212results about How to "Process safety" patented technology

The invention relates to the technical field of industrial automation and intelligent detection, and discloses a multi-mode industrial line inspection robot and system.The robot comprises a crawler saddle, a machine body is installed at the top of the crawler saddle, and mechanical arms are arranged at the driving ends of the two sides of the machine body and used for controlling a detection assembly to make contact with the outer wall of a rail and the outer wall of a pipeline; a cleaning assembly is arranged on the front side of the detection assembly, the cleaning assembly is used for removing dirt on the outer wall of a to-be-detected part before detection, and the system comprises a main control and navigation module used for robot path monitoring, environment perception and dynamic obstacle avoidance and achieving autonomous navigation and path adjustment in a complex environment in combination with GPS and IMU data. Through ground and high-altitude division cooperation and multi-modal detection, all-directional inspection in a complex scene is realized, the applicability, the detection precision and the inspection efficiency are improved, the problem of insufficient applicability of a single scene in the prior art is solved, and an efficient scheme is provided for intelligent maintenance of industrial lines.

The invention relates to the field of transparent flame-retardant modification of polycarbonate, in particular to a sulfonated polyborosiloxane flame retardant for transparent flame-retardant polycarbonate and a preparation method of the sulfonated polyborosiloxane flame retardant. The preparation method comprises the following steps: adding octamethylcyclotetrasiloxane, tetraethyl silicate, boric acid and a sulfonate compound into an organic solvent, adjusting the pH value to 2-5, and reacting to obtain the sulfonated polyborosiloxane flame retardant. The sulfonated polyborosiloxane provided by the invention is simple in preparation process and safe in process, and does not involve the use of halogen compounds. The sulfonated polyborosiloxane prepared by the method has the characteristics of good thermal stability, high carbon residue, self-extinguishing property and the like, and has an excellent effect of expanding to form carbon.

The invention discloses an innocent treatment method of dangerous solid waste in firework and cracker production, which comprises the following steps: adding acid into the precipitated dangerous solid waste in firework and cracker production to control the pH value to be less than or equal to 3, stirring to react, adding alkali to control the alkali mass fraction to be 1-20%, stirring to react, adding an oxidizing agent and a catalyst to react, and finally filtering to obtain filter residue and filtrate, filter residues are harmless residues, and filtrate is discharged after reaching the standard. According to the method, combustion treatment and toxic extraction agent treatment are not needed, multiple hazardous wastes can be subjected to innocent treatment at the same time, the treatment cost is low, and the safety is high.

The invention discloses a preparation method of polyvinylidene fluoride resin. The method comprises the following steps: (1) adding a polymerization stabilizer into water, and fully mixing to obtain a polymerization stabilizer solution; (2) adding deionized water, a dispersing agent and an initiator into the reactor, then adding a bottoming vinylidene fluoride monomer, then heating to carry out suspension polymerization reaction, and continuously supplementing the vinylidene fluoride monomer into the reactor in the reaction process; (3) adding all the vinylidene fluoride monomers, keeping the temperature of the reaction kettle unchanged, adding the polymerization stabilizer solution prepared in the step (1) when the pressure in the kettle is reduced to 72-85% of the reaction pressure, and cooling; and (4) reducing the temperature in the kettle to normal temperature, discharging, and filtering, washing and drying the product to obtain the high-purity polyvinylidene fluoride resin. The polyvinylidene fluoride resin prepared through the polymerization process is narrow in molecular weight distribution and excellent in basic performance such as heat resistance, and meanwhile the process is safe, reliable and high in production efficiency.

The invention discloses a machining method for an efficient defrosting fin heat exchanger of an air source heat pump. The machining method comprises the following steps that a machining system for the efficient defrosting fin heat exchanger of the air source heat pump is constructed; performing surface treatment on the fin type heat exchanger; preparing a hydrophobic coating on the surface of the fin heat exchanger; and a hydrophilic and hydrophobic spacing layer is arranged, and super-lubrication treatment is carried out. According to the technical scheme, the defrosting fins of the air source heat pump are subjected to surface coating machining, the hydrophilic and hydrophobic spacing layer is arranged on the surface of the fin heat exchanger, the super-lubricating solution covers the surface of the fin heat exchanger, and therefore the passive frost restraining performance of the heat exchanger is improved, and the defrosting duration of the heat exchanger is shortened; the air source heat pump defrosting fin surface coating machining process is safe, reliable, efficient and stable.

