59results about How to "Not easy to prepare" patented technology

The invention discloses a method for modifying a positive electrode of a lithium ion battery by adding a metal oxide / carbon composite material, and belongs to the technical field of secondary lithium ion batteries. The modification method comprises: mechanically mixing a positive electrode active material of the lithium ion battery with an electrode additive, wherein the electrode additive is the composite material and consists of two parts of a conductive carbon material carrier and a metal oxide load. The electrode additive can reduce the rate of increment of impedance of the positive electrode of the lithium ion battery along with charging / discharging cycle, thereby achieving the purpose of improving the cycle performance of the lithium ion battery.

The invention provides a diaphragm, a preparing method of the diaphragm and a lithium ion battery comprising the diaphragm. The diaphragm comprises a polymer substrate and slurry layers positioned at the inside and on the surface of the substrate; each slurry layer comprises ceramic particles and curing resin; the curing resin is obtained through performing cross-linking and curing reaction on curing agents or initiating agents positioned inside the substrate and cross-linking resin positioned in the slurry layers; the high-temperature-resistant performance of the diaphragm is excellent; a heat-resistant layer cannot easily fall; and the winding, the preparation and the practical application are easier.

The invention discloses electrolytic polishing solution for titanium and titanium alloys and an electrolytic polishing process, wherein the polishing solution is prepared by perchloric acid with volume fraction of 8-15% and acetic acid with volume fraction of 85-92%. The polishing solution is convenient in material selection, easy in preparation and storage, simple in polishing process equipment, easy in operation, smooth in surface, free of obvious scratches and oxide films and high in EBSD (Electron Back-Scattered Diffraction) pattern recognition rate, and has the effects of greatly reducing the superficial stress of the samples and greatly improving the detection precision.

The invention provides a preparation method for a nano particle and stable blue phase liquid crystal compound material. According to the method, inorganic nano particles which have different particle diameters, and are subjected to surface modification, and of which the dipole moment is 50 to 150d, such as ZnS particles, ZnO particles, GdS particles, GdSe particles and the like are added into a blue phase liquid crystal with a wide temperature range in a certain proportion, so that the blue phase liquid crystal can be restored reversibly under the action of highfield, and meanwhile, the temperature range of the blue phase can be widened to certain extent. The nano particle and stable blue phase liquid crystal compound material is easy to prepare, and has an obvious effect, and the prepared system is high in stability and low in viscosity, and can quickly respond to an electric field.

The invention relates to the technical field of organic light-emitting diode manufacturing, in particular to preparation of a top-emitting organic light-emitting diode (OLED) device anode structure. The top-emitting OLED device anode structure is characterized in that four layers of thin films cover a substrate, a base compatible layer, a middle reflectivity layer, a energy level matching layer and an anode modifying layer are respectively arranged on the substrate from bottom to top, multifunctionality of an anode is achieved through adoption of the design of a multi-layer thin film structure, light-emitting efficiency of a top-emitting OLED device is obviously improved, and the service life of the top-emitting OLED device is obviously prolonged. Furthermore, due to the fact that the anode is prepared by materials which are not prone to occurrence of element diffusion, probability of occurrence of shot circuit of device pixels due to the element diffusion is reduced. Due to adoption of metallic simple substance or alloy or metallic compound, raw materials can be easily obtained and are low in price, and thin film preparation methods are various.

The invention relates to the technical field of graphene, in particular to a preparation method of graphene for a heater. The method is characterized in that the graphene is prepared by adopting an oxidation-reduction method and specifically comprises the following steps: firstly, peroxidation of the graphene; secondly, oxidization of graphite, wherein oxidation treatment comprises four stages, namely low-temperature reaction, medium-temperature reaction, high-temperature reaction and after treatment; in the low-temperature reaction and the medium-temperature reaction, an ultrasonic and mechanical stirring combined action is adopted, and hydrogen is introduced into a reaction system; thirdly, preparation of the graphene, wherein a drying mode in the preparation process adopts freeze drying. According to the preparation method of the graphene for the heater, provided by the invention, a production process is controllable, and large-scale production can be realized; nano ions are not easy to agglomerate in the preparation process; a prepared graphene crystal is complete in structure and excellent in conductivity.

