3776 results about "Interface bonding" patented technology

The invention relates to the field of concrete, and provides high-strength concrete and a preparation method thereof, and the high-strength concrete comprises modified basalt chopped fiber, a self-repairing agent, cement, fly ash, slag powder, coarse aggregate, natural sand, a water reducing agent and an air entraining agent. The modified basalt chopped fiber is oxidized by hydrogen peroxide, etched by hydrochloric acid and modified by a nano silicon dioxide coating, so that the interface bonding force is enhanced. The self-repairing agent is prepared by adopting expanded perlite to load bacillus through thallus culture, purification, dipping adsorption and low-temperature vacuum drying, CaCO3 deposition can be induced at concrete cracks, and self-repairing is achieved. The invention further provides a preparation method of the concrete. The preparation method comprises the steps of aggregate screening, hydrated liquid preparation, wet mixing, fiber and self-repairing agent adding, vibration forming and curing. The crack resistance of the concrete is improved by enhancing the fiber-matrix interface bonding force, meanwhile, the service life of the concrete is prolonged by utilizing a biological self-repairing technology, and the concrete is suitable for high-durability concrete engineering.

The invention belongs to the technical field of polymer plastic materials, and particularly relates to a high-temperature-resistant anti-corrosion polytetrafluoroethylene material and a preparation method thereof. The polytetrafluoroethylene is prepared from the following raw materials in parts by weight: 50 to 60 parts of polytetrafluoroethylene, 5 to 10 parts of fluorinated modified graphene oxide, 3 to 5 parts of aluminum powder, 5 to 8 parts of modified silicon carbide fiber, 3 to 5 parts of silane modified nano silicon dioxide, 2 to 3 parts of polyphenylene sulfide, 2 to 3 parts of polyimide, 0.5 to 0.8 part of dispersing agent and 0.5 to 1 part of antioxidant. The heat conduction performance and the interface bonding force are improved through the fluorinated modified graphene oxide, the impact resistance and the wear resistance are enhanced through the silicon carbide fibers, and the corrosion resistance and the wear resistance are improved through the aluminum powder; silane modified silicon dioxide enhances the mechanical property of the composite material by improving the dispersity of the filler, and PPS and PI interact with the surface of the filler through polar groups in molecular chains, so that the interface strength is improved, and the toughness and the thermal stability are improved.

The invention discloses a 3D printing layered honeycomb sandwich panel and a processing method thereof. The processing method comprises the steps that a digital forming platform is constructed, process parameters are initialized, a functional interface layer is laid on a printing substrate in advance, a three-dimensional model is generated, and the printing substrate is divided into a plurality of gradient areas; collaborative printing of a lower panel structure is executed, and a composite panel base body is formed by adopting a multi-nozzle alternate deposition process; according to the characteristics of the divided gradient areas, honeycomb units are formed layer by layer by dynamically controlling printing rheological parameters, and a gradient honeycomb core layer is constructed; the cooperative growth of the upper panel and the gradient honeycomb core layer is realized by adopting a rotary incongruous printing strategy; the performance of the core layer material is regulated and controlled through a multi-stage heat treatment process, and the functional interface layer is activated to obtain the honeycomb sandwich panel; according to the honeycomb sandwich board, the mechanical property customized distribution of the honeycomb core layer is realized, the surface-core interface bonding strength is improved by combining the directional activation mechanism of the micro interlocking structure and the functional interface layer, and the honeycomb sandwich board with high mechanical property and thermal stability is provided.

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 an integrated injection molding method for transparent and opaque materials of an automobile lampshade, and aims to solve the problems of infirm interface bonding, low production efficiency and unstable product quality in the prior art. The method comprises the steps of material pretreatment, staged injection molding, interface fusion enhancement, gradient cooling and the like. By optimizing temperature control, viscosity matching and compatilizer adding, efficient fusion of a transparent material and an opaque material is achieved, and the mechanical performance and optical quality of a product are improved. The method is simple in process, high in production efficiency and suitable for large-scale production of automobile lampshades, and has wide application prospects.

