321 results about "Interface bond" patented technology

The invention provides a method for enhancing interface bonding and corrosion resistance of a basalt fiber composite material, and belongs to the field of fiber surface modification chemical methods. The method is realized through the following steps: firstly, treating basalt fibers by utilizing an organic solvent through high-temperature reflux to prepare desized basalt fibers; then, the desized basalt fibers are immersed in a dopamine solution to be subjected to auto-polymerization, and basalt fibers with a polydopamine coating are prepared; sequentially immersing the basalt fiber coated with the polydopamine into a zinc salt solution and a 2-methylimidazole solution, so as to prepare a ZIF-8 modified basalt fiber; and finally, mixing the ZIF-8 modified basalt fiber with resin through electrostatic coating, and molding by adopting a segmented hot-pressing method to obtain the basalt fiber composite material. According to the method, a composite structure formed by the synergistic effect of a dopamine self-polymerization layer and ZIF-8 is introduced into the surface of the basalt fiber, so that the interface bonding force between the fiber and resin and the corrosion resistance of the composite material are greatly enhanced.

The invention discloses a preparation method of a heterogeneous-heterogeneous double structure of a high-strength copper / steel composite board, which comprises the following steps: realizing metallurgical bonding between copper and steel heterogeneous metals through the synergistic effect of a laser energy field and a rolling force, and promoting formation of a martensite structure near a composite interface; then, the surface of the steel side is subjected to online heat treatment through a flat-topped laser beam, and the purposes that the outer surface layer structure of the steel side is completely converted into martensite, the martensite structure at a bonding interface is converted into tempered sorbite, the residual stress of the copper side is reduced, and a heterogeneous structure with the grain size in gradient distribution is formed on the copper side are synchronously achieved; the tensile strength, the interface bonding strength and the toughness of the copper-steel composite plate are synergistically improved.

The invention belongs to the technical field of material preparation, and aims to solve the problems of interface separation and weak oxidation resistance under complex working conditions caused by insufficient interface bonding force of the existing carbon / carbon composite material. In order to achieve the purpose, the invention provides a carbon / carbon composite material and a preparation method thereof. The carbon / carbon composite material comprises the following components in percentage by mass: 40%-55% of polyacrylonitrile-based carbon fibers, 10%-25% of pitch-based carbon fibers, 8%-20% of nano silicon dioxide grafted carbon fibers, 8%-20% of biological pitch, 8%-15% of nano graphene modified phenolic resin, 3%-6% of silicon carbide whiskers, 2%-4% of zirconium boride nanoparticles, 2%-4% of graphitized carbon fibers and 1%-3% of a natural plant extract antioxidant. The carbon / carbon composite material provided by the invention can provide stable interface bonding force and remarkable oxidation resistance, so that the structural integrity and mechanical property stability of the material when bearing various complex stresses such as stretching, compression, bending, shearing and the like are guaranteed, and the application range of the material in the field of high-temperature oxidation resistance is widened.

The invention discloses high-strength corrosion-resistant pervious concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete is prepared from the following raw materials in parts by weight: 200-300 parts of cement, 1000-1300 parts of coarse aggregate, 20-30 parts of a composite admixture, 10-20 parts of a reinforcing agent, 1-1.5 parts of a water reducing agent, 3-5 parts of an additive and 100-130 parts of water, the reinforcing agent is prepared from modified basalt fiber and styrene-acrylic emulsion according to the mass ratio of (8 to 10): 1; the additive is a SiO2 (at) PDA (at) zeolite composite material; the composite admixture is composed of fly ash and modified steel slag powder according to a mass ratio of 2: 1. According to the invention, by optimizing the proportion of a plurality of composite materials, the interface bonding property with a gel material matrix is improved, the mechanical property and durability are remarkably improved while the water permeability is maintained, and the corrosion resistance of the concrete matrix is enhanced.

