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93results about How to "Good interface interaction" patented technology

Glass fiber infiltrating agent composition as well as preparation method and application thereof

ActiveCN103570255AAvoid defectsPlay the role of dispersing carbon nanomaterialsGlass fiberFiber
The invention provides a glass fiber infiltrating agent composition. The glass fiber infiltrating agent composition comprises a carbon nano material, a dispersant, a polymer emulsion, a coupling agent and a solvent in a mass ratio of (0.05-3):(0.025-4):(0.15-5):(0.05-1.25):(8-49). The infiltrating agent composition has good stability, the deposition of the carbon nano material on fiber surfaces is realized by coating the infiltrating agent composition on glass fiber surfaces, the performance of the glass fibers and the carbon nano material can not be damaged, and the mechanical property and thermal conductivity of the glass fibers and a composite material thereof can be effectively improved at the same time.
Owner:CHONGQING POLYCOMP INT

Preparation method for boron-doped graphene-modified gel polymer electrolyte

The invention discloses a preparation method for a boron-doped graphene-modified gel polymer electrolyte which can be applied in the fields of supercapacitors, hybrid supercapacitors, lithium ion batteries, fuel cells, etc. In the case that polyvinyl alcohol is used as a polymer matrix, the preparation method is characterized by comprising the following steps: dispersing graphene oxide in an aqueous polyvinyl alcohol solution; carrying out preformation by using a crosslinking method, e.g., preparing a polyvinyl alcohol hydrogel by using a freezing and unfreezing method; and successively soaking the hydrogel in a boric acid solution and an electrolyte solution so as to obtain the gel polymer electrolyte. The gel polymer electrolyte provided by the invention has high ion conductivity, high mechanical properties and strength and good electrode / electrolyte interface interaction and can be used for replacing a liquid electrolyte solution.
Owner:SUN YAT SEN UNIV

Bridge dynamic health real-time monitoring device

The invention discloses a bridge dynamic health real-time monitoring device. The monitoring device includes a monitoring module, data processing module, a security state evaluation module, an early warning and alarm module and a simulation display module, wherein the monitoring module includes a wireless sensor network, a strain sensor assembly and a displacement sensor, the data processing module includes a collection center station, a signal conditioner and a signal transmission device, the security state evaluation module includes a microprocessor, the early warning and alarm module includes an analysis processor and an alarm, and the simulation display module includes a 3D GIS simulation platform. According to the bridge dynamic health real-time monitoring device of the invention, the sensors are applied to the bridge health monitoring filed, and therefore, real-time monitoring on the health of a bridge can be realized, and the remaining life of the structure of the bridge can be monitored according to monitoring data. The bridge dynamic health real-time monitoring device is unprecedentedly advantageous in full coverage and around-the-clock monitoring.
Owner:宁波市交通建设工程试验检测中心有限公司

Method for stably dispersing graphene or/and carbon nanotubes in organic solvent

ActiveCN102911531AGood dispersionPlay the role of non-chemical bond modificationPigment treatment with non-polymer organic compoundsEpoxyOrganic solvent
The invention discloses a method for stably dispersing graphene or / and carbon nanotubes in organic solvent. The method includes steps of dispersing graphene or / and carbon nanotubes and bio-based gallic acid epoxy resin into the organic solvent under action of ultrasonic to obtain uniform and stable graphene or / and carbon nanotube dispersing liquid. The method is simple, requires simple equipment, and is low in production cost. The graphene or / and carbon nanotube dispersing liquid prepared by the method is high in stability and good in dispersibility, and accordingly provides necessary technical preparation for producing high-performance graphene or / and carbon nanotube composite materials. During parathion of the graphene or / and carbon nanotube composite material, the bio-based gallic acid epoxy resin can not only serve as a dispersing agent but serve as an interference compatilizer for improving interference interaction of the graphene or / and carbon nanotubes and the epoxy resin matrix.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Interlayer toughened composite material and preparation method and application thereof

