103results about How to "Reduce reunion" patented technology

The present invention discloses a method of dispersing cyclodextrins into a base polymer. The method of the invention comprises reacting grafted microfine polymer powder with a cyclodextrin to form a cyclodextrin-attached grafted polymer, and mixing the cyclodextrin-attached grafted polymer and the base polymer for a sufficient time that the cyclodextrin-attached grafted polymer is dispersed within the base polymer. The present invention also provides several cyclodextrin-inclusion complex products formed by the method of the invention. This products include an antimicrobial polymer blend, a fragrant polymer blend, and a dyed polymer blend.

Methods and devices relating to polymer-bioceramic composite implantable medical devices are disclosed.

The invention relates to a preparation method of lithium titanium negative electrode composite material for lithium ion battery. In the invention, Li soluble compound and Ti soluble compound are taken as lithium source and titanium source, high polymer compound is added, reaction is carried out by sol-gel method, sintering atmosphere is controlled, and sintering is carried out to obtain the composite material. The method not only can prepare nano crystalline with favourable dispersity and can prepare pyrolytic carbon evenly distributed at the periphery or on the surface of granules and obviously improves conductivity of product. The lithium titanium negative electrode material prepared by the method shows excellent multiplying power performance and is applicable to power battery.

The invention relates to a method for preparing nanometer flaky yttrium oxide powder. The method is characterized by comprising the following steps of: preparing a yttrium-containing inorganic acid salt solution, regulating the solubility of yttrium-containing inorganic acid salt to be 0.1 to 0.5 mol/L, regulating the PH value by using alkaline liquor until the solution is white colloidal suspension, transferring the suspension to a hydro-thermal reaction kettle, and performing hydro-thermal treatment at the temperature of between 80 and 200 DEG C for 24 to 48 hours; after cooling to room temperature, performing centrifugal separation to obtain a precursor; washing the precursor for 4 to 6 times by using deionized water, and washing for 3 to 5 times by using alcohol to remove residual acid radical ion impurities fully; and drying at the room temperature, and calcining at the temperature of between 600 and 800 DEG C for 3 to 6 hours to obtain the nanometer flaky yttrium oxide powder. The flaky yttrium oxide powder prepared by the method is high in dispersity, the grain diameter ranges from 100 to 300 nanometers, the flaky thickness ranges from 10 to 20 nanometers, and a ratio of the diameters of crystal grains to the flaky thickness is (10-30):1. The prepared nanometer flaky yttrium oxide powder can be used as a template material for texturing ceramics and a ceramic additive, and also can be used for preparing high-temperature resistant and corrosion resistant structural materials. The method is simple, and low in cost, and reaction temperature and reaction pressure is low; and granules are flaky, have the nanometer-scale grain diameters and a good dispersing effect and are distributed uniformly and high in purity, so the method is suitable for industrial production.

The invention discloses a compound grapheme absorption agent which comprises grapheme, nanometer zero-valent iron and cetyl trimethyl ammonium bromide. The invention further discloses a method for preparing the compound grapheme absorption agent. The method for preparing the compound grapheme absorption agent includes the following steps that firstly, oxidized grapheme is dispersed in water with ultrasonic waves and oxidized grapheme suspension liquid is obtained; secondly, the nanometer zero-valent iron and the cetyl trimethyl ammonium bromide are added into the oxidized grapheme suspension liquid obtained in the first step, fully stirred and fully reacted and a reaction solution is obtained; thirdly, the reaction solution obtained in the second step is added with reductive agents and fully reacted and black flocks are obtained; fourthly, the black flocks obtained in the third step are filtered, washed and dried to obtain the compound grapheme absorption agent. The compound grapheme absorption agent is efficient, green, economic, friendly to environment, and suitable for large-scale production. The preparing method is simple and conditions are easy to control.

The invention discloses a waterborne epoxy anticorrosive coating containing graphene and a preparing method and application thereof. The waterborne epoxy anticorrosive coating is prepared from, by weight, 5-30 parts of 1% oxidized graphene aqueous solution, 5-30 parts of ethyl alcohol, 0.01-0.04 part of hydrazine hydrate, 8-10 parts of silicon sources, 30-50 parts of filler, 33-35 parts of deionized water, 0.5-1 part of flash-rust resistance agent, 1-2 part of waterborne auxiliary, and 10-40 parts of waterborne epoxy hardener. The preparing method specifically comprises the following steps of S1, preparing graphene modified by silicon dioxide; S2, preparing waterborne epoxy emulsion modified by graphene; S3, preparing waterborne epoxy anticorrosive coating containing graphene. According to the waterborne epoxy anticorrosive coating containing graphene and the preparing method and application thereof, the compatibility of the waterborne epoxy anticorrosive coating in epoxy resin is improved, prepared graphene modified by silicon dioxide has the properties of an emulgator, and the epoxy emulsion can be emulsified and stabilized.

