332results about How to "Preparation method is stable" patented technology

The invention relates to the technical field of a lithium ion secondary battery, in particular to a preparation method of high-rate fast-rapid graphite. The preparation method is characterized by comprising the following steps of (1) smashing and shaping a raw material; (2) mixing; (3) performing graphitization high-temperature processing, in which graphitization high-temperature processing is performed on the mixed material for 24-48 hours at 2,800-3,200 DEG C under protection of inert gas; (4) mixing the materials; (5) performing low-temperature thermal treatment; (6) performing carbonization thermal treatment; and (7) screening the mixed material. compared with the prior art, the preparation method has the advantages that the graphite is high in charge-discharge rate, large in discharge capacity and good in cycle performance, a button cell prepared from the graphite has excellent comprehensive performance and has main following advantages of relatively good large-current charge-discharge performance, good electrochemical performance, good cycle property, relatively high safety, relatively good adaptability to an electrolyte and other additives and stable product characteristic, the charge-discharge rate can reach over 10C, and the preparation method is suitable for industrial production.

The invention discloses a magnetic carbon-based iron oxide compound material and a preparation method of the magnetic carbon-based iron oxide compound material. Particularly, the invention discloses a prepraation method of the magnetic carbon-based iron oxide compound material. The preparation method comprises the following steps of: (a) providing a mixture comprising a carbon-based precursor, elemental iron and a solvent; and (b) carrying out heating reaction on the mixture in the step (a), thus obtaining the carbon-based iron oxide compound material. The method has the advantages that materials are common and are easily available, and the process is simple, safe and effective and the like. The obtained compound material has stable magnetism, and is wide in application.

The invention discloses a preparation method for directly generating a hydroxyapatite-containing biological ceramic membrane on the surface of titanium, and aims to solve the practical problems that the prior art is complex in process, time-consuming, low in electrolyte utilization ratio, poor in membrane forming efficiency and the like. The preparation method adopts a basic method of micro-arc oxidation, and is characterized in that during the preparation of electrolyte, low-solubility calcium dihydrogen phosphate is used for providing phosphate anions and citric acid is used as a complexing agent. Compared with the prior art, although the solubility of the calcium dihydrogen phosphate used in the preparation method is low, the solubility of the calcium dihydrogen phosphate is improved after the calcium dihydrogen phosphate is complexed with the citric acid, calcium ions and phosphate anions are provided at the same time, the utilization ratio of the electrolyte is high, the reaction speed is high, the membrane forming efficiency is high, the preparation method is simple and easy to operate and low in cost, the hydroxyapatite-containing biological ceramic membrane prepared by the preparation method is stable in structure, uniform in distribution and high in effective matter content, and has a wide prospect in the fields of hard tissue implants, tooth planting and the like.

The invention provides a traditional Chinese medicine compound preparation for preventing and treating vaginitis and a preparation method thereof. The traditional Chinese medicine compound preparation comprises the following main raw materials in parts by weight: 50-70 parts of biological peptide, 15-28 parts of kuh-seng, 10-20 parts of cortex phellodendri, 10-20 parts of fructus cnidii, 5-10 parts of mint, 3-8 parts of chitosan, 5-30 parts of carbopol 940, 40-60 parts of glycerol, 2-5 parts of sodium hydroxide and 15-30 parts of mint oil. The biological peptide and traditional Chinese medicines are mixed and complementary mutually, can adjust balance, inhibit bacteria, purge fire for removing toxin, sterilize, resist inflammations, clear heat, dry dampness, dispel the wind, and kill parasites. Compared with the available preparation for preventing and treating the vaginitis, the traditional Chinese medicine compound preparation adopts a principle of mainly adjusting the balance, sterilizing and resisting the inflammations, and auxiliarily purging the fire for removing the toxin, clearing the heat, drying the dampness, dispelling the wind and killing the parasites, and is used for improving an acid environment in a vagina, inhibiting and eliminating the growth of the harmful bacteria, detoxifying, eliminating the dampness and diminishing the inflammations, so that the purpose of preventing and treating the vaginitis is achieved; and the preparation method is stable, practicable, controllable and applicable to mass production.

