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41results about How to "Adjustable porosity" patented technology
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Method for preparing ceramic reinforced metal-based porous composite material
The invention discloses a low-cost low-temperature quick preparation method for nano Al2O3 ceramic original position enforcing Fe-Cr-Ni-base high temperature alloy porous compound material. Initializing powder is prepared in a powder metallurgy mixing component method, nano grade Fe2O3, Cr2O3, Ni2O3 powder and nano grade Al, Ni, Cr, and Fe primitive powder are converted into mass percentage according to the stoichiometric proportion of the reaction formula to be weighed and mixed, and are performed with non-pressure sintering at 800 DEG C under the vacuum condition after being compressed into billet, the whole sintering process is performed through the aluminum thermal reaction method, and minute multi-alloy elements are matched in the component compounding ratio to adjust the air hole rate and to enhance the mechanical property of the material. The method can greatly reduce the preparation temperature, reduce the preparation time, and also reduce the production cost.
Owner:XI AN JIAOTONG UNIV
Solid phase microextraction fiber for polycyclic aromatic hydrocarbon enriching detection and manufacturing method thereof
ActiveCN108579708ASynthetic strongNot easy to fall offComponent separationOther chemical processesMass spectrum analysisCombined use
The invention discloses a solid phase microextraction fiber for polycyclic aromatic hydrocarbon enriching detection and a manufacturing method thereof, and belongs to the technical field of contaminant detection. The invention provides a method capable of being used for manufacturing a solid phase microextraction coating on different fiber substrates and realizing combined use with gas chromatography or gas chromatography-mass spectrum, and the method is used for polycyclic aromatic hydrocarbon contaminant detection. Metal fiber is used as a substrate; dopamine is polymerized on the surface ofthe substrate so as to provide functional groups for polydopamine; the polydopamine is firstly combined with COF material single ligands so as to provide an anchor point; a PDA-COP composite layer isfinally synthesized and is used for solid phase microextraction. The solid phase microextraction fiber has the advantages that through the great pi bond effects between the solid phase microextraction fiber and the polycyclic aromatic hydrocarbon, the adsorption effect on the polycyclic aromatic hydrocarbon can be enhanced; during the enrichment, a certain separation effect is achieved; the substrate pretreatment step of samples can be effectively simplified; meanwhile, the enriching capability of the polycyclic aromatic hydrocarbon contaminants can be greatly improved; the detection limit ofthe polycyclic aromatic hydrocarbon contaminants can be reduced.
Owner:JIANGNAN UNIV
Beautiful millettia root seed scaled seedling-growing method
ActiveCN105052479ARealize large-scale seedling cultivationTroubleshooting Irregular GerminationGrowth substratesCulture mediaPre treatmentRiver sand
The invention relates to a beautiful millettia root seed scaled seedling-growing method which comprises seed pre-treatment, accelerating germination, cup filling, seedling-growing and transplanting, wherein the accelerating germination is carried out in a sand bed and the sand bed is prepared by pouring river sand with different mesh numbers which are uniformly mixed according to weight parts into a seedbed to be leveled and disinfected; the cup filling comprises filling a nutritional cup with beautiful millettia root seeds exposing white after accelerating germination, wherein the nutritional cup comprises a cylindrical cup body which is opened at the upper end and is provided with a plurality of square holes at the lower end and a repeatedly used cup tray located below the cup body for supporting the cup body. The beautiful millettia root seed scaled seedling-growing method provided by the invention has the advantages of being neat in germination, robust in seedling, high in seedling success rate, short in seedling time, low in seedling cost and the like.
