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78 results about "Perfluoroether" patented technology
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Perfluoroethers are a class of organofluorine compound containing one or more ether functional group. In general these compounds are structural analogous to related hydrocarbon ethers, but they exhibit also the distinctive properties of fluorocarbons.
Fluorine-containing organopolysiloxane, a surface treatment composition comprising the same and an article treated with the composition
ActiveUS20070149746A1Increase resistanceHigh strengthSilicon organic compoundsLayered productsPolymer scienceHydrogen atom
An organopolysiloxane represented by the following general formula (A), (B) or (C) SinR12n+2On−1 (A) SinR12nOn (B) SinR12n+2R2kOn−k (C) wherein R1 may be the same with or different from each other and is a hydrogen atom or a monovalent organic group, R2 is an alkylene group having 2 to 6 carbon atoms, n is an integer of from 2 to 40 and k is an integer of 1 to 3, characterized in that at least two R1's are represented by the following formula (i): wherein X is a hydrolyzable group, R3 is an alkyl group having 1 to 4 carbon atoms or a phenyl group, y is an integer of from 1 to 5 and a is 2 or 3; and one SiR1 bond is represented by the following formula (ii) or one SiOSi bond is replaced with a bond represented by the following formula (iii): SiQRf1 (ii) SiQRf2QSi (iii) wherein Rf1 is a monovalent group containing a perfluoroether residue, Rf is a divalent group containing a perfluoroether residue, and Q is a divalent organic group.
Owner:SHIN ETSU CHEM IND CO LTD
Curable fluoropolyether composition
InactiveUS20060014895A1Improve heat balanceGroup 4/14 element organic compoundsSynthetic resin layered productsPerfluoropolyetherHeat resistance
A curable fluoropolyether composition comprises (A) a fluoropolyether compound, (B) a perfluoropolyether, (C) an organohydrogenpolysiloxane, (D) spherical silica powder, (E) a fluorinated trialkoxysilane, and (F) a platinum catalyst. The composition can be heavily loaded with the silica (D). By virtue of using components (A) and (B) both having a perfluoroether structure in the backbone as the base polymer, the curable fluoropolyether composition cures through heating at a low temperature for a short time into a product having good heat resistance, freeze resistance, oil resistance, solvent resistance, chemical resistance, moisture resistance, and electrical insulation.
Owner:SHIN ETSU CHEM IND CO LTD
Perfluoroether composite air condition hose and preparation method thereof
InactiveCN102042446AMeet anti-seepage requirementsChemically resistantFlexible pipesRubber materialVulcanization
Owner:GUANGDONG MIDEA ELECTRIC APPLIANCES CO LTD
Processes for producing thin films and optical members
InactiveUS20080286457A1Improve antistatic performanceImprove waterproof performancePretreated surfacesSpecial surfacesPolymer scienceSide chain
A process for producing a thin film and an optical member which are free from discoloration of a lens and exhibit a good antistatic property and a good water repellency. The thin film is formed by a vacuum deposition of a water repellent solution which contains (a) a water repellent having a perfluoroalkyl group, (b) a mixture of a silane coupling agent, a modified silicone oil introduced with an organic group into its side chain and / or both terminal ends, and a perfluoroether compound, and (c) at least one conductive substance selected from the group consisting of fullerenes, carbon nanotubes and graphite compounds.
Owner:HOYA CORP
Perfluoroether elastomer and preparation method thereof
The invention discloses a preparation method of a perfluoroether elastomer. The preparation method comprises the step of carrying out emulsion polymerization on four comonomers in the presence of an initiator and a chain transfer agent, so as to prepare a fluorine-containing elastomer, wherein the four comonomers are as follows: the first monomer is tetrafluoroethylene, the second monomer is perfluoromethyl vinyl ether, the third monomer is a vulcanization point monomer, and the fourth monomer is pentafluoroethyl vinyl ether and / or pentafluoropropyl vinyl ether; and the fluorine-containing elastomer is prepared from the following steps: adding water into a reaction container, introducing a mixture of the first monomer, the second monomer and the fourth monomer, maintaining the pressure of the container at 0.5MPa-2.0MPa, adding 2g / L-10g / L of the third monomer according to the mass volume ratio, and carrying out polymerization reaction. According to the preparation method, the monomers such as PEVE / PPVE are used in the reaction, so that the rigidity of molecular chains can be reduced, the flexibility of molecular chains can be increased, and the hardness of the perfluoroether elastomer is reduced.
