46results about How to "Small aperture" patented technology

The application discloses a mesoporous carbon preparation process with recyclable silicon source and mesoporous carbon with small pore size and large specific surface area. The mesoporous carbon preparation process comprises the following steps: preparing a silicon template: reacting a fluosilicic acid solution with calcium carbonate, and separating calcium fluoride precipitate and silica sol; the pH of the silica sol is 2-5; the concentration of silicon dioxide in the silica sol is 1-8 wt%; preparing a precursor: dissolving a carbon source and an organic acid in the silica sol, drying, grinding, and carbonizing in an inert atmosphere to obtain a C / Si precursor; the organic acid comprises at least one of oxalic acid, tannic acid, acetic acid and citric acid; removing the silicon template and recycling the silicon source: treating the C / Si precursor with hydrofluoric acid, and performing solid-liquid separation to obtain mesoporous carbon and a fluosilicic acid solution, wherein the fluosilicic acid solution is used for preparing the silicon template. The specific surface area of the mesoporous carbon is greater than 800 m 2 / g, and the pore size is less than 6 nm.

This invention discloses a high-definition lens, comprising a first lens, a first cemented lens group, an aperture stop, a fourth lens, and a fifth lens arranged sequentially from the object plane to the image plane; wherein the first lens and the fourth lens have negative optical power; the first cemented lens group and the fifth lens have positive optical power, and the fifth lens has a biconvex structure; the focal length of the lens is f, and the focal length of the first cemented lens group is f. U1 f U1 The following relationship exists between f and f: 0.35 < |f U1 / f|<0.90. The lens formed by this invention is not only compact and economical, but also ensures high imaging resolution, small aperture and low distortion, which can meet the needs of industrial applications and has great market prospects and economic value.

The laser chip and its fabrication method disclosed herein include a first reflective layer, an active region, an oxide layer, and a second reflective layer sequentially disposed on a substrate. The laser chip has a first trench and a second trench for oxidizing and etching the oxide layer. A first connecting portion connects one end of the first trench to one end of the second trench, and a second connecting portion connects the other end of the first trench to the other end of the second trench. Due to the influence of crystal anisotropy on the oxidation rate, and the mutual coordination of the first and second connecting portions on the oxidation rate, the oxide aperture includes a first oxide arc, a second oxide arc, a third oxide arc, and a fourth oxide arc. The first and second oxide arcs are arranged opposite each other, as are the third and fourth oxide arcs. The third and fourth oxide arcs have different radii of curvature, forming a specific irregular morphology. The oxide aperture based on the irregular morphology can effectively suppress transverse multimode lasing of the optical signal and reduce mode degeneracy.

The application discloses a kind of low basis weight high-density fiber material preparation methods, the fiber material includes fiber layer and hot melt powder layer;The fiber layer is filled with superfine powder;Including the following steps: (1) polyvinyl alcohol ultra-short fiber, polyester superfine ultra-short fiber, fine denier ultra-short cellulose fiber are made into mixed slurry, then wet-laid web is made;(2) the wet-laid web is consolidated into intermediate material, then the intermediate material hot water bath is made, and polyvinyl alcohol ultra-short fiber is dissolved;(3) superfine powder is made into suspension, and filled into intermediate material;(4) hot melt powder is made into suspension slurry and coated and fixed.Reduce the unit area mass of material, increase the density of material under low basis weight, utilize the thermal closing pore effect of superfine powder, ensure the safety of battery separator product.Realize the technical requirement of low basis weight, high density and high porosity, solve the problem that existing fiber material cannot meet the use requirement of battery separator.

