65results about How to "Strong absorption capacity" patented technology

The invention discloses a preparation method of antistatic modified chinlon filaments, and relates to the field of chinlon filaments. When the antistatic modified chinlon filament is prepared, (formylmethyl) diethyl phosphate and 1-aminopyrrole react to prepare pyrrole diethyl phosphate; reacting the hydroxylated multi-walled carbon nanotube with pyrrole diethyl phosphate to obtain a modified multi-walled carbon nanotube; the preparation method comprises the following steps: reacting 2, 2 '-bipyridine-5, 5'-dicarboxylic acid with 2-amino-5-nitrophenol, and then reducing to obtain a benzoxazole diamine monomer; then, adipic acid, 1, 5-diaminopentane and a benzoxazole diamine monomer are subjected to a reaction, and modified polyamide is prepared; uniformly mixing the modified polyamide, the modified multi-walled carbon nanotubes, pyrrole, ferric trichloride and copper chloride, and performing melt spinning to obtain the antistatic modified polyamide filament. The antistatic modified chinlon filament prepared by the invention has excellent antistatic, flame-retardant, anti-aging and mechanical properties.

The invention provides a fluorine-containing aromatic acid ligand modified zirconium metal oxide nano-cluster photoresist material as well as a preparation method and application thereof. The preparation method of the fluorine-containing aromatic acid ligand modified zirconium metal oxide nano-cluster photoresist material comprises the following steps: mixing a Zr6O4 (OH) 4 (MAA) 12 solution and a fluorine-containing aromatic acid ligand compound solution, and carrying out reaction, rotary evaporation and drying to obtain the fluorine-containing aromatic acid ligand modified zirconium metal oxide nano-cluster photoresist material. The preparation method is simple, cheap and easily available in raw materials, low in cost and suitable for industrial production. The fluorine-containing aromatic acid ligand modified zirconium metal oxide nano-cluster photoresist material can be suitable for ultraviolet lithography, electron beam lithography and extreme ultraviolet lithography, and the formed photoetched pattern has the advantages of low line edge roughness, high resolution and the like, and has wide application prospects.

The invention relates to environment-friendly hydrophobic ink and a preparation method thereof, and belongs to the technical field of water-based ink. A copolymerization modifier capable of being combined in a water-based polyacrylate emulsion in an initiation polymerization mode in the stage of preparing the modified water-based polyacrylate emulsion is prepared, and an o-hydroxy aromatic ketone structure in the copolymerization modifier can endow water-based ink with lasting ultraviolet absorption performance; the trifluoromethyl structure can reduce the surface energy of the water-based ink, and the benzimidazole ring structure can form stable coordinate bonds with metal ions, so that the bonding performance of the water-based ink and a metal substrate is enhanced; when the copolymerization modifier is used for modifying the water-based polyacrylate emulsion, the long-term performance, the hydrophobic and oil-resistant performance and the adhesion performance on the surface of a metal base material of the finished water-based ink can be effectively improved.

The invention belongs to the field of organic electroluminescent materials, and discloses a blue light host material, a preparation method and an organic electroluminescent device. The structure of the blue light host material is as shown in a chemical formula I: # imgabs0 #. After the blue light host material provided by the invention is applied to the organic electroluminescent device, the driving voltage of the photoelectric device can be reduced, the luminous efficiency of the photoelectric device can be improved, and the service life of the photoelectric device can be prolonged.

The invention discloses an anti-ultraviolet automobile film and a preparation method thereof, and belongs to the technical field of automobile films. The invention relates to a high-temperature-resistant coating which comprises the following components in parts by weight: 80-100 parts of polyethylene glycol terephthalate, 3-5 parts of polyimide, 5-8 parts of a plasticizer, 2-3 parts of a defoaming agent, 1-2 parts of a flatting agent and 20-30 parts of TiO2 / PDA / ZnO (at) MOF. TiO2 is wrapped by polydopamine, agglomeration of TiO2 is prevented, meanwhile, ZnO is wrapped on the outer layer more uniformly due to the adsorption effect on ZnO, and polydopamine also has the antibacterial and light absorption effects; the combination of TiO2 and ZnO can effectively improve the breadth and depth of ultraviolet protection. The prepared automobile film has high transmittance and ultraviolet absorptivity, and a pencil hardness test table has good mechanical properties and good antibacterial rate.