The invention discloses a preparation method and application of a modified graphene oxide/chitosan composite material. The modified graphene oxide/chitosan composite material is prepared from the following components of graphene oxide, chitosan and disodium edentate. The preparation method comprises the steps of adding the water-soluble disodium edentate in graphene oxide suspension liquid which is obtained after carrying out ultrasonic treatment in a stirring way, and uniformly mixing the mixture; then adding a chitosan solution which is dissolved in glacial acetic acid in the stirring way; carrying out suction filtration, centrifugation, vacuum drying and grinding/sieving after carrying out ultrasonic stirring for a certain time, thus obtaining the modified graphene oxide/chitosan composite material. The modified graphene oxide/chitosan composite material prepared by the method can be used as an adsorbent to be used in the field of water pollution control and to be particularly used for adsorbing and removing heavy metal pollutants in wastewater, and has the advantages that the preparation method is simple, the adsorption speed is fast, the regeneration performance is good, and the like; the sources of needed raw materials are wide, the cost is low, and the actual application value is high.

The invention discloses a high-transparent ultraviolet separation ceramic-imitating flexible nanometer composite membrane material and a preparation method thereof and belongs to the field of nanometer composite materials. The composite membrane material comprises 20-85 wt% of core-shell nanometer particles and 15-80 wt% of polymer macromolecules. The composite membrane material is prepared through in situ polymerization which includes two steps of phase transfer of nanometer particles and bulk polymerization of the nanometer grains in polymer monomer. The nanometer grains are transferred to the polymer monomer from initial dispersoid through a method of solution phase transfer, and then the high-transparent ultraviolet separation ceramic-imitating flexible nanometer composite membrane material is prepared through thermal initiation polymerization or ultraviolet light initiation polymerization. The nanometer composite membrane material is high in transparency, has good thermal stability, strong ultraviolet shielding capacity and certain flexibility, can be used for manufacturing transparent optical devices, uvioresistant devices, special light control devices and the like.

The invention relates to a method for producing a functional nylon-6 slice. The method comprises the following steps of: (a) dispersing functional powder in liquid caprolactam to form a functional powder dispersion liquid; (b) metering the functional powder dispersion liquid by using a liquid pump and conveying the dispersion liquid to an extruder; (c) metering a product polymerized with a conventional hydrolysis and ring-opening polymerization method by using a melt pump and conveying the product to the extruder; (d) extruding and granulating after the functional powder dispersion liquid of the step (b) and the polymerized product of the step (c) are mixed by the extruder; and (e) extracting and drying granules to prepare a product. Compared with a traditional mode, the invention has the advantages of flexible production variety switching, less production change consumption, fine granularity and good dispersity of the functional powder in the chip product, low degradation of nylon molecule and stable quality.

A method for preparing amphiphilic nano silicon dioxide with good dispersity has main technical characteristics that a sodium silicate water solution with silicon dioxide weight content being 25-30% is heated to 50-60 DEG C, a titanic acid ester coupling agent is added, and stirring is performed evenly at a constant temperature; then dilute hydrochloric acid is slowly added at an even speed until the pH value reaches 8-9, and stirring is performed for 1 h; the temperature is risen to 70-80 DEG C, the titanic acid ester coupling agent is added according to 50% of the first adding amount, stirring is performed for 30 minutes, dilute hydrochloric acid is slowly added at an even speed again until the pH value of the reaction system reaches 6-7, the temperature is kept, and stirring is performed for 1 h; and the amphiphilic nano silicon dioxide powder with good dispersity can be obtained after the reaction solution is filtered, washed, heated and dried. The product has good amphiphilic performance, so as to be well compatible with organic matters in the added system, and have good hydrophilicity. The product only needs common dispersing or grinding equipment to disperse well in the nano state in the added system.

