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62results about How to "Avoid reunion effect" patented technology
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Method for intercalating and stripping two-dimensional crystal titanium carbide nano material by using ammonia water
InactiveCN106185936AAvoid reunion effectLarge specific surface areaNanotechnologyMetallurgySupercapacitor
The invention relates to a method for intercalating and stripping a two-dimensional crystal titanium carbide nano material by using ammonia water. The method comprises the following steps: putting a two-dimensional crystal titanium carbide material into ammonia water, performing intercalation and stripping by using a high-speed shearing machine, and performing washing and vacuum drying, thereby obtaining the two-dimensional crystal titanium carbide nano material of which the interlayer spacing is increased. The two-dimensional crystal titanium carbide nano material provided by the invention is relatively large in interlayer spacing, the aggregation effect of titanium carbide can be overcome to a certain extent, the specific surface area of the two-dimensional crystal titanium carbide nano material can be increased, and the properties of the material in fields of supercapacitors, lithium ion batteries, adsorption and the like can be improved.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Nanometer Ag antimicrobial and preparation method thereof
InactiveCN102613243ABroad-spectrum antibacterialImprove permeabilityBiocideAntifouling/underwater paintsPlasticizerDistilled water
The invention discloses a nanometer Ag antimicrobial comprising nanometer Ag particle, a solubilizer, a water-soluble polymer, a plasticizer, a processing modifier, a solvent, a film-forming assistant, essence, pigment, distilled water or deionized water. The invention also disclosed a preparation method of the nanometer Ag antimicrobial. The preparation method comprises the steps of: adding the nanometer Ag particle into the distilled water or the deionized water, adding the solubilizer and the water-soluble polymer, and stirring to prepare a solution A; adding the plasticizer and the processing modifier (acrylate (ACR)) into the solvent, stirring, adding the film-forming assistant, and stirring to prepare a solution B; and adding the solution A into the solution B, adding the essence and the pigment, and stirring to obtain the nanometer Ag antimicrobial. The nanometer Ag antimicrobial disclosed by the invention has the advantages of strong adhesion on objects, good film forming property, good friction resistance and long-lasting antibacterial effect; and the preparation method has the advantages of simpleness and strong operability.
Owner:宋信宇
Nano composite diatom ooze coating and preparation method thereof
The invention relates to a nano composite diatom ooze coating including a solvent and the following components with the total mass of 100%: 0.5-1.8% of cellulose, 5-18% of tourmaline, 5-15% of titanium dioxide, 4-18% of kaolin, 5-12% of a sepiolite powder, 35-55% of diatomite, 5-12% of a nano noble metal loaded type catalyst, 1-6% of nano activated carbon, 0.5-0.8% of a levelling agent, 1.5-5% of a thickener, 7-16% of a re-dispersible latex powder, and 0-5% of a pigment. The solvent is preferably water, and the amount of the water is 20-30%, preferably 25%, of the total mass of all the components. Nano noble metal particles are loaded on a carrier firstly and then mixed with other powders, so as to prevent an agglomeration effect of the nano noble metal particles. The prepared nano composite diatom ooze coating has extremely strong adsorption and ion exchange, can adsorb formaldehyde in air, and decomposes formaldehyde and other harmful gases under the action of the catalyst.
Owner:上海源由纳米科技有限公司
Water-based double-component anti-doodling paint
InactiveCN105176357AImprove water resistanceImprove aging resistanceAntifouling/underwater paintsPaints with biocidesWater basedAnti-graffiti coating
The invention relates to a water-based double-component anti-doodling paint which is a double-component paint composed of a component A and a component B. The component A comprises the following components in percentage by weight: 15-35 wt% of water-based hydroxy polyacrylate dispersion, 15-35 wt% of organosiloxane-modified water-based hydroxy polyacrylic resin, 5-15 wt% of ultraviolet-resistant filler, 0.1-0.6 wt% of defoaming agent, 0.5-1.5 wt% of leveling agent, 0.5-2 wt% of anti-aging agent, 0.5-1 wt% of wetting and dispersing agent and the balance of water, totaling 100 wt%. The component B comprises the following components in percentage by weight: 60-80 wt% of hydrophilic modified aliphatic polyisocyanate curing agent and the balance of solvent, totaling 100 wt%. The ultraviolet-resistant filler is selected from rutile titanium white. The anti-doodling paint provided by the invention has the advantages of favorable water resistance, excellent aging resistance, high medium and pollution resistance and obvious self-cleaning action.
