31results about How to "Guaranteed normal formation" patented technology

The invention relates to the technical field of high-temperature alloy powder metallurgy, in particular to a preparation method of a high-strength cellular distribution gamma'phase high-temperature alloy, which comprises the following steps: preparing high-temperature alloy powder; the prepared high-temperature alloy powder is loaded into a first sheath, and the first sheath is vacuumized and sealed; carrying out preheating treatment on the first sheath; the high-temperature alloy powder in the first package sleeve is dispersed; opening the first sheath, and transferring the high-temperature alloy powder from the first sheath into a second sheath through a charging bucket under a vacuum condition; performing hot isostatic pressing treatment on the second sheath filled with the powder to obtain a first workpiece; cooling the first workpiece to obtain a second workpiece; removing a second sheath outside the second workpiece to obtain a blank, and performing heat treatment on the blank to obtain a target alloy; the powder metallurgy technology is utilized, the preparation technology is adjusted, a specially-distributed gamma'phase is formed in the alloy, and therefore the tensile strength and the endurance strength of the alloy are improved.

The invention belongs to the technical field of films, and relates to an anti-dazzle anti-reflection anti-fingerprint film, which comprises a transparent support body, an anti-dazzle hardening coating and an anti-reflection coating, and the anti-dazzle hardening coating is obtained by coating and curing a coating liquid prepared from the following components in parts by mass: 1 to 40 parts of resin 1, 1.8 to 4.8 parts of resin 2, 0.75 to 3.25 parts of a photoinitiator and 0.3 to 1.75 parts of a thermal curing agent, the anti-glare coating is prepared from the following components in parts by weight: 0.75 to 4.75 parts of anti-glare particles, 0.25 to 1.25 parts of a flatting agent 1, 0.03 to 0.15 part of a flatting agent 2 and 44.05 to 76.12 parts of a solvent, the antireflection coating is obtained by coating and curing a coating liquid prepared from the following components in parts by mass: 0.47 to 1.8 parts of resin 2, 2.4 to 6.0 parts of resin 3, 0.12 to 0.75 part of a photoinitiator, 0.1 to 0.45 part of a thermal curing agent, 0.18 to 1.65 parts of a flatting agent 3, 0.56 to 2.4 parts of modified hollow silicon dioxide, 0.1 to 1.25 parts of a wetting dispersant and 85.7 to 95.74 parts of a solvent. According to the technical scheme provided by the invention, the anti-glare and low-reflection coating has good anti-fingerprint performance, coating adhesive force and friction resistance while having anti-glare and low-reflection performance.

The present invention relates to a method for improving the drying quality and functional factors of fruits and vegetables by low-temperature freeze-thaw combined with integrated immersion freeze-drying, and belongs to the technical field of fruit and vegetable drying processing. The method uses fruits and vegetables with solid content less than 12% as raw materials, adopts a cyclic low-temperature freeze-thaw method to complete the freeze-thaw link of the material in a frozen state, selects small molecule peptides, functional oligosaccharides, and soluble dietary fiber as sugar substitutes to increase the solid content and functional factors, and adopts a fruit and vegetable raw water collection system to recover the water and flavor and pigment substances removed during the vacuum freeze-drying process. At the same time, the loss of nutrients is avoided by atomizing and spraying the impregnation liquid, and the pre-drying, vacuum impregnation, freezing, and post-drying processes are completed in one device. The patented method greatly improves the processing efficiency of dried fruit and vegetable products, reduces the loss of nutrients during the processing process, realizes the comprehensive utilization of fruit and vegetable raw water and flavor pigments, and enriches a variety of nutritional functional factors.

The invention relates to the field of electric heating elements, in particular to a high-temperature-resistant silicon carbide electric heating element and a preparation method thereof. The preparation method comprises the following steps: mixing silicon carbide powder, silicon carbide fibers, graphite, metal silicon powder and a binding agent, and performing compression molding to obtain an initial product; the preparation method comprises the following steps: preparing mullite precursor sol by taking aluminum chloride hexahydrate, tetraethoxysilane and 1, 2-epoxypropane as raw materials; preparing a lanthanum cerate shell layer on the outer layer of the yttrium oxide powder by utilizing a precipitation method to obtain composite powder; adding the composite powder into the mullite precursor sol to obtain mixed slurry; and coating the surface of the initial product with the mixed slurry, and calcining to obtain the high-temperature-resistant silicon carbide electric heating element. The silicon carbide electric heating element prepared by the invention has good thermal stability and can effectively resist thermo-oxidative aging.

