A COF@hydromagnesite composite material and its preparation method and application are disclosed. The preparation method of the composite material includes the following steps. Firstly, diisocyanate organic matters are used as a modifier to carry out chemical reaction with the hydromagnesite powder to obtain modified hydromagnesite powder particles. Secondly, tris(4-aminophenyl)amine and 2,5-dihydroxyterephthalaldehyde are adopted as reaction monomers for reacting to obtain the Covalent Organic Framework (COF) material. And finally, taking modified hydromagnesite powder particle as a core and COF as a shell, the COF@hydromagnesite composite material is prepared. The COF@hydromagnesite composite material synthesized by the method disclosed by the disclosure is simple in preparation process, high in stability and good in selectivity, which can be used for adsorption treatment of lead ions in water.
B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
B01J 20/30 - Processes for preparing, regenerating or reactivating
A smart water management method and system based on big data. The system comprises sensor assemblies, a server, and a management terminal; each water pipe of a water pipe network is provided with a plurality of detection points; the number of the sensor assemblies is consistent with the number of the detection points, and the sensor assemblies are in one-to-one correspondence with the detection points; the sensor assemblies are arranged at the corresponding detection points; a same water pipe is provided with at least two detection points, and every two adjacent detection points are at least spaced by a preset distance. According to the method and system, the flow value of each section of a water pipe can be acquired in real time on the basis of a liquid flow sensor, whether the water pipe leaks or not is then monitored in real time on the basis of the real-time flow value, a leakage point of the leaked water pipe is accurately located, and the location of the leakage point is sent to the management terminal, thereby solving the problem in existing solutions that leakage of a water pipe cannot be found in time.
The present invention provides an ultrafine modified hydromagnesite powder, and a preparation method and application thereof. The preparation method comprises the following steps: drying ultrafine hydromagnesite, then adding a certain amount of organic dispersion reagent, isocyanate compound and catalyst, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain powder 1; taking the powder 1, a certain amount of organic dispersion reagent and fatty amine, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain the ultrafine modified hydromagnesite powder. The powder is mixed with polyethylene and an auxiliary agent, and extruded for granulation at 160-200° C. to obtain polyethylene composite material. The material has excellent tensile strength and flame retardant property.
A method for preparing modified calcined kaolin particles with surface amphiphilicity. The method includes the steps of drying and sieving the calcined kaolin particles, adding ethanol, and stirring to obtain a suspension A, preparing an ethanol solution of a vinyl silane coupling agent, and stirring for a period of time at a certain temperature to obtain a solution B, dripping the solution B into the solution A, and stirring for a period of time at a certain temperature to obtain a suspension C, reducing the temperature of the suspension C, introducing nitrogen, adding a certain amount of sulfhydryl compound, stirring for a period of time at a certain temperature to obtain a suspension D, filtering, washing and drying to obtain the modified calcined kaolin particles.
1222222222 wide splitting automatic detection solution. The present invention uses said process to automatically detect second heart sound wide splitting, and uses actual data to verify and analyze the method provided by the present invention.
A Block-Type structured diamond grinding wheel with adaptive supply of instantaneous Cooling, includes a grinding wheel substrate and several grinding wheel units, each including an execution mechanism, a push mechanism, and an instantaneous Cooling mechanism. Various structured patterns are provided on an upper surface of the grinding unit in the execution mechanism, and a heat sink is disposed at a lower surface. During operation, a tangential grinding force generated by the grinding unit and a workpiece presses a sprayer to spray nano fluid into an operating region, to implement instantaneous Cooling of grinding wheel. When wear occurs in a grinding unit of a grinding wheel, a corresponding grinding unit may be replaced to extend the service life of the grinding wheel, and production costs are reduced. A special surface structure of the grinding unit further enhances a cooling effect, thereby improving a surface quality of a workpiece.
B24D 5/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with cooling provisions, e.g. with radial slots
B24D 5/06 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with inserted abrasive blocks, e.g. segmental
7.
GRINDING METHOD USING NANOLAYER-LUBRICATED DIAMOND GRINDING WHEEL BASED ON SHOCK WAVE CAVITATION EFFECT
The present invention provides a nanolayer-lubricated diamond grinding wheel grinding method based on a shock wave cavitation effect. In the method, after a gas pressure regulation valve is turned on, a shock wave generated by an acceleration tube pushes nanoparticles to move forward, and the nanoparticles are then accelerated by a small de Laval nozzle to acquire a high initial velocity. One wave source of a shock wave speed-increase module generates a high-frequency high-strength shock wave, to impact nanoparticles with an initial velocity, to enable the nanoparticles to be continuously accelerated downward in an axial direction of a large de Laval nozzle, until the nanoparticles are embedded on a grinding wheel surface at a maximum speed to form a nanolayer. The other wave source is used to clean impurities on the grinding wheel surface. In a processing process, the nanoparticles of the nanolayer are autonomously released in a core grinding region, to implement self-lubrication and cooling inside the grinding region. This method significantly enhances lubrication and cooling effects and satisfies the green development idea.
B24B 55/03 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant designed as a complete equipment for feeding or clarifying coolant
B24C 5/08 - Devices for generating abrasive blasts non-mechanically, e.g. of metallic abrasives by means of a magnetic field
8.
