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59results about How to "Meet the needs of different application fields" patented technology
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High foaming-ratio and high-density polyethylene microporous foaming section bar and its preparation method
ActiveCN102229708AHigh foaming ratioMeet the needs of different application fieldsCoatingsPolymer scienceFoaming agent
The invention discloses a high foaming-ratio and high-density polyethylene microporous foaming section bar and its preparation method. The invention is characterized in that the foaming section bar is directly prepared by using a high-density polyethylane raw material in the presence of a physical gas foaming agent by the physical gas foaming method. The foaming density is 0.032-0.20g / cm<3>; the foaming ratio is 5-30 times; the average pore diameter of bubbles is 10-120 microns; the bubbles are uniformly distributed; the diameter difference of 95% bubbles is less than 15% the average pore diameter; the foaming section bar has no cortex construction and can be a material of any shape. The high foaming-ratio and high-density polyethylene microporous foaming section bar has advantages of high mechanical strength, good resilience, good hear resistance, good chemical corrosion resistance and recycling and reusing possibility of wastes, and can make up the defects of present foaming materials. The preparation method of the foaming product provided by the invention is easy to operate, has a simple process flow as well as a short production period, and is in favor of industrial production.
Owner:浙江博发新材料股份有限公司
High stable water chain alkyl silane emulsion and preparation method thereof
The invention relates to a highly stable aqueous chain alkyl silane emulsion and a preparation method. The emulsion includes continuous aqueous phase, dispersed hydrolyzable alkoxy silane oil phase and emulsifier; the weight ratio of hydrolyzable alkoxy silane, emulsifier and water is 10 to 65:2 to 15:20 to 88. The hydrolyzable alkoxy silane oil phase is composed of chain alkyl trialkoxysilane R1Si (OR2) 3, trialkoxysilane R3Si (OR2) 3 or dialkoxysilane R4R5Si (OR2) 2 and the corresponding hydrolysis polycondensation oligomer, wherein, substituents R1 and R4 are C1 to 18 chain alkyls, R2 is methyl, ethyl, propyl, etc., and R3 and R5 are acryloyl oxy propyl, ethenyl, amino propyl, Gamma-glycidyl ether oxyl, etc. The emulsifier is nonionic and ionic complex, including OP series, Span series, Tween series and a composite system composed of sodium dodecyl sulfonate, sodium dodecyl sulfate and dodecyl benzene sulfonate.
Owner:湖北德邦化工新材料有限公司 +1
Method of modifying multiwall carbon nano-tube
The present invention provides a method for modifying multiwall carbon nano tube, belonging to the field of nano technology. Said method includes the following several steps: (a), adding dried multiwall carbon nano tube raw material and strong oxidative acid into a flask, making ultrasonic treatment, heating, making reflux reaction under the condition of stirring, filtering, repeatedly washing to make the above-mentioned solution be reached to neutrality, vacuum drying so as to obtain acidified multiwall carbon nano tube; (b), adding the above-mentioned acidified multiwall carbon nano tube and acylacting agent into a flask, heating, making reflux reaction under the condition of stirring, filtering, reduced pressure distillation, vacuum drying so as to obtain the acylated multiwall carbon nano tube; and (c), adding the acylated multiwall carbon nano tube and dehydration reagent into flask, at the same time adding the solvent with aminophospholipid into said flask, making ultrasonic treatment, heating, making reflux reaction under the condition of stirring, filtering, repeatedly washing, vacuum drying so as to obtain the multiwall carbon nano tube modified by water-soluble phospholipids.
Owner:SHANGHAI JIAO TONG UNIV
Universal safe intelligent terminal starting method
ActiveCN104298913AShorten the lengthReduce modificationComputer security arrangementsTerminal equipmentComputer terminal
The invention discloses a universal safe intelligent terminal starting method. According to the method, firstly, a safe starting module s-boot is arranged at the starting skipping position of an intelligent terminal, wherein the integrity reference value of a bootstrap program and the integrity reference value of an operating system are stored; secondly, s-boot is executed after the intelligent terminal is started, the storage positions of the bootstrap program and the operating system of the intelligent terminal are acquired; thirdly, the bootstrap program is installed on the s-boot, the integrity measuring value of the bootstrap program is obtained, the bootstrap program is verified, and if the bootstrap program does not pass the verification, the intelligent terminal is forced to reset; if the bootstrap program passes the verification, the operating system continues to be installed, the integrity of the operating system is measured, the integrity measuring value of the operating system is obtained, the operating system is verified, and if the operating system passes the verification, the bootstrap program is started; if not, the intelligent terminal is forced to reset. The safe starting process of the system can be guaranteed without making other change on a terminal device.