The invention provides a method for improving the interface bonding performance of a carbon fiber reinforced epoxy resin-based composite material, and belongs to the technical field of carbon fiber surface modification. The preparation method of the modified carbon fiber comprises the following steps: carrying out plasma treatment on carbon fiber by using air as a plasma gas medium to obtain plasma surface modified carbon fiber; the plasma surface modified carbon fiber is soaked in a polyamide-amine dendrimer (PAMAM) solution for a reaction, and the modified carbon fiber is obtained. The modified carbon fiber is prepared through a method of combining plasma treatment and surface grafting treatment, so that the interface bonding strength of the carbon fiber reinforced epoxy resin-based composite material is improved, and meanwhile, the original tensile property of the carbon fiber can be kept stable.

The invention discloses a preparation method of an interface self-reaction strong chemical bonding radiant heat protection multilayer gradient coating, and belongs to the technical field of coating surface modification. The invention aims to solve the problems that the existing coating is high in preparation temperature, long in period, high in cost and not suitable for industrial batch production, the interface bonding between the coating and a nickel-based high-temperature alloy matrix is poor, the coating is easy to crack and even lose efficacy due to mismatching of thermal expansion under high-temperature service, and the thermal protection performance of the traditional coating is insufficient. The interface self-reaction strong-chemical-bonding radiant heat protection multilayer gradient coating and a nickel-based high-temperature substrate are subjected to self-reaction at the interface to form strong chemical bonding, the bonding strength of the coating reaches 15 MPa or above, the emissivity value of the coating reaches up to 0.9, the structure of the coating is kept complete and does not fall off after the coating is oxidized in 1250 DEG C high-temperature static air for 30 h, and the coating has the advantages of being simple in preparation process, low in cost and the like. The method has application potential in a nickel-based high-temperature alloy anti-oxidation radiation thermal protection multifunctional integrated metal thermal protection system for a high-speed aircraft.

The invention discloses an epoxy resin tack coat oil material suitable for a steel bridge deck, which constructs a multi-scale toughening composite system through the synergistic effect of an epoxy-terminated polyurethane elastomer toughening agent (molecular-scale chemical grafting) and a nano-scale elastomer filler (nano dispersion toughening), and solves the problem of rigidity-flexibility imbalance of the traditional epoxy tack coat oil. The material has the advantages of fast curing (surface drying at 25 DEG C is less than or equal to 4 hours), high toughness (the elongation at break is greater than or equal to 250%) and excellent weather resistance (the performance retention rate is greater than or equal to 85% after ultraviolet aging for 500 hours), and is suitable for interlayer interface bonding of steel bridge deck pit slot and crack repair. According to the preparation method, uniform dispersion and interface chemical bonding of the nanofiller are achieved through a segmented stirring process, the comprehensive performance of the material is remarkably improved, and the important engineering application value is achieved.

The invention discloses a special aggregate for high-strength UHPC (Ultra High Performance Concrete) as well as a preparation method and application thereof, and relates to the technical field of nano modification. According to the aggregate, high-strength basalt or quartz sand is used as a matrix, continuous graded particles are formed through a multi-stage crushing process, and the particle morphology and size distribution are optimized. The surface of the UHPC aggregate is modified by adopting a nano composite system, and the interface bonding performance of the aggregate and a UHPC matrix is remarkably improved by forming a gradient nano composite coating. And technological parameters are optimized, so that the uniformity and the performance stability of the coating are ensured. The aggregate can significantly improve the compressive strength, breaking strength and durability of UHPC. In the prefabricated bridge wet joint, the aggregate shows excellent construction performance and rapid maintenance characteristics, and can effectively shorten the construction period and prolong the service life of the structure. According to the invention, a high-performance special aggregate is provided for UHPC through a nano modification technology, and the development of ultra-high performance concrete in engineering application is promoted.

The invention relates to the technical field of lamps, in particular to a plating forming process of a lamp. The problems that the interface bonding force of the coating and the matrix is insufficient and the corrosion resistance of the coating is poor are solved. According to the method, micro-arc oxidation is carried out in the pretreatment stage, a compact Al-Si-O ceramic layer is generated on the surface of a high-aluminum matrix in situ, and in combination with deep diffusion of plasma siliconizing, a transition area with gradient Si distribution is constructed; the pitting corrosion resistance of the coating is optimized through the component gradient design of the inner-layer coating, the middle-layer coating and the outer-layer coating; the surface of the coating lamp is subjected to checkerboard scanning by using short pulse laser, so that the porosity and microdefects of the surface of the coating are improved, and the corrosion resistance of the coating is enhanced; a uniform oxynitride passivation film is generated on the surface of the coating in situ through low-temperature plasma post-oxidation-nitridation treatment, the defect that a film layer is easy to strip in a traditional passivation process is avoided, and the corrosion resistance of the material in long-term service can be stably maintained.

