397 results about "Nano tio2" patented technology

The invention discloses a high-temperature-resistant epoxy resin composite material and a preparation method thereof, and relates to the technical field of composite materials. The high-temperature-resistant epoxy resin composite material is prepared from the following raw materials in parts by weight: 70 to 80 parts of modified epoxy resin, 8 to 15 parts of high-temperature-resistant modifier, 15 to 30 parts of curing agent, 3 to 8 parts of nano reinforcing filler, 1 to 3 parts of coupling agent, 3 to 6 parts of carbon fiber, 2 to 5 parts of nano titanium dioxide, 5 to 10 parts of organic silicon rubber, 1 to 3 parts of conductive agent, 3 to 7 parts of flame retardant and 2 to 4 parts of zinc borate. The high-temperature-resistant epoxy resin composite material has outstanding advantages and strong thermal stability, and can bear high temperature; mechanical performance is excellent, and firmness and durability are achieved; the self-repairing capability is achieved, and the service cycle can be prolonged; the anti-permeability is good, and gas and liquid can be effectively blocked; the surface is smooth, the friction coefficient is low and the application prospect is wide.

The invention discloses ultra-high performance concrete and a preparation method thereof. The ultra-high performance concrete comprises the following components in percentage by mass: 15%-25% of cement, 3%-6% of nano SiO2, 30%-35% of fly ash or steel slag powder, 35%-40% of recycled aggregate, 1%-4% of fiber, 0.5% of a microbial remediation agent and 1%-3% of nano TiO2. The preparation method comprises the following steps: S1, pretreating the recycled aggregate; and S2, packaging the microbial remediation agent: mixing the bacillus pasteurii spores with calcium lactate, and wrapping the mixture in calcium phosphate microspheres. S3, step-by-step stirring; S3.1, dry mixing: uniformly stirring the cement, the fly ash, the nano SiO2, the nano TiO2 and the recycled aggregate; s3.2, wet mixing is carried out, water solution fibers containing the polycarboxylic acid water reducing agent are added, uniform stirring is carried out, and the water-binder ratio of the water solution containing the polycarboxylic acid water reducing agent is 0.18; s3.3, final mixing: adding the packaged microbial remediation agent, and uniformly stirring; and S4, directional curing: performing steam curing at 80 DEG C for 48 hours, performing ultraviolet irradiation, and performing constant-temperature and constant-humidity curing for 7 days. The ultra-high performance concrete has the effects of low cost, low carbon emission, multi-function integration and repeatable crack self-repairing.

The invention provides a sintered hollow batten for buildings and a preparation method, and belongs to the technical field of novel wall materials, the sintered hollow batten for buildings comprises the following raw materials: high-calcium fly ash, construction waste recycled aggregate, clay, sulphoaluminate cement, a foaming agent, reinforced fibers and an additive; wherein the particle size of the construction waste recycled aggregate is 0.5-5mm, and the construction waste recycled aggregate is subjected to plasma activation treatment; a nano TiO2 photocatalytic coating is loaded on the surface of the construction waste recycled aggregate; the reinforced fibers are composite fibers of basalt fibers and polypropylene fibers, and the mass ratio of the basalt fibers to the polypropylene fibers is (1: 1)-(1: 2). According to the sintered hollow batten for the building, the building waste recycled aggregate subjected to plasma activation treatment is adopted, and the nano titanium dioxide photocatalytic coating is loaded, so that the bonding strength of the aggregate is greatly improved, and the hollow batten is endowed with the function of degrading pollutants such as formaldehyde.

