176 results about "Secondary layer" patented technology

The invention provides an anchoring structure, a film system and a liquefied gas storage tank. The anchoring structure comprises a stud, a nut and a secondary layer anchoring plate. The film system comprises a main layer film, a main plywood, a secondary layer film and a secondary plywood. The secondary layer anchoring plate is connected to the upper portion of the secondary plywood, the secondary layer thin film is connected to the upper portion of the secondary layer anchoring plate, the first pressing plate arranged on the stud is pressed on the upper portion of the secondary layer thin film, the main plywood is arranged on the upper portion of the secondary layer thin film, the second pressing plate arranged on the stud is pressed on the upper portion of the main plywood, and the main layer thin film is arranged on the upper portion of the main plywood. And the nut is pressed above the main layer film, so that the film system is connected and fixed through the anchoring structure, and the connection strength of each layer in the film system is ensured. The area of the first pressing plate is larger than that of the first through hole, the area of the second pressing plate is larger than that of the second through hole, and the contact area of the nut and the main layer film is larger than that of the third through hole, so that the leakproofness of the film system is improved, and liquefied gas in the storage tank is prevented from leaking.

The invention relates to the field of low-temperature liquefied gas storage equipment, and discloses a low-temperature liquefied gas film storage tank and an installation method thereof.The low-temperature liquefied gas film storage tank comprises an outer tank and a plurality of insulation box structures installed on the outer tank; the insulation box structure comprises a secondary insulation box, a secondary shielding layer, a main plywood and a main shielding layer which are arranged in sequence, and the corrugation position of the main shielding layer corresponds to the corrugation position of a corrugated plate in the secondary shielding layer; a gap is formed between every two adjacent insulation box structures, a secondary layer connecting plate is connected between every two adjacent secondary shielding layers, a main layer connecting plate is connected between every two adjacent main shielding layers, and the secondary layer connecting plates and the main layer connecting plates are located above the gaps. The gap between the adjacent insulation box structures can be effectively processed, and the integrity and the sealing performance of the shielding layer are improved.

The invention discloses a novel high-temperature-resistant and corrosion-resistant aluminum alloy plastic-lined PP-RCT composite pipe, and relates to the technical field of composite pipelines. The composite pipe is of a five-layer gradient composite structure, wherein the outer layer is an anodized aluminum alloy base body, and the inner surface is provided with laser micro-texture anchoring points; the secondary layer is a chromium-free Dacromet anti-corrosion layer, and the interface bonding force is improved through a three-dimensional network structure; the third layer is a gradient curing bonding layer which is cured by stages to eliminate thermal stress; the fourth layer is a dynamic stress compensation layer for absorbing the thermal expansion difference between the metal layer and the plastic layer; and the inner layer is a PP-RCT functional layer which has high temperature resistance and corrosion resistance. The end of the composite pipe is sealed through laser welding, an embedded intelligent monitoring system is integrated, and axial stress and temperature are monitored in real time. Compared with the prior art, the invention is suitable for pipeline systems under extreme working conditions of petrochemical engineering, ocean engineering, high-temperature fluid transportation and the like.

The invention discloses a preparation method of an environment-friendly degradable single-sided perspective sticker, and belongs to the technical field of modified nano materials. The method comprises the following steps: (1) preparation of a multi-layer composite structure: mixing polylactic acid and poly (butylene succinate), adding nano-montmorillonite and a surface modifier, and carrying out melt blending to form a first-layer melt; stirring poly (butylene adipate-co-terephthalate) and fluorescent carbon nanodots to form a second layer of melt; the first layer, the pressure-sensitive adhesive layer and the second layer are co-extruded and compounded to form a film blank. And (2) construction of the nano-film: biaxially stretching the film blank, imprinting a micropore array, dipping in the silver nanoparticle suspension, and drying to obtain the nano-film. And (3) coating functionalization treatment: immersing into a fluorine-containing nano coating solution, and curing. And (4) post-treatment: carrying out secondary curing. The obtained single-sided perspective sticker is suitable for the fields of buildings, vehicle privacy films and the like, and solves the problems of serious pollution and slow degradation of a traditional sticker.

