15results about How to "Prevent interfacial peeling" patented technology

The invention discloses a foundation top surface frost heaving crack treatment device and a foundation top surface detection and repair method.The inhibition structure comprises multiple layers of annular units distributed in the longitudinal direction of a concrete body, and each layer of annular unit is provided with multiple annular pipes distributed in a concentric circle array; all the annular pipes in the same layer of annular units are communicated with one another through first communicating pipes, and every two adjacent layers of annular units are communicated with one another through second communicating pipes. The detecting and repairing method comprises the steps that after a restraining structure is arranged and formed, concrete is poured, so that the concrete wraps the restraining structure, and a concrete body is obtained; a through hole penetrating into the restraining structure is formed in the surface of the concrete body; and pressure data in the inhibition structure is obtained, a hydrophobic material is poured into the inhibition structure after it is determined that cracks exist in the inhibition structure, and the cracks in the inhibition structure are repaired through the hydrophobic material. According to the invention, crack development inhibition and rapid crack repair of the top surface of the power transmission tower foundation in a high cold environment are realized.

The utility model relates to the field of lithium ion battery preparation discloses a kind of soft package lithium ion batteries. Battery includes: aluminium plastic film casing and internal electric core, the aluminium plastic film casing has the chamber formed by sealing, the electric core is encapsulated in the chamber, the aluminium plastic film casing includes the positive edge of electrode extraction with, and side edge without electrode extraction, the side edge is bent at least twice, forms a folded edge structure, in the folded edge structure, between each adjacent two the folded edge area of stacking, between the folded edge area of innermost layer and the side of the electric core, all are bonded by hot melt adhesive layer. The scheme is especially suitable for improving the sealing reliability of ultrathin soft package lithium ion battery.

The invention provides a coating for castings. The coating comprises the following components: 60-65 parts of modified quartz powder; 3-5 parts of elastic PI particles; 3-5 parts of phenolic resin; 2 to 3 parts of bentonite; 3 to 5 parts of PI chopped fiber; 0.8 to 1 part of CMC (carboxymethyl cellulose); 1 to 1.8 parts of PVA (Polyvinyl Alcohol); 0.2 to 0.4 part of a defoaming agent; 25 to 30 parts of water; the modified quartz powder is obtained by compounding quartz powder with different particle size ranges, the quartz powder with the particle size of 200-350 meshes accounts for 40-50%, the quartz powder with the particle size of 400-600 meshes accounts for 30-40%, and the quartz powder with the particle size of 700-1000 meshes accounts for 10-20%. Through synergistic optimization of the components, the core pain points of drying cracking, high-temperature failure and air hole sand burning of a traditional phenolic resin-based coating are solved, the environment-friendly phenolic resin-based coating has the advantages of being environmentally friendly, compliant and feasible in industrialization, and an efficient solution is provided for research, development and application of high-performance coatings in the casting industry.

The invention relates to the technical field of polymer composite materials, in particular to a high-performance heat-insulation explosion-proof PET film for an automobile and a preparation method of the high-performance heat-insulation explosion-proof PET film. The high-performance heat-insulation explosion-proof PET film comprises the following raw materials in parts by weight: 60-80 parts of PET resin, 3-8 parts of an additive A, 4-9 parts of an additive B, 1-3 parts of a plasticizer, 0.5-1.5 parts of an antioxidant 1010, 0.3-0.8 part of an ultraviolet light absorber and 1-2 parts of a coalescing agent. The additive A enhances interface bonding and thermal stability through a composite structure of lysine diisocyanate and modified rosin and improves the mechanical strength of the film, the additive B is formed by compounding surface-activated aramid fibers and mica powder, and the high strength of aramid fibers and the layered reflection structure of mica are utilized to synergistically enhance the heat insulation and impact resistance. Therefore, the PET film obtained by the invention has good heat insulation performance.

A fluid container (3) is provided with a first metal member (31), a second metal member (32), an adhesive section (34), a first interface (4), and a second interface (5). The first metal member (31) contains chromium. The second metal member (32) contains chromium. The adhesive section (34) is configured from an oxide having chromium as the main component. The adhesive section (34) adheres the first metal member (31) and the second metal member (32) to each other. The first interface (4) is an interface between the first metal member (31) and the adhesive portion (34). The second interface (5) is an interface between the second metal member (32) and the adhesive portion (34). The first interface (4) has a first inclined portion (41). The first inclined portion (41) is inclined with respect to the surface direction of the first metal member (31).