The invention discloses a preparation method of a foamed thermal-insulation ceramic decorative plate in the technical field of building decorative materials. The method comprises the following steps: carrying out ball milling, spray drying, granulating and ageing on raw materials such as ceramic waste and kaolin; mixing and dispersing the aerogel-hydrogel gradient core-shell structure composite modified material and ceramic particles, and sieving to obtain composite powder; compounding sodium bicarbonate and azodicarbonamide with a foaming agent, mixing the foaming agent with the composite powder, and adding a surfactant and a dispersing agent to adjust the viscosity so as to prepare expandable ceramic slurry; the slurry is injected into a mold and coated with low-temperature glaze, and stepped heating sintering is conducted through a tunnel kiln and comprises the steps of preheating glue discharging, primary foaming, secondary sintering, gradient cooling and the like. The thermal insulation performance, the mechanical strength, the weather resistance and the decoration performance are synergistically improved, and the product is low in heat conductivity coefficient, high in compressive strength, excellent in ultraviolet aging resistance, firm in decoration layer combination and suitable for building outer walls and other scenes.

The present invention provides a FeNiHo / carbon nanofiber composite absorber and a preparation method thereof, an absorbent material and a preparation method thereof, and belongs to the technical field of electromagnetic wave absorbing materials. The present invention first mixes iron salt, nickel salt, holmium salt and polyvinyl pyrrolidone in a mixed solvent, and electrostatically spins the obtained spinning precursor solution to obtain a nanofiber membrane; the nanofiber membrane is sequentially subjected to pre-oxidation treatment and carbonization treatment to obtain a FeNiHo / carbon nanofiber composite absorber. The FeNiHo / carbon nanofiber composite absorber, paraffin and petroleum ether are mixed, and then pressed and irradiated with ultraviolet light to obtain an absorbing material. The FeNiHo alloy nanoparticles in the composite absorber improve the impedance matching performance and electromagnetic wave attenuation ability of the carbon nanofiber. The obtained absorbing material can achieve the purpose of real-time adjustment of the absorption frequency by irradiation with ultraviolet light.

The invention discloses a mixed alkali liquor carbon dioxide trapping agent and a trapping method thereof. The trapping agent comprises the following components in percentage by mass: 22-38% of main absorbent sodium carbonate, 1-10% of auxiliary absorbent A organic amine, 2-7% of auxiliary absorbent B sodium phosphate and / or disodium hydrogen phosphate and the balance of water. When the carbon dioxide is captured, the gas containing the carbon dioxide is in full contact with the mixed alkali liquid carbon dioxide capturing agent, the capturing agent absorbs the carbon dioxide to generate sodium bicarbonate precipitate, and the separated sodium bicarbonate solid is heated and desorbed at the temperature of 100-180 DEG C to obtain sodium carbonate, the carbon dioxide and water; and finally, returning the analyzed sodium carbonate to the mixed alkali liquor for recycling, and dehydrating, drying and purifying the mixed gas of carbon dioxide and water to obtain carbon dioxide. The trapping agent has the advantages of low cost, high carbon dioxide absorption capacity, high absorption rate, low regeneration energy consumption, safety and no toxicity; the sodium carbonate saturated solution is activated by using organic amine, so that the carbon dioxide absorption efficiency is improved; the separated sodium bicarbonate is heated and decomposed to obtain carbon dioxide, so that the working energy consumption is greatly reduced.

The invention provides a middle and far infrared broadband metamaterial absorber and a design method thereof. The middle and far infrared broadband metamaterial absorber comprises metamaterial absorption units which are arranged in a periodic array mode. The whole metamaterial absorption unit is square and comprises a top metal layer, a dielectric layer and a bottom metal layer from top to bottom in sequence. The top metal layer is attached to the upper surface of the dielectric layer and is formed by arranging eight metal sheets according to a certain arrangement mode, namely a circular metal sheet which is arranged at the central position of the upper surface of the dielectric layer, and the center of the circular metal sheet is aligned with the center of the upper surface of the dielectric layer; three annular metal sheets concentric with the circular metal sheet surround the periphery of the circular metal sheet, and gaps exist between the circular metal sheet and the annular metal sheet on the innermost layer and between the annular metal sheets on the adjacent layers from inside to outside. And the four metal square sheets with the same size are respectively arranged at four corners of the upper surface of the dielectric layer. The absorption bandwidth is greatly prolonged, and perfect absorption of a target wave band can be infinitely approached by adjusting geometric parameters of the absorber.

