353 results about "Interfacial adhesion" patented technology

The invention relates to a polymer binder for a sulfide solid-state battery as well as a preparation method and application of the polymer binder. The binding agent is formed by copolymerizing vinyl triethoxy silane, 4-vinyl phenylboronic acid lithium and styrene. Silane groups are introduced, the interface adhesiveness with sulfide electrolyte is enhanced through the coupling effect of the silane groups, meanwhile, water in a system is consumed through a condensation reaction, and the water content of an electrolyte membrane is reduced; 4-vinyl phenylboronic acid lithium provides dissociation lithium ions, the ionic conductivity of the binder is improved, and the negative influence on the conductivity of sulfide electrolyte is reduced; the styrene group improves the solubility of the binder in a non-polar solvent. The binder can be dissolved in solvents such as toluene, xylene and the like, and is mixed with sulfide electrolyte to form a film through a wet coating process, and the process compatibility is high. The binder disclosed by the invention has the characteristics of high cohesiveness, ionic conductivity and low water content, and the interface stability and electrochemical performance of the sulfide solid-state battery can be remarkably improved.

The invention discloses a multi-layer composite barrier film and a production process thereof, and belongs to the field of polymer composite materials. Aiming at the problems of obvious performance attenuation, poor interlayer binding force and low step-by-step compounding process efficiency of a barrier film in a humid and hot environment in the prior art, the invention provides a five-layer asymmetric structure design: an outer layer, a bonding layer, a barrier layer, a bonding layer and an inner layer. Wherein the barrier layer is formed by blending EVOH and MAH-PA6 and cooperating with nano montmorillonite to form a multi-barrier network, so that the oxygen permeability is smaller than or equal to 0.3 cm / (m.24h. 0.1 MPa), and the water vapor permeability is smaller than or equal to 1.5 g / (m.24h). The production process innovation comprises five-layer co-extrusion melt flow rate ratio control, three-roller gradient cooling and a bidirectional plasma processing technology, the continuous production speed is larger than or equal to 120 m / min, and the interlayer peeling strength is larger than or equal to 8 N / 15 mm. The barrier property stability is remarkably improved.

The microbial remediation ceramsite comprises microorganisms, nutrient substances, modified porous slow-release Ca < 2 + > ceramsite and a cement-based protective shell, the microorganisms and the nutrient substances are loaded in the modified porous slow-release Ca < 2 + > ceramsite, and the cement-based protective shell wraps the outer surface of the modified porous slow-release Ca < 2 + > ceramsite. The surface of the ceramsite is modified by an aggregation-crosslinking method, and the modified microbial ceramsite carrier has higher microbial loading capacity and better stability under the dual actions of physical adsorption and valence bond combination, so that the repair effect of the ceramsite on cracks is further ensured; the cement-based protective shell adopts epoxy resin, so that the cylinder compressive strength of the ceramsite is improved, and microorganisms and nutrient substances are protected from being damaged by a high-alkalinity environment; the cement-based mixed powder is selected to enhance the interface adhesive force between the ceramsite and cement concrete, the sulphoaluminate cement in the mixed powder ensures the strength of the ceramsite in the early stage, and the fly ash, the silica fume, the nano-silica and other materials enable the later strength of the ceramsite to be continuously increased.

The invention relates to the technical field of preparation of high-performance composite materials, and discloses a multilayer fabric laying method for improving interlayer bonding strength of a carbon fiber material, which comprises the following steps: step 1, selecting carbon nanotubes or graphene sheets as nanoparticles, carrying out chemical oxidation treatment to introduce functional groups, and carrying out functionalization treatment by using a silane coupling agent; step 2, mixing the functionalized nano particles with epoxy resin in a high-shear-force mixing device to form uniform nano reinforced resin; and 3, weaving the carbon fibers according to a predetermined three-dimensional structure mode by using a three-dimensional weaving machine, and monitoring the fiber tension and the weaving density in real time in the weaving process. By using nanoparticles to reinforce the composite material and carrying out chemical oxidation and coupling agent functionalization treatment, the interface adhesive force between the carbon fibers and the epoxy resin is improved, functional groups can form stronger chemical bonds with the resin, the interlaminar shear strength of the composite material is improved, and the overall structural integrity and durability of the material are enhanced.

