296 results about "Bi layered" patented technology

The invention relates to a multilayer double-gradient nanopore resin-based composite material with strong interlayer bonding and a preparation method thereof, and the preparation method comprises the following steps: injecting first high-porosity nanopore resin into a first low-volume-density fiber preform to obtain a first low-density layer; surface tension weakening treatment is conducted on the first low-density layer, then a second low-volume-density fiber prefabricated body is laid on the first low-density layer, second high-porosity nanopore resin is injected, and a double-layer double-gradient nanopore resin-based composite material with strong interlayer combination is obtained; and surface tension weakening, glue injection, curing and drying treatment are cyclically carried out, the nanopore resin with the residual porosity decreasing progressively is injected into the residual fiber prefabricated body with the residual volume density increasing progressively, and finally the multilayer double-gradient nanopore resin-based composite material with strong interlayer combination is prepared. Compared with the prior art, the overall density of the material is reduced, and meanwhile the ablation resistance and the heat insulation performance of the material are improved.

The invention relates to the technical field of busbars, and discloses a multi-layer composite fire-resistant shielding busbar and a preparation method thereof, and the multi-layer composite fire-resistant shielding busbar comprises a conductor layer, a fire-resistant layer, a shielding layer and a sheath layer which are sequentially coated from inside to outside; wherein the conductor layer is made of copper or aluminum; the fireproof layer wraps the conductor layer and is formed by wrapping a double-layer PI three-in-one synthetic mica tape. According to the multi-layer composite fire-resistant shielding busbar and the preparation method thereof, the double-layer PI three-in-one synthetic mica tape is used for wrapping, a stable fire-resistant insulation structure is formed outside the conductor layer in a reverse wrapping mode that the first layer is clockwise and the second layer is anticlockwise, and the mica tape is formed by combining phlogopite paper and an organic silicon resin adhesive capable of resisting the temperature of 300 DEG C; the structural integrity can be maintained under the fire high-temperature condition, and electrical short circuit caused by thermal failure is effectively prevented; and meanwhile, the mica tape adhesive layer permeates into the micro-groove structure arranged on the surface of the conductor in the thermocuring process, so that the mechanical occlusion strength is further enhanced.

The utility model discloses a reinforced double-layer buffering angle bead, and relates to the technical field of packaging products. Comprising a corner protector body, the corner protector body comprises an inner side wall, an outer side wall and a cavity formed between the inner side wall and the outer side wall, the inner side wall and the outer side wall are each provided with a plurality of criss-cross grooves, the grooves are segmented and obliquely deepened towards the cavity in an arch arc shape, and the intersection point of every two adjacent grooves is deepest sunken. And the intersection points of the grooves in the inner side wall and the outer side wall correspond to each other and are mutually connected to form supporting points. The plurality of arch-shaped grooves are connected together in the cavity to form a framework-like structure, a gap space can be formed to meet the requirement that gas can smoothly flow in the material pipe in the blow molding process, and the wall surfaces of the inner side wall and the outer side wall can be supported by a plurality of supporting points, so that the wall surfaces can be prevented from collapsing, and the service life of the material pipe is prolonged. The whole large-area wall surface is divided into a plurality of buffer units by the grooves, so that the strength of the wall surface is greatly improved.

This invention discloses a two-color injection molding process for Tritan material, belonging to the field of injection molding technology, which solves the problem of easy delamination and fusion lines in two-layer injection molding of the same Tritan material. The injection mold used in this process includes a male mold, a first injection mold, and a second injection mold. The workpiece includes a transparent inner layer and a transparent outer layer. The steps include: S1. Injecting molten Tritan raw material into the first injection mold heated to 100-130°C to form a transparent inner layer; S2. Cooling the first injection mold to 35-50°C, after mold opening, the transparent inner layer remains in the male mold and rotates 180 degrees to close with the second injection mold, so that the residual temperature of the transparent inner layer is maintained at 35-50°C; S3. Injecting molten Tritan raw material into the second injection mold heated to 100-130°C to form a transparent outer layer on the outer wall of the transparent inner layer; S4. Cooling and solidification; S5. Demolding. This invention achieves molecular chain diffusion and entanglement at the interface of inner and outer layer materials by precisely controlling the temperature of two injection molding processes, resulting in a product with strong interlayer bonding, high transparency, and rich visual effects in a single molding process.