BLOCK TYPE STRUCTURED DIAMOND GRINDING WHEEL HAVING ADAPTIVE SUPPLY AND INSTANTANEOUS COOLING FUNCTIONS
A block type structured diamond grinding wheel having adaptive supply and instantaneous cooling functions, comprising a grinding wheel base body (1), an actuating mechanism (2), a propelling mechanism (3), and an instantaneous cooling mechanism (4). The upper surface of a grinding unit (2.1) in the actuating mechanism has multiple structured patterns, and the lower surface is provided with a cooling fin (2.4). During working, a sprayer (4.1) is squeezed by tangential grinding force generated by the grinding unit and a workpiece, to spray a nanofluid to a working area so as to achieve instantaneous cooling of the grinding wheel. The grinding wheel is simple in structure; when the grinding unit of the grinding wheel is worn, the service life of the grinding wheel can be prolonged by replacing the corresponding grinding unit, thereby reducing the production cost; moreover, the special surface structure of the grinding unit helps to further enhance the cooling effect, thereby improving the surface quality of the workpiece.
B24D 5/06 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with inserted abrasive blocks, e.g. segmental
B24D 5/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with cooling provisions, e.g. with radial slots
A grinding area normal grinding force-based heavy load grinding wheel achieving self-adaptive cooling. The heavy load grinding wheel comprises a grinding wheel base body (1), grinding blocks (2), cooling spray bottles (3), spray bottle nozzles (4), plate-shaped heat pipe heat dissipation devices (5), and self-resetting mechanisms (6). During operation, the grinding blocks (2) entering the grinding area are subjected to normal grinding force to extrude the cooling spray bottles while compressing the self-resetting mechanisms, and then a cooling liquid is sprayed out from the spray bottle nozzle. Pressure springs in the self-resetting mechanisms are adjusted to set a normal grinding force critical value, and when the normal grinding force is reduced below the critical value or the grinding blocks are separated from a grinding operating area, the self-resetting device is used to achieve automatic resetting of the grinding blocks, and the cooling spray bottles then stop spraying of the cooling liquid. The grinding wheel is compact in structure, the flow rate of spraying the cooling liquid can be adjusted in real time according to working conditions, the self-adaptive internal cooling of the heavy load grinding wheel is achieved, a cooling effect is improved, the wear rate of the grinding wheel in heavy load grinding is reduced, and the service life of the heavy load grinding wheel is prolonged.
B24D 5/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with cooling provisions, e.g. with radial slots
B24D 5/06 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with inserted abrasive blocks, e.g. segmental
B24D 5/08 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with inserted abrasive blocks, e.g. segmental with reinforcing means
A method for lubricating diamond wheel (20) grinding with a shock wave cavitation effect based nano-layer (41). After an air pressure regulating valve (9) is opened, nanoparticles (11) are pushed by shock waves generated by an accelerating tube (10) to move forward, and then accelerated by a small Raphael tube (29) to obtain a relatively high initial velocity; meanwhile, a wave source of a shock wave accelerating module is used to generate high-frequency and high-intensity shock waves to impact the nanoparticles (11) having the initial velocity, so that the nanoparticles are continuously accelerated downward in the axial direction of a large Raphael tube (19) until the nanoparticles are embedded at the highest velocity in the surface of the wheel (20) to form the nano-layer (41); the other wave source is used to clean impurities on the surface of the wheel (20); and during processing, the nanoparticles (11) of the nano-layer (41) are autonomously released in a grinding core area to realize self-lubricating cooling inside the grinding area.
B24B 49/14 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the temperature during grinding
B24B 41/06 - Work supports, e.g. adjustable steadies
B24B 49/00 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
11.
NANO-LAYER LUBRICATED DIAMOND GRINDING WHEEL GRINDING DEVICE BASED ON SHOCK WAVE CAVITATION EFFECT
A nano-layer (41) lubricated diamond grinding wheel (20) grinding device based on a shock wave cavitation effect. The grinding device comprises a control system, an acceleration module, a shock wave speedup module, a machining module and a recovery module, wherein the control system controls the operation of the device; the acceleration module is composed of an acceleration tube (10), a small Laval tube (29), etc., and can make nanoparticles (11) obtain an initial speed; and the shock wave speedup module, which is composed of electromagnetic coils (13), shock heads (12), shock balls (16), wave collectors (18), large Laval tubes (19), etc., generates two wave sources, one being used for cleaning impurities on a surface of a grinding wheel (20), and the other being used for giving a shock to the nanoparticles (11), which have the initial speed, to the surface of the grinding wheel (20) to form a nano-layer (41). During a machining process, the nanoparticles (11) of the nano-layer (41) are autonomously released in a grinding core area, thereby realizing self-lubricating and cooling inside the grinding area; and the recovery module is used for recovering the nanoparticles (11), thereby realizing the reutilization of the nanoparticles.
B24B 41/00 - Component parts of grinding machines or devices, such as frames, beds, carriages or headstocks
B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece
B24B 55/03 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant designed as a complete equipment for feeding or clarifying coolant
12.
Blood vessel imaging temperature measurement method
A blood vessel imaging temperature measurement method is provided. The method comprises the steps of finding blood vessels, displaying a measurement position, and aligning for temperature measurement to achieve visual and precision temperature measurement. The temperature measurement is quite visual, instead of the traditional technology that uses a blind measurement method corresponding to a position to be measured, thereby solving the problem that the temperature measurement is not accurate enough in the traditional technology.
patents