Owner:INST OF INFORMATION ENG CAS
Method for preparing self-crosslinking polymer anion exchange membrane
ActiveCN101862608AIncrease switching capacityExcellent switching capacitySemi-permeable membranesPolymer scienceSolvent
The invention discloses a method for preparing a self-crosslinking polymer anion exchange membrane, which comprises the following steps of chloromethylation, tertiary amination, quaternization and self-crosslinking membrane forming of a polymer, wherein the tertiary amination comprises the steps of dissolving the product of the chloromethylation of the polymer into a solvent to obtain chloromethylated product solution of the polymer (namely, the tertiary ammonium prepared solution); and adding a little low grade secondary amine into the solution, and then stirring and reacting at room temperature to obtain the chloromethylated tertiary ammonium solution of the polymer (namely, the quaternary ammonium prepared solution). The self-crosslinking reaction of the polymer is performed in the process of membrane forming after the quaternization. The method is simple, convenient and highly efficient; and the obtained anion exchange membrane has high ion exchanged capacity, high chemical property, high heat stability, high mechanism property, high conductivity and excellent performance at a high temperature and under the alkali condition.
Owner:WUHAN UNIV +1
Homogeneous-phase anion-exchange membrane and preparation method thereof
ActiveCN105903357AImprove performanceGood dimensional stabilityMembranesSemi-permeable membranesIon-exchange membranesToughness
The invention discloses a homogeneous-phase anion-exchange membrane and a preparation method thereof. The preparation method is characterized by including: dissolving a macromolecule enhancer into a mixed solution of p-chloromethyl styrene and styrene, sequentially adding imidazole micro-molecules with terminal alkenyl and imidazole micro-molecules without terminal alkenyl, and evenly stirring to obtain quaternary ammoniated membrane liquid; coating the membrane liquid of a membrane coating plate, and heating for curing to obtain the anion-exchange membrane. The preparation method has the advantages that the method is simple to operate, fast and safe; the prepared membrane is stable in homogeneous-phase performance, high in ion exchange capacity, high in mechanical strength, good in toughness, capable of being developed in a serial manner and satisfying the requirements of different application fields, and the like.
Owner:UNIV OF SCI & TECH OF CHINA
Homogeneous phase cation exchange film and preparation method thereof
ActiveCN101352657AHigh strengthGood compatibilitySemi-permeable membranesBenzoyl peroxideSolvent free
The invention relates to a homogeneous cation exchange membrane and a preparation method thereof, the homogeneous cation exchange membrane is characterized in that: cinnamene or / and alkyl cinnamene is taken as a monomer, divinylbenzene is taken as a crosslinking agent, benzoyl peroxide or / and azobisisobutyronitrile is taken as an initiator and bromomethyl or chloracetyl poly 1, 4-dimethyl-2, 6-phenylene oxide are taken as a polymer reinforcing agent to prepare even solution which is coated on a reinforced fabric for polymerization to obtain a base membrane which is then sulfonated in a mixture of concentrated sulphuric acid and chlorosufonic acid to obtain the homogeneous cation exchange membrane. Due to adopting aromatic polymer to produce a functional group by further sulfonation, the cation exchange membrane obtained has high exchange capacity, excellent electrochemical property and even structure. In addition, as the monomer used as the solvent can be polymerized, the preparation method is a green solvent-free technology. The cation exchange membrane series with different structures and functions can be obtained by regulating the content of polymer and crosslinking degree and changing the categories of supporters and the sulfonation condition.
