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194results about How to "High fluorine content" patented technology
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Automotive fuel hose
ActiveUS7011114B2Inferior in sour gasoline resistanceInferior in impact resistanceSynthetic resin layered productsMachines/enginesPolyolefinGasoline
Owner:SUMITOMO RIKO CO LTD
Process and apparatus for treating a substrate
InactiveUS6177147B1Increase freedomHigh accuracyElectric discharge heatingDecorative surface effectsHalogenIon
To produce a desirable amount of desirable radical and / or ion in treating a substrate such as etching the substrate, depositing a thin film on the substrate and the like by using plasma and the like. As a treating gas, a gas such as CFmIn and the like containing both a strongly bonded halogen element (F etc.) and weakly bonded halogen element (I etc.) is used. A substrate is treated by active species produced by exciting the treating gas by an excitation means capable of providing an energy which cannot dissociate the strong bond but can dissociate the weak bond. Preferable excitation means is capable of emitting a monochromatic irradiation, having a single value of excitation energy, such as electron beam, light etc., or otherwise capable of providing plasma, having a peak energy value of electrons and sharp electron energy distribution, such as UHF plasma etc.
Owner:NEC CORP
Method for preparing polyester film for photovoltaic cell backplane
InactiveCN101733925AGood aging resistanceHigh fluorine contentFlat articlesSemiconductor devicesChemistryBackplane
The invention relates to a method for preparing a polyester film for a photovoltaic cell backplane, which comprises:1, a process step of synthesizing polyester chips, which is to first add terephthalic acid, glycol and antimony acetate serving as a catalyst into a reaction kettle to perform esterification, then to add triethyl phosphate and antioxidant 1010 which are blended with glycol to perform an reaction and finally to discharge the products of the reaction; 2, a process step of preparing mother particles, which is to crush the polyester chips synthesized by the step 1, dry the crushed polyester chips, add polycarbodiimide, an ultraviolet absorber MV 3638, triethyl phosphate and antioxidant 1010, mix the mixture and extrude the mixture by a double-screw extruder to produce the particles; and 3, a process step of producing a film by biaxial tension, which is to place the polyester chips synthesized by the step 1, the mother particles prepared by the step 2 and SiO2 3,000+ / -100ppm PET polyester chips into the double-screw extruder for blending the mixture, melt and extrude the mixture in the double-screw extruder, casting a piece by a casting piece machine and prepare the film by biaxial tension. The method of the invention can change an active terminal carboxyl group into a stable group, so the polyester film has high aging resistance.
Owner:申达集团有限公司 +1
Method of fluorinating a halogenated organic substance
InactiveUS20010049457A1High fluorine contentPreparation by halogen replacementOrganic halogenationFluorideOrganic matter
A method of fluorinating a halogenated organic substance comprising the steps of: introducing a germanium fluoride compound to a halogenated organic substance at a temperature between 250 and 320° C. to increase the fluorine content of the halogenated organic substance, thereby forming a fluorinated organic substance and a halogenated germanium compound, and separating the fluorinated organic substance and the halogenated germanium compound.
Owner:STEPHENS MATTHEW D
Polyurethane material containing fluorin in its lateral chain and preparing method thereof
A polyurethane material containing F in side chain is prepared through alternative polymerization between the flexible chain segment consisting of polyether diol and / or polycarbonate diol and the rigid chain segment consisting of diisocyanate and chain-enlarging agent. Its advantages are high biologic stability and compatibility and high elasticity, strength and resistance to oxidizing and hydrolysis. It can be used for preparing artificial blood vessel, heart valve, etc.