Owner:ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
Preparation of ethylene-tetrafluoroethylene copolymer
The invention discloses a method for making ethylene-tetrafluoroethylene copolymer. The method adopts a microemulsion system, and the microemulsion comprises deionized water, perfluoro ether oil, perfluoro dispersant and an auxiliary agent. The obtained ethylene-tetrafluoroethylene copolymer has thermal cracking resistance at high temperature, excellent chemical corrosion resistance and outstanding mechanical property.
Owner:SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
Corrosion-resistant aluminum plastic film for lithium battery
InactiveCN109378410AGood effectImprove performanceJackets/cases materialsBatteriesComposite filmPolyvinyl chloride
The invention provides a corrosion-resistant aluminum plastic film for a lithium battery. The corrosion-resistant aluminum plastic film comprises a protective layer, an aluminum foil layer and a heatsealing layer; the protective layer is adhered to and compounded with the aluminum foil layer by a cementing layer; the aluminum foil layer is compounded with the heat sealing layer by hot pressing; the aluminum foil layer is compounded with the heat sealing layer by hot pressing; and the heat sealing layer is made of a three-layer co-extrusion composite film, the inner layer is a bonding layer, the middle layer is a structural layer, the outer layer is a barrier layer which is made of a casting polypropylene film, and a material of the structural layer is composed of fluorinated polyvinyl chloride, perfluoroether rubber and nanometer carbon black. Due to the arrangement of the structural layer containing fluorinated polyvinyl chloride, the perfluoroether rubber and nanometer carbon black,the obtained aluminum plastic film is capable of resisting to hydrofluoric acid and also has relatively good mechanical properties; and meanwhile, due to the combined action of the structural layer and the barrier layer, the effect of completely isolating an electrolyte is achieved, the whole structure of the aluminum plastic film is supported, and the mechanical properties are improved.
Owner:CHENDU NEW KELI CHEM SCI CO LTD
Low-temperature-resistant perfluoroether rubber and synthesis method thereof
The invention relates to a synthesis method of a low temperature-resistant perfluoroether rubber. The synthesis method comprises the following steps: 1) evenly mixing an emulsifier, fluoroether oil and water together and heating until 40 DEG C to form a microemulsion, and adding a comonomer A and a comonomer B to the microemulsion to obtain a mixed liquor; 2) adding deionized water and a pH regulator to a reaction kettle, adjusting the content of oxygen in the reaction kettle to be lower than 20ppm, increasing the temperature in the reaction kettle to the range of 70-120 DEG C, and adding the mixture of tetrafluoroethylene and perfluoromethyl vinyl ether to the reaction kettle; 3) adding the mixed liquor to the reaction kettle and adding the initiator potassium peroxodisulfate to start reacting, and adding a vulcanization point monomer and a chain transfer agent until the reaction ends, thereby obtaining a polymer; 4) performing electrolyte coagulation on the polymer and then washing, drying in vacuum and molding by plastifying to obtain the perfluoroether rubber. The synthesis method is simple to operate and mild in reaction conditions, and is capable of preparing the low-temperature-resistant perfluoroether rubber by adjusting the monomer structure.
Owner:ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
Process for making aromatic aldehydes
InactiveCN1323287AOrganic compound preparationOrganic chemistry methodsBoiling pointTrimellitic acid
Alkyl aromatic compounds are converted to alkyl aromatic aldehydes by a carbonylation reaction. The carbonylation catalyst can be a high boiling point carbonylation catalyst which allows for the separation of the aldehyde product by selective volatilization. Alternatively, the carbonylation catalyst can be selected from perfluoroalkyl sulfonic acids having 2 to 18 carbon atoms, perfluoroether sulfonic acids having 2 to 18 carbon atoms, BF3.(ROH)x wherein R represents CH3 or H and X is a number within the range of from 0.2 to 2, GaBr3, GaCl3, TaF5, NbF5, and NbBr5, with the proviso that when the catalyst is TaF5, NbF5, or NbBr5, then the reaction takes place in the absence of added HF. Preferably, all of the carbonylation reactions take place in the absence of added HF. The alkyl aromatic aldehydes can be oxidized to form an aromatic acid. A mixed xylene feed stock can be converted to a mixture of diemthylbenzaldehydes and then oxidized to form trimellitic acid without the need to separate the xylene or dimethylbenzaldehyde isomers.
