41results about How to "Regulatory properties" patented technology

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 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 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 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 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.