46 results about "Ferrosoferric Oxide" patented technology

The invention discloses a method for preparing a reduced graphene oxide/nanometer ferrosoferric oxide composite magnetic adsorbent. The method comprises the steps: (1) arranging a reactant system, mixing uniformly to obtain a reactant mixed solution, wherein the reactant system comprises water/an ethylene glycol binary solvent, graphene oxide, ferric chloride hexahydrate, sodium citrate and sodium acetate; (2) preparing the composite magnetic adsorbent by a water/ethylene glycol co-heating method. The invention improves a traditional solvothermal method, and uses a water and ethylene glycol binary solvent heat method, thereby enabling the prepared rGO/Fe3O4 to have good magnetic response ability.

The invention relates to the technical field of biomedicine and discloses low-intensity focused ultrasound response type phase-change thrombolysis nano particles which comprise shell polylactic acid-glycolic acid copolymer PLGA, wherein ferrosoferric oxide Fe3O4 is embedded into the shell; perfluorohexane PFH is coated in the shell; the shell is connected with CREKA polypeptide targeting fibrin. The low-intensity focused ultrasound response type phase-change thrombolysis nano particles can solve the problem of an unsatisfactory thrombolysis effect caused by limited drug loading capacity or drug inactivity of drug-loading nano particles in the prior art.

The present invention is a method for producing a fluid dynamic pressure bearing made of powder sintered metal and that grooves for generating dynamic pressure are formed on an inner peripheral surface and whose object is to facilitate forming a ferrosoferric oxide (Fe₃O₄) membrane on a surface of a bearing material, the method comprising compacting metal powder including at least not less than 70% by weight of particles with diameters of not more than 45 μm to gain a bearing material, sintering said bearing material, forming grooves for generating dynamic pressure on said sintered bearing material, and performing steam treatment to said sintered bearing material with said grooves to form a ferrosoferric oxide (Fe₃O₄) membrane on a porous surface of an inner surface or on porous surfaces of an inner surface and both end surfaces, so that gaps between particles become small because diameters of the particles of material powder of a powder sintered bearing material are approximately even and fine and are even small pores, as a result, sealing pores on the surface due to steam treatment is easy and dynamic pressure cannot be leaked.

The invention discloses a preparation method of double-layer Fe3O4@SiO2 magnetic composite nanoparticle. The ferrosoferric oxide nanoparticle is dispersed in trisodium citrate, treated in water bath,washed alternately with acetone and deionized water, and dried in vacuum to obtain ferric oxide particles; Fe3O4 particles are weighed and dispersed in ethanol solution, ethyl orthosilicate, ammonia water and water are added and react in a homogeneous reactor for 4 h to obtain a single-layer coated Fe3O4@SiO2 composite; the Fe3O4@SiO2 composite material is dispersed in ethyl alcohol, hexadecyl trimethyl ammonium bromide, ethyl orthosilicate, ammonia water and water are added and the raw materials react for 6 h in a homogeneous reactor, so as to obtain the double-layer coated Fe3O4@SiO2 magnetic composite nanoparticle. The invention adopts an improved Stober method to prepare double-layer Fe3O4@SiO2 magnetic composite nanoparticles, which have compact particle structure and good monodispersity.

The inventive concept provides an anti-corrosion material, an anti-corrosion layer made therefrom, and a cookware including the anti-corrosion layer. The anti-corrosion material comprises a plurality of anti-corrosion particles, each anti-corrosion particle comprises a metal material and a non-metal material bonded with the metal material through a binder, and the metal material comprises at least one of titanium, titanium alloy, stainless steel, nickel and nickel alloy. The non-metallic material comprises at least one of titanium oxide, titanium nitride, titanium carbide, ferroferric oxide, ferric oxide, aluminum oxide, an AT composite material and silicon oxide. An anti-corrosion layer formed by using the anti-corrosion material according to the inventive concept has the beneficial effects of tight combination with a base body and excellent anti-corrosion performance at the same time.

The invention relates to a shell-structure heat storage magnetic material and a preparation method thereof. The shell-structure heat storage magnetic material comprises a core body, a heat storage inner layer and a magnetic outer layer, wherein the core body is in a spherical shape, the heat storage inner layer wraps an outer layer of the core body, the magnetic outer layer wraps an outer layer ofthe heat storage inner layer, the material of the core body is n-octadecane, the material of the heat storage inner layer is a methyl methacrylate-methacrylic acid polymer, and the material of the magnetic outer layer is ferrosoferric oxide. High-efficiency heat storage is achieved by employing the n-octadecane and the methyl methacrylate-methacrylic acid polymer, the ferrosoferric oxide is synthesized on a surface of the methyl methacrylate-methacrylic acid polymer to form integration of heat storage and magnetic effect, the saturation magnetic intensity of the synthesized heat storage magnetic material is 12.5 emu.g<-1>, and the enthalpy can reach 152.2 J.g<-1>.