The invention discloses a preparation method and an application of hydrophobization beta-cyclodextrin cation polyelectrolyte. In a water phase, three monomers, namely polymerizable beta-cyclodextrin derivatives, acryloyl oxyethyl trimethyl ammonium chloride and styrene, are subjected to a free radical copolymerization reaction under an oxidation/reduction (potassium peroxodisulfate/sodium hydrogen sulphite) initiating system to obtain the hydrophobization beta-cyclodextrin cation polyelectrolyte product. The hydrophobization beta-cyclodextrin cation polyelectrolyte product is white powder solids and is stable in structure and convenient to store and transport, hydrophilcity is reduced and better solubility is still maintained; the preparation method of the hydrophobization beta-cyclodextrin cation polyelectrolyte product is simple, and low in energy consumption; no other auxiliaries such as a surface active agent is added in an aqueous solution polymerization process, and environmental pollution is less; and the hydrophobization beta-cyclodextrin cation polyelectrolyte product can serve as a novel flocculating agent for decoloration, the specific structure of beta-cyclodextrin (beta-CD) is reserved, toxicity and cost are low, flocculation capacity is strong, decoloration speed is high, an applicable pH range is wider (2-12), and salt tolerance is high.

The invention relates to the technical field of a lithium ion secondary battery, in particular to a preparation method of high-rate and rapid-charge graphite. The preparation method is characterized by comprising the following steps of (1) smashing and shaping; (2) mixing a modifying agent; (3) performing graphitization high-temperature processing; (4) mixing an adhesive; (5) performing low-temperature thermal treatment; (6) performing carbonization thermal treatment; and (7) screening a mixture. Compared with the prior art, the graphite has the advantages of high charge-discharge rate, large discharge capacity and good cycle performance; and the prepared button cell is excellent in integral performance and mainly has the following advantages that 1, the large-current charge-discharge performance is relatively good; 2, the electrochemical performance is good; 4, the cycle property is good; 5, the safety is relatively good; 6, the adaptability to an electrolyte and other additives is relatively good; and 7, the product property is stable, and the button cell is suitable for industrial production.

The invention relates to the technical field of glucose detection, and particularly relates to an enzyme-free glucose sensor, a production method and an application thereof. Magnolia grandiflora leaves are used as a carbon-based catalyst, nickel atoms are well dispersed when the magnolia grandiflora leaves are used as a substrate material, and the catalytic activity of the material is improved. And the prepared Ni@ NSiC nano molecular layer is modified on a pretreated white glassy carbon electrode to obtain a high-activity modified working electrode Ni@ NSiC/GCE, and glucose is detected by adopting a cyclic voltammetry and a chronoamperometry. The method solves a problem that dopamine, ascorbic acid, uric acid and other easily oxidized interfering substances exist when the glucose is detected through a traditional electrooxidation method. Test results show that the material has excellent electrochemical sensing performance on the glucose, has relatively high sensitivity, a good stability and anti-interference capability, and has a wide application prospect in the fields of electro-catalysis and biosensing.

A manufacturing method of a semiconductor device including an LDMOS transistor includes: a process (a) of forming a first conductive well diffusion layer in the semiconductor substrate; a process (b) of sequentially forming a gate insulator film, a gate conductive film, and a photoresist film on a region on the semiconductor substrate corresponding to the well diffusion layer; a process (c) of performing photolithography to remove a part of the photoresist film formed in a predetermined region, and etching the gate conductive film using a remaining part of the photoresist film as a mask so as to form an opening in the predetermined region; a process (d) of doping second conductive impurity ions using a remaining part of the gate conductive film and the remaining part of the photoresist film as a mask so as to form the body layer; and a process (e) of removing the remaining part of the gate conductive film except a part corresponding to the gate electrode formed based on a part that constitutes a lateral surface of the gate conductive film facing the opening.

