33 results about "Aggregate structure" patented technology

The invention relates to the technical field of building materials, in particular to phase-change recycled aggregate, a preparation method thereof and an anti-freezing water-stable material. The phase-change recycled aggregate comprises a base material and a packaging layer coating the surface of the base material, the base material comprises a porous decoration waste aggregate structure and an organic phase-change material, and the organic phase-change material is located in gaps of the porous decoration waste aggregate structure; the porous decoration waste aggregate structure comprises aerated concrete aggregate; the encapsulation layer includes a first cementitious material. According to the invention, the phase-change material is used for infiltrating and filling holes in the surface of the aerated concrete aggregate, and then the cement paste is used for wrapping and packaging, so that the reinforcement of the recycled aggregate is completed, the water absorption of the recycled aggregate is reduced, the phase-change material is packaged in the aggregate, and the separation loss of the recycled aggregate is reduced; the high-temperature heat absorption and low-temperature heat release performances of the organic phase-change material are utilized to relieve the stress damage of temperature impact to the internal structure, so that the heat preservation period during winter construction can be prolonged, and the effective hydration time of the cement can be prolonged.

The present invention relates to carbonaceous particulate materials with optimized Braun-Emmett-Teller specific surface areas (BET SSAs), pore size distribution, crystallinity, and aggregate structure possessing advantageous properties, such as, e.g., high corrosion resistance, and improved mass transport characteristics, which renders them particularly useful as support material for catalysts in fuel cells or electrolyzers.

The invention provides a method for analyzing and determining an aggregation structure in a condensed state, which comprises the following steps: step 1, measuring a same condensed state substance sample by adopting at least two structure determination means with different principles, at least another kind of structure measurement means is used for obtaining nanoscale or mesoscale aggregation structure information so as to obtain multi-source structure measurement data representing different structure hierarchies. According to the method, multi-scale structure measurement data is obtained by adopting at least two structure measurement means with different principles for the same condensed substance sample, and structure information of different scales is subjected to combined treatment in the same analysis process; and the structural characteristics of the aggregation structure on the atomic scale, the nanoscale and the mesoscale can be simultaneously included in an analysis range, so that the characterization integrity of the overall characteristics of the aggregation structure in the condensed state is improved.

The present invention belongs to the technical field of sand mills, and specifically is a static discharging sand mill, comprising a base, a permanent magnet motor is installed on one side of the top of the base, a grinding cylinder is installed on the other side of the top of the base, a grinding roller is rotatably connected inside the grinding cylinder, a main shaft is fixed on the side of the permanent magnet motor close to the grinding cylinder, a feed pipe is arranged on the side of the main grinding cylinder close to the permanent magnet motor, a conveying pipe is fixed on the top of the feed pipe, and a gathering structure is fixed on the top of the conveying pipe; large-particle solid materials in the solid-liquid mixture can be filtered through a filter plate, and the large-particle solid materials can be collected through a collecting box, an electric telescopic rod drives a pressure plate to rise and fall to crush the large-particle solid materials inside the collecting box, and the liquid materials flow inside the collecting box and the conveying pipe under the driving of the lifting and falling of the pressure plate, so as to take away the crushed materials, thereby facilitating the processing of large-particle solid materials and reducing the time consumed by grinding rollers.

The embodiment of the invention provides a preparation method of graphene composite powder. The preparation method comprises the following steps: adding a mixed material of powder and a solid carbon source into a reaction cavity; vacuumizing the interior of the reaction cavity, and then filling inert gas to normal pressure; treating the mixed material in the reaction cavity by adopting an acoustic resonance process, and setting sound wave frequency, acceleration, treatment time and material temperature; and collecting products, and cleaning and separating powder. A mixed material in a reaction cavity is treated by adopting an acoustic resonance process, direct contact friction between a grinding material and powder is avoided through acoustic resonance mixing, the risk that impurities are introduced due to mechanical abrasion is reduced, and the problems that the cost is high and the compounding efficiency is low when graphene powder is prepared through a conventional vapor deposition method are solved; the acoustic streaming effect generated by resonance can permeate into the powder aggregate, the aggregate structure is effectively disassembled and is not influenced by different material densities, powder particles with different particle sizes and different components are promoted to be uniformly dispersed and interacted, and the shape of the original powder is not changed.

