33results about How to "Act as passivation" patented technology

The invention improves the extraction yield of algae essence by using cellulase for decomposing cellulose in algae after dry algae which is ground and desanded is soaked in water and subjected to colloid mill treatment, and then leads alginic acid with large molecular weight to be degraded to alginic acid with small molecular weight by using alginate lyase, thus leading effective compositions in algae to be less damaged and having high extraction yield.

The invention provides a Terahertz modulator based on a silicon-based microstructure on SOI, a manufacturing method and a modulation system. The Terahertz modulator successively comprises an Al2O3 substrate of a bottom layer, a SiO2 isolation layer, the silicon-based microstructures, and an Al2O3 passivation layer from bottom to top. The silicon-based microstructures are periodically arranged on the SiO2 isolation layer. Each silicon-based microstructure comprises a two-layer square Si-based step structure. The modulation system comprises a semiconductor laser, a laser modulator, the Terahertzmodulator, a Terahertz radiation source, and a Terahertz detector. In the invention, a reflectivity which is lower than 22% is achieved for a Terahertz wave of 0.4 THz to 0.85 THz and a minimum of 18% can be reached at 0.82 THz so that the reflectivity of a modulation device to the Terahertz wave can be significantly reduced and a utilization rate of the Terahertz wave is improved. A 64.5% modulation depth can be achieved under 808 nm laser radiation with 1200 mw power. Compared with a traditional silicon-based Terahertz modulator, a Terahertz imaging diffusion area can effectively increase aresolution and make the resolution reach above 21.9% in an imaging system.

The invention discloses preserved cherry tomato fruits and a processing method thereof. The method comprises the following concrete steps: cleaning fresh cherry tomato fruits as a raw material, processing a plurality of holes in the cherry tomatoes fruits by a perforating machine, soaking the cherry tomato fruits in a sodium pyrosulfite solution for color-protecting, sugaring, and finally, performing processes of drying, cooling and the like to prepare the finished preserved cherry tomato fruits. According to the method, an effect of passivating phenolase is achieved while the color is protected, and the browning degree of the preserved cherry tomato fruits is lowered; the sugaring and drying processes are segmentally carried out, so that the preserved cherry tomato fruits can have the color and the flavor of original fruits and also retain the shapes of the original fruits, thus having better competitive advantages than like products.

The invention discloses a method for improving the operation safety of a hydrocracking device. The hydrocracking unit at least comprises two hydrocracking catalyst beds. The method comprises the following steps: cooling to 200-340 DEG C and switching the hydrocracking feed oil with the nitrogen content of 300 to 500 ppm when the weight percentage content of nitrogen in the hydrocracking catalyst in the first hydrocracking catalyst bed is 0.15-0.35%; switching the hydrofined oil with the nitrogen content of less than 40ppm when the nitrogen content in the hydrocracking effluent is constant at 50-80ppm; simultaneously adjusting the reaction temperature of the hydrocracking section until the mass yield of the light oil of less than 360 DEG C is finally kept constant at 35-40% and the total constant time is 48-96 hours; and then adjusting to the hydrocracking reaction condition for hydrocracking reaction. By the method, the problem that the activity of part of the hydrocracking catalyst isdamaged due to frequent startup and shutdown and then the mismatching of reaction temperatures among different catalyst beds in the reactor is influenced is solved.

The invention discloses negative electrode slurry, a negative electrode plate, a lithium ion soft package battery cell, a lithium ion battery pack and application thereof. The negative electrode slurry comprises a negative electrode active material, an additive and a solvent, the negative electrode active material comprises a silicon-based composite material, and the additive comprises lithium nitrate. The negative electrode active material comprising the silicon composite material is high in energy density, lithium nitrate has relatively high reduction potential and is easy to reduce and decompose, and the decomposition product can stably coat the surface of the negative electrode active material, plays a role in passivating the negative electrode active material, can effectively inhibitcontinuous side reaction between electrolyte and the negative electrode active material, such as electrochemical reactions, so that the cycle performance of the lithium ion soft package battery cell can be improved, and the cycle life is long.

The invention discloses a rapid start-up method of a hydrocracking catalyst. The start-up method comprises the following steps: introducing raw material oil in the vulcanization process, after vulcanization is completed, adjusting a reaction temperature, and when the mass yield of light oil less than 360 DEG C is stabilized at 35-40%, adjusting to a hydrocracking reaction condition to carry out ahydrocracking reaction, wherein the hydrocracking catalyst comprises 0-10% of a molecular sieve by weight, and the molecular sieve comprises, but not limited, a Y type or a USY (Ultra-Stable Y Zeolite) type molecular sieve. The method is simple in start-up and raw material switching process, stable in operation and capable of avoiding consumption of a passivant in the start-up process and potential danger in the ammonia injection process.

