69results about How to "Short aging time" patented technology

The invention provides a synthetic method for NaY zeolite with a high silica-alumina ratio. The method comprises the main steps: according to the proportioning requirement of a directing agent to uniformly mix a silicon source, an aluminium source and water, and ageing at 15 DEG C-60 DEG C for 0.5-120 h, so as to prepare the directing agent; according to the proportioning requirement of a gel reaction mixture to adding the directing agent and an alkaline solution into a silicone source at 10 DEG C-90 DEG C, stirring for 1 h-80 h, and stirring uniformly to obtain the gel reaction mixture; performing crystallization on the gel reaction mixture at 80-120 DEG C for 10-50 h, and then filtering, washing and drying to prepare NaY zeolite. The method does not employ a template, the preparation of the directing agent is mild in temperature, NaY zeolite with high crystallization degree and the high silica-alumina ratio is synthesized at a relatively short crystallization time. Also the method is capable of replacing conventional production technology without changing current apparatuses for industrial production, and has great important meaning on improving performances of catalytic cracking catalysts.

A system and method for determining the early life reliability of an electronic component, including classifying the electronic component based on an initial determination of a number of fatal defects, and estimating a probability of latent defects present in the electronic component based on that classification with the aim of optimizing test costs and product quality.

The invention relates to a method for preparation of an antioxidant composite coating on a carbon fiber surface. The antioxidant composite coating is an Al2O3-SiO2-TiO2 composite coating. The method is sol-gel method, which includes: composite sol preparation, carbon fiber surface activation treatment, coating, drying and heat treatment. The composite sol is prepared under room temperature, and the preparation process includes: firstly preparing a water-alcohol solution of tetraethyl orthosilicate and acetic acid into a mixed solution A, then pouring the mixed solution A into an alcohol solution of butyl titanate to prepare a mixed solution B, then under stirring, pouring an alcohol solution of aluminum nitrate nonahydrate into the mixed solution B to prepare a mixed solution C, finally adding an alcohol-water mixed solvent into the mixed solution C, and performing stirring to obtain the composite sol. With the ternary composite sol prepared by the method provided by the invention, a uniform and complete antioxidant coating with good adhesion and thickness within 3 micrometers can be prepared on the carbon fiber surface.

The invention discloses an Al-Mg-Si as-cast aluminum alloy and an aging treatment process thereof. The as-cast aluminum alloy is prepared from the following components in parts by weight in a mixing way: 6-8 parts of Mg, 4-6 parts of Si, 60-80 parts of Al, 2-3.5 parts of Fe, 0-1 part of Cu, 0-1 part of Zn, 0-1 part of Mn, 0-1 part of Ti and 0-1 part of Cr. The aging treatment process of the Al-Mg-Si as-cast aluminum alloy comprises the following steps: firstly performing solution treatment on the Al-Mg-Si as-cast aluminum alloy at 520-530 DEG C, performing low-temperature pre-aging treatment at 140-160 DEG C so that the aluminum alloy is in an under-aged state and the precipitated phases are mainly of solute atom aggregations, namely GP zones, and the precipitation density of the GP zones is increased a period of time after being under-aged state; and further increasing the aging temperature to 200 DEG C to perform high-temperature aging so that the number of the GP zones converted into beta' strengthening phases is increased, thereby effectively improving the mechanical property of the aluminum alloy.

The invention discloses a preparation method of a high high-strength nanocrystalline type medical Beta titanium alloy for orthopaedic implanting. The titanium alloy is the Ti-Nb-Mo-Sn alloy prepared by the following steps in sequence: treating the alloy ingredients in a vacuum arc melting furnace, and sequentially carrying out the processes of quickly solidifying, rolling at a low temperature and instantaneously ageing at a high temperature, thus obtaining the large-dimension nanocrystalline type titanium alloy. The alloy has the average crystalline dimension less than 60 nanometers, and has strength of 1200 to 1600MPa, plasticity of 15 to 20%, elasticity modulus of 40 to 60 GPa, and super-elasticity recovery strain of 4 to 5%. According to the preparation method, the treatment processes of quick solidifying, low-temperature rolling and instantaneous ageing are creatively combined to treat the titanium alloy, thus, the purpose of unifying high strength, excellent processing performance, low elasticity modulus and excellent super-elasticity performance is realized, and high technological effect and huge potential economic value are brought.