Owner:SICHUAN UNIV
Process method for producing fluorine compounds and silicon compounds by cleanly utilizing fluosilicic acid
ActiveCN101913637AHigh recovery rateTake advantage ofSilicaAlkali metal silicatesChemical industrySlag
The invention discloses a process method for producing fluorine compounds and silicon compounds by cleanly utilizing fluosilicic acid. The process method comprises the following steps of: preparing fluosilicic acid as a phosphorus chemical by-product into an anhydrous aluminum fluoride product, a sodium fluoride product and a cryolite product, and combining with other industrial waste silicon slags and aluminum slags to prepare a 4A zeolite product. The process method comprehensively utilizes the fluosilicic acid and has high resource recovery rate, wherein the recovery rate of the fluorine element reaches higher than 90 percent. Waste silicon dioxide slags generated in the process can be recycled to produce white carbon black and the 4A zeolite, and a mother liquor, a cleaning solution and waste gas which are generated in the production process are all recycled, thereby the environmental pollution is reduced, and the purposes of zero emission and no pollution are truly achieved, thus the method completely meets the requirement for clean production. The invention has the advantages of advanced production process, good product quality and high value, wherein the fluorine content of the aluminum fluoride is high and between 63-65 percent; the quality index of the obtained white carbon black meets the requirement on the standard of the chemical industry; and the quality of the 4A zeolite product meets the requirements on the national standard and the standard of European and American developed countries.
Owner:四川励志环保科技有限公司
Fluorinated polyurethane thickener applied to supercritical CO2 tackification and preparation method thereof
ActiveCN105294948AGood miscibilityIncrease the degree of cross-linkingDrilling compositionBulk chemical productionPetrifactionPolyethylene glycol
The invention discloses a fluorinated polyurethane thickener applied to supercritical CO2 tackification and a preparation method thereof, belongs to the field of petrifaction, and in particular relates to a thickener for supercritical CO2 dry-method fracturing and a preparation method thereof. The invention aims to provide the thickener special for supercritical CO2 dry-method fracturing and the preparation method thereof, wherein the thickener has good tackifying performance, can be easily dissolved in CO2 fluid, and has a stable system. The thickener is prepared from the following components in parts by fraction: 10 to 15 percent of diisocyanate, 5 to 8 percent of polyethylene glycol, 5 to 8 percent of trimethylolpropane, 1 to 2 percent of catalyst, 1 to 2 percent of initiator, 3 to 5 percent of sorbitan polyoxyethylene ether, 3 to 5 percent of perfluor octyl ethylene, 3 to 5 percent of dodecafluoroheptyl acrylate, and the balance of castor oil. The thickener has good tackifying performance, can be easily dissolved in the CO2 fluid, and has the stable system.
Owner:RES INST OF SHAANXI YANCHANG PETROLEUM GRP
Cored electrode for reducing diffusible hydrogen
InactiveUS20060144836A1Reduce the amount requiredReduce hydrogen contentArc welding apparatusWelding/cutting media/materialsHydrogenSlag
Owner:LINCOLN GLOBAL INC
Fluorinated polyurethane and preparation method thereof
ActiveCN106674473AEasy to storeEasy to migrateAntifouling/underwater paintsPaints with biocidesDiolFluorine containing
The invention discloses fluorinated polyurethane and a preparation method thereof. The fluorinated polyurethane is prepared through the steps: fluoroalkyl-containing polyether glycol and diisocyanate perform addition polymerization reaction, a tin catalyst is utilized to catalyze, a chain extender is utilized to extend a chain, and an amino silane coupling agent is added to seal ends. A product contains a fluorine-containing polyether block, the fluorine content is high, fluoroalkyl on a polyether lateral group is prone to generating microphase separation and surface migration, polyurethane surface energy is low, and the fluorinated polyurethane is easy to store and cure as the silane coupling agent is utilized to seal the ends. A water contact angle of a coating prepared from the fluorinated polyurethane is higher than 110 degrees, and the coating has excellent water repellency.