The invention discloses a film type liquid cargo containment system which comprises a plane insulation module, a corner insulation module and a nitrogen pipeline, the plane insulation module and the corner insulation module are fastened on the inner wall of a storage tank cabin, and each of the plane insulation module and the corner insulation module is composed of a main layer insulation module and a secondary layer insulation module. The main layer insulation module is fixed above the secondary layer insulation module to form step surfaces, a first bridging module, a second bridging module and a corner region bridging module are respectively mounted on the step surfaces at different positions, and nitrogen pipe mounting grooves are formed in the first bridging module, the second bridging module and the corner region bridging module through which a nitrogen pipeline passes; the arranged nitrogen pipe mounting grooves are connected to form a nitrogen arrangement pipeline; the invention further discloses a nitrogen pipeline mounting method. According to the thin film type liquid cargo containment system, the nitrogen pipelines are embedded in the bridging modules, so that the flatness of the upper surface of the main layer insulation structure of the containment system can be kept, and the thin film type liquid cargo containment system is adaptive to more types of corrugated plate structures.

The invention relates to the field of thin film tank maintenance, and discloses a low-temperature liquefied gas storage tank heat insulation maintenance system and an installation method thereof.The low-temperature liquefied gas storage tank heat insulation maintenance system comprises a main shielding layer, a plurality of secondary-layer corrugated plates, a plurality of knots and a plurality of insulation box structures; the plurality of insulation box structures are used for being mounted on an outer tank; the insulation box structure comprises a secondary-layer insulation box, a secondary-layer steel plate and a main plywood which are arranged in sequence. A gap is formed between adjacent insulation box structures, the secondary corrugated plate is only arranged at the gap, and the side edge of the secondary corrugated plate is welded with the secondary steel plate; and the knots are arranged at the intersections of the adjacent gaps. According to the invention, the deformation of the corrugated plate is more uniform by reducing the shrinkage amount of a single insulation box, the workload of field installation can be reduced, and the procedure of traditional layered construction is optimized, so that the construction efficiency is improved, and the construction period is shortened.

The present disclosure is directed to a construction element produced by additive manufacturing, an additive manufacturing system for producing the construction element and a method for manufacturing the construction element. The construction element includes an outer layer. The outer layer is configured to define or form an enclosure. The construction element further includes an inner matrix. The inner matrix is formed within the enclosure. The outer layer and the inner matrix are formed integrally, by depositing successive layers using an additive manufacturing system. The inner matrix is defined by a first layup and a second layup. The first layup is laid along a first direction and across the enclosure. The second layup is laid juxtaposing the first layup. The first layup and the second layup define a plurality of air pockets in the inner matrix. Further, a filler material is infused into at least some air pockets of the plurality of air pockets.

The invention discloses a composite insulating material for a cabinet type current transformer. The composite insulating material comprises a substrate; a Cu layer on the substrate; a CuAl layer on the Cu layer; a first Al (2-x) GdxO3 layer on the CuAl layer; an Al < 2-y > Sm < y > O < 3 > layer on the first Al < 2-x > Gd < x > O < 3 > layer; a second Al (2-z) GdzO3 layer on the Al (2-y) SmyO3 layer; and an Al2O3 layer on the second Al (2-z) Gd (z) O3 layer. According to the composite insulating material, through film layer stacking structure design and technological parameter design, the aluminum oxide layer located on the outermost layer in the composite film layers can be in an amorphous state, the oxidation resistance of the aluminum oxide film layers is greatly improved, in addition, the composite film layers also have the oxidation resistance, and therefore the composite insulating material is suitable for being used for a large-scale production line. The oxidation resistance of the epoxy resin can also be improved.

A low-weight carpet tile and process for making the same, wherein the carpet tile comprises a facecloth having a plurality of face yarns tufted through a primary backing, an extruded polymer secondary backing layer, and a reinforcing scrim layer partially embedded within the extruded polymer secondary backing layer. The top surface and bottom surface of the carpet tile are defined by the facecloth and the reinforcing scrim layer, respectively. A polymer-based resin is extruded onto the facecloth to form an at least substantially uniform secondary backing layer, and the reinforcing serim layer is laid onto the extruded polymer secondary backing layer while the extruded polymer secondary backing layer remains above a softening temperature for the resin. The entire multi-layer web is then passed through a nip to embed the reinforcing scrim layer into the extruded polymer secondary layer, and the entire web is chilled.

A non-limiting example of the coated cutting tool of the present application has a substrate and a coating layer on the substrate. The coating layer has a first coating layer having a first layer containing Al2O3 particles and a second layer on the first layer. The second layer has, in order from the substrate side, a first film, a second film in contact with the first film, and a third film in contact with the second film. The first film, the second film, and the third film each contain Ti. The first film, the second film, and the third film each contain at least one selected from C and N. When the amount of N contained in the first film is a first N amount, the amount of N contained in the second film is a second N amount, and the amount of N contained in the third film is a third N amount, the following relationship is satisfied: the first N amount > the third N amount > the second N amount.