The invention provides a hot in-place recycling asphalt mixture and a construction method, and relates to the technical field of asphalt mixtures, and the hot in-place recycling asphalt mixture is obtained by recycling old asphalt pavement materials in a high proportion, reducing new material consumption and carbon emission, realizing resource recycling and green construction and introducing a regenerant to recover the performance of aged asphalt. The high-temperature rut resistance, the low-temperature crack resistance, the fatigue resistance and the interface bonding strength of the mixture are synergistically improved by matching with the styrene butadiene rubber modifier, the basalt fiber, the nano silicon dioxide and other functional materials, and the mixture is ensured to be uniform and free of segregation through precise feeding sequence, high-pressure atomization spraying and forced stirring parameter control. The defects of gray materials, oil balls and the like are avoided, the compactness, the flatness and the overall structure stability of the regenerated pavement are improved, and the problems of performance degradation and insufficient durability of a traditional regenerated mixture are solved.

The invention provides a preparation method of a high-temperature-resistant antioxidant chopped carbon fiber reinforced ceramic-based composite material, and relates to the field of ceramic-based composite material preparation, and the preparation method comprises the following steps: S1, selection and surface treatment of reinforced fibers: selecting chopped carbon fibers as a reinforced material, and carrying out surface modification treatment on the chopped carbon fibers to obtain the reinforced fibers; according to the present invention, the surface modification treatment is performed on the short carbon fiber, and particularly the SiC coating is coated on the fiber surface by using the chemical vapor deposition (CVD) method, such that the oxidation resistance of the carbon fiber under the high temperature condition is effectively improved. The coating enhances the stability of the fiber, reduces the oxidation loss of the fiber at high temperature, enhances the interface bonding force between the fiber and the ceramic matrix, and avoids stripping or interface failure in a high-temperature environment, thereby ensuring the overall stability and service life of the material.

The invention provides a titanium-steel composite plate manufacturing optimization method and system based on a neural network model, and relates to the technical field of artificial intelligence, and the method comprises the steps: collecting interface data in a titanium-steel composite plate manufacturing process, and generating interface combination features; inputting the interface bonding features into an adaptive memory network, and predicting interface bonding strength; generating an optimized process parameter combination through a double-delay depth Q network structure with a priority experience playback mechanism; and taking the optimized process parameter combination as an initial population, and generating an optimal process parameter scheme based on performance indexes and process stability by adopting a phase change temperature point staged control and theory-differential gradient fusion mode.

The invention provides conductive paste for a heterojunction solar cell and a preparation method of the conductive paste, and belongs to the field of conductive paste. The spherical nano-silver, the silver nanowires and the silver nanosheets are introduced, a three-dimensional conductive network is formed through three metal shapes, the conductivity of the paste is remarkably improved, high stability is kept in long-term use through the synergistic effect, and degradation of the conductivity is avoided; the carbon nanotubes are modified through mixed acid and a coupling agent, so that the dispersity is improved, the interface bonding force is enhanced, and the conductivity and mechanical strength of the slurry are improved; according to the graphene, the dispersity and compatibility are improved through introduction of sulfydryl, and the conductivity is restored through reduction of sodium borohydride; silver-coated silicon carbide is used as a filler to improve conductivity, retain hardness of silicon carbide, enhance wear resistance of the slurry and prolong service life; through the synergistic effect of the modified carbon nanotubes, the modified graphene and the silver-coated silicon carbide, the paste shows excellent performance in the aspects of conductivity, thermal stability and mechanical strength.

