64results about How to "Increase filling volume" patented technology

The invention belongs to but not limited to the technical field of electrode materials, and particularly relates to a high-tap-density lithium nickel manganese oxide positive electrode material, a preparation method and a lithium ion battery, the chemical general formula of the high-tap-density lithium nickel manganese oxide positive electrode material is LiNi < 0.5-x > Mn < 1.5-y > M < x > N < y > O < 4 >, 0.1, 0 < = y < lt >; 0.1, M and N are doping elements and comprise one or more of Mg, Co, Al, Zr, W, Sb, Ta and Ti; the material is micron-sized spherical secondary particles formed by stacking and aggregating nano-sized octahedral primary particles, and is uniformly dispersed without agglomeration; the spherical secondary particles are formed by mixing spherical secondary particles with large and small particle size distribution, and the average particle size range of the large particles is 3lt; d < 50lt >; the average particle size range of the small particles is 1lt; d < 50lt >; 2 [mu] m.

The invention discloses a method for preparing low-viscosity vinyl fluorine-containing hyperbranched organic silicon resin, and belongs to the technical field of organic polymer materials. The low-viscosity vinyl fluorine-containing hyperbranched organic silicon resin is prepared by taking a vinyl-containing siloxane monomer, an alkyl-containing siloxane monomer and a fluorine-containing siloxane monomer as raw materials through hydrolysis nucleation, condensation growth, end capping and purification treatment. Wherein the content of vinyl is not lower than 3 wt%, the content of fluorine is not lower than 15 wt%, and the viscosity is not higher than 1000 mPa.s. The vinyl fluorine-containing hyperbranched organic silicon resin disclosed by the invention is used as a material with excellent characteristics of both vinyl organic silicon resin and a fluorine-containing polymer, the existence of vinyl can be suitable for various reaction conditions, the existence of a fluorine-containing group enables the vinyl fluorine-containing hyperbranched organic silicon resin to have excellent hydrophobic and oleophobic properties, and meanwhile, the fluorine-containing polymer material is relatively small in friction coefficient, so that the vinyl fluorine-containing hyperbranched organic silicon resin can be applied to various reaction conditions. The method has great application potential in the fields of oil-resistant sealing, anti-corrosion coatings, electronic materials, medical apparatuses and instruments and the like.

The invention discloses a continuous boxing and compacting device for vacuum dampening tobacco leaves. The continuous boxing and compacting device comprises a chain conveyor (16), a first box body (6), a second box body (7), a third box body (8), a first blanking hopper (1), a second blanking hopper (5), a bidirectional tobacco leaf conveying belt (3), a pneumatic clamping device (9), a buffer device (12), a first vibration motor (19) and a second vibration motor (14). The invention further discloses a method for continuously boxing and compacting the tobacco leaves by using the device. By means of the device and method, the technical problem of loose tobacco leaf boxing can be effectively solved, continuous boxing and compaction of vacuum dampening tobacco leaves are achieved, meanwhile, the tobacco leaf boxing precision and the tobacco leaf quality are guaranteed, it is guaranteed that the tobacco leaf weight and distribution meet the strict requirements of a vacuum dampening process production line, and the production efficiency is improved. And the production efficiency and the stability of the product quality are improved.

The utility model discloses a firework powder filling device which comprises a box body. The fixed block is rotationally arranged in the box body; the fixed blades are circumferentially arrayed on the side wall of the fixed block; the rotating blades are arranged on the side wall of the fixed block in a circumferential array mode and are in running fit with the fixed block, and gaps between the rotating blades and the fixed blades form cavities. According to the firework powder filling device, in the continuous rotating process, the powder collected in the cavities is filled into the gun barrel, the sizes of the cavities formed between the rotating blades and the fixed blades are uniform, the powder amount filled in each firework is uniform, and when the powder amount filled in the fireworks needs to be increased, the firework powder filling device is convenient to use. The rotating blade is driven to rotate clockwise along the fixed block, so that the rotating blade and the fixed blade are combined, the two cavities are combined to increase the collection amount of the medicament, the filling amount of the firework medicament can be rapidly increased, and the situation that the production efficiency is reduced due to long-time debugging of the filling device is avoided.

