124 results about "Silicon dioxide nanoparticles" patented technology

The invention relates to the technical field of fire extinguishing microcapsules, in particular to a high-airtightness perfluorohexanone fire extinguishing microcapsule and a preparation method and application thereof.The perfluorohexanone fire extinguishing microcapsule comprises a composite shell layer and a fire extinguishing core, and the composite shell layer is made of ethylene-vinyl alcohol copolymer resin and silicon dioxide nanoparticles; the fire extinguishing core is a perfluorohexanone fire extinguishing agent and is applied to preparation of indoor fire extinguishing pastes, fireproof coatings and polyurethane adhesive materials. According to the perfluorohexanone fire extinguishing microcapsule disclosed by the invention, the diffusion of low-polarity perfluorohexanone is effectively prevented by utilizing the strong hydrogen-bond interaction between hydroxyl groups in the ethylene-vinyl alcohol copolymer resin, and especially under the condition of relatively high temperature, the perfluorohexanone fire extinguishing microcapsule has a good fire extinguishing effect. The problem that an existing perfluorohexanone fire extinguishing microcapsule is poor in long-term air tightness under the condition of high encapsulation efficiency is effectively solved, and meanwhile harmful substances such as formaldehyde cannot be generated.

The invention discloses a high-yield gastrodia elata planting method based on Tilia brachypoda fungus material optimization and seed ramie stress resistance activation. According to the high-yield gastrodia elata planting method based on Tilia brachypoda fungus material optimization and seed ramie stress resistance activation, yield increase and quality improvement are achieved through fungus material composite strengthening treatment and a composite strain synergistic inoculation technology. The method comprises the following steps: (1) fermenting a tilia brachypoda substrate by lactobacillus plantarum and soaking in a nano-composite nutrient solution to form a high-activity bacterial material; (2) nitrogen-fixing bacteria, disease-resistant actinomycetes and armillaria mellea are mixed and inoculated according to the proportion of 3: 1: 1, nitrogen supply is improved, and the occurrence rate of black rot is reduced; 3) activating a GASA stress-resistant gene of the seed hemp through a pulsed electric field (5 kV / cm, 10 microseconds), and enabling the germination rate to reach 88.5% in combination with a calcium signal channel strengthening technology; according to the method, the yield per mu of gastrodia elata is increased by 30%-40%, the gastrodin content is increased by 30% or above, the chemical pesticide dosage is reduced by 55%, the strain passage purity is stable, the method is suitable for large-scale planting in multiple climate areas, and an innovative solution is provided for green production of traditional Chinese medicinal materials.

The invention discloses a soft coal seam nanofluid fracturing propping material and a preparation method thereof.The soft coal seam nanofluid fracturing propping material is prepared from, by weight, 80-90% of a base material, 1-5% of a super-hydrophobic coating, 5-10% of a catalytic active component and 5-15% of a rheological enhancer, the base material is a compound of high-purity silicon dioxide nanoparticles and graphene nanosheets GNP, the particle size of the high-purity silicon dioxide nanoparticles is 50-200 nm, the super-hydrophobic coating is a fluorosilane modified layer, the thickness of the super-hydrophobic coating is 5-20 nm, and the invention relates to the technical field of coal bed gas exploitation. According to the soft coal seam nanofluid fracturing propping material and the preparation method thereof, the surface of the material is provided with a super-hydrophobic coating, friction force with a coal matrix is reduced, high embedding resistance is achieved, the flow conductivity is specifically enhanced, an extra flow channel is provided through a porous nanostructure, the fracturing fluid permeability is improved, and meanwhile gas desorption can be cooperated; catalytic active sites are introduced to the surface of the material to promote adsorption and diffusion of methane molecules.

The invention relates to the field of biomimetic materials, in particular to a biomimetic self-cleaning anti-fouling aquaculture net cage material, a preparation method and application of the biomimetic self-cleaning anti-fouling aquaculture net cage material. 0.5 to 2.0 parts by weight of a carboxylated graphene nanosheet; 2.0 to 5.0 parts by weight of nitrogen-doped titanium dioxide nanoparticles; 1.0 to 3.0 parts by weight of silica nanoparticles; 5.0 to 10.0 parts by weight of calcium ion cross-linked modified sodium alginate; 1.0 to 3.0 parts by weight of octadecyl trichlorosilane; 0.5 to 1.5 parts by weight of lauryl sodium sulfate; through the synergistic effect of a double bionic structure and enhanced photocatalysis, the effective inhibition on attachment of various organisms is realized, and the inhibition rate on attachment organisms such as algae, bacteria and barnacles reaches 75% or above.