The invention discloses a working face end head top plate weakening anti-scour method, which adopts a mode of performing hydraulic slotting in a surrounding rock top plate of a roadway dangerous area of a working face end roadway to form a pressure relief slot, a retarding slot and a far-field dynamic load source breaking and expanding slot so as to improve the anti-scour capability of the working face end roadway. A pressure relief slot formed by hydraulic slotting on a roadway top plate can release static load of roadway surrounding rock, and a retarding slot formed by hydraulic slotting on a dynamic load propagation path can retard far-field dynamic load from being propagated to the roadway. The far-field dynamic load source breaking and expanding seam groove formed by hydraulic slotting in the rock mass near the dynamic load source can reduce the elastic energy density of the rock mass near the dynamic load source and reduce the possibility of roof breaking. According to the method, the energy capable of inducing the rock burst disaster can be jointly reduced in the three aspects of the generation condition of the dynamic load, the propagation path of the dynamic load and the static load of the surrounding rock, and the method is particularly suitable for solving the rock burst problem of the end roadway of the working face.

The invention discloses a rare earth recovery method of ionic rare earth acid-soluble slag, which comprises the following steps: adding water into ionic rare earth concentrate acid-soluble slag for size mixing to obtain mixed slurry; adding a sodium hydroxide solution with the concentration of 50-100g / L into the mixed slurry for alkaline conversion, filtering and washing to obtain first wastewater and an alkaline cake; water is added into the alkali cake for size mixing, alkali cake slurry is obtained, the solid-liquid weight ratio of the alkali cake to the water is 1: (1-2), the alkali cake slurry is heated for acid dissolution, the pH is controlled to be 0.5-1.0, and a rare earth crude product solution is obtained after filtering and water washing; precipitating the rare earth crude product solution with an oxalic acid solution, filtering, and washing to obtain second wastewater and an oxalic acid rare earth mixture; and firing the oxalic acid rare earth mixture at a high temperature to obtain the mixed rare earth oxide. The process is simple in technology, short in flow, less in three wastes, stable and reliable in operation and low in cost, and the rare earth recovery rate reaches 90% or above.

The invention relates to a normal-temperature preparation method of ultra-small perovskite quantum dots. The method comprises the following steps: in normal-temperature air, mixing environment-friendly low-toxicity terpene with a high-polarity solvent (such as N, N-dimethylformamide and the like), and respectively mixing with CsBr and PbBr2 powder to prepare a terpene ligand; the method comprises the following steps: mixing a terpene ligand, oleic acid and oleylamine to prepare a terpene reaction precursor; and adding the terpene reaction precursor into an anti-solvent to form a precipitate so as to prepare the CsPbBr3 perovskite quantum dot capable of emitting ultra-small-size dark blue light. According to the method, the quantum dots with the ultra-small particle size smaller than 3 nm can be prepared, and by changing the volume ratio of terpene in the ligand solution or the variety of terpene, the light-emitting wave band of the prepared quantum dots can cover a deep blue light area of 440-460 nm and can be expanded to a purple light area of 415 nm.

The utility model discloses a material forming stamping device, and relates to the technical field of stamping. A supporting frame is arranged on the back face of the workbench, a stamping mechanism is arranged at the upper end of the supporting frame, a transverse conveying mechanism is arranged on one side of the top face of the workbench, two lower dies are arranged on the front face of the transverse conveying mechanism, and the bottoms of the lower dies make sliding contact with the upper surface of the workbench. The lower die is provided with a discharging auxiliary assembly used for pushing materials to be separated from the lower die. The two lower dies are controlled by the transverse conveying mechanism to alternately conduct stamping and feeding and discharging, the lower dies separated from the stamping mechanism are automatically discharged through the discharging auxiliary assembly, the efficiency and quality of stamping machining and feeding and discharging are improved, the situation that the hands of an operator stretch into the device is avoided, the stamping process is safer, and the automation degree is improved. The buffer assembly is arranged to buffer the upper die, the fault rate of the stamping mechanism is reduced, and meanwhile the service life of the stamping mechanism is prolonged.