The invention discloses a preparation method of a high-temperature-resistant heat-conducting polyimide gasket, which comprises the following raw materials: 4, 4 '-diaminodiphenylmethane (MDA), 3, 3', 4, 4 '-benzophenonetetracarboxylic dianhydride (BTDA), hexagonal boron nitride (BN) and hydrogen-containing polyether silicone oil, and comprises the following steps: S1, in an aprotic polar solvent and under the protection of a nitrogen environment, adding diamine and dianhydride, and carrying out a primary reaction; s2, dispersing heat-conducting powder and a stabilizer in the dispersion liquid, and then sequentially mixing with the resin prepared by the primary reaction in the step S1; s3, carrying out filtration and vacuum defoaming on the resin obtained in the step S2, uniformly coating the resin into a special mold, and carrying out heat treatment by using a hot-pressing instrument to form a thin film; s4, after the thin film in the step S3 is subjected to heating imidization, the heat-conducting polyimide gasket is obtained; the gasket has the effects of excellent high-temperature resistance and insulation characteristics, and the heat-conducting property of the gasket is improved; the product strength is improved; and the BN powder is not easy to fall off.

The invention discloses a copper-clad plate, a resin composition for the copper-clad plate, spherical silicon and a preparation process of the spherical silicon, and belongs to the technical field of copper-clad plates. The spherical silicon is composed of spherical silicon dioxide and zinc molybdate particles growing on the surface of the spherical silicon dioxide in an in-situ dispersion mode, the diameter of the spherical silicon dioxide is smaller than 10 micrometers, D50 ranges from 0.6 micrometer to 6 micrometers, the content of zinc molybdate in the unit area of the surface of the spherical silicon dioxide is 0.03 g / m < 2 > to 1 g / m < 2 >, and the size of the zinc molybdate particles is smaller than or equal to 400 nm. The preparation process comprises the following steps: contacting / mixing spherical silicon dioxide with soluble molybdate and zinc salt in a water-based reaction system; and carrying out in-situ reaction on soluble molybdate and zinc salt on the surface of the spherical silicon dioxide to form spherical silicon chemically coated with zinc molybdate particles. According to the method, the zinc molybdate is directly synthesized on the surface of the spherical silicon dioxide in situ through a hydrothermal method, so that the structural morphology of the obtained spherical silicon and the size of zinc molybdate particles can be effectively controlled, and further it is guaranteed that drill bit abrasion is effectively improved when the copper-clad plate is drilled.

The invention belongs to the field of silane-modified adhesives, and relates to a high-strength and high-toughness silane-modified sealant and a preparation method, wherein the sealant comprises components by weight: 10-40 parts of silane-modified resin; 30-70 parts of nano-calcium carbonate; 0.1-2 parts of surface modifier; 1-20 parts of plasticizer; 0.1-2 parts of UV-resistant aging agent; 0.1-2 parts of antioxidant; 0.5-10 parts of reinforcing and toughening agent; 1-10 parts of water-removing agent; 1-15 parts of coupling agent; 0.01-5 parts of catalyst; and the surface treatment agent is an aluminate treatment agent. The present invention improves the compatibility of inorganic powder and silane-modified resin, increases the filling amount of inorganic filler, and retains the good mechanical properties of the material through a homemade surface treatment agent; adds a reinforcing and toughening agent containing a reactive group, improves the plasticity of the sealant before the reaction, and after participating in the reaction, free migration will not occur, improves the strength and flexibility of the glue, increases the elongation, and improves the bonding performance with a variety of substrates.

