515results about How to "Reduce collapse" patented technology

The invention relates to a high viscosity solar cell front silver serum and a preparation method thereof. The composition and the weight ratio of the high viscosity solar cell front silver serum are that conductive silver powder accounts for 75-85 percent, glass glue accounts for 2-10 percent, organic carrier accounts for 5.5-20 percent, the particle size of the conductive silver powder is 0.2-2mum; the composition and the weight ratio of the glass glue are that Bi2O3 accounts for 65-85 percent, SiO2 accounts for 5-20 percent, PbO accounts for 1-15 percent and Al2O3 accounts for 1-5 percent. After such processes are carried out by the serum as screen printing, low temperature drying and high temperature sintering, the aspect ratio of a conducting electrode formed on the surface of solar cell is high, the solar cell produced by using the method has small front shading area and high photoelectric conversion efficiency.

The embodiment of the invention discloses a folding assembly. The folding assembly comprises a first shell, a second shell and a rotating shaft assembly, and the rotating shaft assembly is connected between the first shell and the second shell. The first shell comprises a first main shell part and a first supporting part, the first supporting part is connected to the side, close to the rotating shaft assembly, of the first main shell part, the second shell comprises a second main shell part and a second supporting part, and the second supporting part is connected to the side, close to the rotating shaft assembly, of the second main shell part, wherein the first main shell part is used for supporting a first straight part of the flexible display screen, the second main shell part is used for supporting a second straight part of the flexible display screen, and when the first shell is in a folded state relative to the second shell, the first supporting part and the second supporting partare used for jointly supporting a bent part of the flexible display screen. The bent part of the flexible display screen is connected between the first straight part and the second straight part. Thefolding assembly can support the bent part of the flexible display screen. The embodiment of the invention further discloses electronic equipment.

A graphene-cladding manganese dioxide combination electrode material and a method for producing the same, belonging to the technical field of electronic functional materials, the graphene-cladding manganese dioxide combination electrode material comprises nano manganese dioxide particles and graphene cladded with manganese dioxide particles, wherein the mass ratio of graphene and the nano manganese dioxide particles is 1:(1.25-10). The method comprises the following steps: preparing the nano manganese dioxide particles and graphite oxide respectively, and mixing and ultrasonically dispersing to obtain the graphene-cladding manganese dioxide dispersing agent, finally, reducing the graphite oxide to obtain the graphene-cladding manganese dioxide combination electrode material. The graphene is used to clad the manganese dioxide, so the electrical conductivity and cycling stability of the electrode material parts can be improved; and meanwhile, the existence of the manganese dioxide particles also effectively prevents the graphene from reunion, so the specific capacity of the electrode material of a supercapacitor is obviously increased. The method has a simple technology, reaction products are easy to control, the purity is high, and the produced combination electrode material is suitable for producing an electrode plate of the supercapacitor.

The invention relates to the field of tunnel construction, in particular to a method for constructing a metamorphic rock confined water tunnel, which solves the problems of the current method that geological disaster is easily initiated, the digging outline is difficult to control, timbering at initial stage is easy to transform and craze and the collapse is easy to occur. The method comprises the steps of: preliminarily forecasting surrounding rock level and underground water developing condition, accurately forecasting the geologic condition and the underground water developing condition by an advanced prospect hole, draining and decreasing water pressure by an advanced borehole, fixing the surrounding rock and plugging water by grouting via an advanced ductile, choosing a digging manner of tunnel trunk, determining the timbering form at initial stage, constructing a radial ductile, digging an inverted arch, pouring inverted arch concrete, and constructing a secondary lining. The construction method of the invention can efficiently control the digging outline, decrease the collapse frequency and the scale, efficiently control the transformation and cracking of the timbering at initial stage and can almost avoid the tunnel collapse by secondarily exchanging arch. The cost is decreased and the construction quality and the construction safety are efficiently promoted so as to bring excellent social benefit.