The utility model discloses a punched plate blanking and collecting device which comprises a material receiving structure, the material receiving structure comprises a material receiving plate, the front end of the material receiving plate is fixedly connected with a front baffle, the rear end of the material receiving plate is slidably connected with a rear baffle, the end, close to a front conveying structure, of the material receiving plate is slidably connected with a left baffle, and a collecting structure is arranged on the right side of the material receiving structure. The material collecting structure comprises a material collecting frame, two parallel supporting plates are fixedly connected to the material collecting frame, a supporting plate is further vertically connected to the material collecting frame in a sliding mode, the material collecting structure further comprises a material storage frame, the material storage frame comprises four sets of supporting legs, connecting rods are arranged between the supporting legs, the supporting plate is arranged in a space formed by the four sets of supporting legs, and transverse electric plug pins are evenly distributed on the supporting legs at intervals. According to the plate collecting device, formed plates are received and stacked, then the plates are stacked in order, then the plates are pushed to move to the supporting plate to ascend, grouped supporting, collecting and storing are achieved through the electric pins, the whole process is automatic, and the discharging and collecting efficiency of the plates is improved.

This invention relates to a composite mineral-modified polyethylene agricultural mulch film and its preparation method. The agricultural mulch film comprises a polyethylene matrix resin and a composite mineral filler dispersed therein. The composite mineral filler is composed of 27%~33% wollastonite, 18%~22% attapulgite, 27%~33% tourmaline, and 18%~22% hexagonalite, and undergoes electromagnetic oscillation physical activation treatment to achieve a specific surface area ≥250m² / g, a particle size ≤2μm, and the formation of hydroxyl active sites on the surface. This invention also discloses the preparation method and its dual functions of degradation and soil improvement. The agricultural mulch film has a tensile strength ≥18MPa, an elongation at break ≥400%, a biodegradation rate ≥70% after 6 months, a far-infrared emissivity ≥0.90, and a negative ion release ≥1200 ions / cm³. After 6~9 months of field use, it disintegrates, and the residual minerals continuously regulate soil pH, release trace elements, and improve the aggregate structure, achieving a virtuous cycle of mulch film degradation and soil improvement.

Alloy powder includes particles. The particles include specific particles. Each of the specific particles has a surface layer on which a divided trace is formed, the divided trace being a mark at which molten alloy is divided; and the divided trace has at least a hill-like ridge aggregate structure or a combination of a crater structure and the hill-like ridge aggregate structure, the hill-like ridge aggregate structure being an aggregate of a plurality of hill-like ridges.

The invention provides desulfurization solution erosion resistant concrete and a preparation method thereof. The desulfurization solution erosion resistant concrete is suitable for coke oven gas desulfurization solution alkaline and various composite salt ion erosion environments. The concrete is formed by compounding water, cement, fly ash, superfine slag powder, a capillary crystalline material, limestone coarse aggregate, limestone fine aggregate and a polycarboxylate water reducing agent according to a preset weight part ratio, the selection of the limestone aggregate ensures the stability of the aggregate structure in alkaline and salty erosion environments, and the synergistic effect of fly ash and superfine slag powder in the admixture ensures the stability of the aggregate structure in the alkaline and salty erosion environments. The compactness and the composite salt corrosion resistance of the concrete are improved, and the composite salt ion penetration resistance is enhanced through internal doping of the capillary crystalline material. According to the preparation method, the concrete with stable performance is obtained by premixing part of the cement and the capillary crystalline material, sequentially mixing and performing standard curing. The durability and the service life of the concrete under the erosion condition of the coke oven gas desulfurization liquid are remarkably improved, the environmental pollution is reduced, and good economic benefits and application prospects are achieved.