Owner:GUANGXI BOTANICAL GARDEN OF MEDICINAL PLANTS
Method for preparing biological scaffold by 3D printing
InactiveCN105903078AGood biocompatibilityNo toxicityAdditive manufacturing apparatusProsthesisBiologic scaffoldNormal bone
The invention provides a method for preparing a biological scaffold by 3D printing. The method comprises the steps of grinding allogeneic bones or heterogeneous bones at a low temperature in a freezing grinder to obtain a printing material, modeling 3D printing with the aid of a computer, and then performing post treatment in a genipin solution. The prepared biological scaffold has good biological compatibility, and the bone graft material does not have toxicity, rejection, mutagenicity or antigenicity in vivo, and does not disturb bone and tissue regeneration; the prepared biological scaffold can be gradually degraded and absorbed and replaced by autologous bone tissues, can bear the pressure close to 20MPa with normal bone cortex, and has good initial mechanical properties; and the elastic modulus is gradually reduced, stress shielding is avoided, fracture, collapse and loosening of implants in the long-term healing process are avoided, bone fusion can be accelerated, and the implants can be finally completely converted into autologous bone tissues.
Owner:THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA
Passivator for treatment of heavy metal pollution of soil and preparation method of passivator
InactiveCN111171830AHigh organic contentIncrease cation exchange capacityOther chemical processesOrganic fertilisersCation-exchange capacityClay minerals
The invention discloses a passivator for treatment of heavy metal pollution of soil. The passivator comprises the following components in parts by weight: 10 to 20 parts of dewatered sludge, 10 to 15parts of lime, 15 to 20 parts of clay minerals, 10 to 15 parts of rot straw slag and 30 to 40 parts of modified biochar. The passivator for treatment of heavy metal pollution of soil prepared in the invention is applicable to soil remediation at heavy metal polluted sites. The main components of the passivator are all natural materials; no secondary pollution is generated; the passivator has a good passivating effect on heavy metals in farmland soil, can increase the organic matter content and the cation exchange capacity of the soil, prevent and treat soil hardening, effectively improve soiltexture, adjust soil porosity, provide necessary nutrient substances for microbial survival, improve the physical and chemical properties and microbial flora of the soil and enhance the production potential of the soil.
Owner:浙江慧丰环保科技有限公司
Rock slope vegetation system and vegetation planting construction method
PendingCN114351733ASimple structureScientific and reasonable designFlowers cultivationFabaceae cultivationNutrientSoil science
The invention discloses a rock slope vegetation system and a vegetation planting construction method, and aims to solve the technical problem that vegetation is difficult to grow due to the fact that part of slope surfaces have inverted slopes and smooth surfaces and no conditions for rooting of the vegetation and storage of nutrients and water exist in anti-gravity growth of the vegetation. The rock slope vegetation system comprises an iron gauze, a reinforcing mesh, a vegetation concrete base material base layer, a vegetation concrete base material surface layer and a vegetation layer. The vegetation planting construction method sequentially comprises the steps of rock slope surface treatment, surveying and setting-out, reinforcement system construction, spraying system construction, vegetation concrete spraying construction and slope surface treatment and maintenance. The device is simple in structure, scientific and reasonable in design and convenient to use, and can effectively solve the technical problem that vegetation is difficult to grow due to the fact that a part of slope surfaces have inverted slopes and smooth surfaces and no conditions for rooting of the vegetation and storage of nutrients and water exist in anti-gravity growth of the vegetation.
Owner:CHINA MCC5 GROUP CORP
Method for preparing foam ceramic heat-insulation board by utilizing gold ore tailings
InactiveCN106699217AReduce manufacturing costWide variety of sourcesCeramic materials productionCeramicwareFoaming agentPore diameter
The invention belongs to the field of building materials and discloses a method for preparing a foam ceramic heat-insulation board by utilizing gold ore tailings. The foam ceramic heat-insulation board is characterized by being prepared from the following components in parts by weight: 25 weight percent to 70 weight percent of the gold ore tailings, 0 to 15 weight percent of pottery stone, 5 weight percent to 20 weight percent of feldspar, 0 to 25 weight percent of clay, 0 to 15 weight percent of sandstone, 5 weight percent to 10 weight percent of coal gangue, 0.3 weight percent to 1.5 weight percent of additional SiC, 0.5 weight percent to 2.0 weight percent of additional Fe2O3 and 0.5 weight percent to 1.5 weight of an additional grinding aid. The method takes the gold ore tailings as a main raw material and takes the SiC, the coal gangue and the Fe2O3 as a compound foaming agent; the prepared foam ceramic heat-insulation board has a uniform and controllable pore diameter and low cost and a process is simple.