The invention belongs to the technical field of radar wave-absorbing materials and particularly relates to a high-temperature resistant radar wave-absorbing material based on a double-layer metamaterial and a preparation method of the high-temperature resistant radar wave-absorbing material. The high-temperature resistant radar wave-absorbing material is prepared from an inner dielectric layer, aninner resistor type high-temperature metamaterial layer, a middle dielectric layer, an outer resistor type high-temperature metamaterial layer and an outer dielectric layer in turn from inside to outside, wherein the inner resistor type high-temperature metamaterial layer is prepared from the following raw materials in parts by weight: polyphenylene sulfide, polytetrafluoroethylene, silicon nitride, ferrosoferric oxide, 2-hydroxypropyl acrylate, copper fiber and a lubricant; the outer resistor type high-temperature metamaterial layer is prepared from the following raw materials in parts by weight: polypyrrole, polytetrafluoroethylene, nano zinc oxide, barium lanthanum hexaboride, dimethylaminoethyl acrylate, calcium sulfate, copper fiber and a lubricant. The high-temperature resistant radar wave-absorbing material based on a double-layer metamaterial provided by the invention has the advantages of simple structure, wide wave-absorbing frequency band, strong wave-absorbing ability, lowdensity and high stability.

The invention discloses a laterite nickel ore processing method. The laterite nickel ore processing method comprises the steps that laterite nickel ores makes contact with carbon monoxide and conduct an reduction reaction and a carbonylation reaction in a multi-stage fluidization reactor, so that first mixed gas and residues containing ferrosoferric oxide are obtained; the first mixed gas is cooled so as to be separated, and thus liquid nickel carbonyl and second mixed gas are obtained; the liquid nickel carbonyl is decomposed, so that carbon monoxide and nickel are obtained; and the first mixed gas includes the carbon monoxide, carbon dioxide and the nickel carbonyl, and the second mixed gas includes the carbon monoxide and the carbon dioxide. According to the laterite nickel ore processing method, the technological process is short, energy consumption is low, and the nickel extraction efficiency can be improved significantly.

Shells of solar water tanks are generally made of colored steel plates and are economical, practical and attractive, however, the solar water tanks are basically mounted outdoors, the shells of the water tanks are easily affected by surrounding environments, then, protective coatings of the surfaces of the colored steel plates easily fall off, thus, the colored steel plates are corroded, and then, the durability and attractiveness of the water tanks are affected. Therefore, it is the general trend to research and develop a high-effective anticorrosive coating material. The invention relates to the field of preparation of coating materials and particularly relates to an anticorrosive coating material and a preparation method therefor. The anticorrosive coating material is prepared from the raw materials, including epoxy resin, unsaturated poly-vinegar resin, a reactive diluent, aluminum tripolyphosphate, micaceous iron oxide, iron oxide red, talcum powder, glass powder, nano-alumina, nano-titania, an anti-settling agent, a film forming agent, a thickener, an antifoamer and a leveling agent. The coating material disclosed by the invention is a solvent-free coating material and is resistant to environmental pollution; nano-materials are added into the formula, so that the compactness of the coating material is improved, and the water resistance and corrosion resistance are improved; and the production process is simple, the performance is excellent, and the coating material can resist the corrosion of various acids and bases.

The invention discloses an adsorbent as well as preparation, regeneration method and application thereof. The method for preparing the adsorbent comprises the following steps: mixing 1-3g/L graphene oxide dispersion liquid and 0.025-0.1mol/L ferrous sulfate solution and performing ultrasonic treatment to obtain a mixed solution; adjusting the pH value of the mixed solution to alkalinity, and performing co-precipitation treatment to obtain a three-dimensional graphene compound loaded with ferrosoferric oxide; heating the three-dimensional graphene compound loaded with ferrosoferric oxide to obtain the adsorbent with enhanced mechanical strength. The adsorbent prepared by the method has the advantages of strong adsorbability on such pollutants as PPCPs, high mechanical strength, easiness inregeneration and good catalytic performance.

The invention relates to a preparation method of magnetically separable recycling magnetic iron oxide (gamma-Fe2O3)/bismuth tungstate photocatalytic composite. With the synthesized ferrosoferric oxideand bismuth tungstate as raw materials, the composite is prepared by the processes of polyethylene glycol mixing, oxidation and the like; the composite has the advantages of high magnetic separationefficiency, photocatalysis reusing and the like. The preparation method comprises the following steps: (I) synthesizing ferrosoferric oxide and bismuth tungstate nanoparticles by a solvothermal process respectively; (II) adding polyethylene glycol, and uniformly mixing the ferrosoferric oxide and bismuth tungstate nanoparticles in an aqueous solution; (III) performing magnetic separation, sufficiently washing and drying at 80 DEG C; (IV) calcining the sample for 4 hours in air at 350 DEG C, wherein the ferrosoferric oxide is oxidized into gamma-Fe2O3, and a magnetically separable recycling magnetic gamma-Fe2O3/bismuth tungstate photocatalytic composite is obtained finally. The photocatalytic composite has the advantages of easiness in preparation process and recyclability.

The invention discloses environment-friendly healthcare shoe material beneficial to a human body. The environment-friendly healthcare shoe material comprises, by weight, 25-35 parts of soybean protein fibers, 30-45 parts of peanut fibers, 10-15 parts of alumina fibers, 5-8 parts of ferrosoferric oxide, 6-10 parts of activated light calcium carbonate, 7-12 parts of calcium metaphosphate, 2-6 parts of magnesium dihydrogen phosphate, 1-6 parts of titanium dioxide, 50-100 parts of sorbitol and 0.8-3.5 parts of zirconium silicate. The shoe material has the advantages that the shoe material can improve the microcirculation of the human body and increase multiple elements of the human body; plant fibers are added into the shoe material to allow the same to be environmentally friendly and good in healthcare function.