Owner:UPCHEM CHINA
Fluorine water-base paint
The present invention relates to paint industry technology, and is especially one kind of fluoric water-base paint. The fluoric water-base paint consists of fluorocarbon emulsion 20-90 wt%, supplementary emulsion 1-25 wt%, pigment 5-20 wt%, stuffing 1-31 wt%, dispersant 0.1-1.4 wt%, defoaming agent 0.1-0.3 wt%, wetting agent 0.3-0.5 wt%, bactericidal anti-mildew agent 0.1-0.3 wt%, filming assistant 0.01-13.5 wt%, thickener 0.01-1.1 wt% and multifunctional assistant 0.3-0.5 wt% except water. The paint has high weather resistance, high chemical corrosion resistance, antifouling property, high performance / cost ratio and other advantages.
Owner:SHANGHAI HENGFENG FLUOROCARBON MATERIAL
Fluorinated graphite and preparation method thereof
The invention relates to the technical field of new materials, in particular to a preparation method of fluorinated graphite. The preparation method of the fluorinated graphite includes the following steps that S1, graphene and a first fluorinating agent perform fluorinating reaction under inert gas protection to obtain a fluorinated graphite coarse product, wherein the reaction temperature is 150-550 DEG C, the reaction time is 2-20 hours, the graphene is graphene powder or a graphene film, and the first fluorinating agent contains fluorine gas; S2, the fluorinated graphite coarse product and a second fluorinating agent perform fluorinating reaction under inert gas protection to obtain fluorinated graphite, wherein the reaction temperature is 150-400 DEG C, the reaction time is 2-10 hours, and the second fluorinating agent is gas-phase fluoride. By the adoption of the method, the fluorinated graphite with high fluoride content can be prepared, the fluorine content is close to the theoretical level, and the defect density is low.
Owner:湖北高地石墨烯科技有限公司
Fluorinated cyclic compound, polymerizable fluoromonomer, fluoropolymer, resist material comprising the same, and method of forming pattern with the same
InactiveUS20060135744A1High transparencyIncrease resistanceOrganic chemistryPhotosensitive materialsPolymer scienceFluoropolymer
The present invention relates to a novel fluorine-containing cyclic compound that is derived from a norbornadiene and hexafluoroacetone and has an oxacyclopentane or oxacyclobutane structure. This compound may be represented by the following formula (1) or (2). Furthermore, the present invention relates to a fluorine-containing high-molecular compound prepared by a polymerization or copolymerization using this fluorine-containing cyclic compound or its derivative. By using such fluorine-containing high-molecular compound, it is possible to provide a superior resist material and a fine pattern forming process using the same.
Owner:CENT GLASS CO LTD
Tetramine monomer and preparation method and application thereof
InactiveCN106008185AImprove thermal stabilityImprove solubilityOrganic compound preparationCarbonyl compound preparationPolymer scienceEnd-group
The invention provides a tetramine monomer for synthesis of hyperbranched polyimide, and is used for solving the problems that a conventional polyimide has relatively poor thermal stability, film formation performance and other thermal properties and mechanical properties; through introduction of carbonyl and an ether chain into the tetraamine monomer, an obtained polymer has good solubility, thermal performance and mechanical properties. In addition, due to long synthesis route and large difficulty of a new electric-activity monomer, the characteristic that the hyperbranched polymer has a large number of end groups is utilized, a ferrocene group with electrochemical activity is introduced, the tetraamine monomer is subjected to a reaction with dianhydride and (4-amino)phenyl ferrocene, and the hyperbranched polyimide having ferrocene terminated and having the electrical activity can be easily prepared; the polymer can be used as an electrical storage material to be applied in the field of information storage.