The invention discloses a sheet deicing structure, a composite ice dredging coating and a preparation method thereof, and belongs to the technical field of wind power generation. The preparation method of the composite ice-dredging coating comprises the following steps: dispersing silicon dioxide nanoparticles in an organic solvent to form a nanoparticle dispersion liquid with the concentration of 1-10wt%; and then, adding low-surface-energy resin and a curing agent into the nano-particle dispersion liquid, and treating under the ultrasonic action and the ice-water bath condition to obtain the composite ice-dredging coating. In addition, the invention also provides the composite ice-dredging coating prepared by the preparation method. In addition, the invention further provides a blade deicing structure which sequentially comprises a surface anti-icing layer, a heating layer, a heat conduction layer and a structural layer from top to bottom. The surface anti-icing layer is made of the composite ice dredging coating. The composite ice dredging coating provided by the invention realizes effective ice prevention and removal of the blade.

The invention relates to the technical field of films, in particular to a preparation method and application of a waterproof and oil-proof ventilation valve for food packaging. The preparation method comprises the following steps: carrying out plasma activation treatment on the porous polytetrafluoroethylene-based membrane; preparing fluoroalkyl silane modified silicon dioxide nano particles; preparing fluorine-containing organic silicon-silicon dioxide sol containing vinyl; a cross-linking layer is constructed through vacuum impregnation; preparing a hydrophilic / hydrophobic comonomer solution; copolymerized chain grafting is initiated by ultraviolet light; and water-based fluorocarbon emulsion is sprayed on the surface for curing. The obtained breather valve has super-hydrophobic and oleophobic characteristics, keeps high air permeability and high water vapor permeability at the same time, has the air permeability retention rate exceeding 95% after 10 times of moist heat sterilization, and is suitable for balancing internal and external pressure and blocking water and oil phase liquid permeation in the high-temperature and high-pressure sterilization process of a food packaging container.

The invention discloses a medium-matte polyester film which is composed of a base material layer A, a surface matte layer B and a matte coating C sprayed on the outer side of the surface matte layer B. The base material layer A is composed of polyethylene glycol terephthalate and silicon dioxide nanoparticles. The surface matte layer B is composed of polyethylene glycol terephthalate, polytetrafluoroethylene and polyethylene glycol nanoparticles; the matte coating C is prepared from polyurethane acrylate, organic silicon silicon dioxide particles, triethylene glycol tripropoxy acrylate, benzophenone, polyether siloxane and polydimethylsiloxane. According to the medium-matt-degree polyester film, by optimizing the proportion of components such as PET, SiO2, PTFE and PEG, the good mechanical strength, wear resistance and matt effect are balanced, and the medium-matt-degree polyester film has excellent light transmittance and ultraviolet resistance. The film not only has low glossiness and high haze, but also shows excellent chemical resistance, scratch resistance and long-term stability, and is suitable for high-end applications such as polaroid release films and optical devices.

The invention discloses an electronic skin capable of realizing non-inductive, continuous and sensitive motion monitoring, and belongs to the field of flexible electronics and biomedical engineering. The electronic skin is mainly prepared from sodium alginate and acrylamide to form porous network gel, and the porous network gel is cross-linked to prepare the original porous base electronic skin; preparing solid-like coating paint from silicon dioxide nanoparticles, silicone oil and epoxy resin; the solid-like coating paint is uniformly sprayed on the surface of the original porous-based electronic skin through a spraying technology, and is cured to form the solid-like coating modified electronic skin. The electronic skin with the specific formula and thickness is prepared, and personalized, low-cost, portable, wireless, non-inductive, continuous and sensitive motion monitoring can be achieved.