Owner:UNIV OF JINAN
Metal organic framework modified stannous sulfide composite photocatalyst as well as preparation method and application thereof
ActiveCN107913675ALarge specific surface areaIncreased toxicityWater/sewage treatment by irradiationOther chemical processesMetal-organic frameworkWastewater
The invention discloses a metal organic framework modified stannous sulfide composite photocatalyst as well as a preparation method and application thereof. The composite photocatalyst takes a metal organic framework MIL-53(Fe) as a carrier and is loaded with stannous sulfide. The preparation method of the composite photocatalyst comprises the following steps: mixing MIL-53(Fe) with stannous sulfide, adding solution containing S<2->, and carrying out precipitation reaction, so that the metal organic framework modified stannous sulfide composite photocatalyst is obtained. The composite photocatalyst disclosed by the invention has the advantages of environment friendliness, large specific surface area, many reaction sites, high photogenerated electron-hole utilization rate, high photocatalytic activity, good stability and corrosion resistance, and the preparation method has the advantages of simplicity in operation, low raw material cost, low energy consumption, short consumed time and easy-to-control conditions. The composite photocatalyst disclosed by the invention can be used for degrading hexavalent chromium wastewater, has the advantages of high degradation efficiency, simple application method, low cost and no secondary pollution and has a good practical application prospect.
Owner:HUNAN UNIV
Preparation method of nano-hydroxyapatite-doped porous bionic bone scaffold
InactiveCN106806940AGood bioactivity and osteoconductionImprove mechanical propertiesTissue regenerationProsthesisBiocompatibility TestingAdhesion process
The invention provides a preparation method of a nano-hydroxyapatite-doped porous bionic bone scaffold. According to the preparation method, a hyaluronic acid-gelatin-nano-hydroxyapatite cross-linked composite porous scaffold with good mechanical strength is prepared from hyaluronic acid, gelatin and nano-hydroxyapatite by virtue of a freeze-drying method and a chemical cross-linking method. The porous composite scaffold prepared by virtue of the preparation method has uniform aperture and very good cell adhesion capacity and mechanical strength and further has osteoconductivity, hole walls are thin, and pore spaces are penetrated. The preparation method has the advantages that the composite scaffold can be used for relatively truly simulating a bone tissue microenvironment, and parameters of aperture, porosity, degradation rate, water absorption rate, mechanical strength and the like of the scaffold can be adjusted and controlled by adjusting the concentration, volume ratio and freeze drying conditions of each component; the adopted materials have good biocompatibility, and the prepared scaffold can meet an internal porous structure of bone tissues; and the sources of the material are sufficient, and the preparation process is simple.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
VO2 film with three-dimensional ordered porous network structure, and preparation method and application thereof
ActiveCN110092591AThe ingredients are simple and clearUniform compositionVanadium oxidesCoatingsMicrospherePolystyrene microsphere
The invention discloses a VO2 film with a three-dimensional ordered porous network structure, and a preparation method and application thereof. The method stacks polystyrene microspheres on a glass substrate through a vertical immersion method, so that a die plate preparing a VO2 film can be formed; the die plate is immersed into a VO2 precursor solution, so that the slit between the polystyrene microspheres can be fully filled with V2O5 in the precursor solution; the V2O5 is converted into VO2 through follow-up drying and annealing process; the polystyrene microspheres are heated to evaporate, and the VO2 can form a three-dimensional ordered porous network shape; and the film has a complete three-dimensional ordered porous network structure. As the whole structure has holes, the holes canseparate fractures generated between VO2 particles on some frame, so that fracture force can be separated, and phase transition stress can be diluted.
