12results about How to "Large reaction interface" patented technology

A laser-plasma synergistic surface treatment method for CFRP / titanium alloy heterojunctions belongs to the field of heteromaterial bonding technology. First, nanosecond pulsed lasers are used to etch the surfaces of CFRP and titanium alloy to be bonded, constructing a micro-nano composite structure. Then, atmospheric pressure cold plasma is used to activate the etched surfaces, grafting polar functional groups. Finally, the two are bonded and cured using an adhesive. This invention achieves a dual enhancement effect of "mechanical interlocking" and "chemical bonding" by organically combining "laser etching to construct micro-nano physical structures" and "plasma activation to introduce chemical functional groups," significantly improving the interfacial bonding strength of CFRP / titanium alloy heterojunctions. Compared with single treatment methods, this invention can increase the joint shear strength by more than 38%, and the failure mode changes from interfacial failure to cohesive failure. It has advantages such as environmentally friendly process, good controllability, and significant effects, and has broad application prospects in aerospace, high-end equipment manufacturing, and other fields.

The utility model provides a kind of micro-nano ozone oxidation wastewater treatment device, it is related to wastewater treatment technical field, including cabinet, the two sides inner wall of cabinet are uniformly connected with two trapezoidal long plate, the top inner wall of cabinet and the bottom of trapezoidal long plate are equally spaced and installed with ultraviolet lamp, the two side walls of cabinet and located above trapezoidal long plate are all equipped with square hole, the side wall of cabinet and located at square hole are all fixedly connected with ring plate.The utility model in the present application, liquid pump drives wastewater circulation, reciprocating flow in cabinet by liquid suction pipe and liquid outlet pipe, cooperate trapezoidal long plate guide, wastewater spreads on the plate and flows, ultraviolet lamp irradiates from top, plate bottom multidimensional, covers deep layer wastewater, oxidation of refractory substance is more thorough, reflector enhances ultraviolet reflection, driving motor, fan blade accelerates gas-liquid exchange, ozone and wastewater are fully integrated, micro-nano bubble expands reaction interface, improves oxidation efficiency, and COD / TOC removal rate is significantly improved.

The application provides a germanium ingot refining device based on fluorinated salt assistance and reduction atmosphere coupling, and relates to the field of metal smelting, comprising a furnace body, a closed refining reaction cavity is formed in the furnace body, an upper reaction zone and a lower reaction zone are arranged in the furnace body; a reduction gas introduction joint is connected to the top of the furnace body and connected with an external gas supply system, and is used for introducing a reducing atmosphere into the lower reaction zone; a fluorinated salt feeding component is arranged on one side of the furnace body; a mixing mechanism is arranged in the middle of the furnace body; and an exhaust system is connected to the top of the furnace body. The application realizes that the fluorinated salt solution is uniformly sprayed in the form of atomization on the surface of GeO2 raw materials or molten germanium, and solves the problems of uneven addition of fluorinated salt, small contact area and low reaction efficiency in the prior art. The atomization spraying greatly increases the reaction interface, so that the fluorination reaction is more sufficient and fast, and then the stirring of the mixing mechanism is matched, so that the reaction rate is further improved.

The invention relates to the technical field of steel smelting, in particular to a process for improving the blast furnace vanadium recovery rate. Comprising the following steps that a, vanadium-titanium pellets and sintered ore are selected; b, the vanadium-titanium pellets and the sintered ore are fed into a blast furnace to be smelted; c, in the blast furnace smelting process, adjusting the alkalinity of blast furnace slag, the magnesium-aluminum ratio and the physical heat and chemical heat of molten iron; and d, the molten iron with the high vanadium content is separated out, and follow-up treatment is conducted to extract a vanadium product. According to the process, the vanadium recovery rate of the blast furnace is remarkably increased by accurately controlling the vanadium input amount of the raw material entering the furnace and key parameters such as physical heat and chemical heat of molten iron. The process not only improves the reduction thermodynamic and dynamic conditions of vanadium, but also reduces the blast furnace slag amount and the loss of vanadium in the blast furnace slag, thereby greatly improving the recovery rate of vanadium.

The present invention relates to the technical field of lead-acid batteries, and discloses a negative electrode additive for lead-acid batteries and a preparation method thereof. The negative electrode additive of the present invention is a composite material obtained by compounding SnO2, COF and carbon nitride nanotubes, wherein the composite material is SnO2@COF@porous carbon nitride nanotubes, wherein the amount of the negative electrode additive added is 0.25% of the mass of the negative electrode lead powder of the lead-acid battery; the addition of SnO2@COF@porous carbon nitride nanotubes effectively improves the sulfation phenomenon of the negative electrode of the lead-acid battery, improves the high-rate partial charge state of the lead-acid battery, thereby improving the cycle life of the battery, and at the same time, also improves the hydrogen evolution overpotential of the negative electrode plate, reduces the precipitation of hydrogen, thereby effectively alleviating the dehydration of the electrolyte, the increase of the internal pressure of the battery and the impact on the electrode plate, which is conducive to maintaining the stability of the electrode plate and the battery, thereby improving the use performance of the battery.

The invention discloses an aluminum ion battery which comprises a positive electrode, a negative electrode, a diaphragm and electrolyte, the negative electrode is formed by assembling aluminum sheets, the positive electrode is made of a cobalt disulfide / carbon micro-nano fiber composite material, the diaphragm is a whatman glass fiber diaphragm, and the electrolyte is prepared from anhydrous aluminum chloride and 1-ethyl-3-methylimidazole chloride in a molar ratio of 1.3: 1. The cobalt disulfide / carbon micro-nano fiber is used as a self-supporting adhesive-free electrode, so that side reaction of electrolyte and an adhesive is avoided, and the cycling stability of the battery is improved; the carbon fiber is used as a supporting substrate, so that the electrode structure damage in the circulation process is relieved; the cobalt disulfide nanoparticles uniformly distributed on the surface of the fiber form a three-dimensional conductive network structure, so that a reaction interface is increased, an ion transmission dynamic potential barrier is shortened, charging and discharging can be performed under a high-current condition, and feasibility is provided for developing an aluminum ion battery with low cost and good safety performance.