The invention discloses a reduced graphene oxide-polyurethane dual-sponge adsorption film, a preparation method therefor and an application of the reduced graphene oxide-polyurethane dual-sponge adsorption film. The reduced graphene oxide-polyurethane dual-sponge adsorption film comprises reduced graphene oxide sponge and a polyurethane hot-pressed sponge film, wherein the reduced graphene oxide sponge is uniformly filled in pores of the polyurethane hot-pressed sponge film and is physically bonded with the polyurethane hot-pressed sponge film. The preparation method comprises the following steps: (1) preparing a graphene oxide-polyurethane sponge dispersion solution; (2) carrying out freeze drying; and (3) carrying out hot-pressing film forming. The reduced graphene oxide-polyurethane dual-sponge adsorption film has the advantages that the adsorption performance is good, the efficiency of removing contaminants from water is high, large-size preparation can be achieved, the adsorption film is easy to recover and can be repeatedly used, and the like; and the preparation method is simple in process and low in cost and advantageously achieves industrial production.

The invention provides a chemical mechanical polishing solution, which comprises silicon dioxide grinding particles, azole compounds, a pH regulator and water, and is characterized in that the surfaces of the silicon dioxide grinding particles are grafted with an organic matter with sulfonic acid groups at the molecular ends. According to the polishing solution, the stability of polishing solutioncolloid is greatly improved, residues of grinding particles on the surface of a wafer in the polishing process are reduced, and the cyclic utilization rate of the polishing solution is increased.

The invention relates to a preparation method of 2, 4, 6-trimethylbenzoyldiphenylphosphine oxide and particularly relates to a method, which comprises that phosphorus trichloride, benzene and aluminumtrichloride as raw materials undergo a reaction, the reaction product undergoes a hydrolysis reaction to produce diphenylphosphine oxide, diphenylphosphine oxide and 2, 4, 6-trimethylbenzoyl chloridedirectly undergo a reaction to produce 2, 4, 6-trimethylbenzoyldiphenylphosphine oxide. The preparation method of TPO solves the problems that the raw materials are difficult to prepare, the cost ishigh, the reaction steps are many, and the yield is low. The preparation method is an eco-friendly preparation process.

The invention discloses a synthesis method of 2-trifluoromethyloxazole derivatives. The method is as follows: dissolving enamine compounds of which the beta-positions are not replaced in an anhydrous aprotic solvent; and oxidizing the 2-trifluoroacetyl in the presence of bis(trifluoroacetoxy)iodobenzene to further perform intramolecular condensation with amino, thus obtaining the 2-trifluoromethyloxazole derivatives. In the method, simple and available enamine compounds of which the beta-positions are not replaced are utilized as substrates, and a nontoxic and environmentally-friendly solid reagent, namely bis(trifluoroacetoxy)iodobenzene is utilized as a fluorinating agent; and the method has the advantages that the operations are simple, the conditions are mild, and the synthetized substituted 2-trifluoromethyloxazole derivatives are difficult to prepare by virtue of other methods, and the like.

The invention discloses a TiO2 doped UO2-10wt% Gd2O3 burnable poison and a preparation method of the TiO2 doped UO2-10wt% Gd2O3 burnable poison. The TiO2 doped UO2-10wt% Gd2O3 is prepared from the following components by weight percent: 0-0.2wt% of TiO2, 10wt% of Gd2O3 and the balance being UO2. The invention also provides the preparation method of the burnable poison. According to the method, the process is simple, the cost is low, the prepared burnable poison has excellent grain size, sintered density and thermal conductivity; TiO2 is doped in the UO2-10wt% Gd2O3 burnable poison, and the burnable poison with increased concentration of gadolinium oxide still has good sintered density, grain size and thermal conductivity.

The invention discloses a rapid growth method of large-sized graphene glass. The method comprises the following steps that 1) large-sized quartz glass is cleaned; 2) the cleaned quartz glass is placedinto a high-temperature tube furnace, wherein the temperature in a reaction cavity is 1000-1100 DEG C, and the reaction cavity is vacuumized and air is evacuated until the vacuum degree is 10 Pa or below; 3) Ar and H2 are led into the reaction cavity, ethyl alcohol steam is led into the reaction cavity after airflow is stable, and then a graphene growth process is started, wherein the growth timeis 4-30 minutes; and 4) after growth of graphene is completed, the ethyl alcohol steam is cut off, the Ar and H2 flow rate is decreased, Ar / H2 is cut off after the temperature is decreased to the room temperature, and then the large-sized graphene glass is obtained. According to the rapid growth method provided by the invention, the preparation time of the graphene glass is shortened to be 4-30 minutes from a few hours, and by adopting the rapid growth method, graphene glass of a larger size can be prepared.