The invention discloses an interlayer toughened composite material and a preparation method and an application thereof. The preparation method comprises the following steps that a reinforcing body isprovided, the reinforcing body comprises a plurality of first fiber aggregates which are stacked in the thickness direction of the reinforcing body, wherein the first fiber aggregates comprise a plurality of first fibers which are arranged in a specified direction in an orientation manner; at least one braided body is woven with the plurality of first fiber aggregates in the thickness direction ofthe reinforcing body to form the braided structure, wherein each braided body continuously penetrates between every two adjacent first fibers in two or more first fiber aggregates; the weaving structure is soaked in a fluid containing a curable resin material, then curing treatment is carried out, and the interlayer toughened composite material is formed. According to the composite material and the method and the application, the nano-carbon material strips and the like are adopted as the weaving body to weave the reinforcing body in the thickness direction, gaps are avoided between the reinforcing bodies due to the fact that the strips are added, so that a large stress concentration point does not exist in the composite material, and the interlayer toughening performance of the compositematerial is improved.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI

Modified wollastonite, and preparation method and application thereof

The invention provides modified wollastonite, and a preparation method and application thereof, belonging to the field of mineral material processing and application. The preparation method of the modified wollastonite provided by the invention comprises the following steps: mixing wollastonite with a titanate coupling agent, stearic acid and fatty acid polyoxyethylene ester, and carrying out a modification reaction to obtain inorganic modified wollastonite powder. According to the invention, a composite modifier composed of the titanate coupling agent, the stearic acid and the fatty acid polyoxyethylene ester is adopted for modification of the wollastonite, so the interface interaction between the wollastonite and a filling material can be improved, and the obtained modified product has improved binding capacity with PP and other materials and is improved in mechanical properties. Results of embodiments show that a PP composite material obtained by filling the PP with the modified wollastonite has a simply supported beam strength of more than 12.5 J, notch impact strength of no less than 7kJ / m<2>, tensile strength of more than 31 MPa, bending strength of more than 38 MPa, bendingmodulus of more than 1820 MPa and an oil absorption value of less than or equal to 23 mL / 100 g.
Owner:NANCHANG UNIV +1

High dielectric composite material for filling organic metal modified carbon tube and preparation method thereof

The invention relates to a high dielectric composite material for filling an organic metal modified carbon tube, belonging to the technical field of electroactive nano composite material preparation. The composite material comprises MWNT-TFP (Multi-Walled Carbon Nanotube-Tetrafluoropropanol) with the outer diameter of 10-30 nm and the length of 1-5 mum and PVDF (Polyvinylidene Fluoride) with the particle size of 0.1-0.2 mum, wherein the volume ratio of MWNT-TFP is 6-16%, and the ratio of PVDF is 84-94%. A preparation method comprises the following steps of: respectively dissolving MWNT-TFP and PVDF in DMF (Dimethyl Formamide), mixing the two solutions together, ultrasonically dispersing, drying, and hot-forming to obtain the composite material. The prepared composite material has the advantages of high dielectric constant, low composite temperature, simple preparation process, low cost and the like.
Owner:BEIJING UNIV OF CHEM TECH

Road, bridge and tunnel monitoring and prewarning device

The invention discloses a road, bridge and tunnel monitoring and prewarning device. The road, bridge and tunnel monitoring and prewarning device comprises a monitoring module, a data processing module, a safety state evaluation module, a prewarning alarm module and a simulation display module, wherein the monitoring module comprises a wireless sensor network, a strain sensor assembly and a displacement sensor; the data processing module comprises a collecting center station, a signal conditioner and a signal transmitting device; the safety state evaluation module comprises a microprocessor; the prewarning module comprises an analysis processor and an alarm; the simulation display module comprises a three-dimensional GIS (geographic information system) simulation platform. The road, bridge and tunnel monitoring and prewarning device has the advantages that the sensors are applied to the road, bridge and tunnel prewarning field, so that the real-time monitoring on the health of the road, bridge and tunnel structure is realized; the residual life of the road, bridge and tunnel structure can be predicted according to the monitoring data; an unprecedented height is reached in the full-coverage and all-weather monitoring.
Owner:YANCHENG SANSHAN ROAD FACILITIES