The invention discloses a graphite crucible silicon infiltration resistant coating based on a gradient boron nitride-silicon carbide composite structure and a preparation method thereof. The coating is composed of hexagonal boron nitride nanosheets, beta-type silicon carbide nanowires, yttrium aluminum garnet precursor sol and the like, and effective blocking of 1500-1600 DEG C silicon melt is achieved through gradient structural design and an in-situ self-repairing mechanism. The preparation process comprises the steps of h-BN activation, S C carbon layer deposition, slurry mixing and spraying and segmented heat treatment. The molten silicon contact angle of the coating reaches 158 + / -2 degrees at the temperature of 1550 DEG C, through cracks do not exist after 50 times of thermal shock circulation, the coating is effective after being continuously used for 48 batches under the industrial working condition, the problems of silicon infiltration interface adhesion and thermal shock failure of a traditional graphite crucible are solved, and the coating has remarkable industrial application value.

The invention relates to a low-temperature-resistant epoxy resin adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials. The modified epoxy resin adhesive comprises the following components in parts by weight: 90-120 parts of epoxy resin, 8-24 parts of a curing agent, 1-3 parts of a diluent, 0.5-5 parts of a curing accelerator, 4-18 parts of graphite, 1-4 parts of a hyperbranched polymerization flexibilizer and 10-30 parts of conductive filler, polyimide in the hyperbranched polymerization flexibilizer is difficult to crystallize, has no interchain winding, and cooperates with a flexible Si-O-Si chain segment with high bond energy and large bond angle to enhance low-temperature tensile strength and toughness, and chloroprene rubber effectively improves impact resistance and bending resistance; according to the low-temperature-resistant epoxy resin adhesive disclosed by the invention, a conductive network is constructed by indium tin oxide, good conductivity and chemical corrosion resistance are given to a matrix, a polyaniline layer is used for modifying a structural body and enhancing interface adhesion, and the prepared low-temperature-resistant epoxy resin adhesive not only has good low-temperature-resistant toughening and conductive effects, but also has excellent corrosion-resistant and flame-retardant effects.

The invention discloses multi-solvent synergistically activated low-temperature semi-sintered copper paste and a preparation method and application thereof, and belongs to the technical field of conductive paste. The multi-solvent synergistically activated low-temperature semi-sintered copper slurry comprises the following raw material components in percentage by mass: 82-88% of conductive filler, 2-3% of a resin carrier, 4-7% of an activating solvent, 4-7% of a dispersing solvent and 2-3% of a curing agent. Through cooperation of multiple solvents, full-stage activation of the copper particles is achieved, pre-connection and sintering of the copper particles before resin is completely crosslinked and cured are promoted, densification of the overall structure is improved, the insulation barrier effect of the resin is effectively avoided, the resistivity is reduced, meanwhile, inhibition of the resin on sintering of the copper particles is solved, and the service life of the copper particles is prolonged. And good balance between conductivity and interface adhesion is realized. Through resin curing, chemical bonding between the slurry and the substrate can be enhanced, a metal bond network among copper particles is expanded, and mechanical connection stability and electrical performance are guaranteed.

The invention discloses an anti-corrosion self-repairing super-amphiphobic coating film and a preparation method thereof, and belongs to the technical field of polymer coating materials. The coating film sequentially comprises a nano particle skeleton layer, a dynamic borate bond layer and a super-amphiphobic functional layer from inside to outside, and the three-layer gradient design synergistically realizes micro / nano structure stability, self-repairing and super-amphiphobic functions. The framework layer takes SiO2-TiO2 composite nanoparticles as a substrate and provides support; the dynamic boric acid ester bond layer forms a dynamic network through polycondensation of an organic boron compound, endows the self-repairing capability and enhances interface bonding; the super-amphiphobic functional layer is formed by grafting a fluorine-containing organosilicon compound and has hydrophobic and oleophobic properties. A multi-layer structure is constructed step by step, the reaction condition is mild, the operation is simple, the cost is low, the method is suitable for large-scale industrial preparation, the coating film has excellent super-amphiphobic performance and interface adhesion performance, the super-amphiphobic performance of the coating film can still be kept stable in long-term use or a complex environment, and the problem that an existing super-amphiphobic material is prone to damage is effectively solved.