Owner:AVIC BIAM NEW MATERIALS TECH ENG
Method for preparing nanometer iron-loaded amine-modified bio-char and application thereof
InactiveCN106179208AWide range of usesEasy wayOther chemical processesWater contaminantsOrganic chemistryAdsorption effect
The invention relates to the preparation and application of nano-iron-loaded amino-modified biological carbon. In this method, the biochar treated with deashing is used as the substrate, and its surface characteristics and reactivity are improved through amino modification; the nano-iron produced by the reaction is fully and uniformly loaded on the amino-modified bio-char, and the obtained nano-iron Amino-loaded modified biochar has stable properties, is not easy to agglomerate, and has a greatly increased adsorption capacity. Applying it to the degradation of heavy metal Cd can significantly reduce the problem of activity reduction caused by the agglomeration effect of nano-iron itself. The adsorption effect of biochar and the reduction effect of nano-iron are exerted, and the treatment effect is significantly enhanced.
Owner:SOUTH CHINA UNIV OF TECH
Controllable low-strength backfill material and preparation method thereof
ActiveCN113264731ACompliance with reductionIn line with resourceSolid waste managementSoil scienceSludge
The invention provides a controllable low-strength backfill material and a preparation method thereof. The controllable low-strength backfill material is prepared by adding fly ash, cement, water, a water reducing agent and a soil dispersing agent into a basic raw material and fully and uniformly mixing the mixture, wherein the basic raw material is a mixture of crushed engineering residue soil, mixing plant waste residues and sludge. The prepared controllable low-strength backfill material comprises the following components in parts by weight: 30-45 parts of engineering residue soil, 20-30 parts of mixing plant waste residues, 10-20 parts of sludge, 5-10 parts of fly ash, 5-20 parts of cement, 10-25 parts of water, 0.1-2 parts of a water reducing agent and 0.1-2 parts of a soil dispersing agent. Through the mode, the synergistic effect of all the raw materials can be fully utilized, the utilization rate of waste resources is effectively increased, meanwhile, the backfill material which is high in flow state, self-compacting and controllable in unconfined compressive strength is prepared, and the requirements of practical application are met.
Owner:WUHAN UNIV OF TECH
Preparation method for silicon carbon composite material for lithium ion battery negative electrode
ActiveCN102832376AEvenly distributedImprove cycle performanceCell electrodesCarbon compositesHigh energy
The invention discloses a preparation method for a silicon carbon composite material for a lithium ion battery negative electrode. The method comprises the following steps: primary ball milling: a step of adding a grinding aid into elementary silicon for ball milling; and secondary ball milling: a step of mixing silicon powder obtained after primary ball milling with carbon powder and adding a grinding aid for ball milling again. The mass content of the carbon powder is 20 to 80%. A discharge gas medium employed in the dielectric barrier discharge plasma assisted high-energy ball milling method is inert gas. According to the invention, silicon in the composite material prepared in the invention can be finely and uniformly distributed on a carbon matrix, effective refining of silicon can be carried out on the basis that the integrity of graphite sheets is ensured, reversible capacity of a battery is improved, the problems of volume expansion and poor conductivity of a silicon-based electrode are alleviated, and comprehensive performance of the lithium ion battery is improved.