The invention relates to the technical field of high polymer material and polymer modification, in particular to modified asphalt based on nano material reinforcement and a preparation method, the modified asphalt comprises matrix asphalt subjected to molecular cutting and compounding, a nano titanium dioxide-graphene-carbon nano tube ternary composite material, zwitter-ion and silane synergistically modified nano montmorillonite, the rubber powder subjected to special treatment, the bio-based and traditional compound plasticizer and the 2-mercaptobenzimidazole and sulfur compound stabilizer are synergistically modified. The modified asphalt has the advantages of excellent performance, high-temperature stability, low-temperature crack resistance, strong aging resistance, efficient and environment-friendly preparation process, low energy consumption, short period and good nanometer material dispersion, and adopts the bio-based plasticizer to promote the green development of the asphalt industry.

The invention belongs to the technical field of building materials, and discloses a preparation method of reflective heat-insulation waterproof real stone paint, which comprises the following three process stages: core layer synthesis, shell layer loading and real stone paint integration: coating a continuous SiO layer on the surface of nano TiO in situ to form TiO-coated SiO particles; graphene quantum dots and a hindered amine light stabilizer are loaded on the surfaces of TiOatSiO particles to form a composite functional filler; adding the composite functional filler into the acrylic emulsion base material in batches at a low speed, and adjusting the rheological property with the aid to obtain a finished product. The preparation process disclosed by the invention is completely compatible with an existing real stone paint industrial production line, does not need to add special equipment, and has excellent reflective heat insulation, heat preservation, water resistance, weather resistance and aging resistance and large-scale industrial feasibility; the technical problems of resin oxidative degradation caused by TiO photocatalytic activity, rapid attenuation of solar radiation reflectivity, failure of waterproof and hydrophobic performance and easiness in damage and stripping of a coating structure of the existing nano TiO-based reflective heat-insulation real stone paint are solved.

The invention relates to a honeycomb catalyst for CO and NOx synergistic coupling removal and a preparation method, the catalyst takes nano TiO2-CeO2 as a carrier, and the surface of the carrier is loaded with an active component; the active component comprises a main catalyst and an auxiliary catalyst, the main catalyst is LaCuOx active powder, and the auxiliary catalyst is SmFeOx active powder. According to the present invention, the active material of the conventional catalyst is changed, and the carrier performance of the conventional catalyst is modified, such that the catalyst has good chemical activity and good thermal stability so as to achieve the purpose of stable and synergistic CO removal and NOx removal; meanwhile, the catalyst material is high in mechanical strength and long in chemical life, and the water resistance and the sulfur resistance of the catalyst material are also verified.

The invention relates to the technical field of sewage treatment, in particular to an electrostatic spinning PVDF nanofiber membrane for sewage treatment and a preparation method and application of the electrostatic spinning PVDF nanofiber membrane. The preparation method comprises the following steps: dissolving PVDF (Polyvinylidene Fluoride) particles in a mixed solvent of DMF (Dimethyl Formamide) and acetone, adding nano TiO2 particles subjected to APTES (Aminopropyltriethoxysilane) surface modification, and adding PVP (Polyvinyl Pyrrolidone) into the solution to obtain a uniform spinning solution; spinning by adopting electrostatic spinning equipment to obtain a PVDF / TiO2 / PVP nanofiber membrane; the nanofiber membrane is soaked in a sodium hydroxide solution, then the membrane is soaked in a Tris-HCl buffer solution containing dopamine, and the final electrostatic spinning PVDF nanofiber membrane is obtained. The average diameter of nanofibers of the nanofiber membrane is 200-300nm, the porosity of the membrane is 70-80%, and the water contact angle is less than 60 degrees; when the nanofiber membrane is used for treating sewage containing organic pollutants and heavy metal ions, the removal rate of the nanofiber membrane on methyl orange can reach 95% or above; the rejection rate of copper ions can reach 90% or above; the removal efficiency of organic pollutants and heavy metal ions is obviously improved.