The present application relates to the technical field of paint, in particular to a polyurethane powder coating with good heat preservation and insulation performance, which is configured according to the mass fraction of each raw material: 25-40 parts of hydroxyl acrylic acid resin; 10-20 parts of hexamethylene diisocyanate trimer; 8-18 parts of rice husk ash derived porous silica microspheres; 5-15 parts of waste tire rubber powder modified carbonized particles; 3-8 parts of functional filler; 0.5-1.5 parts of polyethylene wax leveling agent; and 0.2-0.8 parts of polyether modified silicone defoaming agent. In the present application, the thermal bridge effect caused by interface defects can be reduced, the porous structure can significantly reduce the overall thermal conductivity of the coating through the synergistic effect of scattering thermal radiation, inhibiting gas molecular convection and conduction and prolonging the solid heat conduction path, and this structural characteristic makes it an ideal insulation functional unit, thereby greatly improving the heat preservation performance of the coating.

This invention discloses a method for preparing a surface-modified oxide solid electrolyte, comprising the following steps: S1: reacting an oxide solid electrolyte matrix with a bifunctional ionic liquid modifying compound in the presence of a catalyst under an inert atmosphere to obtain an intermediate of a surface-grafted ionic liquid monomer; S2: subjecting the intermediate obtained in step S1 to a free radical copolymerization reaction with an ethylene glycol divinyl ether monomer in the presence of an initiator, thereby in-situ copolymerizing the grafted ionic liquid monomer and the ethylene glycol divinyl ether monomer to form a polymer coating layer, thus obtaining the surface-modified oxide solid electrolyte. The preparation method of this invention not only eliminates interfacial side reactions through chemical bonding between the ionic liquid modifying compound and residual alkali / hydroxyl groups on the electrolyte surface, but also forms a polyionic liquid / polyether composite coating layer through in-situ copolymerization, possessing both high ionic conductivity and flexible segment characteristics, significantly reducing interfacial impedance and inhibiting lithium dendrite growth.

The invention discloses a polymorphic fiber reinforced resin-based composite structure, and belongs to the technical field of fiber reinforced composites, the polymorphic fiber reinforced resin-based composite structure comprises a polymorphic reinforced fiber system and a modified resin composition, the polymorphic reinforced fiber system comprises continuous reinforced fibers and gradient length discontinuous fibers, modified layers are arranged on the surfaces of the continuous reinforced fibers and the gradient length discontinuous fibers; the modified resin composition shows a single glass transition temperature before and after being heated at 400 DEG C for 1 hour, and the performance retention rate meets preset requirements after being aged at 300 DEG C for 1000 hours; through the synergistic effect of the fiber surface modification layer and the epoxy group modified polyarylene sulfide compatilizer, the interface bonding effect between the fiber and resin and between fibers in different forms is effectively enhanced; and by compounding the anti-aging agent, the degradation speed of the resin in a high-temperature environment can be delayed, the composite material is ensured to keep stable performance under a long-term high-temperature working condition, and the use requirements in the high-temperature environment are met.

This invention relates to the field of vehicle interior technology, and discloses a light-emitting automotive fabric headliner, its preparation method, and a vehicle. The method includes: providing structural yarns and functional yarns, wherein the functional yarns are electroluminescent fibers with electrode connecting sections at both ends; weaving the functional yarns and the structural yarns into a fabric, with the electrode connecting sections of the electroluminescent fibers extending from a predetermined position on the fabric; performing heat setting on the woven fabric, and then hot-pressing it using a mold to obtain the light-emitting automotive fabric headliner. By applying the technical solution of this invention, the intrinsic integration of the electroluminescent function and the fabric substrate can be achieved.

The invention provides an electrochemical device and electronic equipment, the electrochemical device comprises a positive electrode, a negative electrode and a diaphragm, the diaphragm comprises a base film and a coating layer, the coating layer comprises a first coating layer and / or a second coating layer, the coating surface density of the first coating layer is a g / m < 2 > / mu m, the coating surface density of the second coating layer is b g / m < 2 > / mu m, an electrolyte contains a fluorosulfonamide compound, and the electrolyte contains an electrolyte. The mass content of the fluorosulfonamide compound in the electrolyte is c%, and the binding power efficiency of the electrolyte is M; the following relational expression is satisfied: M = 25% * a + 75% * b; c / M is greater than or equal to 2.67 and less than or equal to 49.52; through the synergistic effect of the coating layers on the two sides of the diaphragm, the cycling stability, the rate capability and the safety of the battery are improved, meanwhile, the lithium dendrite penetration risk is effectively inhibited, and good dimensional stability is kept under the high-temperature condition; by synergistically limiting the coating surface density of the first coating layer and the second coating layer and the mass content of the fluorosulfonamide compound, the cycling stability, the interface compatibility and the high-temperature storage performance of the lithium ion battery can be remarkably improved.