Owner:SOUTH CHINA UNIV OF TECH
Method for detecting deafness genes based on surface enhanced Raman spectroscopy
InactiveCN104215626AUniform sizeGood reproducibilityRaman scatteringSurface-enhanced Raman spectroscopyMonocrystalline silicon
The invention discloses a method for detecting deafness genes based on the surface enhanced Raman spectroscopy. The method includes immersing a single crystal silicon wafer subjected to decontamination into hydrofluoric acid, forming a silicon-hydrogen bond on the surface of the wafer, adding nitric acid to acquire a silicon surface enhanced Raman scattering substrate, conducting covalence on hairpin DNA tail end sulfydryl and silver nanoparticles to form an Ag-S bond to enable the hairpin DNA to be in covalent connection onto a silicon wafer modified by the silver nanoparticles, after aging, adding the deafness causing gene sequence to be detected to conduct complete hybridization to conduct the surface enhanced Raman scattering (SERS) detection. According to the method, the SERS silicon substrate assited by the hairpin DNA to conduct detection of the deafness causing genes in the entity, the Raman detection sensitivity is effectively improved, the detection line is reduced, and the method has high specificity and good reproducibility, and is simple in operation, low in cost and easy to popularize and spread.
Owner:SUZHOU UNIV
Modified nanoscale zero-valent iron and preparation method and application thereof
ActiveCN106891017AEvenly dispersedGood dispersionTransportation and packagingMetal-working apparatusSulfateMetal
The invention discloses modified nanoscale zero-valent iron and a preparation method and application of the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron comprises rhamnolipid and nanoscale zero-valent iron. The surface of the nanoscale zero-valent iron is modified through the rhamnolipid, and the mass ratio of the rhamnolipid to the nanoscale zero-valent iron is 0.1-2:1. The preparation method comprises the steps that a rhamnolipid solution and a ferrous sulfate solution are mixed, and a NaHB4 solution is dropwise added for a reaction to obtain the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron has the advantages of being good in dispersing performance, good in stability, high in reaction activity, high in permeability and the like, has the good stabilization efficiency for metal lead in bottom mud, brings no secondary pollution to environment, has a good application value, and has the wide application prospect in the technical field of bottom mud heavy metal pollution treatment.
Owner:HUNAN UNIV
Method for preparing benzaldehyde catalyst prepared from heteropolyacid type benzyl alcohol
InactiveCN107899613AKeep aliveImprove featuresOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsBenzaldehydeCarbon deposit
The invention discloses a method for preparing a benzaldehyde catalyst prepared from heteropolyacid type benzyl alcohol. Nickel nitrate, a COF-1 nanometer material, citric acid, phosphotungstic acid,dioxane, mesitylene, glacial acetic acid, 2,4,6-tri(4-aminophenyl)-1,3-5 triazine and 2,5-dimethoxy-terephthalaldehyde are taken as main raw materials; the benzaldehyde catalyst prepared from heteropolyacid type benzyl alcohol (NH4)0.5H2.5PW12O40-NiO / COF-1 is prepared by adopting layered loading of nickel nitrate and phosphotungstic acid, nanometer heteropolyacid is sufficiently and uniformly laoded on a COF-1 porous carrier, the loading capacity is improved, nanometer active sites are prepared by adopting a liquid phase reduction method, immediate reaction and immediate loading are realized,the activity of nanometer particles is maintained, and an aggregation effect is avoided; and the catalyst prepared in the invention integrally has relatively high activity, selectivity and carbon deposit resistance, the stability of the catalyst is improved, the service life of the catalyst can be prolonged, the comprehensive reaction performance of the reaction system is improved, and the catalyst has higher product yield.