The present application relates to the technical field of anti-adhesion packaging material research and development, and discloses an anti-adhesion liquid packaging film and a preparation process, which comprises the following steps: synthesizing octahexyl double-layer cyclic siloxane monomer, preparing an organic-inorganic hybrid type connecting agent through addition reaction of Si-H bonds of the octahexyl double-layer cyclic siloxane monomer and olefinic functional groups of an allyl silane coupling agent, modifying and treating hydroxylated silicon dioxide nanoparticles through the organic-inorganic hybrid type connecting agent, and then dispersing the hydroxylated silicon dioxide nanoparticles in a PE-SILICON-PE block copolymer matrix to prepare an anti-adhesion composite material; a film structure of a nine-layer co-extrusion film is arranged, the anti-adhesion composite material is introduced into the first layer and the ninth layer of the nine-layer co-extrusion film, and a nine-layer co-extrusion blown film process is used to prepare a packaging film with excellent anti-adhesion performance, which can be applied in the field of non-Newtonian liquid product packaging.

The invention discloses a nano composite ionic gel material with impact resistance and a preparation method thereof, and belongs to the field of polymer composite materials. The preparation method comprises the following steps: mixing and heating 5-methyl-2-isopropyl phenol and tetrabutylammonium tetrafluoroborate to prepare a solvent, adding isobornyl acrylate, hexafluorobutyl acrylate, KH570 modified silicon dioxide nanoparticles, 2, 6-diphenyl phenoxyethyl acrylate, a photoinitiator and a cross-linking agent into the solvent, and uniformly stirring to obtain the photocuring coating. And carrying out photopolymerization to obtain the nano composite ionic gel material. The nano-composite ionic gel material with impact resistance prepared by the invention is soft in a normal state and low in modulus; and when high-speed impact occurs, rapid and efficient energy dissipation occurs in the interior, the modulus is sharply increased, and the intelligent protection effect of'being rigid when encountering rigid and being flexible when encountering flexible 'can be achieved.

The invention discloses a radiation refrigeration material, a preparation method and a preparation device, and the radiation refrigeration material comprises a primer layer, a middle paint layer and a finish paint layer, the primer layer is doped with titanium dioxide nano particles; the middle paint layer is doped with aluminum oxide or barium sulfate nanoparticles; and the finish paint layer is doped with silicon dioxide nanoparticles and a fluorescent material. The preparation method of the radiation refrigeration material comprises the following steps: S1, respectively preparing the primer, the intermediate paint and the finish paint through weighing, stirring, grinding and filtering processes; s2, the surface of an object is coated with primer, and a primer layer is formed; s3, the surface of the primer layer is coated with intermediate paint, and an intermediate paint layer is formed; and S4, the surface of the middle paint layer is coated with finish paint to form a finish paint layer. The radiation refrigeration material preparation device comprises a stirring barrel, a stirring shaft and a feeding pipe. According to the scheme, the spectral selectivity, durability, environmental friendliness and attractiveness of the refrigeration material can be effectively guaranteed.

The application discloses a kind of low temperature extremely cold environment under optical fiber coating detection equipment and method, belong to coating detection technical field, comprising: obtaining temperature cycle times, coating thickness, heating gradient and other detection condition data, and coating adhesion, shrinkage, cracking length and other performance data;Construct detection condition evaluation model output detection condition coefficient;Based on detection condition, coating performance analysis model is established to output performance evaluation coefficient;Combined with the content of silicon dioxide nanoparticles and polyether polyurethane data, material analysis model is output material analysis coefficient;If the coefficient exceeds the preset threshold, then determine that the coating is unqualified and generate target formulation parameters.The application solves the technical problems of coating performance quantification evaluation and formulation precise optimization under extreme environment, significantly improves detection efficiency and reliability.

The invention provides a nicotine buccal product capable of rapidly inhibiting odor and moistening throat and clearing heat from throat and a preparation method thereof. The nicotine buccal product comprises a core layer, and a throat protecting layer, an odor inhibiting layer and a sweet aftertaste layer which are sequentially coated from inside to outside, the components of the core layer comprise nicotine salt and silicon dioxide nanoparticles; the throat protection layer is prepared from the following components: polylactic acid-glycolic acid copolymer microspheres loaded with nicotine salt, a cyclodextrin inclusion compound of dipotassium glycyrrhizinate and hyaluronic acid; the odor-inhibiting layer comprises the following components: nicotine salt, a cyclodextrin microcapsule loaded with a freshener and zinc zeolite particles loaded with plant essential oil; the sweet aftertaste layer comprises nicotine salt, a hydrophilic polymer material, a sweetening agent and an acidulant. The four-layer structure synergistically controls the nicotine release rate within a reasonable range, the palatability of the nicotine preparation is effectively improved through the multi-layer compound flavoring agent and the plant essential oil, and the nicotine preparation has the effects of freshening breath and clearing throat and is suitable for people with sensitive oral cavity and social scenes.

