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57 results about "Poly(phosphazene)" patented technology
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Flame retardant electrolyte applied to lithium ion power battery and lithium ion power battery prepared from same
ActiveCN103811811AAppropriate viscositySuitable dielectric constantSecondary cellsOrganic electrolytesElectrolytic agentPower battery
The invention relates to the technical field of lithium ion batteries, and in particular relates to a flame retardant electrolyte applied to a lithium ion power battery and a lithium ion power battery prepared from the same. The problem that in order to improve the safety of the lithium ion battery, the used electrolyte produces a serious negative impact on the battery of the existing lithium ion power battery electrolyte is solved. The electrolyte is composed of an organic solvent, an electrolyte, a film forming additive and a flame retardant additive. The molar concentration of the electrolyte in the organic solvent is 0.6 to 1.3mol / L. The weight percentages of the film forming additive and the flame retardant additive in the electrolyte are respectively 2 to 5% and 5 to 8%. The flame retardant additive is a cyclic trimer phosphazene compound. According to the invention, the flame retardant has the advantages of high boiling point and low viscosity; by combined with other components, the electrolyte has a good flame retardant effect; and on the basis that the battery performance of the power battery using the electrolyte is not affected, a good flame retardant performance is realized, and an expected objective is realized.
Owner:WANXIANG 123 CO LTD
Halogen-free flame retardant, and application and polycarbonate composition thereof
InactiveCN102936416AHigh flame retardant efficiencyReduce dosagePhosphoric Acid EstersPolymer science
The invention discloses a halogen-free flame retardant, and application and a polycarbonate composition thereof. The halogen-free flame retardant comprises the following components in parts by weight: 5-30 parts of polyphosphazene, 1-10 parts of phosphate and 1-5 parts of PTFE (polytetrafluoroethylene). According to the halogen-free flame retardant disclosed by the invention, the polyphosphazene flame retardant and the traditional phosphate flame retardant are matched to obtain the new halogen-free flame retardant; and the halogen-free flame retardant can be used as a polycarbonate or polycarbonate-ABS (acrylonitrile-butadiene-styrene) alloy flame retardant. The halogen-free flame retardant enhances the flame retarding efficiency of the phosphonitrile flame retardant, greatly reduces the consumption, and lowers the production cost; and meanwhile, the halogen-free flame retardant has favorable compatibility with high polymer materials, and does not lower the mechanical strength of the material, thereby having wide application prospects.
Owner:江苏飞荣达新材料科技有限公司 +1
Loadable polymeric particles for therapeutic and/or diagnostic applications and methods of preparing and using the same
Particles are provided for use in therapeutic and / or diagnostic procedures. The granules include poly[bis(trifluoroethoxy)phosphazene] and / or derivatives thereof, which may be present throughout the granule or in the outer coating of the granule. The particle may also include a core comprising a hydrogel formed from an acrylic-based polymer. Barium sulfate may also be provided as a coating on the core of the granules or absorbed into the core of the granules. The particles can be used to minimize blood flow to mammalian tissues, including occluding at least a portion of a blood vessel in a mammal, or to deliver an active agent to a localized area in a mammalian body by contacting at least one particle with the localized area. Further, the particles are useful in oral sustained release formulations containing active agents, as tracer particles for injection into the bloodstream of mammals, or for use in enhanced ultrasound imaging. The particles may include density increasing agents to achieve useful levels of flotation in suspension.
Owner:VARIAN MEDICAL SYSTEMS
Polyphosphazene covalent triazine polymer and preparation method and application thereof
The invention discloses a polyphosphazene covalent triazine polymer and a preparation method and application thereof. According to the invention, a phosphazene derivative containing a cyano group at an end group is used as a precursor, and a cyclotrimerization reaction is carried out under the catalysis of protonic acid to prepare the covalent triazine polymer containing a phosphazene structure. The polyphosphazene covalent triazine polymer prepared by using the method has the characteristics of simple preparation process, mild reaction conditions, good thermal stability and the like. When theprepared polyphosphazene covalent triazine polymer is applied to flame retardance of epoxy resin, a synergistic flame-retardant effect is obtained, and the polyphosphazene covalent triazine polymer is high in flame-retardant efficiency, does not damage the mechanical properties of the epoxy resin and has great practical application value.