The invention discloses a current collector composite copper foil film spreading method and device, and the method comprises the steps: applying a DC electric field to a current collector composite copper foil, forming an interface charge separation layer, obtaining reference capacitance distribution data, applying a film spreading tension to enable the material layers to generate microscopic displacement, and obtaining capacitance change data. The method comprises the following steps: analyzing and identifying an abnormal adhesion area through time domain difference and sliding window correlation, applying periodic micro-stress disturbance to the abnormal area to establish a stress-capacitance response relation to invert adhesion strength spatial distribution, and periodically recording a capacitance reference value to evaluate the interface adhesion fatigue degree. The device comprises an electric field processing module, a film spreading tension module, a correlation analysis module, a stress disturbance module and a fatigue evaluation module. According to the scheme, real-time dynamic detection and quantitative evaluation of the interlayer adhesion strength in the current collector composite copper foil film spreading process can be realized, the interface adhesion failure and fatigue accumulation state can be effectively identified, and accurate technical support is provided for battery current collector preparation process optimization and product quality control.

The invention discloses double-layer air filter paper with high interface adhesion as well as a preparation method and application of the double-layer air filter paper. The air filter paper is used as a paper base, nanofiber is deposited on the surface of the paper base through electrostatic spinning to form a fiber membrane, and then drying and thermal crosslinking are performed to obtain the air filter paper. A spinning solution adopted in the electrostatic spinning is a spinning solution obtained by dissolving polyurethane in a DMF / THF mixed solvent, and a silane coupling agent is added into the spinning solution for blending. The interface adhesive force between the fiber membrane and the paper base is improved by controlling the type, the adding amount, the thermal crosslinking temperature and the thermal crosslinking time of the added silane coupling agent, the diameter of the fiber is reduced to the nanoscale by regulating and controlling the parameters of the spinning solution, the composite stability of the double-layer air filter paper is guaranteed, and meanwhile the filtering performance of the air filter base paper is improved.

The invention provides an organopolysiloxane composition for bonding a high-toughness heat-conducting structure. The organopolysiloxane composition at least comprises the following components (A)-(F): (A) an organosiloxane polymer of which each molecule has two or more alkenyl groups; (B) an organosiloxane polymer having two or more Si-H bonds per molecule; (C) a reactive siloxy-terminated polymer (RST); (D) a thermally conductive filler; (E) a cyclic polysiloxane adhesion promoter; (F) a platinum catalyst. According to the invention, the reactive siloxy terminated polymer (RST) and the annular polysiloxane adhesion promoter are adopted, so that the interfacial compatibility of organic and inorganic materials is improved, the viscosity is reduced, and the interfacial adhesion is promoted; meanwhile, the two components can participate in the formation of a cross-linked network of the whole organic material, so that the inorganic filler and the annular structure effectively become a reinforcing and toughening structure of the compound material. The adhesive is suitable for bonding application of a thermal management system with high toughness, high heat conductivity and high reliability requirements.

The invention provides a liquid silicone rubber composition, a coated fabric and a preparation method and application thereof. The composition adopts pure organic silicon resin to replace fumed silica powder, and comprises the following components in percentage by weight: 20-50% of polysiloxane containing alkenyl at the tail end, 20-50% of organic silicon resin, 2-10% of hydrogen-containing silicone oil, 1-6% of catalyst, 0.5-3% of adhesive, 0.1-2% of inhibitor and 2-4% of optional color paste or stabilizer. The component A and the component B are homogenized and mixed for 2 h under the condition that the temperature is lower than or equal to 50 DEG C, and coating liquid is prepared according to the weight ratio of 10: 1; and after blade coating of 25g / m < 2 >, rapid curing is carried out at 190 DEG C for 1-5 minutes, and the silicone rubber coated fabric which is compact, tear-resistant, weather-resistant, excellent in interface adhesion and soft in hand feeling is prepared. The product is suitable for the fields of synthetic leather, personal protection materials or special conveyor belts.