The invention relates to the technical field of aluminum-based composite material, and provides an anticorrosive aluminum product and a preparation method thereof. A substrate layer is mainly prepared from the following components in parts by weight: 50 to 60 parts of aluminum powder, 20 to 30 parts of copper powder, 5 to 6 parts of nanometer zirconium dioxide, 3 to 4 parts of samarium element, 3 to 4 parts of ytterbium element and 1 to 2 parts of corrosion inhibitor. A coating layer is mainly prepared from the following components in parts by weight: 30 to 40 parts of epoxy resin, 5 to 7 parts of mesoporous SBA-15, 0.5 to 1.0 part of beta-(2,6-ditert-butyl-3-hydroxyphenyl)propionic octadecyl ester, 0.5 to 1.0 part of 2,5-ditert-butyl-3-methylphenol, 0.2 to 0.5 part of N-(fluclorolone methyl thiocarbonate)phthalimide, 0.2 to 0.5 part of benzimidazolyl methyl carbamate, 10 to 13 parts of stainless powder, and the like. The preparation method comprises the following steps of preparation of the substrate layer and the coating layer, spraying of paint and the like. The anticorrosive aluminum product has the advantages that the environment-friendly effect is realized, the comprehensive property is excellent, and the anticorrosive durability of the aluminum product is effectively improved.

The invention provides a waste residue field reclamation soil matrix which comprises, by mass, 40%-75% of original soil, 10%-50% of engineering waste residues, 3%-8% of organic fertilizer and 3%-7% ofpine needles, and the ratio of the original soil to the engineering waste residues is 1:1-4:1. Meanwhile, the invention provides a preparation method and application thereof. According to the reclamation soil matrix, a large number of waste residues in a waste residue field can be effectively disposed, growth of plants is promoted, and the survival rate is increased. The natural soil, the engineering waste residues and the pine needles in the matrix form a loose and porous soil structure, so that air permeability and moisture transmission of soil are facilitated, formation of aggregates in the soil is facilitated, and survival and propagation of microorganisms are also facilitated. The organic fertilizer can effectively improve the fertility of the soil, improve original barren engineering waste residues and natural soil, provide nitrogen, phosphorus, potassium, organic matter and other nutrients needed by growth and development of plants, play a role in passivating heavy metal contained in municipal sludge and reduce harm possibly brought by the heavy metal in the soil. Main materials are wide in source and low in cost.

The invention discloses wear-resisting alloy steel for a door handle and a preparation method thereof. The method comprises the steps that (1) alloy steel is subjected to water washing and alcohol washing and then subjected to oxygen-free calcination and then is put into an activating agent to be subjected to activating treatment; (2) the alloy steel subjected to activating treatment is subjected to primary heating heat treatment and secondary heating heat treatment in sequence; and (3) the alloy steel subjected to heat treatment is subjected to quenching and heating and then is put into a sodium chloride solution to obtain the wear-resisting alloy steel for the door handle, wherein elements in the alloy steel include, by weight, 0.25-0.55% of C, 0.15-0.35% of Si, 0.20-0.30% Mn, 0.3-0.55% of Mo, 0.15-0.4% of Mg, 0.05-0.15% of Ge, and the balance Fe; and the oxygen-free calcination temperature is 230-250 DEG C, and the oxygen-free calcination time is 3-4 h. The door handle wear-resisting alloy steel manufactured through the method has excellent mechanical properties and wear-resisting property.

The invention discloses high-hardness alloy steel for a door frame and a preparation method thereof. The method comprises the steps of (1) carrying out water washing and oxygen-free calcination on the alloy steel, and then putting the alloy steel in sldium lauryl sulfate to be subjected to activating treatment; (2) carrying out thermal treatment of primary heating and secondary heating on the alloy steel; and (3) carrying out quenching, heating and cooling on the alloy steel subjected to thermal treatment, and then, putting the alloy steel into a magnesium chloride solution, so as to prepare the high-hardness alloy steel for the door frame, wherein the alloy steel comprises the following elements by weight percent: 0.65 to 0.85% of C, 0.15 to 0.35% of Si, 0.20 to 0.30% of Mn, 0.3 to 0.55% of Mo, 0.15 to 0.4% of Mg and 0.05 to 0.15% of Ge, and the balance being Fe; the primary heating comprises the steps of increasing the temperature from 20 to 25 DEG C to 520 to 540 DEG C at the temperature increase speed of 10 to 15 DEG C/min, and keeping the temperature at 520 to 540 DEG C for 110 to 130 min; and the secondary heating comprises the steps of increasing the temperature from 520 to 540 DEG C to 700 to 720 DEG C at the temperature increase speed of 20 to 25 DEG C/min, and keeping the temperature at 700 to 720 DEG C for 60 to 80 min. According to the invention, the door frame manufactured through the method has excellent mechanical properties like high strength and high hardness.