Owner:XUZHOU NORMAL UNIVERSITY
Preparation method and application of water-soluble titanium dioxide nanoparticles
ActiveCN107954470AUniform sizeGood dispersionMaterial nanotechnologyPhysical/chemical process catalystsSolution phase synthesisAtom-transfer radical-polymerization
The invention discloses a preparation method and application of water-soluble titanium dioxide nanoparticles. According to the preparation method, beta-cyclodextrin is used as an initial reaction material, a macroinitiator is synthesized by means of modification, a multi-arm star-shaped block copolymer is prepared by using an atom transfer radical polymerization (ATRP) technology and a technologywhich combines ATRP with 'click' chemistry, and the water-soluble titanium dioxide nanoparticles with uniform sizes and good dispersibility are prepared by taking the multi-arm star-shaped block copolymer as a monomolecular micelle template on the basis of a solution phase synthesis method. The titanium dioxide nanoparticles prepared by the preparation method are stable in quality, uniform in particle sizes, and can be stabilized at a nanoscale; the properties of the titanium dioxide nanoparticles can be effectively enabled to be exerted. The surfaces of the titanium dioxide nanoparticles aremodified, so that the titanium dioxide nanoparticles can be enabled to be evenly dispersed in water, and an aggregation effect is further avoided.
Owner:河南科斗新材料研究院有限公司
Application of zero-valent iron-loaded biochar in wastewater treatment
ActiveCN111573813AHigh reduction potentialEfficient degradationWater contaminantsWaste water treatment from metallurgical processZerovalent ironOrganic matter
The invention belongs to the technical field of environmental protection and industrial emission reduction and provides an application of zero-valent iron-loaded biochar in wastewater treatment. According to the application, zero-valent iron-loaded biochar is added into wastewater containing metal ions, wherein the wastewater is electroplating wastewater or a mixture of the electroplating wastewater and organic wastewater, the reduction potential of the metal ions is higher than that of zero-valent iron, the metal ions are reduced into elementary substances by the nano zero-valent iron, the elementary substances and elementary substance iron on the biochar form a multi-metal composite material, and organic matters are efficiently catalyzed to be degraded; and meanwhile, the electroplatingwastewater and the organic polluted wastewater are mutually diluted, so that the aim of treating wastes with wastes is fulfilled; the zero-valent iron loaded biochar has magnetism, can be convenientlyrecycled by an electromagnet, and still has good treatment capacity after being repeatedly used. The application of the zero-valent iron-loaded biochar in wastewater treatment achieves a good effectin wastewater treatment; and the material has magnetism and is easy to recycle, so that the zero-valent iron-loaded biochar has a good application prospect.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER
Remediation method of heavy metal contaminated soil
ActiveCN106984642AFast and accurate restorationLow costContaminated soil reclamationPollution soilRepair method
The invention discloses a remediation method of heavy metal contaminated soil. The method comprises the following steps: (1) excavating, breaking and screening the heavy metal contaminated soil; (2) conditioning the contaminated soil by using a solid conditioning agent; and (3) reducing heavy metals in the contaminated soil by using a liquid stabilizer. The remediation method of the heavy metal contaminated soil has the advantages of low cost, excellent effect, high efficiency and environment friendliness.
Owner:沃邦环保有限公司
Bottom blowing reduction device and reduction method using device
The invention provides a bottom blowing reduction device. The bottom blowing reduction device comprises a furnace body, a feed port, a discharge port, a reduction gas inlet and a reduction gas outlet;the furnace body is transversely arranged, and forms a certain included angle with the horizontal direction; in the length direction of the furnace body, a gas cavity and a material cavity are formedin the furnace body; the gas cavity and the material cavity are separated by a porous plate; the feed port is formed in one higher end of the furnace body; and the reduction gas inlet and the reduction gas outlet both communicate with the gas cavity. The invention further provides a method for bottom blowing reduction by using the device; and materials to be reduced are fed in the material cavityfrom the feed port, slowly move downwards along the inclined furnace body under coaction of the gravity and the reduction gas, and are finally reduced and output from the discharge port. The method has no need to use a push rod or a conveying belt for driving a boat container to move, so that the boat container and a conveying device are omitted.