The invention discloses a high-resilience eTPU foaming material and a preparation process thereof, and belongs to the technical field of foaming materials. The process comprises the steps of raw material premixing and TPU chain extension reaction, precursor system injection, in-situ phase change energy storage core-shell particle generation, supercritical two-fluid foaming and molding post-treatment. Wherein the SiO2-coated TiO2 core-shell particles are prepared by a non-hydrolytic sol-gel method, the porous SiO2 core adsorbs and fixes the micro-crosslinked polyurethane-based phase change material, the TiO2 shell provides sealing and supporting, the particles are combined with the TPU matrix through covalent bonds, and the micro-crosslinked polyurethane-based phase change material has a unique micro-crosslinked network structure, so that the thermal conductivity of the TPU matrix is improved, and the thermal conductivity of the TPU matrix is improved. The hidden danger of leakage of the phase change material in the using process can be effectively eliminated, and meanwhile the interface bonding effect between the inorganic particles and the TPU matrix is synchronously enhanced. The eTPU foaming material prepared by the invention has the characteristics of high resilience, strong interface bonding, excellent energy storage stability and low compression set, and is suitable for shoe materials, automotive interiors and other scenes.

The invention provides a titanium steel composite plate welding interface bonding force detection method, and relates to the technical field of quality detection.The method comprises the steps that scanning is conducted from the steel substrate side of a composite plate through a single crystal normal probe, and whether an interface has a disconnection area or not is judged by analyzing the amplitude relation between interface echoes and bottom surface echoes; defining a 180-degree arc-shaped scanning path taking the explosive welding direction as a 0-degree reference axis on the surface of the composite board which is judged to be completely combined, and equally dividing the arc-shaped path into four monitoring arc sections; in each monitoring arc section, a water immersion type ultrasonic detection device is adopted, a probe is focused on the steel-titanium bonding interface, scanning is carried out along an arc-shaped scanning path, and interface ripple C scanning imaging pictures of the four monitoring arc sections are obtained respectively. According to the method, through ultrasonic detection and analysis, precise detection of the welding interface of the titanium-steel composite plate from disconnection area screening to bonding strength evaluation is achieved, interface defects can be effectively recognized, and the welding quality reliability is improved.

The invention relates to a high-temperature-resistant polymer binder and a preparation method thereof. The binder is composed of a mixture of resin containing a siloxane unit polyimide main chain and an epoxy group side chain and tannic acid. Wherein the main chain containing siloxane and imide units endows the adhesive with excellent heat-resistant stability, excellent processability and excellent adhesion with glass and ceramic materials, and the adhesive can be cured at room temperature through the epoxy side group; the mixed tannic acid can form strong interface bonding with a polymer film and a metal material through a multiple hydrogen bond network, so that the tannic acid has important application prospects in the fields of semiconductor packaging, thermal interface materials and the like.

The invention discloses a titanium alloy material cutting tool and a machining method, and the machining method comprises the following steps: proportioning a hard phase WC, a binding phase and an additive according to a ratio, carrying out ball milling, spray drying and compression molding to obtain a tool blank, carrying out segmented sintering treatment, machining and molding to obtain the cutting tool, and then carrying out heat treatment to obtain the titanium alloy material cutting tool. Sequentially carrying out electromagnetic coupling strengthening treatment and surface coating plating treatment to form a TiN layer, a CrAlN layer, a CrAlSiN layer and a CrAlBN layer; the titanium-based alloy powder is added into the binding phase, so that the high-temperature strength, the heat resistance and the lightweight characteristic of the cutting tool can be enhanced; the modified CeO2 can improve the microstructure uniformity, the interface bonding force and the oxidation resistance of the cutter, so that the density and the crack resistance are improved; electromagnetic coupling strengthening treatment and multi-layer coating deposition treatment are carried out on the cutting tool, the hardness, wear resistance, oxidation resistance and high temperature resistance of the surface of the tool can be remarkably improved, and meanwhile coating stripping is effectively prevented.