The invention discloses a high-transparency PVB intermediate film and a production process and application thereof, and relates to the technical field of PVB intermediate films, the high-transparency PVB intermediate film comprises the following raw materials by weight: 100 parts of PVB resin, 20-30 parts of a composite plasticizer, 0.5-0.9 part of an LDH-based composite antioxidant, 0.5-1 part of an ultraviolet light absorber, 0.1-1.5 parts of nano lanthanum hexaboride, 0.1-1.5 parts of porous hollow nano copper sulphide, and 0.1-2 parts of nano TiO2 / SiO2 core-shell particles. The PVB intermediate film provided by the invention is relatively high in light transmittance, low in haze value, and excellent in oxidation resistance, weather resistance and mechanical strength.

The invention discloses an interface enhancement gradient design method of an anti-impact aviation glass laminated structure, and relates to the technical field of composite material design, the method comprises the steps of glass material preparation, interface enhancement gradient design, lamination compounding, quality detection and performance testing, the glass material comprises a glass layer material, a middle layer material and a transition layer material, the laminated composite process comprises the steps of pre-strain treatment, pre-pressing treatment, hot-pressing combination and cooling demolding, and has the advantages that by arranging the transition layers with components and performance in gradient change, the content of reinforcing materials such as nanometer titanium dioxide particles and graphene nanosheets in each transition layer is gradually increased; and compared with a traditional uniform or simple layered structure, the gradient design has the advantage that the phenomenon of interface stress concentration caused by performance difference between the glass layer and the polymer intermediate layer is remarkably reduced.

The invention belongs to the technical field of granary building coatings, and provides a composite aerogel granary heat preservation and insulation coating as well as a preparation method and a use method thereof. The coating comprises a reflective coating, a heat-insulating coating and a weather-resistant coating, the reflective coating is prepared from water-based acrylic resin, rutile type nano titanium dioxide, hydrophobic silicon dioxide aerogel, an auxiliary agent and water; the heat insulation coating comprises hollow ceramic microbeads, epoxy resin, a polyamide curing agent, nano diatomite, hydrophobic aerogel powder and polyether modified silicone oil; the weather-resistant coating is prepared from organosilicone acrylic resin, nano aluminum oxide, an ultraviolet light absorber and a water-based flatting agent. Through the gradient design of the reflecting layer (visible light reflection), the thermal insulating layer (infrared barrier) and the weather-proof layer (environmental protection), the unification of spectrum selective regulation and control and long-acting protection is realized; the thermal insulation coating is easy to construct, and the construction viscosity is adjusted by adjusting the use amount of water, so that the thermal insulation coating adapts to different construction conditions and process requirements.

The invention discloses sulfate-erosion-resistant metakaolin-slag-based geopolymer concrete, belongs to the technical field of concrete, and aims to solve the problems that the corrosion resistance of traditional silicate concrete is ineffective and the adaptability of conventional alkali-activated concrete is insufficient in a special environment. The concrete comprises the following components in parts by weight: 60-90 parts of a cementing material, 120-170 parts of aggregate, 15-30 parts of a composite activator, 2-8 parts of a function regulator and the like, the cementing material is prepared from nano TiO2 / KH-550 composite modified metakaolin, slag and silica fume-coal gangue powder-HAP composite powder; the aggregate comprises modified limestone macadam (soaked and dried by a sodium dihydrogen phosphate solution) and river sand; the composite exciting agent comprises water glass, sodium hydroxide, sodium pyrophosphate, propylene glycol and the like; the function regulator comprises superfine fly ash, a naphthalene water reducer, HPMC (Hydroxy Propyl Methyl Cellulose) and boric acid. Through the synergistic effect of the components, the sulfate corrosion resistance, the mechanical property and the environmental adaptation performance of the concrete are improved, and the concrete is suitable for engineering construction under the service environment of high-concentration sulfate and the like.