The invention relates to an amorphous alloy wire continuous production device and method. The device comprises a mother alloy smelting and spraying assembly, an amorphous alloy wire cooling assembly and an amorphous alloy wire winding assembly. The mother alloy smelting and spraying assembly comprises a feeding mechanism for feeding raw materials, a communicated material pipe and a mother alloy heating mechanism for heating the material pipe; the amorphous alloy wire cooling assembly comprises a motor, a cooling liquid circulating pump and a hub, the cooling liquid circulating pump communicates with the interior of the hub through a cooling liquid circulating pipeline, cooling liquid is guided in, and the motor drives the hub to rotate to form a cooling liquid film; the amorphous alloy wire winding assembly comprises a drum wheel and an amorphous alloy wire suction mechanism, the amorphous alloy wire suction mechanism is arranged in the drum wheel arranged in the hub and comprises a suction strip and a straight rod, a magnet is arranged at one end of the suction strip, the other end of the suction strip is hinged to the straight rod, a driving roller is arranged in the drum wheel and connected with the suction strip through a connecting line, and the connecting line penetrates through the straight rod. Compared with the prior art, the device is simpler in structure and higher in continuous production capacity.

The utility model discloses a fruit collecting device, and belongs to the field of fruit picking. A fruit collecting device comprises a collecting net; the fruit collecting device further comprises a plurality of supporting rods which surround tree roots and are horizontally placed. The main rod is horizontally placed and located on one side of the supporting rods; the auxiliary rod is positioned on one side of the main rod; the first pull rope sequentially penetrates through the ends, close to the tree roots, of the branch rods through the main rod and then penetrates out of the auxiliary rod; the blocking net group is arranged around the outer edge of the collecting net and is connected with the supporting rod; wherein the collecting net wraps the lower part of the supporting rod and is fixed with the supporting rod; one end of the collecting net is connected with the main rod; the other end of the collecting net is connected with the auxiliary rod. The fruit collecting device has the beneficial effect that the fruit collecting device capable of clamping and adapting tree roots with different thicknesses is provided.

The present invention provides a high-throughput power battery positive electrode material and a preparation method thereof, which belongs to the technical field of new energy battery electrode materials. Among them, the preparation method of the high-throughput power battery positive electrode material includes: weighing the raw materials, dividing the nickel source into two parts of unequal weight; respectively configuring the nickel source, cobalt source, and manganese source of large weight portions into solutions, mixing the solutions of the three to form a mixed salt solution to prepare a nickel-cobalt-manganese precursor; sintering the nickel-cobalt-manganese precursor with a lithium source for the first time; configuring the nickel source of small weight portions into a nickel salt solution to prepare a nickel hydroxide precipitate; modifying the nickel hydroxide precipitate to prepare a nickel hydroxide precipitate with a coating layer modified with zirconium dioxide on the surface; sintering the modified nickel hydroxide with the first sintering product for the second time to obtain a high-throughput power battery positive electrode material. The positive electrode material prepared by the above method can reduce the nickel-lithium mixed discharge phenomenon, has high-throughput characteristics, and can be widely used in fast-charging power batteries.