The invention relates to the technical field of paint preparation, and in particular relates to a preparation method of low surface energy type hydrophobic marine antifouling paint. Nano-titanium dioxide and nano-silica are jointly modified by a silane coupling agent, the agglomeration of the nano-titanium dioxide is reduced, the dispersion and the stability in the acrylic resin are facilitated, and by the addition of the modified nano-titanium dioxide, the hydrophobicity of the acrylic resin is improved, so that the fouling organisms are not easily adhered to the surface of the acrylic resin,or not tightly adhered to the surface of the acrylic resin, and the surface energy of the marine antifouling paint can be reduced. Si-O bonds are introduced into the resin, an added micron-sized pigment filler and the nano silica are mixed to facilitate improvement of the hydrophobicity of the resin, and chitosan, rosin, and cuprous oxide are continuously added to promote the adhesion of the resin to the modified nano-substances or other filler, thereby further reducing the surface energy of the marine antifouling paint. The low surface energy type hydrophobic marine antifouling paint has a wide range of application.

The invention belongs to the field of chemical and provides a preparation method of a graphene/zinc-aluminium oxide composite material and application of the composite material in a super capacitor. The preparation method comprises the steps of: dissolving a graphite oxide precursor, a zinc salt precursor and an aluminium salt precursor in an organic solvent, adding a small amount of deionized water, and ultrasonically dispersing the mixture to be uniform; transferring a mixed solution to a microwave reactor and then slowly dropwise adding an alkali source compound; and washing a product with alcohol for multiple times, then drying the product in vacuum, putting the product in a tubular furnace, introducing Ar/H2 mixed gas, and carrying out high-temperature thermal pyrolysis, thereby obtaining the finished product, namely the graphene/zinc-aluminium oxide composite material. No toxic chemical agent is used in the reduction of graphene, so that harm to human bodies and environment pollution, caused by a great quantity of harmful chemical agents such as hydrazine hydrate serving as a strong reducing agent used in a chemical reduction method, are eliminated fundamentally.

The invention provides a preparation method of a polyvinylidene fluoride composite material with high piezoelectricity, and relates to a preparation technology of piezoelectric flexible materials. Thepolyvinylidene fluoride composite material is a composite fiber membrane prepared by means of an electrospinning method using polyvinylidene fluoride as a matrix and a core-shell structure formed bynano-barium titanate and carbon nanotubes as a reinforcement. The preparation method aims at solving the problems of uneven mixing of two kinds of reinforcements doped in an existing polyvinylidene fluoride piezoelectric fiber membrane, self agglomeration of the two reinforcements or low content of the beta crystal phase in the fiber membrane, and poor piezoelectric performance. The CNT@BaTiO3 (core/shell) particles prepared by adopting a chemical method can be uniformly dispersed in a polymer, and the prepared composite fiber membrane has good flexibility and mechanical properties. The crystallinity is 55%-80%, the content of the beta crystal phase is 60%-91%, the piezoelectric constant D33 is 35-50 pC/N, and the composite fiber membrane can be applied to devices such as piezoelectric sensors, piezoelectric nanogenerators and the like.

Disclosed is a morphology controllable nanometer CeO2 preparation method. Hexahydrate cerous nitrate and a citric acid are mixed to obtain a mixture, the mixture is stirred in a magnetic force heating stirrer, the potential of hydrogen (pH) of the mixture is adjusted to 2.0 to 2.5 by aqueous ammonia, the mixture is placed in water bath to be reacted and dried in an air-blowing drying oven, then the dried mixture is placed in a muffle furnace to be calcined at different temperatures from 200 DEG C to 700 DEG C to obtain a product, and the calcined product is ground in a agate mortar to obtain a faint yellow CeO2 powder. According to the method, grain growth kinetics and sol-gel method principles are utilized, the different calcination temperatures are controlled in the process of forming the material, so that the material can be synthesized at low temperature, the energy is saved, the agglomeration during material synthesizing is reduced, the production process is simplified, and the average particle diameter of the formed nanometer oxide ceric oxide particle is smaller with the increasing of the calcination temperature.

