1041 results about "Interfacial bonding" patented technology

The invention discloses a high-bonding-strength flame-retardant composite current collector base film and a preparation method thereof. The high-bonding-strength flame-retardant composite current collector base film is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 1.5 parts of a lubricant, 0.8 part of an antioxidant and 16 parts of reinforced flame-retardant composite particles, the reinforced flame-retardant composite particles are prepared by the following steps: S1, preparing amidated porous carbon microspheres; s2, compounding the amidated porous carbon microspheres with mica powder to prepare a composite carrier; s3, loading a flame retardant to prepare a flame-retardant compound; s4, in-situ grafting of maleic anhydride grafted polypropylene is carried out, and the reinforced flame-retardant composite particles are obtained. By adding the reinforced flame-retardant composite particles into the PP resin, the flame retardance and mechanical strength of the PP-based composite current collector base film and the interface bonding force between the PP base film and the metal conductive layer can be comprehensively improved.

The invention discloses an interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material and a method. The interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material comprises a maleic anhydride grafted polypropylene matrix and a core-shell structure filler dispersed in the maleic anhydride grafted polypropylene matrix, the core-shell structure filler comprises hydroxylated boron nitride nanoparticles covalently grafted on a polymer shell layer on the surface of the core-shell structure filler; the polymer shell layer is polyglycidyl methacrylate; the epoxy group of the polymer shell layer reacts with the anhydride group of the maleic anhydride grafted polypropylene matrix to form a covalent bond. The invention has the characteristics of strong interface bonding force, uniform filler dispersion, and excellent comprehensive electrical properties and processability.

The invention discloses fiber reinforced concrete for bridge deck pavement and a preparation method thereof, and belongs to the technical field of concrete. The fiber reinforced concrete is prepared from the following raw materials: Portland cement, modified basalt fiber, a slow-release mineralizer, a stress-oriented dispersing aid and the like. The modified basalt fiber is a basalt fiber which is subjected to amino silanization through a silane coupling agent KH-550 and then is catalytically grafted with ethylenediamine tetraacetic acid and hydroxyethyl methylacrylate through DCC (dicyclohexylcarbodiimide); the slow-release mineralizer comprises calcium sulphoaluminate and silicon-based coated nano calcium sulfate; the silicon-based coated nano calcium sulfate is core-shell structure powder formed by coating a nano calcium sulfate core material with a silicon dioxide shell layer; the concrete is strong in interface bonding, excellent in dynamic fatigue resistance, good in durability and stable in volume, and the problem that the mechanical property, the durability and the dynamic anti-interference capability of the concrete cannot be considered at the same time is solved.

The invention relates to a PVB (polyvinyl butyral) composite film as well as a preparation method and application thereof. The PVB composite film is prepared from the following raw materials in parts by weight: 100 parts of PVB resin, 1-10 parts of nano praseodymium oxide, 1-10 parts of a dispersing agent, 0.01-1 part of a coupling agent and 20-50 parts of a plasticizer. The nano praseodymium oxide is added into the PVB resin, and the infrared absorption band of the PVB composite film is optimized by utilizing the infrared absorption performance, chemical stability and heat-resistant stability of the nano praseodymium oxide, so that infrared radiation can be efficiently blocked, and the excellent heat insulation effect and long-term use stability of the PVB composite film are realized. Furthermore, the nano praseodymium oxide is modified by a coupling agent, so that the dispersion uniformity of the nano praseodymium oxide in the PVB resin and the interface bonding force of the nano praseodymium oxide and the PVB resin are improved, the light transmittance loss of the PVB composite film is reduced, and the mechanical property and the heat insulation property of the composite film are improved.

The invention relates to the field of optical display and material engineering, in particular to a silica gel integrated optical film with a 3D light splitting function and a manufacturing method of the silica gel integrated optical film. A silica gel integrated optical film with a 3D light splitting function comprises a transparent optical base material and a microstructure layer, and the microstructure layer is combined on the surface of the transparent optical base material in an integrated forming mode. And the microstructure layer is an anhydrous silica gel-resin composite material obtained by combining organic silica gel with low refractive index and resin with high refractive index through an anhydrous chemical reaction system. The optical film obtained in the invention has excellent interface bonding stability and long-term reliability, the overall thickness of the optical film is small, the optical loss is reduced, the light transmittance is higher, and the overall transmittance can reach 93% or above. And the manufacturing process integration degree and the mold repeated utilization rate are high, the industrial batch production requirement can be met, and the excellent industrial application prospect is achieved.