Owner:JILIN UNIV
Polyester type polyurethane material with side chain containing fluorine and preparation method thereof
The invention provides a polyurethane material with a side chain containing fluorine, which is formed by copolymerizing a flexible chain section formed by common commercial polyester dibasic alcohol and a rigid chain section formed by diisocyanate and a chain extender, and is characterized in that the chain extender is dihydric alcohol with a side chain containing a perfluor alkyl group or mixture formed by the dihydric alcohol with the side chain containing the perfluor alkyl group and other low-molecule dihydric alcohol or diamine. The invention further provides a preparation method of the polyurethane material with the side chain containing the fluorine. Due to the fact that the chain extender is connected onto a polyurethane main chain (hard section) in a side chain mode, the movement of a fluorocarbon side chain is hardly limited by the polyurethane main chain while the fluorocarbon side chain can remarkably change a phase structure of the polyurethane (separation degree of a soft section and the hard section), and the novel polyurethane material is provided with good surface performance and body performance.
Owner:SICHUAN UNIV
Polishing powder, polishing liquid for glass and preparation method thereof, glass and electronic product
InactiveCN108864948AHigh fluorine contentLow costTelephone set constructionsPolishing compositions with abrasivesMohs scale of mineral hardnessHardness
The invention discloses polishing powder, a polishing liquid for glass, and a preparation method thereof, glass and electronic products, relates to the technical field of glass polishing. The polishing powder is prepared from 50 to 60% of cerium oxide, 20 to 30% of lanthanum oxide and 10 to 20% of fluorine; D50 of the polishing powder is 1.0 to 1.6 mu m, D90 of the polishing powder is 2.4 to 2.6 mu m, the Moh's hardness is 7 to 8. The polishing liquid is prepared from 50 to 60% of the polishing powder, 0.5 to 1% of a suspension agent, 1 to 10% of a dispersing agent, 1 to 5% of a flatting agent, 1 to 5% of a grinding aid and the balance of water. By controlling the content, particle size distribution and hardness of the polishing powder, high cutting rate can be guaranteed and scratch can be reduced. In addition, through adding the suspension agent, the dispersing agent, the flatting agent and the grinding aid, the suspension, dispersion, leveling and uniformity properties of the polishing powder and the grinding efficiency are improved are improved, the polishing liquid has the advantages of excellent suspension and dispersion properties, high polishing rate and good surface quality.
Owner:LENS TECH CHANGSHA
Fluoro-polyester resin and preparation method and application thereof
InactiveCN102199280AImprove hydrophobicityHigh fluorine contentPowdery paintsPolyester coatingsDistilled waterDiol
The invention discloses a fluoro-polyester resin and a preparation method and application thereof. The preparation method for the fluoro-polyester resin comprises the following steps of: reacting alkyl diol, cyclic anhydride, a fluorine-free mono-epoxy compound and a fluoro-containing mono-epoxy compound, diluting a reaction product by using acetone, adding into distilled water with stirring, and separating out a sediment to obtain the fluoro-polyester resin. The fluoro-polyester resin, a curing agent, a filer and an aid in a certain ratio are prepared into a hydrophobic polyester powder coating. The coating film has a large contact angle with water, and has high hydrophobicity. The fluoro-polyester resin is prepared from cyclic anhydride; and because water is not generated in the reaction process and vacuum dehydration is not needed, the requirement on a polyester synthesizing device is reduced and cost is saved.
Owner:ZHEJIANG UNIV
Aqueous fluorinated polyurethane coating material and preparation method therefor
InactiveCN107418405AImprove mechanical propertiesImprove thermal performanceAntifouling/underwater paintsPaints with biocidesEpoxyCoated surface
The invention relates to an aqueous fluorinated polyurethane coating material and a preparation method therefor. The method comprises the steps of subjecting fluorinated siloxane and epoxy group or amido containing siloxane to hydrolysis, forming an R group containing silanol mixed solution, i.e., sol after the hydrolysis-mild condensation of the two siloxanes, then, adding the sol into an aqueous polyurethane emulsion, and carrying out drying, thereby forming an aqueous coating material. A coating, obtained after coating drying, has a surface water droplet contact angle of 100 degrees to 160 degrees and has a water-sprinkling preventing effect on surfaces of fabrics. The use level of the fluorinated siloxane is only 0.05v% to 0.1v%, and then, the fluorine content of the surface of the coating can reach 0.7w% to 2.0w%. The coating material is simple in production process, low in cost and environmentally friendly in producing and coating processes and is extensively applied to the fields of fabric water-repellent finishing, paper water proofing, timber water proofing and the like.