The invention relates to a tumor-targeted hollow core-shell structure nano diagnosis-treatment agent and a preparation method thereof. The nano diagnosis-treatment agent comprises an upconversion nanoparticle inner core, an organic-inorganic hybrid silica shell layer and an intermediate cavity structure, can improve the load capacity of a photosensitizer and reduce the photosensitizer aggregation, and can specifically recognize cancer cells by connecting tumor-targeted molecules (such as urokinase ammonia terminal fragments) to the surface; under the irradiation of 980 nm laser, a visible light emission sensitizing photosensitizer of the nano diagnosis-treatment agent generates singlet oxygen, so that the photodynamic therapy of cancer cells can be performed; in addition, the nano diagnosis-treatment agent can be used for the upconversion luminescence and CT dual-mode imaging by utilizing the upconversion luminescence and strong X-ray absorption characteristics.

The invention provides a preparation method of high-dispersion superfine aluminium hydroxide. Superfine aluminium hydroxide is finally obtained by adding seed crystals and dispersion modifier at the same time at a certain reaction temperature with a sodium metaaluminate solution as the raw material, conducting stirring for a certain period of time, and conducting solid-liquid separation, washing, drying and dispersing on obtained pulp, wherein D50 is equal to 0.8-2 micrometers, and D100 is smaller than 10 micrometers. By means of the method, agglomeration of superfine aluminium hydroxide powder is effectively reduced, aggregate in finished products is reduced, the processing performance of high-dispersion superfine aluminium hydroxide is effectively improved, and the high-dispersion superfine aluminium hydroxide can be used for inflaming retarding or filling of wires, cables, rubber, plastic, papermaking, electric insulation and the like.

The invention discloses a method for the in-situ growth of calcium silicate hydrate on the surface of a mineral admixture. The method comprises the following steps: (1) performing alkali erosion: preparing an aqueous solution of a silicon source, adding the mineral admixture to the aqueous solution, and stirring the mineral admixture and the aqueous solution for a period of time to obtain a mineral admixture slurry; and (2) performing a chemical co-precipitation reaction: dropwise adding a calcium source to the mineral admixture slurry obtained in step (1), stirring the calcium source and themineral admixture slurry for a period of time, and then performing suction filtration, washing and drying on the obtained slurry to obtain calcium silicate hydrate in situ grown on the surface of themineral admixture. The method improves the dispersion uniformity of the calcium silicate hydrate, reduces the particle size of the calcium silicate hydrate and improves the early activity of the mineral admixture. The calcium silicate hydrate in situ grown on the surface of the mineral admixture, prepared by the method, can significantly improve the early strength of a cement-based material and greatly improve the later performances of the cement-based material, and also can realize the large-admixing amount application of the mineral admixture by improving the admixing amount of the mineral admixture.

The invention provides an electroluminescent device, which includes an anode, a hole transport layer, a light emitting layer, an electron transfer layer and a cathode which are arranged in sequence. The light emitting layer includes surface-modified carbon nanotubes and quantum dots uniformly dispersed around the carbon nanotubes. The length of the carbon nanotubes is at least half the thickness of the light emitting layer. According to the invention, the light emitting efficiency of the electroluminescent device can be effectively improved and the service life is further increased. The invention also provides a display device and a lighting device.

The invention discloses a preparation method and application of a tetracycline-polluted water body restoring material. A preparation method of nanometer cerium dioxide comprises the following steps of (1) adding cerium nitrate and surfactant into water, mixing and stirring, so as to obtain a mixed solution A; (2) adding an ammonia carbonate solution into the mixed solution A, and stirring, so as to obtain a mixed solution B; (3) filtering the mixed solution B, washing and drying the obtained precipitate, calcining, and grinding into powder, so as to obtain the nanometer cerium dioxide. The invention also discloses a preparation method of the nanometer FeO@CeO2 (ferrous oxide@cerium dioxide) by using the nanometer cerium dioxide, and a restoration method of the tetracycline-polluted water body by using the nanometer FeO@CeO2. A heterogeneous Feton technique using the FeO@CeO2 as a catalyst is proposed to prepare the FeO@CeO2 to be applied into the restoring of the tetracycline pollution in the water body, so that the reaction activity is improved, the mineralizing degree of the tetracycline is improved, and the risk of secondary pollution is reduced.

The invention discloses a method for preparing a Ni-P-CNT (Carbon nanotube) nano composite coating. The method comprises the following steps of: performing acid oxidation treatment on a carbon nano-tube (CNT) before coating, utilizing an ultrasonic dispersion technology and adding a proper amount of surfactant into a chemical plating solution, so that the CNT is uniformly dispersed in the chemical plating solution. A proper chemical plating solution formula is selected, a proper amount of surfactant is added, the coating solution is not decomposed and precipitated in the chemical plating process through an intermittent magnetic stirring method, the chemical and physical characteristics are stable and reliable, the nano composite coating which is high in hardness, wear resistance and corrosion resistance is prepared compared with the traditional Ni-P coating, and the problem that the CNT is dispersed is solved.