The invention relates to a high-performance carbon-carbon composite material and a preparation method thereof, and the preparation method comprises the following steps: (1) carrying out controlled deposition shaping on a carbon fiber woven body by adopting a CVD (Chemical Vapor Deposition) method to obtain a preformed body; (2) carrying out impregnation-carbonization densification cycle treatment on the preformed body by adopting an impregnant containing a carbon nano tube to obtain a compact carbon-carbon composite material; and (3) depositing the carbon-carbon composite material by adopting the CVD method again to obtain the high-performance carbon-carbon composite material. According to the invention, the CVD and impregnation-carbonization combined process is adopted, so that the manufacturing time can be greatly shortened, and the defect of long time of a pure CVD process is overcome; the density of the initial CVD preform is optimized, so that the proportion of an impregnant entering a matrix in the impregnation process is increased; the carbon residue rate of the impregnant is increased by further adding the carbon nanotubes into the impregnant, the defect of low carbon residue rate of the currently used impregnant is overcome, the cycle index of the impregnation-carbonization process is reduced, the time is saved, and the cost is reduced.

The invention provides an electric driving system and a vehicle, relates to the technical field of vehicles, and aims to improve the working efficiency of the electric driving system. The electric driving system comprises a shell, a stator, a rotor, a motor shaft, an end cover, a bearing and an oil collecting device. The shell is provided with a containing space. The stator is arranged in the accommodating space. The stator sleeves the periphery of the rotor. The rotor is sleeved on the motor shaft. The end cover is fixed at the end part of the shell, the end cover is provided with a lubricating space, and the motor shaft extends into the lubricating space. The oil collecting device is located between the motor shaft and the stator and fixed to the end cover, the oil collecting device is provided with an oil collecting groove, the bottom wall of the oil collecting groove is provided with an oil collecting hole, at least part of the oil collecting groove right faces the stator so as to collect cooling oil flowing down from the stator, and the oil collecting hole is communicated with the lubricating space. Therefore, the cost of the electric driving system can be reduced, and the cleanliness in the accommodating space can be improved. And meanwhile, the pressure drop of the electric driving system can be reduced, and the consumption of the lubricating flow of the electronic pump can be avoided.

The invention discloses a high-strength and high-toughness polypropylene 3D printing wire and a preparation method thereof.The preparation method comprises the steps that thermoplastic elastomer TPU coated glass fibers, a compatilizer, tackifying resin, an antioxidant and other components are introduced into a polypropylene matrix, mixed extrusion is conducted through a double-screw extruder, and then the filamentous printing wire is extruded through a single-screw extruder. The raw materials are easy to obtain, the preparation process is simple and efficient, the cost is low, and the prepared polypropylene wire has high strength and high toughness, can be widely and stably applied to the field of 3D printing, and has wide application prospects in the aspect of high-strength and high-toughness structural parts.

The utility model relates to the technical field of graphitization furnaces, and aims to solve the problems that the existing graphitization furnace is non-uniform in resistance material filling, non-uniform in temperature rise in a furnace body, limited in cathode material filling amount in a crucible and low in effective utilization rate of a space in the furnace. The utility model provides a graphitization furnace for an artificial graphite cathode material. The graphitization furnace comprises a furnace body and a plurality of square crucibles, the plurality of square crucibles are distributed in the furnace body in a matrix manner; a plurality of square crucibles in the same row are connected in series through a first connecting assembly; the plurality of square crucibles in the same column are connected through a second connecting assembly; the first connecting assembly is clamped with the second connecting assembly; a resistor filling layer is arranged between every two adjacent rows of square crucibles; a thermal insulation layer surrounding the plurality of square crucibles is arranged in the furnace body; according to the graphitization furnace for the artificial graphite cathode material, the square crucible with the filling amount higher than that of a traditional round crucible is adopted, the effective space in the furnace is fully utilized, the graphitization furnace is more durable, and the use frequency of the graphitization furnace is higher than that of the traditional round crucible.