Polyolefin/vegetable fiber composite material and preparation method thereof

The invention discloses a polyolefin / vegetable fiber composite material and a preparation method thereof. The composite material consists of polyolefin, vegetable fibers, functional modified parent stock and a processing assistant, wherein the weight percentage of the polyolefin is 20 to 60 percent; the weight percentage of the vegetable fibers is 40 to 80 percent; the weight of functional modified parent stock is 5 to 15 percent based on the total weight of the polyolefin and the vegetable fibers; and the weight of the processing assistant is 2 to 5 percent based on the total weight of the polyolefin and vegetable fibers. The preparation method of the composite material comprises: strictly drying the vegetable fibers, fully mixing the dried vegetable fibers and the processing assistant in equipment such as a high-speed mixer; blending the mixture with polyolefin particle materials and the functional modified parent stock, performing extruding granulation, and obtaining the composite material. Compared with the conventional polyolefin / vegetable fiber composite material, the composite material is obviously improved in impact toughness while retaining strength and modulus, and the application range of the polyolefin / vegetable fiber composite material is further enlarged.
Owner:成都芝田高分子材料有限公司

Rubber antioxidant-reduced and modified graphene oxide, as well as preparation method and application thereof

The invention discloses rubber antioxidant-reduced and modified graphene oxide, as well as a preparation method and application thereof. According to the method, graphene oxide can be reduced and modified only at the same time through one-step reaction, and the method specifically comprises the following steps: mixing the graphene oxide with water, and carrying out ultrasonic stripping, thereby obtaining graphene oxide aqueous dispersion; mixing a rubber adjuvant solution with the graphene oxide aqueous dispersion, and carrying out heating stirring, thereby obtaining the rubber antioxidant-modified graphene oxide. According to the preparation method, a reducing agent is nontoxic and environmentally-friendly; the method is simple and feasible; the reaction conditions are mild; the obtained graphene oxide is low in oxygen-containing functional group content and high in conjugation degree; part of an antioxidant is grafted to the surface of graphene, so that uniform dispersion of the graphene in rubber can be promoted, and the interface bonding effect on a rubber matrix can be enhanced; furthermore, migration and volatilization of the antioxidant can be avoided, and the interaction efficiency of the antioxidant is improved; therefore, the performance of a rubber / graphene composite material is improved. A new opportunity and a new way for green and macroscopic quantity preparation of the graphene and obtaining of a high-performance rubber / graphene nano composite material are supplied.
Owner:SOUTH CHINA UNIV OF TECH

Carbon dot-based high-water-content tough hydrogel and preparation method thereof

The invention discloses carbon-dot-based high-moisture-content tough hydrogel and a preparation method thereof, and belongs to the technical field of hydrogel. Specific carbon dots (hydroquinone carbon dots) are introduced, the hydroquinone carbon dots are used as nano-filler and are connected to a double-crosslinking network of sodium alginate / polyvinyl alcohol hydrogel through hydrogen bonds, effective crosslinking polymerization is promoted, and the hydrogel is prepared. The hydroquinone carbon dots are introduced, so that the conductivity can be improved, the mechanical property of the high-water-content hydrogel can be enhanced, the preparation process is simple, and the performance is excellent.
Owner:SOUTHWEST FORESTRY UNIVERSITY

Silane-modified transition-metal-supported polystyrene building material and preparation method thereof

InactiveCN106832631AEnhanced Interfacial InteractionImproved thermal stability and fire safety performanceWaxBromine
The invention discloses a silane-modified transition-metal-supported polystyrene building material. The polystyrene building material is prepared from the following raw materials in parts by weight: 6 to 8 parts of zirconium oxychloride, 7 to 9 parts of nickel chloride, 10 to 14 parts of graphene oxide, 20 to 30 parts of styrene, 0.1 to 0.2 part of dibenzoyl peroxide, 100 to 110 parts of polystyrene, 3 to 4 parts of polyamide wax micropowder, 0.4 to 1 part of 2-bromine-4-methylphenol, 2 to 3 parts of polyacrylamide, 0.5 to 1 part of dithio-salicylic acid, 0.3 to 1 part of mercaptan butyltin, 2 to 3 parts of calcium petroleum sulfonate, 0.6 to 1 part of silane coupling agent kh560, 6 to 8 parts of bentonite, 2 to 3 parts of terpilenol and 3 to 4 parts of talcum powder. By adding the saline coupling agent kh560, the dispersity of filler among copolymers can be improved effectively, and the stability strength of a finished product is improved.
Owner:江海涛