The invention discloses a preparation method of acanthopanax effervescent tablet, which comprises the following steps of: (1) evenly mixing the acanthopanax extract with the lactose, drying and crashing to fine powder for later use; (2) wrapping the sodium bicarbonate with the polyethyleneglycol 4000 to obtain a mixed solution containing the inclusion; (3) spraying the mixed solution containing the inclusion in a rotation coating pan filled with the powder obtained in the step (1), screening and granulating to obtain the grains; and (4) screening the citric acid and the sodium cyclamate to obtain the grains, mixing with the grains prepared in the step (3) and the boletic acid powder and tabletting to prepare the finished product. In the preparation method, the sodium bicarbonate is wrapped by the polyethyleneglycol 4000 to avoid the direct contact of the sodium bicarbonate with the acid, thereby the stability of the preparation is enhanced, and the sticking problem when tabletting is solved. In addition, in the method of the invention, the lactose and the sodium cyclamate are utilized to replace the cane sugar for filling so that the moisture absorption is reduced. The preparation method has the advantages of simpleness, security, stability and high operability.

A method for manufacturing an optical film comprising a transparent substrate and at least one functional layer on or above the transparent substrate, wherein said at least one functional layer to be laminated on the transparent substrate is formed by a layer-forming method comprising the following steps (1) and (2): (1) step of applying a coated layer on the transparent substrate, and (2) step of curing the coated layer by irradiating ionizing radiation in an oxygen environment in which the oxygen concentration is lower than an atmospheric oxygen concentration.

The invention discloses a compound microbial preparation for preventing brown spot of Cassava and a preparing method thereof. The raw materials of the compound microbial preparation comprises fermentation liquor of streptomyces Durham, fermentation liquor of streptomyces Russa, fermentation liquor of mud Bacillus licheniformis, fermentation liquor of Paenibacillus Barcelona, and fermentation liquor of Trichoderma aggression. According to the compound microbial preparation for preventing brown spot of Cassava, cultures can make full use of antibiosis, competition, hyperparasitism, bacteriolysis of interspecific or intraspecific microorganism; and through secondary metabolite, Trichoderma is induced to generate disease resistance, which can produce multiple antibiotics such as durhamycin, antifungal pentaene antibiotics, and antibiotics which can produce antifungal tetraene; russa mycin is used to prohibit pathogenic bacteria in brown spot of Cassava, and improves disease preventing effect of Cassava. The Compound microbial preparation for preventing brown spot of Cassava is environmental friendly and safe to people and livestock, and can not easily generate drug resistance; meanwhile, the preparing method is simple in procedures, low in cost and easy in using.

The invention provide a method for preparing a simulated human body model. The method comprises the following steps that firstly, a head of the simulated human body model is prepared, and then an upper body and limbs of the simulated human body model are prepared; and each preparation step comprises processes of turning mold, mold covering by silica gel, finishing by oil sludge, obtaining glass fiber reinforced plastic female molds, obtaining glass fiber reinforced plastic male molds, discharging silica gel skins, fine repairing and coloring, and implanting hairs later. The simulated human body model is stable in preparation method and good in repeatability, a whole and complete simulated human body model can be made, the appearance of the made model is vivid, and a real person skin texture and skin color are realized; and the preparation method is simple, the operation is easy, the requirement on operators is low, and the method is suitable for large-scale production.

A center of a substrate having peripheral circuit components mounted thereon is hollowed in a size maintaining a distance for establishing a connection with a semiconductor chip through a conductor such that the semiconductor chip is bonded to a heatsink and the peripheral circuit components are arranged near the semiconductor chip so as to surround the semiconductor chip. Upon adhesion of a conductive paste material, for bonding the substrate to the heatsink having the semiconductor chip mounted thereon in a conductive manner, to a bottom face of the substrate, an adhesive tape is stuck to an edge of the substrate so as to prevent outflow of the conductive paste material, respective terminals are connected through conductors, and both the substrate and the heatsink are sealed with a resin.