The invention provides an oligomeric micromolecule donor compound as well as a preparation method and application thereof. The oligomeric small molecule donor compound belongs to a brand-new long conjugate organic small molecule donor material containing a connecting unit, two or more efficient organic small molecule donors are combined into a whole, the conjugate length is prolonged, and a series of novel oligomeric small molecule donor materials are synthesized. The oligomeric small molecule donor compound disclosed by the invention has good batch repeatability and relatively good film-forming property; the oligomeric small molecule donor compound prolongs the conjugate length, has excellent ultraviolet-visible light absorption performance, has strong interaction and aggregation among molecules, can realize good phase separation from a non-fullerene receptor, has a proper electron energy level, and is suitable for being used as an electron donor material in an organic solar cell.

The invention belongs to the field of wave-absorbing materials, and particularly relates to a preparation method and application of an aluminum oxide doped high-temperature radar wave-absorbing coating. According to the method for modifying the CBS microcrystalline glass through aluminum oxide doping, the problem of coating cracking caused by volume shrinkage due to crystallization in the heat treatment process of a CBS-based wave-absorbing coating prepared through traditional atmosphere plasma spraying is solved, the compactness of the coating is further improved, oxidation of a Fe-based magnetic absorbent in a high-temperature environment is prevented, and the service life of the wave-absorbing coating is prolonged. The high-temperature stability of the coating is improved, and the aluminum oxide raw material is convenient to obtain; the preparation method provided by the invention is simple in process and easy for industrial production, has the advantages of lower density, wider radar absorption frequency band, strong oxidation resistance and the like compared with a coating of the same type, and can be stably used in a 700 DEG C environment.

The invention provides a substrate integrated trapped wave mirror image dielectric waveguide S-shaped circularly polarized antenna, which belongs to the field of antennas and comprises an S-shaped dielectric radiator, a metalized through hole, a microstrip feeder line, a first metal grounding plate, a first dielectric substrate, a second metal grounding plate and a second dielectric substrate, the S-shaped dielectric radiator is embedded in the first dielectric substrate and located in the center of the antenna, the lower surface of the S-shaped dielectric radiator is tightly attached to the second metal grounding plate, the upper surface of the S-shaped dielectric radiator is not covered, a plurality of metalized through holes penetrate through the first dielectric substrate and are arranged on the periphery of the S-shaped dielectric radiator in an array mode, and a gap is formed in the second metal grounding plate. The microstrip feeder is located on the lower surface of the second dielectric substrate and is perpendicular to the gap. The end, away from the gap, of the microstrip feeder is connected to a feed port in the second dielectric substrate. Circular polarization is easy to realize by combining the bent dielectric structure with the slot coupling feed at the bottom, and the radiation efficiency of the antenna is improved by using the notch mirror image structure in the antenna design.

The invention discloses a high-efficiency liquid organic fertilizer and a preparation method thereof, and belongs to the technical field of organic fertilizer. It is made of the following raw materials in parts by weight: 200-300 parts of livestock and aquaculture wastewater, 50-80 parts of plant straw, 10-20 parts of pretreatment agent, 10-20 parts of EM bacteria, 20-30 parts of composite microbial agent, 3-10 parts of promoter, 1-3 parts of potassium dihydrogen phosphate, and 0.05-0.2 parts of trace elements; the promoter is composed of sunflower disk extract and sodium lauryl alcohol polyether sulfate in a mass ratio of 3:1; the pretreatment agent is a biochar-TiO2 composite material. The present invention realizes the resource utilization of livestock and aquaculture wastewater, converts wastewater into liquid organic fertilizer rich in nutrient elements, provides high-quality fertilizer resources for agricultural production, effectively removes harmful substances in wastewater through the combination of biological treatment and physical and chemical treatment technology, ensures the safety and environmental protection of organic fertilizer, and the obtained organic liquid fertilizer has a significant effect on improving potato yield and quality, and has good application prospects.