Heat insulating transition metal supported polystyrene building material and preparation method thereof

InactiveCN106751087AEnhanced Interfacial InteractionImproved thermal stability and fire safety performanceBenzimidazoleDibenzoyl Peroxide
The invention discloses a heat insulating transition metal supported polystyrene building material. The heat insulating transition metal supported polystyrene building material is prepared from the following raw materials in parts by weight: 6-8 parts of zirconium oxychloride, 7-9 parts of nickel chloride, 10-14 parts of graphene oxide, 20-30 parts of styrene, 0.1-0.2 part of dibenzoyl peroxide, 100-110 parts of polystyrene, 6-9 parts of scolecite, 0.4-1 part of alkanolamide, 2-3 parts of barium stearate, 1.7-2 parts of diacetone alcohol, 0.8-1 part of dibutyl phthalate, 0.3-1 part of 2-mercapto benzimidazole, 1-2 parts of beewax and 0.8-1 part of zinc diricinoleate. The heat insulating transition metal supported polystyrene building material disclosed by the invention has the advantages that scolecite is added, and after treatment, the porosity of the building material can be effectively improved, and the heat insulating property of the material finished product is improved.
Owner:江海涛

Fiber transition metal-loaded polystyrene building material and preparation method thereof

The invention discloses a fiber transition metal-loaded polystyrene building material. The polystyrene building material is prepared from the following raw materials in parts by weight: 6-8 parts of zirconium oxychloride, 7-9 parts of nickel chloride, 10-14 parts of graphene oxide, 20-30 parts of styrene, 0.1-0.2 part of benzoyl peroxide, 100-110 parts of polystyrene, 2-3 parts of hydroxyethyl cellulose, 0.3-1 part of benzotriazole, 0.6-1 part of triethanolamine, 0.3-1 part of fatty acid polyethylene glycol ester, 1-2 parts of cellulose phosphate, 0.4-1 part of polyvinyl butyral, 5-7 parts of montmorillonite, and 2-3 parts of calcium lactate. The added hydroxyethyl cellulose can effectively improve the dispersibility of the filler in the polymer and improve the stability of the finished product, and the added cellulose phosphate not only can effectively improve the anti-corrosion and bacteriostatic properties of the finished product material, but also can improve the toughness of the finished product material.
Owner:江海涛

Intelligent hydropower station capable of predicting its own service life in real time

ActiveCN105841663ARealize fully automated monitoringFacilitate early detectionMeasurement devicesHydropowerSignal Conditioner
The invention discloses an intelligent hydropower station capable of predicting its own service life in real time. The intelligent hydropower station includes a hydropower station body and an intelligent monitoring system arranged on the hydropower station body, wherein the system includes a monitoring module, a data processing module, a security state evaluation module, an early warning and alarm module and a simulation display module, wherein the monitoring module includes a wireless sensor network, a strain sensor assembly and a displacement sensor, the data processing module includes a collection center station, a signal conditioner and a signal transmission device, the security state evaluation module includes a microprocessor, the early warning and alarm module includes an analysis processor and an alarm, and the simulation display module includes a 3D GIS simulation platform. With the intelligent hydropower station of the invention adopted, real-time monitoring on the health of the hydropower station body can be realized, and the remaining life of the hydropower station can be monitored according to monitoring data. The intelligent hydropower station is accurate and intelligent.
Owner:张家港和智珅知识产权有限公司

Travel time measurement method based on ultrasonic two-dimensional temperature measurement device