The invention discloses a preparation method of alumina. The method is as below: merging an aluminum salt solution and a precipitating agent, and adding the mixture into a water solution containing polyethylene glycol to conduct a co-precipitation reaction; aging, filtering and drying the obtained pseudo-boehmite dry glue; and roasting the pseudo-boehmite dry glue to obtain gamma-Al2O3 powder. The method has the advantages of simple process and low production cost; the prepared alumina has regular layered structure, less aggregation of powder particles, large pore volume, large aperture, high specific surface area and little pollution to environment, and is easy for realization of industrialized production.

The invention relates to a polylactic acid-polyethylene glycol block copolymer (PLA-PEG-PLA)-based magnetic microsphere preparation method. Magnetic microspheres are prepared by adopting ferriferrous oxide (Fe3O4) as a core material and the PLA-PEG-PLA as a wall material through an emulsion solvent evaporation process. The preparation method comprises the following steps: modifying Fe3O4; dissolving the PLA-PEG-PLA in an organic solvent, adding modified Fe3O4, carrying out ultrasonic dispersion to obtain an oil phase, dissolving polyvinyl alcohol in deionized water to obtain a water phase, mixing the water phase with the oil phase, and carrying out emulsion dispersion by using a high speed dispersion homogenizer to obtain an oil-in-water O/W emulsion; and transferring the O/W emulsion to a beaker, carrying out low speed stirring until the organic solvent completely volatilizes, centrifuging, washing, carrying out pumping filtration, and carrying out vacuum drying. The preparation process is simple; and the prepared magnetic microspheres have the particle sizes of 6-8mum, and has the advantages of structured surface morphology, high entrapment rate and good magnetic responsibility; and the prepared magnetic microspheres can be used as a target administration carrier.

The invention provides a preparation method of a bismuth sulfide/titanium dioxide/graphene compound with high-catalysis degradation activity under visible light and belongs to the technical field of preparation of photocatalysts. According to the preparation method, tetrabutyl titanate and graphene oxide are used as raw materials, and bismuth nitrate pentahydrate and sodium sulfide nonahydrate are used as bismuth sulfide raw materials; the raw materials are subjected to solvent thermal and calcination treatment; finally, the bismuth sulfide/titanium dioxide/graphene compound is obtained. According to the synthesized bismuth sulfide/titanium dioxide/graphene compound, an adsorption capability on organic pollutants is enhanced, and the compound has a relatively high absorption capability on the visible light; the service life of an electron-hole pair can be prolonged; the catalysis degradation capability on the organic pollutants is enhanced and the degradation rate is 2.93 times as much as that of TiO2 nanoparticles and is 1.42 times as much as that of bismuth sulfide/TiO2, so that the bismuth sulfide/titanium dioxide/graphene compound has a relatively high actual application value.

The invention discloses a preparation method of highly dispersed nanoflake magnesium hydroxide. The method comprises the steps: with magnesium oxide obtained through high-temperature calcination as a magnesium source, mixing the magnesium source with an alkaline solution; and with potassium oxalate as a dispersant, reacting for a while, and then carrying out water washing, drying and crushing to obtain the highly dispersed nanoflake magnesium hydroxide of which the particle size is 300 nm. The method disclosed by the invention is simple to operate; the prepared magnesium hydroxide is good in dispersibility, low in aggregation, even in particle size, regular in crystal form, low in requirements on equipment, low in cost and environment-friendly without pollution.

The invention relates to a fuel-cell catalyst and a preparation method thereof, in particular to a fuel-cell catalyst using a complex carbon material as a carrier and a preparation method thereof. The catalyst is expressed as Pt/(C1+C2), and the carbon carrier is a mixture of a granular carbon material (C1) and a linear carbon material (C2). By using the mixture of the granular carbon material (C1) and the linear carbon material (C2) as the carbon basis materials, the invention prepares the Pt/(C1+C2) catalyst from the two basis materials by an in-situ chemical reduction method. The granular carbon material comprises carbon black, carbon microspheres or mesoporous carbon. The linear carbon material comprises carbon fibers or carbon nano tubes. The combination of the linear carbon material and the granular carbon material forms a three-dimensional complex network structure, thereby enlarging the three-phase reaction active region of the catalyst and improving the utilization ratio of platinum.