The invention discloses light building corrosion-resistant fiber concrete and a production method thereof, the light building corrosion-resistant fiber concrete comprises the following raw materials by mass: 300-400 parts of high belite sulphoaluminate cement, 10-20 parts of modified corrosion-resistant fiber, 50-80 parts of a mineral admixture, 800-1000 parts of a coarse aggregate, 600-700 parts of a fine aggregate, 5-10 parts of a composite admixture, and 120-150 parts of water; wherein the mineral composition of the high belite sulphoaluminate cement is as follows: 18 to 25 percent of C4AF, 15 to 20 percent of anhydrous calcium sulphoaluminate (C4A3S), 45 to 55 percent of belite (C2S) and less than or equal to 10 percent of other minerals. By optimizing the ratio of C4AF to anhydrous calcium sulphoaluminate in the high belite sulphoaluminate cement and combining with a special calcining process, the contradiction of low early strength caused by increase of the content of C4AF is solved, and meanwhile, a foundation is laid for long-term corrosion resistance; and by adopting a silane coupling agent-nano silicon dioxide composite modification technology, the limitation of limited single modification effect is solved, and the synchronous improvement of the corrosion resistance of the fiber and the interface bonding strength is realized.

The invention relates to the technical field of building solid waste resource utilization, and discloses a bamboo-based biochar and cement-based waste-based artificial aggregate preparation method, which comprises: using cement-based waste powder as a main raw material, and using ordinary Portland cement and bamboo-based biochar as auxiliary materials, firstly carrying out alkali modification or ultrasonic modification treatment on the bamboo-based biochar, and then carrying out drying to obtain the artificial aggregate based on the bamboo-based biochar and the cement-based waste. The surface property is improved; then mixing the materials, and preparing a regular and uniform aggregate blank by adopting a disc granulation method and accurately controlling the inclination angle and the rotating speed in combination with a reserved dry powder rolling and sticking process; finally, the blank is cured, particularly carbonization curing is adopted, and carbon dioxide and cement hydration products react to generate calcium carbonate to fill internal pores. According to the invention, interface bonding is enhanced through the modified charcoal, the porosity is reduced through carbonization curing, the prepared artificial aggregate has the advantages of high compressive strength and low water absorption, and high-proportion utilization of cement-based wastes is realized.

The invention discloses a composite material hollow plate and a preparation method, and belongs to the technical field of composite material plate preparation. The composite material hollow plate comprises an outer plate and an inner plate, a plurality of corrugated supporting structures are connected between the outer plate and the inner plate, and a cavity is formed between every two adjacent corrugated supporting structures. A wear-resistant reinforcing agent is added into an outer plate material to improve the surface wear resistance, an epoxy-amine dual-core double-wall microcapsule is introduced into an inner plate material to enhance the crack repairing capacity, and a shape memory reinforcing agent is added into a corrugated supporting structure material to endow the material with the shape memory characteristic. The invention solves the technical problems of difficulty in consideration of strength and toughness, short service life, poor buffer performance, insufficient interface bonding strength and the like of the existing composite material hollow plate, and is particularly suitable for steel coil packaging and other application scenes requiring repeated use and high reliability.

The application relates to the technical field of composite materials, and particularly discloses a carbon fiber / epoxy electromagnetic shielding composite material with strong interface bonding and a preparation method thereof, which comprises the following steps: hydrothermal reaction of oxidized carbon fibers O-CF, an organic ligand and an iron source in a solvent, washing and drying of the fibers to obtain MIL-loaded carbon fibers, carbonization treatment to obtain iron-based oxide-loaded carbon fibers dF@CF, vacuum-assisted introduction of epoxy resin into the multilayer carbon fibers dF@CF, and curing to obtain the carbon fiber / epoxy electromagnetic shielding composite material. The organic ligand and trivalent iron ions are used to synthesize a large number of rhombic MILs on the active sites on the surface of the carbon fibers, the MILs are reduced into iron-based oxide nanoparticles after carbonization, the iron-based oxide nanoparticles are closely loaded on the surface of the carbon fibers, the interface bonding performance is improved, the electromagnetic shielding efficiency is increased, and the carbon fiber / epoxy composite material with both the interface and the electromagnetic shielding efficiency is realized.