The invention discloses a titanium carbonitride-based metal ceramic alloy with a micro-nano bicrystal plate-shaped structure and a preparation method of the titanium carbonitride-based metal ceramic alloy with the micro-nano bicrystal plate-shaped structure. Binding phase powder; a carbon-nitrogen balancing powder; the Fsss particle size of the first TiCN powder is larger than the Fsss particle size of the second TiCN powder. The interface bonding property of a hard phase and a binding phase is better, better impact toughness is achieved, TiC can effectively enhance the strength and hardness of CN of the formed binding phase-based composite material (TiM), the W element can achieve solid solution and strengthen the binding phase, the hardness of the material is improved, and the wear resistance of the material is improved; the balance carbon content can improve the hardness, strength and wear resistance of the steel, and the submicron second TiCN is used for refining grains, improving the toughness and increasing the hardness of hard particles, so that the toughness of the steel is remarkably improved, the work hardening capacity is improved, and the wear resistance of the steel is obviously improved.

The invention relates to the technical field of bridge load tests, and provides a bridge load test crack increment change observation method and system, and the method comprises the steps: collecting prestressing tendon circumferential strain distribution data and dual-wavelength strain response data; calculating an interface bonding stiffness change parameter; pre-stress modulation effect compensation and polar coordinate system conversion are carried out on the strain response data and the rigidity change parameters, and micro-crack characteristic signals are obtained; load data and beam group arrangement parameters are collected, and a micro-crack propagation prediction model is established in combination with the interface bonding stiffness change parameters; inputting the micro-crack characteristic signal into a micro-crack propagation prediction model, and outputting a micro-crack development trend prediction result; and adjusting sampling parameters of a dual-wavelength time division multiplexing algorithm and characteristic extraction parameters of prestress modulation effect compensation according to a micro-crack development trend prediction result. According to the invention, the precision of observing the increment change of the micro-crack in the bridge load test is improved, and the automatic monitoring and prediction of the micro-crack of the prestressed concrete bridge are realized.

The invention relates to a motor outgoing line technology, and discloses a special material for a motor outgoing line. The polyimide composite material is prepared from the following components in percentage by weight: 50 to 70 percent of polyimide matrix material, 5 to 12 percent of nano-scale low-dielectric-constant filler, 10 to 20 percent of micron-scale reinforcing filler, 3 to 8 percent of conductive filler, 0.5 to 2 percent of interface regulating agent and 1 to 3 percent of processing aid. The invention also provides a preparation method of the special material for the motor outgoing line. The preparation method comprises the following steps: S1, carrying out surface modification on a nanoscale low-dielectric-constant filler and an interface regulating agent through solvent dispersion; by adopting the technical scheme of compounding the surface modified silicon dioxide nanoparticles and the polyimide matrix, the technical effects of reducing the dielectric constant and reducing the leakage current are achieved. By modifying the filler, the dispersity and interface bonding property of particles are improved, and the defects of high dielectric constant and large leakage current caused by interface polarization and uneven distribution of the filler in the prior art are overcome.

The invention provides a finite element simulation method for enhancing metal and composite material interface bonding performance through a micron protrusion structure, and relates to the field of metal and composite material interface toughening, and the method specifically comprises the steps that the micron protrusion structure is constructed on the metal surface, and different metal layers and adhesive film materials are selected to form a complementary structure; aBAQUS software is used for establishing an initial finite element model and a simplified single-row micron convex interface unit strip model; according to the method, under the same constraint and boundary conditions, single-lap tensile shear simulation is carried out, the interface energy density, the equivalent elastic modulus and the interface shear strength are calculated, and finally, the three performance indexes are fused to generate a comprehensive evaluation index so as to evaluate and optimize the interface bonding performance. According to the method, the mechanical locking effect and the interface bonding strength of the interface are improved by introducing the micron bulge structure, in addition, the calculation process is simplified by establishing the equivalent single-row micron bulge interface unit strip model, and the simulation efficiency and precision are improved.