The utility model discloses a portable assembly type laminated slab two-layer stand column. The portable assembly type laminated slab two-layer stand column comprises a supporting base and a column body. A column body is mounted at the top of the supporting base, a top plate is mounted at the top end of the column body, a supporting seat is mounted at the top of the top plate, and H-shaped steel is arranged at the inner bottom of the supporting base; the supporting base, the column body, the top plate and the supporting base are used in cooperation, the supporting base is clamped on the outer side of H-shaped steel, the column body supports the top plate at the top end and the supporting base, a worker can continuously stack the laminated slabs towards the top of the top plate and the top of the supporting base, the number of placing layers is increased, space resources are utilized, and an original single layer is changed into double layers; and the number of stacking layers is also increased, the occupied space is reduced, and then workers can use the stacking device conveniently.

This invention provides a method, system, device, and medium for simulating the spin transport properties of multiferroic materials, belonging to the field of materials simulation and computation technology. The simulation method for multiferroic materials includes: geometrically optimizing the structure of an asymmetric low-dimensional multiferroic material based on first-principles calculations to obtain its ground-state structure; determining the physical property parameters of the asymmetric low-dimensional multiferroic material based on the ground-state structure; constructing a two-layer system architecture with multiple polarization stacking modes for the asymmetric low-dimensional multiferroic material based on the ground-state structure; and calculating the spin transport properties of each two-layer system architecture to obtain the spin transport-related characteristic curves of the asymmetric low-dimensional multiferroic material. This invention significantly improves the simulation accuracy of spin transport properties through the synergy of high-precision ground-state modeling and multi-polarization configuration construction.

The utility model discloses double-layer laminated glass and relates to the technical field of glass. The double-layer laminated glass comprises a laminated glass body, a sleeve seat and a positioning base, the sleeve seat and the positioning base are arranged on the outer side of the laminated glass body, a first rubber ring is movably clamped in the sleeve seat, a second rubber ring is movably clamped in the positioning base, and a locking mechanism is arranged between the sleeve seat and the positioning base. According to the double-layer laminated glass, loading of the laminated glass body is convenient through the sleeve base, the positioning base and the locking mechanism, the laminated glass body is protected through the sleeve base and the positioning base, sealing and buffering of the laminated glass body are achieved through the first rubber ring and the second rubber ring, and when the first rubber ring and the second rubber ring are aged, the first rubber ring and the second rubber ring are sealed and buffered. And the first rubber ring and the second rubber ring can be conveniently and rapidly replaced and maintained, so that the device is easy to maintain, and the use requirements are met.

The utility model relates to the technical field of aluminum foil tape compounding, in particular to double-layer aluminum foil tape compounding equipment which comprises a compounding equipment body, the upper side of the compounding equipment body is fixedly connected with a first U-shaped seat and a second U-shaped seat respectively, the inner side face of the first U-shaped seat is rotationally connected with two movable shaft seats, and winding rollers are clamped in the two movable shaft seats. Aluminum foil on the unwinding roller and the winding roller can be rapidly fed or discharged in a clamping mode, other tools are not needed to fix an aluminum foil belt on the composite equipment, time and labor are saved, and therefore the composite efficiency of the composite equipment is improved; the two aluminum foil belts can be compounded through the two compounding rollers, the two aluminum foil belts can be bonded together so as to complete compounding of the double-layer aluminum foil belts, then the limiting circular ring can play a role in limiting and rolling, and the compounded double-layer aluminum foil belts are not prone to wrinkling.

The utility model relates to a multifunctional splicing type honeycomb carton assembly which comprises two sealing covers which are arranged up and down, four side plates which are connected end to end are arranged between the two sealing covers, baffles are integrally formed on the four side end faces of the two sealing covers in a bending mode respectively, the baffles correspond to the side plates, meanwhile, a matching plate is arranged on the side, away from the baffles, of each side plate, and the matching plates are matched with the baffles. The four matching plates are connected end to end to form a rectangular structure, so that a certain gap is formed between the baffle and the side plate in practice, a user can fill corresponding functional materials such as fireproof materials and moisture-proof materials in the gap according to storage requirements, and diversified storage requirements are met by matching the double-layer honeycomb paperboard structure with the functional materials.