The invention discloses a carbon fiber modified sizing agent as well as a preparation method and application thereof. The preparation method of the carbon fiber modified sizing agent comprises the following steps: (1) reacting 5-norbornene-2-methylamine with monofunctional epoxy resin to obtain slurry; and (2) dissolving the slurry prepared in the step (1) in an organic solvent to prepare the modified sizing agent. And then obtaining the modified carbon fiber through a dipping and sizing process. The method is simple in process, and the interface bonding strength of the carbon fibers and the polydicyclopentadiene can be greatly improved.

The invention discloses a graphene aerogel modified elastic graphite material and a preparation method thereof, and the graphene aerogel modified elastic graphite material comprises the following components by mass: 50-80 parts of crystalline flake graphite; 8 to 15 parts of graphene aerogel; 3 to 8 parts of aminated modified boron-doped carbon nanotubes; 2 to 6 parts of hydroxyapatite-cerium oxide composite nano particles; 1 to 4 parts of a polyimide-montmorillonite nano composite material; 0.5 to 3 parts of titanate coupling agent modified nano silicon dioxide; 1-3 parts of a dispersant; 2-5 parts of a binder; the amination modified boron-doped carbon nanotubes can enhance the electrical conductivity and interface bonding force of the material, the hydroxyapatite-cerium oxide composite nanoparticles improve the high-temperature stability and mechanical toughness of the material, and the polyimide-montmorillonite nanocomposite improves the corrosion resistance and resilience durability of the material. And the titanate coupling agent modified nano silicon dioxide further optimizes the dispersion uniformity of all the components, and the comprehensive performance of the material is remarkably improved.

The invention discloses a preparation method of a high-performance boehmite coating diaphragm based on photocuring interface grafting, and belongs to the technical field of lithium ion battery materials. The method comprises the following steps: carrying out surface vinyl activation on boehmite particles, and carrying out plasma activation on a polyethylene diaphragm base material; mixing the activated boehmite particles with a thiolated polyurethane acrylate solution containing a photoinitiator to prepare slurry; and after coating, carrying out ultraviolet irradiation in a wet coating state, synchronously initiating acrylate polymerization, sulfydryl-alkene click reaction and free radical grafting reaction, and finally drying and curing to obtain the product. By constructing a covalent bonding interface, the interface bonding strength, the thermal stability and the electrochemical performance of the diaphragm are remarkably improved, the problem that a traditional coated diaphragm is easy to peel off is solved, and the preparation method is suitable for manufacturing a high-performance lithium ion battery.

The invention relates to the field of high polymer material processing, and discloses a high-efficiency low-energy-consumption granulation process and system for a full-biodegradable multiphase composite material, and the process comprises the following steps: feeding raw materials such as polypropylene carbonate, polyester, plant fibers and four-stage activated biomass hydroxyapatite into a double-screw extruder with the length-diameter ratio of not less than 64: 1 in a grading manner according to heat sensitivity; the temperature, the pressure and the shear field are cooperatively controlled, and three-section type temperature distribution of intensified melting, short-time reaction and rapid cooling is established; and carrying out three-stage gradient vacuum devolatilization and underwater pelletizing to obtain a finished product. The four-stage activated biomass hydroxyapatite is prepared by plasma etching, hydrophobic coating, interface coupling and melt pre-dispersion. The problem of degradation of heat-sensitive components is solved through graded feeding and asymmetric temperature control, the dispersity and interface bonding force of the filler are improved by utilizing a four-stage activation technology, closed-loop control is realized by combining online rheology monitoring and an energy consumption model, and continuous production of the full-biodegradable material with low energy consumption, low volatile matter and high mechanical property is realized.

