33results about How to "Tight bond" patented technology

The invention relates to the technical field of amorphous zirconia corundum bricks, in particular to an amorphous zirconia corundum refractory brick and a preparation method thereof.The amorphous zirconia corundum refractory brick comprises, by weight, 60-70 parts of alumina powder, 25-35 parts of zircon sand, 5 parts of additives and 11-13 parts of binder.The preparation method comprises the steps of mixing, pouring, drying in the shade and baking. The components of the amorphous zirconia corundum refractory brick are adjusted, silica sol is added as a binder, and one or more of a binder additive, a water reducer additive and a dispersant additive is / are selected as an additive, so that alumina powder and zircon sand are dispersed more uniformly and combined more tightly; and in the preparation process, the green bricks are heated and baked by utilizing a transformed and innovated trolley furnace, the heating is uniform, and the formed amorphous zirconia corundum refractory brick is compact in structure, high-temperature-resistant, corrosion-resistant and permeation-resistant.

The invention provides a wear-resistant super-hydrophobic coating and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a porous structure coating which comprises a dispersion liquid of a micron-scale filler, resin and an auxiliary agent; (2) spraying the porous structure coating prepared in the step (1) on the surface of a base material by using a spraying technology to construct a stone-like paint or honeycomb-like firm porous network structure framework; (3) preparing a hydrophobic modified nanoparticle dispersion liquid; and (4) a hydrophobic modified nanoparticle dispersion liquid is sprayed on the porous network structure framework by using a spraying technology, the nanoparticles are embedded into the porous network structure framework, and the water contact angle of the composite coating is 158 degrees. The composite coating has high mechanical strength and excellent super-hydrophobic performance, and is endowed with wide application prospects.

The invention discloses a composite diaphragm as well as preparation and application thereof in a lithium ion battery, and belongs to the technical field of lithium ion battery materials. The composite diaphragm comprises a base material, at least one ceramic coating and at least one organic polymer coating, wherein the surface of the base material is coated with the at least one ceramic coating and the at least one organic polymer coating. The thickness of the ceramic coating is 1-3 m, and the thickness of the organic polymer coating is 0.3-5 m. And the ceramic coating is prepared by adopting a water-based coating process, so that the heat resistance and electrolyte wettability of the diaphragm can be improved. The organic polymer coating is prepared in an electrostatic spinning mode, and a spherical bead structure is formed by adjusting spinning parameters. Due to the fact that a large number of bead structures are contained, the prepared composite diaphragm shows stable super-hydrophobic performance. And the organic polymer has extremely high heat resistance and cohesiveness to a pole piece, and the diaphragm is endowed with extremely high porosity by the electrostatic spinning preparation process.

The invention discloses core-shell type solid waste-based functional granules as well as a preparation method and application thereof. The core-shell type solid waste-based functional granules comprise a core material and a shell material coating the surface of the core material, wherein the core material comprises 20-90 parts of river sludge, 1-15 parts of hydrogen peroxide, 10-50 parts of rice hull ash, 1-12 parts of sodium hydroxide and 5-40 parts of desulfurized gypsum; the shell material comprises 10-100 parts of steel slag, 5-40 parts of mineral slag, 5-30 parts of desulfurized gypsum and 2-13 parts of polyvinyl alcohol. According to the invention, comprehensive treatment and application of the river sludge and the steel slag are realized.

The application discloses a full-wrapping concrete truss structure and a construction method thereof, and belongs to the technical field of building structures. The full-wrapping concrete truss structure comprises a steel pipe truss assembly arranged between a plurality of steel plates, a wrapping assembly arranged outside the steel pipe truss assembly, and a concrete layer arranged outside the wrapping assembly. The construction method comprises the following steps: S1, preparing a top chord, a bottom chord, a vertical rod and a horizontal rod, wrapping the rods with a reinforcing mesh and welding to obtain a steel pipe truss shell; S2, arranging a diagonal web member assembly inside the shell and arranging a connecting mesh outside the shell to form a steel pipe truss monomer; S3, bolt connecting a plurality of monomers and bolt connecting the steel plates and the monomers at edges to form a steel pipe truss structure; and S4, vibrating the steel pipe truss structure after concrete partition pouring to obtain the full-wrapping concrete truss structure. The application can realize full wrapping of the steel pipe, ensure that the concrete layer is tightly bonded with the steel pipe, and improve the stability and safety of the structure.