Owner:西安艾斯达特新材料科技有限公司
Calixarene porous polymer with ultra-high removal rate and ultra-high adsorption capacity and application of calixarene porous polymer to selective separation of dyes
PendingCN114085345AImprove stabilityAchieve modularityOther chemical processesWater contaminantsActivated carbonCross linker
The invention discloses a calixarene porous polymer with ultra-high removal rate and ultra-high adsorption capacity and application of the calixarene porous polymer to selective separation of dyes. According to the invention, octafluoronaphthalene and decafluorobiphenyl are used as cross-linking agents, two calixarene-based porous polymers, namely POP-8F and POP-10F, are synthesized through simple and mild reaction without using a catalyst, show extraordinary adsorption capacity and adsorption rate on cationic dyes including rhodamine B (RhB), methylene blue (MB) and crystal violet (CV), and exceed those of all previously reported porous adsorbents. The calixarene-based porous polymers comprise COFs, MOFs, POPs, a biomass adsorbent, activated carbon and the like. More importantly, the calixarene-based POPs can effectively remove cationic dyes through simple column filtration, and shows excellent reusability. Because of the characteristics, the POP-8F and the POP-10F become porous adsorption materials which can be used for treating and purifying water pollutants.
Owner:SUZHOU UNIV
Anhydrous calcium hydrophosphate/hydroxyapatite biphasic porous microsphere material, and preparation method and application thereof
ActiveCN110885070AImproves biomineralizationPromote degradationInorganic non-active ingredientsGranular deliveryCalcium biphosphateBone tissue engineering
The invention discloses an anhydrous calcium hydrophosphate / hydroxyapatite biphasic porous microsphere material, and a preparation method and an application thereof. The anhydrous calcium hydrophosphate / hydroxyapatite biphasic porous microsphere material is particle microspheres formed by coexistence of 10%-90% by mass of anhydrous calcium hydrophosphate and 90%-10% by mass of hydroxyapatite, theparticle diameter is 15-65 [mu]m, the surface is porous, the pore size range is 1-50 [mu]m, and the porosity is 33%-65.34%, and the anhydrous calcium hydrophosphate / hydroxyapatite biphasic porous microsphere material is prepared by a hydrothermal precipitation method; the anhydrous calcium hydrophosphate / hydroxyapatite biphasic porous microsphere material disclosed by the invention has relativelygood biocompatibility and biomineralization capability, relatively short degradation period, and high pore size and porosity, is an ideal biomedical material, and can be used for constructing bone tissue engineering scaffolds or used as a sustained-release carrier of antibiotics, antituberculous compounds, growth factors, antitumor agents and the like.
Owner:KUNMING UNIV OF SCI & TECH
Porous plastic crystal electrolyte for all-solid-state metal-air battery, preparation method of porous plastic crystal electrolyte and all-solid-state metal-air battery
ActiveCN111269509AWith deformationProne to deformationFuel and secondary cellsFinal product manufactureAll solid statePlastic crystal
The invention provides a porous plastic crystal compound. The porous plastic crystal compound has a porous morphology formed by stacking sphere-like particles; wherein the plastic crystal comprises succinonitrile. The invention provides a porous plastic crystal compound, which has the characteristics of good stability, high ionic conductivity, adjustable porosity and the like and is applied to anall-solid-state metal-air battery. The porous plastic crystal compound serves as an electrolyte interlayer and is introduced into a solid-state positive electrode; the interface impedance between theelectrolyte interlayer and the electrode can be effectively reduced; besides, due to the adjustable porosity, gas diffusion is not hindered while tight contact with the active material is realized byintroducing into the solid-state positive electrode; according to the invention, the three-phase interface is effectively increased, reaction sites are increased, the problems of high interface impedance and few positive electrode three-phase interfaces of an existing metal-air battery are solved, and the electrochemical properties such as the discharge capacity of the all-solid-state lithium-oxygen battery are improved.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Variable-diameter spinneret and processing device of hollow fiber membrane tows and membrane component
InactiveCN109078498AAdjustable porosityRealize regular arrangement of arbitrary filling densitySemi-permeable membranesMembranesPorosityDiameter ratio
The invention relates to a variable-diameter spinneret and a processing device of hollow fiber membrane tows and membrane component. The variable-diameter spinneret comprises a central circular pipe,a middle circular pipe, an outer cavity and a first drive mechanism and is characterized in that the central circular pipe, the middle circular pipe and the outer cavity are sequentially arranged in asleeved manner, the first drive mechanism drives the middle circular pipe to vertically move, and the bottoms of the central circular pipe, the middle circular pipe and the outer cavity are parallelto one another. The variable-diameter spinneret has the advantages that a membrane filament obtained by regulating the position of the middle circular pipe comprises large-diameter membrane filament heads at two ends and a small-diameter membrane filament middle section, and the porosity of the membrane filament middle section can be regulated by controlling the diameter ratio of the membrane filament heads to the membrane filament middle section during subsequent binding and membrane component assembling to achieve the optional filling density rule distribution of the membrane component.