Owner:EAST CHINA UNIV OF SCI & TECH
Second order nonlinear optical polyphosphonitrile linked with azoineolol chromogen pendant group and its preparation and use
InactiveCN1456587AHigh second-order nonlinear optical performanceEasy to synthesizeOptical elementsPolyphosphazeneSide chain
A two-order non-linear optical polyphosphazene with coloring side group of azoindole is prepared through reaction of polyphosphazene whose side chain is linked with indole group on p-nitrophenyl diazofluoroborate. Its advantages are high two-order non-linear optical performance and better comprehensive properties.
Owner:WUHAN UNIV
Preparation method of cyclic ether phosphazene polymer electrolyte membrane with excellent membrane forming performance
The invention discloses a preparation method of a cyclic ether phosphazene polymer electrolyte membrane with excellent membrane forming performance. The method comprises steps of introducing epoxy ether and alkoxy ether side groups for equal-proportion mixing substitution to synthesize the novel cyclic ether phosphazene polymer; and preparing a polymer electrolyte membrane by a solution casting method; according to the scheme, the preparation method comprises the following steps: introducing glycidyl alcohol into polyphosphazene by taking triethylamine as an acid-binding agent, reacting diethylene glycol monomethyl ether with NaH to prepare sodium alcoholate, introducing the sodium alcoholate into polyphosphazene as a nucleophilic reagent, and reacting to prepare the novel cyclic ether phosphazene polymer; the preparation method of the phosphazene polymer electrolyte membrane comprises the following steps: uniformly mixing lithium salt, novel cyclic ether polyphosphazene and solvent water at 60 DEG C, and preparing the membrane by adopting a solution casting method.
Owner:BEIJING UNIV OF CHEM TECH
Method for detecting quercetin through fluorescent micro-probe and application
ActiveCN113736091AEnhanced system fluorescenceStrong specificityFluorescence/phosphorescenceLuminescent compositionsAluminum IonQuercitrin
The invention discloses a method for detecting quercetin through a fluorescent micro-probe and application. According to the invention, curcumin is taken as a target and phosphonitrilic chloride trimer is taken as a linking group to form a polycyclotriphosphazene co-curcumin fluorescent microsphere; the fluorescent micro-probe is formed on the basis of complexing of the fluorescent microsphere and an aluminum ion; and by virtue of good coordination capability of the quercetin and the metal ion, the quercetin is combined with the aluminum ion in the fluorescent micro-probe to release a fluorescence signal so as to enhance the fluorescence of a system, so rapid detection of the quercetin is realized. The fluorescent micro-probe is a polyphosphazene hyperbranched micron-sized fluorescent micro-probe, fluorescence signal stability and sensing performance under complex background interference are improved by constructing a curcumin-metal ion-quercetin micron-sized reactor, the lowest detection limit of quercetin micromolecules is 2.32 * 10<-8> mol / L, rapid response within 1 min is achieved, high sensitivity is realized, anti-interference capability is strong, identification is rapid, and a detection result is accurate.
Owner:SHANGHAI UNIV OF ENG SCI
Small molecule migration-resistant, low-smoke flame-retardant and ablation-resistant thermal insulation material and preparation method thereof
The invention discloses an anti-micromolecule migration, low-smoke flame-retardant ablation-resistant thermal insulation material and a preparation method thereof, and belongs to the technical field of ablation-resistant materials, wherein the defects that small molecules of an existing traditional flexible heat insulation material are prone to migration, and environmental friendliness is not achieved are overcome. The invention provides a novel elastomer-based thermal insulation material formula and a preparation method thereof. The formula comprises the following components in parts by weight: 100 parts of novel polyphosphazene elastomer; 3-5 parts of an activating agent; 0-15 parts of inorganic fiber; 0-20 parts of organic fiber; 15-35 parts of a reinforcing agent; 0-30 parts of a heat-resistant filler; 0-40 parts of an ablation-resistant filler; and 0.2-3 parts of a vulcanizing agent. Compared with traditional ethylene-propylene-diene monomer, butyronitrile and silicone rubber thermal insulation materials, the thermal insulation material provided by the invention has more excellent flame retardance, ablation resistance, interface adhesion and micromolecule migration resistance.