Aiming at the requirements for precise measurement of ultrasonic wave travel time, the invention proposes a travel time measurement method based on an ultrasonic two-dimensional temperature measurement device. The method employs four ultrasonic sensors to construct a two-dimensional temperature measurement environment, designs a virtual instrument temperature testing system based on a LabVIEW software platform, and solves an envelope of a collected signal waveform, so as to extract an overall characteristic tendency of the collected signal waveform. The method obtains more accurate travel time through employing a cross-correlation algorithm, calculates a temperature mean value of a travel path according to an ultrasonic wave temperature measurement theory, compares the temperature mean value with an actual measurement value of a temperature instrument, and converts a temperature error into a travel time error. Through theoretical analysis and experiment verification, the travel time precision of the method reaches an ns level.
Owner:CHONGQING UNIV

Preparation method for inorganic powder enhanced carbon cloth/resin composite material

ActiveCN105238072AImprove wear resistanceUniform thermal performanceOther chemical processesFiltrationHardness
The invention relates to a preparation method for an inorganic powder enhanced carbon cloth / resin composite material. The preparation method comprises the steps of dissolving uniformly mixed inorganic powder with resin in anhydrous ethanol; uniformly dispersing the mixture of the inorganic powder and the resin in carbon cloth by methods of repeated suction filtration, drying and the like; and then carrying out hot press molding on the carbon cloth on a vulcanizing machine to obtain the inorganic powder enhanced carbon cloth / resin composite material with excellent mechanical and tribological properties. According to the preparation method provided by the invention, the inorganic powder as a raw material is added into the carbon cloth / resin composite material to prepare a carbon cloth wet type frictional material. Characteristics such as high hardness, wear resistance, and excellent thermal property of the inorganic powder are blended into the carbon cloth / resin composite material well; and meanwhile, the interface interaction and mechanical engagement among the components are further enhanced, so that the mechanical property and the frictional wear property of the carbon cloth frictional material are greatly improved.
Owner:SHAANXI UNIV OF SCI & TECH

Real-time earth-rock dam body monitoring system with waste slag field arranged behind dam

The invention discloses a real-time earth-rock dam body monitoring system with a waste slag field arranged behind a dam. The system comprises a monitoring module, a data processing module, a safety state evaluation module, an early warning and alarm module and a simulation display module, wherein the monitoring module comprises a wireless sensor network, a strain sensor assembly and displacement sensors, the data processing module comprises a collection central station, a signal conditioner and a signal transmission device, the safety state evaluation module comprises a microprocessor, the early warning and alarm module comprises an analysis processor and an alarm device, and the simulation display module comprises a three-dimensional GIS simulation platform. By means of the real-time earth-rock dam body monitoring system, health of an earth-rock dam body can be monitored in real time, the residual life of the earth-rock dam body can be predicted according to monitoring data, and the unprecedented height is reached on the aspect of complete coverage and all-weather monitoring.
Owner:江苏南京地质工程勘察院

Heat insulation fabric and preparation method thereof

The invention discloses a heat insulation fabric and a preparation method thereof, and relates to the technical field of fabrics. The thermal insulation fabric is prepared by using a magnetic field to assist wet spinning of the modified silicon dioxide aerogel and the polyamide fiber and then oxidizing the acrylic acid at a high temperature; firstly, nano titanium dioxide is prepared through catalysis of modified polyurethane, the mechanical property of silicon dioxide aerogel is improved, and nano titanium dioxide has an excellent anti-ultraviolet effect and can further improve the heat insulation performance of the fabric; secondly, applying a magnetic field to assist the modified silicon dioxide aerogel and the polyamide fiber in wet spinning, and then decomposing acrylic acid at high temperature; the appearance of the nano titanium dioxide can be adjusted by applying a magnetic field, and the ultraviolet protection effect is improved; after the acrylic acid is decomposed, slender nano grooves and holes are left in the fabric, and the slender nano groove structure can increase the contact area between fibers and increase the heat transfer path, so that the fabric has an ultralow heat conductivity coefficient and achieves the effects of heat insulation and ultraviolet prevention.
Owner:QINGDAO YUEERWAN CLOTHING CO LTD