The invention discloses an admixture for building formwork concrete, and belongs to the technical field of concrete materials. The admixture for the building formwork concrete, disclosed by the invention, comprises the following components in parts by weight: 65-70 parts of chitosan modified metakaolin; 10 to 15 parts of microencapsulated latex powder; 5 to 10 parts of calcium sulphoaluminate clinker; and 3-5 parts of modified polypropylene chopped fiber. Through reasonable proportioning of the components, the synergistic effect of the different components is brought into full play, and the invention aims to provide the additive for the building formwork concrete, which can significantly improve the thixotropic property, the interface bonding force and the crack resistance of the building formwork concrete and effectively prevent the corrosion of a steel formwork at the same time. The method is suitable for building formwork concrete engineering of a complex grid structure and has remarkable application value.

The invention provides a preparation method of a CoCrNi medium-entropy alloy / 316L stainless steel composite sheet, and belongs to the field of metal matrix composite material forming. The preparation method comprises the following steps: preparing the CoCrNi medium-entropy alloy / 316L stainless steel composite thick plate by adopting an explosive welding method; cutting a blank with good interface bonding from the composite thick plate; then multi-fire and multi-pass hot rolling is carried out; performing multi-pass cold rolling on the hot-rolled plate after annealing; and stress relief annealing is conducted after cold rolling, and the medium-entropy alloy / stainless steel composite sheet is obtained after air cooling. The CoCrNi medium-entropy alloy / 316L stainless steel composite sheet obtained by the method is uniform in thickness, flat and straight in joint surface, excellent in mechanical property, simple in production process and suitable for industrial production.

The invention relates to the technical field of metal material surface treatment, in particular to a method for improving the performance of a zirconium alloy Cr coating and a method for detecting the performance of the Cr coating, and the method for improving the performance of the zirconium alloy Cr coating comprises the steps that the surface of a zirconium alloy matrix is polished; the method comprises the following steps: cleaning a zirconium alloy matrix by using high-energy ions formed by evaporation and ionization of an arc discharge target material, depositing a base coat, and depositing a Cr coating on the zirconium alloy matrix by using a multi-arc ion plating technology; and carrying out high-temperature annealing heat treatment on the Cr coating. According to the method, the cracking resistance and the interface bonding performance of the Cr coating can be effectively improved. The method for detecting the performance of the Cr coating comprises the following steps: preparing a zirconium alloy matrix sample of the Cr coating which contains a base coat and is subjected to heat treatment; preparing a zirconium alloy matrix sample which does not contain a base coat and is not subjected to heat treatment of a Cr coating; preparing a zirconium alloy matrix sample containing a base coat and a Cr coating which is not subjected to heat treatment; and evaluating the toughness and cracking resistance of the Cr coating by comparing the initial strain of the first crack and the saturated crack density of each Cr coating sample.

The invention relates to the technical field of PET materials, in particular to a continuous fiber reinforced high-performance PET material and a preparation method thereof. According to the technical scheme, the PET composite material comprises the following raw materials in parts by weight: 100 parts of PET resin, 30-65 parts of continuous fibers, 1.5-4.5 parts of a hydrolysis stabilizer, 0.8-2.5 parts of a nucleating agent, 2-6 parts of an antistatic agent and 5-15 parts of an interface treating agent composition. Wherein the continuous fibers are three-dimensional orthogonal woven fibers subjected to surface modification treatment, and the interface treating agent composition comprises an epoxy resin emulsion, a silane coupling agent and a nano reinforcing filler. According to the invention, the mechanical property of the PET material is obviously improved, the thermal property of the PET material is improved, the hydrolysis reaction in a high-temperature and high-humidity environment is effectively inhibited, the interface bonding force between fibers and a matrix is enhanced, and the material is endowed with an antistatic function.

The invention discloses a method, a device and equipment for determining interface bonding energy of a laser sintering film and a medium. In the scheme, each film sample is prepared in advance through different laser parameters, and a power exponential function prediction model is generated according to the interface bonding energy and temperature energy ratio of each film sample; when the interface bonding energy of the thin film generated by sintering based on the new laser parameters is evaluated, the temperature energy ratio is obtained only by utilizing to-be-evaluated laser parameter simulation, and then the temperature energy ratio is input into the power exponential function prediction model, so that the interface bonding energy of the thin film under the new laser parameters can be obtained. Visibly, since the temperature energy ratio and the interface bonding energy have extremely strong power exponential function correlation, when the interface bonding energy is determined, multiple tests are not required to be executed, and the interface bonding energy can be quickly and accurately predicted only by determining the temperature energy ratio under the new laser parameter through simulation, so that the optimal laser parameter is found, and the accuracy of the interface bonding energy is improved. The research and development period is greatly shortened; the cost is reduced.