The invention relates to the technical field of aramid fibers, in particular to a high-strength modified meta-aramid fiber and a preparation method thereof. The meta-position aramid fiber overcomes the problem that the meta-position aramid fiber is poor in mechanical property and ultraviolet resistance. The preparation method comprises the following steps: taking MPD and DDS as diamine solids to react with IPC in a polymerization solvent to generate PMIA; the preparation method comprises the following steps: carrying out surface activation treatment on BNNS to prepare f-BNNS; the preparation method comprises the following steps: carrying out surface grafting and activating treatment on TiO2 to prepare ultraviolet-resistant nano TiO2; pMIA, the composite nano suspension and DDSM are mixed in NMP and defoamed to prepare a modified polymer spinning solution, and the high-strength modified meta-aramid fiber with good mechanical properties and ultraviolet resistance is obtained through dry spraying-wet spinning, gradient cleaning, three-stage hot stretching, heat setting, hot drying and rolling.

The invention relates to the technical field of coating processing, in particular to a high-heat-insulation nanometer silicon heat preservation coating and a preparation method thereof.The high-heat-insulation nanometer silicon heat preservation coating is specifically prepared from, by weight, 15-23 parts of silicone acrylic emulsion, 12-15 parts of nanometer titanium dioxide, 2-5 parts of auxiliaries, 15-23 parts of heat insulation aerogel, 50-58 parts of functional filler and 3-4 parts of propylene glycol. According to the invention, the specially prepared heat insulation aerogel is introduced into the nano silicon coating, so that the heat insulation performance of the coating can be effectively improved, the resistance of the coating to stress can be improved, the cracking phenomenon of the coating can be effectively reduced, the service life of the coating can be prolonged, and meanwhile, the surface roughness of the coating can be remarkably improved; the contact area between the coating and the three-dimensional pattern playing a role in beautifying on the surface of the water cup is increased, so that the bonding strength between the coating and the three-dimensional pattern is improved, the three-dimensional pattern can be kept on the water cup for a long time, and the use experience is improved.

The invention provides a heat insulation and energy storage polylactic acid-based composite material, the polylactic acid-based composite material is a three-layer composite material, and comprises a surface layer, an energy storage layer and a heat conduction buffer layer, the surface layer comprises high-crystallinity polylactic acid, mesoporous SiO2, micron hollow glass beads, nano TiO2, nano ZnO and an antioxidant 1010, the energy storage layer comprises low-crystallinity polylactic acid and phase change microcapsules, and the heat conduction buffer layer comprises a heat conduction buffer layer. The composite material comprises polylactic acid, hydroxylated carbon nanotubes, polycaprolactone, tributyl citrate and an antioxidant 1010, and the composite material comprises medium-crystallinity polylactic acid, hydroxylated carbon nanotubes and polycaprolactone. The polylactic acid-based composite material prepared by the preparation method disclosed by the invention realizes the balance of heat insulation, energy storage and mechanical properties.

The invention relates to the technical field of dielectric ceramic powder preparation processes, in particular to a multilayer ceramic capacitor, high-activity nano barium titanate powder for the multilayer ceramic capacitor and a preparation method of the high-activity nano barium titanate powder, and the method comprises the following steps: (1) reacting soluble barium salt with a precipitator to obtain barium carbonate precursor particles with high specific surface area; (2) uniformly coating the surfaces of the barium carbonate precursor particles with nano titanium dioxide particles by using a supercritical fluid flash evaporation technology to form a composite precursor; and (3) carrying out solid-phase synthesis reaction on the composite precursor, and sintering to obtain the nano barium titanate powder. Through the synergistic effect of two means of high-activity precursor preparation and nanoscale uniform coating, the composite precursor with extremely high specific surface area, surface energy and microcosmic uniformity is prepared, the thermal sintering temperature is effectively reduced, abnormal growth of crystal grains and lattice distortion are restrained, and the preparation method has the advantages that the preparation process is simple, and the preparation cost is low. The tetragonality of the nano barium titanate powder is obviously improved.