The invention discloses a blasting structure, a blasting method and a shoveling and loading method after blasting of an open stope bounded side slope, the front side and the rear side of the blasting structure are a free surface and an upper step slope angle line respectively, the blasting structure comprises a pre-bounded blasting area and a bounded side slope blasting area, and the junction of the two blasting areas is a boundary line; a plurality of rows of first blast holes with the elevation angle of 90 degrees are formed in the pre-bounded blasting area, the distance between the free face and the adjacent first blast hole is 4 m, and the distance between the boundary line and the adjacent first blast hole is 5 m; four rows of blast holes are sequentially formed in the boundary-reaching side slope blasting area at intervals and include main blasting holes with the elevation angle being 90 degrees, buffering holes, auxiliary holes and pre-splitting holes with the elevation angle being 60 degrees, the distance between the main blasting holes and the boundary line is 4 m, a safety platform is arranged on the rear sides of the pre-splitting holes, and the distance between the pre-splitting holes and the slope angle line of the upper step is not smaller than 6 m. Good conditions are created for formation of a final boundary slope, meanwhile, interference to the stability of surrounding rock masses is reduced to the maximum extent, and potential safety hazards caused by over-explosion or under-explosion are avoided.

This application relates to the technical field of material processing and provides a rapid cooling and kneading device, which includes a housing, a rapid cooling unit disposed above the housing, and a kneading unit disposed below the housing. The rapid cooling unit and the kneading unit are connected by a connecting pipe, which is located outside the housing. An insulation component is provided outside the connecting pipe, including an insulation sleeve covering the connecting pipe, with an insulation cavity between the insulation sleeve and the connecting pipe. This application provides an insulation component outside the connecting pipe to reduce the impact of external temperature during the transport of the supercooled liquid, ensuring the normal formation of subsequent crystals and improving product quality stability. Before use, a heat medium is introduced into the insulation cavity to melt the crystals located in the connecting pipe, reducing the possibility of pipe blockage and ensuring continuous production. It also reduces equipment maintenance costs and downtime caused by pipe blockage, improving equipment lifespan and production efficiency.

The utility model discloses a smart projection picture automatic correction device based on cell -phone / tablet posture response relates to projection equipment technical field. This smart projection picture automatic correction device based on cell -phone / tablet posture response, including device shell, the device shell is the cuboid hollow structure and the front side is open state, the front side fixedly connected with the front cover of device shell, the top is equipped with the heat dissipation hole, the back fixedly connected with the light supplementing lamp, and the bottom side of device shell is provided with fixed base mechanism, and the back of device shell has projection lens. This smart projection picture automatic correction device based on cell -phone / tablet posture response, and the device shell is the cuboid hollow structure, and the front side is equipped with the front cover of dustproof, and the top heat dissipation hole radiates heat, and the back light supplementing lamp light supplementing keeps picture collection accurate. The bottom side fixed base is stable, and the back projection lens projects, and the inside mechanism adjusts the angle, and the circuit control mechanism coordinates the machine realization picture automatic correction.

The invention discloses a heating transmission device suitable for in-situ detection of an ultrahigh-temperature pyrolysis reaction. The heating transmission device comprises a heating pipe and an adjusting assembly, the sample outlet end of the heating pipe can be connected with a detection device; the heating pipe is divided into a low-temperature area, a high-temperature area and an annealing area, the low-temperature area is sleeved with a first water-cooled electrode, and the annealing area is sleeved with a second water-cooled electrode; the adjusting assembly comprises a guide rail and a sliding block, and the sliding block is connected with the first water-cooled electrode or connected with the first water-cooled electrode. According to the invention, a variable-diameter and variable-temperature area is formed through the combined design of the heating tube and the water-cooled electrode, so that the contact between the heating tube and the protective electrode is ensured, a slow and uniform cooling gradient is constructed in the annealing area, the generation and dispersion of product molecules are ensured, and the transmission efficiency of high-molecular-weight compounds is improved. The device is convenient to connect with a mass spectrometer, can realize in-situ analysis of ultrahigh-temperature pyrolytic reaction, and solves the problem that high-molecular-weight products such as polycyclic aromatic hydrocarbon, fullerene and the like in the pyrolytic reaction are gathered due to intermolecular force and cannot be detected in situ.