Disclosed is a bearing ring (1) having a sandwich structure of at least three layers (2, 4-1, 4-2, 6), a first layer (2) at least partially forming a running surface (8), a second layer (6) being arranged on the first layer (2) as an intermediate layer, and a third layer (4-1, 4-2) being arranged at least partially on the intermediate layer (6) and taking the form of a split ring.

The invention relates to a heat exchanger / reactor or heat exchanger comprising: - a main body (1) having, over at least one axial portion thereof, the general shape of a cylinder of revolution about a central axis (Y), the body (1) comprising: • a primary circuit comprising a plurality of primary layers (10) each comprising at least one primary channel (12), • a secondary circuit (25) comprising a plurality of secondary layers (20) each comprising at least one secondary channel (22), the secondary channel (22) extending longitudinally in a radial direction towards the side wall (4) of the body (1), and • a plurality of isthmuses (30), wherein the primary and secondary layers, separated by isthmuses, are distributed among a plurality of sectors (40), at least one of which sectors (40) comprises • a primary layer extending radially along a non-rectilinear primary axis of extension (Yp), and • a secondary layer extending along a non-rectilinear secondary axis of extension (Ys).

A method to manufacture a structural component in composite material reinforced with stiffening stringers and comprising a skin and plurality of stringers having a hollow section fixed to said skin. The method comprising: a) laminating a plurality of first layers of composite material onto an external surface of a cure tool, b) laminating pluralities of second layers of composite material on longitudinal hollow expandable inserts, c) positioning each reinforcing element on a face of a second skin, d) holding each reinforcing element on the face of the second skin; e) housing the tool, skin and reinforcing elements inside a vacuum bag; and f) compacting together the first layers forming the skin with the second layers forming the stringers; g) housing skin and reinforcing elements in a further vacuum bag; and h) sealing the further vacuum bag; and i) applying preset temperature and pressure to the outside of the vacuum chamber.

The invention belongs to the technical field of laser processing, and particularly relates to a water-jet guided laser regulation and control method for drilling of a double-layer composite material. By adjusting the water film thickness and the cooling strength in real time, the problem that a heat affected zone is too large in traditional laser machining is effectively solved, so that the drilling precision and efficiency of the double-layer composite material are improved, in the machining process, the distribution uniformity of laser energy can be controlled, it is ensured that a consistent heat effect is formed on the surface of the material, and the machining quality is improved. Therefore, the deformation or ablation phenomenon caused by local overheating is reduced, material damage caused by excessive heat input is avoided, meanwhile, by dynamically adjusting the laser power and the pulse width and combining a stable water film formed by water-guided spraying, heat diffusion is effectively restrained, the integrity of the second layer material is protected, and the service life of the second layer material is prolonged. In the machining process of the first layer of material, the area except the target punching area of the second layer of material is prevented from thermal damage, and therefore the purpose of improving the overall machining quality of the double-layer composite material is achieved.

The invention discloses a production process of a novel Metal Mesh product. The production process comprises the following steps: 1) cleaning a glass substrate; 2) plating a layer of Metal on the surface of the glass substrate as a first Metal; 3) exposing, developing and etching the first Metal; 4) manufacturing a first OC layer on the first Metal; 5) plating a layer of Metal on the first OC layer as a second Metal; 6) exposing, developing and etching the second Metal; (7) plating an IM layer; 8) making a second OC layer on the IM layer, directly plating a first Metal on the original glass, replacing the previous need of OC0 and IM1 film layer bottoming to avoid the problem of adhesive force, and saving the cost at the same time; the line width tolerance of the first Metal electrode and the second Metal electrode is reduced, the control is consistent in the production process, and the situation that two film colors appear visually is avoided.

Method for producing a value or security document (11) consisting of a plurality of layers (3, 5), in which a hot melt adhesive (4) made of a latently reactive adhesive material is applied in a flowable form or supplied as a film to at least a first or second layer (3, 5) or to both layers (3, 5), and the at least two layers (3, 5) are combined to form a composite body (6) with the hot melt adhesive layer (4) provided therebetween, in which the latently reactive adhesive material is heated and the layers (3, 5) are glued to one another by subsequent cooling, characterized in that a curing time of the hot melt adhesive is shortened by at least one filler introduced into the latently reactive adhesive material.