The invention relates to a preparation method of a high-performance soybean protein emulsion film, which comprises the step of carrying out fibrosis denaturation on soybean protein by adopting an acetic acid-water binary solution, so that the hydrophobic property, the film-forming ability and the environmental interference resistance of the soybean protein can be remarkably improved. And further starting from a protein self-assembly fibrosis principle and a protein film forming theory, a soybean protein-based biological membrane with certain mechanical strength and flexibility is constructed through self-assembly fibrosis denaturation of protein molecules in an aqueous solution, so that the problems of poor mechanical property and high solubility of the existing protein-based biological membrane are effectively solved.

The invention relates to an amidoxime functionalized nanocellulose porous material and a preparation method and application thereof.The preparation method comprises the steps that nanocellulose and a dispersing agent are fully mixed to prepare emulsion, then the emulsion and a cross-linking agent micromolecular monomer containing nitrile functional groups are subjected to cross-linking polymerization through a nucleophilic substitution reaction, and the amidoxime functionalized nanocellulose porous material is obtained. And then carrying out amidoximation reaction on nitrile functional groups contained in the cross-linked polymer to prepare the amidoxime functionalized nano-cellulose porous material. The preparation method is simple, and reaction conditions are mild; the obtained amidoxime functionalized nanocellulose porous material has a hierarchical pore structure, a relatively high specific surface area and various active binding sites, and can be used for efficiently removing heavy metal ions in industrial wastewater; and the amidoxime functionalized nano cellulose porous material can be simply recycled, and the amidoxime functionalized nano cellulose porous material can still keep a relatively high adsorption effect after 20 times of cyclic adsorption.

The invention belongs to the technical field of suspension bridge upper structure construction, and particularly relates to a cable clamp type auxiliary cable saddle installation method based on an assembly type temporary cable saddle. The invention discloses a cable-clip-like auxiliary cable saddle mounting method based on an assembled temporary cable saddle. The cable-clip-like auxiliary cable saddle mounting method comprises the following steps that mounting construction of a main tower and an auxiliary tower is completed; a main cable saddle and an assembly type temporary cable saddle are installed, then cable strand erection is conducted on the basis of the assembly type temporary cable saddle, and cable strand sag alignment, cable tightening and cable clamp installation are completed; hoisting a stiffening beam in the midspan, pushing the main cable saddle towards the midspan to lift the main cable to a set height, dismounting the fabricated temporary cable saddle, mounting the lower half saddle body of the cable-clip-like auxiliary cable saddle, and then mounting the upper half saddle body to complete the mounting of the cable-clip-like auxiliary cable saddle. By means of the structural characteristics of the suspension bridge, additional internal force generated on the main tower and the auxiliary tower and bidirectional pushing of the main cable saddle are avoided, sag adjustment of the cable strands is facilitated, safety and reliability are achieved, and the safety risk in the whole construction process is reduced.

The utility model discloses a mold ejector pin length precision grinding clamp, and relates to the technical field of precision grinding clamps. The clamping device comprises an installation bottom plate and a clamping assembly, the surface of one end of the installation bottom plate is fixedly connected with a threaded block, the surface of the other end of the installation bottom plate is fixedly connected with a fixing block, and matched sliding rods are fixedly connected between the two sides of one surface of the threaded block and the fixing block. Through the arrangement of the threaded block, the fixing block, the matched sliding rod, the sliding groove and the clamping assembly, the ejector pins needing to be machined can be clamped in the clamping groove, the threaded rod is rotated to push the one-way sliding clamping block to move, under the cooperation of the two-way clamping block, the matched spring and the one-way fixing clamping block, multiple sets of ejector pins are fixed, then the linkage block is rotated, and the ejector pins are clamped. The clamping grooves and the clamping blocks are buckled, the fixing stability of the ejector pin is further enhanced, the situation that the spring shakes in the machining process and machining of the ejector pin is affected is avoided, positioning is more reliable, machining is safer, and machining efficiency is improved.