Owner:北京瑞亚达科技有限公司 +1
Silicon-based negative electrode material and preparation method and application thereof
InactiveCN111900365AIncrease elasticityWon't breakNegative electrodesSecondary cells charging/dischargingDischarge efficiencyLithium-ion battery
The invention provides a silicon-based negative electrode material as well as a preparation method and application thereof. A first aspect of the invention provides a silicon-based negative electrodematerial. The silicon-based negative electrode material comprises a silicon material and a polymer coating the surface of the silicon material. The polymer coating the surface of the silicon materialcan well conduct lithium ions, so that the defect of low initial charge-discharge efficiency of the silicon material is overcome; meanwhile, the polyphosphazene polymer has high elasticity, so that the stress caused by volume change of the silicon material can be well buffered, the SEI film is prevented from being broken, and the cycle performance of the lithium ion battery is improved; besides, the polyphosphazene polymer also has a certain flame retardant property, so that the safety performance of the lithium ion battery can be effectively improved, and therefore, the silicon-based negativeelectrode material can effectively improve the initial charge-discharge efficiency, cycle performance and safety performance of the lithium ion battery.
Owner:ZHUHAI COSMX BATTERY CO LTD
Silicon dioxide microsphere modified multi-scale hybrid carbon fiber and preparation method and application thereof
ActiveCN112522956AImprove electrostatic adsorption capacityImprove the bonding strength of the interfaceCarbon fibresFiberCarbon fibers
The invention discloses a silicon dioxide microsphere modified multi-scale hybrid carbon fiber, and a preparation method thereof and application of the carbon fiber in preparation of a composite material. The preparation method comprises the following steps: (1) carrying out oxidation treatment on the surface of the carbon fiber to obtain a surface oxidized carbon fiber; (2) grafting phosphonitrilic chloride trimer to the surface of the surface oxidized carbon fiber to obtain the carbon fiber modified by grafting of the phosphonitrilic chloride trimer; (3) carrying out an in-situ polymerization reaction on the phosphonitrilic chloride trimer and polyethyleneimine on the surface of the carbon fiber modified by grafting of the phosphonitrilic chloride trimer, and thus obtaining a polyphosphazene coating modified carbon fiber with positive charges on the surface; and (4) dipping the polyphosphazene coating modified carbon fiber with the positive charges into a nano silicon dioxide microsphere colloidal solution, and attaching the nano silicon dioxide microspheres with negative charges to the surface of the polyphosphazene coating modified carbon fiber through electrostatic adsorptionto obtain the silicon dioxide microsphere modified multi-scale hybrid carbon fiber.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Flame-retardant ablation-resistant butyronitrile thermal insulation material and preparation method thereof
The invention relates to the technical field of thermal insulation materials, and particularly discloses a flame-retardant ablation-resistant butyronitrile thermal insulation material and a preparation method thereof. The butyronitrile thermal insulation material is prepared from 80 to 100 parts of nitrile rubber, 5 to 30 parts of modified phenolic fiber, 10 to 40 parts of polyphosphazene elastomer, 1 to 5 parts of zinc oxide, 1 to 3 parts of stearic acid, 3 to 15 parts of plasticizer, 10 to 30 parts of reinforcing agent, 0 to 30 parts of heat-resistant filler and 1 to 3 parts of vulcanizing agent, wherein the modified phenolic fibers are alkali etching modified phenolic fibers. The modified phenolic fiber is used as an ablation-resistant fiber skeleton, and the polyphosphazene elastomer is used as a second matrix, so that the flame retardance, the erosion resistance and the ablation resistance of the butyronitrile thermal insulation material are effectively improved, and the performance requirements of a solid rocket engine on a thermal insulation layer material under overload are met.