The invention relates to the field of refractory materials, in particular to a high-strength refractory material and a preparation method thereof, which are used for solving the problem that the existing traditional refractory material is low in strength and difficult to meet the high-standard requirement of modern industry on equipment. The high-strength refractory material comprises the following components: silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide, titanium diboride and a phosphorus-containing phenyl multi-epoxy-group binding agent, according to the preparation method, silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide and titanium diboride are taken as main raw materials, the main raw materials are endowed with excellent mechanical properties, and after a phosphorus-containing phenyl polyepoxy binding agent is added, the mechanical properties of the main raw materials can be further remarkably improved, so that the prepared refractory material has the characteristics of high strength, high temperature resistance and the like. The composite material shows high durability and reliability in a high-temperature environment, and is suitable for thermal protection in the high-temperature environment and internal construction of high-temperature equipment.

The invention provides a low-loss microstrip transmission line based on substrate stacking and bonding. The low-loss microstrip transmission line comprises an upper carrier plate layer, a hollow transmission layer, a lower carrier plate layer, a first bonding layer and a second bonding layer, a first metal layer is arranged on the lower surface of the upper carrier plate layer, and a second metal layer is arranged on the upper surface of the lower carrier plate layer; the first metal layer, the second metal layer and the hollow-out area of the hollow-out transmission layer jointly form a transmission area; electromagnetic waves are propagated in the transmission area in a quasi-TEM mode form; the upper carrier plate layer, the first bonding layer, the hollow transmission layer, the second bonding layer, the second metal layer and the lower carrier plate layer are stacked and bonded in parallel in sequence; and therefore, the interlayer is tightly bonded, the structure is flat and stable, and displacement and height change between the layers are avoided. The invention has the advantages of low cost and low loss, and is suitable for the field of microwave communication transmission. In addition, the antenna also has the characteristics of easy processing, high integration and wide frequency band, so that the antenna is widely applied to scenes using a multilayer board integration technology.

The invention relates to a wafer bonding device, which comprises a cleaning shed, a bearing assembly, a film cutting assembly, a film pasting assembly, a bonding lower cavity assembly and a bonding upper cavity assembly, and is characterized in that the bearing assembly is used for bearing quartz glass to move below the film cutting assembly and the film pasting assembly, and the film cutting assembly is used for cutting a glue film on the quartz glass; the film pasting assembly is used for tightly pasting an adhesive film and quartz glass, the bonding lower cavity assembly is used for placing the quartz glass with the film pasted and driving the quartz glass with the film pasted to ascend during bonding, and the bonding upper cavity assembly is used for adsorbing a wafer and providing a vacuum environment and downward pressure so as to enable bonding to be tighter. According to the invention, the bonding lower cavity assembly is raised, the bonding upper cavity assembly is pressed down, and the formed closed body is vacuumized, so that the bonding effect is effectively improved; according to the invention, the quartz glass film pasting device and the wafer bonding device are integrated, so that the production efficiency is effectively improved; the whole device is protected by the clean shed, and the device is effectively prevented from being polluted.

This invention discloses a high-crack-resistant cement-fly ash stabilized base course material, belonging to the field of road engineering technology. The material comprises the following components by mass percentage: 2.0-3.0% cement, 16-20% fly ash, and the balance being stabilized aggregate. The cement is an external admixture, the fly ash is an internal admixture, and the gradation of the stabilized aggregate conforms to the specifications of CF-A-2L or CF-A-2S in JTG / T F20-2015. This invention, by adopting a "low cement, high fly ash" mix design, controls the 7-day unconfined compressive strength within a reasonable range of 3.5-4.5 MPa, effectively avoiding the problem of regular transverse cracks in the base course caused by excessively high early strength. Simultaneously, the high fly ash content ensures the continuous growth of the material's later strength, with its 21-day unconfined compressive strength remaining stable above 6 MPa. Its overall performance is superior to the mix ratios recommended by current standards. This invention is particularly suitable for highway base course construction in arid regions with large temperature differences, such as Xinjiang.