Owner:EXXONMOBIL CHEM PAT INC
Perfluoroether moiety-containing polymer and a surface treating agent comprising the same
ActiveUS20100029889A1Excellent surface slip propertyHigh reactivityLayered productsCoatingsOxygenPerfluoroether
The present invention relates to a perfluoropolyoxyalkylene group-containing polymer represented by the following formula (1),wherein Rf is a group having a perfluoropolyoxyalkylene group; W1 is a divalent organosiloxane group having at least one group represented by the following formula (2); W2 is a monovalent group selected from an alkyl group, an alkenyl group, an alkenyloxyalkyl group, an aryl group and an organosiloxane group represented by the following formula (3), and the combinations thereof, the monovalent group having 1 to 300 carbon atoms and being optionally substituted with one or more fluorine atoms; Q is, independently of each other, a divalent linking group having 2 to 12 carbon atoms, optionally containing one or more oxygen atoms, nitrogen atoms, or fluorine atoms; and p is an integer of from 1 to 20,wherein X is a hydrolysable group; R1 is an alkyl group having 1 to 4 carbon atoms or a phenyl group; y is an integer of from 1 to 5; and a is 2 or 3,wherein, R2 and R3 each are, independently of each other, a group selected from an alkyl group and an aryl group, have 1 to 200 carbon atoms and may optionally be substituted with one or more fluorine atoms and; and n is an integer of from 0 to 50.
Owner:SHIN ETSU CHEM IND CO LTD
Poly fluorine-containing siloxane coatings
InactiveUS20160200941A1Improve propertiesImprove bindingLayered productsCoatingsPolymer scienceEther
Poly fluorine-containing siloxane coatings having improved hydrophobic and oleophobic properties and solutions for creating such coatings are provided. In some embodiments, the coating includes a polymer having a plurality of Si—O—Si linkages; and at least two fluorine-containing moieties, each attached to at least one of the Si—O—Si linkages. Each fluorine-containing moiety independently includes a linking portion attached to a silicon of one of the Si—O—Si linkages, wherein the linking portion is of a formula selected from the group consisting of: —[CH2]a— where a is an integer from 1 to 10 and —[CH2]bCONH[CH2]c— where b and c are independently an integer from 0 to 10. Each fluorine-containing moiety also independently includes a fluorinated portion attached to the linking portion, wherein the fluorinated portion is selected from a fluorinated-alkyl group having 1-10 carbon atoms and a perfluoro-ether containing organic group.
Owner:HONEYWELL INT INC
Synthetic method of perfluoroether rubber with wide temperature range and the perfluoroether rubber
The invention relates to a synthetic method of perfluoroether rubber with a wide temperature range. Main improvement points are as follows: tetrafluoroethylene and perfluoromethoxy ethyl vinyl ether are used as comonomers; the perfluoroether rubber is prepared through an emulsion polymerization method, and one or more of perfluoro-4-bromo-1-butene, perfluorobromoethyl vinyl ether, perfluoroiodoethyl vinyl ether, perfluoro-4-iodo-1-butene, trifluoroiodoethylene or trifluorobromoethylene is added as vulcanization point monomers in the polymerization reaction process; and I(CF2)nI is selected asa chain transfer agent. The perfluoromethoxy ethyl vinyl ether is selected as the monomer of the polymerization reaction, so that the temperature range of the perfluoropolyether obtained by polymerization can be effectively widened, the lowest temperature range can reach -35 DEG C, and the perfluoromethoxy ethyl vinyl ether can be used for a long time at the high temperature of 250 DEG C and has high and low temperature resistance.