The invention relates to a device and process for pit bottom piping plugging. The device comprises a grouting pipe, a grouting system and a bag section. The bag section is fixed on the grouting pipe through a flange and is 5m away from the bottom end of the grouting pipe; the grouting pipe is connected with a grouting system, the bag section is of a double-layer composite structure, the outer layer is a high-strength polyester woven layer, and the lining is a butyl rubber sealing film; the outer diameter of the bag section in the folded state is 20-30 mm, the bag section is evenly expanded to 300-500 mm after grouting, the channel wall is extruded after expansion, and fast-setting grout is prevented from flowing upwards. The method is suitable for the pit bottom piping of the ultra-deep foundation pit, and is particularly suitable for the pit bottom piping working condition with the leakage amount larger than 10 m < 3 > / h.

The application discloses a soft and dry double-layer composite material, which comprises a bottom layer and a surface layer arranged on the upper portion of the bottom layer, wherein the surface layer has an upper surface and a lower surface, the surface layer is provided with an opening penetrating through the surface layer, the bottom layer is provided with a first protruding portion protruding upward, the first protruding portion penetrates through the opening, the top surface of the first protruding portion is higher than the plane where the upper surface of the surface layer is located, and the fiber fineness of the bottom layer is smaller than that of the surface layer. The application can provide a good soft and comfortable experience for users and improve the dryness of the material.

This invention discloses a lightweight sound-absorbing building material, its preparation method, and its application in ceiling components, relating to the field of lightweight building materials technology. The lightweight sound-absorbing building material of this invention consists of a porous plate and a glaze layer on the surface of the porous plate. The glaze layer is formed by spraying glaze onto the surface of the porous plate; the porous plate is formed by sintering a plate-forming composition; the plate-forming composition includes the following raw materials: waste foamed ceramic powder, diatomaceous earth, hollow glass microspheres, cellulose nanocrystals, bilayer fibers, a foaming agent, and an ethanol solution of polyethyleneimine. The core-shell structure bilayer fibers introduced in this invention, with a mesoporous barium titanate-silica composite phase as the core and an MXene-graphene composite phase as the shell, effectively improve the material's sound absorption and noise reduction capabilities; the introduction of hollow glass microspheres and cellulose nanocrystals further enhances the material's lightweight properties, flexural strength, and sound absorption and noise reduction capabilities. Therefore, this invention has broader application prospects.

The invention discloses a method for improving the thickness uniformity of a composite material based on a VARI technology, and relates to the technical field of composite material liquid forming. Comprising the following steps that a prefabricated part is laid on the surface of a tool, the surface of the prefabricated part is sequentially covered with demolding cloth and a flow guide net, and a composite body is formed; an inner-layer sealing bag is adopted to wrap the composite body and is connected with the glue injection pipe and the glue outlet pipe, and an inner bag packaging body is formed; after a breathable layer is laid on the periphery of the inner bag packaging body, the outer layer sealing bag is adopted for wrapping, a double-layer bag packaging body is formed, and the outer layer sealing bag is provided with an air outlet; the double-layer bag packaging body is vacuumized until the prefabricated part is compacted and the thickness is stable, and a compacted prefabricated part is obtained; measuring the net glue injection pressure range of the compacted prefabricated part without springback in thickness; and on the basis of the net glue injection pressure range, the net glue injection pressure is adjusted, glue is injected into the compacted prefabricated part till no bubble is discharged from the resin flowing out of the glue outlet pipe, and then the composite material product is obtained after curing. The defects of air holes and poor glue in the composite material can be avoided, the thickness rebound of the local area of the prefabricated part in the glue injection process is avoided, and the thickness uniformity of the composite material is good.

The high-performance double-layer material energy-saving sliding plate brick comprises a working material layer, a non-working material layer, an iron shell, a fire clay layer, a casting hole and a coating layer, the working material layer and the non-working material layer are compounded to form a sliding plate brick body, the iron shell is fixedly connected with the body through the fire clay layer, the casting hole penetrates through the body and the iron shell, and the coating layer is arranged on the surface of the body. The side, away from the iron shell, of the cast hole and the body is a working material layer, the non-working material layer is tightly attached to the iron shell, and the coating layer is arranged on the surface of the working material layer. The invention aims to provide the high-performance double-layer material energy-saving sliding plate brick which is long in service life, can utilize the waste corundum recycled material, saves resources, reduces the cost and does not affect the overall performance, and the preparation method thereof.