This invention relates to the field of refractory materials technology, and more particularly to a cementless magnesia castable and its application method. The castable consists of aggregate, matrix material, and a water-reducing agent; the aggregate is 60-80 parts of magnesia particles; the matrix material is: fine magnesia powder, active α-Al₂O₃ micro powder, sintered corundum powder, silica micro powder, and aluminum-based metal microcapsules. The application method of the cementless magnesia castable is as follows: the water-reducing agent and matrix material are mixed evenly to obtain a premixed matrix material; the aggregate and premixed matrix material are stirred evenly, water is added and wet-mixed to obtain a slurry; the evenly mixed slurry is poured into a mold, vibrated to form the slurry, and then cured. This cementless magnesia castable exhibits certain initial strength, excellent high-temperature performance, excellent resistance to slag erosion and thermal shock, and a long service life, making it widely applicable in tundishes and ladles.

This invention provides a method for preparing bamboo fiber for textiles, belonging to the field of fiber extraction technology. The preparation method includes bamboo strip pretreatment, enzyme immobilization, and bamboo fiber extraction. The bamboo strip pretreatment method is as follows: whole bamboo is taken, crushed and cut, and bamboo strips with a length of 6-8 cm, a width of 0.5-0.7 cm, and a thickness of 0.3-0.5 cm are taken. The strips are ultrasonically treated for 25-35 min, then soaked in NaOH solution for 30-40 min, filtered, washed with deionized water until neutral, and dried to a moisture content of 15-20% to obtain pretreated bamboo strips. The bamboo fiber extracted by this invention has a tensile strength of 1.21-1.28 GPa, a breaking elongation of 4.09-4.17%, an elastic modulus of 37.15-37.26 GPa, and an average enzyme activity retention rate of 66.3-68.4% after 10 reuses.

Provided are a porous membrane and a method for producing the porous membrane, whereby the pore diameter can be reduced and the flow rate can be increased. A porous film containing (A) at least one resin component selected from the group consisting of a polyimide, a polyamideimide, and a polyethersulfone, and a solvent (S), in which the solvent (S) contains a nitrogen-containing polar solvent (S1) having a boiling point at atmospheric pressure of 200 DEG C or higher, and the content of the nitrogen-containing polar solvent (S1) in the porous film is 10 ppm to 2000 ppm (inclusive).

The invention relates to the technical field of fabric treatment equipment, and particularly provides a coating device for processing a high-air-permeability and moisture-permeability microporous coating fabric. The coating device for processing the highly breathable and moisture permeable microporous coated fabric comprises a coating frame body assembly, a winder, a re-drying instrument, a pressurizing assembly, a hot rolling assembly and a guide soaking assembly. Multi-stage drying and temperature control adjustment are provided, milder and more uniform curing, shaping and drying processes are further realized, and a microporous structure with smaller pore diameter and thicker pore wall can be formed, so that the body strength of a coating film is directly improved, and meanwhile, an extremely thin compact'skin layer 'can be formed on the surface of the microporous coating fabric; the surface of the coating is smoother and more uniform, internal micropores are protected, the wear resistance and flatness of the fabric are remarkably improved, in addition, the compact degree of the skin layer can be accurately controlled, the skin layer is compact enough to improve the wear resistance, a proper porous structure is kept, and the air permeability and moisture permeability are guaranteed.

This invention discloses a core-shell hydrogenation catalyst and its preparation method. The catalyst comprises a core layer and a shell layer, wherein the core layer is alumina loaded with an active metal component, and the shell layer is alumina loaded with molybdenum carbide. The active metal is at least one of Group VIII metals and at least one of Group VIB metals. The preparation method of the catalyst is as follows: first, boehmite powder is mixed with an organic acid solution and dried before introducing the active metal component. Then, after molding, a spherical core layer material is obtained. Then, under rolling spherical conditions, the obtained spherical core layer material, boehmite powder, molybdenum carbide powder, and an organic alcohol polymer solution are mixed evenly to obtain a catalyst precursor. Finally, the catalyst precursor is dried and calcined to obtain the core-shell hydrogenation catalyst. The hydrogenation catalyst provided by this invention is particularly suitable for the hydrogenation conversion of heavy oil, coal tar, and other oils containing macromolecular aromatics and polycyclic aromatic hydrocarbons.