The utility model discloses water conservancy project detection sampling equipment which comprises a bottom plate, rollers are fixedly connected to four corners of the bottom of the bottom plate, two mounting seats are fixedly connected to the right side of the top of the bottom plate, push rods are fixedly connected to the interiors of the mounting seats, and a driving mechanism is arranged at the top of the bottom plate. A sampling assembly is arranged on the left side of the bottom plate. By using the driving mechanism, the sampling assembly can be driven, the sampling work of the sampling assembly is facilitated, soil layers with different depths can be sampled by using the sampling assembly, and the problems that when soil is sampled, a drilling mode is generally adopted for sampling, and in the drilling process, the sampling efficiency is greatly improved are solved. The problem that the sampling effect of each layer of soil is reduced due to mixing of the upper layer of soil and the lower layer of soil due to the fact that the aggregate structure of the soil is damaged by rotation of the drill bit is solved, and the sampling device has the advantage of being convenient to sample.

Provided is a silica that exhibits a high matting property when utilized as a matting agent for a paint, and can also suppress the occurrence of cloudiness. The silica has an aggregated structure in which primary particles are aggregated, has a particle diameter ratio R represented by the following equation (1) of from 4.3 to 5.2, has an absorbance of 0.6 or less for light having a wavelength of 700 nm as an aqueous dispersion having a concentration of 1.48 mass %, and has a particle density measured with a He pycnometer of 2.18 g / cm3 or more: Equation (1) R=LD50 / CD50 (in the equation (1), LD50 represents a volume-based 50% cumulative particle diameter (μm) of the silica measured based on a laser diffraction / scattering method, and CD50 represents a volume-based 50% cumulative particle diameter (μm) of the silica measured based on a Coulter counter method).

The application provides an oil-water separation sphere grid layer, a sphere grid type oil-water separation aggregate structure and an oil-water separator, a plurality of connecting pipes are sequentially and parallelly arranged along a second direction, and a first anti-blocking gap is arranged between any two adjacent connecting pipes; a collision sphere is provided with a through hole for the connecting pipe to pass through along a radial direction of the collision sphere, an inner diameter of the through hole matches an outer diameter of the connecting pipe, the connecting pipe sequentially penetrates through a plurality of collision spheres and is connected with the collision spheres, a second anti-blocking gap is arranged between any two adjacent collision spheres, the first anti-blocking gap is larger than an outer diameter of the collision sphere, and any four adjacent collision spheres enclose a converging space. According to the application, a plurality of collision spheres are sequentially and orderly connected on each connecting pipe, and anti-blocking structures are arranged in the first direction and the second direction, so that the oil droplet converging effect and the anti-blocking performance of the oil-water separation sphere grid layer can be ensured simultaneously.

An aluminum-alloy, fin material is composed of a brazing sheet containing a core material and filler material(s) disposed on both sides of the core material. The core material is an aluminum alloy containing 0.02-0.80 mass % Si, 0.02-0.80 mass % Fe, and 0.8-2.0 mass % Mn. The core material has a crystalline-aggregate structure in which: the orientation density of one or more of brass orientation, copper orientation, and S orientation is 20 times or more that or those of a randomly oriented sample; and the orientation densities of cube orientation, CR orientation, and P orientation are each 10 times or less than those of the randomly oriented sample. The filler material(s) is (are) composed of an Al—Si series alloy that contains 6.0-13.0 mass % Si and 0.02-0.80 mass % Fe. The clad percentage of filler material(s) is 6-16% of the total thickness of the brazing sheet.

The invention relates to the technical field of pipe inner wall spraying, and particularly discloses a steel pipe inner wall anticorrosive paint spraying device which comprises a base, a main body frame, a controller, a pair of first hydraulic cylinders, a conveying belt assembly, an adjusting structure, a spraying assembly, a material collecting structure and a discharging assembly. One end of the main body frame is fixedly arranged on the upper wall of the right end of the base, rectangular pipes are stored, stacked and placed through the material collecting structure, the main body frame is matched with the pipes of different thicknesses and widths for use, the main body frame is matched with the discharging set for single-pipe discharging, the spraying assembly is directly sleeved with a pipe groove, spraying of the inner wall of the pipe groove is achieved, and discharging and transferring can be directly conducted after spraying. The adjusting structure can be adjusted to a certain degree according to the sizes of different pipes to enhance practicability, a spraying assembly drives a spraying head to swing in a reciprocating mode, and the swing spraying range is adjusted according to the size of the inner wall of the rectangular pipe groove.

