53results about How to "Paramagnetic" patented technology

The invention discloses a preparation method of nano carbon material reinforced epoxy resin composite material, which comprises the steps of: reacting nitrogen and free radicals with ferric iron salt, then reacting with polyester type diol to form oligomer, then reacting with diisocyanate to form isocyanate group-terminated oligomer, carrying out surface modification on nano carbon particles with the oligome, then blending with epoxy resin and curing under the action of magnetic field. According to the epoxy resin composite material, reactive functional groups are introduced to the surface of the nano carbon material and have excellent dispersibility in epoxy resin aggregate, so that the processability of the nano carbon material is greatly improved; and at the same time, the nitrogen and oxygen free radicals are connected by iron ion, so that the nano carbon particles have certain paramagnetism and can realize oriented arrangement in epoxy resin in lower external magnetic field, thereby sufficiently exerting the reinforcing characteristic of the nano carbon material.

The invention provides a magnetic nano silver antibacterial material for sterilization treatment in medical treatment and/or drinking water and a preparation method thereof. An antibacterial agent provided by the invention takes magnetic nanoparticles coated with silica gel as a core and inlaid with antibacterial particles on the outer layer, is preferably a Fe3O4 magnetic nano antibacterial material which is inlaid with silver nanoparticles and coated with silica gel. The antibacterial agent simultaneously has large special surface area of nano material, magnetic separation capacity and magnetic target of magnetic material, dispersant effect of a silica gel coating layer, protection action on the core and strong antibacterial ability of nano silver. In addition, the antibacterial agent issimple to prepare and convenient to operate and can realize directional sterilization, thereby having wide application prospect in medical care and food sanitation sterilization treatment.

The invention discloses a magnetic nanocomposite based on a two-dimensional stratified material magadiite, and a preparation method and application thereof. According to the method, the magnetic nanocomposite based on the two-dimensional stratified material magadiite is compounded at one step based on the coprecipitation method, and ferroferric oxides in the compounded magnetic nanocomposite are loaded among layers and on the surface of the magadiite evenly, so that the problems that ferroferric oxide nanoparticles are easy to agglomerate and the magadiite serving as an adsorbent is difficultto separate are solved, and the magnetic nanocomposite has paramagnetism and biological compatibility as the ferroferric oxides as well as ion exchange property and adsorbability as the magadiite. Themagnetic nanocomposite, and the preparation method and the application thereof have the advantage of simple process, easiness in operation, non-existence of harmful substances in raw materials, environment protection, energy conservation, low cost and easiness in industrial production. The magnetic nanocomposite based on the two-dimensional stratified material magadiite is applied to remove organic dye in water pollutants, have good adsorption performance and can be separated quickly under the action of an external magnetic field.

The invention discloses a preparation method of up-conversion fluorescence/paramagnetic difunctional nanocrystal, relating to a luminescent nanometer material. A quick and environment-friendly preparation method of up-conversion fluorescence/paramagnetic difunctional nanocrystal is provided, which comprises the following steps: dissolving rare-earth oxide in a determined molar ratio into hydrochloric acid or nitric acid solution to obtain chloride or nitrate solution mixed with various rare-earth elements; mixing sodium hydroxide, oleic acid, ethanol and water; fully stirring the mixture to obtain a homogeneous solution; adding rare-earth chloride or nitrate solution and sodium fluoride water solution, and fully mixing to obtain reaction precursor; and performing microwave synthesis of the reaction precursor solution, and after the reaction stops, centrifugating, washing and drying the product to obtain up-conversion fluorescence/paramagnetic difunctional nanocrystal. The preparation method well combines the ethanol/water solvent system and the microwave heating, is green and environment-friendly, has simple process, is easy to obtain cheap raw materials and has high efficiency; the product has regular shape, uniform size and good dispersity and has up-conversion fluorescence and paramagnetic properties.

The invention discloses a method for preparing FePt:RE amorphous alloy nano material mixed with rare earth elements, platinum-containing inorganic salt/platinum-containing composition, iron-containing inorganic salt/iron-containing composition and water soluble salt of RE(RE=Eu, Dy, Ce) are used as the reaction precursor, the reaction precursor, organic solvent and phase transfer catalyst crown ether are put into a high pressure kettle, and the needed product is obtained through reaction by making use of the phase transfer among the reactants and the coreduction of the reaction precursor and taking oleic acid as the stabilizer. Based on the invention, alloy nano particles of FePt:Ce, FePt:Dy and FePt:Eu with the particle diameter being 3-5nm can be synthesized, the synthesized alloy nano particles have chemical out-of sequence fcc structure, the amorphous state inclination of the alloy is reinforced by mixing Eu, and the coercive force is greatly enhanced. The alloy nano particles of FePt:Ce and FePt:Dy are processed by backfire at 600 DEG C, the structure thereof carries out phase variation on sequenced L10. At the same time, with the enhanced coercive force, the thermal stability of the FePt:Eu alloy is reinforced by mixing Eu, thus having certain phase variation inhibition effect; in addition, the FePt alloy nano particles are caused to have fluorescence by mixing rare earth elements.