Owner:DONGGUAN UNIV OF TECH
A kind of preparation method of porous glass filter element for water purifier
ActiveCN104692667BUniform pore size distributionGood chemical stabilityGlass shaping apparatusMembrane filtersAdhesiveWater filter
The invention discloses a method for preparing a porous glass filter element for a water purifier. The method comprises the following steps: crushing and ball-milling the recycled glass, mixing with a certain amount of boric acid, spraying a certain amount of inorganic salt solution, drying, adding an adhesive of a certain mass, uniformly mixing, pressing, molding, and sintering, thereby obtaining an initial sample; adding the sample into water at the temperature of 100 DEG C or ultrasonic waves for cleaning, thereby obtaining porous glass with through holes. According to the porous glass filter element disclosed by the invention, the problems such as high preparation temperature, low strength, extremely large pore diameter and the like are solved, and the porous glass filter element has the advantages of excellent physical performance, high chemical stability, low preparation temperature, low cost, simple process flow and the like.
Owner:SHAANXI UNIV OF SCI & TECH
Organic porous framework material with adsorptive desulfurization performance and preparation method thereof
ActiveCN113509906ALarge specific surface areaAdjustable porosityOther chemical processesHydrocarbon oils refiningAlkaneDouble bond
The invention discloses an organic porous framework material with adsorptive desulfurization performance and a preparation method thereof. According to the principles of the Knoevenagel reaction, an aldehyde compound and a cyano compound with active alpha-hydrogen atoms are subjected to a condensation reaction under a weakly alkaline condition, so a graphene-like organic porous framework material product in which reaction monomers are connected by carbon-carbon double bonds is finally obtained. The prepared material has a large-area conjugated structure unit, and due to the structural characteristic, the material has a more remarkable adsorption effect on aromatic thiophene sulfur compounds compared with alkane compounds.
Owner:XI AN JIAOTONG UNIV
Variable-diameter spinneret, hollow fiber membrane tow processing device and membrane module processing device
ActiveCN110496539AAdjustable porosityRealize regular arrangement of arbitrary filling densityMembranesSemi-permeable membranesDiameter ratioEngineering
The invention relates to a variable-diameter spinneret, a hollow fiber membrane tow processing device and a membrane module processing device. The variable-diameter spinneret comprises a central circular tube, a middle circular tube and an outer cavity which are sequentially arranged in a sleeving mode, and a first driving mechanism for driving the middle circular tube to vertically move up and down, and the bottom of the central circular tube, the bottom of the middle circular tube and the bottom of the outer cavity are flush. A membrane filament obtained through regulating the position of the middle circular tube by the variable-diameter spinneret comprises membrane filament heads with a large diameter at the two ends and a membrane filament middle section with a small diameter, and theporosity of the membrane filament middle section can be regulated by controlling the diameter ratio of the membrane filament heads to the membrane filament middle section in the subsequent bundling and assembling process of membrane modules in order to achieve the regular arrangement of the membrane modules with any filling density.