The present invention provides a carbon-fiber-reinforced composite material having excellent tackiness, excellent compatibility with epoxy resins, and excellent interfacial adhesion while being capable of achieving high mechanical strength, and a method for producing a carbon-fiber-reinforced composite material. Provided is a carbon-fiber-reinforced composite material containing: carbon fibers; an epoxy resin; a curing agent; and a polyvinyl acetal resin, the polyvinyl acetal resin including structural units represented by the following formula (1), each R1 in the formula (1) being an alkyl group having a carbon number of 1 or greater:wherein R1s may be the same as or different from each other.

The present invention provides a cellulose nanofiber-containing molten mixture excellent in interfacial adhesion with a resin and having high dispersibility in the resin; and a resin composition capable of having, in a molded or formed product thereof, excellent tensile stress at yield and Charpy impact strength while maintaining sufficient mechanical properties. The molten mixture contains a mixture containing a cellulose nanofiber and a solvent; and 0.05 to 1 part by mass of an aqueous polyolefin resin dispersion based on 1 part by mass of the cellulose nanofiber.

The invention discloses a flexible conductive film with high substrate adhesion and a preparation method and application thereof, and belongs to the technical field of flexible conductive films and preparation thereof. The problem of low interface stability between a substrate and a conductive material in a sensing layer of an existing flexible sensor is solved. According to the invention, the uncured PDMS film made of the same material as the PDMS substrate material is firstly spin-coated on the PDMS substrate material, then the conductive material is sprayed on the uncured PDMS film under a heating condition, and the characteristic that the PDMS substrate material and the conductive material can be fused together during heating curing is utilized, so that mechanical mismatch caused by a layering phenomenon between the conductive material and the substrate is eliminated, and the interface stability is improved; and meanwhile, the interface adhesion between the conductive material and the substrate is improved by utilizing an interlocking structure between the sprayed conductive material and the uncured PDMS. The flexible piezoresistive sensor assembled by using the flexible conductive film has good cycling stability, and can monitor human body activities (such as elbow bending, human body gaits and the like) in real time.

The invention relates to the field of building films, and discloses film spraying composite equipment and a crossed composite film production process, and the film spraying composite equipment comprises the following steps: S1, carrying out surface pretreatment on a main film base material; s2, preparing a dynamic reaction adhesion promoting layer coating solution; s3, the surface of the main film base material is coated with the dynamic reaction adhesion promoting layer; s4, performing multi-layer compounding on the main film base material, the dynamic reaction adhesion promoting layer and the secondary film base material through extrusion co-extrusion equipment; s5, carrying out hot-pressing curing treatment on the compounded film; and S6, rolling to obtain a finished product. The technical scheme that the primary film substrate and the secondary film substrate are both subjected to corona treatment is adopted, polar groups such as carboxyl and hydroxyl are introduced to the surfaces of the substrates, the interface adhesion performance is remarkably improved, the effect of high peel strength of the multi-layer composite film is achieved, and the problems that the interface bonding strength is insufficient and the multi-layer film is prone to layering in the high-humidity and high-temperature environment are solved.

The invention discloses a quartz fiber surface modification method and application thereof. The modification method of the quartz fiber comprises the following steps: introducing a low-dielectric polyimide coating on the surface of the quartz fiber, wherein the coating consists of high-heat-resistance non-melting and insoluble polyimide; and nano silicon dioxide microspheres with hollow mesoporous structures are introduced to form a rough surface in the polyimide coating, so that the chemical polarity and roughness of the surface of the quartz carbon fiber are jointly improved. According to the method, on the basis that the dielectric property of the quartz fiber is not reduced, the CTE mismatching between the quartz fiber and the resin is remarkably improved, the interface adhesion strength after cold and hot cycling is improved, the excellent dielectric property of the quartz fiber and the high heat resistance of the polyimide resin are fully played, and the method is suitable for continuous and large-scale production and has wide application prospects. And particularly, the composite material can meet the strict requirements of the modern aerospace industry on light weight, high strength, low dielectric, low water absorption and thermal cycling impact resistance of the composite material.