Owner:KAILUAN GRP +1
Combination adjuvant formulation
ActiveUS20140248313A1Safe and effectiveImproving immunogenicitySsRNA viruses negative-senseAntibacterial agentsAntigenAdjuvant
Methods and compositions for enhancing an immune response to a selected antigen are described. The methods are useful for the treatment and prevention of microbial infections, such as infections caused by bacteria, viruses, fungi and parasites. The methods and compositions include host defense peptides, polyphosphazenes and immunostimulatory sequences to enhance the immune response to a coadministered antigen.
Owner:UNIVERSITY OF SASKATCHEWAN +3
No-ink silk screen printing method and application thereof
The invention discloses a no-ink silk screen printing method and an application thereof. The method comprises the steps that firstly polyvinyl alcohol (PVA) is dissolved with deionized water, then potential phosphor cyclotriphosphazene derivatives are mixed with a PVA solution, through a spin coating mode or a dripping coating mode, base materials such as paper, glass and plastic are coated with the solution, after drying and film forming are conducted, a silk screen printing plate covers the base materials, through ultraviolet irradiation, patterns are printed on the base materials, and accordingly the printing process is completed. Compared with the traditional silk screen printing technology, according to the no-ink silk screen printing method, any harmful ink is not needed in the transfer printing process, the method has no damage on construction personnel or surrounding environment, and the transfer printing process is easy and low in cost; the transfer printed patterns are invisible under sunlight and can only appear under the irradiation of an ultraviolet lamp in 200-400 nanometers, after an ultraviolet lamp is turned off, within 1-10 seconds, the transfer printed patterns are still visible, the method has high-degree hidden performance, and anti-fake of higher level can be achieved.
Owner:CHONGQING UNIV OF TECH
Polyphosphazene-based hydrogel wound dressing with antibacterial and wet surface adhesion properties, and preparation method thereof
ActiveCN113304307AImprove self-healing abilityRapid recovery of mechanical strengthPharmaceutical delivery mechanismBandagesPhenylboronic acidPolymer science
The invention discloses a preparation method of a polyphosphazene-based hydrogel wound dressing with antibacterial and wet surface adhesion properties. The hydrogel wound dressing is prepared by forming boric acid ester bonds between hydrophilic polyphosphazene containing phenylboronic acid functional groups and polyvinyl alcohol. The hydrogel wound dressing disclosed by the invention realizes passive contact antibacterial property through rich tertiary amine and quaternary ammonium salt functional groups in a cross-linked skeleton. The polyvinyl alcohol chain segment can provide a large number of hydrogen bonds, and cooperates with a cation-pi structure in a hydrogel skeleton to provide wet surface adhesion performance. The antibacterial and wet surface adhesion purposes can be achieved, good biocompatibility and self-healing performance are achieved, and wound healing can be promoted.