The invention relates to the field of thermal insulation materials, in particular to a thermal insulation microfiber centrifugal glass wool thermal insulation material and a preparation method thereof, which solves the problem that after acrylic ester in the centrifugal glass wool is bonded to glass fibers, the gaps between the glass fibers are blocked, the irregular gaps are less, and the thermal insulation and sound insulation performance of the centrifugal glass wool is reduced; the invention specifically comprises modified fiber cotton and a porous adhesive, wherein a porogen is used in the adhesive to form interconnected micropores along a porous skeleton at 230-280°C; the application prepares a special adhesive by adding a porogen, which not only ensures the bonding strength between the glass fibers, but also forms microporous channels, thereby enhancing the thermal insulation and heat preservation performance of the glass wool, and does not generate debris to cause harm to the human body.

This invention relates to the field of flue gas treatment technology, specifically to a sulfur dioxide gas absorbent, comprising the following raw materials by weight: 90-100 parts of an aqueous amine solution and 2-6 parts of additives. In this invention, the nitrogen-zinc ion-sulfur active center of the catalyst acts as a molecular key, efficiently and reversibly coordinating and activating sulfur dioxide molecules, significantly reducing the reaction energy barrier and fundamentally improving the intrinsic absorption rate. The enhancer, with its high specific surface area, provides a large interface for the reaction. Its surface sulfonic acid groups not only buffer the decrease in system pH, maintaining the optimal acid-base environment for the reaction, but also catalyze the conversion of absorption intermediates into more stable products, thereby shifting the reaction equilibrium to the right. Under the combined effect of these two factors, the catalyst accelerates the reaction towards equilibrium, while the enhancer continuously shifts the equilibrium point, resulting in a higher absorption capacity for the absorbent.

The invention relates to bioglass powder containing nano titanium nitride as well as a preparation method and application of the bioglass powder. The bioglass comprises the following components in percentage by mass: 75-95% of bioglass powder and 5-25% of nano titanium nitride powder, the melting process of the bioglass containing nano titanium nitride comprises the following conditions: the temperature is 650-800 DEG C, and the time is 10-15 minutes; the photo-thermal treatment method comprises the step of applying near-infrared light to the nano titanium nitride-containing bioglass powder to regulate and control release of active ingredients in the bioglass, and can also comprise the step of inducing generation of hydroxyapatite on the surface of the bioglass. Compared with the prior art, the bioglass not only has a remarkable photothermal effect, but also has the advantages that the nano titanium nitride powder is not easy to lose and the photothermal performance of the bioglass containing the nano titanium nitride is kept good in an experiment of simulating implantation into a human body environment; the release of active ingredients in the bioglass and the generation of hydroxyapatite on the surface of the bioglass are regulated and controlled by applying near-infrared light, so that controllable and sustainable repair of bone tissues is realized. The technology can be applied to the fields of bone repair, regeneration and the like in bone tissue engineering.

The application discloses a kind of two-dimensional organic material based on porphyrin unit and its preparation method and application, the two-dimensional organic material is formed by the supramolecular interaction of protonated 5,10,15,20-tetra (4-aminophenyl) porphyrin and pyromellitic acid self-assembly.It does not need to add surfactant in its preparation process, only by reducing the precursor concentration and appropriately increasing the pH value of pure water phase regulation, by low concentration limited self-assembly, directly obtain the dispersion stable two-dimensional ultrathin nanosheet.The material takes porphyrin unit as light active center and specific adsorption site, in the complex composition of electronic waste leaching solution, without additional electron sacrificial agent, by material itself consumption photogenerated hole, under visible light driving, complete the selective enrichment and in-situ reduction of tetrachloroaurate anion, generate elemental gold.The application process is simple and environmental protection, with good application prospect.