The invention discloses a micro-arc oxidation preparation method of a magnetic TiO2 bioactive coating. In an air environment, an electrolytic solution containing calcium salt, phosphor salt and molysite is taken, a pH value of the electrolytic solution is adjusted to be 5.0-5.3, titanium or a titanium alloy is taken as an anode, stainless steel is taken as a cathode, and titanium or the titanium alloy is subjected to micro-arc oxidation treatment for 1-8min by adopting a pulsed power supply, with the temperature of the electrolytic solution being kept at 5-25 DEG C, thus the magnetic TiO2 bioactive coating is generated on a surface layer of titanium or the titanium alloy. The magnetic TiO2 coating having magnetism (Ms being 0.2696-1.101emu/g) and good bioactivity can be prepared with the adoption of the micro-arc oxidation preparation method.

The invention relates to a magnetic electrode small-particle-size hydroxide ion generator. The magnetic electrode small-particle-size hydroxide ion generator comprises a raw material air supply channel, a cathode insulation fixation plate, a tunnel cylinder and an anode insulation fixation plate, wherein the cathode insulation fixation plate, the tunnel cylinder and the anode insulation fixation plate form a sealing cavity, the raw material air supply channel passes through the cathode insulation fixation plate and communicates with a cathode selection network inside the tunnel cylinder through a cathode conductive ring, the other end of the cathode selection network is connected with one end of an anode selection network, the other end of the anode selection network is fixed on the anode insulation fixation plate, an anode discharge needle is also fixed on the anode insulation fixation plate, the anode discharge needle is connected with a pulse high-frequency discharger, and the top portion of the tunnel cylinder is provided with a hydroxide ion air channel. Small-particle-size air negative ions prepared by use of the generator are widely applied, and since a prepared gas contains numerous negative hydrogen, oxygen ions and free electrons and is segmented and magnetized into small particle sizes, the magnetic electrode small-particle-size hydroxide ion generator can be widely applied to a health care industry, a medical industry and industrial combustion and machine combustion industries.

The invention discloses a photo-catalytic synergistic magnetic separation sewage treatment device and method. The photo-catalytic synergistic magnetic separation sewage treatment method comprises photo-catalytic reaction, micro-flocculation, disk magnetic separation, magnetic medium circulation and the like; an ultraviolet lamp group is arranged inside a photo-catalytic reactor; sewage enters froma water inlet pipe of the reactor; a magnetic photo-catalyst reacts with pollutants in the sewage under the irradiation of ultraviolet light and enters a micro-flocculation pool after photo-catalyticreaction, so that impurities in wastewater are attached to the surface of a magnetic medium and are removed by a fixed slag scraping device under the action of the magnetic force of a disk drive, andthe water purifying purpose is achieved. The photo-catalytic synergistic magnetic separation sewage treatment device and method disclosed by the invention have the benefits that the pollutants in thesewage are effectively removed under the actions of photo-catalysis, flocculation, a magnetic field and the like; the magnetic photo-catalyst can also be recovered and has a wide market application prospect; the magnetic medium, namely 'laterite', can achieve the purpose of treating wastes with wastes; the fixed slag scraping device is adopted for removing slag and has the advantages that the cost is low, a magnetic disk selects a permanent Rufe Boron magnet with extremely-high magnetic property, and the like compared with a traditional slag discharge device.

The invention discloses a method for preparing a magnetized and hydroformyled sheep red blood cell. The method comprises the following steps of: preparing nano magnetic beads; preparing a hydroformyled sheep red blood cell; preparing a magnetized and hydroformyled sheep red blood cell; coating protein on the magnetized and hydroformyled sheep red blood cell; detecting a sample; and observing the result. The prepared magnetized and hydroformyled sheep red blood cell can be used as an indicator cell of an agglutination test, a carrier, enzyme and a chemiluminescence matter of an antigen antibody agglutination test, or a carrier detected in a fluorescent material marking test. The magnetized and hydroformyled sheep red blood cell prepared by the method is long in retention period, simultaneously has paramagnetism, can achieve rapid aggregation and redispersion, avoids complicated centrifuge processes in the traditional agglutination test, and can be used for preparing artificial granular antigen antibodies with uniform sizes; coating and detection reaction are carried out in a uniform phase after a solid-phase carrier is replaced; and the method is full in action, high in sensitivity, low in cost than an elisa plate, and is mainly applied to a screening or quantitative detection test of a special red blood cell antibody and other soluble antigen antibodies.