Owner:DONGGUAN UNIV OF TECH
Porous ultra-high molecular weight poly fluorine-containing olefin hollow microspheres and preparation method thereof
The preparation method comprises the following steps: (1) vacuumizing a reaction kettle, introducing nitrogen, and adding a metal nano catalyst and reactants according to a certain mass ratio; (2) heating the reaction kettle to 30-60 DEG C, stirring at the rotating speed of 500-1500 r / min, and adding a pore-foaming agent; (3) maintaining the rotating speed at 500-1500 r / min, and filling a fluorine-containing monomer to reach the polymerization reaction pressure; and (4) centrifuging, washing and drying the polymerization product. The molecular weight of the obtained fluorine-containing olefin hollow microspheres is 1.5-3.0 times that of a polymer obtained through common free radical polymerization, the molecular weight distribution is narrow, the size of the microspheres is 10-200 m, and the pore diameter is 5-20 m. And the obtained product has high porosity and is applied to lithium battery binders, diaphragms and high-efficiency catalyst carriers. The method is mild in reaction condition, low in cost and environment-friendly, and has an excellent industrial prospect.
Owner:ZHEJIANG UNIV OF TECH
Degradable metal patch and preparation method thereof
ActiveCN112843329AFacilitates cell adhesionPrevent tissue adhesionSurgeryProsthesisNutrientPolymer chemistry
The invention provides a degradable metal patch and a preparation method thereof. The metal patch has a through hole structure with the porosity of 20%-50%. The preparation method of the degradable metal patch comprises the following steps: preparing a wire material; pre-treating the wire material; cutting the wire into sections, dispersing and mixing; performing cold pressing and preforming; and performing hot-press molding. The metal patch has excellent mechanical properties and biocompatibility, can protect damaged tissues, can convey substances such as nutrient substances and metabolites at the same time, and is gradually degraded along with a tissue healing process.
Owner:苏州晶俊新材料科技有限公司
A kind of preparation method and application of modified oyster shell powder
ActiveCN113087549BLow reaction temperatureImprove versatilityCalcareous fertilisersFertilizer mixturesFertilizerCompost
The invention relates to the field of material modification technology and aerobic fertilizer making process, in particular to a preparation method of modified oyster shell powder and its application as a compost additive to promote composting. The modified oyster shell powder obtained by fixing fulvic acid to oyster shells by a solid-phase grafting method is used as an aerobic composting additive. The immobilized fulvic acid of the present invention not only overcomes the defect of leaching loss of fulvic acid, but also uses porous oyster shell powder to turn waste into wealth, improves the fermentation efficiency of aerobic composting and significantly reduces nitrogen loss. The invention has simple technological process, low cost and good application value.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
A method for preparing biological scaffolds by 3D printing
InactiveCN105903078BGood biocompatibilityNo toxicityAdditive manufacturing apparatusProsthesisNormal boneComputer-aided
Owner:THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA
Tunnel lining joint waterproof sealing gasket easy to compress
PendingCN114526097AMeet the waterproof requirements of joint water pressureMeet waterproof requirementsUnderground chambersHydro energy generationBilateral symmetryGasket
The invention discloses an easy-to-compress tunnel lining joint waterproof sealing gasket which comprises a sealing gasket body arranged in a waterproof groove, and the sealing gasket body is provided with a mounting end capable of being embedded into the waterproof groove of a shield segment and an extrusion end capable of being matched with a sealing gasket body of another shield segment for extrusion. Through holes are formed in the waterproof sealing gasket in a bilateral symmetry mode with the center axis of the cross section as the center axis, and the through holes can be convex-like through holes, inverted convex-like through holes, half convex-like through holes, round through holes and inverted-U-shaped through holes. The waterproof sealing gasket is sequentially provided with an inverted-U-shaped through hole, a circular through hole, a semi-convex-like through hole, a convex-like through hole and an inverted convex-like through hole from bottom to top. The lining segments can be tightly attached after being spliced, the closing deformation direction is controllable, the contact force is uniform, the lining segments have the advantages of being efficient and stable under the long-term load effect, and the assembling force of the waterproof sealing gasket can be remarkably reduced.