Intelligent monitoring type power transmission circuit tower structure

The invention discloses an intelligent monitoring type power transmission circuit tower structure. The intelligent monitoring type power transmission circuit tower structure includes a power transmission circuit tower and an intelligent monitoring system arranged on the power transmission circuit tower; and the system includes a monitoring module, a data processing module, a security state evaluation module, an early warning and alarm module and a simulation display module, wherein the monitoring module includes a wireless sensor network, a strain sensor assembly and a displacement sensor, the data processing module includes a collection center station, a signal conditioner and a signal transmission device, the security state evaluation module includes a microprocessor, the early warning and alarm module includes an analysis processor and an alarm, and the simulation display module includes a 3D GIS simulation platform. With the intelligent monitoring type power transmission circuit tower structure of the invention adopted, real-time monitoring on the health of the power transmission circuit tower can be realized, and the remaining life of the power transmission circuit tower structure can be monitored according to monitoring data. The intelligent monitoring type power transmission circuit tower structure is accurate and intelligent.
Owner:湛江中汇电力咨询有限公司

High-conductivity manganese iron phosphate precursor, lithium manganese iron phosphate and preparation method

The invention discloses a high-conductivity manganese iron phosphate precursor, lithium manganese iron phosphate and a preparation method, and belongs to the technical field of lithium ion battery materials. The preparation method of the ferromanganese phosphate precursor comprises the following steps: adding a manganese source, an iron source and a phosphorus source into a nitric acid solution, then adding nano silicon dioxide, and stirring and carrying out a constant-temperature hydrothermal reaction to obtain an intermediate; adding the intermediate into an HF solution for soaking to obtain a ferromanganese phosphate precursor; the lithium manganese iron phosphate prepared by adopting the manganese iron phosphate precursor, glucosylated carbon nanotubes and a lithium source through wet ball milling and calcination is good in specific capacity and rate capability and high in conductivity.
Owner:HUNAN YUNENG NEW ENERGY BATTERY MATERIALS CO LTD

Method and system for realizing front-end state change management

ActiveCN111078220AUpdate element stateReduce the number of timesSoftware engineeringEnergy efficient computingChange management (ITSM)Operating system
The invention discloses a method and a system for realizing front-end state change management, and belongs to a front-end Angular technology framework. The technical problem to be solved by the invention is how to realize logic of refreshing an element state when an interface element changes, and meanwhile, the times of repeatedly requesting the rear end are reduced; the adopted technical scheme is as follows: the method comprises the following steps: when data of a front-end interface or a button has a state change, a service is shared in father and child components through an anchor dependent injection mechanism, thus monitoring a father and child component home internal state change event through the service; the father and child components respond, and unified management of state change of a front-end interface is achieved. The system comprises a service creation module, a Subject object subscription module, a service instance introduction module, an interface element state updating module and a Subject monitoring cancellation module.
Owner:SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD

Method for efficiently dispersing modified carbon nano tubes

The invention discloses a method for efficiently dispersing modified carbon nano tubes. The method is characterized by specifically comprises the following steps: (1) preprocessing the carbon nano tubes; (2) preparing a carbon nano tube dispersing solution; (3) preparing a graphene dispersing solution; and (4) enabling phase change of the materials; (5) preparing a graphene / carbon nano tube dispersing agent. According to the method, the carbon nano tubes are preprocessed; the acid mist generated at high temperature is used for etching the carbon tubes, so that the carbon tubes are high in dispersing performance, and the fusion with graphene in later period is ensured; the carbon nano tube are ultrasonically processed under the effects of absolute ethyl alcohol and hydrogen peroxide, so that the dispersing effect is completely achieved, and the carbon nano tubes can be produced as mass; graphene and epoxy resin are ultrasonically processed through absolute ethyl alcohol, and therefore, an uniformly-dispersed multi-layer graphene ethyl alcohol solution can be obtained; after the phase change of the graphene / carbon nano tube composition material, the interfacial interaction of graphene and the carbon nano tubes can be improved, and the effect of an interfacial compatibilizer can be achieved.
Owner:QINGDAO ZHONGTIAN XINDA BIOTECH R & D