Owner:ZHEJIANG UNIV
Degradable environment-friendly polymer composite and production process thereof
The invention discloses a degradable environment-friendly polymer composite, and relates to the technical field of polymer composites. The degradable environment-friendly polymer composite is preparedfrom the raw material components in parts by weight: 10-60 parts of polybutylene succinate, 20-30 parts of polyhydroxyalkanoate, 1-5 parts of collagen, 2-8 parts of aliphatic polyester, 25-65 parts of chitin, 15-25 parts of cellulose, 22-45 parts of polyamino acid, 55-95 parts of polylactic acid, 2-55 parts of polycaprolactone, 9-15 parts of polyphosphazene, 3-10 parts of chitosan, 11-55 parts ofacetylchloride, 1-5 parts of a silane coupling agent, and 8-15 parts of n-octanol, wherein the polybutylene succinate, the polyhydroxyalkanoate, the collagen, the aliphatic polyester, the chitin, thecellulose, the polyamino acid, the polylactic acid, the polycaprolactone and the polyphosphazene are taken as main agents, and the chitosan, the acetylchloride, the silane coupling agent and the n-octanol are taken as auxiliary agents. According to the degradable environment-friendly polymer composite, through combination of materials such as the chitin, the cellulose, the polycaprolactone and the polybutylene succinate, the polymer composite completely meets the medical standard in the using process, the durability of the polymer composite is far higher than that of materials in the same industry, the strength and tenacity of the composite enable the service life to exceed the designed service life, after a medical device made of the composite is separated from the human body, the medical device can be degraded in the natural environment within 6-12 months, and thus environment pollution is effectively lowered.
Owner:安徽新翔包装材料有限公司
A kind of preparation method of flame-retardant waterborne polyurethane coating
The invention discloses a method for preparing a flame-retardant waterborne polyurethane coating. Under the action of a dibutyltin dilaurate catalyst, 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxo Mix hetero-10-phosphophenanthrene-10-oxide with hexamethylene diisocyanate, react at 90~110°C for 1~4h, then add nitrogen and phosphorus compounds to the reaction system, reaction temperature 70~110°C, reaction time 30 ~60min to obtain polyurethane prepolymer; add chain extender and methyl ethyl ketone solvent to polyurethane prepolymer, react at 60~85℃ for 2? ~5h, add triethylamine for neutralization reaction for 20~40min, add water for emulsification to form a water-based polyurethane; mix manganese salt dispersion, 5-hydroxytryptophan, hexachlorocyclotrimeric phosphazene and γ-diethylene Add triaminopropylmethyl dimethoxysilane to polyurethane, and shear and stir for 30-80 minutes under the condition of pH 7 to obtain flame-retardant water-based polyurethane coating. The flame retardancy and mechanical properties of the obtained polyurethane are greatly improved.
Owner:广东顺德大地缘新材料有限公司
Flame retardant, flame-retardant modified diaphragm, battery and preparation methods of flame retardant and flame-retardant modified diaphragm
PendingCN114865228AChange surface propertiesImprove adhesionFireproof paintsFinal product manufacturePolymer scienceElectrical battery
The invention discloses a flame retardant, a flame-retardant modified diaphragm, a battery and a preparation method of the flame retardant modified diaphragm, and the flame retardant comprises flame-retardant particles and polyphosphazene which coats the outer surfaces of the flame-retardant particles and is formed by polymerizing phosphazene and hydroxyl-containing organic matters. The flame retardant can overcome the defect of poor battery cycle stability caused by poor binding power between a microcapsule structure prepared by adopting a conventional microcapsule technology and a binder, and effectively improves the performance of the prepared battery while effectively improving the safety performance.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
A kind of dendritic upy damping agent and its preparation method and application
The invention discloses a dendritic UPy damper as well as its preparation method and application. The dendritic UPy damper is obtained by reacting an isocyanate-terminated dendrimer with 6-methylisocytosine, and the isocyanate-terminated dendrimer is obtained by reacting an amino-terminated dendrimer with 1,6 It is obtained by the reaction of hexamethylene diisocyanate, and the amino-terminated dendrimer is obtained by reacting a dendrimer with a chlorine atom at the end with 1,6-hexanediamine, and the dendrimer with a chlorine atom at the end It is obtained by the reaction of hexachlorotrimeric phosphazene and ethylene glycol with 1,6-hexanediamine and hexachlorotrimeric phosphazene alternately. Experiments show that: the dendritic UPy damping agent of the present invention can be uniformly dispersed in the chlorinated butyl rubber matrix, and can significantly improve the damping performance, heat resistance, mechanical properties, and wear resistance of the obtained chlorinated butyl damping rubber composite material. performance and high temperature damping temperature range.
