280 results about "Interfacial adhesion" patented technology

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 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 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 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 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.

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.

This invention relates to a highly adhesive pavement crack repair material, its preparation method, and its application. It comprises the following raw materials in parts by weight: 1-5 parts adhesive, 70-100 parts base asphalt, 3-7 parts copolymer modifier, 1.5-3 parts cationic emulsifier, 1-3 parts functional water-reducing agent, 1-2 parts defoamer, 2-5 parts pH adjuster, 80-94 parts water, 90-110 parts cement, 70-110 parts sand, 10-20 parts functional filler, and 0.01-0.06 parts expanding agent. This invention first modifies the base asphalt with a copolymer modifier, then combines it with a cationic emulsifier and adhesive to prepare a reactive, highly adhesive pavement crack repair material. After complete curing, this repair material forms a polymer cross-linked network, exhibiting weak relaxation behavior. The flexibility of the cross-linked network and its high adhesion to the crack wall endow the reactive repair material with superior anti-interlocking performance and low-temperature tensile properties, effectively solving the problems of insufficient interfacial adhesion and easy cracking in traditional pavement repair materials.

The invention discloses a composite plugging material for a high-temperature-resistant fracture stratum and an implementation method of the composite plugging material. The composite plugging material is prepared from a base material, a flexibilizer, a high-temperature stabilizer, a plugging agent, a curing accelerator and an interface enhancer, the implementation of the composite leaking stoppage material is completed through four stages of single agent preparation, leaking stoppage slurry preparation, stratum injection and curing packing. The composite leaking stoppage material disclosed by the invention can keep a stable structure at a high temperature of 150-220 DEG C, and has excellent leaking stoppage sealing property, interface cohesiveness and toughness; the preparation process of each single agent for forming the composite plugging material is mature, special equipment is not needed, and industrial mass production can be realized; the field application process is compatible with existing drilling equipment, operation is easy, the construction period is short, and the drilling cost is reduced.

The present invention discloses a coupled ion beam preparation device and method for an antigen-antigen oxygen polymer composite film. The device comprises a winding and unwinding system, a Hall ion source etching system, a MEVVA ion implantation system, a magnetically filtered cathode vacuum arc deposition system, and a high-power pulsed magnetron sputtering deposition system. The systems are connected via oxygen-free copper O-rings. The polymer film substrate is transported within the device, and the prepared composite film layer structure is shown in Figure 1. The composite film prepared using this technology exhibits excellent interfacial adhesion strength and film-substrate cooperative deformation capability, effectively alleviating AO erosion and degradation induced by cracking of the protective film caused by space debris collisions and thermal cycling, significantly improving the service life of polymer components.

This invention relates to the field of porous carbon materials technology, and discloses a method for preparing phenolic resin-based porous carbon based on the synergistic activation of water vapor and carbon dioxide. The focus of this invention is on constructing a "ZIF-8@Ni-MOF derived bifunctional material with pore formation – nitrogen / nickel co-doping + dynamic pressure – dual-gas synergistic etching + Ti3C2T" process. x The "MXene gradient modification" multi-dimensional process utilizes MOF-derived materials to provide well-defined initial pores and active sites. Combined with complementary dual-gas properties and dynamic pressure control, precise customization of pore sizes from 0.7 to 50 nm is achieved. MXene modification simultaneously enhances conductivity and interfacial adhesion. The resulting material exhibits superior performance, with a microporosity ≥88% and a specific surface area ≥2200 m². 2 / g, total pore volume ≥1.3cm³ 3 / g, the process produces no chemical waste pollution. When applied to silicon-carbon anodes in lithium batteries, it maintains a capacity retention rate of ≥85% after 500 cycles, demonstrating high industrialization value.

The application relates to an engine wire harness with good shielding performance and a preparation method thereof, and belongs to the technical field of new energy vehicles; a compatilizer is prepared, the compatilizer is a polyphenyl ether-polyethylene graft copolymer, the polyphenyl ether chain segment in the molecular structure is compatible with polyphenyl ether, and the polyethylene chain segment is compatible with high-density polyethylene; the structure can significantly reduce the interfacial tension between the polyphenyl ether / high-density polyethylene two phases, greatly enhance the interfacial adhesion, effectively inhibit phase separation and interfacial peeling, effectively improve the mechanical properties of the material, in addition, the compatilizer does not need to introduce a new resin component, potential influences of external components on the properties of the matrix are avoided, and the inherent properties of the polyphenyl ether and high-density polyethylene matrix resins can be better reserved.