The invention provides a device and a method for testing the interface bonding force of a composite current collector. The device for testing the interface bonding force of the composite current collector comprises a testing platform, a fixing tool, a drawing tool and a curing plate, a to-be-tested sample is laid on the surface of the test platform; the fixing tool comprises a first bearing cross beam, a second bearing cross beam and a plurality of limiting parts, the first bearing cross beam and the second bearing cross beam are detachably connected with the testing platform and used for fixing a to-be-tested sample, and the two ends of each limiting part are movably connected with the first bearing cross beam and the second bearing cross beam respectively; the limiting parts are provided with detection areas, or every two adjacent limiting parts are spliced to form a detection area; the drawing tool is positioned in the detection area and is connected with the sample to be detected; the curing plate and the test platform are arranged in a stacked mode, and the curing plate is used for clamping and curing the drawing tool. The shape of the to-be-tested sample is not limited, detection of the specified area of the sample is achieved, the to-be-tested sample is evenly stressed, and the test success rate is increased.

The invention relates to the field of explosive welding layered metal composite materials, and provides a dust-removing and environment-friendly explosive welding method which comprises the following steps: manufacturing a water-sand foundation: placing an explosive welding device on the water-sand foundation; laying a water bag and a detonating cord on the periphery of the explosive welding device, and finally detonating the explosive welding device and the detonating cord at the same time to complete explosive welding of the layered metal composite material. According to the dust-removing and environment-friendly explosive welding method, the water-sand foundation serves as the explosive foundation, dust formation during explosive welding can be reduced from the source, and the interface bonding performance of the layered metal composite material is improved; the water bags are distributed around the explosive welding device, the detonating cord is detonated to explode to cause atomization of the water bags, the water bags make contact with dust generated by explosive welding, and the effect of rapid dust removal is achieved. The two dust removal methods act together, operation is easy, the explosive distribution state does not need to be changed, and the welding quality is not affected; and the dust removal effect is also greatly improved.

The present invention discloses a laser additive manufacturing titanium-steel multi-material component, its equipment and method for improving interface bonding and forming performance by suppressing element diffusion through an intermediate layer. The laser additive manufacturing titanium-steel multi-material component includes a titanium alloy layer, an intermediate layer, and a stainless steel layer. The intermediate layer includes a single-element metal Ce layer and a single-element metal Cr layer; the titanium alloy layer, the single-element metal Ce layer, the single-element metal Cr layer, and the stainless steel layer are all sequentially deposited by a laser directed energy deposition process. It can be seen that, for the intermediate layer of the present invention, by designing the single-element metal Ce layer and the single-element metal Cr layer, the diffusion of Ti element in the titanium alloy layer and Fe element in the stainless steel layer is blocked through the mutual solubility characteristics of Ce and Cr, and good metallurgical bonding between different materials is achieved, solving the problems such as interface cracking and holes caused by brittle intermetallic compounds when titanium alloy and stainless steel are directly connected.

The invention belongs to the technical field of energy storage materials, and relates to an interface bonding layer of lithium and solid electrolyte, an interface bonding method and application, the bonding layer is deposited on the surface of a solid electrolyte matrix material through magnetron sputtering, and the bonding layer can be composed of tin-lead alloy, tin-silver-copper ternary alloy and other materials. The electrolyte is suitable for solid electrolytes of NASICON type, garnet type, sulfide, halide and the like; the bonding process is carried out at 70 DEG C under the pressure of 200MPa, so that the interface stability of the battery is remarkably improved, the interface impedance is reduced, the energy density is effectively improved, and the cycle life is effectively prolonged; in addition, the composition of the bonding layer and lithium have certain solubility, binary or multi-element alloy can be formed, uniform deposition of lithium is promoted, formation of lithium dendrites is inhibited, and the failure risk of the battery is reduced. According to the invention, the safety and stability of the battery are improved, the overall electrochemical performance is optimized, and powerful support is provided for the practical application of the solid-state metal lithium battery.