The invention discloses a preparation method and application of a bimetallic phosphate oxygen evolution electrode. The preparation method of the bimetallic phosphate oxygen evolution electrode comprises the following steps: cleaning a nickel substrate in an alkaline solution to remove oil, and cleaning the nickel substrate with pure water; soaking the cleaned nickel substrate in an acid solution, cleaning the nickel substrate with pure water, and placing the nickel substrate in the pure water for later use; the nickel substrate placed in the pure water serves as a cathode, two pure nickel materials are placed on the two sides of the nickel substrate to serve as two anodes, and electro-deposition is conducted on the nickel substrate in a bimetallic phosphate solution; and washing an electrode obtained after electrodeposition of the nickel substrate, and drying to obtain the bimetallic phosphate electrode. According to the preparation method, the adsorption free energy of a catalytic layer on the surface of the bimetallic phosphate oxygen evolution electrode on a reaction intermediate is optimized through the synergistic electronic effect of two metals, so that the intrinsic activity of oxygen evolution reaction is improved, meanwhile, a relatively stable catalytic layer structure is formed, and the stability of the bimetallic phosphate oxygen evolution electrode in the oxygen evolution process is improved.

The invention discloses a method for preparing dapinustat by a one-pot method. According to the method, at least one of glycine ester and glycine ester salt is free under the alkaline condition and then reacts with chloroformate, 1, 3-dicyclohexylpyrimidine-2, 4, 6 (1H, 3H, 5H)-triketone is added into the reaction product, heating reaction is performed, finally ester hydrolysis and acidification are performed, separation and purification are performed, the dapinustat is obtained, the yield of the product is 82.5%, and the purity is 99.9% (HPLC). According to the invention, a one-pot reaction strategy is adopted, the cost is greatly reduced, the operation is simple and convenient, the reaction condition is mild, and the method is suitable for industrial large-scale production.

The invention provides a ferronickel-based oxygen evolution electrode and a preparation method thereof based on interface confinement. The preparation method of the ferronickel-based oxygen evolution electrode comprises the following steps: preparing a precursor solution containing ferrous ions and ferric ions; the foamed nickel substrate is cleaned; the cleaned foamed nickel is tightly attached to the surface of the bottom of the reaction container, the foamed nickel is immersed in the precursor solution, under the room-temperature standing condition, divalent and trivalent iron ions are induced to be subjected to a synergistic hydrolysis and coprecipitation reaction through a physical interface confinement space formed by an attached interface, and the nickel-based composite material is obtained. Therefore, a high-activity and high-uniformity nickel-iron-based (oxygen) hydroxide catalyst layer (DIC-NiFeOOH / NF) is grown on the surface of the foamed nickel in situ. The method is simple in process, green and energy-saving, and the prepared nickel-iron-based oxygen evolution electrode shows excellent performance in oxygen evolution reaction and anion exchange membrane water electrolysis.

The invention provides a plasma-based modification method for aging resistance and flashover resistance of the surface of an insulating material, and relates to the technical field of surface modification of insulating materials, and the plasma-based modification method specifically comprises the following modification steps: step 1, grinding 40-60 parts of the insulating material and then sieving; step 2, pouring into 40-60 parts of deionized water, and mixing; and 3, pouring 22-25 parts of absolute ethyl alcohol, heating, carrying out ultrasonic dispersion for 10-15 minutes, and stirring. According to the method for modifying the aging resistance and flashover resistance of the surface of the insulating material based on the plasma, the coupling agent cooperates with the plasma to perform composite modification treatment on the surface of the insulating material, so that the grafting rate of the surface of the insulating material and the coupling agent is increased, the surface of the insulating material is etched, the roughness is improved, and the surface energy is increased; further through plasma modification treatment, the direct-current vacuum surface flashover voltage of the insulating material is remarkably improved, and the method is simple in process, safe in process and environmentally friendly and can be widely applied to the field of high-voltage insulating materials.