The invention discloses special steel sand for a 3D printing metal casting mold and a preparation method of the special steel sand, belongs to the technical field of steel sand processing, and aims to solve the technical problems of poor dimensional stability of a sand mold at a high temperature and poor collapsibility of the sand mold added with the steel sand due to thermal expansion coefficient difference between the steel sand and standard sand in the prior art. The method comprises the following steps that steel grit, absolute ethyl alcohol and KH-560 are added into a reaction kettle to be stirred, the temperature of the reaction kettle is increased to 50-55 DEG C, and a sodium hydroxide solution is added into the reaction kettle. After the element composition and particle size distribution of the steel grit are optimized and the steel grit is subjected to surface modification, the modified steel grit is enhanced by using a mixed modification solution, and the strength of the steel grit is improved; and special steel sand is prepared and mixed with standard sand for 3D sand mold printing, so that the normal-temperature compressive strength and dimensional stability of the sand mold are effectively enhanced, and the collapsibility of the sand mold is also improved.

The present invention relates to the technical field of electronic ceramic substrate materials, and more specifically, to a tape casting slurry, a green porcelain tape and a preparation method thereof. The tape casting slurry of the present invention is made of component A, component B and component C, wherein component A comprises: calcium borosilicate glass powder; component B comprises: solvent, binder, plasticizer and dispersant; component C comprises: one or more of acrylic adhesive, alkane mixture, pre-dispersant and auxiliary agent; the mass ratio of component A, component B and component C is 100:(50-150):(0.02-20). The tape casting slurry provided by the present invention has moderate viscosity and good fluidity, and can obtain a green porcelain tape with uniform film thickness and smooth surface.

The invention discloses a preparation method of fluoride-free waterproof down, waterproof down and application. Relates to the technical field of down. The preparation method of the fluoride-free waterproof down comprises the following steps: S1, pretreatment; s2, primary dipping; s3, primary curing treatment; s4, dipping for the second time; s5, carrying out secondary curing treatment; wherein the first waterproof agent comprises 10 wt% of paraffin; 80 wt% of an acrylic acid waterproof agent; 5 wt% of water; 5 wt% of a surfactant; the second waterproof agent comprises 20 wt% of paraffin; 70 wt% of an acrylic acid waterproof agent; 5 wt% of water; and 5 wt% of a surfactant. The down feather is subjected to dipping treatment through the first waterproof agent and the second waterproof agent in sequence, the first waterproof agent with less paraffin can be bonded with the down feather more tightly, and the second waterproof agent with more paraffin can make the down feather have a better waterproof effect; through low-temperature drying of primary curing treatment, the bonding effect of the first waterproof agent and the down feather is enhanced; and through high-temperature drying of secondary curing treatment, the bonding firmness of the down feather and the first waterproof agent and the bonding firmness of the first waterproof agent and the second waterproof agent are enhanced.

The present invention belongs to the technical field of alkali metal ion batteries, and discloses a negative electrode of a lithium / sodium ion battery with a dual gradient structure and a preparation method thereof. The dual gradient negative electrode is a double gradient sandwich structure constructed by a current collector modified with a strong lithium / sodium-philic conductive layer at the bottom of the negative electrode, an active layer in the middle of the negative electrode, and a lithium / sodium-phobic insulating passivation layer at the top of the negative electrode, wherein the bottom of the negative electrode is lithium / sodium-philic and conductive, the middle negative electrode active layer has moderate lithium / sodium-philicity and conductivity, and the top is lithium / sodium-phobic and insulating. By introducing a conductive and lithium / sodium-philic component at the bottom of the negative electrode with a low lithium / sodium nucleation barrier, after the negative electrode active layer accommodates lithium / sodium, it can induce excess lithium / sodium ions to nucleate and grow from the bottom of the negative electrode, avoid lithium / sodium precipitation on the surface of the negative electrode, effectively utilize the lower layer space of the negative electrode, realize dual-phase lithium / sodium storage, and greatly improve the specific capacity and cycle life of the negative electrode. At the same time, the insulating lithium-repellent passivation layer on the negative electrode surface is not only thin, but also well preserves the original pore structure of the negative electrode active layer, and has little effect on the wettability of the electrolyte and the diffusion process of lithium / sodium ions. Moreover, the insulating lithium-repellent property effectively hinders the reduction growth of lithium / sodium on the electrode surface. The synergistic effect of the dual-gradient structure not only greatly improves the specific capacity of the negative electrode through the dual-phase lithium / sodium storage characteristics, but also prevents the occurrence of lithium / sodium precipitation on the surface, significantly improving the cycle performance of the battery.