The invention discloses a high-strength non-evaporating brick and a preparation method thereof, belonging to the technical field of building materials. The non-evaporating brick comprises the following components in percentage by weight: 30-45 unground grain slag, 30-45 heavy slag, 10-20 fly ash, 2-5 industrial by-product gypsum, 1-5 activity excitant and 5-14 water. The preparation method of thehigh-strength non-evaporating brick is simple, has low production cost and produces non-evaporating bricks with strong frost-resistant performance, low drying shrinkage value and high strength over MU15.

The invention relates to an aging method of cylindrical lithium ion batteries, which comprises the following steps: charging a battery cell to increase the voltage to that of an initial battery cell; and placing the battery cell in an environment with the preset aging temperature. By adopting the high temperature aging method, the regenerative process of forming a solid electrolyte interface (SEI) is promoted more effectively to form a more even and stable SEI film, and a battery cell the interior microcircuit of which has low voltage can be better picked out. Compared with the existing methods, the aging time is shorter, the temperature is higher, and compared with the normal battery cells, the voltage of the battery cell with interior micro short circuit is more obvious, so that the battery cell with low voltage can be picked out more easily, thereby shortening the period, saving the energy source and increasing the economic benefits.

The invention discloses a lithium iron phosphate power battery and a preparation method thereof. Secondary particle lithium iron phosphate, which is agglomerated by primary nano particles and has the D50 value of 1-3 mu m, is taken as a positive active material; a negative electrode utilizes high-interlayer-spacing synthetic graphite with an amorphous carbon coating structure; a diaphragm utilizes a high-air-permeability diaphragm with PP, PE and PP as a base material, and the air permeability is not greater than 300 s/100 ml; an electrolyte liquid comprises the following ingredients: 25-35% ethylene carbonate (EC), 5-10% propylene carbonate (PC), 25-35% ethyl methyl carbonate (EMC) and 10-15% diethyl carbonate (DEC); lithium salt is a composite conductive salt of lithium hexafluorophosphate and lithium difluoroborate, and the concentration of the lithium salt is 10-15%; and the additive comprises butanedinitrile, ethylene sulfite and fluorinated hydrocarbon. Square aluminum shell lithium-ion battery positive and negative electrode plates are subjected to treatment of winding, core-winding, cover plate welding, shelling, baking, laser welding, secondary baking, injecting, forming, air exhausting, steel ball pressing, volume dividing and 45-75 DEG C high-temperature aging for 120-24 hours at a high temperature to form the film.

The invention discloses a nickel-cobalt-manganese-lithium power battery and a manufacturing method thereof. A positive electrode active substance with the diameter 50 being 8-10 microns adopts nickel-cobalt-manganese-lithium, and a negative electrode adopts one or two of a middle-phase carbon microsphere, artificial graphite and composite graphite; a diaphragm adopts a three-layer composite diaphragm of which the surface is coated with Al<2-x>BxO3 (x=0.02-0.1), namely an Al<2-x>BxO3/PP/PE/PP high-security ceramic diaphragm, wherein B is one or several of alkaline-earth metal ions, rare earth metal ions and transitional metal ions; electrolyte consists of 25-30 percent of acid-containing vinyl ester, 5-10 percent of propylene carbonate (PC), 25-30 percent of fluorobenzene (FB) and 10-15 percent of diethyl carbonate (DEC); lithium salt is lithium hexafluorophate (LiPF6) with the concentration being 10-12 percent; an additive is vinylethylene carbonate (VEC), sulfuric acid and vinyl resin, fluorinated hydrocarbon, biphenyl, maleate and maleimide and accounts for 10 percent of the total amount of the electrolyte; positive and negative plates of a profile aluminum shell lithium ion battery are subjected to winding, core lapping, cover plate welding, feeding into a shell, baking, laser welding, secondary baking, liquid injection, formation, gas extraction, steel ball pressing, partial containing, high-temperature aging under 45-75 DEG C and high-temperature heating for 120 hours to 24 hours for film forming.

An ageing process capable of producing an aluminum alloy with better mechanical properties than possible with traditional ageing procedures. The ageing process employs a dual rate heating technique that comprises a first stage in which the aluminum alloy is heated at a first heating rate to a temperature between 100 and 170° C. and a second stage in which the aluminum alloy is heated at a second heating rate to a hold temperature of 160 to 220° C. The first heating rate is at least 100° C./hour and the second heating rate is 5 to 50° C./hour. The entire ageing process is performed in a time of 3 to 24 hours.