Owner:HEFEI CHEMJOY POLYMER MATERIALS CO LTD
Polyester ether polyol preparation method
The invention relates to a polyester ether polyol preparation method. The preparation method is mainly characterized in that polyester polyol and polyether glycol are subjected to ester exchange reaction in the presence of a catalyst, thereby preparing polyol having both polyester units and polyether units in a molecular chain. According to the method provided by the invention, the polyester ether polyol is prepared through an ester exchange method, so that the problem of poor compatibility of polyester polyol and polyether glycol is solved; and compared with a method for preparing polyester ether polyol through ring-opening polymerization, the method provided by the invention is simple to operate and high in efficiency and has no ring-opening catalyst residue, and the ester group and ether group contents can be regulated according to actual demands. Thus, the method provided by the invention can be widely used in the field of polyurethane synthesis.
Owner:MIRACLL CHEM
High-hardness high-conductivity cooper-carbon composite and preparation method and application thereof
ActiveCN105880284AEasy to prepareLow costAuxillary arrangementsMetal rolling arrangementsCarbon compositesHardness
The invention discloses a high-hardness high-conductivity cooper-carbon composite and a preparation method thereof. According to the method, graphite powder is evenly sandwiched between completely annealed and degreased pure copper plates of which oxidation films are removed, and then the copper plates are subjected to continuous accumulative rolling for many times. Under the action of rolling force, graphite particles are crushed and refined, layers in graphite are gradually separated, and a graphene structure having a remarkably strengthening effect is formed. With increase of rolling passes, carbon (including graphite and graphene) are not only dispersed in a surface parallel to the rolling direction along with lengthening of a sample in the rolling process, but also rapidly dispersed in the thickness direction of the sample. In the accumulative rolling process, copper base bodies generate a strain strengthening effect, so that the uniform high-hardness high-conductivity cooper-carbon composite is obtained finally. The composite has good hardness and comprehensive conductivity. The hardness of the composite can be 3.3 times that of pure copper, and the conductivity of the composite is higher than 90% IACS. The method is simple is preparation process, low in cost and beneficial to large-scale industrial application.
Owner:WUHAN UNIV
Polyureas copolymer with main chain containing siloxane composition unit and preparation method thereof
ActiveCN103834034AAvoid stickingExtended service lifePolyurea/polyurethane coatingsPolyesterEnd-group
The invention discloses a polyureas copolymer with a main chain containing siloxane composition units; the polyureas copolymer comprises the following constitution units: polysiloxanes constitutional units of aminoalkyl termination; polyether constitutional units of high-molecular amino termination; polyether alcohol or polyester alcohol constitutional units; single molecule chain extension double amine or low molecular amino termination polyether constitutional units; isocyanate constitutional units. Through the design of polysiloxanes molecular composition of aminoalkyl termination and adjustment of molecule mass; on one hand, a reaction amino group and an alkyloxy crosslinking group are introduced on a terminal group; on the other hand, a chain alkyl group or a perfluoro alkyl group are designed on a side chain; simultaneously three function hydroxy or amino groups are embedded in the composition, thereby obtaining excellent anti adhesiveness, abrasion resistance, corrosion resisting, impact resistance and anti contamination functions, effectively preventing contamination objects from pasting on special equipment, improving anti pollution function, solving adherence of adherence fluid, anti pollution and wearing corrosion problems, satisfying demands of different application fields, and prolonging service life of the special equipment.
Owner:HUBEI UNIV +1
Normal-pressure drying preparation method and application of polyimide aerogel product
ActiveCN113818098AAvoid molecular weight degradationAvoid the problem of macroscopic volume shrinkageMonocomponent synthetic polymer artificial filamentSynthetic polymer filament chemical after-treatmentSupercritical dryingPolymer science
The invention discloses a normal-pressure drying preparation method and application of a polyimide aerogel product. The method comprises the following steps of copolymerizing diamine containing carboxyl or hydroxyl and other diamines with dicarboxylic anhydride, grafting a photosensitive group to obtain photosensitive fluorine-containing polyimide, and taking the photosensitive fluorine-containing polyimide as a precursor solution; carrying out molding means such as casting, blade coating, 3D printing, spinning and the like; and performing ultraviolet irradiation, solvent replacement and normal-pressure drying to obtain the polyimide aerogel product with different macrostructures. According to the normal-pressure drying preparation method and the application of the polyimide aerogel product provided by the invention, the photosensitive group is introduced, and a cross-linked structure is initiated through light, so that the framework strength of wet gel can be effectively improved, and shrinkage caused by surface tension generated in the solvent evaporation process is reduced; and secondly, the fluorine-containing binary anhydride or diamine is selected, so that the surface tension can be effectively reduced, and the shrinkage rate of a product in the normal-pressure drying process is reduced. The method effectively solves the problems of complex process, high cost, low efficiency and incapability of large-scale production in the existing freeze drying and supercritical drying methods for preparing the polyimide aerogel product.