The invention relates to the technical field of building formworks, in particular to a multi-layer composite formwork for a concrete building and a construction method of the multi-layer composite formwork for the concrete building. A multi-layer composite board is mainly composed of a first layer, a second layer, a third layer, a fourth layer and a fifth layer and is manufactured through pressing; the multi-layer composite board is sequentially provided with a first layer, a second layer, a third layer, a fourth layer and a fifth layer in an abutting mode from top to bottom, the lower surface of the first layer is attached to the upper surface of the second layer, the lower surface of the second layer is attached to the upper surface of the third layer, the lower surface of the third layer is attached to the upper surface of the fourth layer, and the lower surface of the fourth layer is attached to the upper surface of the fifth layer. The upper surface of the first layer or the lower surface of the fifth layer is used for being attached to concrete. The multi-layer composite material template is free of a film coating agent, light in weight, easy to demould, high in plasticity, high in turnover frequency, good in forming effect and recoverable.

To provide a model component in which gradation can be recognized with stable quality.SOLUTION: A model component 1 is configured such that a first layer 21 is stacked on a second layer 22. The first layer 21 is formed of a semitransparent material of a first color and has irregularities. The second layer 22 is formed of a semitransparent material of a second color and has irregularities. The first layer 21 has a projection part and the second layer 22 has an opening. By the projection part penetrating the opening, the first layer 21 and the second layer 22 are connected.SELECTED DRAWING: Figure 1

[Problem] To provide: a model component having stable quality and having gradation; and a production method therefor [Solution]A model component having: a first layer formed using a first material having a first color; and a second layer that covers at least part of the first layer and comprises a second material having a second color that is different from the first color. The second layer includes a region having a thickness in at least one section that is less than other sections. The region includes a section in which the first layer is exposed to the surface of the second layer.

The invention provides a preparation method of a water-proof and oxygen-proof nanocrystal composite material, which comprises the following steps: atomizing and drying a solution I containing a nanocrystal precursor and a polymer to obtain nanocrystal composite particles, dispersing the nanocrystal composite particles in a colloidal solution, ultrasonically and uniformly mixing the nanocrystal composite particles with a solution II containing a water-proof and oxygen-proof polymer, and performing secondary atomizing and drying to obtain the water-proof and oxygen-proof nanocrystal composite material. And forming a polymer protective layer with water and oxygen barrier property on the surfaces of the nanocrystalline composite particles to obtain the water-proof and oxygen-proof nanocrystalline composite material. The nanocrystalline composite material can be dispersed in packaging base materials such as EVA and POE, has high photoelectric conversion efficiency, maintains long-term environmental stability, and remarkably prolongs the service life of a display device. According to the preparation method, the nanocrystalline composite material is prepared by adopting a secondary spray drying process, the destructive effect on the nanocrystalline material in a traditional liquid phase coating method is avoided, the second waterproof oxygen-barrier polymer layer can greatly improve the environmental stability of the nanocrystalline material, and meanwhile, the nanocrystalline material can be prepared with high efficiency and high material utilization rate; and the method is suitable for large-scale production.

Provided is a mask that easily maintains a three-dimensional shape covering a mouth space. A mask (1) comprises a cover part (2) having a plurality of base material sheets. The base material sheets have a pleat part (18) folded in a pleated shape with a fold line extending in the lateral direction as a base point. The cover part has a first layered region (R41) and a second layered region (R42) that are adjacent to each other via a fold line and overlap each other in an unextended state. The cover part is provided with a joining part (50) extending in the lateral direction, the joining part (50) joining the plurality of base material sheets. The joining part is provided in only one of the first layered region and the second layered region so as not to straddle any fold line in the unextended state. The joining part has a first joining part (51) and a second joining part (52). The first joining part is disposed on both sides in the lateral direction across a first non-joining region (R11) straddling the lateral center of the cover part. The second joining part is disposed on both sides in the lateral direction across a second non-joining region (R12) straddling the lateral center of the cover part.

The invention relates to a bearing ring (1) having a sandwich structure of at least three layers (2, 4, 6), a first layer (2) at least partially forming a running surface (8), a second layer (6) being arranged on the first layer (2) as an intermediate layer, a third layer (4) being arranged at least partially on the intermediate layer (6), the first layer (2) being made of a first material, the intermediate layer (6) being made of a second material, the third layer (4) being made of a third material, the second material is different from the first material and the third material, and the second material of the intermediate layer (6) comprises a material that performs insulating, damping and / or weight-reducing functions.

A system and method for repairing fatigue cracks in a multilayer composite (140). The method includes repairing a fatigue crack at a first interface between a first layer of the multilayer composite and a second layer of the multilayer composite. The method further includes repairing a fatigue crack at a second interface between a second layer of the multilayer composite and a third layer of the multilayer composite. The method further includes anchoring the second interface with a third layer of the multilayer composite to prevent failure caused by fatigue cracks.