Provided is a system for predicting compatibility between different kinds of resin materials, the method being capable of predicting compatibility such as mutual solubility and interfacial adhesion between constituent materials in a blend material prepared by mixing a plurality of resin materials. The system is characterized by comprising: a three-dimensional molecular model creation unit that creates a three-dimensional molecular model of each of a plurality of resin materials using, as input information, information obtained by digitizing the chemical structures of the resin materials; a molecular entanglement model creation unit that, using the three-dimensional molecular model, temperature, and pressure as input information, creates a molecular entanglement model of different kinds of resin materials in which two kinds of the three-dimensional molecular models of each of the resin materials are combined; a mutual diffusion coefficient calculation unit that executes a molecular simulation on the basis of the molecular entanglement model and calculates a mutual diffusion coefficient between the different kinds of resin materials; a fracture energy calculation unit that performs a molecular simulation on the basis of the molecular entanglement model and calculates a fracture energy; a trajectory saving unit in which the time evolution of the coordinates of the molecular entanglement model in the process of calculating the fracture energy is saved; and a simulation result output unit that outputs the mutual diffusion coefficient and the fracture energy as numerical information and outputs the time evolution of the coordinates as a moving image.

The invention discloses low-carbon polypropylene fiber concrete with high toughness and crack resistance, and belongs to the field of concrete. The raw materials comprise, by mass, 100-110 parts of coarse aggregate, 60-70 parts of fine aggregate, 20-30 parts of cement, 80-120 parts of fly ash, 15-20 parts of modified polypropylene fiber, and 2-3 parts of a water reducing agent; the use amount of the water meets the condition that the water-cement ratio is 0.3-0.4; according to the method, the surface of the polypropylene fiber is subjected to controllable micro-etching through concentrated phosphoric acid, a microscopic gully and micropore structure is formed, effective roughening of the surface of the fiber is achieved, the specific surface area of the fiber is greatly increased, the fiber can generate a stronger mechanical meshing effect in concrete, pulling out of the fiber is effectively prevented, and the tensile strength of the fiber is improved. And in the subsequent silane coupling agent treatment, a stable'molecular bridge 'is constructed between the fiber surface subjected to acid etching activation and an inorganic cement matrix, and firm Si-O-Si covalent bond connection is formed, so that the problem of weak bonding force between the common polypropylene fiber and the matrix interface is solved.

The application relates to the technical field of wire and cable materials, in particular to a high-strength and high-wear-resistance cable and a preparation method thereof, which comprises the following components: 51-63 parts by weight of polyvinyl chloride, 12-17 parts by weight of reinforcing particles, 6-10 parts by weight of glass fibers, 7-9 parts by weight of polytetrafluoroethylene micro powder, 2-4 parts by weight of barium titanate, 3-7 parts by weight of nano silicon dioxide, 11-14 parts by weight of magnesium hydroxide, 4-7 parts by weight of bis-[3-(triethoxysilane) propyl] tetrasulfide, 8-14 parts by weight of plasticizer, 0.6-1.2 parts by weight of dibutyl tin maleate, and 3-5 parts by weight of 2-(2'-hydroxy-3',5'-di-tert-butyl phenyl)-5-chlorobenzotriazole; wherein the reinforcing particles are obtained by modifying lanthanum sulfide, a boron source and polyethylene grafted maleic anhydride; the lanthanum sulfide is modified by using boron elements and polyethylene grafted maleic anhydride, the lanthanum sulfide is non-metallic doped by using the boron source, so that the crystal lattice structure of the lanthanum sulfide is changed, the polyethylene grafted maleic anhydride is used as a compatibilizer, the interfacial adhesion is improved, and the strength and wear resistance of the cable are improved.

This invention provides a highly adhesive, wide-temperature-range aqueous hydrogel electrolyte for zinc-ion batteries, its preparation method, and its applications. The method includes the following steps: dissolving sodium alginate in 2-morpholine ethanesulfonic acid buffer solution, adding EDC and NHS, and activating; then adding dopamine hydrochloride, undergoing an amidation reaction, dialysis purification, and freeze-drying to obtain SA-DA powder; adding gelatin and SA-DA powder to deionized water, stirring and mixing evenly, and allowing to stand; then immersing in the electrolyte and undergoing soaking treatment to obtain the final product. The electrolyte of this invention exhibits excellent interfacial adhesion and flexible mechanical properties, significantly improved electrochemical stability and cycle life, excellent wide-temperature-range adaptability and anti-drying ability, outstanding safety and biocompatibility, and a simple and highly controllable process, providing key technical support for the development of high-performance, high-safety flexible aqueous zinc-ion batteries.