The invention belongs to the field of optical film materials, and relates to a uniform and stable sol prepared by cohydrolysis of hydrated aluminum sol and organosilane and containing a needle-like whisker structure, i.e. an Al-wisker / SiO2 sol, and a method for preparing a hydrophobic anti-reflection film with high hardness and super wear-resistance by the sol. A double-sided anti-reflection filmis plated on the surface of glass by the a drawing-dipping method of the sol, the average transmittance at 400-800 nm is 96% or more after calcination at 200-250 DEG C, a contact angle is 125 degree,the pencil hardness of the anti-reflection film is 5H, and the average light transmittance decreases by no more than 0.16% and a hydrophobic angle could still maintain a hydrophobic state of 120 degree or more after 1000 cycles of mechanical wiping by ethanol cotton balls.

The invention relates to an optical anti-counterfeiting material which is characterized by comprising two fluorescent ceramic materials with chemical formulas of Sr1.995Er0.005SnO4 and Ca1.999Pr0.001Nb2O7, wherein the mass ratio of the Sr1.995Er0.005SnO4 material to the Ca1.999Pr0.001Nb2O7 material is(1: 2)-(2: 1). The invention also discloses a preparation method of the optical anti-counterfeiting material. Compared with the prior art, multi-mode anti-counterfeiting can be achieved, and then the anti-counterfeiting technology is improved.

The invention relates to a preparation method of 3-site substituted benzoyl-beta-cyclodextrin. The preparation method comprises the following steps: (1) adding potassium carbonate and beta-cyclodextrin into a DMF (dimethylfomamide) solution; (2) dissolving benzoyl chloride into DMF, dropwise adding the dissolved benzoyl chloride into the mixed solution obtained in the step (1), and maintaining the pH value of the solution to be 9-11; (3) after dropwise adding, neutralizing the solution obtained in the step (2) to be neutral; (4) performing reduced pressure distillation to dry the solution obtained in the step (3) by distillation, and drying to obtain a crude product; (5) adding the crude product into DMF, stirring uniformly, and performing reduced pressure suction filtration to obtain a filtrate; (6) concentrating the filtrate until the filtrate is saturated, dropwise adding acetone to obtain a deposit, and performing suction filtration to obtain 2-Bz-beta-CD; and (7) dissolving 2-Bz-beta-CD into a methanol solution, adding column chromatography silica gel, performing suction filtration, and drying the filtrate by distillation. According to the preparation method provided by the invention, a 2-substituted intermediate product is prepared firstly, and then a 3-substituted product is generated by virtue of 'self-transformation', so that the preparation method is economical, simple and convenient and is strong in selectivity.

The invention discloses a preparation method of multi-substituted cyclic amidine, belonging to the technical fields of chemical pharmacy and fine chemical engineering preparation. The preparation of the multi-substituted cyclic amidine is realized, namely, the preparation of multi-substituted alpha-allyl cyclic amidine is realized, the multi-substituted cyclic amidine is efficiently produced at high selectivity by using the reaction of azide and alkyne through metal catalysis and a cyclic rearrangement reaction, and a relative configuration of a product can be effectively controlled. The invention provides a new technical route for efficiently preparing a functionalized cyclic amidine derivative, and is widely applied in the fields of chemical pharmacy and fine chemical engineering.

The invention discloses a hydrogen sensor core, a preparation method thereof and a hydrogen sensor. The hydrogen sensor core comprises a semiconductor substrate, a source electrode, a drain electrode, a trench region, a dielectric layer, a hydrogen sensitive layer and a metal electrode layer which are arranged on the semiconductor substrate. The preparation method comprises the step of preparing the source electrode, the drain electrode, the trench region, the dielectric layer, the hydrogen sensitive layer and the metal electrode layer on the semiconductor substrate. The hydrogen sensor core has the advantages of being low in detection lower limit, high in sensitivity, short in response time and the like, the hydrogen sensor prepared from the hydrogen sensor core can detect the lower limit of hydrogen concentration which is very low and reaches 50 ppm, leakage of weak hydrogen can be found as soon as possible, and the effect of giving an alarm in advance is achieved; the response time is less than 60s, and the change of hydrogen concentration in the environment can be monitored in real time; the sensitivity reaches 10<5>A / A or above, and the hydrogen sensor can adapt to hydrogen detection under different pressure conditions, so that the hydrogen sensor has very high application value in the field of low-concentration hydrogen leakage detection.