A nasal dilator that includes an upper resilient member for dilating the nasal valve and a lower resilient member for dilating the nostrils. The upper resilient member and lower resilient member may be attached to one another by a flexible substrate having a middle portion that is narrower in length than the upper or lower resilient members. The nasal dilator also may have adhesive tabs extending downwardly from the lower portion of the substrate on either side of the nose and towards the nostril entry, for temporary attachment to the side of the nasal vestibule to reduce nostril collapse. The nasal dilator also may include bendable or configurable hooks extending downwardly from the lower portion of the substrate and towards the nostril entrance for insertion into the nostril to reduce nostril collapse.

The invention discloses a small crystal grain Y-shaped molecular sieve and a preparation method thereof. The small crystal grain Y-shaped molecular sieve has the following properties that: the molar ratio of SiO2 / Al2O3 is 5.0-20.0; the average diameter of crystal grains is 100 to 700nm; the crystallization reservation degree is over 95 percent; and the weight percentage of sodium oxide is less than or equal to 0.1 percent. The small crystal grain Y-shaped molecular sieve takes a small crystal grain NaY molecular sieve with good thermal stability and hydrothermal stability as a raw material, has a high silicon-aluminum ratio, good stability and a uniform framework, namely a silicon-aluminum structure, can uniformly remove aluminum and supplement silica in an ammonium exchanging and ammonium fluosilicate dealuminizing and silica-supplementing process, guarantees the framework continuity of the molecular sieve product, decreases the probability of framework structure collapse, and furthest reserves the integrity of the product, namely the silicon-aluminum-oxygen structure so that the product has very high crystallization reservation degree.

The invention discloses a method for preparing ZrO2 aerogel. The method sequentially comprises the following steps of: (1) dissolving a zirconium inorganic salt into an alcohol aqueous solvent, then sequentially adding a chelating agent, a drying control chemical additive and an epoxide and stirring for mixing; (2) carrying out a water bath on the obtained sol; (3) sequentially ageing, cleaning and soaking the sol subjected to the water bath; (4) drying the substance obtained in the step (3); and (5) carrying out heat treatment on the substance obtained in the step (4) at 400-700 DEG C for 3-8 hours to obtain the ZrO2 aerogel. In the invention, the specific surface area of the prepared ZrO2 aerogel is 400-800m<2> / g, the density is 100-500kg.m<-3>, the pore size distribution is narrow, and the ZrO2 aerogel is a nano scale. The ZrO2 aerogel has uniform and stable structure and can be widely applied to the fields of heat insulation, catalysis, environmental protection, and the like.

The invention belongs to the field of preparation of water treatment materials, and in particular relates to a preparation method of magnetized silicon dioxide aero-gel. The preparation method comprises the following steps of: with water glass as a silica source, adding nano-grade ferroferric oxide dispersed liquid and a drying control chemical additive to obtain the magnetized silicon dioxide aerogel at ordinary pressure and drying conditions through a sol-gel method and surface modification. The magnetized silicon dioxide aerogel is a nano-grade porous material, the average pore size of each pore is 3-5nm; the magnetized silicon dioxide aerogel has a saturated magnetization intensity of 0.4-0.8emu.g-1. The preparation method has low cost; and the magnetized silicon dioxide aerogel prepared by adopting the preparation method disclosed by the invention has magnetism, can realize the solid-liquid separation effectively under the action of an external magnetic field, and is suitable for mass production.

The invention relates to a surface clad lithium ion battery positive material precursor, and a preparation method and application thereof. The precursor has the composition of NixCoyMnzM1-x-y-z(OH)2, wherein x is greater than 0 and less than 0.8, y is greater than 0 and less than 0.5 and z is greater than 0 and less than 0.5; M refers to a cladding metal ion which is one or more selected from Al, Zn, Zr, Co, Ti, Sn, Mg and the like; the precursor is composed of a core part and a metal ion nanoparticle layer covering the core surface. The molecular formula of the core part is NikConMn1-k-n(OH)2, wherein k is greater than 0 and less than 0.8 and n is greater than 0 and less than 0.5. As the metal ion nanoparticle cladding layer is formed through even growth in a liquid phase, an excellent and close cladding layer can be formed on the spherical surface; the cladding layer is formed with an oxide with stable chemical properties through subsequent treatment, so that the positive material can be isolated from the electrolyte, side reaction can be reduced, dissolution of metal ions can be inhibited and collapse of the material structure in repeated charge / discharge processes can be lowered down; therefore, the cycle performance, safety performance and rate capability of the material are optimized; as a result, the material is capable of better meeting the requirements of a power battery.