The invention provides a preparation method and application of conductive aggregate, and aims to solve the problems that conductive coating aggregate is difficult to prepare, and the performance and component stability of a developed conductive coating aggregate material are insufficient. The method comprises the following steps: mixing fine aggregate with a polyacrylic resin coating, and continuously mixing under a heating condition to obtain fine aggregate of which the surface is coated with a polyacrylic resin adhesion layer; and mixing the fine aggregate with carbon nanotube powder, and heating and mixing, so that the polyacrylic resin adhesion layer on the surface of the fine aggregate is softened and adheres to the carbon nanotube powder to form a conductive layer, thereby obtaining the carbon nanotube conductive aggregate with a conductive layer-adhesion layer double-layer coating structure. And finally, mixing the conductive aggregate, cement and water to form a stable conductive aggregate structure in the cement-based composite material. According to the conductive cement-based composite material prepared by the invention, the conductivity is greatly improved under the condition of using a nano material with an extremely low doping amount.

The invention discloses a well cementation cement design method fusing a close packing theory and machine learning, and relates to the field of carbon dioxide geological sequestration, and the well cementation cement design method comprises the following steps: obtaining particle size data of cement, silicon powder, superfine silicon powder and nano SiO2; the method comprises the following steps: constructing a three-dimensional random putting and optimization algorithm of a multi-particle-size material through an improved MAA particle accumulation model, and setting a material ratio constraint condition; putting the aggregates according to a preset sequence to generate corresponding spatial positions and postures, and forming a three-dimensional aggregate structure; a genetic algorithm and a machine learning driven optimization strategy are combined, the material ratio is autonomously optimized with the minimum porosity as the target, and the optimal material ratio is obtained; and carrying out compressive strength, permeability and porosity tests to verify the feasibility and CO2 corrosion resistance of the design method. By means of the method, efficient and accurate design and verification of the well cementation cement ratio are achieved, and finally the optimized formula with high compactness, high strength and high durability in the CO2 corrosion environment is obtained.

The utility model discloses a black fungus food packaging box which comprises a box body, a material collecting structure and a discharging structure. The box body is used for containing black fungus powder; the material collecting structure is arranged in the box body and is close to the inner bottom of the box body; the material collecting structure comprises a first inclined block and a second inclined block; a feeding hole is formed by the second inclined block, the inner side wall of the box body and the two first inclined blocks; the material collecting structure is used for guiding the black fungus powder to enter the discharging structure; a discharging channel is formed between the inner bottom wall of the box body and the material collecting structure; the box body is provided with a communicating opening used for communicating the discharging channel with the outside. The discharging structure is movably arranged in the discharging channel and extends out of the box body through the communicating opening; the discharging structure comprises a pushing block, a top plate and a side plate; the top plate directly faces the pushing block and is connected with the pushing block through the two side plates; a discharging space is defined by the pushing block, the top plate and the two side plates. The technical scheme provided by the utility model aims to solve the problem that the existing black fungus food packaging box cannot quantitatively take food.

The utility model relates to the technical field of heading machines, in particular to a material collection driving device of a coal rock heading machine. The problem that in the prior art, equipment operation is affected due to the fact that large-size stone is mixed in an aggregate structure is solved. The stone cutting device structurally comprises a rack, a cutting structure used for cutting stone is arranged on the rack, a conveying structure used for conveying the stone is further arranged on the rack, and a material collecting structure used for collecting the stone is further arranged between the cutting structure and the conveying structure. And a material guiding structure used for guiding the stone into the conveying structure from the material collecting structure is further arranged between the material collecting structure and the conveying structure, a control box is fixed to the material guiding structure, and a first cleaning rod and a second cleaning rod are rotationally connected into the control box. According to the embodiment, the first cleaning rod and the second cleaning rod are rotated to drive large-size stones to be separated from the material collecting shovel, the phenomenon that materials are clamped by the material guiding blades is prevented, and the practicability of the equipment is improved.