The invention provides a preparation method of aramid fiber mica paper, and relates to the technical field of aramid fiber mica paper preparation. The preparation method of the aramid fiber mica paper specifically comprises the following steps: S1, preparing raw materials; s2, aramid fiber surface treatment; s3, carrying out wet molding; s4, forming and preliminary dehydration; s5, carrying out mechanical compression; s6, designing a layered structure; and S7, drying and curing. According to the technology, uniform dispersion and high densification of the aramid fibers and the mica powder are achieved through wet-process forming and multi-layer structural design, the mechanical strength, the insulating property and the heat resistance of the composite material are remarkably improved, the interface bonding force of the fibers and particles can be improved through the interface enhancing technology, complex chemical treatment is avoided, and the composite material is suitable for being used for a large-scale industrial production. The production cost and the environmental burden are reduced, the multifunctionality of the material is optimized through the multi-layer structure, the chemical corrosion resistance and the dimensional stability are enhanced, the layering phenomenon is prevented through unique proportion control and interlayer binding force, and the overall reliability of the material is improved.

The invention provides an inner hole plasma spraying high-bonding-strength bonding layer and Y2O3 coating material and a preparation technology thereof. The bonding layer comprises a middle transition layer formed after Si and C on the surface of a graphite matrix are subjected to a chemical reaction. The inner hole plasma spraying high-bonding-strength bonding layer provided by the invention is composed of a silicon carbide transition layer generated by in-situ reaction of molten silicon and carbon on the surface of a graphite matrix, and can form a Si-O-M bridged bond with a subsequent ceramic coating, so that interface bonding is converted into chemical bonding from mechanical anchoring, and the bonding strength is improved. And meanwhile, by utilizing the thermal expansion characteristic of silicon carbide between graphite and ceramic, the purposes of buffering thermal mismatch stress step by step on the atomic scale, blocking high-temperature diffusion of carbon elements and endowing the coating with lasting high bonding strength and thermal cycling stability are achieved.

The invention discloses a coating technology of a self-cleaning glass coating, which adopts a water-based paint containing nano TiO2 / SiO2 hybrid sol (core-shell structure), a polyurethane modified silane coupling agent and a flatting agent, and forms a 150-300nm super-hydrophilic coating (the contact angle is less than or equal to 5 degrees) on the surface of glass through a synergistic process of gradient curing (three-stage heating at 80-150 DEG C) and ultraviolet radiation (a main wave band of 365nm and an auxiliary wave band of 280-320nm). The technology breaks through the bottleneck that low-temperature curing and high adhesive force are difficult to be compatible, and the contact angle of the coating is still lt after damp-heat aging; 10 degrees, the light transmittance loss lt; and 3%, the photovoltaic module is suitable for building curtain walls, automobile windshields and photovoltaic modules. The method comprises the following steps: (1) bonding a polyurethane chain segment with a mechanical interlocking enhanced interface through a hydrogen bond; (2) the SiO2 shell layer improves the TiO2 quantum efficiency; and (3) equipment zoned humidity control and inert atmosphere oxidation inhibition are realized, and unification of self-cleaning performance, optical performance and mechanical durability is realized by an environment-friendly process.

The invention belongs to the technical field of carbon fiber surface treatment, and particularly relates to a cross-linked polymer modified carbon fiber, a preparation method and a composite material. Aiming at the problem of insufficient interface bonding force between the existing polyarylsulfone / ketone thermoplastic sizing agent and the carbon fiber, the core of the invention is to apply a polyarylsulfone / ketone derivative of which a main chain or a side chain is provided with an electrochemically crosslinkable active group to the technical field of carbon fiber surface treatment. And constructing a covalent bond combined three-dimensional network structure coating on the surface of the carbon fiber in situ. According to the method, firm anchoring of the coating and the carbon fibers is achieved, and the interface load transmission efficiency and the interlayer shear strength of the carbon fiber / polyether-ether-ketone composite material can be remarkably improved. The method is mild in process condition, easy in parameter control and convenient in post-treatment, meets green manufacturing requirements, and has remarkable large-scale production advantages.