The invention discloses an efficient and precise construction method for a double-layer hyperbolic metal roof based on BIM. The efficient and precise construction method comprises the steps that a double-layer metal roof BIM overall model is constructed; a datum control line of the roof bearing and supporting assembly is determined; according to the reference control line, the roof bearing and supporting assembly is positioned and installed; and the roof aluminum plate is subjected to wire arrangement positioning and installation, a joint area of the installed roof aluminum plate is glued, and finally the constructed roof aluminum plate is checked and accepted. According to the method, the loss rate of main materials and the labor input can be reduced, joints between the plates are reduced, and the overall waterproof and wind uplift-resistant performance of the roof enclosure structure is guaranteed.

The invention belongs to the technical field of coatings, and particularly relates to a refractory coating and a preparation method thereof, a refractory coating and a preparation method thereof, and a double-layer composite pipe with a flat inner surface. The fireproof coating comprises a component A, a component B and a component C, the component C is prepared from the following raw materials in parts by weight: 55-100 parts of functional filler and 1-2 parts of coupling agent; wherein the functional filler comprises an ammonium phosphomolybdate coated UIO-66 composite material and further comprises at least one of mica powder, glass flakes, silicon dioxide powder and aluminum oxide powder. According to the fireproof coating provided by the invention, the raw materials comprise the functional filler of the ammonium phosphomolybdate-coated UIO-66 composite material, so that the fireproof performance, the antistatic performance and the impact resistance of the coating can be improved.

1. The name of the design product: ceramic container (general jar). 2. The use of the design product: the product is suitable for multiple scenarios of home environment such as living room, dining room, kitchen, study room, etc., and has the functions of tableware and container. 3. The design points of the design product: the combination of shape and color. 4. The picture or photo that best indicates the design points: reference Figure 1 in use. 5. The design for which protection is sought includes color. 6. Other circumstances that need to be explained: the design product adopts double-layer design, and the outer part is transparent glass material.

The utility model discloses a double -deck corner backflow device relates to conveying equipment technical field, including upper corner conveying layer, lower corner conveying layer and elevator, and the elevator is arranged in one end of upper corner conveying layer and lower corner conveying layer, and upper corner conveying layer is located the top of lower corner conveying layer, upper corner conveying layer includes first upper conveying frame and second upper conveying frame, and constitutes the upper input layer of corner, lower corner conveying layer includes first lower conveying frame and second lower conveying frame, and constitutes the lower output layer of corner, and upper corner conveying layer and lower corner conveying layer are located the position of corner and are equipped with the upper push -board and lower push -board for promoting the transfer of box, and the elevator includes lifting frame, and lifting frame is equipped with the lifting platform for the backflow transfer of box from upper corner conveying layer to lower corner conveying layer, the utility model discloses can carry out the packing conveying operation of material processing equipment one side, and can realize corner conveying, can efficiently complete packing conveying.

The invention discloses a tunnel lining load distribution method and device based on single-layer and double-layer model coordinated deformation, and relates to the technical field of tunnel composite lining design. The method comprises the steps that a tunnel double-layer model structure is established according to surrounding rock parameters and a load distribution form, the tunnel double-layer model structure is used for simulating coordinated deformation between a primary support layer and a secondary lining layer, and the displacement response of the secondary lining layer is calculated through loading. And on the basis, a tunnel single-layer structure model without a primary support layer is established, iterative solution is performed through the displacement mapping relation according to the displacement response of the secondary lining in the composite lining tunnel, and a target load distribution coefficient is obtained. By constructing the tunnel double-layer model structure and utilizing the displacement mapping relation to carry out iterative calculation, dynamic quantitative evaluation of the stress state of the secondary lining is achieved, the accuracy and reliability of load distribution proportion analysis are improved, and therefore the stability and construction safety of the tunnel structure are effectively guaranteed.

This invention discloses a multiphase ceramic matrix composite material with a double-layer interface, its preparation method, and its applications, relating to the field of ceramic matrix composite technology. The method involves sequentially coating the surface of Al2O3 whiskers with an interfacial layer of LaPO4 and Y2O3 to obtain Al2O3... 3W Prefabricated body; Al2O 3W A preform is embedded in Al-Y alloy powder, and after melt infiltration, it undergoes oxidation treatment in an air atmosphere to obtain a multiphase ceramic matrix composite material with a double-layer interface. The process provided by this invention has a short cycle time, high stability and reliability, and good engineering value, which is conducive to broadening the application fields of YAG-based composite materials.