Owner:孙院军 +2
Preparation method of water-soluble silver nanoparticles
The invention discloses a preparation method of water-soluble silver nanoparticles. Beta-cyclodextrin serves as an initial reaction raw material and is synthesized into a macroinitiator after being subjected to modification; a ATRP technology and a technology by combining the ATRP and click chemistry are adopted, so that a multiple-arm star-shaped block copolymer is prepared; and a solution phasesynthesis method serves as a basis, the multiple-arm star-shaped block copolymer serves as a single molecule micelle template, and the water-soluble silver nanoparticles with uniform size and good dispersion are prepared. According to the Ag nanoparticles prepared through the preparation method of the water-soluble silver nanoparticles, the quality is stable, the sizes of the particles are uniform, the particles can be stabilized in the nanometer grade, and exerting of properties of the Ag nanoparticles can be effectively ensured; and the surfaces of the Ag nanoparticles are modified so that the Ag nanoparticles can be uniformly dispersed in water to avoid the aggregation effect.
Owner:河南科斗新材料研究院有限公司
Remediation method of heavy metal contaminated bottom sludge
The invention discloses a remediation method of heavy metal contaminated bottom sludge. The remediation method includes the steps of firstly, moving out and dewatering the heavy metal contaminated bottom sludge; secondly, using a solid-phase conditioner to condition the contaminated bottom sludge; thirdly, using a liquid-state stabilizer to reduce heavy metal in the contaminated bottom sludge. The remediation method is low in cost, good in effect, high in efficiency, environmentally friendly, and the like.
Owner:沃邦环保有限公司
Gradient functional organic-inorganic hybrid membrane for advanced treatment of water, and preparation method thereof
ActiveCN109999677AIncrease water fluxHigh breaking strengthMembranesSemi-permeable membranesMagnetite NanoparticlesPolyethylene glycol
The invention provides a gradient functional organic-inorganic hybrid membrane for advanced treatment of water, and a preparation method thereof. The preparation method comprises the following steps:S1, preparing a membrane casting solution, wherein the membrane casting solution is prepared from, by mass, 70-80% of N-methylpyrrolidone, 0.01-5% of interfacial polymerization-modified magnetic nanoparticles, 5-8% of polyethylene glycol (400), 2-6% of polyethylene glycol (20000) and 10-20% of polyvinylidene fluoride; and S2, preparing the membrane: uniformly coating a stainless steel plate with the membrane casting solution under the action of an external magnetic field, pre-evaporating the solution, and shaping the pre-evaporated solution a coagulation bath to form the PVDF organic-inorganichybrid membrane with the nanoparticles distributed on the cross section of the membrane in a gradient manner. The preparation method significantly increases the water throughout, the fracture strength and the toughness of the hybrid membrane.
