed powder under a high-temperature condition, and cooling to obtain carbonized blocks; the carbonized blocks are ground and screened, and oversize powder and undersize powder are obtained; and loading an active substance on the surface of the oversize powder to prepare a silicon-carbon catalyst, soaking the undersize powder in a solvent, cleaning, and drying to prepare the silicon-carbon adsorbent. According to the method, spontaneous combustion prevention and refined utilization of the waste silicon powder of the reduction furnace chassis can be achieved, the safety risk in the polycrystalline silicon production process is reduced, the waste silicon powder of the reduction furnace chassis is converted into a material with certain value and application, resource waste is avoided, cyclic utilization and sustainable development of resources are achieved, and the resource utilization efficiency and economic benefits are improved; and the influence on the environment is reduced.

The application discloses a kind of polyphosphazene proton exchange membrane and its preparation method and application, belong to the field of proton exchange membrane.The application is synthesized by the way of chemical modification and has rigid structure side group sulfonated polydiphenyloxy phosphazene, and it is blended with sulfonated graphene oxide, and polyphosphazene proton exchange membrane is obtained.Sulfonated graphene oxide is used as nano reinforcing body, and strong hydrogen bond and ion interaction are formed between polymer matrix, and stable physical / ionic crosslinking network structure is constructed in microcosmic level.The structure effectively enhances the dimensional stability of membrane, inhibits excessive swelling, and significantly improves the mechanical strength of material.The proton exchange membrane has excellent proton conductivity and low methanol permeability.Compared with existing materials such as single polymer-based film, the proton conduction performance and oxidation stability of the product are significantly improved.

The application discloses a CoP / MoS2-C hollow composite piezoelectric material and a preparation method and application thereof in carbon dioxide catalytic desorption, and the preparation of the CoP / MoS2-C comprises the following steps: in the presence of triethylamine, hexachlorocyclotriphosphazene, bisphenol S and ZIF-67 nanomaterials are subjected to condensation reaction in a solvent under stirring, and the polyphosphazene PZS generated in the reaction is wrapped on the surface of the ZIF-67; the obtained ZIF-67@PZS composite material is placed in a tube furnace and subjected to high-temperature calcination under a nitrogen atmosphere to obtain a hollow CoP / Co2P-C material, then the S source and the Mo source are dispersed in deionized water and stirred uniformly, and then subjected to hydrothermal reaction, and finally, the CoP / MoS2-C hollow composite piezoelectric material is obtained through washing and drying in sequence. The CoP / MoS2-C catalyst prepared by the application can accelerate the desorption rate of CO2 of organic amine, improve the regeneration efficiency of the organic amine loaded with CO2, reduce the regeneration energy consumption, and solve the technical bottleneck of the organic amine capturing CO2.

The invention discloses a CoP / MoS2-C hollow composite piezoelectric material, a preparation method thereof and application of the CoP / MoS2-C hollow composite piezoelectric material in catalytic desorption of carbon dioxide, and the preparation method of the CoP / MoS2-C hollow composite piezoelectric material comprises the following steps: in the presence of triethylamine, carrying out condensation reaction on phosphonitrilic chloride trimer, bisphenol S and a ZIF-67 nano material in a solvent while stirring, and coating the surface of ZIF-67 with polyphosphazene PZS generated by the reaction; and putting the obtained ZIF-67 (at) PZS composite material into a tubular furnace, carrying out high-temperature calcination in a nitrogen atmosphere to obtain a hollow CoP / Co2P-C material, then dispersing the hollow CoP / Co2P-C material, an S source and a Mo source into deionized water, carrying out uniform stirring, carrying out a hydrothermal reaction, and finally, carrying out washing and drying in sequence to obtain the CoP / MoS2-C hollow composite piezoelectric material. The CoP / MoS2-C catalyst prepared by the invention can accelerate the CO2 desorption rate of organic amine, improve the regeneration efficiency of CO2-loaded organic amine, reduce the regeneration energy consumption and solve the technical bottleneck of capturing CO2 by organic amine.

This invention discloses a method for preparing a polyphosphazene-coated boron nitride composite filler and its cable insulation layer material, belonging to the technical field of polymer composite materials and cable insulation materials. First, hexagonal boron nitride is hydroxylated using a mixed acid oxidation method. Then, hexachlorocyclotriphosphazene is polymerized in situ with bisphenol S to construct a polyphosphazene coating layer on the boron nitride surface, obtaining polyphosphazene-coated boron nitride (BN@PZS). Subsequently, bis-epoxy cashew phenol (DEC) is prepared using cashew phenol as a raw material and grafted onto the surface of BN@PZS to obtain a bis-epoxy cashew phenol-grafted polyphosphazene-coated boron nitride composite filler (BN@PZS-DEC). Cable insulation layer material is prepared using HDPE and EVA as matrices, combined with BN@PZS-DEC, BaTiO3, nano-Al2O3, KH-550, antioxidant 1010, and EBS. The polyphosphazene coating imparts excellent flame retardant properties to the material, while the double-epoxy cashew phenol graft structure improves the interfacial compatibility between the filler and the matrix. Boron nitride and nano-Al2O3 synergistically construct a highly efficient thermally conductive network, and BaTiO3 enhances the material's dielectric properties. The resulting composite material possesses excellent thermal conductivity, dielectric properties, flame retardancy, and electrical insulation properties, making it widely applicable in submarine cables, high-voltage transmission cables, and new energy cables.