The invention discloses a high-speed copper-clad plate material based on an epoxy resin system and a preparation method thereof, and belongs to the technical field of energy conservation and environmental protection. In order to solve the problems that a traditional copper-clad plate is high in dielectric loss, poor in heat conductivity and insufficient in heat resistance, fluorinated silicon dioxide nanoparticles (the surface energy is smaller than or equal to 18 mN / m) are prepared through a sol-gel method, and a boron nitride layer is modified through trisodium citrate and aminopropyltriethoxysilane; mixing with bisphenol A epoxy resin, a reactive diluent, a DOPO flame retardant, dicyandiamide and 2-methylimidazole to obtain a resin adhesive; adding nano filler and deionized water, mixing and defoaming at a high speed, presoaking 2116 glass fiber cloth to prepare a prepreg, laminating, matching with copper foil, performing segmented hot pressing, and performing secondary tempering. Dk of the obtained material is 3.1-3.35, Df is smaller than or equal to 0.0055, Tg is larger than or equal to 165 DEG C, heat conductivity is larger than or equal to 0.59 W / m.K, peel strength is larger than or equal to 1.78 N / mm, T288 is larger than or equal to 40 min, and the material is suitable for 5G high-speed PCBs and has low energy consumption and environmental friendliness.

The invention relates to a high-strength MBR (Membrane Biological Reactor) ultrafiltration membrane, a preparation system and method thereof and a spinning solution. According to the invention, a composite nano reinforcing agent composed of modified silicon dioxide and graphene oxide is innovatively introduced into a membrane solution. The two nano materials form a rigid-flexible synergistic enhanced network in a polymer matrix; the graphene oxide is used as a two-dimensional nanosheet layer, so that stress is effectively transmitted and dispersed; and the silicon dioxide nanoparticles are used as stress concentration points to prevent the propagation of microcracks. Meanwhile, the invention provides a set of composite reinforcement solution. The core of the scheme is that a polyester / polyamide high-density composite braided tube subjected to plasma surface treatment is adopted as a mechanical skeleton of the membrane, and main operation stress is borne from the macroscopic scale. The multi-stage synergistic enhancement mechanism from the macroscopic braided tube to the nanoscale endows the membrane filament with mechanical strength far beyond the conventional level and fatigue and filament breaking resistance.

The utility model relates to the technical field of PC plates, in particular to a PC sunlight plate with an anti-dazzle function. According to the technical scheme, the utility model relates to the PC sunlight plate with the anti-dazzle function, and belongs to the technical field of PC plates. According to the technical scheme, the device comprises a hollow honeycomb layer, a gradient refractive index composite layer and a microprism array. The honeycomb axis of the hollow honeycomb layer and the substrate form an inclination angle of 15 degrees, and the inner wall is coated with the titanium dioxide scattering layer, so that light rays can be effectively scattered, glare is reduced, and heat is insulated. The gradient refractive index composite layer is composed of an outer PC base material plate containing a benzotriazole UV absorbent, a middle PC base material plate doped with silicon dioxide nanoparticles in a gradient mode and an inner antistatic modified PC base material plate, and the gradient refractive index composite layer has the anti-ultraviolet function and the anti-static function. And microprism arrays with the height of 0.2 mm and the spacing of 0.5 mm are uniformly distributed on the PC board, so that the anti-dazzle effect is further optimized. According to the utility model, through cooperative operation of all the structures, excellent anti-dazzle, heat insulation, ultraviolet resistance, stable structure and other characteristics are realized.

The invention relates to the technical field of surface modification of super-hydrophobic materials, in particular to an epoxy super-hydrophobic anticorrosive composite coating as well as a preparation method and application thereof. The epoxy group super-hydrophobic anti-corrosion composite coating is composed of a bottom layer and a surface layer, and the bottom layer and the surface layer form chemical-physical combination through a semi-curing-spraying technology. Wherein the bottom layer is formed by mixing modified hexagonal boron nitride composite filler, epoxy resin, a curing agent and a solvent; the modified hexagonal boron nitride is selected from a nano cerium oxide grafted and modified polydopamine-hexagonal boron nitride or a hydroxylated hexagonal boron nitride loaded cerium-8-hydroxyquinoline complex; and the surface layer is a super-hydrophobic layer formed by fluorosilane modified silicon dioxide nanoparticles or fluorosilane modified silicon carbide nanoparticles. The epoxy group super-hydrophobic anti-corrosion composite coating has excellent super-hydrophobicity, long-acting corrosion resistance, mechanical stability and self-repairing function, and the problems in the prior art are solved.