The utility model provides an electric connector, which comprises a shell with an installation cavity, a tubular shielding conductor inserted in the installation cavity, an insulator inserted in an inner cavity of the shielding conductor and provided with an insertion cavity, and a contact pin inserted in the insertion cavity, the pin and the shielding conductor are coaxially arranged, and the housing and the shielding conductor, the shielding conductor and the insulator, and the insulator and the pin are fixedly connected through glue injection. According to the electric connector provided by the utility model, the space among the parts can be filled by utilizing the fluidity of the glue, and the step positioning among the parts is combined, so that the parts can be bonded and fixed after the glue is cured, and the air tightness requirement can be met, thereby improving the sealing and isolating effects of the electric connector.

This application discloses a corner protector clip device. The corner protector clip device includes a first fixed baffle, a second fixed baffle, a third fixed baffle, and a movable door panel. The first, second, and third fixed baffles are sequentially connected to form a groove-like structure. The movable door panel is rotatably connected to either the first or third fixed baffle, and can cooperate with either the third or first fixed baffle to close the groove-like structure. This application is used for loading corner protectors. The inner wall of the corner protector clip device is smooth, allowing the corner protectors to move smoothly within the device, reducing or avoiding jamming, and greatly improving worker efficiency. The time required to add corner protectors per cycle is reduced from 5 minutes in traditional technology to less than 3 minutes. The device is smooth, suitable for various corner protector brands, and significantly improves operational safety and convenience.

The invention discloses a preparation method of a high-rigidity PP hollow grid plate based on dolomite grading enhancement, which comprises the following steps: based on the design of multistage inorganic powder grading filler, taking dolomite powder, calcium carbonate and talcum powder, stirring and premixing to obtain a premix, then adding ionic liquid, and heating by stirring type microwave equipment to obtain the high-rigidity PP hollow grid plate based on dolomite grading enhancement. Then adding a surfactant and an organic oligomer, and continuing to stir and react to obtain a surface activated and modified graded filler; the preparation method comprises the following steps: stirring and blending the graded filler and PP resin to obtain a blended material, and then adding the blended material into a closed rubber mixing mill for pre-plasticizing treatment to obtain a mixture melt; the mixture melt is subjected to vibration compaction treatment and then plasticized and granulated again, plastic master batches are obtained, the plastic master batches and PP resin are taken to be mixed and then subjected to melt extrusion, and the hollow grid plate is obtained through mold forming. The invention aims to solve the problems in the traditional PP hollow grid plate preparation process and improve the comprehensive performance of the hollow grid plate by optimizing the grading of the filler and regulating and controlling the interface characteristics.

The utility model relates to the field of fuses, in particular to a melt structure of a high-speed fuse, which comprises a metal fuse piece. A V-shaped groove is bent at the center of the metal fuse piece along the long edge direction, and the metal fuse piece is filled with a tin bar in the V-shaped groove; a plurality of groups of row holes are formed in the metal fuse piece at intervals along the length direction of the metal fuse piece, the V-shaped groove and the tin bar are positioned between two groups of row holes in the middle, and a narrow diameter is formed between adjacent holes of each group of row holes; the aperture of the two groups of row holes located in the middle is larger than the aperture of the other groups of row holes, the outer sides of the two groups of row holes located in the middle are respectively provided with two insulating rubber strips, and the insulating rubber strips are fixedly connected with the metal fuse piece. According to the fuse structure, rapid fusing can also be realized for small-multiple overload current, and a relatively strong circuit protection effect is achieved.

The invention discloses a radial mesh type liquid oxygen solid mixture configuration and a preparation method thereof, and belongs to the technical field of liquid oxygen rock breaking operation. In order to effectively improve the safety and energy release efficiency of liquid oxygen blasting, the method comprises the following steps: selecting a solid filler; pre-treating the powdery filler, namely drying and sieving to obtain the pre-treated powdery filler; adding a certain mass of an adhesive into the pretreated powdery filler, and uniformly mixing to obtain a mixed powdery filler; uniformly filling the mixed powdery filler into a forming mold or punching the fibrous filler, and then carrying out compression molding by using a pressing machine to obtain a compression-molded radial mesh type liquid oxygen solid mixture configuration; and drying treatment is carried out, and then surface treatment is carried out, so that a final radial mesh type liquid oxygen solid mixture configuration is obtained. The liquid oxygen can uniformly flow in the meshes, and the situation that the local concentration is too high or too low is avoided.