The invention discloses an aluminum alloy building formwork mainly comprising, by mass, 0.4%-1.0% of Si, 0.8%-1.3% of Mg, 0.05%-0.2% of Cu, 0.001%-0.15% of Mn, 0.2%-0.7% of Fe, less than or equal to 0.25% of Zn, 0.001%-0.1% of Cr, 0.03%-0.15% of Ti and the balance Al and inevitable impurities. The content of the inevitable impurities is less than or equal to 0.15%. Correspondingly, the invention further discloses a preparation method of the aluminum alloy building formwork. The aluminum alloy building formwork is excellent in mechanical property, the extrusion speed can reach 8-10 m/min, and the production efficiency is high.

The invention discloses a casting process of aluminum alloy ingots for ships and warships. The process comprises the following steps that A, alloys are smelted to obtain aluminum alloy melts; B, the aluminum alloy melts are subjected to counter gravity casting, and the aluminum alloy ingots are obtained; and C, the obtained aluminum alloy ingots are sequentially subjected to homogenization, solidsolution treatment and aging treatment, and the aluminum alloy ingots for the ships and warships are obtained. The process can obtain the aluminum alloys with the excellent comprehensive properties like tensile strength, yield strength, ductility and exfoliating corrosion resistance, solves the problems that when existing aluminum alloys are applied on ships, the aluminum alloys are poor in corrosion resistance and low in intensity, and accordingly prolonging the service life of the ships in complex and atrocious environments of the ocean.

The invention relates to a preparation method of a Y molecular sieve. The preparation method includes mixing a silicon source with an aluminum source, adding oxygen-containing organic matter and water into the mixture, and ageing the mixture at the temperature of 15-60 DEG C for 1-60 hours to obtain a guiding agent; adding the guiding agent, an alkaline solution and the water into the silicon source at the temperature of 10-90 DEG C, stirring for 1-80 hours, adding the aluminum source, and stirring evenly to obtain a gel reaction mixture; subjecting the gel reaction mixture to microwave heating, increasing the temperature to 80-120 DEG C, performing crystallization for 10-60 minutes, and performing filtering, washing and drying to obtain a Y molecular sieve product. By the preparation method, the Y molecular sieve with relative crystallinity of 80-85% and SiO2/Al2O3 mole ratio of 4.8-5.2 can be synthesized in 10-60 minutes.

The invention discloses a refreshing perfume formula. The perfume is composed of raw materials of a lavender oil, a mint oil, camphor, an essence, an evening primrose absolute oil and ethanol. The refreshing perfume formula is reasonable and simple, can be used immediately after being prepared, has short alcoholization time, pure and refreshing fragrance and lasting fragrance, has efficacies of diminishing inflammation, relieving itching, raising spirit and refreshing consciousness, and is widely loved by the people.

The invention discloses an electrochemical rapid hydrogen diffusion method for large forgings. A forging as an anode is arranged in an electrolytic cell of an electrochemical hydrogen expansion device, an electrolyte is stored in the electrolytic cell and submerges the forging, the electrolyte is a sodium hydroxide solution having a concentration of 0.05 to 0.4 mol/L, the electrolyte has a temperature of 0-100 DEG C, a power supply is started and applies polarization constant potential of 0.1-5V/dm<2> to the forging so that the forging is polarized, in the experiment, a reference electrode isused as a zero potential point, the voltage is the potential difference relative to the zero potential point, the current change of the anode is observed and recorded and when the current density is less than a certain value of 0.5 micro-A/cm<2>, the reaction is finished. The method has the advantages of simple processes, convenient operation, easy control, energy saving, short aging time, low temperature and low energy consumption.

The invention relates to a rapid aging and perfuming method for threaded dried tangerine or orange peel. The water content of dried threaded dried tangerine or orange peel is controlled within 13%, the dried and cooled threaded dried tangerine or orange peel is put into a sealed container B, Yunnan Puer tea of a same mass weight is put into a container A, oxygen or pure air is continuously introduced from one end of the container A, gases are discharged from the other end of the container A, discharged gases of t he container A are introduced from one end of the container and are discharged from the other end of the container B, then the air pressure in the container A and the container B is 0.15-0.25MPa higher than the atmospheric pressure, the time for completely exchanging the gases inthe container A with the container B is 60-90 minutes, the treatment time of the threaded dried tangerine or orange peel in the container B is 4-6 months, and thus threaded dried tangerine or orange peel which is good in aging quality and has the perfume with adsorbed fragrance of the Yunnan Puer tea is obtained. Compared with the prior art, the method has the advantages that frequent movement isnot needed, the aging time is short, the aging quality is ensured, and the perfume adsorbs the fragrance of the Yunnan Puer tea.