The invention provides a green and environment-friendly high-performance bamboo-plastic composite material and a preparation method and application thereof.The green and environment-friendly high-performance bamboo-plastic composite material is prepared from long-chain-chain PBS, modified calcium carbonate, bamboo powder and fluorine-containing auxiliaries, KH-570 is loaded on the surface of ground calcium carbonate, then the bamboo powder and the fluorine-containing auxiliaries are added in sequence, surface modification is conducted on the bamboo powder through impact force and friction force, and the bamboo-plastic composite material is obtained. Mixing the obtained modified bamboo powder / calcium carbonate with long-chain branch PBS in a double-screw extruder; according to the scheme, better interface cohesiveness is provided for the composite material by introducing the long-chain branch PBS, and entanglement among PBS molecular chains is increased by the long-chain branch structure, so that the matrix material has higher melt strength and better fluidity in a molten state; the bamboo powder and the calcium carbonate are subjected to surface modification treatment, more polar groups or functional groups with good compatibility with a PBS matrix are introduced, the modified bamboo powder / calcium carbonate is obtained, and the mechanical property, the thermal property, the interfacial compatibility and the crystallization property of the composite material are overall improved. The tensile strength of the obtained product is 13.61 MPa, and the elongation at break is 53%.

The invention discloses a full-water-blocking cable and a preparation method thereof, and relates to the technical field of high-voltage electrical engineering. The full-water-blocking cable comprises a waterproof structure cable core and an insulating layer, the waterproof structure cable core is wrapped by the insulating layer, the waterproof structure cable core is composed of an aluminum single-wire conductor located in the center and a plurality of outer-layer aluminum single-wire conductors arranged annularly, a wrapping layer is arranged outside the center aluminum single-wire conductor, a filling layer is arranged between the outer-layer aluminum single-wire conductors, and the outer-layer aluminum single-wire conductors are wrapped by the wrapping layer. The coating layer and the filling layer are made of semi-conductive water-blocking materials, and the outer-layer aluminum single-wire conductors are annularly arranged around the central aluminum single-wire conductor by at least one circle. The invention further provides a preparation method of the full-water-blocking cable. The full-water-blocking cable provided by the invention has excellent waterproof performance and interface adhesion performance, the quality of a finished product is high, the stability is good, and the problems that the bonding strength between an existing semi-conductive water-blocking material and an aluminum wire is low, the cohesiveness and flowability of a water-blocking filler are poor, the quality of a finished cable is low, and longitudinal water leakage of the water-blocking cable is serious are effectively solved.

The invention discloses a double-layer composite structure cable sheath and a preparation method thereof, and belongs to the technical field of cable sheath materials. The invention relates to a preparation method of a cable sheath with a double-layer composite structure. The preparation method comprises the following steps: uniformly mixing polyvinyl chloride, an organic ester compatilizer and a metal salt stabilizer to obtain a PVC mixture; caprolactam is subjected to ring opening treatment and then subjected to copolymerization with adipic acid and polyether amine, and modified nylon 6 is obtained; uniformly mixing the modified nylon 6, an aliphatic diester lubricant and an amine stabilizer to obtain a nylon mixture; the cable core passes through a co-extrusion die head, the PVC mixture and the nylon mixture wrap the cable core from inside to outside in a melt co-extrusion mode, and after shaping, the cable sheath of the double-layer composite structure is obtained. The problems of layering, bubbles, poor interface bonding force and the like in combined processing of the nylon layer and the PVC layer are solved. And the obtained cable sheath has high toughness, bending resistance and fluidity.

An adhesion measuring device measures an interfacial adhesion between an electrode and a separator, and a method for measuring adhesion using the same, has the advantage of measuring an interfacial adhesion between an electrode and a separator impregnated with an electrolyte that simulates a condition equivalent to a condition in an actual secondary battery, thereby predicting the adhesion of the electrode and the separator in the actual secondary battery and preventing folding of the separator, etc.