This invention belongs to the field of new energy and renewable energy development technology, and relates to a dual-source power generation device that combines raindrop cascade power generation with atmospheric moisture absorption, desorption, and condensation of water droplets. It includes: a housing, a droplet power generation array, a condensation chamber, and an energy storage and monitoring system disposed inside the housing, and a photovoltaic composite panel disposed on the top of the housing; the droplet power generation array includes a support plate disposed inside the housing and multiple droplet power generation units, which are arranged in an array on the upper surface of the support plate; the photovoltaic composite panel is movably connected to the housing; the photovoltaic composite panel is a composite panel composed of a photovoltaic panel, a heat-conducting plate, and a fiber layer; the heat-conducting plate is disposed between the photovoltaic panel and the fiber layer; the energy storage and monitoring system is electrically connected to the droplet power generation array and the photovoltaic panel respectively, and is also electrically connected to an external energy storage device or load. This invention alleviates the technical problems of low energy conversion efficiency and poor all-weather stability existing in the prior art.

The invention belongs to the technical field of electroacoustics, and particularly relates to a sound absorption assembly, a sound production device and electronic equipment, and the sound absorption assembly comprises a shell, and active carbon powder particles with the average particle size of 1-50 microns and sound absorption particles with the average particle size of 200-450 microns which are mixed and filled in an internal accommodating space of the shell, the sound-absorbing particles are sphere-like particles formed by bonding a plurality of molecular sieve powder particles, the surface layers of the active carbon powder particles have hydrophobic structures, the bulk density of the active carbon powder particles is 0.2-0.6 g / cm < 3 >, and the ratio of the bulk density of the active carbon powder particles to the bulk density of the sound-absorbing particles is 0.7-1; the shell is provided with air holes communicated with the containing space, and the hole diameter of the air holes is smaller than the minimum particle diameter of the activated carbon powder particles. The activated carbon particles can be filled in gaps generated by accumulation of the sound-absorbing particles, the low-frequency acoustic performance of the sound production device is improved, even if the sound-absorbing particles are broken, the shell can play a good isolation role, and the sound production monomers are prevented from being polluted by broken powder.

The utility model provides a gantry type drilling mechanism for a numerical control gang drill, which belongs to the field of wood-working machinery and comprises a portal frame crossing a working table of the numerical control gang drill, a cross beam of the portal frame is positioned above the working table and is provided with a sliding hanging bracket in a sliding manner, and the sliding hanging bracket is provided with a driving component. The driving assembly is provided with the gang drill package in a transmission mode and drives the gang drill package to be close to or away from the workbench, the gang drill package and the related driving assembly are separated from the workbench through cooperation of the portal frame and the sliding hanging bracket, and the situation that the driving assembly occupies the space of the workbench and hinders feeding and discharging of the conveying structure can be avoided; the assembling flexibility of the numerical control gang drill is improved, and the machining efficiency is improved to a certain degree.

The utility model provides an insulation board, an energy storage container and an energy storage system, the insulation board comprises an inner layer board and an outer layer board which are buckled and connected, and a middle layer board arranged between the inner layer board and the outer layer board; the middle-layer plate comprises a main plate body and a protruding part arranged on the main plate body, the protruding part is formed by protruding the main plate body towards the outer-layer plate, and a gap between the inner-layer plate and the middle-layer plate and a gap between the middle-layer plate and the outer-layer plate are filled with fireproof heat preservation materials. The thermal insulation board provided by the utility model has good structural strength and thermal insulation effect, and has higher practicability.