Antiseptic polystyrene building material loading transition metal and preparing method thereof

The invention discloses an antiseptic polystyrene building material loading transition metal. The antiseptic polystyrene building material is prepared from, by weight, 6-8 parts of zirconium oxychloride, 7-9 parts of nickel chloride, 10-14 parts of graphene oxide, 20-30 parts of styrene, 0.1-0.2 part of dibenzoyl peroxide, 100-110 parts of polystyrene, 0.3-1 part of salicylanilide, 2-3 parts of ammonium metaborate, 1-2 parts of triphenyl(phenylmethyl)-phosphonium chloride, 0.7-1 part of sodium benzoate, 0.8-2 part of diazolidinyl urea, 1-2 parts of octyl isothiazolinone, 6-7 parts of wollastonite powder and 1-3 parts of oxidized polyethlene wax. As octyl isothiazolinone, triphenyl(phenylmethyl)-phosphonium chloride and sodium benzoate are added, the antiseptic performance and comprehensive performance of the finished product can be effectively improved.
Owner:江海涛

Modified lithium iron phosphate, preparation method thereof and lithium ion battery

The invention provides modified lithium iron phosphate, a preparation method thereof and a lithium ion battery. The preparation method of the modified lithium iron phosphate comprises the following steps: carrying out controlled oxidation reaction on chemical expanded graphite and concentrated sulfuric acid containing an oxidant to obtain controlled oxidation chemical expanded graphite; in the presence of a solvent, mixing the chemically expanded graphite subjected to oxidation control, a lithium source compound, a phosphorus source compound and an iron source compound, and performing hydrothermal synthesis reaction to obtain a modified lithium iron phosphate precursor; and calcining the modified lithium iron phosphate precursor in inert gas to obtain the modified lithium iron phosphate. The modified lithium iron phosphate prepared by the preparation method has relatively good conductivity, so that the modified lithium iron phosphate has very excellent cycle performance and high rate performance in the application process.
Owner:SUNWODA ELECTRIC VEHICLE BATTERY CO LTD

Method for uniformly fluorinating zinc oxide powder

The invention relates to a method for uniformly fluorinating zinc oxide powder. The method comprises the following steps: (1) treating the zinc oxide powder with a surface coupling agent: adding the zinc oxide powder into a mixed solution of a titanate coupling agent and alcohol; treating at the temperature of 90 to 100 DEG C for 3 to 5h; after washing, drying in a drying box for 2h; (2) carryingout surface polyvinyl alcohol coating treatment on the zinc oxide powder: putting the zinc oxide powder treated by step (1) into a polyvinyl alcohol water solution; after reacting; then centrifuging and washing with de-ionized water to obtain fluorinated zinc oxide powder with a surface coated with the polyvinyl alcohol; (3) carrying out fluorination treatment on the zinc oxide powder: adding thezinc oxide powder treated by above steps into a polytetrafluoroethylene container containing a certain amount of a hydrofluoric acid solution; reacting for 5 to 20min; then centrifuging and washing with the de-ionized water to obtain the uniformly fluorinated zinc oxide powder. Compared with the prior art, the method provided by the invention has the advantages of simplicity and feasibility, low cost, convenience and rapidness and the like.
Owner:HENAN INST OF ENG

Carbon-based material reinforced interpenetrating network conductive hydrogel as well as preparation and application thereof

The invention provides carbon-based material reinforced interpenetrating network conductive hydrogel as well as preparation and application thereof, and belongs to the field of flexible electronics and sensing materials. The method comprises the following steps: (1) preparing a carbon-based material organic dispersion liquid; and (2) preparing the interpenetrating network conductive hydrogel. The prepared interpenetrating network conductive hydrogel is composed of an SF network and a hydrophobicity-associated PAM network, a carbon-based material organic dispersion liquid is added into the SF network and the hydrophobicity-associated PAM network, so that the carbon-based material is uniformly dispersed in the gel network, the carbon-based material is easily mutually pulled with an SF molecular chain and a PAM molecular chain in the gel network to form electrostatic interaction and hydrogen bonds, and the conductivity of the hydrogel is improved. Meanwhile, the PAM molecular chain, the SF molecular chain and the carbon-based material have rich hydrophilic groups, so that a plurality of dynamic hydrogen bonds can be formed, and the interface interaction between the conductive material and a polymer matrix is greatly improved; the interpenetrating network conductive hydrogel prepared by the invention is used as a response thixotropic sensor and has excellent sensing performance.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