The invention discloses a compression-resistant and wear-resistant cable and a preparation method thereof, the compression-resistant and wear-resistant cable comprises a cable core, a wrapping layer and a sheath layer, the cable core is formed by twisting a plurality of wire cores, each wire core is composed of a conductor formed by twisting a plurality of tinned copper wires and an insulating layer wrapping the conductor, and fillers are arranged between the wire cores and the wrapping layer; the outer sheath layer is prepared from the following components in parts by weight: 100 parts of a polyurethane elastomer, 10-15 parts of a modified filler, 1-2 parts of a lubricant, 0.5-0.7 part of an antioxidant and 0.3-0.5 part of an ultraviolet light absorber. According to the pressure-resistant and wear-resistant cable, the modified filler prepared by a specific method is added into the outer sheath layer, and the interface bonding strength of the filler and a polyurethane matrix is greatly enhanced, so that the cable sheath layer is endowed with excellent tear strength, compression resistance and wear resistance, and the service life of the cable in a harsh industrial environment is remarkably prolonged.

The invention discloses a composite material containing siloxane benzoxazine interface modified basalt fibers and a preparation method of the composite material, and belongs to the technical field of polymer composite materials. Benzoxazine is adopted for surface grafting modification of basalt fibers for the first time, and the composite material is prepared through the following steps that firstly, a piranha solution is used for treating the surfaces of the basalt fibers, so that a large number of hydroxyl groups are formed on the surfaces of the basalt fibers; and then siloxane-containing benzoxazine is hydrolyzed and grafted on the hydroxyl on the surface of the fiber. According to the method, not only is the surface roughness of the fiber increased, but also a crosslinkable oxazine ring group is introduced. In the heating curing process, the oxazine ring is subjected to ring-opening reaction, and forms a cross-linked structure with the basalt fiber and the epoxy resin, so that the interface bonding force between the fiber and the resin is remarkably enhanced. In addition, flexible aliphatic chains contained in the siloxane-containing benzoxazine can improve the toughness of the composite material, further improve the mechanical properties of the composite material, and facilitate the expansion of the application range of the basalt fiber composite material.

The invention discloses an anti-cracking calcium silicate board and a preparation method thereof, and relates to the technical field of light building materials. The method comprises the following steps: carrying out ball milling, acid pickling and silane coupling agent surface modification on quartz sand to obtain alkylated quartz sand; and carrying out dry mixing on the mixture, metakaolin, silica fume and cement. The linen fiber is subjected to alkali treatment and hydroxyethyl acrylate graft modification, and the PVA fiber is subjected to silane coupling agent and nano silicon dioxide coating treatment. Dispersing graphene oxide, carboxylated styrene-butadiene emulsion and other assistants in water, adding the dry mixture, uniformly stirring, and then adding the two modified fibers to prepare mixed slurry; and finally, carrying out pressure forming, pre-curing, high-pressure steam curing and drying to obtain a finished product. Through substrate silanization, fiber grafting / nanocrystalline seed modification and synergistic introduction of graphene oxide and elastic emulsion, the interface bonding strength and toughness are remarkably enhanced, crack initiation and propagation are effectively inhibited, and the plate has excellent cracking resistance.

The invention relates to the technical field of anti-drag films, and particularly discloses a high-strength durable anti-drag film and a preparation method thereof.The high-strength durable anti-drag film is prepared by adopting an antioxidant and CTAB-montmorillonite to modify TPU to form a substrate film and improve the strength and aging resistance of a material, then adopting a block copolymerization mode to prepare a block prepolymer containing a benzene ring and a siloxane chain segment, and finally preparing the high-strength durable anti-drag film. According to the present invention, the maleic anhydride grafted SEBS is adopted as the raw material, such that the heat resistance and the strength of the material can be improved while the ultraviolet resistance and the resistance reducing performance of the material can be improved, the adhesive containing the maleic anhydride grafted SEBS is prepared, and during curing, the interface bonding strength, the peeling strength and the strength and the heat resistance of the material can be enhanced through the physical entanglement and chemical bonding form.