Owner:DONGHUA UNIV
Preparation method of single-component silane-terminated liquid fluorine sealing rubber
InactiveCN107325208AImprove high temperature resistanceGood chemical resistanceNon-macromolecular adhesive additivesOther chemical processesCross-linkSilane compounds
The invention discloses a preparation method of a single-component liquid fluorine sealing rubber based on silane-terminated liquid fluororubber. According to the preparation method, carboxyl-terminated liquid fluorubber is taken as an initial raw material, reaction with an epoxy silane compound is carried out at base catalysis so as to obtain silane-terminated liquid fluororubber; the obtained silane-terminated liquid fluororubber is taken as a basic polymer, and a diluent, a cross-linking agent, and a filling material are added so as to obtain the single-component silane-terminated liquid fluorine sealing rubber. The advantages of the preparation method are that: the production technology is simple; the resources of the basic polymer are widely available; requirements of different application fields can be satisfied; and when liquid fluorubber containing ether bonds is taken as the basic polymer, the low temperature resistance is better, the cost performance is higher, no volatile component is contained, and no environment pollution is caused.
Owner:吉林氟瑞恩新材料科技有限公司
Reproduced coffee cream and preparation method thereof
ActiveCN109090256AFlexible processingEnsure stable qualityCream preparationFractionationStabilizing Agents
The invention provides reproduced coffee cream. The reproduced coffee cream is prepared from the following components in parts by weight: 30-40 parts of anhydrous butter, 0.5-3 parts of protein, 0.1-2parts of an emulsifying agent, 0.01-1 part of a stabilizing agent and 54-68 parts of water. According to the reproduced coffee cream disclosed by the invention, the protein, the emulsifying agent, the stabilizing agent and the water, in an appropriate compounding ratio, are added to the anhydrous butter, so that the reproduced coffee cream is obtained, and the problem of unstable product qualitycaused by seasonal fluctuation of raw milk is solved. Further, anhydrous butter having three different melting points of being high, medium and low is obtained through fractionation on the anhydrous butter, after the obtained anhydrous butter is singly used or combined for cooperation, then the obtained anhydrous butter is compounded with an appropriate amount of the protein, an appropriate quantity of the emulsifying agent, an appropriate quantity of the stabilizing agent and an appropriate amount of the water, and through flexible processing, reproduced coffee cream products having differentcharacteristics are obtained, requirements for different application fields can be met, and the living quality of people is improved.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY +1
Preparation method of polymer anion exchange membrane
ActiveCN104086792AImprove reaction efficiencyAvoid the use of highly toxic substancesIon-exchange membranesHydroquinone Compound
The invention discloses a preparation method of a polymer anion exchange membrane. The method comprises the following steps: 4,4'-difluoro benzophenone, hydroquinone with one or more methyl groups or a derivative of hydroquinone with one or more methyl groups, and alkali metal carbonate with a mass ratio of 1:1:1.1-1.2 are dissolved in a mixed solvent of N-methylpyrrolidone and toluene; the mixture is subjected to a reaction under high temperature, such that a polymer containing methyl group is obtained; the polymer with methyl group, bromosuccinimide and an initiator with a mass ratio of 1:0.5-0.8:0.01-0.015 are dissolved in chloroform; heating and reflux suction filtration are carried out; a mixture obtained after suction filtration is added into a precipitating agent, and precipitation is carried out, such that a brominated polymer is obtained; the brominated polymer is subjected to a quaternization treatment and is cast into a membrane; and the membrane is heated and dried, such that the polymer anion exchange membrane is obtained. The method is simple and highly efficient. The obtained polymer anion exchange membrane has high ion exchange capacity, high chemical stability, high thermal stability, and excellent mechanical properties.
