41results about How to "Regulatory properties" patented technology

The invention discloses a monolithic integrated surface emitting semiconductor laser based on a super surface micro-nano structure. A super-surface micro-nano structure is combined with the active medium of semiconductor laser, the cluster coherent oscillation of the resonant unit inside the super-surface can be excited when the active material emits light in the active region. This local oscillation has high optical field binding ability and can provide positive feedback for the active layer to realize lasing. At the same time, by optimizing the structure of the super-surface micro-nano, we can control the far-field distribution characteristics of the beam, such as directional angle, phase, polarization, mode and so on. The laser structure comprises a substrate, a low refractive index layer, an active layer and a super-surface micro-nano structure. The preparation method comprises design and preparation of a light field confinement layer, a gain medium and the super-surface structure.Through the invention, the light field can be strongly localized in the near field, the far field distribution can be regulated by the arrangement mode of the structural unit, and the light field canbe directly regulated.

The invention belongs to the field of nanometer material preparation and particularly relates to a small-sized metallic oxide nano-cluster / mesoporous SiO2 nanocomposite and a preparation method thereof. The particle size and the pore diameter of every mesoporous SiO2 nanosphere carrier are 5-30 nm and 2-5 nm respectively; every metallic oxide nano-cluster refers to MoO3 or WO3 and 0.1-2 nm in particle size. A reversed-phase microemulsion method is adopted for synthesis. The preparation method of the small-sized metallic oxide nano-cluster / mesoporous SiO2 nanocomposite is simple in technology, economic and safe; the metallic oxide nano-clusters are highly dispersed on the mesoporous SiO2 carrier, the metallic oxide nano-clusters and the mesoporous SiO2 carrier are controllable in both size and shape, and accordingly the small-sized metallic oxide nano-cluster / mesoporous SiO2 nanocomposite is excellent in catalytic performance.

The invention provides a remediation method for organic matter contaminated soil. The remediation method comprises the following steps that 1, soil pretreatment; 2, continuous leaching of the soil; step 3, degradation of organic pollutants and recovery of heavy metals; and step 4, soil micro-ecological restoration. According to the invention, an elution method and a biological mud method are combined; firstly, a soil dispersing agent is mixed with the soil; soil aggregation and cementation in the leaching process are avoided; the leaching speed is increased by adopting a continuous leaching mode; meanwhile, the leaching effect is improved by compounding and combining the leaching agents; through the arrangement of tan electrostatic spinning composite filter felt, the cyclic utilization ofleacheate is realized; during soil micro-ecological restoration, an immobilized mixed degradation microbial inoculum is adopted, organic pollutants which are not eluted by leacheate and surfactants adsorbed in the soil can be degraded within 2-4 days by controlling the ventilation capacity and the stirring rate, the restoration time is short, the cost is low, the restored soil does not need to besubjected to subsequent treatment and can be directly sown, and the economic benefit is good.

The invention discloses a beaded ultrafine fiber material with a bead morphology and a preparation method thereof and belongs to the field of preparation of micro-nano materials. According to the invention, by regulating the content of silk fibroin self-assembled nano fibers in a spinning solution, effective regulation on the morphology and dimensions of beads in an electrospinning beaded ultrafine fiber material is realized. The beads in the prepared beaded ultrafine fiber material have different morphologies such as spheres, ellipsoids, spindles and slender spindles, and regulation of the width of the beads in the range of 200-2000nm, regulation of the length of the beads in the range of 500-3000nm and regulation of the length-width ratio of the beads in the range of 1.4-2.8 are realized. The beaded ultrafine fiber material disclosed by the invention can be specifically supported with medicines in different sizes to regulate behaviours of cells and also can realize gradient filtration on granules, thereby having a broad application prospect in the fields of medical and hygienic materials and filtration materials.