Owner:河南省驻马店水文水资源勘测局
Tin-based alloy negative electrode material of lithium ion battery and preparation method for tin-based alloy negative electrode material
ActiveCN106876688AInhibition of volume expansionAvoid reunion effectCell electrodesSecondary cellsLithium-ion batteryLithium electrode
The invention discloses a tin-based alloy negative electrode material of a lithium ion battery and a preparation method for the tin-based alloy negative electrode material. The tin-based alloy negative electrode material comprises metal tin, beryllium and copper, and has the chemical formula of (Be<x>Cu<y>)<6>Sn<5>, wherein in the formula, the metal beryllium and copper are calculated based on mass percentage; x / (x+y) is equal to 0.25-3.0%; and equivalently, beryllium accounts for 0.25-3.0% of the total mass of the beryllium and copper. The preparation method comprises the steps of performing complete ball milling and uniform mixing on the metal tin, beryllium and copper powder, or metal tin and beryllium-copper intermediate alloy powder under inert gas protection; and the uniformly mixed metal powder is subjected to smelting and quenching at a high temperature, and an alloy ingot obtained by quenching is subjected to aging strengthening heat treatment. Therefore, high strength and toughness are realized, and the high-conductivity beryllium-copper alloy is dispersed around the active element tin to play an effect of buffering volume change in the circulation. The tin-based alloy negative electrode material prepared by the invention is relatively high in capacity, the cycling performance is effectively improved, and the preparation method is simple and suitable for industrial production.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Method for preparing para-xylene catalyst by amino-modified methanol
ActiveCN107913731AImprove surface propertiesImprove stabilityOrganic-compounds/hydrides/coordination-complexes catalystsCatalystsAcetic acidAlkyl transfer
The invention discloses a method for preparing a para-xylene catalyst by amino-modified methanol. The method adopts dioxane, mesitylene, glacial acetic acid, COF-1 nano material, FeSO4.7H2O and KBH4 as main raw materials. The method disclosed by the invention has the beneficial effects that unique processes and technical parameters are adopted, loads are generated by thermal expansion, amino modification and nano-iron reaction, and by thermal-expansion treatment, the surface adhesiveness of COF-1 is improved, and basis is provided for the following amino modification; by amino modification, the surface property is improved and the benefit for fully and uniformly loading the nano-iron generated in reaction onto porous carriers is achieved; by alkylation reaction of methanol, para-xylene isobtained, so that the steps of isomerization and the like in the traditional process are omitted, the process route is shortened and the once-through yield of the para-xylene is greatly increased.
Owner:XUZHOU NORMAL UNIVERSITY
Passivating agent for reducing activity of heavy metals in livestock and poultry excrement and application of passivating agent
ActiveCN106986669ALow costImprove abilitiesBio-organic fraction processingExcrement fertilisersRhamnolipidFeces
The invention discloses a passivating agent for reducing activity of heavy metals in livestock and poultry excrement and application of the passivating agent. The passivating agent for reducing activity of the heavy metals in the livestock and poultry excrement is made by mixing of a solid-state conditioner and a liquid-state stabilizer; the solid-state conditioner is prepared from, by weight, 40-55 parts of coal ash, 20-35 parts of ardealite and 15-30 parts of red mud; the liquid-state stabilizer is rhamnolipid dispersed zero-valence nano iron suspension. The passivating agent for reducing activity of the heavy metals in the livestock and poultry excrement has advantages of low cost, effectiveness, high efficiency, environmental friendliness and the like.
Owner:沃邦环保有限公司
Hydrophilic stony cultural relic nano protective agent and preparation method thereof
ActiveCN107987564AIncreased persistenceEvenly dispersedAntifouling/underwater paintsPaints with biocidesWater basedForeign matter
The invention discloses a hydrophilic stony cultural relic nano protective agent and a preparation method thereof. The hydrophilic stony cultural relic nano protective agent is prepared from the following raw materials: nanosilicon dioxide, nano silver, propylene glycol, a fluorine surfactant, a water-based wetting agent, a water-based dispersing agent, a water-based defoaming agent, a preservative and water. The hydrophilic stony cultural relic nano protective agent can be bonded with a porous surface of a stony material, and a firm, durable, transparent, waterproof and oil-proof protective film is formed inside the surface of the stony material and is taken as a water-based permeable sealant for the porous surface of a cultural relic made from the stony material. The protective agent disclosed by the invention has excellent waterproof, antifouling and oil-proof properties, can effectively prevent the surface of the stony material from being polluted by foreign matters, and the surface can be cleaned easily; the protective agent has good air permeability, and steam is permeable; the protective agent has good weather resistance and uvioresistant function and can effectively preventthe surface of cultural relics such as the stony material and pottery from being weathered; and a coating is transparent, and appearance characteristics of the surface of the stony material are not changed.