Owner:杭州青杭新材料科技有限公司
Fluoroelastomer coating with high fluorine content and low-temperature solidification
InactiveCN101659817AFluorine Content GuaranteeEmission reductionCoatingsWeather resistanceHexafluoropropylene
The invention belongs to the technical field of coating, and particularly relates to fluoroelastomer coating with high fluorine content and low-temperature solidification. The coating adopts mixture formed by one or more than one of vinylidene fluoride, trifluorochlor oethylene, tetrafluoroethylene, hexafluoropropylene, alkenyl ether fluoride and hexafluoroether as the initial raw material, the initial raw material is dissolved in a proper solvent or aqueous solution, and the fluoroelastomer coating which has good fluidity and coating performance and can be solidified in low temperature solidification under the effect of a specified solidifying agent is obtained. Compared with the common fluorocarbon coating, the coating with high fluorine content (35 to 75 percent) has more excellent high-temperature resistance, chemical medium and weather resistance, can realize crosslinking, solidification and forming of fluoroelastomer molecules under the conditions of lower temperature and shortertime, and simplify conditions and techniques and construction, thus leading the large-area outdoor (field) coating to be possible and greatly expanding the application range of the fluorine material.
Owner:胡小林 +2
Optical film, polarizing plate and image display device
InactiveUS20070243370A1Lower refractive indexReduced durabilitySynthetic resin layered productsPolarising elementsRefractive indexOptical thin film
An optical film including a support and a layer provided by applying a coating composition as an outermost layer, wherein the coating composition contains a fluorine-containing compound having a fluorine content of 40% by weight or more, and a particle having a particle size of from 5 to 120 nm, and the outermost layer has a refractive index of from 1.20 to 1.38.
Owner:FUJIFILM CORP
Fluorine elastomer containing high fluorine content and preparation process thereof
The present invention is fluoric elastomer with fluorine content higher than 70 %. The fluoric elastomer consists of the following copolymerized units: 1, 1-difluoro ethylene 30-60 wt%, perfluoro propylene 20-40 wt% and tetrafluoro ethylene 20-40 wt%. The present invention also relates to the preparation process of the fluoric elastomer with high fluorine content, and the preparation process is one emulsion polymerization process with water as medium, low molecular weight esters as chain transferring agent, persulfate as initiator, perfluoro caprylate as dispersant and borax as pH regulator.
Owner:ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
Novel polymerizable acrylate compound containing hexafluorocarbinol group and polymer made therefrom
InactiveUS20060217507A1High fluorine contentOrganic chemistryPhotosensitive materialsHalogenCarbonyl group
The present invention relates to a polymerizable acrylate compound represented by the general formula (1): (in the formula, R1 represents a hydrogen atom, halogen atom, hydrocarbon group or fluorine-containing alkyl group, R2 and R3 may be different or identical, and each of them independently is a hydrogen atom, fluorine atom, hydrocarbon group optionally branched, fluorine-containing alkyl group, aromatic group, or cyclic structure containing an aliphatic group and may contain oxygen or carbonyl bond) and a polymer compound obtained by using the same.
Owner:CENT GLASS CO LTD
Polymerization method for preparing fluorine-containing alternative polymer through photocatalyst
The invention provides a polymerization method for preparing fluorine-containing alternative polymer through a photocatalyst. The polymerization method includes following steps: (1), adding two bifunctional monomers A and B, organic photocatalyst and promoter into a mixed organic solvent system, stirring in a reaction container to enable the system to be homogeneous, and sealing the reaction container after deoxidizing for four times; (2), setting temperature of the reaction container to 25 DEG C, and allowing polymerization reaction for 1-200h through photocatalysis in a condition that rotating speed is 1500-2000rpm; (3), after the reaction is finished, adding tetrahydrofuran to dilute a polymerization system, pouring into methanol, precipitating, suction-filtering, and drying to obtain the fluorine-containing alternative polymer. The organic photocatalyst is used to replace a conventional metal photocatalyst, a free radical step-by-step polymerization novel method which is simple, economical, efficient and environment-friendly is designed, and a brand-new method is provided to obtain various fluorine-containing alternative polymers having different microstructures.