The application relates to the field of plastic modification, in particular to a polyphosphazene modified polycarbodiimide flame-retardant hydrolysis-resistant agent and a preparation method thereof. PET belongs to flammable materials, and is prone to aging under hydrothermal conditions. In view of the above problems, the application provides a polyphosphazene modified polycarbodiimide flame-retardant hydrolysis-resistant agent, which contains a ring-crosslinked polyphosphazene microsphere structure PHB and a polymerized polycarbodiimide structure PCDI in a molecular structure, the PCDI structure is linked with the PHB microsphere structure through isocyanate groups and hydroxyl groups, the flame-retardant hydrolysis-resistant agent PHB-PCDI obtained by the application is used as an additive of a PET composite material, can significantly improve the flame retardance and hydrolysis resistance of the PET composite material, and the high molecular weight and high crosslinking structure of the flame-retardant hydrolysis-resistant agent make the flame-retardant hydrolysis-resistant agent not easy to migrate out in the subsequent use process, and the flame-retardant hydrolysis-resistant agent has long-acting property.

The invention discloses a thermal insulation material based on thermal response nanoparticles and thermal radiation reflection and a preparation method thereof. Comprising a high-silica glass fiber cloth layer for high-temperature-resistant protection, and an aluminum silicate ceramic fiber felt layer for heat transfer and heat insulation, a polyphosphazene and organic silicon high-temperature adhesive layer for thermal response bonding and an aluminum foil layer for inhibiting thermal radiation reflection which are sequentially arranged in the high-silica glass fiber cloth layer. Efficient heat insulation can be achieved at the high temperature. The heat insulation mechanism is that heat transfer and heat radiation are inhibited; the high silica glass fiber cloth protects the internal structure and provides a high heat-resistant temperature; the aluminum silicate ceramic fiber felt inhibits heat conduction; a layer composed of the aluminum foil, the polyphosphazene and the high-temperature glue inhibits thermal radiation, and the thermal response nanoparticles can enhance the thermal insulation effect after being heated. And the polyphosphazene and the high-temperature glue form a bonding layer which is used for connecting the structures and assisting in shaping. The material is high in strength, heat insulation efficiency and heat-resistant temperature, the preparation process is simple and practical, the problem that heat radiation and heat transfer of a traditional material are difficult to restrain is solved, and a solution is provided for improving the heat insulation efficiency.

The present application relates to waterproof agent emulsion production technical field, specifically waterproof agent emulsion and its preparation method and application, including the following mass fraction of raw materials: PDMS-epoxy modified emulsion: 30-40 parts; PTFE nano dispersion emulsion: 8-12 parts; Polysiloxane modified elastomer: 5-10 parts; Silicon carbide nanowire (SiC): 3-8 parts; Cyclotriphosphazene (PZN): 5-8 parts; Expanded graphite (EG): 3-6 parts; Boron nitride nanosheet (BNNS): 10-15 parts; CeO2@MXene hybrid material: 5-8 parts; Carboxylated CNT: 2-5 parts; Polyurethane / epoxy IPN microcapsule: 2-5 parts; Aramid nanofiber (ANF): 1-3 parts; Water: 10-30 parts. The present application greatly improves the performance of waterproof agent emulsion through functional gradient design and multi-scale interface regulation.

The invention discloses a high-flame-retardant power cable, and belongs to the field of cable equipment. Comprising the following raw materials in parts by weight: 80 parts of chlorosulfonated polyethylene rubber, 30 parts of an ethylene-vinyl acetate copolymer, 40-100 parts of MH-polyphosphazene, 30 parts of carbon black, 1.5 parts of an anti-aging agent, 2 parts of a silane coupling agent, 2 parts of stearic acid, 1.5 parts of paraffin, 5 parts of maleic anhydride polybutadiene, 3 parts of N, N '-m-phenylenedimaleimide, 1-5 parts of sulfur and 1.5 parts of an accelerant. Wherein MH-polyphosphazene forms a phosphorus-nitrogen flame-retardant layer on the surface layer of the material, so that the problem of insufficient fire resistance of a common cable sheath material is effectively solved; and the nitrogen and phosphorus groups significantly improve the compatibility and dispersity of magnesium hydroxide in a matrix, and facilitate formation of a phosphorus-nitrogen-magnesium synergistic compact carbon layer. Therefore, the power cable sheath material prepared by the invention has excellent flame retardance, and has important application value in the technical field of power cable flame retardance.

A composite resin particle comprising a dye and a resin selected from the group consisting of poly(amino acids), polyphosphazenes, polysaccharide derivatives, poly(esters), poly(ortho esters), poly(cyano-acrylates) and copolymers thereof, characterized in that the composite resin particle has an absorption maximum in a range from 600 nm to 750 nm and that the average particle size of the particles is between 0.03 μm and 3 μm. The composite resin particles are suitable for opto-medical applications such as phototherapies including photothermal therapy (PTT), photodynamic therapy (PDT), chemo-photodynamic nanotherapeutics and fluorescence medical imaging.

The application discloses a kind of halogen-free flame-retardant, high heat insulation, high strength cable wrapping composite material and preparation method thereof.The cable wrapping composite material is that halogen-free flame-retardant, high heat insulation, high strength coating is coated on glass fiber cloth by coating instrument, and is prepared by heat curing at 80 DEG C.The raw materials of the coating include: thermoplastic polyurethane 80 parts, polydopamine and ZIF-8 double-layer wrapped ammonium polyphosphate 18 parts, polyphosphazene nanoshell wrapped cuprous oxide or polyphosphazene nanoshell wrapped titanium dioxide 2 parts by weight fraction.The application uses polydopamine and ZIF-8 double-layer wrapped ammonium polyphosphate, polyphosphazene nanoshell wrapped cuprous oxide or titanium dioxide as hybrid flame retardant.The halogen-free flame-retardant, high heat insulation, high strength cable wrapping composite material prepared by the application has excellent mechanical properties, and the attached flame-retardant coating can effectively insulate heat, significantly reduce the fire risk of cable, and protect the internal structure of cable.