Owner:ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
Acrylic ester containing perfluoropolyether chain and synthetic method thereof
InactiveCN106905198ASimple processHigh yieldOrganic compound preparationCarboxylic acid amides preparationPolymer scienceAcrylic resin
The invention discloses an acrylic ester containing a perfluoropolyether structure. The structure general formula of the acrylic ester is as shown in the Figure I, wherein Rf is a perfluoropolyether group; R' is a bivalent CO or SO2 group; R1 and R3 are the same or different C2-C6 bivalent alkyl groups; R2 and R4 are H or C1-C3 monovalent alkyl groups; n is the integer greater than or equal to 0. The Figure I is as shown in the specification. The synthetic method for the acrylic ester containing the perfluoropolyether comprises the following steps: 1) enabling N-hydroxyalkylamine compound to react with a derivative of perfluoropolyether substituted formic acid or a derivative of perfluoropolyether substituted sulfonic acid to obtain N-hydroxyalkyl perfluoropolyether amide or N-hydroxyalkyl perfluoropolyether sulfamide; and 2) under the production of nitrogen, slowly adding propylene acyl halide or 2-alkyl propylene acyl halide to the N-hydroxyalkyl perfluoropolyether amide or the N-hydroxyalkyl perfluoropolyether sulfamide dropwise, reacting for 1-5 hours, to obtain an acrylic ester compound containing the perfluoropolyether chain. The acrylic ester containing the perfluoropolyether chain synthesized by using the method has the characteristics of simple technology, and high product yield and purity, and can be applied for the synthesis of a fluorine-containing acrylic resin or other fluorine-containing materials.
Owner:JIANGSU LEE & MAN CHEM +2
Perfluoroether based polymers
Owner:EI DU PONT DE NEMOURS & CO
Silicone rubber tube with high-temperature resistance and high flame retardancy
InactiveCN105419342AGood high and low temperature resistanceImprove high temperature resistanceFiberPolymer science
The invention discloses a silicone rubber tube with high-temperature resistance and high flame retardancy. The silicone rubber tube comprises raw materials as follows: methyl vinyl phenyl silicone rubber, perfluoroether rubber, zinc oxide, stearic acid, 2,5-dimethyl-2,5-di(tert-butylperoxy) hexane, DIPDIS, ceramic fiber, nano carbon fiber, triethyl aluminum, aluminum hydroxide, zirconium oxide, hollow phenolic aldehyde microspheres, iron oxide red, modified montmorillonite, aedelforsite, hexamethyl disilazane, an anti-aging agent, ethyl carbamate, phthalate acid ester, tricresyl phosphate, vinyl silicone oil and an accelerant. The silicone rubber tube with high-temperature resistance and high flame retardancy has excellent flame retardancy, good high-temperature resistance and high strength, and products of the silicone rubber tube can meet use requirements in various environments and have long service life.
Owner:安徽都邦电器有限公司
Vibrating diaphragm for miniature sound production device and miniature sound production device
ActiveCN110784806AImprove acoustic performanceImprove structural stabilityPlane diaphragmsEngineeringSound production
The invention discloses a vibrating diaphragm for a miniature sound production device and the miniature sound production device. The vibrating diaphragm is made of fluororubber. A main chain and / or aside chain of a molecular chain of the fluororubber contain / contains fluorine molecules. A vulcanizing agent is mixed in the fluororubber, a molecular chain of the fluororubber forms a cross-linked structure, the thermal deformation temperature of the vibrating diaphragm prepared from the fluororubber is greater than 200 DEG C, and the fluororubber comprises at least one of fluororubber 23, fluororubber 26, fluororubber 246, fluororubber TP, metafluoroether rubber and perfluoroether rubber; the vibrating diaphragm provided by the invention has better structural stability, polarization resistance and low-frequency sensitivity; the miniature sound production device provided by the invention has better acoustic performance.