The invention belongs to the technical field of high-strength and tough aluminum alloy profiles, and discloses a high-strength and tough aluminum alloy and a hollow structural profile and a preparation method thereof, wherein the high-strength and tough aluminum alloy comprises Si: 0-0.35; Fe: 0-0.4; Cu: 0.25-0.35; Mn: 0.3-0.5; Mg: 1.2-1.8; Cr: 0.1-0.2; Zn: 3.5-5.0; Zr: 0.05-0.2; Ti: 0-0.1; the remainder is aluminum and other inevitable impurity elements, and the content of the other inevitable impurities is less than 0.2. The aluminum alloy after optimizing the alloy composition of the invention not only has excellent welding performance, but also has excellent mechanical properties, and it is easy to prepare a high-strength and tough aluminum alloy hollow structural profile. The prepared hollow structural aluminum alloy profile has a yield strength greater than 340MPa, a tensile strength greater than 400MPa, and an elongation greater than 10%.

The utility model belongs to atomization steam heating field provides a kind of atomization steam heating mechanism, atomization steam heating mechanism is provided with atomization steam conveying cavity;Atomization steam conveying cavity has with the atomization steam source intercommunication atomization steam inlet;And with the atomization steam inlet intercommunication hot mist outlet;Atomization steam conveying cavity is provided with atomization steam heating assembly;Wherein, the atomization steam generated by atomization steam source enters atomization steam conveying cavity by atomization steam inlet, is heated after being heated by atomization steam heating assembly and exports by hot mist outlet.The utility model further provides a kind of eye moistening instrument.In the utility model, atomization steam conveying cavity is provided with atomization steam heating assembly, the atomization steam generated by atomization steam source enters atomization steam conveying cavity by atomization steam inlet, is heated after being heated by atomization steam heating assembly and exports by hot mist outlet, atomization steam conveying cavity provides space for the heating and transmission of atomization steam, atomization steam can be effectively heated in it by atomization gas heating assembly, guarantee the formation and output of hot mist, to guarantee hot compress effect.

The invention discloses a stainless steel optical unit negative pressure repairing device which comprises an arc-shaped bottom plate attached to the outer portion of a pipe wall, a connecting pipe communicated to the arc-shaped bottom plate, a hose connected with the connecting pipe into a whole and a negative pressure device connected to the hose, and the arc-shaped bottom plate, the connecting pipe and the hose are of an integrated structure. A through hole is formed in the center of the arc-shaped bottom plate and covers a to-be-repaired concave part outside the pipe wall, the connecting pipe is connected to the through hole of the arc-shaped bottom plate in a sealed mode, and the arc-shaped bottom plate is attached to the outside of the pipe wall in a sealed mode through a sealing structure so that a sealed space can be formed between the to-be-repaired concave part outside the pipe wall and the connecting pipe. And the negative pressure device is used for applying negative pressure to the sealed space so as to repair the to-be-repaired concave part. According to the invention, the pressed deformation part of the stainless steel optical unit is recovered through a negative pressure method, and the local deformation part is recovered, so that the optical signal transmission is normal.

The utility model discloses a soybean milk circulation system of a dried beancurd stick production line, which comprises a beancurd skin forming groove, the front end of the beancurd skin forming groove is fixedly connected with an overflow box, one side of the overflow box close to the beancurd skin forming groove is provided with an overflow groove, the tail end of the beancurd skin forming groove is provided with a soybean milk storage tank, the bottom of the soybean milk storage tank is communicated with a soybean milk guide pipe, and the soybean milk guide pipe is communicated with a soybean milk outlet. The end of the soybean milk guide pipe is connected with a main soybean milk pipe, a soybean milk outlet of the main soybean milk pipe is located in the beancurd skin forming groove, the soybean milk guide pipe is connected and communicated with a soybean milk injection opening, the soybean milk injection opening is formed in the inner wall of the overflow box, a soybean milk guide pump is installed on the soybean milk guide pipe, and a heating mechanism is installed on the portion, below the overflow box, of the soybean milk guide pipe. The heating mechanism heats the reflowing soybean milk, prevents the temperature of the soybean milk from decreasing, keeps the temperature within a proper range and ensures formation of a film on the surface of the soybean milk, the overflow box and overflow groove structure can enable the soybean milk to flow out more uniformly, the film formed on the surface of the soybean milk is consistent in thickness, and the quality of the dried beancurd sticks is guaranteed.