Owner:SHANGHAI UNIV OF ENG SCI
Polyphosphazene composite flame retardant additive for lithium battery electrolyte and preparation method thereof
InactiveCN111193068BGood effectReduce exposureFinal product manufactureFire rescueElectrolytic agentElectronic conductivity
The invention relates to the technical field of lithium batteries, and provides a polyphosphazene composite flame-retardant additive for lithium battery electrolyte and a preparation method thereof. In this method, chain-like polydichlorophosphazene is obtained by ring-opening polymerization of hexachlorocyclotriphosphazene; then tetramethoxysilane is used for substitution reaction to obtain polybis(trimethoxysilyloxy)phosphazene; Hydrolysis to obtain polybis(trihydroxysiloxy)phosphazene; finally, through the reaction of magnesium chloride and sodium hydroxide, nano-sized magnesium hydroxide is generated and precipitated on the surface of polybis(trihydroxysiloxy)phosphazene, and carried out Dehydration condensation, made polyphosphazene composite flame retardant additive. Compared with the traditional method, the flame retardant additive prepared by the invention can not only make the lithium battery have good flame retardant performance, but also improve the conductivity of the electrolyte.
Owner:徐州宝盈新能源科技有限公司
Preparation and application of an ultra-long cycle polyatomic doped hollow carbon electrode material
ActiveCN113540447BThe synthesis method is simpleLarge specific surface areaCell electrodesSecondary cellsPotassium ionsBattery cell
The invention belongs to the field of potassium ion batteries, and discloses a preparation method and application of an ultra-long cycle polyatom-doped hollow carbon electrode material. The invention adopts magnesium oxide particles, hexachlorocyclotripolyphosphazene and dihydroxydiphenylsulfone to prepare magnesium oxide-polycyclotriphosphazene-dihydroxydiphenylsulfone composite material, and after calcining and removing magnesium oxide template, nitrogen and phosphorus are obtained Sulfur polyatom co-doped hollow carbon, that is, ultra-long cycle polyatom-doped hollow carbon electrode material. The synthesis method of the ultra-long-cycle polyatom-doped hollow carbon electrode material is simple, the specific surface area is large, and it has a cross-linked structure and abundant defects and active sites. Rate capability and cycling stability.
Owner:JINAN UNIVERSITY
Polyphosphazene-based hydrogel wound dressing with antibacterial and wet surface adhesion properties and preparation method
ActiveCN113304307BImprove self-healing abilityRapid recovery of mechanical strengthPharmaceutical delivery mechanismBandagesPhenylboronic acidPolymer science
The invention discloses a method for preparing a polyphosphazene-based hydrogel wound dressing with antibacterial and wet surface adhesion properties. The hydrogel wound dressing of the invention is prepared by forming a borate ester bond between hydrophilic polyphosphazene containing phenylboronic acid functional groups and polyvinyl alcohol. The hydrogel wound dressing of the present invention realizes passive contact antibacterial through abundant tertiary amine and quaternary ammonium salt functional groups in the cross-linked skeleton. The polyvinyl alcohol segment can provide a large number of hydrogen bonds and cooperate with the "cation-π" structure in the hydrogel backbone to provide wet surface adhesion properties. The invention can achieve the purpose of antibacterial and wet surface adhesion, has good biocompatibility and self-healing performance, and can promote wound healing.