The invention discloses an organic silicon epoxy resin curing agent and an epoxy curing system containing the same. The curing agent can be used for curing various kinds of epoxy resin such as glycidyl ether epoxy resin, aliphatic epoxy resin and glycidyl ester epoxy resin. The curing agent is stable and difficult to volatilize; and a material obtained after the curing agent is cured with the epoxy resin does not have bubbles, has a smooth surface, has excellent electric performance and mechanical property and predominant impact resistance and thermal stability, and is applied in the field of high additional value of epoxy molding compounds for electronic encapsulation and the like.

The invention relates to the technical field of solid electrolytes, and in particular, relates to a highly conductive solid electrolyte prepared by a coprecipitation method, wherein a preparation method comprises the steps: step 1, weighing a dopant, aluminum nitrate, tetrabutyl titanate and ammonium dihydrogen phosphate, sequentially putting the raw materials into a reaction container, and continuously stirring at room temperature until faint yellow slurry is formed; step 2, slowly adding ammonia water into the faint yellow slurry and dissolving; step 3, heating the reaction container to 88-90 DEG C, and carrying out constant-temperature water bath magnetic stirring for 0.8-1.1 h, to form a white precipitate; step 4, transferring the white precipitate into a blast drying oven, and heatingto obtain a white precursor; step 5, presintering the white precursor to obtain white powder; and step 6, carrying out ball milling on the white powder, tabletting, molding and calcining to obtain asolid electrolyte sintered body. The solid electrolyte provided by the invention has an NASICON structure, small interface resistance and excellent electrochemical stability, and the particle size reaches nanoscale.

The invention belongs to the technical field of internal combustion engines, and relates to a strategy for switching spark ignition and homogeneous compression ignition, and an implementation device thereof. The implementation device comprises an electronic control unit, an air inlet pipe pressure temperature sensor, a gasoline oil supply system and a normal heptane oil supply system, wherein a gasoline injector, a normal heptane injector and a pressure temperature sensor are all mounted on an air inlet pipe. During process of combustion mode switching, the electronic control unit collects inlet air temperature and inlet air pressure inside an induction manifold, and determines the proportion of gasoline and normal heptane required by compression ignition under the condition; according to load requirements, the electronic control unit determines the opening degree of a throttle valve and circulating oil supply quantity; according to pre-determined circulating oil injection quantity and proportion of oil injection of two fuels, the electronic control unit is used for respectively adjusting oil injection pulse width of a gasoline injector and a normal heptane injector, so as to achieve switching from spark ignition to compression ignition under a burning mode. The implementation device provided by the invention is reasonable in design, has a simple structure, and is applicable to an engine burning mode switching system based on fuel design and management.

The invention belongs to the field of additive manufacturing correlation techniques, and discloses a two-phase medium pentamode material based on additive manufacturing and a manufacturing method forthe two-phase medium pentamode material. The method comprises the following steps: (1) establishing a three-dimensional CAD model of a pentamode material matrix, and guiding out the three-dimensionalCAD model of the pentamode material matrix by an STL file format; and (2) forming the pentamode material matrix by using a laser selected area melting method according to the STL file, and carrying out surface treatment on the matrix; and (3) melting and depositing a high polymer material into the matrix by a melting and depositing forming method to obtain the two-phase medium pentamode material.The two-phase medium pentamode material based on additive manufacturing is high in forming speed and high in material utilization rate; the cost is reduced; and the application range is expanded.

The invention discloses a heavy metal extraction agent microcapsule and application thereof. The heavy metal extraction agent microcapsule is composed of a hollow capsule and a heavy metal extraction agent wrapped by the hollow capsule. A method for preparing the microcapsule comprises the following steps: 2-10 parts of a monofunctional monomer, 5-15 parts of a functional polymeric monomer, 0.1-3 parts of a cross-linking agent, 0.1-2 parts of a photoinitiator or thermal initiator, 0.1-3 parts of an emulsifier and 100 parts of water are adopted to be subjected to emulsification, ultrasonic cavitation, cured forming, rinsing and drying to be prepared into the hollow capsule; by utilizing the pressure difference and the concentration gradient, the heavy metal extraction agent is diffused and permeated into the hollow capsule to obtain the microcapsule. Air bubbles released by ultrasonic cavitation and the initiator are used as a template, and the hollow capsule is formed through homogeneous emulsification, so that the preparation method saves time and labor, and the capsule integrity can be kept well. The extraction agent microcapsule can be applied to treatment of selective adsorption or desorption of heavy metal ions in water and is flexible in application way and wide in range of application.