The invention discloses a power distribution cabinet with a self-extinguishing function. The cabinet comprises a cabinet body, a liquid storage cavity is formed in the side wall of the cabinet body; the top in the cabinet body is rotatably connected with a plurality of fan blades through a rotating shaft, the top in the liquid storage cavity is connected with a gas ejector pipe, a pressure releasevalve is installed in the gas ejector pipe, the end, away from the inner wall of the liquid storage cavity, of the gas ejector pipe is right opposite to blades of the fan blades, and the bottom and the inner top in the cabinet body are symmetrically and fixedly connected with two electromagnetic plates with opposite poles. Carbon dioxide gas generated by heating a sodium bicarbonate solution is sprayed out from the gas ejector pipe; the fan blades are driven to rotate quickly while the concentration of carbon dioxide in the cabinet body is increased; due to the fact that the oxygen has the paramagnetism, the oxygen in the cabinet body moves towards the upper half portion of the cabinet body, the concentration of the oxygen in the lower half portion of the cabinet body is reduced, and fireon electronic elements located on the lower half portion of the cabinet body is restrained.

The invention discloses a dysfunctional photoproduced color bleeding compound and synthesizing method and application with stable nitrogen-oxygen free radical and spiral oxazine radical, which is characterized by the following: adopting substituted 9'-hydroxy indole oxazine and stable nitrogen-oxygen free radical as raw material; obtaining the product with structural formul as right formula (R1 is C1-C18 alkyl; R2 is hydrogen, C1-8 alkyl, C1-8 alkoxy, halogen or condensed benzene ring; L is connecting arm - (CH2) m-; m is between 1 and 9).

The invention relates to a method for preparing paramagnetic Fe3O4-PAMAM-ZnO-TiO2 core-shell-shell-structured nanoparticles by taking polyamide-amine(PAMAM) dendrimers as a template and a separation layer in a low-temperature aqueous solution. The method is characterized in that firstly, the PAMAM dendrimers are firstly taken as the template, and a paramagnetic Fe3O4-PAMAM nanoparticle colloidal solution is prepared by adopting a coprecipitation method; secondly, the PAMAM dendrimers are added to wrap Fe3O4-PAMAM nanoparticles; thirdly, under the alkaline condition, soluble zinc salt is added to generate a ZnO shell layer; fourthly, a titanium tetrachloride solution is added to generate a TiO2 shell layer, and then the paramagnetic Fe3O4-PAMAM-ZnO-TiO2 core-shell-shell-structured nanoparticles with the complete ZnO shell layer and TiO2 shell layer are prepared. The nanoparticles can be dispersed into a solution in a single particle mode and have the higher photocatalytic activity and magnetic recovery rate.

The invention provides a zerovalent nano-iron coated polymethyl methacrylate and a preparation method thereof. The preparation method comprises the followings: after zerovalent nano-iron, a monomer, a chain transfer agent, a co-stablizer, an emulsifying agent and water are emulsified, a miniemulsion is obtained; under the protection of protective gas, after the miniemulsion obtained in the last step is heated for reaction, the zerovalent nano-iron coated polymethyl methacrylate is obtained; the protective gas is inert gas or nitrogen; the monomer is methyl methacrylate or epoxypropyl methacrylate. In nanocomposite provided by the invention, molecular weight and molecular weight distribution of the polymethyl methacrylate are both controlled, and paramagnetism exists at the same time.

The invention discloses a magnetic microbial carbon-loaded cerium and cobalt composite nano ozone catalyst and a preparation method and application thereof. Microorganisms or microbial residues are used as an adsorbent, after cerium and cobalt ions are adsorbed, potassium hydroxide is added to isolate air for thermochemical treatment, nano-particles of the metal simple substance and the oxide thereof are precipitated on the surface and micropores of the carbonized microbial carbon material so as to obtain the paramagnetic microbial carbon-loaded cerium and cobalt composite nano-catalytic material. The prepared magnetic microbial carbon-loaded cerium and cobalt composite nano catalytic material is used for respectively treating oxalic acid and coking wastewater and has a relatively strong catalytic ozonation effect, the recovery rate of the material after magnetic separation is 99.9%, and the material can be efficiently and magnetically recovered. The invention constructs a novel efficient and environment-friendly magnetic catalyst preparation method, the problem that a biochar-loaded metal nano ozone catalyst is difficult to recover is efficiently solved, and meanwhile, waste mushroom dregs are recycled to produce high-value products.