The invention discloses a photochromic core-shell structure organic metal silicon nano composite material and preparation and application thereof, and the composite material is prepared by the following method: under a heating condition, respectively preparing a platinum (II) complex Pt-AP and a spiropyrane derivative SP-AP; the preparation method comprises the following steps: under a room temperature condition, taking tetraethoxysilane as a silicon dioxide precursor, adding Pt-AP into an alkaline solution of ethanol and water, and reacting to obtain core silicon dioxide nanoparticles Pt-SiO2; and then carrying out resuspension, adding a surfactant, SP-AP and tetraethoxysilane, and carrying out a reaction to obtain the photochromic organic metal silicon nano composite material with the core-shell structure. The preparation process is simple, purification is easy, the obtained photochromic composite material and the nanofiber film have reversible response to ultraviolet light and visible light, and the high-performance and multifunctional dynamic optical encryption effect can be achieved.

The application belongs to the technical field of fin materials, and particularly relates to an acid and alkali resistant hydrophobic modified fin, a preparation method and application thereof. The preparation method comprises the following steps: polishing the fin surface to remove the surface oxidation layer and processing marks; washing the polished fin with alkali, then washing with water, and then activating the fin with dilute hydrochloric acid to obtain a pretreated fin; depositing a copper transition layer on the surface of the pretreated fin; preparing a nickel chloride-based liquid phase system, which comprises: 150-250 g / L of nickel chloride hexahydrate, 150-250 g / L of ammonium chloride, 30-50 g / L of boric acid, 0.5-1.5 g / L of multi-walled carbon nanotubes, and 0.6-1.2 g / L of silicon dioxide nanoparticles; immersing the fin with the deposited copper transition layer in the nickel chloride-based liquid phase system to perform electrodeposition; finally, immersing the fin in a trimethoxy(1H, 1H, 2H, 2H-heptadecafluorodecyl) silane ethanol solution, performing light-proof treatment for a set time, washing with water, and drying to obtain a modified fin. The modified fin has both hydrophobic characteristics and acid and alkali corrosion resistance, and can effectively solve the problems existing in the corrosion protection of finned tubes.

The application discloses a kind of nanometer composite ionic gel materials with impact resistance and a preparation method thereof, and belongs to the field of polymer composite materials.The application prepares a solvent by mixing and heating 5-methyl-2-isopropyl phenol and tetrabutylammonium tetrafluoroborate, then adds isobornyl acrylate, hexafluorobutyl acrylate, KH570 modified silicon dioxide nanoparticles, 2,6-diphenyl phenoxy ethyl acrylate, a photoinitiator and a crosslinking agent in the solvent, and the nanometer composite ionic gel material can be obtained after photopolymerization.The nanometer composite ionic gel material prepared by the application is soft and has low modulus in normal state, but when subjected to high-speed impact, rapid and efficient energy dissipation occurs inside, the modulus sharply rises, and the intelligent protection effect of "encountering rigidity to be rigid, encountering softness to be soft" can be realized.

The invention belongs to the technical field of cooling liquid, and particularly relates to nano cooling liquid as well as a preparation method and application thereof. The preparation method of the nano cooling liquid comprises the following steps: providing a mixed solution containing a modified nano material and base oil, and carrying out ultrasonic treatment on the mixed solution to obtain the nano cooling liquid, wherein the modified nano material comprises at least two of oleic acid modified copper nanoparticles, silane coupling agent modified silicon dioxide nanoparticles, silane coupling agent modified boron nitride nanosheets and silicon dioxide coated boron nitride nanosheets; the ultrasonic treatment comprises the following steps: carrying out ultrasonic treatment for the first time at 35-45 kHz, and then carrying out ultrasonic treatment for the second time at 55-65 kHz. The nano-particles can be effectively utilized to improve the heat-conducting property of the cooling liquid, meanwhile, the dielectric loss factor is reduced, and the breakdown voltage is improved.