This invention belongs to the field of hollow multi-component nanomaterial preparation technology, specifically disclosing a hollow Cu3NbSe4 nanomaterial, its preparation method, and its application. The microstructure of the nanomaterial is a nanoscale hollow cubic structure. The preparation method includes: (1) dissolving niobium source and selenium source separately in oleylamine solvent by heating for later use; (2) treating the soluble copper source and the niobium source dissolved in (1) in a high-boiling-point organic solvent for deoxygenation and dehydration, and then carrying out a solvothermal reaction; (3) when (2) is heated to a certain temperature, injecting the selenium source dissolved in (1) to carry out a solvothermal reaction, and separating the obtained solid product after the reaction is completed. The synthesis process of this invention is simple, the reaction conditions are mild, and the energy consumption and cost are low; more importantly, it realizes the preparation of hollow Cu3NbSe4 nanomaterial with uniform morphology and size, high crystallinity, and stronger light absorption capacity, and the prepared hollow Cu3NbSe4 shows excellent performance in photocatalytic hydrogen production.

The present invention relates to a nickel hydroxide modified graphene composite broadband wave absorbing material and a preparation method and application, belonging to the technical field of electromagnetic wave absorbing materials. The specific synthesis method is: pre-oxidation treatment is performed on the graphene raw material using hydrogen peroxide. This step creates a large number of defects on the graphene surface to create conditions for the loading of nanoparticles. Then, nickel hydroxide is loaded on the pre-treated graphene surface under the condition of different alkaline solution addition amounts. The nickel hydroxide particles under different synthesis conditions have different sizes. By adjusting the loading conditions, the modification effect of nickel hydroxide on graphene can be optimized, and the overall absorption capacity of electromagnetic waves is enhanced, thereby obtaining a broadband electromagnetic absorption material. At the same time, the synthesis process of the material is simple, the filling ratio and application thickness are low, and it can meet the needs of industrial production and has application value.

The invention discloses a white light COB light source and a preparation method, and relates to the technical field of LED illumination, and the preparation method specifically comprises the following steps: fixing a blue light flip chip above a PCB through solder paste, fixing a fluorescent diaphragm above the chip, dripping a layer of glue above the chip and the fluorescent diaphragm, and curing to obtain the white light COB light source. The fluorescent membrane can be a single-layer fluorescent membrane or a double-layer fluorescent membrane, is suitable for different fields, has good optical performance, can replace a QD membrane, and reduces the cost.

The application discloses a kind of flame-retardant bacteriostatic wave-absorbing PET fibers and preparation method thereof, the fiber includes fiber body and is arranged on the bacteriostatic wave-absorbing layer of fiber body surface, fiber body is skin-core composite structure, from inside to outside includes core layer and flame-retardant wave-absorbing barrier layer in sequence;Flame-retardant wave-absorbing barrier layer is the raw material of flame-retardant wave-absorbing mixture, includes the following components by weight parts:PET polyester chip 100, flame retardant 9-15, flame-retardant wave-absorbing particle 22-40, compatible agent 1.5-4.The bacteriostatic wave-absorbing layer in the application can provide excellent electromagnetic wave absorption capacity through the bacteriostatic wave-absorbing particle therein, can realize effective protection to electromagnetic pollution, and also can provide excellent antibacterial performance through active oxygen generated under light and / or electromagnetic wave irradiation.Flame-retardant wave-absorbing barrier layer can provide good reflection and absorption electromagnetic wave capacity in addition to being able to improve flame-retardant performance through the flame-retardant wave-absorbing particle therein.

The invention belongs to the technical field of photo-thermal hydrophilic thin films, and discloses a transparent hydrophilic thin film with photo-thermal anti-fog and demisting performance and a preparation method of the transparent hydrophilic thin film. The transparent hydrophilic film is obtained by performing film forming treatment on a composite film solution, and the composite film solution comprises polyvinyl alcohol, a sulfonic polymer, cesium tungsten bronze nanoparticles and deionized water. The preparation method comprises the following steps: dissolving polyvinyl alcohol in deionized water, constructing a hydrophilic cross-linked network through hydrogen-bond interaction between the polyvinyl alcohol and a sulfonic polymer material, and cooperating with cesium tungsten bronze nanoparticles to prepare the transparent photo-thermal hydrophilic anti-fog film. According to the prepared anti-fog thin film material, a distorted non-coplanar structure is introduced to increase the free volume of molecules, so that the moisture absorption capacity in the thin film is improved, high transparency is kept, meanwhile, excellent photo-thermal performance is achieved in the ultraviolet / near-infrared region of sunlight, and the anti-fog and demisting effects are achieved under strong sunlight irradiation.