The invention discloses a lactobacillus delbrueckii subsp. Bulgaricus CCFM1520 for transforming curcumin to produce tetrahydrocurcumin to relieve nervous anxiety, and belongs to the technical field of microorganisms. The lactobacillus delbrueckii subsp. Bulgaricus CCFM1520 screened by the invention has the capability of converting curcumin, and can utilize curcumin and generate tetrahydrocurcumin. The invention further provides a synbiotic preparation prepared from the lactobacillus gasseri CCFM1481 and curcumin, the synbiotic preparation can be used as an anti-fatigue functional medicine, the individual behavioral memory level can be improved, the imbalance of body neurotransmitters (DA, 5-HT and NE) can be slowed down, the expression of body neuroprotection related genes (BDNF, TrkB, DRD1 and TH) can be improved, and the synbiotic preparation has a huge application prospect.

This invention belongs to the field of cosmetic technology, specifically relating to a method for preparing a lemon fruit extract containing sennaol and its application in soothing. This invention provides a method for preparing a lemon fruit extract containing sennaol, utilizing the strong penetration and dissolving power of a green solvent and the high selectivity of enzymatic reactions to achieve not only efficient extraction and conversion of sennaol but also naturally endowing the final product with excellent water solubility and chemical stability. The prepared lemon fruit extract can be directly applied to water-based formulations without complex modification or the addition of large amounts of co-solvents, maintaining potent skin-soothing activity. The entire process is gentle and safe, with no irritating organic solvents or strong acid residues, making it particularly suitable for cosmetic development targeting sensitive skin.

The present invention discloses a bag-smoothing assembly for a packaging machine with separated inner and outer packaging bags, comprising a bracket, a lifting assembly is arranged above the bracket, an elastic bag-smoothing mechanism is connected to the bracket below through a tension adjustment assembly, a telescopic connection mechanism is also arranged inside the bracket, an exhaust pipe is arranged above the telescopic connection mechanism and at the top of the bracket, a bag-supporting assembly plate is arranged below, and the bag-supporting assembly plate and the elastic bag-smoothing mechanism jointly open the bag opening. The beneficial effects of the present invention are: the elastic bag-smoothing mechanism can adjust the action range of the frame, which is convenient for applying packaging bags of different models; the spring pressure plate and the bag-supporting assembly plate can jointly open the inner bag opening, and can jointly straighten the inner bag opening upward; the lifting assembly includes a pulley lifting mechanism and a cylinder lifting mechanism, which realizes the stable up and down movement of the bracket, and avoids excessive force when the cylinder lifting mechanism is instantly started and stopped, thereby damaging the packaging bag.

The invention relates to a preparation method of phenethyl trialkoxysilane, and belongs to the technical field of synthesis of fine chemicals. The method comprises the following steps: adding styrene and a catalyst into a reaction kettle; dropwise adding trialkoxysilane into the reaction kettle, wherein the molar ratio of styrene to trialkoxysilane is (1.8-1.0): 1.0; and rectifying the reaction material to obtain a target product. The phenethyl trialkoxysilane with the purity larger than 98% and the mass yield higher than 85% (with the mol feeding amount of trialkoxysilane as the standard) is generated through the reaction of styrene and trialkoxysilane under the solvent-free condition, and compared with a large amount of hydrogen chloride as a byproduct in the prior art, the phenethyl trialkoxysilane synthesis method is environmentally friendly, small in corrosion to equipment and low in production cost. The method can prolong the service life of equipment, does not need to use a solvent, further reduces the production cost, has fewer byproducts, does not generate waste materials, is high in raw material conversion rate, and can be used for industrial production.

The utility model belongs to the technical field of regeneration of useful parts of waste storage batteries, and particularly relates to a cylindrical lithium battery discharging device which comprises a discharging platform, a sliding groove is formed in the platform in the length direction, and a sliding seat is arranged in the sliding groove in a sliding fit mode. A stepped hole for bearing a battery is vertically formed in the sliding seat in a penetrating manner; the platform comprises two side plates and a top plate, and the sliding groove penetrates through the top plate; a hollow discharge bin is arranged on the top plate in a protruding mode, the two ends of the sliding groove extend out of the discharge bin, and channel openings are formed in the side walls of the two ends of the discharge bin. An upper discharging guide rod capable of vertically stretching and retracting is arranged in the discharging bin, a lower discharging guide rod capable of vertically stretching and retracting is arranged below the top plate, the lower discharging guide rod is located under the upper discharging guide rod, and the free ends of the upper discharging guide rod and the lower discharging guide rod are opposite; and the upper and lower discharge guide rods are electrically connected with a discharge instrument respectively. The device is suitable for being applied to an automatic production line under the working condition of a vertical manipulator, residual electricity of the battery is released in the discharging bin, use is reliable, and the process is convenient and safe.