The invention relates to a road paving structure and a construction method thereof, and the road paving structure comprises a concrete base layer, a waterproof layer, a hard asphalt lower surface layer, a first bonding layer and an epoxy modified rubber asphalt surface layer which are sequentially arranged from bottom to top; and the void ratio of the epoxy modified rubber asphalt surface layer is 8-18%. Compared with the traditional SMA-13 pavement, the pavement has the beneficial effects that the noise inside and outside the vehicle is obviously reduced at the running speed of 80km / h, the driving experience is optimized, the stability of the pavement reaches the standard in the service period, and the pavement can be popularized and used.

The invention discloses a preparation method and device of an Anshan basalt stratum grouting material, and relates to the technical field of grouting. Primarily stirring the slurry; shearing and dispersing at high speed; performance detection; and a grouting step. According to the invention, the superfine fly ash microbeads, silica fume and nano-silica are compounded, and a high-speed shearing process is adopted, so that the particle size of the slurry is remarkably reduced, the flowability of the slurry is improved, and the slurry can be smoothly injected into micro cracks of anshan basalt; the main component Portland cement clinker has the characteristics of early strength and micro-expansion; the filling effect of the secondary components silica fume and nano-silica further compacts the structure of the stone body, so that the stone body has high later strength and tight cohesiveness with bedrock; under the synergistic effect of a small amount of hydroxypropyl methyl cellulose and nano silicon dioxide, segregation and bleeding of the slurry are effectively prevented, and it is ensured that the slurry is fully filled in cracks.

The invention discloses preparation and application of a multilayer ceramic laminated film. The preparation method of the film comprises the steps that resin, a plasticizer, a dispersing agent and a solvent are mixed to obtain glue, the resin comprises one or more of polyvinyl butyral, an acrylic polymer and ethyl cellulose, the plasticizer is phthalate, and the dispersing agent is a polycarboxylic acid amine polymer; and carrying out tape casting on the glue to form a film. The application of the film in preparation of the high-temperature co-fired ceramic comprises the following steps: alternately laminating the green ceramic chip and the film; hot-pressing, fixing and pressing to ensure that the adjacent green ceramic chips are tightly bonded to obtain a laminated blank; and degumming and sintering the laminated blank to obtain the high-temperature co-fired ceramic. According to the lamination method of the multi-layer ceramic, the problems of organic solvent erosion, green ceramic chip softening and the like do not exist, the time required for lamination and pressing is short, and the production efficiency is high. The laminated blanks are tightly bonded and have no layering and cracking problems; and after glue discharging and sintering, ash residues are few, the interlayer structure is compact, and no gap or hole exists inside.

The invention provides a preparation method of a high-voltage composite positive electrode, which comprises the following steps: mixing a low-melting-point solid electrolyte or a precursor of the low-melting-point solid electrolyte, a high-voltage polycrystalline positive electrode material and a conductive agent to obtain a composite positive electrode precursor; and carrying out low-temperature heat treatment on the composite positive electrode precursor to melt and permeate the solid electrolyte into the high-voltage polycrystalline positive electrode material, and uniformly adhering the conductive agent to the surface of the positive electrode along with the solidification of the molten electrolyte during cooling to obtain the high-voltage composite positive electrode. The preparation method synchronously solves the problems that internal pores of the high-voltage polycrystalline positive electrode material hinder ion and electron transmission and the polycrystalline morphology of the positive electrode material is easy to break. The invention also provides the high-voltage composite positive electrode prepared on the basis of the preparation method and a solid-state battery comprising the high-voltage composite positive electrode. The solid-state battery based on the high-voltage composite positive electrode is high in utilization rate of active substances and excellent in rate capability and cycle performance.