Owner:GOERTEK INC
Environment-friendly flame-retardant solvent cleaner and preparation method thereof
ActiveCN104862126AVolatileImprove flame retardant performanceOrganic non-surface-active detergent compositionsNon-surface-active detergent solventsPropyl bromideEthylene glycol monoethyl ether
The invention discloses an environment-friendly flame-retardant solvent cleaner. The solvent cleaner comprises a main cleaning agent, an azeotropic solvent and an auxiliary cleaning agent, wherein the main cleaning agent is any one of or a mixture of two of 1,1,2,2,3-pentafluoropropane, perfluoroether and propyl bromide; the azeotropic solvent is a mixture of any two of absolute ethyl alcohol, isopropyl alcohol and n-butyl alcohol; the auxiliary cleaning agent is any one of or a mixture of two of ethylene glycol monomethyl ether, ethylene glycol monoethyl ether and diethylene glycol monomethyl ether; the cleaner comprises, in percentage by weight, 50%-65% of the main cleaning agent, 10%-25% of the azeotropic solvent and 15%-30% of the auxiliary cleaning agent. The invention further provides a preparation method of the environment-friendly flame-retardant solvent cleaner. The solvent cleaner has high cleaning capability and good cleaning effect, is flame-retardant, non-toxic and odorless, cannot pollute the environment or the atmosphere and is a real flame-retardant and environment-friendly industrial cleaner.
Owner:上海中孚油品集团有限公司
Nitrile rubber sealing ring
InactiveCN112321915AImprove flame retardant performanceImprove performanceOther chemical processesPolymer sciencePoly ether ether ketone
The invention provides a nitrile rubber sealing ring. According to the technical scheme, the nitrile rubber sealing ring comprises a main material and an auxiliary material. The main material comprises nitrile rubber, the auxiliary material comprises silicone rubber, perfluoroether rubber, polyether-ether-ketone, chlorosulfonated polyethylene, a vulcanizing agent, a softener, an adhesive, an accelerant DPTT, a reinforcing agent, a flame retardant and color masterbatch, and the softener is composed of paraffin and asphalt. The vulcanizing agent is made of N '-phenylene bismaleimide. The nitrilerubber sealing ring has the beneficial effects that the silicon rubber, the perfluoroether rubber and the polyether-ether-ketone are added according to a proper proportion, so that the temperature resistance is effectively improved, and the nitrile rubber sealing ring can be used for a long time in a high-temperature environment; in addition, the performance of the sealing ring is comprehensivelyimproved by adding the chlorosulfonated polyethylene and the vulcanizing agent, the flame retardant effect of the sealing ring is greatly improved by adding the flame retardant, and fire accidents are also reduced.
Owner:WUHU JITUO RUBBER TECH
Quick-response reversible-photoisomerization perfluorinated-ether-chain azobenzene and preparation method therefor
InactiveCN104926683ASolve the problem of green environmental protectionNon-bioaccumulativeOrganic chemistryTenebresent compositionsStructural formulaAniline
The invention discloses quick-response reversible-photoisomerization perfluorinated-ether-chain azobenzene and a preparation method therefor. The perfluorinated-ether-chain azobenzene has a structural formula shown in the description. The preparation method comprises the steps: dissolving p-phenylene diamine and perfluoroether acyl fluoride, which serve as starting compounds, in an organic solvent so as to prepare (4-perfluoroether amide)phenylamine; diazotizing the compound by a hydrochloride / nitrite system, and then, enabling the diazotized compound to react with an alkali solution of phenol so as to prepare 4-perfluoroether amide-4'-hydroxyazobenzene; and in an anhydrous organic solvent, enabling 4-perfluoroether amide-4'-hydroxyazobenzene to react with methacryloyl chloride or acryloyl chloride so as to prepare 4-perfluoroether amide-4'-methacrylate azobenzene or 4-perfluoroether amide-4'-acrylate azobenzene. The compound disclosed by the invention has the advantages of reversible photoisomerization, quick response and high isomerization degree; a fluorinated ether chain is free of biological accumulation compared with a perfluoroalkyl hydrocarbon chain; and the compound contains an active functional group, i.e., propenyl which can participate in addition reaction or polymerization reaction, so that the field of application is broad.
Owner:DONGHUA UNIV
Degradable meal box
InactiveCN110922727AImprove high temperature resistanceGood flexibilityOther accessoriesPolymer scienceEthyl group
The invention belongs to the technical field of catering supplies, and provides a degradable meal box which comprises a box body and a box cover. The box body and the box cover are both made of polylactic acid composite materials. The box body and the box cover are made of the following materials: 97-99 parts of right-spiral polylactic acid, 1-3 parts of left-spiral polylactic acid, 5-50 parts ofvinyl acetate, 2-5 parts of chain extender and 1-5 parts of flexibilizer, and 100-200 parts of ethyl butyl perfluoroether, 200-600 parts of organic alcohol, 80-200 parts of organochlorosilane and 30-100 parts of trialkyl monochlorosilane. Compared with the existing degradable meal box, the preparation process is simpler and more environment-friendly, the high-temperature resistance of the meal boxis improved and the ingredients of the degradable meal box contain vinyl acetate and thus the flexibility of the meal box is improved.