The invention discloses insulating impregnating varnish. The insulating impregnating varnish comprises a first component and a second component, the first component comprises an epoxy compound, polyesterimide resin and a cross-linking agent, and the second component comprises a curing agent; the polyesterimide resin is prepared from the following raw materials: iminodiacetic acid dialkyl ester, unsaturated dibasic acid, saturated dibasic anhydride, amino-containing aromatic dibasic acid and a monohydric alcohol end-capping reagent, high-content and uniformly-distributed imino groups can be obtained in a main chain of the polyesterimide resin, and more uniform cross-linking sites are provided; compared with the prior art, the insulating impregnating varnish provided by the invention has the advantages that the insulating impregnating varnish is high in varnish hanging amount and has excellent electromechanical properties, heat resistance, degradation resistance, weather resistance and the like, and more chemical bonds can be formed among molecular chains of polyester-imide resin, and the imino group promotes double-bond free radical polymerization and ring-opening polymerization reaction of epoxy groups at the same time.

The invention relates to an interbody fusion cage which is used for being placed between two vertebral bodies arranged at intervals in the first direction and comprises a fusion cage body abutting face, a fusion cage main body abutting face and a fusion cage main body abutting face, the bone grafting hole penetrates through the fusion cage body in the first direction, the hole wall of the bone grafting hole comprises a plurality of convex areas and a plurality of concave areas, the bone grafting hole is provided with a datum plane, the convex areas protrude out of the datum plane, and the concave areas are concave in the datum plane; the sum of the volume of a first space defined by all the convex areas and the datum plane is larger than the sum of the volume of a second space defined by all the concave areas and the datum plane. According to the interbody fusion cage, the larger contact area between the interbody fusion cage and the vertebral body and the larger bone grafting hole volume can be considered.

The invention discloses a preparation method of a soft skin care fabric, and relates to the technical field of textile materials. When the soft skin care fabric is prepared, firstly, hydroxymethyl triethoxy silane, dimethyl dimethoxy silane and methyl vinyl dimethoxy silane react and then react with 4-hydroxythiophenol to prepare sulfydryl vinyl polysiloxane, ferric chloride, ferrous chloride and tetrabutyl titanate react to prepare the soft skin care fabric. The preparation method comprises the following steps: carrying out a reaction on poly (1, 3-butadiene), TPU polyurethane, polyethylene terephthalate and modified composite nanoparticles in sequence to obtain modified composite nanoparticles, spinning poly (1, 3-butadiene), TPU polyurethane, polyethylene terephthalate and the modified composite nanoparticles, and carrying out a spinning process to obtain the high-temperature-resistant polyurethane composite material. Then reacting with modified vinyl-terminated polydimethylsiloxane modified by allyldimethoxysilane and triethoxysilane, and tetraethoxysilane, and weaving to obtain the soft skin care fabric. The soft skin-care fabric prepared by the invention has excellent softness, moisture retention and electromagnetic radiation resistance.

The utility model provides a kind of superfine powder filling machine and including its graphitization furnace, superfine powder filling machine includes: lower hopper is installed in the upper end portion of outer shell body, for conveying downward and forcedly downward powder material;Material collecting cover is installed in the lower end portion of outer shell body, for collecting compressed powder material;Multi-stage pair of rollers are sequentially arranged from top to bottom along the inner wall surface of outer shell body, and each stage pair of rollers includes at least two opposite rotating rollers;Driving device is connected with pair of rollers, for driving pair of rollers to rotate;Pair of rollers and lower hopper form a cavity, vacuum equipment is installed at the cavity, for extracting gas in powder material, and make the negative pressure in working area form.The utility model adopts the way of pair of rollers step-by-step compression under negative pressure state, make gas discharge more easily in superfine powder compression process, to improve compression efficiency.It can greatly improve the filling amount of negative electrode material in crucible, to effectively reduce the power consumption of negative electrode material graphitization process, reduce graphitization production cost.