The invention discloses a temperature-sensitive hydrogel water retaining agent , and a preparation method and an application thereof. The water retaining agent is obtained through mixing and reactinga temperature-sensitive acrylate water-soluble polymerization monomer, an initiator, a crosslinking agent and / or a copolymerization monomer. The water retaining agent has the advantages of good temperature sensitivity, realization of spontaneous regulation of the water absorption and release behaviors according to the change of the extraneous ambient temperature, fast water absorption and releaserate, saving of a lot of water resources, adjustable properties, and facilitation of large-scale promotion, and is suitable for fields of desertification treatment, gardening, and agriculture and forestry. The preparation method has the advantages of simple flow, low energy consumption, no pollution, and suitableness for large-scale industrial production.

The invention relates to a method for producing polyacrylate adhesive compounds with a narrow molar mass distribution by means of a radical polymerization and a subsequent increase of the molar masses by reacting with bis- or multi-dienyl compounds, in particular with alpha, omega-bis-dienyl compounds, in order to increase the cohesion in particular.

The invention relates to a combined biological treatment method of high-concentration COD chromium-containing electroplating cleaning wastewater. The method comprises the following steps: sequentiallytreating the wastewater through an adjusting tank, a primary filtering unit, an oxidation unit, a biodegradation unit and a post-filtering unit, discharging after reaching the standard, and directlyrecycling or deeply treating and recycling. According to the method, a heterogeneous catalytic oxidation technology and a biotechnology are organically combined, the two treatment technologies supplement each other, and aiming at the high-concentration COD chromium-containing electroplating cleaning organic wastewater which is difficult to treat, synergistic removal of heavy metals such as high-concentration COD, low ammonia nitrogen, total phosphorus and hexavalent chromium and other various pollutants is completed. The degradation-resistant wastewater is subjected to heterogeneous catalyticoxidation regulation to create a dominant environment for subsequent biological treatment of specific strains so that hexavalent chromium detoxication and organic pollutant removal are completed at the same time. Chemical agents do not need to be added in the whole treatment process, the ion concentration in the wastewater is not increased, up-to-standard discharge or reuse as enterprise production make-up water is finally realized, and purification or resource utilization of the wastewater is realized.

The invention discloses a self-host organic light-emitting small molecule material connected with a sulfur-containing non-conjugated unit by a carbonyl group, and increasing reaction sites by connecting benzene rings on two sides separately. The invention further discloses a preparation method and application of the self-host organic light-emitting small molecule material. The self-host organic light-emitting small molecule material disclosed by the invention realizes the intramolecular charge transfer function, and the sulfur-containing non-conjugate unit owned by the self-host organic light-emitting small molecule material can act as a part of a host to show high device performances in a simplified device structure. The self-host organic light-emitting small molecule material disclosed by the invention is simple in preparation method, and various target products are obtained through a series of simple reactions. Furthermore, the material disclosed by the invention is determined in molecular weight, single in structure, very high in decomposition temperature and lower in sublimation temperature, thereby being easily sublimated into a high-purity light-emitting material.