The invention discloses a melting path design method for high energy beam selective melting forming. The method comprises the following steps: 1, acquisition of layered section images of a to-be-machined workpiece: layered section images of multiple layers of the to-be-machined workpiece are acquired and stored, wherein the section of each layer is a to-be-machined area; 2, contour extraction: the contour of each layer of section image is extracted; 3, melting path filling: melting path filling is performed on the multiple to-be-machined areas respectively, melting path filling for any to-be-machined area comprises the following steps: surface layer scanning path filling, inner core scanning area determining and inner core scanning path filling. The method has simple steps and is reasonable in design, convenient to implement and good in use effect; a melting path for high energy beam selective melting forming can be designed simply, conveniently and rapidly, the designed melting path is reasonable, the workpiece machining precision is high, all parts of the workpiece are uniformly heated, and the workpiece has excellent mechanical properties.

The invention discloses an MXene / conductive polymer composite aerogel. The MXene / conductive polymer composite aerogel is of an integrated three-dimensional grid structure which is formed by insertinglaminated MXene into a conductive polymer aerogel, wherein the conductive polymer comprises one or more of polyaniline, polypyrrole and polythiophene. The invention further discloses a preparation method of the MXene / conductive polymer composite aerogel. The method is characterized in that the MXene and the conductive polymer are mixed with organic solution and then are rapidly cooled and separated under heat inducing and solvent inducing effects under the inert gas protection; then the vacuum drying is carried out to obtain the MXene / conductive polymer composite aerogel.

The invention discloses a method for mining and machining a water-soluble potassium salt mine. The method disclosed by the invention comprises the following steps: firstly, exploiting the potassium salt mine by adopting a well drilling water soluble method; evaporating and crystallizing the exploited brine to sequentially precipitate a sodium salt and a potassium salt; refrigerating and crystallizing the residual feed liquid to further precipitate potassium chloride; and respectively filtering and drying the precipitated sodium salt and potassium salt to obtain finished sodium salt and potassium salt, wherein a part of mother liquor after the sodium salt and potassium salt are precipitated is used for preparing magnesium chloride, and the other part is used for preparing magnesium oxide. The method disclosed by the invention is particularly suitable for the exploitation of a potassium mine having the defects of complicated geological and hydrologic conditions, over-shallow or over-deep burial, poor quality and high carnallite content, can reduce ground collapse, improves the exploitation rate, can prepare a potassium fertilizer in a large scale and has the advantages of low energy consumption and little pollution and waste discharge.

A soft rock and soil layer jet flow guiding hole forming-chamfering-hole collapse preventing integrated drilling method comprises the following steps that firstly, a soft rock and soil layer jet flow guiding hole forming-jet chamfering-hole collapse preventing guniting integrated drilling device is machined and tested; secondly, drilling technical parameters are designed; thirdly, guniting collapse preventing slurry fluid is prepared, and the solidification performance of the slurry fluid is tested; fourthly, the integrated drilling device is installed; fifthly, integrated drilling work is carried out; sixthly, after the design depth is achieved, drilling is stopped, clean water is used for cleaning a guniting pipeline and a slurry liquid nozzle, and a rod bit is pulled out; seventhly, the drilling effect is detected. The drilling efficiency and the hole forming quality of a horizontal or oblique long drill hole in the ground and an underground soft rock soil layer are greatly improved, the construction time for the horizontal or oblique long drill hole in the soft rock soil layer is shortened, and collapse destruction time of the horizontal or oblique long drill hole in the soft rock soil layer is greatly prolonged; the drilling track deviation of the horizontal or oblique long drill hole in the soft rock soil layer is reduced.