This invention provides a method for preparing carbon-coated lithium manganese iron phosphate cathode material, belonging to the field of battery cathode material technology. The method includes the following steps: co-precipitating a mixed solution of iron, manganese, and phosphorus sources with a precipitant solution, and drying to obtain a lithium manganese iron phosphate precursor; adding a lithium source, and calcining and grinding in an inert gas atmosphere to obtain lithium manganese iron phosphate powder; ball milling the lithium manganese iron phosphate powder with a flux, dispersing it in a carbon source solution, uniformly coating the carbon source, and then drying, calcining in stages, and ball milling to obtain the final product. By controlling the rate of reaction in stages with the phosphorus, manganese, and iron source solutions, the uniformity of precursor nucleation and coating is improved; the use of a mixed lithium source and staged calcination reduces lithium volatilization; and coating the lithium manganese iron phosphate powder with a modified nitrogen-doped porous carbon source generates the lithium manganese iron phosphate cathode material, enhancing its conductivity.

The invention relates to the technical field of high-performance metal coatings and underwater engineering protection, in particular to a wear-resistant and corrosion-resistant high-entropy alloy coating for a deepwater deeply-buried hydraulic metal structure and a preparation method and application of the wear-resistant and corrosion-resistant high-entropy alloy coating. The invention provides a wear-resistant and corrosion-resistant high-entropy alloy coating for a deepwater deeply-buried hydraulic metal structure. The wear-resistant and corrosion-resistant high-entropy alloy coating is prepared by depositing high-entropy alloy powder of a core-shell structure on the surface of a matrix through a blue laser cladding process, the high-entropy alloy powder of the core-shell structure comprises an inner core and an outer shell. The inner core is made of FeCoNiCrMn high-entropy alloy powder; and the shell is an Al-Ti-O shell layer. The wear-resistant and corrosion-resistant high-entropy alloy coating provided by the invention has excellent microhardness, wear resistance and corrosion resistance, is suitable for being used in a water depth environment of 200 m or below, and has a wide application prospect in the field of protection of deep-water deeply-buried hydraulic metal structures.

The invention relates to the technical field of alloy coating materials, and particularly discloses an anti-oxidation coating for a high-pressure hot-pressing mold and a preparation method of the anti-oxidation coating. The high-pressure hot-pressing mold anti-oxidation coating comprises a transition layer and a functional layer which are sequentially arranged from a mold base body to the outside, the transition layer is a TiN-SiC gradient composite layer, the functional layer takes Al2O3-NiCrAlY as a base body, and nano ZrB2 and rare earth CeO2 which are subjected to double modification treatment are compositely doped; and the dual-modified nano ZrB2 is ZrB2 particles which are coated with a silane coupling agent KH-560 and a NiCr alloy. The anti-oxidation coating of the high-pressure hot-pressing mold has both oxidation resistance and wear resistance, and the high-temperature hardness stability and wear resistance of the anti-oxidation coating are effectively enhanced.

The application relates to the technical field of alloy coating materials, and particularly discloses a high-pressure hot-pressing die oxidation-resistant coating and a preparation method thereof. The high-pressure hot-pressing die oxidation-resistant coating comprises a transition layer and a functional layer arranged outward from a die base body, the transition layer is a TiN-SiC gradient composite layer, the functional layer takes Al2O3-NiCrAlY as a base body, and is compounded and doped with double-modified nano ZrB2 and rare earth CeO2; the double-modified nano ZrB2 is ZrB2 particles coated with a silane coupling agent KH-560 and a NiCr alloy. The high-pressure hot-pressing die oxidation-resistant coating has oxidation resistance and wear resistance, and effectively enhances the high-temperature hardness stability and wear resistance of the oxidation-resistant coating.

The present application relates to hydrogen energy preparation technical field, specifically relates to a kind of porous transport layer for proton exchange membrane water electrolysis cell and its preparation method and application.The porous transport layer includes titanium matrix and composite coating, the composite coating includes Ta barrier layer, PtTa transition layer and Pt surface conductive layer in turn from matrix to outside.The present application adopts magnetron sputtering process to prepare the composite coating, with the characteristics of process parameter precision controllable, batch preparation repeatability excellent, can be widely applied to the surface modification of porous transport layer in proton exchange membrane water electrolysis device, effectively improve the overall performance and service life of electrolyzer.