Owner:GUANGXI UNIV
Preparation method of super-crosslinked polymer supported molecular sieve and Fe catalyst and application of super-crosslinked polymer supported molecular sieve and Fe catalyst in production of divinylbenzene
ActiveCN113198533ALarge specific surface areaAdjustable porosityMolecular sieve catalystsMolecular sieve catalystPtru catalystFixed bed
The invention discloses a preparation method of a hyper-crosslinked polymer loaded molecular sieve and Fe catalyst and application of the hyper-crosslinked polymer loaded molecular sieve and Fe catalyst in production of divinylbenzene. The preparation method comprises the following step of: A1, constructing a reflux condensation device, sequentially adding 0.9302 g of diferrocene, 0.39 g of benzene and 0.4948 g of 1, 2-dichloroethane into a 50ml two-neck round-bottom flask, then adding an external crosslinking agent dimethoxymethane FDA, stirring for 30 minutes, then, rapidly adding 0.8110 g of anhydrous FeCl3 into the device to obtain a mixture K, and heating the mixture to complete condensation polymerization reaction to generate a microporous structure. According to the present invention, the super-crosslinked polymer is adopted as the carrier to load the ZSM-5 molecular sieve and the Fe, the prepared catalyst has high activity and high selectivity on the reaction of catalyzing the synthesis of divinylbenzene from ethylbenzene and diethyl carbonate, the preparation of divinylbenzene from ethylbenzene and diethyl carbonate is performed in a fixed bed reactor, and the whole catalytic reaction has the characteristics of low energy consumption, high selectivity, high activity and the like.
Owner:JIANGSU EVERGREEN NEW MATERIAL TECH
Metal organic framework modified tin sulfide composite photocatalyst and its preparation method and application
ActiveCN107913675BLarge specific surface areaIncreased toxicityWater/sewage treatment by irradiationOther chemical processesMetal-organic frameworkWastewater
Owner:HUNAN UNIV
Surface-coated modified porous calcium phosphate ceramic microspheres and preparation method and application thereof
ActiveCN113135769BAdjustable porosityImprove adhesionTissue regenerationCoatingsCalcium biphosphateMicrosphere
The invention discloses a surface-coated modified porous calcium phosphate ceramic microsphere and a preparation method and application thereof, comprising: 1) uniformly mixing calcium phosphate ceramic powder, an excipient and a pore-forming agent to obtain a solid phase mixture, Add the binder solution into the solid phase mixture and mix evenly to obtain a plastic wet material; 2) Load the plastic wet material into the extrusion device of the extrusion spheronizer to obtain a bar-shaped cylindrical material, and then pour the material into In the spheronization device, the microspheres are obtained by rolling; 3) the bioactive powder is added to the microspheres of the spheronization device to obtain the microspheres coated with bioactive substances; 4) the microspheres are dried and then placed in a sintering furnace for high temperature sintering , to obtain surface-coated modified porous calcium phosphate ceramic microspheres. The size and porous structure of the surface-coated modified porous calcium phosphate ceramic microspheres prepared by the method of the invention can be adjusted, the surface has high biological activity, and has a good application prospect as a bone defect filling and repairing material.
Owner:SOUTH CHINA UNIV OF TECH
Application method of novel environment-friendly insect pheromone sustained-release material
PendingCN112314550AIncrease release rateAdjustable porosityInsect catchers and killersBiotechnologyBiochemical engineering
The invention discloses an application method of a novel environment-friendly insect pheromone sustained-release material. The application method comprises the following steps of 1) packaging 5-10 g of the novel environment-friendly insect pheromone sustained-release material by using a grid bag to prepare a sustained-release lure; and 2) putting the prepared slow-release lure into a universal trapper, and then suspending the trapper at the position 1.2-1.6 m away from the ground. A physical adsorption method is adopted in the application method, the operation process is simple, the cost is low, and popularization is easy.