A kind of round straw bundling machine with rope winding mechanism, including frame, fixed plate, transmission system and rope winding station are equipped on frame, rope winding station is under the action of transmission system along fixed plate reciprocating movement in horizontal direction;Rope winding station is equipped with shaft body, and shaft body is equipped with rope distribution plate below;Shaft body is rotatably arranged on rope winding station;Shaft body middle part is equipped with rope channel;Shaft body is sequentially assembled with rope winding roller and thin rope wheel from top to bottom;Rope winding roller is equipped with rope winding groove;Thin rope wheel is fixed with rope winding claw, while thin rope groove is equipped on the outer wall of thin rope wheel, and the end of thin rope groove is towards the first end of rope winding claw, and the end of rope winding claw is towards the end of rope channel;Rope distribution plate is equipped with middle gap and side gap.The utility model discloses a kind of straw bundling with rope winding mechanism, the movement of rope winding station can be wound into rope belt by thick rope and thin rope on round grass bundle, realize the effect of rope winding to grass bundle, it is convenient to use, can obtain better rope winding effect, and the rope belt that is wound is loose and dense on grass bundle.

The application discloses a fruit collecting method and device, and belongs to the field of fruit picking. The fruit collecting device comprises a plurality of supporting rods surrounding a tree root, a main rod horizontally arranged on one side of the supporting rods, a sub rod arranged on one side of the main rod, a connecting sleeve arranged at one end of the main rod and abutting against the tree root, a first pull rope sequentially penetrating through the supporting rods close to the tree root from the main rod and then penetrating out from the sub rod, and a bottom net arranged below the supporting rods and fixed with the supporting rods, one end of the bottom net being connected with the main rod and the other end of the bottom net being connected with the sub rod. The fruit collecting device can clamp and adapt to tree roots with different diameters.

The invention discloses a production method of a cold-rolled steel strip for a welding wire. The production method comprises the working procedures of converter smelting, continuous casting, hot rolling, cold rolling, continuous annealing and flattening. Refining treatment is not carried out; continuous annealing is adopted in the annealing process, and a heating device is arranged behind the rapid cooling section. According to the cold-rolled steel strip produced through the method, the yield strength Rp0.2 is smaller than or equal to 190 MPa, the tensile strength Rm is 280-350 MPa, the percentage elongation after fracture A80 mm is larger than or equal to 44%, the cold-rolled steel strip has good formability, welding performance and drawing machining performance, the surface quality is good after drawing, surface defects such as orange peel and wrinkling do not exist, and meanwhile the production cost is low.

This application relates to the field of ceramic powder processing, specifically disclosing a method for preparing spherical aluminum nitride powder, comprising the following steps: S1, dissolving a water-soluble organic carbon source in water by stirring to obtain a mixed solution; then adding alumina, mixing and stirring evenly, with the mass ratio of the water-soluble organic carbon source to alumina being 1:1-2, to obtain a reaction precursor; S2, subjecting the reaction precursor to spray drying and dry pressing to obtain a block; S3, subjecting the block to degreasing, carbonization, and nitriding reduction treatments to obtain a semi-finished product; S4, subjecting the semi-finished product to decarbonization, cooling, and pulverization to obtain the finished aluminum nitride powder; which has the advantages of high sphericity, high purity, and good thermal conductivity.

The invention provides a hard alloy ball tooth of a gradient structure suitable for dry rock breaking and a preparation method, the hard alloy ball tooth is of an N-layer gradient structure, and raw materials of the gradient structure comprise WC powder, Co powder and graphene powder; in the N-layer gradient structure, the volume fraction of the WC powder and the volume fraction of the graphene powder are equal or increased layer by layer from the inner layer to the outer layer, and the volume fraction of the Co powder is equal or decreased layer by layer from the inner layer to the outer layer; in the outermost layer of the N-layer gradient structure, the volume fraction of the WC powder and the volume fraction of the graphene powder are both larger than the volume fraction of the Co powder; and the thickness of each layer in the N layers of gradient structures is greater than or equal to 0.1 mm. According to the hard alloy ball tooth, the mechanical property of the hard alloy ball tooth is improved, the hard alloy ball tooth has high hardness and high toughness, the hard alloy ball tooth is endowed with more excellent heat dissipation performance, the rock breaking efficiency is improved to a great extent, and the service life of a product is prolonged to a great extent.