A gas processing system according to one aspect includes: a multiple-shell tank including an inner shell storing a cryogenic liquid therein, one or more outer shells accommodating the inner shell, a combustible gas being filled in an insulating space between the inner shell and the one or more outer shells or an insulating space between two adjacent outer shells among the outer shells; a combustor located outside the one or more outer shells; a discharge passage that discharges the combustible gas from the insulating space and guides the combustible gas to the combustor; and a discharge valve located at the discharge passage.

The translation sliding table device comprises a sliding table body, a sliding rail is arranged on the sliding table body, a sliding table is arranged on the sliding rail, a positioning piece for positioning various workpieces is arranged on the sliding table, and the sliding table is driven by a power mechanism to reciprocate along the sliding rail. The telescopic protection structures are used for protecting the sliding rail, the telescopic protection structures are arranged at the starting end and the tail end of the sliding rail correspondingly, each telescopic protection structure comprises a telescopic body, and when the sliding table moves from the starting end of the sliding rail, the telescopic protection structures of the starting section of the sliding rail are driven to extend so as to protect the corresponding sliding rail section in the stroke. The sliding table drives the telescopic protection structure at the tail end of the sliding rail to protect the corresponding sliding rail section in the stroke when moving from the tail end return stroke, and the telescopic protection structure at the initial section of the sliding rail is compressed and recovered to the initial state according to the return stroke. The feeding of various workpieces is compatible, the automatic operation process is safe and reliable, the dustproof effect of the sliding rail is achieved, and the operation precision of the whole device is guaranteed.

The invention belongs to the technical field of smelting, and particularly relates to a device for producing crude antimony by smelting an antimony oxide-containing material in a molten pool, which comprises a molten pool furnace, fixed plates fixedly connected to two side edges of the molten pool furnace, a placement plate fixedly connected to the rear end face of the molten pool furnace, a mounting seat fixedly connected to the top of the placement plate, and a telescopic cylinder arranged at the top of the mounting seat, the top of the telescopic cylinder is in threaded connection with a rotating rod, an auxiliary assembly is arranged at the top of the telescopic cylinder, two grate bars are fixedly connected into the molten pool furnace, and flowing assemblies are arranged on the inner sides of the two grate bars. According to the method and device for producing crude antimony through smelting of the antimony oxide-containing material in the molten pool, the arc body acts on the thin layer, the thin layer gradually covers the position over the molten pool furnace during displacement, it is prevented that a smelting solution boils and splashes to affect safety, the inserting piece facilitates observation and turning treatment of the middle, and the safety of the smelting solution is improved. Therefore, the mobility of the equipment can be rapidly changed, and the process of producing the crude antimony can be ensured to be safer.

The present invention discloses an inner bag tying method suitable for a packaging machine with separated inner and outer packaging bags. The device used in the method includes: a bag tying support frame, a connecting plate is provided on the bag tying support frame, a tying mechanism, a rotating mechanism, a lifting mechanism, and a closing mechanism are provided on the connecting plate. Compared with the prior art, the beneficial effects of the present invention are: the bag-stretching mechanism can realize the opening of the outer bag and the upward and downward pushing, the closing mechanism and the bag-twisting mechanism can realize the automatic closing and tightening of the inner bag, and the tying mechanism can realize the automatic tying of the inner bag opening step by step. The automatic packaging of the inner bag of the separated inner and outer packaging bag is realized, the working conditions are improved, the production efficiency is increased, the production cost is reduced, and the work-related accidents are reduced; the whole process is safe, reliable, fast and efficient, and can be widely promoted and used.