Owner:西安和光明宸科技有限公司
Method for improving the coking resistance of a lubricating composition
Disclosed is a method of lubrication including a step of lubricating a machine with a lubricating composition, the lubricating composition including 20-100% ionic liquid or of a mixture of several ionic liquids. The ionic liquid or the mixture is selected from at least: an anion A− chosen from sulfonylimides, the substituent(s) of which is (are) independently chosen from a fluoroalkyl, fluoroether, perfluorinated alkyl or perfluoroether group; and a cation C+ including a nitrogen-containing heterocycle or a quaternary ammonium, the substituent(s) of which is (are) independently chosen from: a hydrogen atom or alkyl, alkoxy, fluorinated alkyl, perfluorinated alkyl, alkylsilane, alkyl alcohol, vinyl, alkyl allyl, ether or polyether groups having a linear or branched chain having 1-3 carbon atoms. The deposition start temperature in thin film of the ionic liquid or of the mixture of ionic liquids is at least equal to 330° C. The lubricating composition reduces deposits formed in the machine.
Owner:NYCO CO LTD
Perfluoroether-based polysiloxane as well as preparation method and application thereof
ActiveCN106883410AGood flexibilityGood viscosity-temperature characteristicsAdditivesBase-materialsEvaporationPerfluoroether
The invention relates to perfluoroether-based polysiloxane as well as a preparation method and application thereof. The perfluoroether-based polysiloxane has a structure characteristic as shown in a formula (I). The perfluoroether-based polysiloxane can have excellent performance of a low-temperature-resistance property, a viscosity-temperature property, stability, corrosion resistance and anti-wear capacity, further, is little in evaporation loss, and can be applicable to the fields, with severe environments, of aerospace, special industry and the like.
Owner:YICHANG COLLIN SILICON MATERIAL CO LTD
Straight-chain polyperfluoroether compound with hydroxyl-containing terminal group and preparation method thereof
ActiveCN111662443AGood viscosity-temperature characteristicsRegular molecular structurePolymer scienceStructural formula
The invention provides a straight-chain polyperfluoroether compound with a hydroxyl-containing terminal group and a preparation method thereof. The compound does not contain a branched chain structure, the molecular structure is neater, the compound is smoother, meanwhile, the compound has better viscosity-temperature characteristics, and the application range is wider. The straight-chain polyperfluoroether compound with the terminal group containing the hydroxyl group has a structural formula I shown in the specification; in the structural formula I, m is greater than or equal to 1, and n isgreater than or equal to 1.
Owner:CHINA PETROLEUM & CHEM CORP
Low-temperature-resistant perfluoroether rubber composition as well as preparation method and application thereof
ActiveCN112457612AImprove low temperature resistanceChemical resistance is not affectedPolymer scienceVulcanization
The invention belongs to the technical field of perfluoroether rubber compositions, and discloses a low-temperature-resistant perfluoroether rubber composition as well as a preparation method and application thereof. The composition can be vulcanized and molded into a low-temperature-resistant perfluoroether rubber product. The low-temperature perfluoroether rubber composition comprises 50-100 parts by weight of perfluoroether rubber, 10-50 parts by weight of a liquid fluororubber elastomer, 0.5-3 part by weight of a cross-linking agent, 0-4 parts by weight of an accelerant, 1-30 parts by weight of a filler and 1-3 parts by weight of a processing aid; a rubber product prepared by heating, pressurizing and vulcanizing the composition has excellent low-temperature resistance and high cost performance, and can be widely applied to low-temperature corrosion-resistant environmental conditions in petrochemical industry.
