93results about How to "Scientific and reasonable preparation" patented technology

The invention provides a method for controllably synthesizing pure phase anatase, rutile, brookite titanium dioxide nano-rod. The pure phase anatase, rutile, brookite titanium dioxide nano-rod can be controllably synthesized by controlling the reaction condition of precursor prepared by titanium dioxide powder and alkali solution through a simple hydrothermal method. The method of the invention controllably synthesizes pure phase anatase, rutile, brookite titanium dioxide nano-rod through a simple hydrothermal method at a lower temperature and under a condition without adding any surfactants or templates and has advantages of simply operation, low cost, stable performance, high purity, obvious economic benefit and social benefit which can be synthesized in a large amount.

The invention provides a liquid nozzle and a manufacturing method thereof. The manufacturing method of the liquid nozzle comprises the following steps that an insulating material layer used as an oscillating plate is arranged on the common electrode surface of a piezoelectric element; a first thin layer made of optical imaging high molecular materials is arranged on the surface of the insulating material layer, and an area determined as a liquid cavity in the first thin layer is exposed for the first time; a second thin layer made of optical imaging high molecular materials is arranged on the surface of the exposed first thin layer, and an area determined as a liquid spraying hole in the second thin layer is exposed for the second time; and developing liquid is utilized to develop and remove unexposed materials from the first thin layer and the second thin layer, so as to form the liquid cavity and the liquid spraying hole. According to the liquid nozzle disclosed by the invention, integrated forming of the liquid cavity and the liquid nozzle is implemented through double exposure and one-time development, the strength of the liquid cavity and the rate of finished products are increased, and the liquid nozzle is favorable for improving the quality of printing equipment.

The invention relates to an external refining technology of various micro-alloy steels and special steels, in particular to a technology for removing slag inclusions in molten steel by the external refining technology. The technology of the invention comprises the steps as follows: a. molten steel is refined at LF, RH, VD or CAS-OB work position; b. a wire feeding technology is adopted to feed cored wires into the molten steel at the work positions; c. the molten steel is then directly cast on a machine after the wire feeding and the continuous casting adopts a whole-process protection casting. As the added cored wires have a scientific and reasonable prescription, when micro-air bubbles occur in the molten steel, the bubbles have high collision probability with the slag inclusions and fine slag drops have the function of wash heat and can also effectively remove the slag inclusions in the molten steel. The technology of the invention can control the size and the quantity of the non-metallic inclusions in steel and the total oxygen amount can be controlled to be 3ppm to 14ppm, the equivalent diameter of the impurities to be 0.5 micron to 9 micro and the average area of the impurities to be 0.002 percent to 0.008 percent, thus greatly improving the clearity of the molten steel and reducing the smelting cost.

The invention relates to an external refining process for various microalloy steel and special steel, in particular to a process method for external refining desulphurization, which is the preferred process method for desulphurization during the refining processes of various microalloy steel or special steel. The process comprises the following steps of: a. deoxidation: molten steel is firstly subjected to deoxidation treatment to realize that alpha[O] is less than or equal to 0.0003 percent; b. the adjustment of a RH station: the positions of a RH descending tube and a blanking tube are adjusted to ensure that the RH descending tube is positioned at the opposite side of the blanking tube; c. the adding of compound spheres: after a ladle is transported to the RH station, the compound spheres are added into the molten steel at the RH station after temperature measurement sampling, vacuum pumping, clean recycle and refining are finished; and d. continuous casting: the continuous casting adopts the whole-process protection. Proven by application, the process has strong desulphurization ability with a desulphurization rate between 60 and 90 percent, can realize the refining desulphurization of the molten steel until the content of sulfur is lower than 0.0010 percent, greatly improves the purity of the molten steel, and reduces smelting cost.

The invention relates to a Zro2 thermal barrier coating prepared by a plasma spraying method. Firstly, stabile nano-zirconia powder with large specific surface areas can be prepared through using ZrO(NO3)2 as a zirconium source and adding epoxypropane, and then the <{EN0}>Zro2 thermal barrier coating can be prepared through adding a proper amount of Lu2O3, In2O3, Al2O3 and TiO2 on the basis of the prepared stabile nano-zirconia powder with the large specific surface areas. The prepared coating is good in stability and relatively high in corrosion resistance.

The invention relates to a ZrO2 thermal barrier coating prepared by electron-beam physical vapor desorption. A preparation method of the ZrO2 thermal barrier coating comprises the following steps of: firstly, preparing stable nanometer zirconia powder with a large specific surface area by adopting ZrO(NO3)2 as a zirconium source and dropwise adding epoxypropane, and then preparing the ZrO2 thermal barrier coating by adding a right amount of Lu2O3, In2O3, A12O3 and TiO2 on the basis of the prepared stable nanometer zirconia powder with the large specific surface area. The prepared coating has good stability and high corrosion-resistant performance.

A preparing method of an oil-proof modified composite environment-friendly rubber base material is disclosed. The method includes preparing graphene oxide having a high oxidation degree, modifying the graphene oxide and preparing the oil-proof modified composite environment-friendly rubber base material. The base material adopts pitch-based carbon fibers to enhance mechanical properties, and can greatly adsorb and clean harmful gas and dust compounds in tail gas. Prepared MC nylon has an advantage of good comprehensive properties. The base material can be used for works under various bad conditions. Added components can effectively ensure no easy combustion of a protected material, and do not generate gas harmful to human bodies during combustion at overhigh temperatures. Compared with hydrotalcite in the market at present, the base material has obvious advantages in the fields of high-temperature resistance, fire protection and flame retardance.