The utility model discloses an assembly type building combination butt joint device which comprises at least two L-shaped perforated plates, each perforated plate comprises a transverse plate and a vertical plate, a rubber mat is arranged on the lower surface of each transverse plate, a plurality of inner threaded pipes are arranged on the lower surface of each rubber mat, screw holes are formed in the transverse plates and the rubber mats, and the upper ends of the inner threaded pipes sequentially penetrate through the screw holes in the transverse plates and the rubber mats and are provided with compression bolts. Two groups of long plates are arranged between the two corresponding perforated plates, the adjacent long plates on the two correspondingly arranged perforated plates are mutually staggered, a first thermoplastic rubber plate is arranged below the two groups of long plates, and a second thermoplastic rubber plate is arranged above the two groups of long plates. When the floor slabs are combined, the first thermoplastic rubber plate is laid in a gap between the two floor slabs, then the rubber mat and the perforated plate are sleeved outside the inner threaded pipe, the compression bolt is screwed into the inner threaded pipe to press the perforated plate, and finally, the second thermoplastic rubber plate is laid on the long plates and heated, so that the thermoplastic rubber plates are melted, bonded and coated on the two groups of long plates, and the two groups of long plates are combined. The floor, the perforated plate and the long plate are tightly bonded, and the sealing performance of the butt joint of the floor is improved.

This invention discloses a ditch reinforcement device for land reclamation, specifically relating to the field of land reclamation technology. The upper rear side of the excavator bucket is symmetrically and movably connected to traction steel wires. Two traction steel wires are movably connected to a trolley. A flat cutting mechanism is symmetrically arranged at the lower part of the transmission mechanism. A reinforcement mechanism is symmetrically and rotatably connected to the rear side of the trolley. A collection box is arranged at the lower center of the trolley. This ditch reinforcement device for land reclamation uses a flattening roller to flatten the loose soil on the sidewalls, helping to eliminate voids and unevenness in the soil. Simultaneously, the movement of the trolley drives a cutter, in conjunction with a telescopic roller, to groove and flatten the inner surface of the groove on the sidewalls, helping to increase the adhesion between the concrete and the sidewalls. Furthermore, the laying of the reinforcement mesh and the cooperation of the reinforcement rods insert the mesh into the sidewalls, making the mesh more tightly bonded to the slope surface. This increases the friction of the slope surface while preventing soil slippage under gravity.

The invention relates to the technical field of grouting materials, in particular to a high-performance prestressed duct grouting material which comprises water, cement, silica fume, mineral powder, limestone powder, a water reducing agent, microbeads, a plastic expanding agent, a suspension stabilizer and a defoaming agent.The cement, the silica fume, the mineral powder, the limestone powder and the microbeads are used for constructing a multi-element mineral admixture system; the powder materials with different particle sizes are mutually filled, so that close accumulation among particles is realized, and the void ratio among the powder is effectively reduced, thereby reducing the water consumption required for filling gaps and improving the compactness and the homogeneity of the slurry; meanwhile, the water reducing agent efficiently disperses cement particles through the steric hindrance effect, the microbeads reduce the friction resistance in the slurry through the spherical ball effect of the microbeads, the plastic viscosity and yield stress of the slurry are remarkably reduced through the combined action of the water reducing agent and the microbeads, and the slurry is endowed with excellent initial fluidity and long-time fluidity maintaining capacity; and it is ensured that the slurry can be rapidly and smoothly filled in the prestressed duct.

The utility model provides a height-adjustable truncated cone test mold. The height-adjustable truncated cone test mold comprises a base and a splicing mold, the base is of a circular plate structure, and a circle of inserting groove is formed in the upper end face of the base. A plurality of groups of splicing molds are arranged, and each group of splicing molds comprises a mold I and a mold II; the bottom of the first mold is provided with a circle of inserting-connecting protruding blocks matched with the inserting-connecting grooves, and the first mold is detachably arranged on the base. The mold II is detachably spliced on the mold I; the mold I and the mold II are spliced to form a molding cavity with a circular truncated cone structure inside; the total height of the first mold and the second mold in each set of splicing mold after splicing is not larger than 30 mm, and the height of the second mold is 2-10 mm. The height-adjustable truncated cone test mold disclosed by the utility model is simple to operate, high in test piece forming precision and small in error, the thicknesses of all parts of a coating are uniform and consistent, the coating is tightly bonded with basic mortar, and the periphery is smoothly connected; meanwhile, basic mortar test pieces with different heights can be formed, and the requirement for preparing coating test pieces with different thicknesses is met.