The invention relates to the field of coatings, and particularly discloses an environment-friendly anti-radiation coating for buildings and a preparation method thereof.Renewable vegetable fat is used as an epoxy resin modifier and compounded with acrylic acid to generate bio-based acrylic resin, and the bio-based acrylic resin is combined with an organosilicon polymer; spherical hollow nano titanium dioxide prepared by taking a nano carbon sphere template as a template is subjected to surface carboxylation modification and then is combined with graphene oxide to cooperate with multiple anti-radiation components, so that the defects that an anti-radiation coating is easy to decompose and migrate and is non-uniform in dispersion are effectively overcome, and the anti-radiation performance of the coating can be remarkably improved; meanwhile, the heat resistance and the strength are excellent, the service life is not prone to being shortened even if the cable is exposed in the natural environment, and the preparation method is simple and suitable for large-scale application and popularization.

The invention relates to the technical field of new materials and application thereof, in particular to a low-thermal-resistance interface material with high vertical application reliability and a preparation method of the low-thermal-resistance interface material. The invention discloses a low-thermal-resistance interface material with high vertical application reliability. The low-thermal-resistance interface material is prepared from the following components in percentage by mass: 0.3 to 2 weight percent of thermoplastic elastomer, 0.8 to 3 weight percent of hydrocarbon tackifying resin, 0.5 to 1.2 weight percent of antioxidant, 3 to 5 weight percent of plasticizer and the balance of modified heat-conducting filler, the modified heat-conducting filler comprises modified aluminum powder and modified zinc oxide. The low-thermal-resistance interface material with high vertical application reliability is used for solving the problems that the thermal resistance is increased and the heat dissipation capability is reduced due to the fact that an existing heat-conducting interface material is prone to a vertical flow gliding phenomenon due to the influence of factors such as material viscosity and too low cohesion or too fast phase change viscosity reduction of the material and the gravity effect. The low-thermal-resistance interface material not only has higher thermal conductivity and extremely low thermal resistance in the use process, but also has excellent vertical application reliability and cracking and gliding resistance.

The invention belongs to the technical field of high polymer materials, and particularly relates to a composite aerogel material as well as a preparation method and application thereof. The composite aerogel material has a core-shell structure and comprises aerogel and an organic silicon resin coating layer coating the surface of the aerogel, the coverage rate of the organic silicon resin coating layer on the surface of the aerogel is greater than or equal to 90%. The filling amount of the aerogel in low-specific-gravity products such as low-specific-gravity pouring sealants and low-specific-gravity coatings can be increased, meanwhile, the low-specific-gravity characteristic is kept, and the defects that traditional aerogel is difficult to fill, low in strength, prone to structural damage and the like are overcome.

A radial mesh liquid oxygen solid mixture configuration and a preparation method thereof, belonging to the technical field of liquid oxygen rock breaking operations. In order to effectively improve the safety and energy release efficiency of liquid oxygen blasting, the present invention includes selecting a solid filler; pre-treating the powdered filler, including drying and sieving, to obtain a pre-treated powdered filler; adding a certain mass of adhesive to the pre-treated powdered filler, and mixing evenly to obtain a mixed powdered filler; filling the mixed powdered filler evenly into a molding mold or punching the fibrous filler, and then using a press to press and mold, to obtain a pressed radial mesh liquid oxygen solid mixture configuration; drying and then surface treatment, to obtain the final radial mesh liquid oxygen solid mixture configuration. The liquid oxygen of the present invention can flow evenly in the mesh to avoid the situation where the local concentration is too high or too low.

The invention discloses a filter unit and a filter box. The filter unit comprises a filter module and a filter material amplification module, the filtering module is provided with an outer side filtering assembly and an inner side filtering assembly, and a filtering space is formed between the outer side filtering assembly and the inner side filtering assembly; the filter material amplification module is combined with one of the outer side filter assembly and the inner side filter assembly, and the filter material amplification module is provided with an expansion space communicated with the filter space; the filter box comprises the filter unit and a fixing unit, the fixing unit comprises a plurality of fixing side frames and a mounting frame, every two fixing side frames are assembled on the two sides of the filter module respectively so as to fix the outer side filter assembly and the inner side filter assembly, and the filter unit is fixed in the mounting frame through the fixing side frames so as to fix the outer side filter assembly and the inner side filter assembly. Therefore, the internal space volume of the filtering unit is increased, and the filtering efficiency is improved.