The utility model discloses an LF furnace steelmaking closed-loop arc sealing device which comprises an LF furnace structure, a port support is arranged at the lower port of an air blowing brick opening in the LF furnace structure and connected with a pull rod, the pull rod is inserted into a spring pipe provided with an air pressure spring in a sliding mode, the spring pipe is fixed to the top corner position of the upper portion inside a bamboo-hat-shaped shade, and an inclined blowing hole is formed in the lower frame of the side face of the shade. Initially, the shade is hermetically inserted into a blowing hole slot of the furnace body, and the surface of the shade is also annularly provided with spacing-adjustable constraint claws along the axis; in the steelmaking process, argon is blown out from the blowing brick opening, the shade is pushed to move upwards, the inclined blowing hole moves out of the blowing hole inserting groove, communication between the furnace body and the interior of the shade is achieved, argon is rotationally blown into the furnace body, molten steel is driven to be stirred, the purity of the molten steel is improved, meanwhile, the blowing brick opening is prevented from being corroded and blocked by the molten steel and furnace slag, the equipment maintenance cost is reduced, and the downtime is shortened. The shade moves upwards to push the restraining claw to position and restrain the lower end of the electrode, and the influence of molten steel flow on the electrode is reduced.

The invention belongs to the technical field of capacitor production equipment, and particularly relates to a metallized film capacitor glue filling device which comprises a glue injection table, a bubble discharging frame, a conveying belt, a material storage disc, a glue injection mechanism, a negative pressure machine and a downward pressing mechanism. The glue injection mechanism is composed of an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and a glue injection head, the glue injection head is accurately positioned through an angle limiting frame, glue liquid is evenly distributed along the inner wall of the capacitor, and bubbles are reduced. The negative pressure machine is matched with the pressing mechanism, residual bubbles are discharged in a negative pressure environment, and the glue filling quality is ensured; the positioning plate, the guide seat and the guide column guarantee the stability of the pressing sealing process, and the sealing performance and the insulating performance of the capacitor are improved.

The utility model discloses a double vacuum cup with a titanium inner container, which comprises a metal inner shell, a metal outer shell and the titanium inner container, and a first heat preservation space formed by vacuumizing is arranged between the metal inner shell and the metal outer shell; the titanium inner container is provided with an interference assembling part which is in interference assembling with the metal inner shell, a reserved gap used for forming a second heat preservation space is further reserved between the titanium inner container and the metal inner shell, and the second heat preservation space is filled with air. A flexible sealing piece used for sealing the second heat preservation space is arranged between the titanium inner container and the metal inner shell. The second heat preservation space is located below the interference assembly part, and the flexible sealing piece is located above the interference assembly part. Through the interference assembly of the titanium inner container and the metal inner shell and the design of the reserved gap, the double heat preservation effect is achieved, and the heat preservation performance of the heat preservation cup is improved. Meanwhile, through the design of the flexible sealing piece, the second heat preservation space is effectively sealed, and heat loss is prevented.

The present invention relates to the technical field of biomass carbonization, and in particular to a continuous biomass low-temperature carbonization pressurized equipment, comprising: a carbonization furnace, a feeding device arranged at the feeding end of the carbonization furnace, and a cyclone separator arranged at the discharging end of the carbonization furnace, a hot air device is arranged above the cyclone separator, the hot air device comprises an induced draft fan and a plurality of outlet pipes, the induced draft fan is arranged at the upper end of the cyclone separator, and exhausts the interior of the carbonization furnace to form a slight positive pressure inside the carbonization furnace, and a plurality of the outlet pipes are vertically fixedly connected to the carbonization furnace; a carbonization device is arranged inside the carbonization furnace, the carbonization device comprises two rotating rings and a carbonization tank, the two rotating rings are symmetrically sleeved at the two ends of the carbonization tank, and are rotatably installed inside the carbonization furnace; a sealing assembly is arranged on the side of the carbonization tank, and the sealing assembly comprises two sealing rings and a plurality of sealing strips. The present invention keeps the carbonization furnace in a slightly positive pressure state, thereby reducing safety hazards.