Owner:河南科斗新材料研究院有限公司
Silicon monoxide-based negative electrode material with high reversible capacity, preparation and application thereof
ActiveCN112635730AIncreased diffusion rateReduce adverse effectsMaterial nanotechnologyCell electrodesSilicon monoxideElectrical battery
The invention belongs to the technical field of lithium ion batteries, and discloses a silicon monoxide-based negative electrode material with high reversible capacity, preparation and application thereof. The silicon monoxide-based negative electrode material is mainly prepared from raw materials in a ball milling manner. When the raw materials are silicon monoxide, tin powder and cobalt powder, the silicon monoxide accounts for 30-70% of the total mass of the raw materials, the Sn powder accounts for 10-50% of the total mass of the raw materials, and the Co powder accounts for 5-25% of the total mass of the raw materials; when the raw materials are silicon monoxide, tin powder, cobalt powder and a carbon material, the silicon monoxide accounts for 40-70% of the total mass of the raw materials, the tin powder accounts for 10%-30% of the total mass of the raw materials, the cobalt powder accounts for 5%-15% of the total mass of the raw materials, and the carbon material accounts for 5-30% of the total mass of the raw materials. The invention also discloses a preparation method of the silicon monoxide-based negative electrode material. The negative electrode material disclosed by the invention has high reversible capacity, relatively good initial coulombic efficiency and excellent cycling stability. The negative electrode material is used for preparing a lithium ion battery.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of BiPO4 nano photocatalyst
InactiveCN110075884AGood monodispersityImprove featuresCatalyst activation/preparationDispersityAlcohol
The invention discloses a preparation method of a BiPO4 nano photocatalyst and belongs to the technical field of preparation of inorganic nano photocatalysis materials. The preparation method of the BiPO4 nano photocatalyst comprises steps as follows: bismuth salt and sodium phosphate are added to deionized water and stirred to obtain a first mixed solution; the pH value of the first mixed solution is adjusted to 1-6, and a second mixed solution is obtained; an AEC (alcohol ether carboxylate) water solution is added to the second mixed solution, and a precursor bismuth phosphate suspension isobtained; the precursor bismuth phosphate suspension is put in a hydrothermal reactor for a reaction, after the reaction is completed, and the BiPO4 nano photocatalyst is obtained. By means of the preparation method of the BiPO4 nano photocatalyst, obtained BiPO4 nanoparticles have good particle dispersity and interface characteristics, and the photochemical property of the BiPO4 nano photocatalyst is improved.
Owner:JIANGHAN UNIVERSITY
Refractory thermal insulation material and preparing method thereof
ActiveCN110272261AAvoid reunion effectPromotes even distributionCeramicwareClaywaresThermal insulationFire retardant
The invention relates to a refractory thermal insulation material and a preparing method thereof. The refractory thermal insulation material is prepared from, by weight, 10-16 parts of fruit shell powder, 10-15 parts of feldspar, 50-60 parts of shale, 10-13 parts of sandstone, 1-3 parts of limestone, 5-8 parts of magnesite, 5-7 parts of modified nano silica and a proper amount of water through high-temperature foaming after water is added for mixing. The surface of the refractory thermal insulation material is coated with a flame retardant. The prepared refractory thermal insulation material has good mechanical performance and refractory performance, is low in manufacturing cost and low in environmental pollution and belongs to environment-friendly materials.
Owner:河北智博保温材料制造有限公司
Carbon-coated MnOx nano energy storage material with one-dimensional core-shell structure and preparation method thereof
Owner:FUZHOU UNIV
Phosphor powder material for LED lighting and preparation method thereof
ActiveCN108485657BReduce usageIncrease composition contentLuminescent compositionsNitrogen oxidesPhysical chemistry
The invention relates to a fluorescent powder material for light-emitting diode (LED) lighting and a preparation method thereof. A two-stage burning synthesis new technology is adopted for nitride andnitric oxide fluorescent powder for LED, so that two types of high-quality raw material powder, i.e., Si3N4 and AlN are prepared, and the nitride and nitric oxide fluorescent powder is further prepared. According to the fluorescent powder material for LED lighting and the preparation method provided by the invention, the influence rule of formula and process parameters on ingredients, structuresand performance of the prepared raw material powder and the fluorescent powder is systematically researched, and on the basis, through the process optimization, the Si3N4 and AlN raw material powder with low oxygen content and high activity, and the nitride and nitric oxide fluorescent powder with a complete crystal form and excellent light-emitting performance are prepared.