The application provides a ceramic capacitor encapsulation process, which comprises the following steps: S1, encapsulating a 0.8mm-1.0mm insulating paint layer on the surface of a ceramic capacitor; S2, coating a 1.6mm-1.8mm hyperbranched epoxy resin layer on the surface of the capacitor obtained in step S1; and S3, coating a 0.4mm-0.6mm bisphenol A type epoxy resin layer on the surface of the capacitor obtained in step S2. The application adopts three different encapsulation materials for three times of encapsulation, simultaneously optimizes the thickness of each encapsulation layer, fully utilizes the characteristics of the three encapsulation materials, can significantly reduce the residual stress of the encapsulation layer, improves the interfacial bonding force between the encapsulation layer and the ceramic capacitor, reduces the cracking risk, improves the stability and reliability of the ceramic capacitor, and further improves the voltage resistance strength of the ceramic capacitor.

The invention discloses a fabricated light road subgrade structure and a construction method thereof. The fabricated light road subgrade structure comprises a foundation, and a leveling layer is laid on the foundation; the leveling layer is connected with an assembly base block type roadbed in a grouting layer bonding mode, left and right base blocks and upper and lower adjacent base blocks of the assembly base block type roadbed are connected through staggered-joint concave-convex mortise and tenon joints, and a steel-plastic geogrid or a steel wire mesh is laid between the upper base block and the lower base block of the assembly base block type roadbed. Cement paste or self-leveling grouting materials are poured into gaps between the upper base blocks and the lower base blocks of the assembly base block type road subgrade and gaps between the base blocks on the same layer, and an impermeable layer is laid on the top of the assembly base block type road subgrade. The roadbed structure arranged in the technology is a vertical roadbed structure, the problem that the occupied area is large due to traditional soil filling roadbed sloping can be greatly reduced, the foundation block assembly level is high, the material is excellent in light weight, high in strength and good in integrity, and the vertical roadbed structure has the advantages of being small in occupied area and high in construction speed when applied to the field of road reconstruction and extension.

The invention belongs to the technical field of pipeline materials, and particularly relates to a composite pipeline material and a preparation method and application thereof. The composite pipeline material comprises an inner surface layer, an inner fiber cloth reinforcement layer, an inner fiber winding layer, a fiber reinforcement structure layer, an outer fiber cloth reinforcement layer, an outer fiber winding layer and an outer protection layer which are sequentially stacked from inside to outside. The inner surface layer is made of epoxy resin; fibers in the inner fiber cloth reinforcing layer, the inner fiber winding layer, the fiber reinforcing structure layer, the outer fiber cloth reinforcing layer and the outer fiber winding layer are basalt fibers; and the outer protection layer is made of epoxy resin. According to the invention, the epoxy resin and the basalt fiber have good electrical insulation performance and shielding performance, so that the pipeline material has a good stray current resisting effect.

The invention discloses a geocell strip and a preparation method and application thereof.The geocell strip is formed by compounding a geogrid and geotextile, and the geogrid is prepared through the following steps that a warp knitting machine is used for weaving composite fiber bundles into a geogrid body, the geogrid body is coated with a modified asphalt coating, drying is conducted, and the geocell strip is obtained. The geogrid is obtained; the composite fiber bundles are formed by secondarily twisting polyester filament yarns, carbon fibers and polyphenylene sulfide fibers; the modified asphalt coating is prepared from asphalt, SBS, natural rubber, polyphenylene sulfide, basalt fibers, antimony trioxide, polyvinylpyrrolidone and sodium dodecyl benzene sulfonate. The polyester filaments, the carbon fibers and the polyphenylene sulfide fibers are compounded and woven into the geogrid body, the tensile strength, the wear resistance and the durability of the geogrid are enhanced, the asphalt coating is further improved, the temperature sensitivity of asphalt is improved, and the crack resistance, the chemical stability, the oil resistance, the mechanical strength and the wear resistance are improved.

The utility model discloses a non-dismantling heat preservation formwork suitable for a light steel structure, which comprises an outer non-dismantling formwork and an inner non-dismantling formwork, the front end of the outer non-dismantling formwork is provided with a first hard layer, the rear end of the inner non-dismantling formwork is provided with a second hard layer, and the corresponding ends of the outer non-dismantling formwork and the inner non-dismantling formwork are jointly provided with a filling device. According to the non-dismantling heat preservation formwork suitable for the light steel structure, the outer non-dismantling formwork body and the inner non-dismantling formwork body are rigid foam heat preservation plates which are formed by continuously extruding, foaming and forming polystyrene resin serving as raw materials through a special process, and the interior of each rigid foam heat preservation plate is of an independent closed bubble structure; the environment-friendly thermal insulation material has the advantages of being low in thermal conductivity, high in compression resistance, moisture-proof, airtight, non-absorbent, light in weight, corrosion-resistant, long in service life and the like, and the outer non-dismantling formwork and the inner non-dismantling formwork are arranged on the two sides of the light steel keel framework, so that internal and external thermal insulation of a formed wall is achieved.