The invention belongs to the technical field of atomic layer deposition, and discloses a remote plasma atomic layer deposition system modulated by variable electric fields. The remote plasma atomic layer deposition system comprises a cavity, a quartz tube, an insulated ceramic assembly, an upper electrode plate, a lower electrode plate, an insulating pad, a heating plate, an insulating heat-conducting layer, a power supply and a relay. The remote plasma atomic layer deposition system solves the problem that a film is a polycrystal film with more defects as a film deposition rate in the prior art is far lower than a theoretically expected film deposition rate, and crystal orientation of the film obtained by atomic layer deposition is random and uncontrollable. By introducing variable uniform electric fields which can be freely set in size and magnetism into the reaction cavity, adsorption and chemical reaction active sites on the surface of the substrate are increased, and chemical reaction activity and a film coverage rate of a substrate surface are improved, so that the technical effects of realizing laminar growth of atomic layer deposition atomic accuracy resolution and controlling crystallization and doping characteristics of the film are achieved.

The invention discloses a preparation method of a hydrodesulfurization catalyst. The method comprises the following steps: (1) sequentially adsorbing an aluminum salt solution and an alkaline solutionby using a physical pore-enlarging agent, and then drying and roasting to obtain a modified physical pore-enlarging agent; (2) kneading and molding the modified physical pore-enlarging agent obtainedin the step (1) and pseudo-boehmite, drying and roasting to obtain an intermediate; (3) immersing the intermediate obtained in the step (2) into an ammonium bicarbonate solution, then carrying out sealed heat treatment, and drying and roasting the material subjected to heat treatment to obtain a modified alumina-based carrier; and (4) impregnating the modified alumina-based carrier obtained in the step (3) with a hydrogenation active metal component impregnation liquid, and carrying out drying and roasting so as to obtain the hydrodesulfurization catalyst. The hydrodesulfurization catalyst prepared by the method has the characteristics of good macromolecular diffusion performance, strong desulfurization capability, high carbon residue removal rate and the like.

An engine air inflow filling amount forming system in the technical field of internal combustion engines comprises an intake manifold, a heating pipe, a gasoline supply system and an n-heptane oil supply system. One side of the intake manifold is connected with an engine, the other side of the intake manifold is connected with the heating pipe, an oil sprayer of the gasoline supply system is connected with a first oil sprayer seat, and an oil sprayer of the n-heptane oil supply system is connected with a second oil sprayer seat. In the working process, an inflow temperature is adjusted by applying a heating system; a zirconium oxide thermal insulation layer is sprayed on pipes after a heating device and the inner wall surface and the outer wall surface of the intake manifold, heat loss can be effectively reduced, and the requirements of the engine for a heater are reduced; two groups of oil sprayers are symmetrically distributed at the tail end of the intake manifold, oil beams can be directly sprayed into an air inflow duct high in temperature, thereby being favorable for achieving uniform mixing of fuel and air; and two oil supply systems controls proportion of gasoline and n-heptane in real time and adjusts fuel property. The novel engine air inflow filling amount forming system is reasonable in design and simple in structure.

The invention pertains to the field of phase change materials, and particularly relates to a multi-stage phase change energy storage micro-nanometer composite fiber, an electro spinning preparation method and the application thereof. The multi-stage phase change energy storage micro-nanometer composite fiber prepared by the electrostatic spinning technology is a multi-channel fibrous core-shell structure which is composed of a fibrous shell, fibrous cores encapsulating phase change materials with different phase change temperature. The phase change materials with different phase change temperature are respectively and independently encapsulated in the channels. The channels of the multi-channel fibrous core are 2 or more than 2, the phase change temperature of the multi-stage phase changeenergy storage micro-nanometer composite fiber is between 0 DEG C and 80 DEG C. The phase change fiber can be used for external environments with different temperature or great-changing temperature. The micro-nanometer structure of the phase change fiber improves heat transfer efficiency of the phase change materials; the composite fiber of multi-stage phase change temperature is obtained by a one-step method; the preparation method is simple, and the maneuverability is good.