The invention belongs to the technical field of the low-cost preparation of high-performance composite materials and relates to a gradient prepreg having an air guiding function in layer and good process operability and a preparation method of the gradient prepreg. The compound technology parameters in a prepreg preparation process are regulated and controlled, the dipping degree of resin to dry fibers is controlled, the resin is symmetrically distributed in a gradient manner in the middle layer in the thickness direction of the prepreg, the fiber is infiltrated, meanwhile, an air exhaust channel is pre-formed in a prepreg layer, and the gradient prepreg with an air guiding passage in layer can be prepared; the gradient prepreg can be formed and solidified by an out-of-autoclave process, and the forming process cost of the composite material parts can be greatly reduced.

The invention discloses an III-series nitride semiconductor device and a manufacturing method thereof. The III-series nitride semiconductor device comprises a substrate, a nitride nucleating layer located on the substrate, a nitride buffering layer located on the nitride nucleating layer, a wide band gap deep-energy-grade modulating layer located on the nitride buffering layer, a nitride channel layer located on the wide band gap deep-energy-grade modulating layer, and an electrode formed on the nitride channel layer, wherein the wide band gap deep-energy-grade modulating layer is formed by an III-series nitride semiconductor layer containing a deep-energy-grade defect; the concentration of the deep-energy-grade defect is a constant or is gradually reduced from the nitride buffering layer to the nitride channel layer; and the wide band gap width of the wide band gap deep-energy-grade modulating layer is greater than the wide band gap width of the nitride channel layer. According to the III-series nitride semiconductor device and the manufacturing method thereof, the wide band gap deep-energy-grade modulating layer is inserted between the nitride channel layer and the nitride buffering layer, so as to play the roles of controlling leaked current and reducing a current collapsing effect.

The invention discloses a dipole array acoustic logging instrument, relates to exploration technology equipment, and particularly relates to logging equipment in the aspect of oil exploration. The dipole array acoustic logging instrument comprises a transmission circuit, a transmitting transducer, a receiving transducer, a sound insulator, an acoustic signal collecting circuit and an acoustic signal processing circuit, wherein the transmission circuit stimulates the transmitting transducer to emit an acoustic wave; the receiving transducer receives the acoustic wave transmitted along the wall of a well; the acoustic signal collecting circuit collects the acoustic wave and then transmits the acoustic wave to the acoustic signal processing circuit to analyze; the sound insulator is composed of a sound insulator connecting block and a sound insulator connecting body; the transmitting transducer is an orthogonal dipole vector transducer; two groups of vector transducers of which the directive properties are vertical to each other form two measurement channels, which are respectively an X-direction channel and a Y-direction channel; the two measurement channels are vertical to each other in circumference. The dipole array acoustic logging instrument has the beneficial effects that 1 gas layer recognition is realized, i.e., the time difference of a longitudinal wave on an air layer section is large in change, but the time difference of a transverse wave is tiny in change. Therefore, the air layer can be detected according to the longitudinal and transverse wave velocity ratio VP / VS.

The invention provides a new method for mining an open-pit mine sidewall mineral below construction. The new method comprises: dividing each ore layer of the open-pit mine sidewall mineral below construction into a plurality of linear mining caverns along the inclination or trend of an ore body according to set width and height, and numbering in sequence; using mining equipment to first mine odd or even mining caverns, reserving odd or even mining caverns between even or odd mining caverns as ore pillars, performing mining-filling parallel operation on even or odd mining caverns, and filling the mined mining caverns in sequence after satisfying a filling space; when fillings in two adjacent mining caverns are solidified, then mining a mining cavern between the two adjacent mining caverns,and also performing mining-filling parallel operation on mining caverns to be mined later until multi-segment mining and filling of the various layers and thick ore bodies are completed. The mining method provided by the invention improves the strength of supporting a sidewall, reduces the risk of sidewall collapsing and landslide, has a high mineral recovery rate, and reduces pollution to environments such as atmosphere and soil.