The invention relates to a preparation device of a lithium battery current collector, which is used for preparing a current collector on the surface of a polymer. The device comprises a first flange interface and a second flange interface which are formed in a vacuum chamber; anion source module is arranged on the first flange interface; a magnetic filtering module is arranged on the second flangeinterface; and each rotating shaft is arranged in the vacuum chamber, each rotating shaft is in the shape of a hollow circular column, each rotating shaft is in contact with a polymer, and each rotating shaft is used for conveying the polymer to pass through the vacuum chamber. According to the invention, the material processing difficulty in the preparation process of the current collector is greatly reduced, covering and depositing metal ions on the object is performed to realize the preparation of the current collector, the thickness of the prepared current collector is greatly reduced, the current collector below 6 microns is prepared, a copper foil does not need to be calendered, and the prepared current collector is balanced in hardness and toughness, so that the current collector is not easy to tear and damage, and the prepared current collector can be produced in batches, is high in yield and is not easy to damage during surface punching.

The invention discloses a synthesis method of divergently oriented azacycles and belongs to the technical field of chemical pharmaceutics and preparation of fine chemicals. By virtue of the synthesis method of divergently oriented azacycle, polysubstituted N-allyl-3-indolal and 3-diazabicyclo[3,1,0] hexanal can be synthesized at one time; sulfonyl triazole catalyzed by metal is decomposed into metal carbine, subsequently, the metal carbine is cyclized so as to efficiently obtain two types of differently structural azacycles, namely N-allyl-3-indolal and 3-diazabicyclo[3,1,0] hexanal. The invention provides a novel technical route for efficiently preparing derivatives of functionalized N-allyl-3-indolal and 3-diazabicyclo[3,1,0] hexanal derivatives. The synthesis method of divergently oriented azacycles has a wide application range in the field of chemical pharmaceutics and fine chemicals.

The invention relates to the technical field of organic light-emitting diode manufacturing, in particular to preparation of a top-emitting organic light-emitting diode (OLED) device anode structure. The top-emitting OLED device anode structure is characterized in that four layers of thin films cover a substrate, a base compatible layer, a middle reflectivity layer, a energy level matching layer and an anode modifying layer are respectively arranged on the substrate from bottom to top, multifunctionality of an anode is achieved through adoption of the design of a multi-layer thin film structure, light-emitting efficiency of a top-emitting OLED device is obviously improved, and the service life of the top-emitting OLED device is obviously prolonged. Furthermore, due to the fact that the anode is prepared by materials which are not prone to occurrence of element diffusion, probability of occurrence of shot circuit of device pixels due to the element diffusion is reduced. Due to adoption of metallic simple substance or alloy or metallic compound, raw materials can be easily obtained and are low in price, and thin film preparation methods are various.

An analog electrode device for space charge detection of a cable insulation layer is characterized by comprising a test probe mechanism, a grounding mechanism and a target cable equivalent insulationlayer sample disposed between the test probe mechanism and the grounding mechanism, wherein shielding layers are provided on both sides of the target cable equivalent insulation layer sample; the testprobe mechanism comprises a guiding rod and a pressure equalizing ball and an electrode disposed at both ends of the guiding rod, wherein the outside of the guiding rod is provided with a tetrafluoroethylene column and a metal cavity filled with epoxy resin in sequence. The analog electrode device provided by the invention can simulate the space charge distribution information of the target cableunder operating conditions according to the structural size of the cable and the selection of the insulating material before the target cable is officially produced.

The invention discloses a synthetic method of N-sulfonyl-3,4-dihydro-2H-1,4-thiazine and belongs to the technical field of chemical pharmacy and fine chemical engineering preparation. Sulfonyl-triazole, sulfo-cyclohexane, a metal rhodium catalyst and organic acid are utilized, and the synthetic method of N-sulfonyl-3,4-dihydro-2H-1,4-thiazine compounds is rapid, efficient and universal. According to the method, reaction operation is easy and convenient, and N-sulfonyl-3,4-dihydro-2H-1,4-thiazine can be rapidly prepared just through a one-step reaction. The reaction product is novel in structure and can not be easily prepared with other methods. The reaction raw materials sulfonyl-triazole and sulfo-cyclohexane are convenient to prepare.

The invention discloses an electrolytic polishing solution for titanium and titanium alloys and an electrolytic polishing process. The polishing solution is prepared from perchloric acid with a volume fraction of 8-15% and acetic acid with a volume fraction of 85-92%. The polishing solution is convenient to obtain materials, easy to prepare and store, simple polishing equipment, easy to operate, can greatly reduce the stress on the surface of the sample, and at the same time the surface is smooth and flat, without obvious scratches and oxide films, and the recognition rate of EBSD patterns is high. Improve detection accuracy.