The invention discloses a super-hydrophobic activated carbon material, a preparation method and application thereof, and relates to the technical field of activated carbon production, the super-hydrophobic activated carbon material comprises the following raw materials by mass: 70-90 parts of activated carbon, 5-15 parts of silica nanoparticles, 1-5 parts of fluorosilane, and 3-7 parts of a reinforcing modifier. According to the invention, the reinforced modifier is added into the raw materials, dopamine is subjected to self-polymerization reaction in an alkaline borate buffer solution to form polydopamine, and the polydopamine contains a large amount of catechol, amino and other active functional groups, so that when the pretreated activated carbon B is immersed into the reinforced modifier, the polydopamine is deposited on the surface of the activated carbon, and the activated carbon B is subjected to self-polymerization reaction to form the modified activated carbon. More binding sites are provided for the self-assembly of the modified particles A through the active groups, the physical adsorption and chemical bonding effects between the modified particles A and the activated carbon are enhanced, so that the actual use effect of the super-hydrophobic activated carbon is enhanced, the production process is optimized in the production process, and the functionality is enhanced.

The invention provides a low-sensitivity and high-taste nicotine buccal preparation and a preparation method thereof. The nicotine buccal preparation comprises an inner layer, a middle layer and an outer layer, wherein the middle layer and the outer layer sequentially coat the inner layer from inside to outside; the outer layer comprises nicotine salt, a plant source carrier and a film-forming agent; the components of the middle layer comprise nicotine salt and a hydrophilic high polymer material; the inner layer comprises nicotine salt, silicon dioxide nanoparticles, a plant source carrier and a film-forming agent; the plant source carrier comprises any one or a combination of at least two of aloe polysaccharide, inulin or pea protein peptide. Through design and compatibility of a three-layer composite structure, the release rate and the release amount of nicotine are cooperatively controlled and controlled within a reasonable range, and the nicotine sustained release tablet has relatively low oral irritation and relatively high taste characteristics, can meet instant requirements and maintenance requirements of nicotine and ensure fresh breath, and is suitable for people with sensitive oral cavities and social scenes.

The invention discloses a nano-composite pressure-reducing injection-increasing oil displacement system and a preparation method thereof, and belongs to the technical field of petroleum and natural gas exploitation chemical agents, the nano-composite pressure-reducing injection-increasing oil displacement system comprises: an acid base solution: hydrochloric acid, hydrofluoric acid, ethylenediaminetetra (methylene phosphonic acid) or ethylenediaminetetraacetic acid; a block type quaternary ammonium salt-betaine surfactant; fluorine-modified graphene oxide; modifying the titanium dioxide nano particles by using amino silane; silica nanoparticles; a fluorocarbon discharge aiding agent; an organic silicon defoaming agent; and deionized water. Through the synergistic effect of nano-compounding and molecular design, the integrated performance of pressure reduction, injection increasing and oil displacement is achieved, and the oil displacement agent is suitable for pressure reduction, injection increasing and oil displacement operation under the high-temperature and high-salt reservoir condition.

The invention provides a thin film transistor, a photodiode and a fluorescent detector. The thin film transistor comprises a substrate, an active layer, a nano thin film layer, a source electrode, a drain electrode and a grid electrode, the active layer is arranged on one side of the substrate; wherein the active layer comprises a channel region, and a first doped region and a second doped region which are positioned at two ends of the channel region; the nano-film layer is at least partially arranged on the surface, deviating from the substrate, of the active layer and covers the channel region; wherein the nano thin film layer comprises silicon dioxide nano particles; the source electrode and the drain electrode are respectively connected with the first doped region and the second doped region; the grid electrode is arranged on at least one side of the channel region. Specifically, the nano thin film layer comprising the silicon dioxide nanoparticles covers the channel region, and the silicon dioxide nanoparticles can improve the stability of the thin film transistor and improve the carrier transmission performance, so that the response speed and sensitivity of the fluorescent detector are improved when the thin film transistor is applied to the fluorescent detector.

The invention relates to the technical field of composite materials, in particular to a high-transparency low-haze flame-retardant polycarbonate composite material as well as a preparation method and application thereof. The invention provides a high-transparency and low-haze flame-retardant polycarbonate composite material as well as a preparation method and application thereof, aiming at the problem that modified polycarbonate cannot give consideration to high light transmittance, low haze, high modulus and high flame retardance in the prior art. Comprising polycarbonate resin, cycloolefin copolymer resin, surface fluorinated silicon dioxide nanoparticles, surface modified C-glass fibers, a core-shell structure flame retardant, a potassium perfluorobutanesulfonate ionic liquid complex, an anti-dripping agent, an antioxidant and an ultraviolet absorbent. According to the invention, through PC / COC matrix refractive index matching and surface modified C-glass fiber surface five-layer gradient coating design, an ultralow refractive index is realized, surface fluorinated silica nanoparticles fill interface microdefects, extremely low interface light scattering is realized, and a highly transparent state is presented.