Owner:北京海得利兹新技术有限公司
Preparation method of waterborne PES (polyether sulfone) coating
InactiveCN107955522AGood application performanceSmall particle sizeFireproof paintsAnti-corrosive paintsSolventChemistry
The invention belongs to the technical field of polymer materials and particularly provides a preparation method of a waterborne PES (polyether sulfone) coating. The method comprises steps of polymersynthesis, emulsification and purification; a compound precipitation liquid containing a surfactant is designed firstly and is added gradually through a high-speed dispersion device after resin polymerization, so that milk-white mixed slurry is separated out of PES resin gradually in a liquid phase, and the PES coating with different solid content is prepared after separation and purification. Thewaterborne PES coating is prepared directly through polymerization, the technological process of production is shortened, the problem of difficulties in product purification and solvent recovery is solved effectively, meanwhile, macromolecular chains of the PES resin are not damaged, and purity and performance of the product are guaranteed. The waterborne PES coating prepared with the method is small in particle size, stable in performance and capable of being widely applied to the field of heat-resistant and corrosion-resistant coatings.
Owner:成都市金吉实业有限公司
Side chain type homogeneous anion exchange membrane and preparation method thereof
ActiveCN108479436AImprove conductivityGood chemical stabilityMembranesSemi-permeable membranesAlkaneFunctional monomer
The invention discloses a side chain type homogeneous anion exchange membrane and a preparation method thereof. A structural formula of the side chain type homogeneous anion exchange membrane is as shown in the description. The preparation method is characterized by firstly preparing an alkaline functional monomer containing a benzyl bromide group by utilizing a dibromo alkane compound and an alkaline functional reagent, and then enabling the alkaline functional monomer to react with an amino-containing polypropylene phosphine oxide compound, thus obtaining the side chain type homogeneous anion exchange membrane. The side chain type homogeneous anion exchange membrane prepared by the invention has the characteristics of controllable structure, high ion exchange capacity, high conductivity,good chemical stability and the like, and can meet the demands of different application fields.
Owner:HEFEI UNIV OF TECH
Folding and unfolding device of foldable catamaran
PendingCN113002693AImprove stabilityReduce volumeHydrodynamic/hydrostatic featuresStructural engineeringMechanical engineering
The invention discloses a folding and unfolding device of a foldable catamaran. The device comprises a front folding and unfolding device, a rear folding and unfolding device, two floating bodies, an operation platform, and a front base and a rear base which form the foldable catamaran. The operation platform and the floating bodies are connected through retracting and releasing mechanisms, unfolding and folding can be carried out, the stability of water surface navigation can be improved when the device is unfolded, the size is smaller when the device is folded, and carrying, transportation and storage are convenient. The folding and unfolding device is composed of symmetrical hinge four-bar mechanisms, the kinematics of the folding and unfolding device meets the condition that a hinge four-bar mechanisms have determined motion, the folding and unfolding system can form a truss structure after being unfolded, and the folding and unfolding device has high strength and rigidity. All the assemblies of the whole ship body can be detached, and installation, debugging, transportation and storage are convenient. The operation platform is free in design, a user can carry out refitting design on the operation platform according to own requirements, and the requirements of different application fields of the ship can be met.
Owner:DALIAN HAIHANG TECH
Homogeneous phase cation exchange film and preparation method thereof
ActiveCN101352657BHigh strengthGood compatibilitySemi-permeable membranesBenzoyl peroxideSolvent free
Owner:HEFEI CHEMJOY POLYMER MATERIALS CO LTD
Multi-target satisfactory optimization pulse width modulation policy of three-phase voltage source type inverter
InactiveCN107666253AAdjust importanceMeet the needs of different application fieldsAc-dc conversionEngineeringLinear modulation
The invention discloses a multi-objective satisfaction optimization pulse width modulation strategy for a three-phase voltage source inverter, which includes three parts: a two-level voltage source inverter, global optimization PWM, and switching loss optimization. The present invention first obtains the global optimal solution corresponding to the three optimization objectives of linear modulation range expansion, output current ripple loss and switching loss by solving the mathematical programming model of the special solution of the volt-second balance equation group within a single carrier period. Secondly, a multi-objective satisfactory PWM based on online programming of special solutions of volt-second balance equations is proposed. Finally, the importance of each control objective is flexibly adjusted by adjusting the switching loss coefficient limit to meet the needs of different application fields.