The invention discloses poly(2-aminothiazole)/graphene-epoxy composite paint, and a preparation method and applications thereof. The composite paint includes a poly(2-aminothiazole) modified graphenefilling material, epoxy resin and an organic solvent. A composite epoxy resin coating formed by the composite paint has excellent anti-corrosion and anti-attrition performance, can be applied to the surface treatment of metal materials, and has wide application prospects.

The invention belongs to the technical field of chemical fiber processing, and particularly relates to a preparation method of antibacterial polyester fiber. The preparation method comprises the following steps: (1), performing coating treatment to silver powder, wherein the used silver powder has the particle size of 1-15 microns; (2), performing drying treatment: drying polyester chips by a vacuum drying oven so as to enable the water content of the polyester chips to be 110ppm, wherein the drying temperature is set to be 100 DEG C; (3), preparing antibacterial functional particles to obtainpolyester particles doped with the silver powder; (4), spinning; (5), performing posttreatment: drafting, winding and doffing prepared filaments. Through coating treatment to the used silver powder,agglomeration of the silver powder is reduced, so that the antibacterial effect of the produced polyester fiber is better and the silver powder in the polyester fiber is unlikely to shed off.

The invention discloses a method for manufacturing a dry-pressing heterosexual permanent-magnetic material, and belongs to the technical field of a permanent-magnetic material. The method comprises the following steps: crushing a pre-sintering material into crude powder, adding a quadratic formula formed by silicon dioxide and a boric acid to the crude powder and then carrying out ball-milling; scattering the slurry obtained in a ball-milling manner after baking; adding 0.1-3.0% of calcium carbonate according to the weight percent and then agitating and vibration and milling by a blender mixer to obtain mixed powder; adding allocated quantity of camphor powder and calcium stearate to the mixed powder, and then crushing at a high speed, so as to prepare the dry-pressing magnetic powder. Even dispersion can be ensured by adding the calcium carbonate after drying of fine powder is finished, and adhesion of particles is not generated. Therefore, the pressing density of a magnetic body and the control range of the drying temperature range can be improved, and meanwhile, birdnesting is opened as much as possible by a vibration and milling process. Thus, birdnesting between particles is reduced, meanwhile, a corner angle is removed, the prepared permanent-magnetic material has good orientation degree and density, and the performance is significantly improved.

The invention discloses a bacterial cellulose film/nano-iron composite material and a preparation method thereof. The preparation method of the bacterial cellulose film/nano-iron composite material comprises the following steps of: (1) putting bacterial cellulose film in an alkaline solution for activation to obtain activated bacterial cellulose film; (2) performing extraction on the activated bacterial cellulose film by using a polar-alcohol aqueous solution so as to remove free water/bound water on the surface and interior of the film and therefore obtain semi-dehydrated activated bacterialcellulose film; and (3) putting the semi-dehydrated activated bacterial cellulose film in a ferrous ion solution, and performing in-situ reduction on ferrous ions under the action of sodium borohydride to obtain the bacterial cellulose film/nano-iron composite material. According to the bacterial cellulose film/nano-iron composite material and the preparation method thereof, an activation in-situchemical precipitation method is adopted to prepare the bacterial cellulose film loaded nano-iron composite material, so that nano-iron is distributed unformly in the interior and on the surface of the bacterial cellulose film, and thus the ability of removal of microorganisms/organic pollutants is improved.

The invention relates to a preparation method of a nano zinc oxide rod, and the preparation method comprises the steps that zinc acetate is prepared into solution with concentration of 0.09 to 0.72mol/L; sodium hydroxide (NaOH) is dropped into the solution until the precipitate is completely dissolved; polyacrylamide polymer compound template agent which is 1.05 percent to 12.6 percent of the mass of the added zinc is added into the completely dissolved solution, the solution is poured into a reaction kettle after being blended for 10 to 30min with a rotation speed of 1500 to 2500r/min, and the solution is reacted for 1 to 24h under the temperature of 100DEG C to 180DEG C; and reaction products are filtered, washed and dried to obtain the nano zinc oxide rod. The preparation method has the advantages of small template agent consumption, no pollution, simplicity and convenience in method and adaptability to mass production.