The invention provides a coating composition, a metal protective coating and a preparation method of the metal protective coating. The coating composition is prepared from the following components in percentage by weight: 15 to 50 weight percent of silica sol, 3 to 25 weight percent of glass powder, 10 to 25 weight percent of silane coupling agent, 0.5 to 2 weight percent of organic acid, 2.5 to 20 weight percent of filler and the balance of water, wherein the melting point of the glass powder is 400-600 DEG C. The glass powder has the specific melting point, can soften and flow in the coating curing process, is fused with the silica sol and fills coating gaps, a more compact network structure is formed, the sealing performance and permeation resistance of a coating are improved, and corrosion of a corrosive medium to metal is blocked. The silane coupling agent is introduced, so that the interface bonding force between the coating and the metal substrate can be enhanced, and the adhesive force of the coating to the metal substrate is improved. The coating composition takes water as a solvent, so that the emission of organic volatile matters and the harm to the health of operators are reduced.

The invention discloses a preparation method of a nano silicon dioxide modified asphalt recycled fine aggregate plant-mixed hot recycled high-performance mixture, and belongs to the field of road engineering materials. The method specifically comprises the following steps: firstly, crushing and screening the waste asphalt mixture to obtain regenerated fine aggregate with the particle size of less than or equal to 2.36 mm, and activating the regenerated fine aggregate with a silane coupling agent KH-560; secondly, nano SiO2 with the particle size of 20-50 nm is subjected to ultrasonic dispersion and then modified with a silane coupling agent KH-570; mixing the aged asphalt and new asphalt according to a certain proportion, adding a proper amount of regenerant and modified nano SiO2, and carrying out shear modification treatment; and finally, mixing the modified recycled fine aggregate, the new coarse aggregate and the new mineral powder according to the target gradation, and fully mixing with the nano-modified recycled asphalt to obtain the mixture. The interface bonding performance of the recycled fine aggregate and asphalt is remarkably improved through dual modification, the problems that a traditional recycled mixture is poor in durability and insufficient in high-temperature stability are solved, and the high-performance mixture is prepared.

The invention discloses a low-temperature-impact-resistant high-strength bolt for a high-cold railway and a heat treatment method of the low-temperature-impact-resistant high-strength bolt. The bolt is of a special three-layer structure of a base body, a bionic nanometer laminated layer and a high-entropy alloy nitriding layer, wherein the grain size of the base body reaches the ASTM8 level or above; the bionic nano laminated layer is formed by alternately depositing TiN and VC, and the thickness of a single layer is less than 50nm; the high-entropy alloy nitriding layer is made of AlCoCrFeNiTi, the thickness is larger than 50 microns, the heat treatment method comprises the steps of grain refinement pretreatment, lamination preparation through magnetron sputtering, high-entropy alloy laser cladding, electromagnetic field assisted nitriding, oil quenching, cryogenic oscillation, tempering and the like, and intelligent quality control means such as a machine learning model, sound pressure feedback and image recognition are integrated. According to the scheme, the impact energy of the bolt at the temperature of minus 60 DEG C is higher than 55 J, the tensile strength is larger than 1200 MPa, the surface hardness is not lower than 1200 HV, the interface bonding critical load is higher than 80 N, and the problems of low-temperature brittle fracture, obdurability contradiction and quality consistency of the high and cold bolt are solved.

The invention provides a preparation method and application of an air-stable sulfide composite electrolyte, and the method comprises the following steps: S1, weighing an M source (M = Cd, Mn and Zn), P2S5 and S powder according to a ratio of 1: 1: 3, adding iodine for catalysis, carrying out heat preservation at 700-720 DEG C for 6-7 days, and carrying out K + insertion, Li + exchange and ultrasonic centrifugation to prepare a LiMyPS3 nanosheet dispersion liquid; s2, dissolving PEO and LiTFSI in acetonitrile to form a film, drying to obtain a pure PEO film, immersing the pure PEO film into a dopamine Tris buffer solution with the concentration of 2 mg / ml and the pH value of 8.5, oscillating for 12-24 hours in an oxygen environment, and washing and drying to obtain a PDA-coated PEO film; and S3, carrying out suction filtration on the LiMyPS3 dispersion liquid to obtain a self-supporting membrane, stacking according to the sequence of "PDA-coated PEO membrane-sulfide membrane-PDA-coated PEO membrane", carrying out isostatic pressing at 10-20 MPa, and then carrying out vertical cutting at 0 DEG C to obtain the 20-30 [mu] m composite membrane. The film has the advantages of good air stability, almost no loss of conductivity after 30 days, room temperature conductivity of 9.2-10.2 ms / cm, excellent interface bonding force and mechanical strength, and stable window of 4.3-4.5 V, is adaptive to a high-voltage positive electrode, and can be used for a high-energy-density solid-state lithium battery.