Owner:申茂军
High-performance polymer resin with controllable melt viscosity, and preparation method thereof
PendingCN108219068AMelt viscosity controllableThe softening point index is close toReaction temperatureLewis acid catalysis
The invention discloses a high-performance polymer resin with a controllable melt viscosity, and a preparation method thereof, and belongs to the technical field of petrochemical industry. The methodcan realize the production of petroleum resin with an approaching softening point index and the controllable and adjustable melt viscosity by the adjustment of a technology, and concretely comprises the following steps: oil raw materials which include C5 diolefin, monoolefin, styrene and solvent oil are dropwise added into a reaction kettle, a Lewis acid catalyst is added, a reaction is carried out at a reaction temperature of 50-90 DEG C under a reaction pressure of below 1 Mpa for 0.5-4 h, and water washing and solvent removal are carried out after the reaction ends in order to obtain the final petroleum resin product. The obtained petroleum resin has a Gardner color of No.2 to No.5 color, a softening point of 70-104 DEG C and a melt viscosity at 200 DEG C of 40-300 cps. The petroleum resin with various different viscosities can be prepared in the invention to meet the needs of different application fields.
Owner:安徽同心新材料科技有限公司
Aluminum alloy cavity board for furniture and manufacturing method thereof
ActiveCN105332981ASplicing and forming speed is fastIncrease flexibilityMaterial gluingAlloyLarge size
Disclosed is a manufacturing method of an aluminum alloy cavity board for furniture. Two or more aluminum alloy cavity veneers are bonded and spliced in a side surface parallel mode, and the side surfaces of the aluminum alloy cavity veneers are bonded and spliced in parallel. The aluminum alloy cavity board for the furniture is manufactured through the manufacturing method of the aluminum alloy cavity board for the furniture. Compared with an existing large-size profile extrusion technology and an existing welded profile, the bonded aluminum alloy cavity board is high in splicing and forming speed, high in flexibility, small in flatness tolerance and small in weight, the demands of different application fields can be met, the operation is convenient and fast, and therefore the purposes of saving raw materials and reducing product manufacturing cost are achieved.
Owner:宋丽萍
Homogeneous anion-exchange membrane and preparation method thereof
ActiveCN103304830BHigh strengthHomogeneous performance is stableSemi-permeable membranesAnion exchangersPolymer scienceBenzoyl peroxide
The invention discloses a homogeneous anion-exchange membrane and a preparation method thereof. The preparation method is characterized by comprising the following steps: performing a reaction to obtain a uniform membrane liquid by taking chloromethylated vinyl benzene, vinyl benzene or / and alkyl vinyl benzene as a monomer, divinylbenzene as a crosslinking agent, benzoyl peroxide or azodiisobutyronitrile as an initiator, and quaternized bromomethylated poly(1, 4-dimethyl-2, 6-phenylene oxide) or quaternized chloracetylated poly(1, 4-dimethyl-2, 6-phenylene oxide) as a high molecular enhancer; carrying out a reaction to obtain a uniform membrane liquid and drying the membrane to obtain the anion-exchange membrane. The anion-exchange membrane is high in exchange capacity, good in electrochemical property, uniform in structure and good in heat resistance. As a previous functionalized reaction process is adopted without post-treatment steps, the membrane liquid is uniform and easy to coat, so that the membrane-forming property is good. The anion-exchange membrane obtained is high in mechanical strength, and the ion exchange radicals are uniformly distributed. Products in different structural forms and functions can be obtained by adjusting the content of polymers, types of solvents, quaterisation temperature and time and degree of crosslinking and changing the types of supporters.