The present application belongs to the technical field of water purification and sludge treatment equipment, and specifically discloses a sludge concentration tank for treating tap water and sludge water, which comprises a tank body, a central reaction cylinder arranged in the middle of the tank body, a water inlet pipe connected to the central reaction cylinder, a sludge accumulation area at the lower part of the tank body, a clarification area at the upper part of the tank body, and a balance tank connected to the sludge accumulation area; a plurality of annular water collecting and discharging pipes are fixedly arranged on the inner wall of the clarification area, the annular water collecting and discharging pipes are in communication with a total water outlet pipe, and the total water outlet pipe is connected to a water recycling tank; a plurality of water collecting holes are arranged at the bottom of each annular water collecting and discharging pipe, the number of water collecting holes increases from the bottom to the top, and a plurality of air vents are arranged at the top of each annular water collecting and discharging pipe; in addition to the uppermost annular water collecting and discharging pipe, an independent electric butterfly valve is arranged on each of the other annular water collecting and discharging pipes. The present application realizes the multiple functions of flow regulation, sedimentation, sludge concentration and sludge-water separation in one, reduces the occupied area, and is resistant to the impact of uneven sludge water discharge.

The utility model discloses a textile processing equipment nozzle device relates to the field of textile equipment, including base, the inside fixedly connected with bottom plate of base, the inside of bottom plate is established with the feedway, the upper surface fixedly connected with the connecting plate of bottom plate, the upper end fixedly connected with the conical ring of connecting plate, the inside through -going of conical ring is established with the feed hole, the top fixedly connected with the spray head of conical ring, the feed hole with feedway intercommunication, the inside through -going connection with the feed pipe of base, the right -hand member of feed pipe with feedway intercommunication. In the utility model, the inside of feedway is sent into the feed hole with dye, and the aperture of reduction accelerates the flow rate of dye, and simultaneously through the diameter of reducing spray head and conical head accelerates the gas flow, and dye and gas collide together, thereby the spray of dye atomization is to the work piece, and the even spray of convenient is prevented to cause the damage to work piece.

The application discloses a carbon aerogel adsorption electrode and an electric adsorption system based on the carbon aerogel adsorption electrode, and a method for preparing the carbon aerogel adsorption electrode. The method adopts normal pressure drying technology, greatly reduces energy consumption in the electrode preparation process while ensuring that the electrode has large porosity. Compared with the existing electric adsorption process for regenerating circulating cooling water, the electrode regeneration process needs to be suspended for adsorption, which influences the adsorption and regeneration efficiency. The application adopts ex-situ regeneration electric adsorption, improves ion adsorption capacity, and realizes electrode regeneration in ex-situ, thereby ensuring continuous operation of the electric adsorption process, improving the adsorption and regeneration efficiency, and further improving the desalination efficiency. The electric adsorption system can be used for removing anions and cations of the circulating cooling water, and the obtained regenerated water can be used as make-up water for a cooling tower.

The invention provides a cotton fiber / nitrocellulose composite membrane and a preparation method and application thereof.The preparation method comprises the following steps that S1, a cotton pulp board is beaten into cotton fiber-containing cotton pulp, the cotton fiber-containing cotton pulp is added into an acetic acid buffer solution of sodium periodate, a first reaction is conducted, an obtained product is washed and then added into a NaBH4 solution, and a second reaction is conducted; carrying out a second reaction, and washing the obtained product to obtain cotton fibers oxidized by sodium periodate; and S2, mixing the cotton fibers oxidized by sodium periodate with a cellulose nitrate and carboxymethyl cellulose suspension, carrying out suction filtration to form a membrane, so as to obtain an ox-CF / NC / CMC composite membrane, immersing the ox-CF / NC / CMC composite membrane into a gelatinized cationic starch suspension, taking out the membrane, and drying the membrane, so as to obtain the ox-CF / NC / CMC / CS composite membrane. The protein adsorption performance and the color development performance of the composite membrane are enhanced.