The invention discloses a high-performance two-dimensional platinum-cerium cluster catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts. According to the invention, (NH4) 2Ce (NO3) 6 and Pt (NO3) 2 are used as precursors, dihydrazine oxalate is used as a combustion improver, and the FC-Pt / CeO2 catalyst is synthesized by a solution combustion method. According to the present invention, the synthesized catalyst has the unique flat cluster structure, and is different from the traditional body cluster catalyst, the FC structure provides the wide reaction interface, such that the desorption of NH3 and the product thereof is promoted, and the NH3 oxidation activity of Pt on CeO2 is substantially improved; the method not only optimizes the low-temperature activation of NH3, but also effectively converts the generated nitrous oxide (N2O) into nitric oxide (NO), and further participates in enhancing the selective catalytic reduction process to generate N2, thereby improving the overall NH3 oxidation efficiency. Meanwhile, compared with the existing commercial catalyst, the catalyst has excellent water resistance.

The invention discloses a cobalt disulfide / carbon micro-nano fiber composite material, which is a composite material formed by in-situ growth of cobalt disulfide nano-particles with uniform size and uniform distribution on the surface of carbon fiber. The cobalt disulfide / carbon micro-nano fiber composite material prepared by the invention is used as an adhesive-free electrode, side reaction of an electrolyte and an adhesive is avoided, and the cycling stability of a battery is improved.

The invention belongs to the field of energy storage materials, and specifically relates to a porous carbon, a composite material, a diaphragm modification material and its application, a porous carbon prepared by a carbonization-activation method from agricultural waste, and metal sulfide particles composited with the porous carbon by a loading-annealing method. By coating the obtained material on the surface of a commercial diaphragm to obtain a diaphragm modification layer, in lithium-sulfur and sodium-sulfur batteries, the "shuttle effect" of polysulfides can be suppressed by a capture-catalytic conversion mechanism, thereby increasing the life of the battery; in lithium-ion batteries, lithium metal batteries, and sodium-ion batteries, the wettability of the electrolyte can be increased, the ion flux can be uniform, and the generation of dendrites can be effectively prevented from piercing the diaphragm. The present invention is simple to operate, and can simultaneously achieve the disposal and high-value utilization of agricultural waste, providing a new idea for the disposal of organic solid waste and the research and development of high-performance secondary batteries.

The invention relates to a magnetic fluorescent nano-film probe as well as a preparation method and application thereof. The probe comprises a magnetic substrate film layer and a quantum dot shell layer which are sequentially arranged in the stacking direction. The quantum dot shell layer is of a multi-layer laminated structure formed by alternating quantum dot layers and third cationic polymer interlayers, and the first layer and the last layer in the laminating direction of the laminated structure are the quantum dot layers independently; and aminophenylboronic acid is coupled to the surface of one side, opposite to the graphene oxide nanosheet layer, of the last quantum dot layer. The magnetic fluorescent nano-film probe has strong fluorescence performance, has the capability of capturing various virus glycoproteins, and can quickly and accurately detect various viruses.

The invention provides a fluidized repair roasting regeneration method for a new energy lithium iron phosphate battery positive electrode material, and belongs to the technical field of resource utilization of waste lithium ion batteries. Comprising the following steps: firstly, crushing and screening a positive plate obtained by discharging, disassembling and stripping the waste lithium iron phosphate battery to obtain lithium iron phosphate positive powder, and roasting the lithium iron phosphate positive powder; carrying out wet grinding to obtain slurry; and granulating and drying the slurry to obtain porous spherical precursor particles, carrying out fluidized high-temperature regeneration roasting, washing with water, and drying to obtain the high-performance new energy lithium iron phosphate battery positive electrode material. The new energy lithium iron phosphate battery positive electrode material prepared by the invention not only has high first discharge specific capacity and good cycle performance, but also has higher tap density and better processability due to the spherical morphology and proper particle size distribution, and can be directly used for preparation of new batteries.

The invention belongs to the technical field of high polymer material depolymerization, and particularly relates to a device for efficiently depolymerizing polycaprolactone to recover high-purity epsilon-CL and a depolymerization method based on the device. The device comprises a kettle cover and a kettle body, a heat insulation layer is arranged between the kettle cover and the kettle body, holes penetrating up and down are distributed in the heat insulation layer, and a heat insulation layer water inlet and a heat insulation layer water outlet are formed in the outer side of the heat insulation layer; a material opening, a kettle cover water inlet, a kettle cover water outlet and a gas outlet are formed in the kettle cover; a stirring paddle which penetrates through the heat insulation layer and extends into the kettle body is connected into the kettle cover; a baffle is embedded in the inner side of the kettle body, a discharge port is formed in the lower part of the kettle body, and the outer side of the kettle body is connected with an oil heating sleeve. According to the device disclosed by the invention, aiming at the characteristics of PCL depolymerization reaction, efficient depolymerization of PCL is realized by arranging a heat insulation layer and combining with design of precise temperature control and the like, so that epsilon-CL (99.9%) with high yield and high purity is obtained, the epsilon-CL is directly repolymerized, and complete conversion can be realized, so that regenerated PCL with excellent mechanical properties can be obtained.