The invention discloses a rolling and annealing treatment process for a copper-steel composite strip, and relates to the technical field of material rolling, the process comprises the following steps: selecting a high-purity copper plate and a stainless steel plate, and depositing a nano nickel / graphene composite transition layer through a magnetron sputtering technology; the stainless steel layer is promoted to deform through front-section low-speed high-pressure rolling, and the copper layer interface bonding force is improved through rear-section high-speed low-pressure rolling; performing short-time local annealing by using a high-frequency induction coil; honeycomb-shaped micro-pits are formed in the stainless steel surface through the laser micro-texture technology, and the interface bonding force is improved in combination with the nano-nickel / graphene layer. Copper layer hardening is eliminated through low-temperature annealing, stainless steel recrystallization is promoted through medium-temperature annealing, and a nanometer precipitated phase is fixed through rapid water cooling; the heating rate is controlled, and nitrogen-hydrogen mixed gas is used for preventing oxidation; the rolling process and the annealing process are seamlessly connected, and the temperature, the stress and the atmosphere are detected in real time through an online monitoring system. The mechanical property, the corrosion resistance and the machining stability of the copper-steel composite strip are remarkably improved.

The invention discloses a preparation method of a medium-entropy alloy and stainless steel explosive welding composite board, and belongs to the field of metal-based composite material processing. The preparation method specifically comprises the following steps: polishing the medium-entropy alloy and the stainless steel to remove oil stains and oxides on the surfaces of the medium-entropy alloy and the stainless steel; a low-carbon steel anvil serves as a base plate, stainless steel serves as a base plate, a medium-entropy alloy serves as a compound plate, a corrugated board serves as a buffer layer of explosive and the compound plate, and metallurgical connection of the medium-entropy alloy plate and the stainless steel plate is achieved through low-detonation-velocity high-brisance mixed explosive. The interface bonding rate of the obtained composite board is larger than 98.8%, the yield strength is larger than 620 MPa, the tensile strength is larger than 735 MPa, the percentage elongation after fracture is larger than 40%, and the interface shear strength is larger than 300 MPa. The process is simple and convenient, and is suitable for industrial production.

The invention discloses a high-corrosion-resistance heating stainless steel composite pipe and a preparation technology thereof, and belongs to the technical field of composite pipe preparation. The stainless steel pipe serves as the innermost layer and the outermost layer, the carbon steel pipe serves as the middle part, the space between the stainless steel pipe and the carbon steel pipe is filled with the low-melting-point glass powder, the low-melting-point glass powder is melted under the high-temperature and high-pressure conditions in the machining process, and therefore welding defects such as weld cracks, air holes or gaps possibly generated in the machining process of the steel pipe are fully repaired; and the interface bonding strength and the corrosion resistance of chemical substances such as acid and alkali of the composite pipe are greatly improved, and longitudinal heat preservation and transverse heat transfer of the heating pipeline are facilitated.

The invention discloses an anti-corrosion coating method for a steel structure, belongs to the technical field of metal anti-corrosion coating, and solves the problems of reduced anti-corrosion effect and short maintenance period caused by incomplete pretreatment, insufficient coating adhesive force and poor complex environment adaptability in the existing anti-corrosion coating process for the steel structure. According to the technical scheme, the method is characterized by comprising the steps that the surface of the steel structure is pretreated through chemical oil removal, sand blasting and acid pickling and phosphating; epoxy zinc-rich primer, epoxy micaceous iron oxide intermediate paint and polyurethane finish paint are sequentially sprayed, and plasma treatment is introduced in the coating of each layer so as to enhance the interface bonding force of the coating; the uniformity and the corrosion resistance of the coating are optimized by regulating and controlling spraying parameters, plasma processing power and a gas ratio; and finally, a gradient heating curing process is adopted, so that the compactness and durability of the coating are ensured. The method is mainly used for long-term anti-corrosion protection of steel structures such as bridges and buildings, and the anti-corrosion performance and the service life in a complex environment can be remarkably 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 belongs to the field of electrode paste preparation, and provides low-temperature curing silver-coated copper paste for a heterojunction solar cell and a preparation method of the low-temperature curing silver-coated copper paste. Ethyl cellulose is adopted as a matrix material, a stable matrix network is provided for slurry through good cohesiveness and dispersity of ethyl cellulose, and a network structure with a high crosslinking degree is formed by adding modified phenolic resin, organic silicon modified epoxy acrylate and other chemical modification materials into the slurry. The mechanical strength and adhesive force of the slurry are further enhanced, surface modification is carried out on inorganic filler such as silver-coated copper powder and bismuth oxide through a silane coupling agent and a titanate coupling agent, and the interface bonding force between the filler and an organic matrix is enhanced through silicon-oxygen bonds formed on the surface of the filler; by adding the carboxylated polyamide wax and the organic bentonite, the agglomeration tendency of the filler is reduced by utilizing the adsorption and electrostatic repulsion effects of the carboxylated polyamide wax and the organic bentonite on filler particles, and the obtained conductive slurry has the characteristics of excellent conductivity and low-temperature rapid curing.