This invention discloses a method for preparing a gas separation membrane, specifically a method for densifying and hydrophobically modifying the outer surface of a hollow fiber membrane. The invention primarily involves mixing isotactic polypropylene granules in a mixer and heating them to 150-200°C. The granules are then stretched and extruded into a membrane through a spinneret while in a molten state. The membrane is then cooled for 1-3 minutes in a cooling chamber using volatile alkanes or alcohols as atomizing cooling media. Finally, the hollow fiber membrane fibers are stretched and drawn onto rollers, automatically wound onto the rollers to form the original membrane fibers. These fibers are then subjected to post-treatment processes such as overnight soaking in deionized water and washing to obtain the hollow fiber degassing membrane. The advantages of this invention are that it eliminates the need for introducing other components (the alcohol solvent is fully evaporated without residue), avoids material compatibility and stability issues between different components, and provides a long-lasting and reliable hydrophobic enhancement effect.

The application belongs to the technical field of defoaming agent preparation, and more particularly relates to a defoaming agent and a defoaming method thereof in petrochemical industry. The defoaming agent is a silicone oil defoaming agent, which comprises the following raw materials in parts by weight: 100-120 parts of dimethyl silicone oil, 6-9 parts of silica sol, 3-4 parts of chitosan, and 10-12 parts of emulsifier. The dimethyl silicone oil is first treated by allyl glycidyl ether and then grafted with tyrosine with an isoelectric point of 5.66. The silica sol is first treated by ammonia water and then surface-modified by hexamethyldisilazane. The pH of the defoaming agent is 7.0. The product obtained by the application has the advantages of high defoaming efficiency and short defoaming time.

This invention relates to the field of rare earth electrolysis processes, specifically to an oxide feeding control system and its control method, comprising: an oxide feeding device and a control module. The oxide feeding device includes a first hopper and a second hopper located below the first hopper. A control valve is installed between the first and second hoppers. A feeding mechanism is installed below the second hopper, and a loss-in-weight detection scale is installed at the bottom of the second hopper. The control valve includes a valve body, a drive motor, and a transmission component. A valve core is connected to the end of the transmission component. A spring is installed on the side wall of the valve body located below the valve core. A first vibration sensor is provided at one end of the spring near the side wall. The control module is electrically connected to the drive motor, the loss-in-weight detection scale, the first vibration sensor, and the second vibration sensor. When the second hopper is filled to more than 70% of the target weight, the speed of the motor auger is reduced. This invention reduces the impact on the sensors to an acceptable range, thereby achieving precise control.

This invention relates to a staggered covalent organic framework thin film, its preparation method, and its application, belonging to the field of thin film technology. The invention first dissolves an amine monomer in acetic acid solution to obtain an aqueous solution; then dissolves an aldehyde monomer in mesitylene to obtain an organic solution; finally, the aqueous and organic solutions are added to the aqueous and organic phase chambers of a diffusion cell, respectively, for interfacial polymerization. After the reaction, the membrane material is removed, washed, and dried to obtain the staggered covalent organic framework thin film. This film forms a staggered stacked structure and constructs sub-nanometer transport channels with pore sizes of approximately 0.5 nm to 0.7 nm. Through a synergistic mechanism of Donnan repulsion and hydrogen bonding interactions, it maintains structural stability under extreme environments of high acidity, strong corrosion, and high radiation, achieving highly efficient selective permeation of protons and efficient retention of metal ions in high-level radioactive waste liquids.