The invention discloses a household greenhouse. The household greenhouse comprises a planting bed, a groove is formed in the lower side of the planting bed, first threaded rods are arranged on four corners inside the groove, rotating rods are arranged at the lower ends of the first threaded rods, first threaded cavities with openings formed in the upper ends are formed inside the rotating rods, the lower ends of the first threaded rods are arranged inside the first threaded cavities, rotating handles are arranged on the outer sides of the rotating rods, rotating bases are arranged at the lower ends of the rotating rods, wheel frames are arranged on the lower sides of the rotating bases, universal wheels are installed on the wheel frames, sliding grooves are formed in the left end and the right end of the lower side of the planting bed, supporting plates are arranged inside the sliding grooves, a plurality of fixing holes are formed in the supporting plates, the supporting plates penetrate through the fixing holes through bolts and are connected with the planting bed, a planting groove is formed in the upper side of the planting bed, supporting columns are arranged on four corners of the upper side of the planting bed, and a greenhouse top comprises a first glass plate and a second glass plate. The household greenhouse is simple in structure, convenient to use, suitable for a household, convenient to move, good in planting effect and high in automatic degree.

The invention relates to the field of a battery, and specifically discloses a ternary positive electrode material and a preparation method therefor and a lithium ion battery. The preparation method comprises the steps of (1) mixing tetraethyl orthosilicate, an organic solvent, water and an Ni-Co-Mn ternary material precursor; then removing the organic solvent and water from the mixture obtained by mixing so as to obtain a solid product; mixing the solid product obtained in the step (1) with a lithium salt, and calcining the mixture under an oxygen atmosphere. The invention also provides the ternary positive electrode material; the ternary positive electrode material contains Li2SiO3 and LiNiaCobMncO2, wherein a, b and c are all greater than 0 and less than 1; and a+b+c is equal to 1. The ternary positive electrode material provided by the invention has relatively high rate capability and cycling stability.

The invention discloses a fault fracture zone tunnel-section treatment structure in a TBM construction tunnel and a treatment method in the technical field of treatment of TBM construction tunnel unfavorable geological conditions. The fault fracture zone tunnel-section treatment structure comprises a tunnel and a fault fracture zone located in front of a tunnel face. A pilot tunnel is formed in the center of the tunnel face, the extending direction of the pilot tunnel is consistent with the extending direction of the tunnel, and the pilot tunnel penetrates through the whole fault fracture zone; and a pilot tunnel surrounding rock is retained and protected by sprayed concrete, a plurality of grouting drill holes are formed in the surrounding rock, one ends, away from the center of the tunnel, of the grouting drill holes exceed the periphery of the tunnel, and grouting materials are arranged in the grouting drill holes. According to the fault fracture zone tunnel-section treatment structure in the TBM construction tunnel and the treatment method, the mode that the fault fracture zone is firstly reinforced and then tunneled is adopted, the fault fracture zone is changed to be a relatively stable area and then subjected to TBM tunneling, and the characteristics of TBM rapid tunneling and retaining and protecting are fully developed; and compared with an existing treatment structure or method, the fault fracture zone tunnel-section treatment structure and the treatment method are higher in efficiency, safer in operation and lower in cost, and have good social and economic benefits.

The present invention relates to the technical field of hollow sphere preparation, particularly to a method for preparing hollow spheres through a microwave-assisted aerosol. The method comprises: A, dispersing a hollow sphere shell precursor in a polar solvent, adding an ammonium salt to form a colloidal solution or true solution, ie., a precursor solution; B, carrying out atomization on the precursor solution prepared in the step A to form aerosol liquid droplets; and C, introducing the aerosol liquid droplets prepared in the step B into a microwave generator to carry out microwave irradiation to obtain the hollow sphere powder particles. According to the present invention, the hollow sphere powder preparation method has characteristics of short production period, simple operation, no pollution, easy scale-up and easy promotion application, wherein the microstructure of the prepared hollow sphere powder is not easily damaged.