The invention discloses a crosslinked polyethylene reinforced high-strength insulating aerial cable, and belongs to the technical field of crosslinked polyethylene cable materials.The crosslinked polyethylene reinforced high-strength insulating aerial cable is prepared by the steps that hydroxyl is introduced to nano boron nitride powder, then amino is grafted through KH-550, nano alpha-Al2O3 powder is modified through gamma-glycidyl ether oxypropyl trimethoxy silane, and the cross-linked polyethylene reinforced high-strength insulating aerial cable is obtained; the preparation method comprises the following steps: preparing low-density polyethylene, compounding the low-density polyethylene with aminated nano boron nitride powder to form nano composite powder, improving the interface bonding force between the low-density polyethylene and the nano composite powder, carrying out melt blending on the low-density polyethylene and the nano composite powder to improve the dispersity of the nano composite powder in the low-density polyethylene, and carrying out nucleophilic acyl substitution reaction to obtain a fluorine-containing modified monomer. The nano boron nitride powder and the nano alpha-Al2O3 powder are subjected to a cross-linking reaction under the initiation action of an initiator and then coat the exterior of the thermal insulation layer, and the nano boron nitride powder and the nano alpha-Al2O3 powder are bridged through siloxane bonds to form a three-dimensional heat-conducting network, so that the heat resistance of the outer insulating layer is improved.

The invention provides a coated modified high-nickel ternary positive electrode material, a preparation method and a lithium ion battery, the coated modified high-nickel ternary positive electrode material comprises a high-nickel ternary matrix and a coating layer containing an oxide solid electrolyte, the coating layer is coated outside the high-nickel ternary matrix and accounts for 1%-3% of the mass of the high-nickel ternary matrix; the oxide solid electrolyte comprises Li < 3x > La < 2 / 3-x > TiO < 3 > (0 lt; x < = 0.16), Li < 7 > La < 3 > Zr < 2 > O < 12 >, Li < 1 + y > Al < y > Ti < 2-y > (PO < 4 >) < 3 > (0 lt; y < = 0.5); the ionic conductivity of the oxide solid electrolyte is greater than or equal to 1 * 10 <-4 > S / cm. The selected oxide solid electrolyte has high ionic conductivity and electronic insulativity, a rapid lithium ion transmission channel can be provided, interface side reaction can be inhibited, the rate capability and the cycling stability of the material can be remarkably improved, and when the oxide solid electrolyte forms a coating layer, the coating layer is not prone to deformation, and the service life of the material is prolonged. The interface bonding strength with a high-nickel ternary matrix can be improved through chemical bonding, the interface impedance can be remarkably reduced, and the dynamic performance of the material is improved.

The invention discloses a plastic hollow plate and a manufacturing method thereof, the plastic hollow plate comprises the following components by weight: 30%-60% of a polypropylene matrix and 40%-70% of phosphogypsum powder, and polypropylene provides thermoplastic formability and toughness. The preparation method specifically comprises the following steps: 1) pretreating ardealite; 2) melt blending granulation; (3) forming a hollow plate; and 4) post-processing. The ardealite hollow plate has the advantages that the ardealite filling amount is increased, meanwhile, the bending strength and impact strength of a traditional hollow plate are improved, and the performance is improved by 20% or above compared with that of a traditional hollow plate with the same filling amount; the moisture content of the pretreated phosphogypsum is less than 6%, so that bubbles in the processing process are avoided, and the interface bonding strength is improved; the comprehensive utilization rate of industrial byproduct phosphogypsum is improved, and the production cost is reduced.