The invention provides an adsorbent and a preparation method thereof, and a chlorine dioxide preparation and a preparation method and application of the chlorine dioxide preparation, and belongs to the technical field of chlorine dioxide preparation. The preparation method of the adsorbent comprises the following steps: mixing an ammonium fluoborate solution with diatomite, and carrying out a modification reaction to obtain modified diatomite; mixing the modified diatomite, kaolin and bentonite to obtain a composite carrier; and roasting the composite carrier to obtain the adsorbent. After theadsorbent prepared by the invention is used for adsorbing a stable chlorine dioxide solution, the obtained chlorine dioxide preparation can slowly release high-purity chlorine dioxide gas, has the advantage of long-acting stability, is non-toxic and odorless, is convenient to store and transport, does not need to be activated in use, has the advantages of safety and convenience, can be applied tothe fields of disinfection, food preservation or air purification.

The invention discloses a biochar based water-retaining agent suitable for improving collapsing hill badland soil and promoting vegetation growth and a preparation method of the biochar based water-retaining agent. The biochar based water-retaining agent is prepared by steps that biochar prepared from waste shiitake mushroom sticks is dried and ground, then the biochar and a starch-acrylic acid water-retaining agent are mixed in a mass ratio of 1:4 and processed, and the biochar based water-retaining agent is prepared, and water-retention capacity analysis and soil application research for theprepared biochar based water-retaining agent are performed. The biochar based water-retaining agent can improve physicochemical properties of collapsing hill badland soil, promote plant growth and realize comprehensive utilization of waste, and has the advantages of being environmentally friendly, economical and remarkable in effect.

The invention provides a low-temperature plasma articular cavity puncture jet device. A parallel plate structure discharge device is used for discharging to generate atmospheric pressure plasma, a discharge area is in an electrode gap, the discharge gap is usually small and is in the magnitude of millimeter to centimeter, the thickness and the size of a processed object are limited by the discharge gap, which means that when the processed object is placed in the discharge gap, a dielectric layer is added between electrodes, the discharge characteristic can be affected, plasma jet does not generate plasma in the gap, and high-energy particles and active ingredients in the discharge area are conveyed to the surface of a sample under the action of airflow and an electric field. The device is simple and easy to disassemble, the generated plasma jet has many active particles, use is safe, and application processing of the device is facilitated.

The invention discloses a beaded ultrafine fiber material with a bead morphology and a preparation method thereof and belongs to the field of preparation of micro-nano materials. According to the invention, by regulating the content of silk fibroin self-assembled nano fibers in a spinning solution, effective regulation on the morphology and dimensions of beads in an electrospinning beaded ultrafine fiber material is realized. The beads in the prepared beaded ultrafine fiber material have different morphologies such as spheres, ellipsoids, spindles and slender spindles, and regulation of the width of the beads in the range of 200-2000nm, regulation of the length of the beads in the range of 500-3000nm and regulation of the length-width ratio of the beads in the range of 1.4-2.8 are realized. The beaded ultrafine fiber material disclosed by the invention can be specifically supported with medicines in different sizes to regulate behaviours of cells and also can realize gradient filtration on granules, thereby having a broad application prospect in the fields of medical and hygienic materials and filtration materials.

The invention discloses a preparation method of a sensitive thin-film with a sandwich structure. The preparation method comprises the steps that first a CoTiO3 precursor solution and an ethanol suspension of graphene oxide are prepared, then a CoTiO3 precursor thin-film is plated on the surface of a Si substrate by using a dipping-pulling method, then a GO film layer is plated on the CoTiO3 precursor thin-film, then a CoTiO3 film layer is plated on the CoTiO3 precursor / GO thin-film, and finally calcination is performed to obtain the CoTiO3 / rGO / CoTiO3 sensitive thin-film with the sandwich structure. The obtained thin-film exhibits higher sensitivity and selectivity to ethanol gas at operating conditions below 100 DEG C.