The present invention relates to carbonaceous particulate materials having an optimized Braun-Emmet-Teller specific surface area (BET SSA), pore size distribution, crystallinity and aggregate structure, which have advantageous properties such as, for example, high corrosion resistance and improved mass transfer properties, which make them particularly useful as support materials for catalysts in fuel cells or electrolytic cells.

The invention discloses a full-graded concrete three-phase mesoscopic finite element uncertainty quantitative analysis method, and relates to the technical field of building engineering material computer simulation, and the method comprises the following steps: generating a reference finite element grid based on an obtained three-dimensional mesoscopic structure sample, carrying out three-phase material unit division by identifying aggregate area nodes, and carrying out three-phase material unit division; after corresponding material constitutive models are given to the divided three-phase units, a three-phase finite element model corresponding to the three-dimensional microstructure sample is formed, and mechanical property numerical simulation is executed; and macroscopic mechanical property indexes are extracted from the simulation result in batches, and uncertainty quantification and correlation analysis are carried out. According to the method, a complete and efficient solution from an aggregate structure to a three-phase model and then to uncertainty analysis is formed, and a technical support is provided for probability design and performance evaluation of the fully-graded concrete.

This grain-oriented electrical steel sheet is provided with: a base steel sheet having a prescribed chemical composition; a glass cover film provided on the surface of the base steel sheet; and a tension-imparting insulating cover film provided on the surface of the glass cover film. The base steel sheet has an aggregate structure oriented in a Goss orientation. A base steel plate, when the average dispersion angle of the ideal Goss orientation offset from the rolling surface normal direction ND as the axis of rotation is defined as alpha (DEG), the average dispersion angle of the ideal Goss orientation offset from the rolling right-angle direction TD as the axis of rotation is defined as beta (DEG), and the average dispersion angle of the ideal Goss orientation offset from the rolling direction RD as the axis of rotation is defined as gamma (DEG), [alpha] (DEG) and [gamma] (DEG) are satisfied. [alpha], [beta], and [gamma] satisfy formula (1). 0.0 < = beta < 2.5 < alpha < 4.0 < = gamma < = 10.0 (1)

The invention discloses ultra-high performance concrete, a compressed air energy storage cavern lining and a preparation method of the compressed air energy storage cavern lining, and belongs to the technical field of underground engineering building materials. The ultra-high performance concrete is prepared from the following raw materials: 500 to 520 parts of cement, 100 to 110 parts of fly ash, 120 to 130 parts of silica fume, 200 to 220 parts of mullite powder, 450 to 500 parts of corundum coarse aggregate, 750 to 800 parts of fine aggregate and 30 to 50 parts of basalt fiber. In the preparation method, carbon dioxide curing is carried out, the volume concentration is 20-30%, and the gas pressure difference of the curing environment is 0.4-0.5 MPa. A high-temperature-resistant mineral system is constructed according to the formula, the overall strength, compactness and high-temperature stability are improved through grading design, and the toughness and crack resistance are improved through basalt material fibers; the carbon dioxide curing is cooperated with the dual regulation and control effects of a high-temperature-resistant material system and an optimized aggregate structure, so that excellent mechanical properties and air tightness under high-pressure and high-temperature conditions are ensured.

The present invention relates to carbonaceous particulate materials with optimized Braun-Emmett- Teller specific surface areas (BET SSAs), pore size distribution, crystallinity, and aggregate structure possessing advantageous properties, such as, e.g., high corrosion resistance, and improved mass transport characteristics, which renders them particularly useful as support material for catalysts in fuel cells or electrolyzers.