Owner:HEFEI CHEMJOY POLYMER MATERIALS CO LTD
Homogeneous phase anion-exchange membrane and preparation method thereof
ActiveCN101306331BHigh strengthHigh ion exchange capacitySemi-permeable membranesAnion exchangersPolymer scienceBenzoyl peroxide
The invention discloses a homogeneous anion exchange membrane as well as the preparation method thereof. The invention is characterized in that the homogeneous anion exchange membrane takes chloromethylated styrene, styrene or / and alkyl styrene as monomers, takes divinyl benzene as a cross-linking agent, takes benzoyl peroxide or azobisisobutyronitrile as an initiator, and takes bromomethylation poly (1,4- dimethyl2, 6- phenylene oxide) or chloroacetylized poly (1,4-dimethyl2, 6-phenylene oxide) as a polymer reinforcing agent, so as to prepare a uniform solution which is used for pasting a membrane on reinforced fabrics, and the homogeneous anion exchange membrane can be obtained by pretreating a basal membrane obtained by polymerization and then carrying out quaternary ammoniation. The invention obtains a functional group through adopting aromatic polymer, thereby the obtained anion exchange membrane has high exchange capacity, good electrochemical properties, uniform structure and good heat resistance; the slurry is homogeneous, thereby being easy for pasting; the monomers serving as the solvent can be polymerized, thereby being a green and solvent free process; the polymer content and the cross-linking degree can be adjusted, and the types of the sustainer can be changed, thereby obtaining products with different structural morphologies and functions.
Owner:HEFEI CHEMJOY POLYMER MATERIALS CO LTD
Hollow fiber anion-exchange membrane and preparation method thereof
The invention relates to a hollow fiber anion exchange membrane and a preparation method thereof, and is characterized in that bromide polyphenylether is dissolved in organic solvent to obtain spinning solution the polymer mass concentration of which is 20 to 60 percent; then a dry-jet wet spinning is adopted for molding to obtain a bromide polyphenylether hollow fiber inophragma, wherein, the methyl bromide degree is 60 to 120 percent, and the benzene ring bromide degree is 0 to 20 percent; then the inophragma is pretreated and aminated to obtain the hollow fiber anion exchange membrane, wherein, the anion exchange capacity is 1.5 to 2.5mmol / g dry membrane, and the water capacity is 50 percent to 90 percent. The preparation method has the advantages of simpleness, convenience, rapidity and economy, and obtains a hollow fiber anion exchange membrane with different exchange capacity and stable performance through the control on the bromide polyphenylether structure, the spinning conditions, etc.; the hollow fiber anion exchange membrane has the characteristics of uniform structure, high ion exchange capacity, and strong pollution resistibility, and can be series-developed to meet the needs of different application fields.
Owner:UNIV OF SCI & TECH OF CHINA +1
A copper-carbon composite material with high hardness and high conductivity, its preparation method and application
ActiveCN105880284BEasy to prepareLow costAuxillary arrangementsMetal rolling arrangementsCarbon compositesHardness
The invention discloses a high-hardness high-conductivity cooper-carbon composite and a preparation method thereof. According to the method, graphite powder is evenly sandwiched between completely annealed and degreased pure copper plates of which oxidation films are removed, and then the copper plates are subjected to continuous accumulative rolling for many times. Under the action of rolling force, graphite particles are crushed and refined, layers in graphite are gradually separated, and a graphene structure having a remarkably strengthening effect is formed. With increase of rolling passes, carbon (including graphite and graphene) are not only dispersed in a surface parallel to the rolling direction along with lengthening of a sample in the rolling process, but also rapidly dispersed in the thickness direction of the sample. In the accumulative rolling process, copper base bodies generate a strain strengthening effect, so that the uniform high-hardness high-conductivity cooper-carbon composite is obtained finally. The composite has good hardness and comprehensive conductivity. The hardness of the composite can be 3.3 times that of pure copper, and the conductivity of the composite is higher than 90% IACS. The method is simple is preparation process, low in cost and beneficial to large-scale industrial application.
Owner:WUHAN UNIV
Preparation method of hard-water-resistant, acid-base-resistant and degradable multifunctional surfactant
ActiveCN113385104AGood acid and alkali resistance and biocompatibilityLarge hydrophilic and lipophilic adjustment abilityTransportation and packagingSulfonic acids salts preparationActive agentPOLYOXYETHYLENE ETHER
According to a preparation method of a hard-water-resistant, acid-alkali-resistant and degradable multifunctional surfactant, succinic anhydride sodium sulfonate, polyether amine and alkylamine are used as raw materials to prepare the multifunctional surfactant containing an amido group, a hydrophilic nonionic polyoxyethylene ether chain, a hydrophilic sulfonate anion group and an oleophylic alkyl chain. A series of surfactants with different molecular weights and different HLB values can be obtained by adjusting the length of a polyoxyethylene chain and the length of the alkyl chain, and the surfactant has the advantages of hard water resistance, difficulty in hydrolysis and capability of meeting the requirements of different application fields.