Owner:SHANDONG YICHANG LIGHTING TECH
Process for slowing down settlement of nano-suspension and product and application of nano-suspension
ActiveCN107774238AEffective dispersionWeaken the interaction forceTobacco smoke filtersAlkali metal oxides/hydroxidesProcess engineeringUltrasonic dispersion
The invention provides a process for slowing down settlement of a nano-suspension and a product and application of the nano-suspension. The process for slowing down settlement of the nano-suspension comprises the following steps: (1) adding a nano-adsorption granular material and a nano-material dispersant mixed solution to glycerol triacetate and stirring; (2) transferring to a high-speed stirrerand stirring; (3) transferring to an ultrasonic dispersion instrument to be ultrasonically dispersed. The traditional production process is optimized by using the process disclosed by the invention,so that the settlement rate of the prepared nano-suspension for a cigarette filter rod is greatly lowered, thereby being conducive to reducing the harmful degree of cigarettes.
Owner:SHANGHAI TOBACCO GRP CO LTD +1
Preparation method of four-arm anti-permeability compacting agent
ActiveCN113200705AImprove compactnessReduce shrinkage cracksGroup 4/14 element organic compoundsCapillary TubingStructural engineering
The invention belongs to the technical field of building concrete admixtures, and particularly relates to a preparation method of a four-arm anti-permeability compacting agent. The prepared anti-permeability compacting agent is introduced in the concrete stirring process to improve the workability of concrete, improve the slump, increase the early strength of the concrete and increase the anti-permeability compactness of the concrete, the concrete strength can be increased at a low temperature, the freeze-thaw resistance of the concrete is also enhanced, in the concrete processing and using process, an anti-permeability compacting agent which takes a four-arm anti-permeability agent prepared from a silicon dioxide alkali liquor slow release and a silane coupling agent as a main raw material is adopted, capillary pores capable of filling the concrete are introduced, therefore, the hardening of the concrete is accelerated, and the anti-permeability compacting is achieved.
Owner:安徽润砼建材科技有限公司
Preparation method of oil soluble titanium dioxide nanometer particles and application thereof
ActiveCN107935035AUniform sizeGood dispersionNanotechnologyTitanium dioxideDispersityClick chemistry
The invention discloses a preparation method of oil soluble titanium dioxide nanometer particles. According to the method, beta-cyclodextrin is taken as a primary reaction material and is synthesizedinto a macroinitiator through modification; multi-arm star block copolymer is formed through a technology of combination of ATRP and click chemistry; the oil soluble titanium dioxide nanometer particles with uniform sizes and excellent dispersity, based on a solution phase synthesis method and taking the multi-arm star block copolymer as a unimolecular micelle template, are formed. The surfaces ofthe TiO2 nanometer particles are modified, the TiO2 nanometer particles can be uniformly dispersed in an oily solvent, and the occurrence of aggregation effect can be avoided. The formed nanometer particles are stable in quality, the particle sizes are uniform and can be stabilized in nanoscale, and that performance of the TiO2 nanometer particles is realized can be effectively guaranteed.
Owner:河南科斗新材料研究院有限公司
Method for preparing semiconductor nanocrystals by liquid phase ablation of femtosecond laser microchannel
ActiveCN107140607BAvoid Amorphous DecompositionAvoid reunion effectNanotechnologyMetal selenides/telluridesLiquid productSemiconductor nanocrystals
Owner:SICHUAN UNIV
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