This invention relates to the field of waterproof membrane technology, specifically to a TPO thermoplastic polyolefin polymer composite material. This material is composed of multiple components, including an interface-controlled masterbatch. Its core lies in the process of sequentially hydroxylating, treating with vinyltrimethoxysilane, hydrolyzing and condensing tetraethyl orthosilicate, and treating with octadecyltrimethoxysilane to obtain a surface-functionalized filler, which is then combined with maleic anhydride-grafted polypropylene to form the interface-controlled masterbatch. This design significantly improves the interfacial bonding between the filler and the polymer matrix, enabling the material to maintain excellent mechanical properties, dimensional stability, and low-temperature flexibility even after artificial climate aging, and effectively ensuring the long-term durability and reliability of welded joint areas.

The present application relates to the technical field of foam concrete preparation, in particular to foam concrete based on ettringite micro-expansion effect and a preparation method thereof, the preparation method comprising the following steps: S1. preparation of modified ettringite; S2. dry material premixing; S3. preparation of additives; S4. concrete forming. The modified ettringite and modified calcium sulfate synergize to significantly improve the interfacial bonding strength of aggregate-matrix, so that the early and medium-term compressive strength of the composite system is improved; at the same time, the improved pore structure forms a triple action mechanism of "ettringite reinforcement-pore optimization-stress buffering": ettringite improves the interfacial bonding and shrinkage compensation capacity, the dissolution space of aggregate absorbs the volume deformation stress, the pore structure optimization reduces the humidity diffusion gradient, and the strength-shrinkage synergistic control is realized.

The application discloses a high-viscosity recycled asphalt mortar based on oil-rich RAP fine materials and a preparation method thereof, and belongs to the technical field of highway engineering materials. The high-viscosity recycled asphalt mortar comprises the following components: oil-rich RAP fine materials, base asphalt, a high-viscosity modifier, a recycling agent and a dissolving agent. The high-viscosity modifier comprises the following components: waste tire rubber powder grafted with GMA (glycidyl methacrylate), BMI (bismaleimide), an adhesive, isooctanol polyoxyethylene ether and sulfur. The waste tire rubber powder grafted with GMA can improve the interfacial bonding strength of the oil-rich RAP fine materials and the base asphalt, thereby improving the water damage resistance of the recycled asphalt mixture. The BMI forms an interpenetrating structure (crosslinking network) among the rubber powder, the oil-rich RAP fine materials and the base asphalt, thereby improving the crack resistance of the recycled asphalt mixture.

The invention relates to a glass fiber impregnating compound, a low dielectric glass fiber and a cyanate ester resin-based wave-transparent composite material, and belongs to the technical field of glass fiber impregnating compounds, the glass fiber impregnating compound comprises the following components by mass: 35-50 parts of a low molecular weight epoxy emulsion, the molecular weight of epoxy resin in the low molecular weight epoxy emulsion being 400-600; 5-15 parts of a high molecular weight epoxy emulsion, wherein the molecular weight of epoxy resin in the high molecular weight epoxy emulsion is 5000-8000; 5-10 parts of a low molecular weight polypropylene emulsion, wherein the molecular weight of polypropylene in the low molecular weight polypropylene emulsion is 2000-3000; 20 to 25 parts of a lubricant; 15-20 parts of a silane coupling agent, wherein the silane coupling agent comprises a main silane coupling agent and an auxiliary silane coupling agent; and 0.1 to 0.3 part of graphene. The impregnating compound provided by the invention has good compatibility and interface bonding strength with a cyanate ester resin matrix.