This invention provides a cellulose-based sodium-ion battery separator with a double-layer structure and its preparation method, belonging to the field of sodium-ion battery separator technology. The separator of this invention uses micron-sized cellulose fibers, nano-sized cellulose fibers, aramid precipitated fibers, aramid chopped fibers, and nano-Al2O3 as main raw materials. Through a dual-channel synchronous molding process based on wet nonwoven fabric technology, an integrated double-layer composite separator is formed, consisting of a rigid corrosion-resistant protective layer facing the positive electrode and a dense elastic buffer layer facing the negative electrode. The separator of this invention exhibits excellent thermal stability, extremely high electrolyte wettability, good mechanical strength, and a controllable porous structure, effectively improving the safety and electrochemical performance of sodium-ion batteries. The preparation process uses water as a medium, is environmentally friendly, and is easy to scale up for production.

A method for preparing an ammonia nitrogen-rejecting reverse osmosis membrane based on a support layer with controllable amination degree is disclosed. This invention aims to address the problem of poor selective separation performance of ammonia nitrogen in reverse osmosis membranes prepared based on inert support layers. The method comprises: 1. Synthesizing APAEPO polymer with controllable amination degree; 2. Preparing a polymer support layer with controllable amination degree using a solvent-inducible phase inversion method; 3. Preparing an ammonia nitrogen-rejecting reverse osmosis membrane using interfacial polymerization. This invention allows for flexible control of the membrane's ammonia nitrogen rejection rate (92.2%~99.1%) and water flux by adjusting the amination degree of the support layer (0-80%), meeting the needs of different reclaimed water treatment scenarios (such as low-ammonia nitrogen wastewater reuse and high-ammonia nitrogen wastewater deep purification), thus having a wide range of applications. The preparation process of the amination polymer in this invention does not require the introduction of toxic modifiers, the polymerization reaction conditions are mild, secondary pollution is minimal, and it can be directly industrialized.

The application discloses a monolithic structure ceramic filter plate for low-grade iron concentrate dewatering and a preparation method thereof, and belongs to the technical field of ceramic filter plates.The application is characterized in that: a ceramic 3D printing material is prepared, and a double-head double-precision 3D printer is used to layer-by-layer print a monolithic structure ceramic filter plate base body; the base body mud blank is dried and fired, coated and fired again, and then a water outlet nozzle and a positioning hole are installed to obtain the monolithic structure ceramic filter plate for low-grade iron concentrate dewatering.The application reduces the surface roughness of the monolithic structure ceramic filter plate, improves the corrosion resistance and service life; the 3D printing technology is used to make the inner cavity of the monolithic structure ceramic filter plate have better symmetry, reduce the corrosion and damage caused by the too thin side of the filter plate, and the unique inner cavity column design has higher water flux under the premise of ensuring the strength of the base body, and the resistance caused by the reduction of the micro-pore diameter is compensated.

The invention relates to the technical field of fuel cells, in particular to a gas diffusion layer for a fuel cell and a preparation method and application of the gas diffusion layer. The gas diffusion layer for the fuel cell comprises a substrate layer, a supporting layer and a microporous layer which are sequentially stacked, the substrate layer and the supporting layer are both composed of fiber filaments, the diameter of the fiber filaments of the supporting layer is smaller than that of the fiber filaments of the substrate layer, and the diameter of the fiber filaments of the supporting layer is nanoscale. According to the gas diffusion layer, the gas diffusion layer is designed to be of a three-layer structure, the supporting layer is introduced between the substrate layer and the micropore layer, meanwhile, the wire diameter of the supporting layer is limited to be smaller than that of the substrate layer, the supporting layer with the pore diameter smaller than that of the substrate layer and the porosity higher than that of the substrate layer is prepared, and meanwhile the thickness of the micropore layer is reduced; the gas diffusion layer has more excellent conductivity, reduces the resistance in the thickness direction, and is more beneficial to water and gas transmission especially under the condition of high current density.