The invention discloses a preparation method of a light-induced solar self-cleaning coating. The method comprises the following steps of adding a vinyl silane coupling agent and ammonia water into water, and sufficiently stirring to form uniform liquid; coating the liquid on the surface of a tempered glass plate of the solar cell, and airing at room temperature in a dark place; uniformly coating brominated hydrocarbon on the surface of the toughened glass plate of the solar cell; irradiating for a certain time under a light source, and combining brominated hydrocarbon with the vinyl silane coupling agent through a free radical addition reaction to form a hydrophobic self-cleaning coating; and washing off unreacted micromolecular organic matters on the surface with ethyl acetate to finish the construction of the self-cleaning coating. According to the present invention, the advantages of the in-situ polymerization reaction are fully utilized, the raw materials are saved, and the cost isreduced; the properties of the hydrophobic coating on the surface of the solar cell can be conveniently regulated and controlled by using different alkyl halides.

The invention discloses a collagen material for promoting stem cell expansion and stemness maintenance and a preparation method thereof. Firstly, the invention provides the preparation method of the collagen material, including the following steps: (1) taking cattle fascia tissues, removing muscle and fat on the surfaces of the fascia tissues, and cleaning the fascia tissues with water; (2) placing the fascia tissues in liquid containing tributyl phosphate to be soaked; (3) placing the fascia tissues in water to be soaked and cleaned; (4) placing the fascia tissues in a NaCl solution to be soaked; (5) placing the fascia tissues in water to be soaked and cleaned; (6) placing the fascia tissues in a surfactant solution to be soaked; (7) placing the fascia tissues in water to be soaked and cleaned; (8) placing the fascia tissues in a NaOH solution to be soaked; (9) placing the fascia tissues in water to be soaked and cleaned; (10) carrying out freeze-drying; (11) dissolving the freeze-dried tissues in an acetic acid solution; (12) carrying out dialysis; and (13) carrying out freeze-drying to obtain the collagen material. The invention also provides an application of the collagen material in the culture of stem cells. The collagen material provided by the invention has a great application and popularization value for the culture of stem cells.

The invention belongs to the technical field of photoelectric materials and discloses a method for improving the bonding strength of metal-organic decomposition silver ink. The method comprises the following steps of conducting ultrasonic cleaning and drying on a substrate; printing a preset pattern on the substrate through MOD silver sink by selecting the 40-micron ink droplet spacing thorough anink-jet printing method under the indoor temperature to form a liquid-state silver film; conducting heat curing on the liquid-state silver film at 200 DEG C for 20 min to obtain a silver conductive film. The bonding strength of the silver film formed by the MOD silver ink and the glass substrate is improved under the condition of not changing ink components by adjusting the ink droplet spacing ofink-jet printing and the specific heat curing temperature. Through the method, there is no need to change the formula of the silver ink and adjust the nature of the silver ink. The method is simple and easy to implement, and the time and material cost are reduced.

The invention discloses an organic silicon epoxy resin curing agent and an epoxy curing system containing the same. The curing agent can be used for curing various kinds of epoxy resin such as glycidyl ether epoxy resin, aliphatic epoxy resin and glycidyl ester epoxy resin. The curing agent is stable and difficult to volatilize; and a material obtained after the curing agent is cured with the epoxy resin does not have bubbles, has a smooth surface, has excellent electric performance and mechanical property and predominant impact resistance and thermal stability, and is applied in the field of high additional value of epoxy molding compounds for electronic encapsulation and the like.

The invention relates to a high-dispersion supported palladium / tungsten carbide catalyst and a preparation method thereof. The preparation method comprises precursor solution preparation, high temperature calcining, template etching, and dipping reduction loading with palladium. The prepared high-dispersion supported palladium / tungsten carbide can be used as an electrocatalyst and is a direct formic acid fuel cell anode electrocatalyst. The high-dispersion supported palladium / tungsten carbide catalyst has good stability, a narrow particle size dispersion range and a high catalyst utilization rate, prolongs a catalyst service life and reduces a fuel cell production cost. The preparation method solves the problem that the traditional preparation method has poor tungsten carbide dispersion effects and easily causes agglomeration so that specific surface area is reduced and a catalyst utilization rate is reduced.