The invention discloses a method for synthesizing a chiral 3-amino-3-phenyl-2-hydroxy carboxylate compound. The method comprises the following steps: by taking nitrobenzyl and glyoxylate compounds as raw materials, reacting in an organic solvent under the catalysis of chiral organic alkali to prepare a 3-nitro-3-phenyl-2-hydroxy carboxylate compound, and performing reductive acylation to prepare the chiral 3-amino-3-phenyl-2-hydroxy carboxylate compound. According to the method disclosed by the invention, the raw materials are cheap and easily available, few steps are required for preparing the chiral 3-amino-3-phenyl-2-hydroxy carboxylate compound, and the final yield is high; the method is mainly applied to synthesis of a medical intermediate-chiral 3-amino-3-phenyl-2-hydroxy carboxylate compound.

The invention discloses a preparation method of a patterned polyethylene 4-thiol nickel thin film and device. The method comprises the following steps of (1) patterning a polymer coating on the surface of a substrate according to a predesigned pattern to obtain the substrate covered with a polymer template, and taking a blank part on the surface of the substrate as a designed pattern; and (2) carrying out stirring reaction on potassium methoxide and 1,3,4,6-tetrathia-cyclopentene-2,5-diketone into an organic solvent in an inert atmosphere, adding nickel chloride for reaction, carrying out filtration after reaction is completed, collecting filtrate, transferring the filtrate to an electrolytic tank, fixing the substrate covered with the polymer template on a working electrode, carrying out oxidizing coordination polymerization reaction by adopting a constant potential oxidation method and a three-electrode system, completely covering the polymer template and the surface of the blank part on the surface of the substrate with a polyethylene 4-thiol nickel thin film and removing the polymer coating to obtain the patterned polyethylene 4-thiol nickel thin film on the blank part. According to the method, the sizes, the quantity and the properties of patterning devices can be well controlled, the process is simple and the cost is low.

The invention discloses 3-azabicyclo [4,1,0] heptyl aldehydes, specifically 3-azabicyclo [4,1,0]-6-aldehyde and 3-azabicyclo [4,1,0]-1-aldehyde, and a preparation method thereof and belongs to the technical field of chemical pharmaceuticals and fine chemical preparation. A cyclopropano-aza cycle is an important organic compound; according to the method, metal catalyzed sulfonyl triazole is decomposed into metal carbene, then, metal carbene [2+1] cycloaddition reaction occurs, further hydrolysis is carried out, and then, 3-azabicyclo [4,1,0] heptyl aldehydes are obtained, so that the effective synthesis of high-added-value cyclopropano-aza cycle is realized, a new technical route is provided for preparing related derivatives, and the application in the fields of chemical pharmaceuticals and fine chemical industry is broad.

Provided is a high-tech idle-running lock core, pertaining to the technical field of lock cores. The high-tech idle-running lock core is composed of a lock core, a leaf spring, leaves, insert pieces, a locating piece, a lock core joint, T-shaped pin tumblers, a clutch piece, pin tumbler springs and a key. The leaves are located on two sides of the lock core. The insert piece and the leaf spring are arranged between the leaves and the lock core. The locating piece is arranged on one side at the low end of the leaf spring and the lock core. The T-shaped pin tumblers are arranged on one side of the lock core and vertically located on the leaves. The T-shaped pin tumblers are provided with the clutch piece and the pin tumbler springs. The lock core joint is located at the lower end of the overall lock core. The high-tech idle-running lock core is reasonable in structural design and has anti-theft performance, high safety and low lock-matching rate.

The invention relates to an electrolytic polishing solution and electrolytic polishing process used for additive manufacturing of a titanium alloy fatigue specimen. According to the electrolytic polishing solution and electrolytic polishing process used for additive manufacturing of the titanium alloy fatigue specimen, the polishing solution is composed of methanol, perchloric acid and n-butyl alcohol, the polishing process is simple in equipment and easy to operate, the surface smoothness is improved, meanwhile, the stress of the surface layer of the specimen can be reduced, and the influenceof the surface roughness and the surface residual stress in the fatigue specimen on test data is effectively avoided.

The invention discloses a method for synthesizing 3-azabicyclo[3,1,0]hexyl-1-aldehyde, belonging to the technical field of chemical pharmaceuticals and fine chemical preparation. The high-efficiency synthesis of polysubstitution 3-azabicyclo[3,1,0]hexyl-1-aldehyde can be realized, a metal-catalyzed sulfonyl triazole is used for decomposing into metal carbine, then the metal carbine is subjected to efficient cyclopropanation to obtain heterocyclic nitrogen with a unique structure, namely 3-azabicyclo[3,1,0]hexyl-1-formaldehyde. The method provides a new technological route for efficiently preparing functionalized N-allyl-3-indolal and 3-azabicyclo-[3,1,0]hexane derivatives, thus having wide application in the fields of chemical pharmaceuticals and fine chemicals.