A low-weight carpet tile and process for making the same, wherein the carpet tile comprises a facecloth having a plurality of face yarns tufted through a primary backing, an extruded polymer secondary backing layer, and a reinforcing scrim layer partially embedded within the extruded polymer secondary backing layer. The top surface and bottom surface of the carpet tile are defined by the facecloth and the reinforcing scrim layer, respectively. A polymer-based resin is extruded onto the facecloth to form an at least substantially uniform secondary backing layer, and the reinforcing scrim layer is laid onto the extruded polymer secondary backing layer while the extruded polymer secondary backing layer remains above a softening temperature for the resin. The entire multi-layer web is then passed through a nip to embed the reinforcing scrim layer into the extruded polymer secondary layer, and the entire web is chilled.

The invention discloses an adjustable ultra-wideband terahertz metamaterial wave absorber, and belongs to the technical field of terahertz wave absorbers. The wave absorber is composed of a plurality of same metamaterial structure units which are periodically arranged, and each metamaterial structure unit is made of three layers of composite materials, wherein the first layer is a graphene pattern layer, the second layer is a polyimide dielectric layer, and the third layer is a copper reflecting layer. Wherein the graphene pattern layer adopts a combined design of four groups of square and L-shaped structures, and the four groups of structures form a biaxial symmetry layout through geometric coupling. The structure has the characteristics of wide absorption bandwidth, high absorption rate and dynamic adjustability, can realize more than 90% of efficient absorption in the frequency band of 2.28-4.68 THz, and can adjust the Fermi level of the graphene by externally applying bias voltage to realize rapid switching between the absorption state and the reflection state. The device is suitable for various application scenes such as terahertz communication, sensing and stealth.

The utility model discloses a double-beam multi-layer cutting machine. The double-beam multi-layer cutting machine comprises a cutting bed body, the cutting knife assemblies are connected with the cutting bed body in a sliding mode, and the number of the cutting knife assemblies is at least two; the secondary film covering device is used for winding an isolating film, the isolating film is used for covering a second layer of film on the first layer of film of the cut raw material laminated layer, and the secondary film covering device and the cutting knife assembly work at the same time; the negative pressure device is arranged in the cutting bed body, and a ventilation part is arranged on the upper surface of the cutting bed body. The cutting bed has the advantages that the cutting time of the raw material laminated layers on the cutting bed body is shortened, the overall processing speed of the raw material laminated layers is further increased, the secondary laminating device is used for carrying out secondary laminating on the multiple layers of raw material laminated layers, the possibility of layer-to-layer relative sliding is reduced, stable fixation of a multi-layer structure is guaranteed, and the production efficiency is improved. And therefore, the stability of the cutting processing operation of the double-beam cutting machine is improved.

The invention relates to a composite material film three-in-one thermal laminating device, and relates to the technical field of composite film production, the composite material film three-in-one thermal laminating device comprises a first layer film, a second layer film and a middle film, the upper surface of the first layer film and the lower surface of the second layer film are respectively provided with a circulating laminating outer film used for contact protection, and the circulating laminating outer film can be recycled. According to the application, the circulating laminating outer film made of a polytetrafluoroethylene (PTFE) material is introduced as a physical isolation layer and covers between the film and the hot pressing roller, so that the non-laminating surface of the film is prevented from being in direct contact with the hot pressing roller, and impurities (such as residual colloidal particles and dust) can be prevented from being adhered to the surface of the hot pressing roller; the defects of concave-convex surface, scratches and the like of the composite film caused by roll surface pollution are fundamentally eliminated, and meanwhile, the PTFE film has the characteristics of high heat resistance (less than or equal to 260 DEG C) and low surface energy, so that the PTFE film is not easy to adhere impurities and can be repeatedly used, and the flatness and the yield of the finished film are remarkably improved.

The invention relates to an insertion element (1), in particular for guiding a rope or a cable, in particular for guiding a rope or a cable of a cableway installation. The interposer element (1) comprises: a main layer (2); and a secondary layer (3) arranged in and / or on the primary layer (2). The insert element (1) has a first insert element side (4), which is designed to be in contact with an element (8) to be guided, in particular a rope or cable, in a guiding direction, in particular in a circumferential direction, and a second insert element side (6) opposite the first insert element side (4). The primary layer (2) and the secondary layer (3) differ in at least one material property. The insertion element (1) has a substantially constant cross-section in the guiding direction. The insert element (1) extends in a cross-section in a radial direction (R) and in a width direction (B), which are each orthogonal to the guide direction and orthogonal to each other. The invention further relates to a roller system (100) and to a method for producing an insert element.