The invention provides a CMOS-TDI image sensor and a forming method thereof. The forming method comprises the steps: providing a substrate; forming a photoelectric doped region in the substrate; forming a plurality of gate structures on the surface of the photoelectric doped region, wherein each gate structure includes a gate dielectric layer and a gate layer located on the gate dielectric layer;and performing the doping process at the interface between the gate dielectric layer and the substrate, wherein the doping process is used for reducing the defects between the gate dielectric layer and the substrate. According to the technical scheme, the doping process is performed at the interface between the gate dielectric layer and the substrate so that the defects formed by the substrate andthe gate dielectric layer are combined with the second ions in the doping process to realize play the passivation effect and thus the generation of dark current can be reduced and the image quality of the CMOS-TDI image sensor can be improved.

The invention discloses a method of double-junction thin film solar cell module and cell module thereof. The cell module is formed by connecting a plurality of battery units, each battery unit comprises a bottom battery and a top battery, wherein a patterned insulating layer and a back metal electrode layer electrically connected with the bottom battery are arranged on the bottom battery, and a patterned front metal electrode layer is arranged on the top battery, the bottom battery is a polycrystalline Ge bottom battery, and the top battery is a GaAs top cell, the layers of the bottom cells and the layers of the top cells are inverted and grown in an epitaxial manner, a tunnel junction N-type region and a tunnel junction P-type region are sequentially grown between the GaAs top battery andthe polycrystalline Ge bottom battery; an antireflection layer is formed on the front metal electrode layer and the top battery which is not covered by the front metal electrode layer. According to the manufacturing method of double-junction thin film solar cell module and cell module thereof, by adopting the inverted growth mode, the crystal quality is improved, and by adopting the method of one-time growth to complete the battery structure, the process can be simplified, and the yield of the product can be improved, in addition, by using Ge as the bottom battery, there is no need for a complicated battery structure and current transmission is improved.

The invention discloses a method for improving stable operation of a hydrocracking unit. The hydrocracking unit at least involves two hydrocracking catalyst beds. The method comprises the following steps: cooling to 200-340 DEG C and switching the hydrocracking feed oil with the nitrogen content of 300 to 500 ppm when the weight percentage content of nitrogen in a hydrocracking catalyst in the first hydrocracking catalyst bed is 0.2-0.45%; switching the hydrofined oil with the nitrogen content of less than 20ppm when the nitrogen content in the hydrocracking effluent is constant at 50-80ppm; simultaneously adjusting the reaction temperature of the hydrocracking section until the mass yield of the light oil of less than 360 DEG C is finally kept constant at 55-60% and the constant time is 24-48 hours; and then adjusting to the hydrocracking reaction condition for hydrocracking reaction. By the method, the problem that the activity of part of the hydrocracking catalyst is damaged due tofrequent startup and shutdown and then the mismatching of reaction temperatures among different catalyst beds in the reactor is influenced is solved.

The invention discloses high-strength alloy steel for a door frame and a preparing method thereof. The method comprises: (1) performing water washing on alloy steel, then performing anaerobic calcinating, and then placing in an active agent for activation processing; (2) performing thermal processing for the first time and thermal processing for the second time on the activated alloy steel in sequence; (3) quenching, heating and cooling the thermally processed alloy steel, and then placing in a magnesium chloride solution to prepare the high-strength steel for a door frame, wherein the alloy steel contains respective elements in parts by weight: 0.65-0.85% of C, 0.15-0.35% of Si, 0.20-0.30% of Mn, 0.3-0.55% of Mo, 0.15-0.4% of Mg, 0.05-0.15% of Ge and the balance of Fe, the active agent is one of sodium dodecyl benzene sulfonate, fatty glyceride and sodium glycocholate, a quenching agent used in step (3) is PAG quenching agent, and in step (3), a heating temperature is 500-520 DEG C, and time is 100-120min. The high-strength alloy steel for a door frame prepared by the method has excellent mechanical properties such as large strength and large hardness.

The invention discloses a passivation-contact-based floating-junction back-passivation crystalline silicon battery and a preparation method thereof. The crystalline silicon battery comprises a p typesilicon substrate, a tunneling oxide layer form on the back surface of the p type silicon substrate, and an n type polysilicon layer formed on the back surface of the tunneling oxide layer. The tunneling oxide layer and the n type polysilicon layer form a floating junction; and an open hole is formed in a preset position of the floating junction. In addition, the crystalline silicon battery also includes a metal electrode that is formed on the back surface of the n type polysilicon layer and is in contact with the exposed p type silicon substrate through the open hole and a first dielectric layer that is arranged between the n type polysilicon layer and the metal electrode in the open hole. According to the invention, since the tunneling oxide layer and the n type polysilicon layer can beresistant to the high temperature in metal electrode preparation without any change and can be protected from being damaged by the high temperature, the influence on the floating junction by the high-temperature sintering process is eliminated, so that the passivation effect on the crystalline silicon battery by the floating junction is improved.