The utility model belongs to the technical field of high-pressure water cleaning equipment, and discloses an ultrahigh-pressure stainless steel pipe sealing and connecting structure which comprises two stainless steel pipes which are in threaded connection with a concave plate connecting piece and a flat plate connecting piece respectively. The end face of the concave plate connecting piece is attached to the end face of the flat plate connecting piece, and a groove is formed in the end face of the concave plate connecting piece and used for installing a high-pressure sealing ring. Shoulders expanding outwards in the radial direction are arranged at the butt joint positions of the concave plate connecting piece and the flat plate connecting piece; the two flange rings sleeve the outer sides of the concave plate connecting piece and the flat plate connecting piece respectively, and the inner sides of the two flange rings abut against the two circular beads respectively; the two flange rings are connected through a bolt assembly. By means of the split type design, the high-pressure water cleaning device has the advantages of being good in sealing performance and pressure resistance, convenient to disassemble and assemble and low in cost, and is suitable for being applied to the field of high-pressure water cleaning.

The utility model relates to the technical field of bathroom accessories, and discloses a multifunctional water-saving top shower head, which comprises a shower head, a mounting shell and a conveying pipe, a monitoring component is mounted at the bottom end of the conveying pipe in a threaded manner, and a water storage tank is fixedly connected to the bottom end of the monitoring component. According to the multifunctional water-saving top-spraying shower head, through the arrangement of the filtering assembly, when the multifunctional water-saving top-spraying shower head is used and a water body is conveyed into the conveying pipe, a fiber filter screen layer can effectively block particulate matter and impurities in the water, and a ceramic filter element has a small hole diameter, so that finer particles can be further filtered; the ion exchange resin in the metal removal area can remove heavy metal ions in water and reduce the hardness of the water, and the activated carbon adsorption layer can adsorb organic matters, chlorine and other smells in the water, so that the effects of improving the water quality and reducing the generation of water alkali are achieved, and the water outlet head of the top-spraying shower head is prevented from being blocked by the water alkali generated by long-time use of the top-spraying shower head. And the water quality can be improved, and the service life of the top shower head can be prolonged.

The application belongs to the technical field of projection lenses, and provides a Sharm lens for projection, a projection device and a projection system. The Sharm lens for projection comprises a rear group and a front group arranged in sequence from an object side to an image side along an optical path direction, and the rear group and the front group are separately and spacedly arranged; the rear group comprises a lens module with a positive optical power-negative optical power-positive optical power structure, and in the lens module with the positive optical power-negative optical power-positive optical power structure, a first positive optical power lens group, a first negative optical power lens group and a second positive optical power lens group are arranged in sequence from the object side to the image side along the optical path direction; and the front group comprises a negative optical power lens and a positive optical power lens arranged in sequence from the object side to the image side along the optical path direction. The Sharm lens for projection has the advantages of small F#, good imaging quality and the like through cooperation of the multiple lenses in the rear group and the front group.

The injection mold comprises a mold core assembly and an elastic connecting piece, the mold core assembly comprises a first mold core and a second mold core which are oppositely arranged, the first mold core and the second mold core jointly define and form a containing hole, the containing hole is used for containing a workpiece, and the mold core assembly is provided with a containing groove and an injection molding channel. The injection molding channel communicates with the containing hole, the containing hole is formed in the groove bottom of the containing groove and communicates with the containing groove, and the containing groove is used for containing a workpiece; the elastic connecting piece is connected with the first mold core and the second mold core and used for providing elastic force for the first mold core and the second mold core to be close to each other, so that the first mold core and the second mold core clamp a workpiece in the containing hole, and the workpiece is clamped by the elastic connecting piece under the action of external force. The first die core and the second die core can overcome the elastic force provided by the elastic connecting piece to be away from each other so as to broach the containing hole, and therefore a workpiece can enter the containing hole conveniently. The workpiece feeding device can improve the workpiece feeding efficiency.

This invention provides a composite nanofiltration membrane, its preparation method, and its application, belonging to the field of pollutant removal technology. The invention first coats the surface of a macroporous base membrane with a high molecular weight polyelectrolyte system to cover the macropores, then fills the micropores of the base membrane with a low molecular weight polyelectrolyte. This improves the retention rate of micropollutants in the layer-by-layer self-assembled membrane, reducing pore size while maintaining high permeability. This invention prepares a multilayer composite nanofiltration membrane by coating polyelectrolyte systems of different molecular weights onto a high-porosity base membrane and repeating the coating process. The prepared composite nanofiltration membrane achieves a removal rate of over 90% for micropollutants with a molecular weight of around 200 Da, with a maximum removal rate of 99.8%.