The utility model belongs to road construction technical field relates to a kind of road construction with permanent and temporary combination car ferry device. Permanent and temporary combination car ferry device has multiple stone cages being set along the longitudinal axis direction of channel ferry retaining wall;Each stone cage is multiple, and the number of upper stone cage is less than the number of lower stone cage, so that multiple stone cages in longitudinal axis direction are set to form stepped structure's stone cage retaining wall in stepped shape;Each stone cage is the structure with diamond mesh by steel wire weaving, each stone cage has multiple length direction setting partition net, multiple partition net separates the space in stone cage into multiple stone cage unit grid, each stone cage unit grid is filled with block stone and concrete hollow block;Block stone and concrete hollow block are arranged in stone cage unit with interval, and in river direction, concrete hollow block forms interval column with 1m net distance. The utility model provides convenience for both sides of river highway construction period construction material transportation, and improves work efficiency.

The invention belongs to the field of composite nanomaterials, and specifically discloses a preparation method and application of copper nanoclusters with peroxidase catalytic activity. The method at least comprises the following steps: adding penicillamine to an acetic acid-acetate buffer solution with a pH value of 2-4 to fully dissolve it, then adding a copper nitrate solution, heating to 25-60°C when white turbidity is generated, and heating for a reaction of 20-60 min; after the reaction is completed, centrifuging and taking a precipitate, purifying and obtaining copper nanoclusters DPA-CuNCs with peroxidase catalytic activity; using penicillamine as a reducing agent and a stabilizing ligand, the synthesized DPA-CuNCs has good water dispersibility and high stability, good biocompatibility, excellent performance, a wide range of applications, and at the same time ensures the stability of the catalytic activity of CuNCs; having an activity equivalent to that of natural horseradish peroxidase (HRP), using 3,3',5,5'-tetramethylbenzidine (TMB) as a substrate, being able to catalyze H2O2 to rapidly oxidize the substrate TMB into a blue oxide, and being able to be used for detecting biological molecules such as glucose and cholesterol.

The utility model relates to the technical field of artificial soft rime, and discloses an artificial soft rime landscape device which comprises an appearance box body, a refrigerating device, an atomizing device, an electric control device and rime trees, the inner lower layer of the appearance box body is a main case, and the upper layer is a transparent cover; the refrigeration device, the atomization device and the electric control device are all installed in the main case, the trunk part of the rime tree is located in the transparent cover, and the root part of the rime tree is located in the main case; the refrigerating device provides low-air-speed cold air into the transparent cover on the upper layer, and the atomizing device provides water vapor. The rime rime is a rime product of artificial rime, the natural rime landscape is recarved, the requirement that people hope to see rime in multiple periods is met, low temperature is provided through the refrigerating device, liquid water is converted into water vapor through the atomization device to provide humidity, generated cold air is transmitted to the upper layer rime growth environment at a low air speed, and the rime rime growing environment is improved. And a low-temperature environment without wind feeling is created, so that the formation of ice crystals is ensured.

The present application belongs to the technical field of chiral photoelectric materials, and particularly relates to a chiral additive for inducing spiral aggregation of ladder-type non-fullerene acceptors, and a preparation method and application thereof.The chiral additive for inducing spiral aggregation of ladder-type non-fullerene acceptors provided by the present application takes an axially chiral conjugated group as a skeleton and takes a chiral source; a thiophene bridge is used to ensure solubility, and a cyano indenone structure is used for terminal modification to ensure that the chiral additive forms an alloy phase with acceptor molecules. The chiral additive can be used for preparing photoelectric devices such as solar cells or circularly polarized light detectors. The present application uses a chiral additive to induce Y6-type acceptor materials to occur spiral aggregation and form a spiral superstructure with circular dichroism activity. In addition, the chiral additive can optimize the nanomorphology of the active layer in the solar cell, enhance the charge transport and inhibit the recombination, and can improve the photoelectric conversion efficiency of the solar cell.