The invention discloses a polyurethane modified polytetrafluoroethylene ink formula and a preparation method thereof, and relates to the technical field of polytetrafluoroethylene processing, and the preparation method comprises the steps of raw material collection and preparation, auxiliary agent mixing, formula optimization and reaction post-treatment. The invention discloses a graphene quantum dot-modified waterborne polyurethane pigment which comprises the following raw materials: waterborne polyurethane, modified polytetrafluoroethylene, a pigment, nano titanium dioxide, a carbon nanotube, a dispersing agent, a toughening agent, a fluorosilicone modified acrylate emulsion and a cross-linking agent. The graphene quantum dot-modified waterborne polyurethane pigment has the advantages that graphene quantum dots are added in a pigment treatment link, and excellent optical performance of the graphene quantum dots is utilized, so that the dispersity of the pigment is remarkably improved; by adding the graphene quantum dots, the color saturation of the ink is improved, the printing color is brighter and more durable, the graphene quantum dots can enable the ink to have certain antistatic performance, the problems of ink dot splashing, pattern blurring and the like caused by static electricity in the printing process are effectively avoided, and the printing quality is improved; the surface hydrophobicity, the wear resistance and the chemical stability of the ink can be improved.

The invention discloses organic silicon modified acrylic resin antifouling paint and a preparation method thereof, and particularly relates to the field of chemical paint. The antifouling paint is prepared from the following components in parts by mass: 8 to 12 parts of adamantane acrylate, 5 to 8 parts of trifluoroethyl acrylate, 2 to 3 parts of 2-hydroxyethyl acrylic phosphate, 0.8 to 1.2 parts of tert-butyl peroxypivalate, 4 to 6 parts of tridecafluorooctyltrimethoxysilane, 1 to 2 parts of isophorone diisocyanate, 3 to 6 parts of fluorosilane modified nano TiO2 and 1 to 2 parts of graphene oxide. 20-30 parts of deionized water, 0.5-1 part of a polyether modified polysiloxane defoaming agent, and 0.3-0.5 part of an ultraviolet light absorber UV-327 can be additionally added. The preparation method comprises the following steps: S1, preparing isocyanate modified fluorine-containing organic silicon; s2, preparing a ternary copolymer prepolymer; s3, preparing a modified resin matrix; s4, preparing a fluorosilane modified nano TiO2 / graphene oxide composite filler dispersion liquid; and S5, mixing the resin matrix and the dispersion liquid, and performing stirring and vacuum desolventizing to obtain a finished product. The coating has the characteristics of super-hydrophobicity, high hardness, strong adhesion, long-acting antifouling property, aging resistance and environmental protection.

The invention relates to a protective material for building decorative boards, which comprises 55-60% of a main film-forming system, 8-10% of a nanometer functional filler, 12-15% of a functional auxiliary agent, and 15-35% of a carrier and a conditioning agent, and the construction steps of the protective material for building decorative boards comprise base material pretreatment, coating construction, curing and quality inspection. According to the protective material for the building decorative plate and the construction method, the fluorocarbon modified acrylic resin and the organic silicon-acrylic hybrid emulsion are adopted for upgrading a base material, the nano titanium dioxide is added to realize ultraviolet shielding, the graphene is added to realize crack propagation resistance, the weather resistance of the material is improved, the deionized water is used for replacing a traditional solvent, and the cost is reduced. The self-cleaning capacity can be improved by adding hydrophobic nano silicon dioxide, silicon dioxide is added into an intumescent flame-retardant system to serve as a physical anchoring point, and the flame-retardant property of the material is further improved.