Owner:SUZHOU UNIV
Automotive fuel hose
ActiveUS20050067035A1Reduce crystallinityInferior in sour gasoline resistanceSynthetic resin layered productsMachines/enginesPolyolefinGasoline
An automotive fuel hose having a three-layer structure excellent in sour-gasoline resistance and impact resistance. The automotive fuel hose includes a tubular inner layer in which fuel is adapted to flow; a low fuel permeability layer provided on an outer peripheral surface of the inner layer; and an outer layer provided on an outer peripheral surface of the low fuel permeability layer. The inner layer and the outer layer each including at least one of a polyolefin resin having a functional group and a polyamide resin and the low fuel permeability layer including a polyphenylene sulfide resin.
Owner:SUMITOMO RIKO CO LTD
Preparation technique for high-fluorine tea extract
The invention relates to a method for preparing a high-fluorine tea extract using a tea dry product with fluorine content of between 200 and 800 milligram / kilogram as a raw material; and the method comprises that the high-fluorine tea extract in a dry powder state is prepared by the procedures of leaching, coarse filtering, cooling, membrane filtration, reverse osmosis membrane condensation, extraction, vacuum condensation, spraying, drying and the like. The process has the characteristics of high yield, low energy consumption and easy operation; and the prepared extract has high fluorine content and has positive significance to a low-fluorine region and a fluorine-lacking group.
Owner:无锡太阳绿宝科技有限公司
Cyclic fluorine compounds, polymerizable fluoromonomers, fluoropolymers, and resist materials containing the fluoropolymers and method for pattern formation
InactiveUS7232917B2High transparencyImprove adhesionOrganic chemistryDecorative surface effectsResistGlass transition point
Owner:CENT GLASS CO LTD
Environment-friendly fluorine/silicon-containing heavy anticorrosive epoxy resin paint and preparation method thereof
ActiveCN103450725AImprove amphiphobiaImprove anti-corrosion performanceAnti-corrosive paintsEpoxy resin coatingsWeather resistanceReactive diluent
The invention relates to an anticorrosive paint and a preparation method thereof, particularly an environment-friendly fluorine / silicon-containing heavy anticorrosive epoxy resin paint and a preparation method thereof. The paint is composed of 30-70g of fluorine-containing epoxy resin, 10-40g of curing agent, 0.1-5g of POSS (polyhedral oligomeric silsesquioxane), 0.5-5g of silane coupling agent, 10-30g of reactive diluent, 0.5-3g of dispersant and 0.1-3g of photostabilizer. The paint provided by the invention has the advantages of high fluorine content, favorable adhesion to the substrate, simple construction technique, excellent corrosion resistance and excellent weather resistance, and is especially suitable for an anticorrosive coating under harsh conditions. The paint uses the reactive diluent capable of participating in curing reaction as the solvent instead of the organic volatile solvent component, and thus, has an environment-friendly function, thereby having great popularization and application value.