The invention discloses water-based wear-resistant ink and a preparation method thereof, and belongs to the technical field of ink. The ink is prepared from the following components in parts by weight: 20 to 35 parts of waterborne polyurethane resin, 15 to 25 parts of waterborne acrylic resin with an acid value of 40 to 80 mg KOH / g, 5 to 15 parts of KH570 silane coupling agent modified nano aluminum oxide, 3 to 8 parts of polyethylene wax emulsion, 10 to 20 parts of pigment and auxiliaries. The preparation method comprises the following steps: firstly, carrying out surface modification on the nano aluminum oxide by using KH570, and then mixing, dispersing and grinding all the components. Through the synergistic effect of the acrylic resin with a specific acid value and the modified nano aluminum oxide, the problem that nano particles are easy to agglomerate in a system is solved, the nano particles can be stably dispersed, and the interface bonding with the resin is enhanced, so that the ink is endowed with excellent adhesive force, wear resistance and storage stability while the process is simplified and the cost is reduced; the BOPP film packaging material is especially suitable for BOPP film packaging materials.

The invention provides an anti-icing type self-falling umbrella skirt structure and a power transmission line insulator. An umbrella skirt comprises a main umbrella skirt force bearing layer, a plurality of groups of deformation function layers which are circumferentially distributed and installed on the upper end face of the main umbrella skirt force bearing layer, and a hydrophobic layer which coats the top of the deformation function layer. Through interface strengthening design and a multi-scale deicing mechanism, the influence of low temperature and deformation stress on interface bonding strength and durability is reduced, and the effective service life of the insulator is prolonged; and through microcosmic and macroscopic cooperation, the deicing efficiency is improved, and self-falling of the ice layer is achieved.

The invention relates to the technical field of materials, and discloses an antibacterial composite pp material and a preparation process thereof.The antibacterial composite pp material is prepared from polypropylene as a main raw material and a compatilizer, a functional fiber modified additive, a rubber additive and the like as auxiliary materials through mixing and extrusion granulation processes. Wherein the functional fiber modified additive is medical stone fiber of which the surface is modified with a reactive macromolecular antibacterial agent, and the reactive macromolecular antibacterial agent can interact with a maleic anhydride group in a compatilizer structure in a subsequent melt extrusion process, so that the interface bonding performance between the medical stone fiber and polypropylene is greatly improved; further, the reinforcing effect of the medical stone fiber is fully exerted, so that the mechanical strength of the polypropylene material is effectively improved. In addition, triclosan in the structure of the macromolecular antibacterial agent has a broad-spectrum antibacterial effect, so that the polypropylene material can be endowed with excellent broad-spectrum antibacterial performance.

The invention discloses a multi-layer gradient composite polyethylene lining hose and a microwave triggering repairing method thereof, the multi-layer gradient composite polyethylene lining hose comprises a self-repairing functional layer, a reinforcing framework layer, an interface bonding layer and an outer protective layer which are sequentially compounded from inside to outside, and the invention relates to the technical field of pipeline repairing. According to the multi-layer gradient composite polyethylene lining hose and the microwave triggering repairing method thereof, through combination of a multi-layer gradient composite structure (a self-repairing layer, a reinforcing framework and a gradient interface) and a microwave triggering repairing technology, three major breakthroughs are achieved: 1) the service life of a pipeline is prolonged to 50 years (the self-repairing efficiency is greater than or equal to 85%); (2) the repairing efficiency is improved by 3 times (DN1000 pipe is less than or equal to 8 hours), (3) the energy consumption is reduced by 70% (microwave directional curing), an intelligent monitoring system (optical fiber sensing and AI analysis) ensures the construction precision (the gap is less than or equal to 2 mm), high strength (the ring stiffness is SN12 grade), low emission (the carbon emission is reduced by 65%) and wide applicability (DN300-DN3000) are achieved, and a traditional pipeline repairing mode is thoroughly innovated.