This invention relates to the field of air conditioning technology, and discloses an air intake noise reduction structure and an air conditioning range hood. The air intake noise reduction structure includes: an air intake plate with an air inlet; and a noise reduction channel disposed within the air inlet. The noise reduction channel includes noise reduction holes formed inside the air intake plate and a guide channel connecting the noise reduction holes and the air inlet. The guide channel has a guide surface suitable for gradually guiding the airflow and / or sound waves entering from the air inlet to the noise reduction holes. The air conditioning range hood includes: a main air inlet on a smoke hood; and an auxiliary air inlet on the smoke hood, on which the aforementioned air intake noise reduction structure is installed. This invention, without changing the size of the air inlet area, guides the airflow and sound waves entering from the air inlet to the noise reduction holes of the air intake plate through a guide channel set on the inner circumference of the air inlet. The noise reduction holes utilize multiple reflections of noise at the air inlet to dissipate sound wave energy, thereby achieving noise reduction.

The utility model belongs to the technical field of house building construction equipment, and discloses gravel screening equipment for house building construction, which comprises a support frame, a rectangular plate is movably connected to the top of the support frame, a screening box is fixedly sleeved in the rectangular plate, a first screen mesh plate is fixedly mounted in the screening box, and a second screen mesh plate is fixedly mounted in the first screen mesh plate. A second screen plate is movably connected into the first screen plate in a sleeved mode, and a driving motor is fixedly connected to the front face of the screening box. Through the arrangement of the second screen plate, the driving motor, the rotating rod, the circular shaft and the connecting block, when the driving motor operates, the rotating shaft can drive the rotating rod to rotate, then the rotating rod rotates to drive the circular shaft and the connecting block to move leftwards, and therefore the second screen plate moves leftwards to reduce the hole diameter; the purpose of screening gravel with different particle sizes is achieved, the problem that use limitation exists in screening equipment is solved, and the application range of the screening equipment is widened.

The application relates to a light-weight concrete insulation board and a preparation method thereof, and belongs to the technical field of building insulation boards. The light-weight concrete insulation board is mainly prepared from the following components: cementing material 350-400 parts by weight, light-weight aggregate 71-81.5 parts by weight, additive 10-17.5 parts by weight, foaming agent 1.5-2.0 parts by weight, reinforcing fiber 0.8-1.2 parts by weight, silica sol 2-3 parts by weight and water 160-200 parts by weight. The light-weight concrete insulation board provided by the application can significantly improve the insulation performance on the basis of guaranteeing mechanical properties such as compressive strength, and can guarantee the anti-freezing performance of the insulation board under low-temperature conditions.

The utility model relates to the technical field of cosmetics, in particular to a container with a novel film structure, which comprises an outer base, a storage groove is arranged at the top of the outer base, an inner box is arranged in the storage groove, the inner box comprises an inner bottom box, a placing groove for placing materials is arranged at the top of the inner bottom box, and an elastic film is arranged at an opening of the placing groove. The elastic die is provided with a plurality of holes, the holes are formed through laser drilling, the hole diameter of the holes ranges from 0.05 mm to 0.3 mm, and the hole distance ranges from 0.2 mm to 5 mm. Due to the fact that the hole is punched through the laser, namely the elastic die is punched through the laser punching head, the hole diameter of the punched hole is 0.05 mm-0. 3 mm, and the hole distance is 0.2 mm-5 mm. Compared with an existing punching die, the hole diameter of the punched hole is small, discharged materials are fine, smooth and even, the situation that the punching head is broken is avoided, and batch production can be achieved.