The invention relates to the technical field of bio-based formaldehyde-free adhesives, and aims to provide a preparation method and application of a high-strength and high-toughness bio-based adhesive. Through interface molecular structure design, a boron nitride nanosheet based on sulfydryl click chemical function modification is constructed, an interface mechanical interlocking and chemical multi-network cross-linking reinforcing and toughening integrated technology is innovated, and the preparation method of the boron nitride nanosheet intercalation modified reinforcing and toughening plant protein adhesive is provided. The characteristic of poor interfacial adhesion between the adhesive and the wood surface is obviously improved, and the bio-based adhesive with good water resistance, high strength, excellent toughness and wider application range is obtained. According to the present invention, the dry shear strength of the plywood prepared by using the high-performance, high-strength and high-toughness bio-based adhesive through hot pressing can achieve 2.56 MPa, the wet shear strength can achieve 1.32 MPa, the wet debonding work can achieve 1800 mJ, excellent strength and excellent toughness can be represented, the thermal stability and the fire resistance of the adhesive can be significantly enhanced, and the wide industrial application prospect can be provided.

This invention relates to the field of waterproof coating technology, and more particularly to a rare earth tailings-modified emulsified asphalt grouting material and its application. The asphalt grouting material comprises a modified emulsified asphalt composition, which includes asphalt and modifying components; the modifying components include SBR emulsion, rare earth tailings, and a coupling agent; by weight, the asphalt is 300-1200 parts, the SBR emulsion is 75-250 parts, and the rare earth tailings are 3-24 parts. This invention uses rare earth tailings to modify the emulsified asphalt, resulting in modified emulsified asphalt that can better deposit on the interface during the demulsification stage, exhibiting higher interfacial adhesion and water resistance. This has significant application value in the field of emulsified asphalt grouting materials.

The invention discloses a nano ceramic anti-corrosion heat-dissipation coating, and belongs to the technical field of coatings. Comprising a paint component A and a curing agent component B, wherein the paint component A comprises the following raw materials in parts by weight: 40-60 parts of modified epoxy resin, 15-20 parts of modified ceramic powder, 35-55 parts of a solvent, 0.6-1.2 parts of a dispersing agent, 0.3-0.6 part of a defoaming agent and 0.2-0.4 part of a flatting agent. According to the coating prepared by the invention, four ceramic fillers are introduced, so that the heat dissipation performance and the corrosion resistance of the coating can be remarkably improved; ceramic powder is subjected to surface modification through a silane coupling agent, so that the dispersity and interface bonding force of filler in a resin matrix are improved, and the overall performance is improved; the epoxy resin is modified, so that the corrosion resistance and heat resistance of the coating are further improved; in conclusion, the anti-corrosion heat dissipation coating successfully integrates the anti-corrosion function and the heat dissipation function, and the problem that the anti-corrosion performance and the heat dissipation performance of a traditional coating are difficult to consider at the same time is solved.

The application discloses an anti-corrosion self-repairing super-amphiphobic coating film and a preparation method thereof, and belongs to the technical field of high polymer coating materials. The coating film is sequentially composed of a nanoparticle skeleton layer, a dynamic borate ester bond layer and a super-amphiphobic functional layer. The three-layer gradient design cooperatively realizes micro / nano structure stability, self-repairing and super-amphiphobic functions. The skeleton layer takes SiO2-TiO2 composite nanoparticles as a substrate to provide support. The dynamic borate ester bond layer forms a dynamic network through organic boron compound polycondensation, and is endowed with self-repairing capability and enhanced interface combination. The super-amphiphobic functional layer is formed by grafting fluorine-containing organosilicon compounds, and has hydrophobic and oleophobic properties. The multilevel structure is constructed in steps, the reaction condition is mild, the operation is simple, the cost is low, and the method is suitable for large-scale industrial preparation. The coating film has excellent super-amphiphobic performance and interface adhesion performance, and the super-amphiphobic performance of the coating film can still be kept stable in long-term use or complex environment, and the problem that existing super-amphiphobic materials are prone to damage is effectively solved.