The utility model provides a double-layer combined plate type insulation unit and system for a low-temperature storage tank, and the insulation unit comprises a first insulation block which is connected with a tank body outer plate through a first bolt and comprises an inner loose insulation layer, a metal grid layer and a compact insulation layer which are sequentially arranged on the tank body outer plate; in the Y direction, the metal grid layer of the first insulation block is flush with the inner loose insulation layer, and the two ends of the metal grid layer of the first insulation block extend to the outside of the compact insulation layer in the Y direction to form first extension sections respectively; the insulating block II comprises an inner loose insulating layer, a metal grid layer and a compact insulating layer which are sequentially arranged on the outer plate of the tank body; in the Y direction, one end of the metal grid layer extends to the outside of the inner loose insulating layer and the outside of the compact insulating layer, one section of the metal grid layer extending to the outside of the inner loose insulating layer protrudes outwards and forms a second extension section, and the second extension section is in lap joint with one of the first extension sections. According to the utility model, the installation speed is improved.

A wheel includes a hub portion configured to rotate about a rotational axis. A plurality of blades extends radially outward from the hub portion. Each blade of the plurality of blades includes a leading edge and a trailing edge. The hub portion and the plurality of blades include a substrate metal that includes aluminum or an alloy thereof. The substrate metal of the plurality of blades has coated directly thereon a first coating layer including electroless nickel-phosphorous. The first coating layer has coated directly thereon a second hard coating layer that overlies the leading edges of the plurality of blades and that is formed of a physical vapor deposition-compatible material.

ZEOLITH / ELASTOMER COMPOSITE MATERIAL The present invention relates to a composite material comprising a) at least one elastomer, and b) an amount equal to or greater than 30% by weight, relative to the total weight of said composite material, of type 3A zeolite, the cationic sites of which are occupied by the potassium cation, the sodium cation, at least one cation of an alkaline earth metal from group IIA of the periodic table, and the hydronium cation. The invention also relates to the use of said composite material as an adsorbent material, for the manufacture of masterbatches, for packaging, and for the manufacture of double glazing. Fig.: none

To provide a floor trim material that can be surely fastened to a floor surface without increasing the width of a base material, can have a thin basis weight of a cover material, is hard to crack even when stepped on, and has a good appearance. [Solution] A long interior component comprising a pair of cover materials 1 and a base material 2, with the base material 2 being able to be fixed to the floor surface by floor fixing means 3, wherein a convex portion 12 consisting of a single protrusion along the longitudinal direction is formed on the underside of the face 11 of the cover material 1, allowing the edge of the face 11 to be placed on the edge of the floor material F, while twin walls 22 consisting of two protrusions along the longitudinal direction are formed in approximately the centre of the upper surface of the base plate 21 of the base material 2, allowing the convex portion 12 to be inserted into a recess 22A between the twin walls 22 and secured in place, and a notch 22B is formed in the twin walls 22, allowing the base plate 21 to be cut at this notch 22B, making the widthwise length of the face 11 of the cover material 1 greater than the widthwise length of the base plate 21 of the base material 2.

Set forth herein are materials, systems, and methods for sintering bilayers that include a layer of a metal and a layer of a ceramic.

A dual-layered graphene-based friction material is a paper matrix that is used as a high friction engagement lining in applications such as clutch plate or wet brake plate linings. The material uses a porous yet elastic fibrous base layer and a top layer containing thermally conductive graphene nanoplatelets mixed with a thermosetting resin. The top layer increases the overall thermal capacity while maintaining sufficient material porosity that allows satisfactory cooling oil flow through the material.

This invention discloses a method for preparing high-temperature resistant polyimide foam material, comprising: preparing a foamable precursor powder using aromatic dianhydride and diamine; performing bilayer extrusion and foaming molding using two single-screw extruders, wherein one extruder extrudes and foams the foamable precursor powder, and the other extrudes fiber-reinforced thermoplastic resin; the two are compounded at a co-extrusion die, and shaped by a shaping die to obtain a polyimide foam composite material with a fiber-reinforced resin layer on the surface; cutting and collecting polyimide foam strips or foam particles of equal length, filling them into a die, and then hot-pressing to obtain the polyimide foam composite material. This invention significantly improves the operability of polyimide foam preparation and simplifies subsequent molding processes. This invention also provides a high-temperature resistant polyimide foam material obtained by the above preparation method, which can simultaneously provide high compressive strength, high modulus, and low density, and is easy to scale up for production.

1. Name of the design product: Double-layered plate (Jinbao). 2. Use of the design product: The design product is used as a plate for containing dishes. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: assembly state diagram.