The invention provides a method for in-situ construction of a surface coating layer based on a metal-organic network framework material, which promotes in-situ growth of nanoparticles on the surface of a core structure by regulating and controlling the dynamic process, namely nucleation and growth, of a metal organic network framework structure so as to achieve the purpose of constructing a uniform coating layer on the surface of a core. By adopting the method provided by the invention, a coating layer based on a metal organic network framework material can be constructed on the surface of a conventional positive electrode material, and the prepared positive electrode material can effectively inhibit the side reaction between the electrode material and an electrolyte, slow down the generation of surface SEI, reduce the surface film impedance and charge transfer impedance, and improve the reaction kinetic process of lithium ions; meanwhile, dissolution of transition metal ions can be inhibited, collapse of a lattice structure in the circulation process of the electrode material is effectively relieved, and the circulation stability and the rate capability of the positive electrode material are remarkably improved.

The invention discloses a silica-based porous bulk for heat insulating material and a coating-dry pressing preparation method thereof. The preparation method comprises the following steps of: preparing porous silica powder through the hydrolytie polycondensation of tetraethoxysilane by using tetraethoxysilane as a precursor, a nonionic surfactant P123 as a template agent and trimethylbenzene as aswelling agent; hydro-thermally treating the silica powder so as to ensure that Si-OH in pore walls is completely polycondensed; coating the hydro-thermally treated silica powder with sol, and preparing the silica-based porous bulk for a heat insulating material by using the dry pressing method. The silica-based porous bulk is obtained by sintering the porous silica powder with oxide coated surface, wherein the oxide is alumina or titania. The mesoporous aperture of the silica-based porous bulk prepared by using the method is 21-35 nm, the mesoporous window is 10-18 nm, the total porosity is 65-82%, the mesoporosity is 80-99%, and the tensile strength is 45-180 MPa.

The present invention comprises a method of reducing photoresist mask collapse when the photoresist mask is dried after immersion development. As feature sizes continue to shrink, the capillary force of water used to rinse a photoresist mask approaches the point of being greater than adhesion force of the photoresist to the ARC. When the capillary force exceeds the adhesion force, the features of the mask may collapse because the water pulls adjacent features together as the water dries. By depositing a hermetic oxide layer over the ARC before depositing the photoresist, the adhesion force may exceed the capillary force and the features of the photoresist mask may not collapse.

The invention discloses a subway foundation pit anchor rope processing method. The subway foundation pit anchor rope processing method is characterized by adopting a construction scheme of carrying out high-pressure rotary-spraying strengthening on slot walls of an underground continuous wall and directly breaking an anchor rope in a grabbing mode by a hydraulic slot-forming machine; measures of isolating insertion type steel in high-pressure rotary-spraying piles are taken before processing the anchor rope and processing a waste sewage pipe, so that optimal configuration of engineering resources is realized; meanwhile, in order to reduce collapse of the slot walls during the anchor rope processing period, two rows of high-pressure rotary-spraying piles are arranged at the two sides of each slot wall of the underground continuous wall within an anchor rope influence range to carry out ground-layer strengthening; cement content within the straightened regions of the high-pressure rotary-spraying piles is not smaller than 30%; the slot-forming machine is adopted to carry out foundation pit slot excavation on the ground layers of the slot walls at the two sides of the underground continuous slot wall, so that the anchor rope is processed in layers and in sections; and during foundation pit slot excavation, the anchor rope is ensured to be sheared off or broken by a hydraulic grab bucket of the slot-forming machine, and finally, the foundation pit slot is backfilled; and the safety of subway foundation pit construction is effectively protected, and the overall plan is economical.

The invention relates to a hydraulic punching method and a hydraulic punching device capable of keeping wall flatness of a workpiece. The hydraulic punching device is arranged in a stepped cavity of an upper die body, wherein the stepped cavity comprises a first sub-cavity, a second sub-cavity, a third sub-cavity and a fourth sub-cavity, and the upper die body and a lower die body are matched to form a cavity for clamping the workpiece; the hydraulic punching device comprises a punching head body which is arranged in the first sub-cavity and the second sub-cavity, a transverse elastic sliding component which is arranged in the third sub-cavity and a piston ejector rod component which is arranged in the fourth sub-cavity and the punching head bodies in a penetrating way; the piston ejector rod component is elastically restrained and positioned by the transverse elastic sliding component; the punching head body moves upwards when the workpiece raises upwards under the effect of internal hydraulic pressure of the punching head body; the piston ejector rod component pushes the punching head body to move downwards to remove a raised part and form a punched hole when a piston is subjected to downward driving force. The hydraulic punching method and the hydraulic punching device capable of keeping the wall flatness of the workpiece have the advantages that since a punching rod is enabled to firstly move upwards and then move downwards to realize punching by using one punching stroke, a hole mouth is prevented from being collapsed, the flatness and the precision of the wall of a pipe are kept, and the hydraulic punching efficiency is improved.