The present invention discloses a reinforced ALC strip board and a preparation method thereof, an outer wall structure and a short wall structure, and relates to the field of construction, with the purpose of improving the corrosion resistance of the ALC strip board, thereby improving its durability and applicable scenarios. The technical solution adopted by the present invention is: a reinforced ALC strip board, including a plate body and structural ribs in the plate body, the structural ribs including a metal tube, the tube wall of the metal tube is provided with a through hole, and the interior of the metal tube is a tube core formed by pouring a cementitious material; the part of the cementitious material passing through the through hole forms a protective layer on the outer tube wall of the metal tube, or the part of the cementitious material passing through the through hole is combined with autoclaved aerated concrete to form a protective layer. Compared with the existing ALC strip board preparation method, the reinforced ALC strip board preparation method adds a step of pouring cementitious material into the metal tube. The reinforced ALC strip board has a wider range of applications, can be used as a template for the outer wall structure, and realize the thermal insulation and structural integration of the outer wall, and can also be connected to the main wall as a door stack or window stack.

The present invention provides an antiviral polypropylene nonwoven fabric and a preparation method thereof. The method comprises placing a polypropylene nonwoven fabric under a preset temperature for heat treatment, so that the polypropylene nonwoven fabric is softened and a micro-melting phenomenon occurs; placing the heat-treated polypropylene nonwoven fabric in an antiviral treatment solution, and using the temperature of the polypropylene nonwoven fabric to realize in-situ synthesis of nanoparticles; after the temperature of the polypropylene nonwoven fabric drops to room temperature, hot pressing is performed to obtain the antiviral polypropylene nonwoven fabric. Through the above method, the present invention can utilize the physical properties of the polypropylene nonwoven fabric to cause a micro-melting phenomenon on its surface after heat treatment, so as to load antiviral nanoparticles, thereby making the antiviral nanoparticles uniformly loaded and tightly bonded to the polypropylene fibers without destroying the performance of the polypropylene nonwoven fabric itself, giving the polypropylene nonwoven fabric excellent antiviral performance and biocompatibility, so as to meet the needs of actual production and application.

The invention discloses ditch reinforcing equipment for land reclamation, and particularly relates to the technical field of land reclamation, traction steel wires are symmetrically and movably connected to the rear side of the upper end of an excavator bucket, the two traction steel wires are jointly and movably connected with a cart, and flat cutting mechanisms are symmetrically arranged on the lower portion of a transmission mechanism. Reinforcing mechanisms are symmetrically and rotationally connected to the rear side of the cart, and a collecting box is arranged in the middle of the lower end of the cart. According to the ditch reinforcing equipment for land reclamation, topsoil on the side wall is flattened through the flattening roller, gaps and unevenness in soil can be eliminated, meanwhile, the cart moves to drive the cutter to be matched with the telescopic roller to groove the side wall and flatten the inner surface of a groove, the binding force between concrete and the side wall is increased, and the soil reclamation effect is improved. And meanwhile, the reinforcing net is poked into the side wall through laying of the reinforcing net and cooperation of the reinforcing rods, so that the reinforcing net is more tightly combined with the surface of the slope, the friction force of the surface of the slope is increased, and meanwhile soil is prevented from sliding under the action of gravity.

This application discloses a fabric for bags and a method for preparing the same, belonging to the technical field of bag fabrics. The bag fabric includes a base layer, an adhesive, and an abrasion-resistant layer. By weight, the abrasion-resistant layer comprises the following raw materials: 60-70 parts PE resin, 15-20 parts modified corn fiber, 4-8 parts coumarone resin, 10-18 parts modified diatomaceous earth, 2-4 parts dioctyl sebacate, 2-6 parts antioxidant, 0.5-1 part calcium stearate, and 1-1.5 parts rosin. The abrasion-resistant layer prepared by this application has good mechanical strength and abrasion resistance. When applied to the surface of the bag fabric, it is not easily worn or torn, thus extending the service life of the bag fabric.