The invention belongs to the technical field of polymeric membrane composite glass, and discloses a preparation method and application of polymeric membrane composite glass, the polymeric membrane composite glass comprises a first glass layer, a second glass layer and an EVA composite membrane located between the two glass layers, the EVA composite membrane contains nano metal oxide particles, and the nano metal oxide particles contain nano metal oxide particles. The nano metal oxide particles comprise cerium oxide, tungsten oxide, titanium oxide and yttrium oxide. The middle layer of the EVA composite film of the polymeric film composite glass additionally comprises nano metal oxide particles, tungsten oxide absorbs near-infrared heat radiation, titanium oxide reflects infrared light, cerium oxide and yttrium oxide can absorb ultraviolet light, and the heat insulation performance is excellent; according to the present invention, with the nano-metal oxide particles, the tungsten oxide, the tin oxide and other nano-oxide particles, the elastic modulus, the density and the viscosity of the EVA are increased, the sound wave conduction path is effectively blocked, the sound insulation and noise reduction performance is excellent, the nano-metal oxide particles can improve the interface bonding strength of the EVA composite film and the glass layer, and the safety performance is high.

The invention belongs to the technical field of coatings, and discloses a corrosion-resistant high-impact-resistant electrophoretic coating and a preparation method thereof. The coating comprises a cationic water-based resin emulsion, flaky nano clay with epoxy groups grafted on the surface, a curing agent, a cosolvent and a functional additive, the core of the method is that through electric field driving in the electrophoretic deposition process, resin micelles and modified nano clay form a bionic micro-nano laminated structure in which hard inorganic sheet layers and flexible organic layers are alternately arranged on the surface of a cathode in situ, and interface bonding between the sheet layers is enhanced through chemical bonding. The bionic micro-nano laminated structure with clear periodicity and a chemical bonding interface is constructed through an in-situ co-deposition technology driven by an electric field, and the contradictions that hardness and toughness cannot be achieved at the same time and impact resistance and corrosion resistance are difficult to cooperate in the prior art are solved; the method is suitable for the high-end industrial fields such as automobile bodies, high-speed rail bogies, offshore wind power towers and the like with strict requirements on comprehensive protection performance.

This invention relates to the field of powder forging technology and discloses a high-precision forklift mast support processing method, including the following preparation steps: mixing iron powder, chromium powder, cobalt powder, titanium powder, manganese powder and reinforcing agent, drying and ball milling to obtain a mixture; pressing the mixture on a press to form a forklift mast support preform, then placing the preform in a sintering furnace for sintering to obtain a sintered blank; heating the sintered blank to the forging temperature, placing it in a forging die for forging, and then heat-treating to obtain a high-precision forklift mast support. The high-precision forklift mast support obtained by mixing iron powder, chromium powder, cobalt powder, titanium powder, manganese powder and reinforcing agent to form a uniform mixture, pressing and sintering the mixture to form a sintered blank, and placing the sintered blank in a forging die for forging has high mechanical strength and good interfacial bonding, making it less prone to cracking.

The invention relates to an in-situ nanowire skeleton reinforced aerogel composite material and a preparation method thereof. The preparation method comprises the following steps: in-situ growth of a nanowire skeleton from quartz fiber felt, preparation of silica sol, sol impregnation and aging, and supercritical drying. The internal pores of the prepared nanowire skeleton reinforced aerogel composite material are refined and segmented by an in-situ grown nanowire network, the interface bonding of nanowires and aerogel is improved through interlocking, fracture under the action of external force is prevented, the structural performance of the aerogel composite material is improved, and the performance of the aerogel composite material is improved. The high-temperature-resistant and low-thermal-conductivity nanowire porous framework composite silicon oxide aerogel thermal insulation material is prepared by a simple and controllable process.

This invention relates to the field of cement technology, specifically to a fiber-reinforced high-strength cement pole and its preparation method. The pole comprises a steel wire skeleton and a conical annular pole body covering its outer circumference. The pole body is formed by centrifugal molding and curing of a cement-based composite material containing interfacially pre-complexed basalt chopped fibers. The interfacially pre-complexed basalt chopped fibers are obtained sequentially through alkaline activation, silane-nano silica treatment, polycarboxylate segment grafting, and calcium ion pre-complexation, and are added to the slurry after the cementitious material is initially moistened and before the aggregate is added. This method improves the dispersibility and interfacial bonding stability of the basalt chopped fibers in a low water-cement ratio cement matrix, thereby enhancing the pole's compressive, tensile, crack, shrinkage, and freeze-thaw resistance.