The invention discloses a method for performing in-vitro culture to bovine preadipocytes, belonging to the technical field of cell and tissue engineering. The method is based on the traditional subculture method, a tissue homogenizer is utilized and combines with the collagenase I culture medium to treat the fatty tissue, a DMEM (Dulbecco's Modified Eagle Medium)/F12 culture solution containing fetal bovine serum is used to perform in-vitro culture to bovine preadipocytes, and a new model of the in-vitro culture of bovine preadipocytes is successfully built. The technology is advanced and simple, the preparation of the culture medium is scientific and reasonable, manpower and material resources are saved, and the treatment time of the test sample is greatly shortened; the obtained cell morphology is best, the RNA (Ribonucleic Acid) culture and extraction efficiency is maximum, the preadipocyte culture method is convenient and efficient in a long term and lays the foundation for the gene expression and protein expression and the signal pathway in the later intensive study of the proliferation and differentiation process of preadipocytes; and a new idea and a new method are provided to regulate body fatness deposition of beef cow and prevent diseases in the perinatal period and lactation peak period of milk cow, etc.

The invention relates to a method for preparing a zirconium oxide thermal barrier coating by a spraying process, which comprises the following steps: preparing large-specific-area stable nano zirconium oxide powder by a green environment-friendly process; and on the basis of the prepared large-specific-area stable nano zirconium oxide powder, adding proper amounts of Lu2O3, In2O3, Al2O3 and TiO2 to prepare the ZrO2 thermal barrier coating. The prepared coating has the advantages of high stability and high corrosion resistance.

The invention provides a novel high performance magnetic material for energy-saving lamps, and belongs to the technical field of magnetic materials for energy-saving lamps. The novel high performance magnetic material for the energy-saving lamps solves the problem of magnet ring existence in the prior art. The novel high performance magnetic material for the energy-saving lamps of the invention is added with additives on the basis of Fe2O3-MnO-ZnO ternary prescription, and the additives are Co2O3, CuO and SrCo3. The preparation process of the magnetic material of the invention comprises the following steps: mixing raw materials according to raw material proportion, then, pre-sintering, ball-grinding, pelleting, shaping, discharging glue, sintering and polishing surfaces. The raw material prescription and preparation process of the invention are scientific and rational, and the prepared magnetic material is used to manufacture magnetic rings, and has excellent performance, and energy-saving lamps adopting the magnetic ring have the advantages of long service life, low cost, excellent light emitting effect and the like.

The invention relates to a method for preparing a corrosion-resistant zirconium oxide thermal barrier coating. The method comprises the following steps of: firstly, preparing stable nano zirconium oxide powder with a large specific area by adopting an environment-friendly method; and then adding an appropriate amount of Lu2O3, In2O3, Al2O3 and TiO2 on the basis of the prepared stable nano zirconium oxide powder with the large specific area so as to prepare a ZrO2 thermal barrier coating. The prepared coating is good in stability and has relatively high corrosion resistance.

The invention discloses an anti-aging graphene nanometer environment-friendly modified plastic color master batch and a preparation technology thereof. According to the anti-aging graphene nanometer environment-friendly modified plastic color master batch and the preparation technology thereof provided by the invention, fiber films with different diameters and pores are manufactured structurally, and the nanometer graphene between layers is combined for improving the pore and specific area of the compound adsorption film, so that the effect is enhanced. According to the invention, pitch-based carbon fiber is adopted for enhancing the mechanical properties of materials and thus harmful gas and dust substances in tail gas can be greatly absorbed and cleared.

The invention relates to a writing brush cleaning agent and a preparation method and belongs to the technical field of cleaning agents. The writing brush cleaning agent and the preparation method are used for achieving the aims of effectively cleaning writing tips of goat-hair writing brushes and facilitating reuse. The technical scheme of the invention is as follows: the writing brush cleaning agent is prepared from ingredients in percentage by mass: sodium dodecyl sulfonate, polyoxyethylene lauryl ether, cocamidopropyl betaine, sodium citrate, tripolyphosphoric acid, sodium phosphate and the like. The preparation method comprises the steps of carrying out weighing, carrying out mixing, carrying out storage and carrying out packaging. The writing brush cleaning agent is prepared from a surfactant and various auxiliaries and adjuvants, so that the cleaning effect is improved. The preparation is simple and convenient. The writing brush cleaning agent has been used, and a good effect is achieved.

The invention discloses a novel micropore aluminum foil sound absorption acoustic screen and relates to the technical field of building material decoration products. By adopting the key technology of 'using ultra-thin aluminum foil as a substrate micropore sound absorption structure', the manufacturing method comprises the following steps: the substrate aluminum foil is subjected to cutting, shearing, pricking, swaging, gluing, bonding and sawing to be manufactured into micropore sound absorption aluminum foil for use; an aluminum plate is subjected to cutting, scribing, angle opening, punching, bending, welding, polishing and spraying to be manufactured into an acoustic screen body for use; the micropore sound absorption aluminum foil and the acoustic screen body are assembled together to be manufactured into the finished product of the novel micropore aluminum foil sound absorption acoustic screen. The novel micropore aluminum foil sound absorption acoustic screen is used for sound absorption and insulation, and is ingenious in conception, reasonable in structure, good in sound absorption and insulation effect, resistant to impact, safe, reliable, retardant to flames, durable, convenient to install, use and maintain, attractive and elegant as a whole, easy to manufacture, low in cost, wide in application range, and beneficial to popularization and application.