The application belongs to the technical field of sapphire precision components, and relates to a sapphire boss structure, a preparation method and application thereof. The sapphire boss structure comprises a sapphire base layer and a functional boss part. The functional boss part is arranged on the sapphire base layer and forms a solid-phase diffusion bonding interface with the sapphire base layer. The functional boss part is a polycrystalline aggregate structure. The polycrystalline aggregate structure comprises a continuous polycrystalline network framework formed by a plurality of aluminum oxide grains interconnected through grain boundaries. The polycrystalline network framework mainly comprises dense grain boundaries, and the dense grain boundaries are distributed with non-dense grain boundaries. The grain bonding part of the non-dense grain boundaries has local pore intervals. The functional boss part and the sapphire base layer form a solid-phase diffusion bonding interface. The continuous polycrystalline network framework formed by the dense grain boundaries serves as a bearing main body. The non-dense grain boundary region is discretely distributed as a stress release point and a crack control point, so that the overall strength, anti-cracking and impact resistance are ensured.

This invention provides a method and experimental apparatus for inverting and constructing the structure of concrete aggregates, belonging to the field of concrete testing technology. This method and apparatus can obtain the true spatial position and orientation of target aggregates within concrete, achieving three-dimensional reconstruction of key aggregates. Based on the reconstruction results, a concrete-aggregate three-dimensional structural model consistent with the specimen is simultaneously established in the numerical model. Without damaging the specimen structure, the large aggregates within the concrete specimen are precisely located, and their spatial information is used for three-dimensional structural inversion and numerical modeling. This technical solution achieves a high degree of consistency between experimental results and theoretical analysis and numerical simulation, meeting the engineering needs of concrete fracture mechanism research and complex structural performance evaluation.

The application relates to a method for preparing a supported MOF membrane by inducing a low-crystal aggregate structure, an MOF membrane and application. The preparation method comprises the following steps: 1) depositing Al-MOF crystal seeds on the surface of a porous support to obtain an Al-MOF crystal seed layer; 2) placing the porous support with the Al-MOF crystal seed layer deposited on the surface in a supersaturated solution to perform a reaction, and growing a continuous low-crystal Al-MOF aggregate layer on the surface of the porous support; and 3) performing a crystallization reaction on the porous support with the continuous low-crystal Al-MOF aggregate layer grown on the surface to obtain the Al-MOF membrane material; the supersaturated solution comprises an aluminum salt, a ligand and a coordination regulator. The method can prepare a dense high-valence metal MOF crystal membrane material, and the membrane material can be used for efficient separation of various molecular scale separation systems.

This steel wire comprises a steel containing 0.9 to 1.1 mass% of carbon, 0.15 to 0.25 mass% of silicon, 0.25 to 0.35 mass% of manganese and 0.15 to 0.25 mass% of chromium, the remainder being iron and unavoidable impurities, wherein: the steel has a ferrite structure; the diameter of the steel wire is 0.05 to 0.45 mm; the tensile strength of the steel wire in the longitudinal section of the steel wire is 3900 to 4700 MPa; and the surface area from the surface of the steel wire to a depth of 10% of the diameter has a structure in which the total ratio A of the <100> -Azimuth aggregate structure ratio A 100 , of the <110> -Azimuth aggregate structure ratio A 110 and the <111 > azimuth aggregate structure ratio A 111 32% or less.

This steel wire comprises a steel containing 0.9-1.1 mass % of carbon, 0.15-0.25 mass % of silicon, 0.25-0.35 mass % of manganese, and 0.15-0.25 mass % of chromium, with the remainder consisting of iron and unavoidable impurities, wherein: the steel has a ferrite structure; the diameter of the steel wire is 0.05-0.45 mm; the tensile strength of the steel wire is 3900 to 4700 MPa, in the longitudinal cross section of the steel wire; and the surface region from the surface of the steel wire to a depth of 10% of the diameter has a structure in which the total ratio A of the <100> azimuth aggregate structure ratio A100, the <110> azimuth aggregate structure ratio A110, and the <111> azimuth aggregate structure ratio A111 is 32% or less.