The invention belongs to the technical field of chemical batteries, and discloses a preparation method of a lithium ion battery suitable for a vibration environment. Selecting positive and negative electrode active materials in a specific particle size range and a binder in a specific molecular weight range; one or more of carboxylated oriented carbon nanotubes, epoxy modified polyurethane microspheres and hydroxylated silicon dioxide nanoparticles are added as additives to enhance the structural stability of the electrode and promote stress dispersion; and the current collector and the tabs are connected by adopting a process of winding first and then laminating, ultrasonic welding and nano-silver adhesive auxiliary bonding, so that the battery assembly is completed. According to the invention, the cycle performance, reliability and safety of the lithium ion battery in a vibration environment are remarkably improved, the failure caused by active substance shedding and interface distortion is reduced, and the lithium ion battery is suitable for high-vibration scenes such as electric automobiles, aerospace and ship underwater vehicles.

The invention relates to the technical field of fibers, in particular to an antibacterial fiber, a preparation method thereof and a fabric. According to the method, chinlon 6 slices are taken as a matrix, and construction of an inorganic-organic synergistic internal antibacterial structure is realized through end sealing of a trifluoromethyl thiazolecarboxylic acid-containing end group, grafting of silicon dioxide nanoparticles with temperature-sensitive poly N-isopropylacrylamide and dual-grafting modification of quaternary ammonium salt-isocyanate in sequence; the antibacterial unit in the obtained fiber is fixed in situ through isocyanate-amino condensation and silanol-amide hydrogen bonds, the fiber has the characteristics of high strength, wear resistance, long-acting antibacterial property, odor suppression and humidity regulation, the prepared fabric still keeps excellent antibacterial property after being washed for multiple times, the process is stable, and the fiber is suitable for industrial production.

The invention relates to a high-temperature-resistant and wear-resistant plastic plate and a preparation process thereof, and the high-temperature-resistant and wear-resistant plastic plate comprises the following components in parts by mass: 30-60 parts of a base material; 15 to 25 parts of modified glass fiber; 5 to 15 parts of chopped carbon fiber; 10 to 20 parts of polytetrafluoroethylene powder; 3 to 8 parts of silicon dioxide nanoparticles; 1-3 parts of a silane coupling agent; 0.5 to 2 parts of an organic nucleating agent; 1-2 parts of a lubricant; comprising the following steps: S1, raw material pretreatment: respectively drying polyamide resin and polycarbonate in a base material at 80-100 DEG C for 4-6 hours; and drying the modified glass fiber and the chopped carbon fiber at 120-150 DEG C for 2-3 hours. The technical problem solved by the invention is to overcome the defect that high temperature resistance and wear resistance of a plastic plate in the prior art cannot be considered at the same time, and the plastic plate can still keep stable mechanical properties and excellent wear resistance in a high-temperature environment of 200 DEG C or above.

The invention relates to the technical field of demolding, and particularly discloses a novel semi-permanent superoleophobic demolding agent and a preparation method thereof. The release agent is prepared from the following raw materials in percentage by weight: 1.0 to 3.5 percent of fluorinated polyhedral oligomeric silsesquioxane, 1 to 10 percent of fluorinated silicon dioxide nanoparticles, 1 to 4 percent of alpha-cyanoacrylate adhesive, 1 to 3 percent of perfluoroalkyl silane, 0.1 to 1 percent of pyridine, 0.1 to 0.5 percent of silane coupling agent and the balance of solvent. The release agent disclosed by the invention has the characteristics of excellent super-oleophobicity, excellent wear resistance, outstanding chemical stability, relatively strong adhesive force, wide applicability and the like, can play a good barrier role between a molded surface and a base material, reduces the probability of adhesion between molded parts, and is relatively low in probability of transferring to the surfaces of the molded parts, so that the release agent can be applied to the surface treatment of the molded parts. Therefore, the recoating frequency is obviously reduced, and the labor cost and the material consumption are reduced.