The invention relates to a green-light upconversion lanthanium titanate-based paramagnetic glass material and a preparation method thereof. The green-light upconversion lanthanium titanate-based paramagnetic glass material is prepared from the following compositions through the following method: (1) introducing a magnetic composition Gd2O3 into a lanthanium titanate-base material; and (2) mixing powders of various oxides forming the green-light upconversion lanthanium titanate-based paramagnetic glass material, performing melting and solidification in an air-suspending container-free furnace, so as to prepare the green-light upconversion lanthanium titanate-based paramagnetic glass material. The green-light upconversion lanthanium titanate-based paramagnetic glass material also possesses good mechanical strength, thermal performance and relatively low phonon energy, and possesses wide application prospect in fields of short-wavelength laser devices, optical waveguide, information storage and the like.

The invention provides a magnetism-fluorescence multifunctional nanometer material and a preparation method thereof, and belongs to the technical field of fluorescent materials. The preparation methodcomprises the following steps that firstly, every 0.5 g of NaOH is dissolved in 2-6 mL of deionized water, after uniform mixing, 5-10 mL of ethyl alcohol and 8-15 mL of oleic acid are added, and a solution A is obtained after uniform mixing; secondly, a ErCl3 and MnCl2 mixed water solution B with the total concentration of 1 mmol/mL is prepared; thirdly, the mixed water solution B is added into the solution A for uniform mixing, and then a mixed solution C is obtained; fourthly, 1-3 mmol of NaF is added into the mixed solution C, stirring is conducted for 60-100 minutes, and then an initial product is obtained; fifthly, the initial product obtained in the fourth step is transferred into a high-pressure autoclave and reacts for 100-300 minutes at the temperature of 140-240 DEG C, and thena product is obtained; sixthly, the product obtained in the fifth step is cooled to the room temperature and washed, the precipitate obtained after washing is dried, and then the magnetism-fluorescence multifunctional nanometer material is obtained.

The invention discloses a high-resolution heat flow signal measuring system for a wide temperature range in a high magnetic environment. The high-resolution heat flow signal measuring system is composed of two constant-current source circuits, a heat flow sensor, a low-temperature-drift low-noise amplifier module and a signal measuring circuit. The two constant-current source circuits can adjust feedback, supply power to the platinum wire temperature measuring thermal resistors symmetric in pairs of the heat flow sensor, and calculate a temperature difference by a voltage difference generatedby the two groups of platinum wire temperature measuring thermal resistors, thereby generating a differential thermal signal. The differential thermal signal is amplified by a group of low-temperature-drifting low-noise amplifier module, and finally is acquired and measured by a high-resolution 24-bit [sigma]-[delta] analog-to-digital converter. Compared with the prior art, the high-resolution heat flow signal measuring system has the following characteristics that 1, the heat flow sensor has a paramagnetic property and is not affected by the strong magnetic environment; 2, the heat flow sensor has a wide temperature measurement range; 3, the heat flow sensor can generate a large heat flow signal with good repeatability; and 4,a heat flow signal amplification module has magnetic shieldingand a constant-temperature housing, and eliminates the influence of noise and temperature drift.

The invention discloses a mesoporous composite material Fe3O4-Co3O4 and a preparation method thereof, and application of the mesoporous composite material Fe3O4-Co3O4 in degradation of gaseous pollutants. The preparation method comprises the following steps: respectively dissolving an iron salt and a cobalt salt in an aqueous solution to obtain an iron-containing solution and a cobalt-containing solution; mixing the iron-containing solution and the cobalt-containing solution, fully stirring, adding an aqueous solution containing F127, and drying the final mixed solution; and calcining the dried product under an inert gas or air condition, cooling to room temperature, and grinding to obtain the mesoporous composite material Fe3O4-Co3O4. The mesoporous composite material Fe3O4-Co3O4 disclosed by the invention has the capability of adsorbing and degrading pollutants, so that gaseous pollutants such as isopropanol and the like can be effectively and conveniently degraded, and the purpose of purifying air is achieved.

The invention discloses a safety badminton racket and a making method thereof, which belong to the technical field of sports equipment and aim at solving the problems of poor toughness, poor torsion resistance performance and low safety of the racket in the prior art. The safety badminton racket comprises an aluminum alloy middle bar, a racket frame arranged at the top end of the aluminum alloy middle bar, and a handle arranged at the bottom end of the aluminum alloy middle bar and sleeving the aluminum alloy middle bar. The aluminum alloy middle bar is made of a special material, the weight is light, good toughness and good elasticity can be kept while high strength is ensured, the problem that the middle bar is broken due to impact during the use process can be avoided, the whole safetyperformance is enhanced, an adjusting device is used to enable the gravity point of the middle bar to be adjusted, the strength of the badminton racket is adjusted according to a different user, and the middle bar applicability unity is avoided.