Owner:ZHEJIANG UNIV
Carbon-based adsorbent and preparation method thereof
InactiveCN109012582BHigh adsorption activityWide pH rangeOther chemical processesRadioactive contaminantsMeth-Sorbent
The invention discloses a nitrogen, phosphorus and sulfur heteroatom co-doped carbon-based adsorbent. The adsorbent adopts silica as the template, with the assistance of triethylamine, hexachlorotriphosphazene and bisphenol S polymerize into highly crosslinked polycyclotriphosphazene-4, 4'-dihydroxy diphenyl sulfone. By means of a carbonization process in an inert atmosphere, a nitrogen, phosphorus and sulfur heteroatom co-doped carbon-based material can be formed, wherein the carbon content is 85-90%, the oxygen content is 8.0-11%, the nitrogen content is 1.0-2.0%, the phosphorus content is 0.5-1.0%, and the sulfur content is 0.5-1.0%. The adsorbent has good adsorption activity on radionuclides, organic pollutants and other harmful substances in a water environment like uranyl, methyleneblue, bisphenol A, etc., also has the characteristics of wide application pH range, low cost, environmental friendliness, easy recovery and reusability, thus having good application prospects.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Alkali-resistant anion-exchange membrane loaded with substituted imidazole units and preparation method thereof
ActiveCN108666602BImprove hydroxide ion conductivityGood alkali stabilityFuel cellsArylAlkaline anion exchange membrane
Owner:BEIJING UNIV OF CHEM TECH
Halogen-free red phosphorus-free flame-retardant heat shrinkage material, heat shrinkage tube and preparation method and application
ActiveCN102952325BImprove performanceImprove flame retardant performanceInsulated cablesInsulated conductorsPolymer scienceAntioxidant
The invention discloses a halogen-free red phosphorus-free flame-retardant heat shrinkage material, a heat shrinkage tube and a preparation method and application. The heat shrinkage material comprises the following raw materials: 100 parts of polymer base materials including ethylene-vinyl acetate copolymer and ethylene-ethyl acrylate copolymer in radiation grafting with maleic anhydride, 120-160 parts of inorganic flame retardant including magnesium hydroxide, 15-30 parts of polyphosphazene flame retardant including hexaphenoxy cyclotriphosphazene, 15-30 parts of nitrogen flame retardant including melamine cyanurate, 4-8 parts of composite antioxidants including a main antioxidant, an auxiliary antioxidant and an ultraviolet light absorber, 5-15 parts of anti-radiation agents including high-phenyl silicon rubber and anti-radiation agent A, and 6-12 parts of processing aids including a crosslinking sensitizer and a lubricant, wherein the anti-radiation agent A is boron carbide and / or boron nitride. The shrinkage material provided by the invention has excellent performance, good flame retardation and stable radiation resistance, electric performance and mechanical performance.
Owner:SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
Nano attapulgite composite flame retardant and preparation method thereof
The invention provides an attapulgite nano composite flame retardant and a preparation method thereof, the flame retardant is prepared from natural mineral nano attapulgite and a phosphazene compound through a one-step polymerization method, and the flame retardant has good chemical stability, thermal stability and flame retardant property. The flame retardant has good compatibility with a polymer matrix after being added into a polymer material, can effectively improve the comprehensive performance of the material while retarding flame, and can play a role in enhancing the mechanical property of the material. The flame retardant has the advantages of simple preparation process, low cost, recyclable solvent, high efficiency, environment friendliness, migration resistance, hydrolysis resistance and the like. By combining the unique structure of the attapulgite and the characteristics of high phosphorus and nitrogen content and hydrolysis resistance of the polyphosphazene, the multifunctional high-efficiency nano composite flame retardant is prepared by a one-step method, the problems of high preparation cost, low flame retardant efficiency, poor migration resistance, poor matrix compatibility and the like of the conventional flame retardant are solved, and the flame retardant has a good market application prospect.