The invention belongs to the technical field of high polymer materials, and particularly relates to a self-repairing paint surface protection film based on asynchronous curing. The self-repairing paint surface protection film comprises a UV curing layer, a thermocuring layer and a base film, the thermocuring layer is positioned between the base film and the UV curing layer; the thermocuring layer is prepared from the following components: Zn-MOFs (Metal-Organic Frameworks) modified polycarbonate polyol resin and isocyanate; the UV curing layer is prepared from the following components: a fluorine-containing acrylate oligomer, KH-560 modified nano TiO2 and a photoinitiator; furthermore, the thermocuring layer further comprises a microencapsulation repairing agent. Correspondingly, the invention further provides a preparation method of the self-repairing paint surface protection film based on asynchronous curing. Self-repairing and weather resistance of the protective film are compatible, the problem that a single curing coating or a traditional synchronous curing coating cannot give consideration to self-repairing, weather resistance, water resistance, stain resistance and mechanical properties is solved, the highest elongation at break is larger than or equal to 320%, and the elongation at break is remarkably improved compared with the elongation at break of a single thermocuring system.

The invention relates to the technical field of ceramic-based composite material preparation, in particular to an aluminum oxide-based refractory ceramic composite material and a preparation method thereof.The aluminum oxide-based refractory ceramic composite material is prepared from, by mass, 80-90 parts of modified aluminum oxide, 5-10 parts of modified nano zirconium oxide suspension liquid and 3-5 parts of nano titanium dioxide sol, according to the invention, material component modification, interface structure design and gradient protection technology are optimized, compatibility of a matrix and a reinforced phase is cooperatively regulated and controlled, and low-temperature presintering and surface functionalization treatment technologies are improved, so that thermal shock resistance stability, high-temperature strength retention rate and chemical erosion resistance of the material are improved; the refractory material has excellent durability, provides a new solution for high-performance and engineering application of the refractory material, and has a wide application prospect.

The invention discloses a self-repairing graphene-based wind driven generator blade protection film and a preparation method thereof, and relates to the technical field of wind power generation equipment protection. The protection film adopts a gradient structure of a bonding buffer layer, a self-repairing functional layer and a multifunctional protection layer; the self-repairing functional layer comprises a hybrid network formed by hydroxylated functionalized graphene and elastomer particles and bionic packaging microcapsules, inner layer capsules containing graphene quantum dot reinforced resin and a latent catalyst curing agent are packaged in the microcapsules, multiple times of repairing of the same damaged area can be achieved, and the repairing strength is high; the multifunctional protective layer endows the coating with super-hydrophobic, anti-icing and ultraviolet-resistant functions through fluorinated graphene and nano TiO2 (at) ZnO composite particles; the preparation process is mature, the comprehensive protection performance is excellent, and the coating is suitable for wind driven generator blade protection in the severe environment.

The invention discloses an antibacterial wood coating based on water-based macromolecule combination. The antibacterial wood coating comprises the following components: a water-based macromolecule matrix, nano-silver particles, nano-copper particles, nano-titanium dioxide, a propolis extract, a dispersing agent, a surfactant, an antioxidant, an organic silicon compound, an ultraviolet light absorber, sodium polyacrylate, a cross-linking agent and deionized water. According to the antibacterial wood coating based on water-based macromolecule combination, the technical problems of stability, antibacterial effect, environmental friendliness, multifunctionality and the like of the antibacterial wood coating are solved, and an efficient, lasting and environment-friendly solution is provided.

The invention discloses a circulating water purification treatment process for heat exchange equipment, and relates to the technical field of circulating water purification treatment, and the circulating water purification treatment process comprises the following steps: preparing a polyaspartic acid-silane functionalized grafting intermediate; selecting a porous zeolite matrix, and performing acid activation treatment; the preparation method comprises the following steps: preparing a zeolite matrix, soaking the zeolite matrix in sol, standing, defoaming, heating and calcining to obtain a nano TiO2 coated zeolite matrix of which the surface is coated with nano titanium dioxide; immersing the nano TiO2 coated zeolite matrix into the solution, adjusting the pH value of the solution, and stirring for reaction to obtain a PASP functionalized zeolite filter material; and immersing the PASP functionalized zeolite filter material into a silver nitrate solution, carrying out photocatalytic reduction, and carrying out in-situ reduction and deposition on silver ions to obtain the silver / titanium dioxide-polyaspartic acid synergistic functionalized composite filter material. The composite filter material with synergistic functions realizes efficient scale inhibition and sterilization and rapid purification, shows excellent stability and durability under severe working conditions of high temperature, long period and the like, and is environment-friendly and low in maintenance cost.