The invention relates to the technical field of coal-fired unit desuperheating water spraying, in particular to a method and system for frequency modulation through coal-fired unit boiler desuperheating water instantaneous water spraying flow. The frequency modulation method using the instantaneous spray water flow of the desuperheating water of the coal-fired unit boiler comprises the following steps: firstly, determining increase or decrease of a unit load corresponding to a primary frequency modulation instruction in a DCS (Distributed Control System) corresponding to the coal-fired unit boiler; secondly, primary boiler desuperheating water instantaneous control logic is added in primary frequency modulation instruction response control logic configuration in the DCS control system, so that the primary boiler desuperheating water instantaneous control logic is controlled according to increase or decrease of unit load; and finally, applying the boiler desuperheating water instantaneous control logic to the opening degree of a desuperheating water control valve in a DCS (Distributed Control System) so as to realize desuperheating water instantaneous water spraying flow control. The method can achieve the quick change of the unit load, and can better respond to the primary frequency modulation signal of the unit.

The invention discloses a preparation method of a crystal glass ornament with a diamond-like coating on the surface, and relates to the technical field of vacuum coating, and the preparation method comprises the following steps: S1, pretreating the surface of the ornament, cleaning and polishing the surface of the ornament to ensure that the surface is free of greasy dirt, dust and other impurities; s2, preparing a graphite target material, selecting high-purity graphite as a target material, and mounting the target material at the position of an anode cylinder target material of coating equipment; and S3, preparing a vacuum environment: placing the jewelry in a vacuum chamber, and vacuumizing to preset pressure to ensure the purity of the deposition environment. According to the diamond-like carbon film prepared through the method, the texture can be improved, adverse effects on crystal glass jewelry cannot be generated in the preparation process, the process is safe and reliable, the filtered cathode vacuum arc technology is adopted, impurities in a graphite target material are effectively removed, the purity and quality of the deposited film are improved, and the diamond-like carbon film is suitable for surface treatment of jewelry made of various materials; and the method has good universality and adaptability.

The invention belongs to the technical field of eutectic gels, and particularly discloses a severe environment-resistant eutectic gel as well as a preparation method and application thereof. The preparation method comprises the following steps: etching Ti3AlC2 with hydrofluoric acid to prepare MXene, and modifying MXene with a tetrabutylammonium hydroxide intercalation to obtain a tetrabutylammonium hydroxide intercalated MXene nanosheet; the preparation method comprises the following steps: by taking tetrabutylammonium chloride and thymol as raw materials, mixing, heating and stirring to obtain a deep eutectic solvent, sequentially adding isobornyl methacrylate, acrylic acid-2-phenoxyethyl ester, ethylene glycol dimethacrylate, diphenyl (2, 4, 6-trimethylbenzoyl) phosphine oxide and tetrabutylammonium intercalated MXene nanosheets into the deep eutectic solvent, stirring in a dark place, and carrying out vacuum drying, so as to obtain a finished product. And performing photo-crosslinking curing under ultraviolet irradiation to obtain the eutectic gel. The eutecticevaporate gel prepared by the invention not only has good mechanical properties, but also has good toughness, self-adhesion, freezing resistance, high temperature resistance, moisture resistance, drying resistance and excellent strain sensitivity, and overcomes the defect that the traditional hydrogel and hydrophilic eutecticevaporate gel are not moisture-resistant; the method has wide application prospects in the fields of flexible strain sensors, intelligent wearable devices, bionic electronic skins, medical health monitoring or intelligent soft robots and the like.

The utility model relates to the technical field of sheet metal processing, and discloses a flattening device with good safety, which comprises a bottom plate and a fixing plate, support blocks are fixedly arranged on both sides of the upper end face of the bottom plate, and a rotating shaft is rotatably embedded in the opposite sides of the two support blocks close to the middle point of the front end. And rotating gears are fixedly arranged on the two sides of the outer surface of the rotating shaft in a sleeving mode, sliding blocks are fixedly arranged on one sides of the upper end faces of the two supporting blocks, racks are fixedly arranged on the two sides of the lower end face of the fixing plate, and a transmission shaft is rotationally embedded in the front end face of the fixing plate. According to the device, the rotating gears rotationally arranged on the two sides of the outer surface of the rotating shaft can drive the fixing plate fixedly provided with the rack to conduct telescopic adjustment, and meanwhile the transmission shaft rotationally embedded in the fixing plate can drive the threaded rotating rod fixedly sleeved with the first bevel gear to rotate; and a movable plate which is movably arranged in a sleeving manner is driven to extrude and fix the sheet metal part.