High water-resistant glass microspheres for reflective film and preparation method thereof

The invention discloses high water-resistant glass microspheres for a reflective film and a preparation method thereof. The high water-resistant glass microspheres for a reflective film are prepared by using the following raw materials in parts by weight: 38-54 parts of yellow sand, 23-37 parts of idocrase, 18-34 parts of albite, 20-35 parts of rhyolite, 14-27 parts of boracite, 12-18 parts of barium carbonate, 10-15 parts of strontium carbonate, 4-8 parts of lanthanum nitrate, 4-7 parts of diethylenetriamine, 3-4 parts of ethoxylated aminopropyl polydimethylsiloxane, 5-8 parts of dioctadecyl dimethyl ammonium chloride and 11-14 parts of an additive. The glass microspheres prepared by using the method not only have a good reflective effect and have the index of refraction over 2.05, but also have the advantages of excellent high temperature resistance, corrosion resistance, water resistance, and aging resistance, and have a wide application scope and a long service life.
Owner:HEFEI DINGLIANG OPTICAL TECH

Real-time monitoring and protection system for slopes at two sides of water channel or river channel

The invention discloses a real-time monitoring and protection system for slopes at two sides of a water channel or a river channel. The system includes a monitoring module, a data processing module, a security state evaluation module, an early warning alarm module and a simulation display module; the monitoring module includes a wireless sensor network, a strain sensor assembly and a displacement sensor; the data processing module includes an acquisition center station, a signal conditioning device and a signal transmission device; the security state evaluation module comprises a microprocessor; the early warning alarm module includes an analysis processor and an alarm; and the simulation display module comprises a three-dimensional GIS simulation platform. With the system of the invention adopted, real-time monitoring on the health of a slope structure can be realized, and the remaining life of the slope structure can be predicted according to monitoring data. The real-time monitoring and protection system is unprecedentedly advantageous in full coverage and around-the-clock monitoring.
Owner:北京大恒软件技术有限公司

High-performance double-sided tooth crawler belt for robot and preparation method of high-performance double-sided tooth crawler belt

The invention discloses a high-performance double-sided toothed crawler belt for a robot and a preparation method thereof.The high-performance double-sided toothed crawler belt comprises a synchronous belt framework and a sizing material wrapping the synchronous belt framework, and the synchronous belt framework comprises a synchronous belt body, first belt teeth arranged on the inner side of the synchronous belt body and second belt teeth arranged on the outer side of the synchronous belt body; the rubber material is prepared from the following raw materials in parts by weight: 5 to 8 parts of polysiloxyborane hyperbranched polymer containing epoxy group, 10 to 30 parts of fluorinated phosphazene rubber, 10 to 20 parts of epoxy nitrile rubber, 70 to 90 parts of nitrile rubber and 2-[3-(2H-benzotriazole-2-yl)-4-hydroxyphenyl] The adhesive is prepared from the following components in parts by weight: 8 to 13 parts of ethyl 2-methacrylate / vinyl trimethoxy silane / phenyl vinyl sulfone / hydroxyethyl acrylate copolymer, 2 to 4 parts of octavinyl-POSS (Polyhedral Oligomeric Silsesquioxane), 0.8 to 1.2 parts of zinc 8-hydroxyquinoline, 5 to 8 parts of vulcanizing agent, 30 to 40 parts of filler and 0.8 to 1.2 parts of potassium hydroxide. The double-sided tooth crawler disclosed by the invention is good in aging resistance, excellent in high and low temperature resistance and wear resistance, good in mechanical property and long in service life.
Owner:NINGBO FULONG SYNCHRONOUS BELT