Owner:青岛恒信达化工有限公司
High stable water chain alkyl silane emulsion and preparation method thereof
The invention relates to a highly stable aqueous chain alkyl silane emulsion and a preparation method. The emulsion includes continuous aqueous phase, dispersed hydrolyzable alkoxy silane oil phase and emulsifier; the weight ratio of hydrolyzable alkoxy silane, emulsifier and water is 10 to 65:2 to 15:20 to 88. The hydrolyzable alkoxy silane oil phase is composed of chain alkyl trialkoxysilane <OR><1>Si (<OR><2>)3, trialkoxysilane <OR><3>Si (<OR><2>)3 or dialkoxysilane <R><4><R><5>Si (<OR><2>)2 and the corresponding hydrolysis polycondensation oligomer, wherein, substituents <R><1> and <R><4>are C1 to 18 chain alkyls, <R><2> is methyl, ethyl, propyl, etc., and <R><3> and <R><5> are acryloyl oxy propyl, ethenyl, amino propyl, Gamma-glycidyl ether oxyl, etc. The emulsifier is nonionic and ionic complex, including OP series, Span series, Tween series and a composite system composed of sodium dodecyl sulfonate, sodium dodecyl sulfate and dodecyl benzene sulfonate.
Owner:湖北德邦化工新材料有限公司 +1
Microcontroller architecture for embedded CPU core and complete hardware operation system
InactiveCN107255962AImproved task switching efficiencyShorten the timeProgramme controlComputer controlController architectureMicrocontroller
The invention belongs to the microcontroller and the real time operation system technology field, particularly relating to a microcontroller architecture for an embedded CPU core and a complete hardware operation system A microprocessor comprises a register set resource; the register set resource is connected to a mapping register set bank through a register interconnection bus; the CPU core and a semi-hardware operation system are connected through a high speed interconnection bus; the mapping register set bank, the CPU core and the semi-hardware operation system are integrated in a chip to form a microprocessor of an embedded complete hardware operation system; the microprocessor of the embedded complete hardware operation system is connected to an on-chip function module controller set through an on-chip peripheral bus to constitute a microcontroller of the embedded CPU core and the complete hardware operation system. The microcontroller architecture for the embedded CPU core and the complete hardware operation system can produce a microcontroller which is high in instantaneity, high in flexibility, high in adaptability and high in reliability, improves an integration degree of an application system, satisfies requirements of different fields and thus improves reliability and stability of the system.
Owner:QINGDAO UNIV
Spray Formed High Toughness Tool Steel
Owner:HEYE SPECIAL STEEL +1
A kind of carboxyethyl chitosan/polyvinyl alcohol self-healing hydrogel and its preparation method and application
ActiveCN109517193BPromotes self-healingImprove mechanical propertiesPolymer sciencePolyvinyl alcohol
The invention relates to carboxyethyl chitosan / polyvinyl alcohol self-healing hydrogel as well as a preparation method and application thereof, aiming at mainly solving the problems that the texture of existing chitosan-based hydrogel is relatively fragile and easy to break, and the safety of a used biological crosslinking agent is not good enough and the like. The hydrogel takes carboxyethyl chitosan as a base material; after the carboxyethyl chitosan is blended with polyvinyl alcohol, an oxidized sodium alginate-boric acid compound crosslinking agent is used for carrying out crosslinking toconstruct a novel multi-crosslinking network structure; the hydrogel has the advantages of excellent self-sealing performance, swelling performance, balanced moisture content, pH (Potential of Hydrogen) responsiveness and mechanical properties; and parameters including the degradability, the balanced moisture content, gel time, the swelling performance and the like can be flexibly regulated and controlled, so that the hydrogel can meet the requirements of different application scenes and applications.
Owner:WUHAN UNIV OF TECH
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