Owner:南京旭智材料科技有限公司 +1
Loose elastic pad and manufacturing method thereof
InactiveCN104814619AAdjustable densityAdjustable porosityStuffed mattressesSpring mattressesBiomedical engineeringHardness
The present invention relates to the field of special filling pads for chairs, beds or sofas, particularly to a loose elastic pad and a manufacturing method thereof. The loose elastic pad comprises plastic fibers (1) and is characterized in that the plastic fibers (1) is at least divided into three groups with different extending directions, the intersection point positions of various groups of the plastic fibers (1) adopt hot melting adhesion, the end points of all plastic fibers (1) and the envelopes on the outer edges of the outermost side plastic fibers (1) present the rectangular parallelepiped, and the rectangular parallelepiped is the elastic pad (10). The manufacturing method is characterized in that the steps such as feeding, heating, extrusion, molding, drawing, and cutting are sequentially performed. The loose elastic pad of the present invention has characteristics of simple structure, easy manufacturing, moderate hardness, and wide application range.
Owner:上海加福国际贸易有限公司
Method for preparing foamed glass insulation board by coal ash
InactiveCN101597139BImprove protectionSave natural resourcesSolid waste disposalMixed materialsCrusher
The invention relates to a method for preparing a foamed glass insulation board by coal ash. The coal ash and glass powder are respectively put into a ball mill for dry grinding and iron in the coal ash is removed, the coal ash after iron removal, glass powder after grinding and sieving and cerium oxide are dryly ground to form mixed material, the mixed material is put into a steel mould to be pressed into a flat green body; and the pressed green body is put into an aluminum oxide sagger which is evenly spread with aluminium oxide powder at the bottom, put into a silicon carbon rod resistancefurnace to be sintered, cooled and annealed, thus obtaining the foamed glass insulation board. The coal ash is used for preparing the foamed glass insulation board in the invention, which is not onlybeneficial for saving natural resources and reducing production cost but also beneficial for environmental protection. The coal ash can be smashed without a high power crusher and is even in mixing; meanwhile the coal ash contains a great amount of hollow cenospheres and melikaria and has low heat conductivity and thermostability characteristics. The cerium oxide is used as foaming agent to causefoaming temperature to be easily controlled, so as to simplify technology and reduce energy consumption, thus being beneficial for industrialized production.
Owner:SHAANXI UNIV OF SCI & TECH
A three-dimensional ordered porous network structure of vo 2 Thin film and its preparation method and application
ActiveCN110092591BThe ingredients are simple and clearUniform compositionVanadium oxidesCoatingsMicrospherePhysical chemistry
The invention discloses a VO2 film with a three-dimensional ordered porous network structure, and a preparation method and application thereof. The method stacks polystyrene microspheres on a glass substrate through a vertical immersion method, so that a die plate preparing a VO2 film can be formed; the die plate is immersed into a VO2 precursor solution, so that the slit between the polystyrene microspheres can be fully filled with V2O5 in the precursor solution; the V2O5 is converted into VO2 through follow-up drying and annealing process; the polystyrene microspheres are heated to evaporate, and the VO2 can form a three-dimensional ordered porous network shape; and the film has a complete three-dimensional ordered porous network structure. As the whole structure has holes, the holes canseparate fractures generated between VO2 particles on some frame, so that fracture force can be separated, and phase transition stress can be diluted.
Owner:西安艾斯达特新材料科技有限公司
A kind of polyaryletherketone for lithium battery separator
ActiveCN111697190BImprove electrochemical performanceWeight Average Molecular Weight OptimizationSecondary cellsCell component detailsChemical physicsPolyolefin
Owner:NORTHEAST NORMAL UNIVERSITY
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