This invention belongs to the field of flame retardant technology, specifically relating to a coated boron nitride and its preparation method and application, and a biodegradable flame-retardant composite material and its preparation method and application. This invention employs a multi-level structure regulation approach, utilizing silane coupling agents and chemical bonding for surface coating modification, effectively alleviating stress concentration. Furthermore, regular polyhedral flame-retardant units are constructed on the coated and modified two-dimensional boron nitride surface, building a three-dimensional flame-retardant network. Through phytic acid molecular bridging, an inorganic-organic interface transition layer is formed, significantly improving the interfacial adhesion strength between the functional phase and the matrix resin. This invention constructs a flame-retardant structural system based on molecular configuration optimization, optimizing the interfacial compatibility between the functional phase and the biodegradable matrix resin. It utilizes a bio-based phosphorus-nitrogen synergistic flame-retardant system combined with a two-dimensional boron nitride structure for composite design, constructing a flame-retardant network system with both high-efficiency flame-retardant properties and excellent performance.

This invention discloses a method for combining CNC high-precision high-temperature resistant insulating substrate engraving with tin-copper alloy printed circuit 3D printing, belonging to the field of high-power circuit carrier manufacturing technology. The invention uses 99.7% alumina ceramic or silicon nitride ceramic as the insulating substrate, achieving high-precision structural forming of ±0.005-0.025mm through CNC layer engraving. Sandblasting, roughening, sensitization, activation, and pre-plating surface modification enhance interfacial adhesion. CuSn10 tin bronze is used as the printing material, and the circuit is formed by SLM or FDM 3D printing at a sintering temperature of 850-900℃, achieving a forming density ≥98.71%. Through stepped heating sintering and high-temperature resistant inorganic adhesive curing, the ceramic substrate and tin-copper alloy circuit are integrated. The circuit carrier obtained by this invention has a long-term temperature resistance of ≥1600℃, a volume resistivity of ≥10¹⁴Ω·cm, a current carrying capacity of 15.6A for 3mm lines, and an adhesion strength retention rate of ≥95% after 1000 thermal cycles. The temperature rise is 15~20℃ lower than that of traditional PCBs. It is suitable for high-load, high-current scenarios such as industrial power supplies and new energy power control. It is compatible with processes and has complete industrial support, and has significant technical and economic feasibility.

The present invention relates to an electrode assembly, a secondary battery including the electrode assembly, and a method of manufacturing the electrode assembly, wherein a corona surface treatment is applied to a portion of a surface of a separator located inside a unit cell to increase interfacial adhesion between the separator and an electrode without decreasing electrolyte impregnability.

The invention relates to an LSPC foamed sheet and a preparation method thereof, and belongs to the technical field of foamed materials. In order to solve the problems that an existing foamed stone-plastic plate is uneven in foam hole, insufficient in strength and prone to local collapse, a novel foam regulator is introduced into a PVC-based foaming system. According to the regulator, through hydrosilylation, ring opening and silane coupling reaction, a polysiloxane-alkyl ester functional structure is grafted on the surface of nano silicon dioxide, bubbles are induced to be uniformly nucleated by utilizing low surface tension of the functional structure, and bubbles are inhibited to be aggregated through an interface adhesion energy barrier, so that a uniform and fine closed-pore structure is formed. The density of the obtained LSPC board is reduced, and the LSPC board has excellent mechanical strength and high-temperature collapse resistance and is suitable for bearing, floor heating and other scenes.

The invention relates to the technical field of thin film preparation, in particular to a system and method for enhancing thin film interface adhesion, the system comprises a laser scanning heating device, a vacuum chamber, an arc discharge device and a sample fixing support, the laser scanning heating device is arranged outside the vacuum chamber, and the arc discharge device is arranged outside the vacuum chamber; the sample fixing support is arranged in the vacuum chamber, and a film sample to be deposited is arranged on the sample fixing support; laser emitted by the laser scanning heating device enters the vacuum chamber through the laser window and irradiates a to-be-deposited film sample on the sample fixing bracket; and the arc discharge device is arranged in the vacuum chamber, is positioned between the laser window and the sample fixing bracket, and comprises an anode and a cathode. According to the method, through the mode that the metal carbide transition layer is formed in the critical molten state through rapid laser scanning, the structure mismatch at the interface is improved, and the interface adhesive force of the prepared ta-C thin film is enhanced.