The invention belongs to the field of thermal insulation materials, and discloses a preparation method of an aluminum oxide-silicon oxide aerogel composite material, wherein after preparing silicon dioxide gel is prepared, the surface of the silicon dioxide gel is continuously impregnated with an aluminum sol mixed solution, and compounding is carried out by using a method of coating the silicon dioxide aerogel with aluminum oxide aerogel; Si-OH and Si-OR bonds (wherein R is alkyl) on the surface of the silicon dioxide gel can react with -Al-O- bonds to form a silicon and aluminum aerogel composite network structure, a silicon dioxide aerogel network framework can play a role in supporting an aluminum oxide aerogel framework, the situation that the aluminum oxide aerogel structure collapses at the high temperature at present is reduced, and meanwhile, the aluminum oxide aerogel skeleton also improves the mechanical property of the silicon dioxide aerogel. Besides, the aluminum oxide aerogel is arranged on the outermost layer of the composite gel, approximately forms a gradient structure and can well protect the silicon dioxide aerogel network structure at high temperature, and the aluminum oxide aerogel and the silicon dioxide aerogel cooperate with each other to jointly improve the heat insulation and mechanical properties of the composite material.

The invention relates to an intelligent rapid formation flow control method based on a line width measurement. The existing method rebuilds the appearances of auriclea and original ears or has large colour and luster difference, so that a wearing effect is influenced. The intelligent rapid formation flow control method provided by the invention comprises the following steps of: detecting line width of an extrusion material in deposition manufacture through a sensor, sending the obtained data to a singlechip so as to compare the data with preset reference data, thus obtaining a deviation, and finally, controlling a scanning motion motor according to the preset judgement standard. The intelligent rapid formation flow control method provided by the invention can reduce collapse caused by insufficient flow and excessive pile caused by large flow, so that the precision and surface quality of a formed piece are greatly improved.

The invention discloses an array substrate, a display panel and a display device, which are used for reducing damage to a substrate during the fabrication process of a pixel defining layer and preventing an edge of an electrode layer from being collapsed so as to further improve the working stability of a product. The embodiment of the invention provides the array substrate. The array substrate comprises a substrate, electrode layers, block-up layers and pixel defining layers, wherein electrode layers are arranged on the substrate and are arranged in an array way, the block-up layers are arranged on the substrate and are isolated with the electrode layers at intervals, the pixel defining layers are arranged on the block-up layers, and the electrode layers are in contact with the block-up layers.

The invention relates to a secondary coal-mining method for reversely filling paste in stripes. The secondary coal-mining method is suitable for the safe recovery of coal resources under buildings, railways and water bodies. The secondary coal-mining method comprises the following steps of: determining the range of mining coal under building groups according to regulations, and alternatively partitioning paste filling stripes and recovery stripes in the determined coal mining range; sequentially mining the partitioned paste filling stripes and filling mine-out areas of the partitioned paste filling stripes; and sequentially drilling without section pillar along the two paste filling strips and mining the recovery stripes by a caving method after a filler in the past filling stripes is completely solidified. Under usual conditions, the paste filling stripes are wider, and normal recovery stripes are narrow. By the method, the damage to the surface buildings caused by mining subsidence can be effectively reduced, the safety of coal mining can also be ensured without reserving narrow coal pillars, so that the coal resource is completely recovered; and simultaneously, coal resources utilization of solid wastes such as coal gangues and fly ash is realized.