Owner:SHANGHAI REAL SEALING TECH CO LTD
Modified perfluoroether fluororubber as well as preparation method and application thereof
The invention provides modified perfluoroether fluororubber as well as a preparation method and application thereof. The modified perfluoroether fluororubber is prepared from the following raw materials: perfluoroether fluororubber and a polytetrafluoroethylene material, wherein the mass ratio of the perfluoroether fluororubber to the polytetrafluoroethylene is (70-95): (5-30). The modified perfluoroether fluororubber provided by the invention can resist high temperature of 300 DEG C, and can still meet the use requirements at the temperature of 300 DEG C; meanwhile, the hardness and the pressure change are relatively low, and the medium resistance and the processability are good.
Owner:ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
High-temperature-resistant ultrapure perfluoroether rubber and preparation method thereof
PendingCN114395240AImprove high temperature resistanceImprove mechanical propertiesPolymer sciencePerfluoroether
The invention belongs to the technical field of high polymer material preparation, and particularly relates to high-temperature-resistant ultrapure perfluoroether rubber and a preparation method thereof. The high-temperature-resistant ultrapure perfluoroether rubber is prepared from the following components in parts by mass: 80 to 120 parts of peroxide perfluoroether rubber; less than or equal to 10 parts by mass of a dispersant; 5-25 parts by mass of fumed silica; less than or equal to 10 parts by mass of an accelerant; and less than or equal to 10 parts by mass of a vulcanizing agent. The perfluoroether peroxide rubber used in the invention can resist the temperature of 300 DEG C, and has excellent medium resistance; the fumed silica is adopted to improve the high temperature resistance and mechanical properties of the material, and the dispersant is adopted to ensure the processability of the material; the invention relates to ultra-pure perfluoroether rubber with extremely low metal ion precipitation.
Owner:WENZHOU UNIVERSITY
Methods for manufacturing electrodes including fluoropolymer-based solid electrolyte interface layers
ActiveUS20200321603A1Promote sportsIncrease energy densityElectrode thermal treatmentFinal product manufactureVinyl etherAlkane
Methods for manufacturing electrodes include applying a fluoropolymer film to a lithium-based host material, defluorinating the fluoropolymer film by heating to produce a lithium electrode having a solid electrolyte interface (SEI) layer including defluorinated fluoropolymers and at least about 5 wt. % LiF. The fluoropolymers can include one or more of fluorinated ethylenepropylene, perfluoroalkoxy alkanes, vinylidenefluoride, and copolymers of perfluoromethylvinylether and tetrafluoroethylene. The fluoropolymers can include one or more fluorinated monomers, including hexafluoropropylene, tetrafluoroethylene, ethylene-tetrafluoroethylene, perfluoroethers, and vinylidene fluoride. The —CF3 functional groups of the defluorinated fluoropolymers can be about 3 wt. % to about 10 wt. % of the SEI layer. The SEI layer can include about 30 wt. % to about 50 wt. % LiF. The method can include assembling a battery cell by disposing a battery separator between a cathode and the electrode, and disposing the battery separator, the cathode, and the electrode in an electrolyte.
Owner:GM GLOBAL TECH OPERATIONS LLC
Bis(perfluoroether carboxylic acid alkyl)amino ester and method for producing the same
A bis(perfluoroether carboxylic acid alkyl)amino ester represented by the general formula: {CnF2n+1O[CF(CF3)CF2O]aCF(CF3)COO(CH2)b}2NR, wherein R is a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an aryl group, or an aralkyl group; preferably an alkyl group having 1 to 6 carbon atoms or an aryl group; n is an integer of 1 to 3; a is an integer of 0 to 20, preferably an integer of 1 to 6; and b is an integer of 1 to 12, preferably an integer of 1 to 4. The bis(perfluoroether carboxylic acid alkyl)amino ester having an amino group at the end of the ester group is produced by reacting a perfluoroether carboxylic acid fluoride compound of the formula: CnF2n+1O[CF(CF3)CF2O]aCF(CF3)COF and a bis(hydroxyalkyl)amine compound of the formula: HO(CH2)bNR(CH2)bOH at a molar ratio of 2:1 in the presence of an alkali metal fluoride.
Owner:UNIMATEC CO LTD
A kind of modified rubber material for automobile rubber hose and preparation method thereof
Owner:SUZHOU GOODTIME TECH DEV
A kind of low temperature resistant perfluoroether rubber and its synthesis method
Owner:ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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