4results 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 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.