The preparation method comprises the following steps: S1, under the protection of nitrogen, mixing hexaethylcyclotrisiloxane, octamethylcyclotetrasiloxane, dimethyl dialkoxy silane and an acid catalyst, reacting, adding a weakly alkaline substance to terminate the reaction, and filtering to obtain an oligomer A; s2, adding alkoxy silane into the oligomer A, uniformly mixing, and adding a boric acid compound into the mixture for condensation reaction to obtain a polysiloxane oligomer; s3, the polysiloxane oligomer is dissolved in an organic solvent, and the low-temperature flexible primer is obtained. According to the invention, the polysiloxane oligomer containing the diethylsiloxy chain link, the siloxy group, the boron element and the like at the same time is prepared, and the interface bonding strength of the silicone rubber is improved and the low-temperature flexibility function is realized by utilizing the empty orbital effect of boron atoms, the low-temperature characteristic of the diethylsiloxy chain link and the hydrolysis reaction effect of the siloxy group. The preparation method has the advantages of cheap and easily available raw materials and mild reaction conditions.

This invention relates to the field of polyester cord technology, specifically to a high-strength, high-stability polyester cord and its preparation method. The invention involves the following steps: high-viscosity polyester chips are subjected to screw melt spinning, air cooling and shaping, initial application of spinning oil, hot stretching, heat setting, relaxation heat treatment, impregnation with an activator, and winding to obtain pre-activated polyester fibers. The pre-activated polyester fibers are then heat-treated and stored to obtain modified polyester fibers. These modified polyester fibers are then doubling, twisting, and heat-set to obtain polyester strands. The polyester strands are then twisted using a twisting machine to obtain twisted cords. The twisted cords are immersed in a first adhesive solution for a first impregnation treatment, and then immersed in a second adhesive solution for a second impregnation treatment. After drying and heat treatment, the polyester cord is obtained. The polyester cord prepared by this invention not only possesses excellent mechanical properties but also excellent interfacial adhesion, enabling effective bonding with a rubber matrix.

This invention relates to the field of photovoltaic encapsulant film technology, and discloses a thermally conductive and insulating photovoltaic encapsulant film, its preparation method, and its application. The film is an integrated structure formed by double-layer co-extrusion, comprising upper and lower functional layers (each including 100 parts of matrix resin, 5-25 parts of BN@SiO2 core-shell composite filler, and 1.5-8 parts of functional microcapsules); the BN@SiO2 core-shell composite filler includes a BN@SiO2 core-shell structure with h-BN as the core and amorphous SiO2 as the shell, and a gradient interface layer grafted onto its outer surface (which, from the inside out, includes an anchoring layer covalently bonded to the SiO2 shell, a flexible stress-buffering crosslinking layer, and a hydrophobic outer layer); the fillers in the upper and lower functional layers have different orientations. The thermal conductivity of this film exceeds 1.0 W / (m·K), reducing the operating temperature of photovoltaic modules by nearly 20°C, and the volume resistivity after deflection exceeds 10¹. 5 It has a strength of Ω·cm and also possesses excellent resistance to PID, high-voltage insulation, and interfacial adhesion.

The present application relates to the technical field of wet shotcrete, and discloses a construction method for enhancing the adhesion of wet shotcrete and a tunnel rock wall interface, comprising the following steps: step one, construction preparation; step two, vibration impurity removal and dust absorption; step three, high-pressure air gun cleaning and dust removal; step four, high-pressure water flushing and rough surface formation; step five, wet shotcrete layer-by-layer spraying; and step six, curing. The present application completely removes impurities in the rock wall surface and gaps through integrated pretreatment of vibration impurity removal, hierarchical cleaning and concentrated water beam roughening, forms a uniform rough interface, significantly improves the interface adhesion of wet shotcrete and the rock wall, solves the problems of easy hollowing and peeling in the prior art, and guarantees the safety and durability of initial tunnel support.