The invention discloses a high-strength nano composite stiffening filling master batch and a preparation method thereof, and relates to the technical field of high polymer materials, the raw materials comprise a nano filler, a matrix material and a functional additive; the nano filler comprises nano diamond, nano silicon carbide and bio-based nano cellulose, the base material comprises polyimide, polyether-ether-ketone and bio-based polylactic acid, and the functional additive comprises a hindered phenol antioxidant, a nano aluminum hydroxide flame retardant, a nano silicon dioxide reinforcing agent, an ultraviolet light absorber, a carbon nano tube and nano silver particles. Nano-diamond, nano-silicon carbide and bio-based nano-cellulose are adopted as nano-fillers, polyimide, polyether-ether-ketone and bio-based polylactic acid are combined as base materials, and a plurality of functional additives are added, so that the preparation of the high-strength nano-composite stiffening filling master batch is realized; and the problems of poor dispersibility, mechanical property damage, insufficient hardness and poor interface bonding of the traditional filler master batch can be solved.

The invention belongs to the technical field of radar stealth materials and high-temperature electromagnetic protection, and particularly relates to design and a preparation method of a high-temperature-resistant wave-absorbing material based on alumina fibers. According to the material, a high-temperature-resistant ceramic precursor serves as a base body, a reinforcing phase is formed by alternately stacking alumina fiber cloth and an alumina fiber web tire containing chopped silicon carbide fibers, and a three-dimensional reinforcing structure is formed through a needling technology; the chopped silicon carbide fibers are directionally distributed in the net tire in a non-uniform mode, an enhanced area array with the local geometric regular pattern is constructed, the size and the arrangement period change in a gradient mode in the thickness direction, a vertical dielectric gradient structure is formed in the material, and multi-path propagation, reflection and polarization loss of electromagnetic waves are improved; the surface of alumina fiber cloth is coated with a ceramic interface layer, so that the interface bonding strength and thermal stability are improved; the ceramic matrix is densified for multiple rounds, so that the structure is compact; the material has excellent electromagnetic absorption performance, heat resistance and mechanical strength, and is suitable for high-temperature electromagnetic environments such as aerospace, missile bay sections and the like.

The invention provides a thermal interface material based on vinyl imidazole ionic liquid as well as a preparation method and application of the thermal interface material. The thermal interface material is prepared from the following raw materials: the vinyl imidazole ionic liquid, a heat-conducting filler subjected to surface treatment by a silane coupling agent, an initiator and a cross-linking agent. The thermal interface material is based on the vinyl imidazole ionic liquid and the heat-conducting filler, the limitation of a traditional thermal interface material base body is broken through, dispensing can be achieved, no solvent is needed in the preparation process, the adverse effect of solvent residues on the performance of a chip when the thermal interface material is applied to the chip subsequently can be avoided, and the thermal interface material has ideal interface bonding strength; the heat conduction effect is remarkable and stable, the heat stability is good, the material can be well attached to an interface, the problems of stress concentration, cracks and the like are not prone to occurring, and the material can be widely applied to the heat conduction and heat dissipation fields of aerospace, advanced energy, electronic information, military industry and the like.

The invention relates to the technical field of sizing agents, in particular to a water-based sizing agent for fibers as well as a preparation method and application of the water-based sizing agent for the fibers, the water-based sizing agent for the fibers comprises a component 1, a component 2 and water, the component 1 is polyamide acid salt, and the component 2 is at least one of sulfonated polyamide and lignosulfonate; the water-based sizing agent for the fibers comprises the following components in parts by weight: 0.1-15 parts of a component 1, 0.1-15 parts of a component 2, 0.1-15 parts of a component 3, 0.1-15 parts of a component 4, 0.1-15 parts of a component 5, 0.1-15 parts of a component 5 and 0.1-15 parts of a component 6, 0.1 to 15 parts of a component 2; and 70 to 99.8 parts of water. According to the water-based sizing agent for the fibers, the interface bonding strength of the fibers and a polyamide matrix can be high.