Owner:XIAMEN UNIV
Technique for Etching Monolayer and Multilayer Materials
ActiveUS20120205785A1Increase etch rateSufficient surface roughnessRadiation/particle handlingSemiconductor/solid-state device detailsPerpendicular anisotropyInductively coupled plasma
A process is disclosed for sectioning by etching of monolayers and multilayers using an RIE technique with fluorine-based chemistry. In one embodiment, the process uses Reactive Ion Etching (RIE) alone or in combination with Inductively Coupled Plasma (ICP) using fluorine-based chemistry alone and using sufficient power to provide high ion energy to increase the etching rate and to obtain deeper anisotropic etching. In a second embodiment, a process is provided for sectioning of WSi2 / Si multilayers using RIE in combination with ICP using a combination of fluorine-based and chlorine-based chemistries and using RF power and ICP power. According to the second embodiment, a high level of vertical anisotropy is achieved by a ratio of three gases; namely, CHF3, Cl2, and O2 with RF and ICP. Additionally, in conjunction with the second embodiment, a passivation layer can be formed on the surface of the multilayer which aids in anisotropic profile generation.
Owner:UCHICAGO ARGONNE LLC +1
Preparation method and application of water-based fluoropolymer emulsion
The present invention relates to preparation process of water thinned fluoric polymer emulsion for paint. The preparation process is one emulsion copolymerization process with trifluorochloro ethylene, alkyl vinyl ether or vinyl acetate, hydroxyl butyl vinyl ether, undecylenic acid and polyoxyethylene acrylate as monomers, non-ionic emulsifier NP and anionic ammonium perfluoro octoate as composite emulsifier, and composition of ammonium persulfate or potassium persulfate and sodium bisulfite as redox initiation system. The polymerization may be completed in room temperature and is simple, and the product has excellent chemical stability, mechanical stability and mechanical performance. The emulsion has relatively high fluorine content, so that the prepared paint has excellent corrosion resistance, weather resistance and antifouling performance.
Owner:TONGJI UNIV
Fluorinated graphene lubricant additive and preparing method thereof and fluorinated graphene lubricant composite material
The invention discloses a fluorinated graphene lubricant additive and a preparing method thereof and a fluorinated graphene lubricant composite material, and relates to the technical field of lubricating materials. The preparing method of the lubricant additive comprises the step of conducting a fluorination reaction after absorbing moisture from graphene oxide. Through the fluorination process ofin-situ catalysis of graphene oxide by the moisture medium in graphene oxide, it is achieved that under the room temperature and the low fluorine gas concentration, fluorinated graphene with low oxygen content, high fluorine content and large interlayer spacing is prepared. The fluorinated graphene lubricant additive is simply mixed with lubricating oil, and does not easily get agglomerated in the lubricating oil, and the fluorinated graphene lubricant composite material with high dispersing stability is prepared. Compared with an original compound material, the friction coefficient is lowered by 52.3%, and the wearing ratio is lowered by 92.5%.
Owner:SICHUAN UNIV
Fluorine-containing carbonic ester solvent, its preparation method and electrolyte for lithium ion batteries
ActiveCN102417500AStable structureImprove flame retardant performanceOrganic chemistrySecondary cellsSide chainSolvent
The invention discloses a six-membered ring structured fluorine-containing carbonic ester solvent. The structure of six-membered ring structured fluorine-containing carbonic ester solvent is more stable. In addition, as two fluorocarbon groups can be introduced on the side chain, the fluorine content in the molecules is high, and better flame resistance and low-temperature performance can be obtained. The invention also provides a preparation method of the fluorine-containing carbonic ester solvent. According to the preparation method, a high-efficiency catalyst is used and the product yield is high. Furthermore, the invention provides an electrolyte for lithium ion batteries. The electrolyte contains the above fluorine-containing carbonic ester solvent and electrolyte salt, and also comprises a non-fluoride solvent and / or a fluorine-containing additive. The fluorine-containing carbonic ester solvent can be used to effectively improve homogeneity and flame resistance of the electrolyte and raise high-temperature stability of batteries. The solvent has lower low-temperature viscosity such that low-temperature performance of batteries is better. As the surface tension of the fluorine-containing carbonic ester solvent is low, wetability between the electrolyte and an electrode material can be improved, and furthermore, electrochemical performance of batteries can be optimized.
Owner:湖南福邦新材料有限公司
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