The invention relates to the technical field of pearl wool composite materials, in particular to a polyethylene polymer environment-friendly pearl wool composite material and a preparation method thereof.The polyethylene polymer environment-friendly pearl wool composite material comprises, by weight, 40-70 parts of polyethylene polymer, and HDPE, MDPE and LLDPE are mixed according to a specific proportion; carrying out plasma treatment on 20-50 parts of pearl wool particles to introduce polar groups; the environment-friendly plasticizer is formed by compounding TBC and ATBC; 5-15 parts of degummed natural plant fibers for enhancing the binding force; 1-5 parts of nano titanium dioxide can be used for photocatalytically degrading pollutants; the 0.5-3 parts of antistatic agent is compounded by GMS and EAA, so that static accumulation is reduced; all the components have a synergistic effect, so that the material has various excellent properties. The composite material disclosed by the invention is good in environmental protection property, and air can be purified by using the environment-friendly plasticizer, the natural fibers and the nano titanium dioxide; the performance is excellent, and the buffering performance, the antistatic performance, the heat preservation performance and the flame-retardant performance are good. The preparation process is stable and efficient, can meet the requirements of multiple fields such as packaging, building and automotive trim, and has a wide prospect.

The invention discloses an aluminum anodic oxidation electrolyte for improving the adhesion density of an electrode foil oxidation film, and relates to the technical field of anodic oxidation, the electrolyte comprises 3%-10% of ammonium dihydrogen phosphate, 0.5%-3% of sulfuric acid, 0.01%-0.2% of nano titanium dioxide or nano aluminum oxide, 0.05%-0.5% of an organic buffer agent, and the balance deionized water; the organic buffering agent is used for stabilizing the pH value in a range of 4.5-6.0; nano titanium dioxide or nano aluminum oxide is used as an oxidation film nucleation center to promote directional crystallization of gamma '-Al2O3; the sulfuric acid component improves the conductivity of the electrolyte; ammonium dihydrogen phosphate generates an aluminum phosphate barrier layer on the surface layer of the oxidation film to enhance the waterproof performance of the film layer; according to the electrolyte, the adhesion density and crystallinity of an oxidation film can be remarkably improved, the uniformity and waterproof performance of a film layer are improved, the specific volume stability and the formation efficiency are improved, and the electrolyte is suitable for continuous production of the high-performance aluminum electrolytic capacitor.

The invention discloses a non-oriented silicon steel composite material and a preparation method thereof.The method comprises the steps that powder of Ce, La and Y elements is subjected to ball milling, and ground powder with the particle size smaller than or equal to 8 micrometers is obtained; adding 0.5-1.2 wt% of nano TiO2 as a modifier into the ground powder, and uniformly depositing a rare earth composite layer on the surface of a non-oriented silicon steel substrate by adopting a magnetron sputtering method to obtain a silicon steel plate; stacking the multiple layers of silicon steel plates to form a laminated layer; zirconia sol is coated on interlayer contact surfaces of the multiple layers of silicon steel plates; standing at a preset temperature for a preset period of time, so that gelation-dehydration-inorganic conversion of the zirconium oxide sol layer is completed, and an assembled silicon steel plate is obtained; and carrying out post-treatment on the assembled silicon steel plate to obtain the non-oriented silicon steel composite material. The magnetic performance, the mechanical toughness and the low-temperature service reliability of the non-oriented silicon steel material are improved.