The invention relates to the technical field of composite materials, in particular to a nano-montmorillonite reinforced unsaturated polyester resin based composite material and a preparation method thereof. Comprising the following raw materials in parts by weight: 60-85 parts of orthophthalic unsaturated polyester resin, 3-15 parts of nano montmorillonite, 1-5 parts of a polyfunctional group intercalator, 1-4 parts of an initiator, 0.5-2 parts of dimethylaniline and 0.5-3 parts of gamma-aminopropyltriethoxysilane. The polyfunctional intercalator interacts with interlayer ions and surface groups of the nano-montmorillonite through multiple functional groups of the polyfunctional intercalator, and is effectively inserted into the interlayer of the nano-montmorillonite, so that the interlayer spacing is obviously increased, and favorable conditions are provided for subsequent insertion and compounding of resin; the functional groups not only can chemically react with active groups of unsaturated polyester resin to form stronger chemical bonding, but also can enhance the interface bonding force between two phases through physical entanglement, so that the overall performance of the composite material is remarkably improved.

The invention relates to a silicon-carbon composite material with a porous structure and a preparation method thereof, and the silicon-carbon composite material with the porous structure comprises an N / P co-doped porous carbon skeleton with micropore, mesopore and macropore channel networks, and amorphous or low-crystalline nanometer silicon particles which are uniformly loaded in the porous carbon skeleton and have the average particle size of 15-40nm, the mass percent of silicon in the composite material is 40-60%, and good interface bonding is formed between silicon and carbon. The preparation method mainly comprises the following steps: firstly, preparing an N / P co-doped porous carbon skeleton through a template method in combination with high-temperature carbonization and N / P source co-pyrolysis; and hydrolyzing an organic silicon source in the carbon skeleton to form silicon dioxide, and performing low-temperature metal thermal in-situ reduction to obtain the nano-silicon loaded composite material. Through a unique porous carbon skeleton design and a precise in-situ composite strategy of nano silicon, the prepared material shows high specific capacity, high initial coulombic efficiency and excellent cycling stability and rate capability when being used as a negative electrode of a lithium ion battery.

The invention relates to the technical field of fan shell materials, in particular to an antibacterial PP (polypropylene) fan shell material and a preparation method thereof. The polypropylene composite material is prepared from the following components in parts by weight: 80 to 90 parts of polypropylene composite material, 1 to 3 parts of polyethylene glycol grafted maleic anhydride, 1 to 5 parts of modified lignin, 8 to 15 parts of nano modified montmorillonite, 1 to 4 parts of silver nitrate, 1 to 3 parts of coupling agent KH550, 0.1 to 0.5 part of calcium stearate and 0.3 to 0.6 part of antioxidant, through double modification of lignin and three-step modification of montmorillonite, the dispersity and interface bonding strength of the filler are remarkably improved, the tensile strength of the material is improved by 37% or above, and meanwhile good toughness is kept; a multi-component synergistic system realizes the persistence of the antibacterial performance, and the antibacterial efficiency of 95% or above is still kept after 7 days. Thirdly, through the synergistic effect of the modified lignin and the nano-montmorillonite, the thermal stability of the material is remarkably improved, and the initial degradation temperature is increased by 20-35 DEG C.

The invention discloses a high-toughness flame-retardant foaming type PVC wood-plastic plate and a preparation method thereof, and belongs to the technical field of building materials. The high-toughness flame-retardant foaming type PVC wood-plastic plate comprises the following components in percentage by mass: 30%-50% of PVC resin, 20%-40% of a polyurethane prepolymer, 5%-30% of wood fibers, 2%-10% of a nano filler, 2%-10% of a flame retardant, 1%-5% of a plasticizer, 0.5%-2% of a foaming agent and 0-1% of other auxiliaries, and the PVC resin and the polyurethane prepolymer form an interpenetrating network structure. According to the invention, the PVC resin and the polyurethane prepolymer are mixed according to a certain proportion to form a PVC / polyurethane interpenetrating network structure, which not only enhances the mechanical strength of the material, but also greatly improves the toughness and impact resistance of the material; the introduction of the nanofiller further enhances the interface bonding force and stress dispersion capability of the material.