Owner:LANZHOU PETROCHEM COLLEGE OF VOCATIONAL TECH
Ultraviolet cross-linked polyphosphazene, preparation method, composite coating low-temperature temperature measurement optical fiber and preparation method
ActiveCN111909381ASimple ingredientsNo side effectsOptical fibre with multilayer core/claddingCoatingsUltravioletTetrahydrofuran
The invention discloses ultraviolet cross-linked polyphosphazene, a preparation method, a composite coating low-temperature temperature measurement optical fiber and a preparation method, and belongsto the technical field of optical fiber manufacturing. The preparation method of the composite coating low-temperature temperature measurement optical fiber comprises the following steps: S1, dispersing ultraviolet cross-linked polyphosphazene in a tetrahydrofuran solvent, mixing with an ultraviolet initiator and a polymerization aid, and fully stirring for defoaming to obtain a coating solution;s2, putting the coating liquid into a coating mold, enabling the bare optical fiber to penetrate through the coating mold, carrying the coating liquid, and enabling the bare optical fiber to pass through an ultraviolet curing furnace under the protection of nitrogen; performing drying through a blast drying oven to form a polyphosphazene elastic coating on the surface of the bare optical fiber; and S3, enabling the optical fiber with the polyphosphazene elastic coating to pass through a secondary coating mold containing low-melting-point molten metal, and coating the surface of the polyphosphazene elastic coating with a metal melt to finally obtain the composite coating low-temperature temperature measurement optical fiber. According to the invention, the defects of cracking and poor interface bonding force of the polymer coating in the traditional composite coating optical fiber in the metal melting coating process can be overcome.
Owner:EASTERN SUPERCONDUCTOR SCI & TECH SUZHOU CO LTD
Preparation method and application of transition metal single atom and nitrogen and phosphorus doped carbon spheres
The invention relates to the technical field of preparation of battery catalysts, in particular to a preparation method and application of transition metal monatomic and nitrogen and phosphorus doped carbon spheres. The method comprises the following steps: (1) adding hexachlorotripolyphosphazene and phloroglucinol into a solvent, adding a transition metal source and triethylamine after the hexachlorotripolyphosphazene and the phloroglucinol are fully dissolved, separating precipitates under constant-temperature and ultrasonic conditions, and then drying the precipitates to obtain a catalyst template; and (2) carrying out carbonization treatment on the catalyst template to obtain the carbon spheres formed by transition metal doped nitrogen and phosphorus. The method is simple and low in cost, the elements in the prepared carbon spheres are uniformly distributed, the transition metal is in a monatomic distribution state, the content and the type of the transition metal source are adjustable, the catalytic activity of the product is high, and the carbon spheres can replace commercial Pt / C to serve as an oxygen reduction catalyst and can be applied to the fields of batteries, electrocatalysis, photocatalysis, new energy automobiles, energy storage and the like.
Owner:UNIV OF JINAN
Cyclic oligomeric phosphazene base catalyst loaded on polystyrene microspheres and its preparation method and use
The invention discloses a cyclic oligomeric phosphazene base catalyst loaded on polystyrene microspheres, a preparation method and application thereof. The catalyst supports the cyclic oligomeric phosphazene base on the polystyrene microsphere carrier through chemical bonding, which can effectively avoid the detachment of the catalytic active center during use, and the catalyst can be separated from the polymerization reaction product by simple filtration , and repeated use can still maintain high catalytic activity, while containing no metal elements, good environmental benefits.
Owner:QINGDAO UNIV OF SCI & TECH
Preparation and application of super-long-cycle polyatom-doped hollow carbon electrode material
ActiveCN113540447AThe synthesis method is simpleLarge specific surface areaCell electrodesSecondary cellsElectrical batteryPotassium ions
The invention belongs to the field of potassium ion batteries, and discloses a preparation method and application of an ultra-long cycle polyatom doped hollow carbon electrode material. The preparation method comprises the following steps: preparing a magnesium oxide-polycyclotriphosphazene-dihydroxy diphenyl sulfone composite material from magnesium oxide particles, phosphonitrilic chloride trimer and dihydroxy diphenyl sulfone, and calcining and removing a magnesium oxide template to obtain nitrogen, phosphorus and sulfur multi-atom co-doped hollow carbon, namely the ultra-long cycle multi-atom doped hollow carbon electrode material. The ultra-long cycle multi-atom doped hollow carbon electrode material is simple in synthesis method and large in specific surface area, has a cross-linked structure and abundant defects and active sites, and can well improve the rate capability and cycle stability of a potassium ion battery as a negative electrode material of the potassium ion battery.
Owner:JINAN UNIVERSITY
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