The invention relates to the technical field of electro-catalytic material synthesis, in particular to a preparation method of a nano TiO2 (at) AC (at) GPs electro-catalytic anode material, which comprises the following steps: firstly, depositing an amorphous carbon layer AC on the surface of graphite flake GPs by adopting a chemical vapor deposition method to obtain an AC (at) GPs composite material; cTAB is dissolved in a methanol / deionized water mixed solution and stirred evenly to obtain a solution A, a titanium sulfate solution is added into the solution A to obtain a precursor solution B, the precursor solution B and the AC (at) GPs composite material are mixed and then subjected to a hydrothermal reaction, after the reaction, a sample is washed, dried and roasted, and the nano TiO2 (at) AC (at) GPs electrocatalytic anode material is obtained. The preparation process is simple and efficient, the obtained nano TiO2 (at) AC (at) GPs electro-catalytic anode material has excellent electro-catalytic activity and cycling stability, the problems that a traditional graphite anode material is poor in electro-catalytic performance and the like are solved, and the nano TiO2 (at) AC (at) GPs electro-catalytic anode material has wide industrial application prospects.

The invention relates to the technical field of polymer composite materials, in particular to a cable polymer composite material for a wind turbine blade, which is prepared from the following raw materials in parts by weight: a polymer base material; a reinforcing material; a polymer modified material; a functional additive; a performance modifier; the functional additive is prepared from an anti-ultraviolet agent, an antioxidant, a silane coupling agent and nano titanium dioxide. According to the invention, the epoxy modified polyether-ether-ketone and bisphenol A epoxy resin compounded base material is matched with a continuous glass fiber, carbon fiber chopped strand and nano silicon nitride multi-element reinforcing system, so that the core short board of insufficient mechanical properties of the traditional material is thoroughly solved, and a magnesium hydroxide, aluminum hydroxide, expanded graphite and nano montmorillonite compounded flame-retardant system is also selected, so that the flame-retardant performance of the material is greatly improved. The flame-retardant cable material is high in flame retardance, free of toxic gas release, capable of meeting the environment-friendly requirement, capable of improving the material interface bonding force and long-term service reliability and capable of meeting the requirement for the service life of 20 years or above of wind power blade cables.

The invention relates to the field of high polymer materials, and discloses an antistatic polyether-ether-ketone composite material for semiconductor devices, the antistatic polyether-ether-ketone composite material comprises the following raw materials by weight: 60-70 parts of polyether-ether-ketone, 20-30 parts of polyetherimide, 3-5 parts of modified carbon nanotubes, 2-4 parts of nano core-shell particles, 0.5-1 part of a coupling agent, and 0.2-0.5 part of an antioxidant; the modified carbon nanotubes are obtained by acidizing carbon nanotubes and grafting imidazolyl quaternary ammonium salt on the surfaces of the acidized carbon nanotubes; according to the antistatic polyether-ether-ketone composite material, through blending of polyetherimide, the melt viscosity of a composite system can be reduced, the problems that polyether-ether-ketone is high in processing temperature and poor in flowability are solved, and the antistatic performance of the composite material is improved. Through the synergistic interaction of the added modified carbon nanotubes and nano core-shell particles, the material is endowed with excellent mechanical properties, wear resistance and antistatic properties.

The invention relates to the technical field of adsorption materials, and provides an imprinted porous polymer adsorption material as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking rubidium ions as template ions and nano TiO2 / Fe3O4 as a composite carrier, carrying out silanization surface modification, coordinating crown ether-calixarene as a united functional monomer with the template ions, carrying out polymerization reaction through a cross-linking agent and an initiator to prepare a porous polymer, and eluting the template ions to obtain the imprinted porous polymer adsorption material. The imprinted porous polymer adsorption material provided by the invention can perform efficient selective adsorption on rubidium ions, is high in adsorption capacity and good in stability, and can realize efficient separation and enrichment of rubidium in a complex system. Meanwhile, the adsorption material can be recycled under the action of an external magnetic field, and rapid separation between the adsorbent and an adsorbed solution is achieved.