The invention discloses a continuous color-changing intelligent energy-saving window prepared through laser-induced forward transfer, which comprises a first matrix layer, a composite functional layer and a second matrix layer which are sequentially stacked, and the composite functional layer comprises a three-dimensional surface plasmon structure layer and a thermochromic liquid crystal layer, the three-dimensional surface plasmon structure layer is prepared through a laser-induced forward transfer process, and a patterned three-dimensional micro-nano structure is formed on the first substrate layer; the thermochromic liquid crystal layer comprises liquid crystals and a chiral agent, and the reflection wavelength of the thermochromic liquid crystal layer is continuously adjustable in the whole visible light wave band along with temperature changes. Energy saving is achieved through strong absorption of the three-dimensional surface plasmon structure layer on visible light and infrared bands in ambient light, and the photothermal effect of the three-dimensional surface plasmon structure layer is used for driving the thermochromic liquid crystal layer to generate continuous and reversible color changes of full visible light bands; meanwhile, the structural layer is black or dark due to strong absorption, and the brightness of the reflection color of the liquid crystal layer is remarkably enhanced.

The invention provides an anti-ultraviolet aging PC / ABS composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The PC / ABS composite material is prepared from the following raw materials in parts by weight: 5-10 parts of a modifier and 150-200 parts of PC / ABS plastic, the modifier is a composite metal oxide subjected to UV326 / UV531 intercalation, after the surface of the composite metal oxide is modified by polydopamine, the modified composite metal oxide reacts with phytic acid and tris (2-chloroethyl) phosphate, and TiO2 is deposited in situ to prepare the modifier. The composite material prepared by adding the modifier prepared by the invention into PC / ABS plastic has better ultraviolet aging resistance, the mechanical property and thermal stability of the material are enhanced, the antibacterial property and flame retardance are improved, and the composite material has wide application prospects.

The application provides a compound, a preparation method thereof and a composition containing the compound. A structural formula of the compound is shown as formula I. The preparation method of the compound is as follows: mixing diisopropanolamine and ethylene glycol diglycidyl ether, adding the mixture into a reaction kettle, adding a solvent, and reacting at 80-120 DEG C for 4-8 h, and then distilling at 50-80 DEG C under reduced pressure, collecting the distillation product, and obtaining the compound; mixing the compound and N-methyldiethanolamine in a mass ratio of (1-2):(2-3), and uniformly mixing to obtain a 20-60 wt% aqueous solution, and obtaining the composition.

The invention discloses a BODIPY dye with an annular structure as well as a preparation method and application thereof, relates to the technical field of medical dyes, and solves the problems of stability of the BODIPY dye in an aqueous medium and safety in a living body. The preparation method comprises the following steps: dissolving a compound A and dicarboxylic acid in anhydrous dichloromethane, adding 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and a catalyst, carrying out a reaction under the protection of nitrogen, and carrying out silica gel column chromatography purification on a crude product to obtain the BODIPY dye with the cyclic structure. The amphipathy of the cyclic BODIPY formed by ester bonds or ether bonds is increased, so that the cyclic BODIPY forms nanoparticles in an aqueous solution, the BODIPY photosensitizer is delivered in a living body, the stability of the BODIPY photosensitizer in water is enhanced, the in-vivo circulation time is prolonged, the safety of the BODIPY photosensitizer in the living body is improved, and the integration of tumor diagnosis and treatment in the living body can be realized.

The invention discloses an ad hoc network communication system based on spatial quantum key distribution, and relates to the technical field of quantum communication. According to the invention, the information is encrypted by applying the quantum key distribution technology, so that theoretical unconditional security can be realized, and any eavesdropping behavior can disturb the quantum state, so that both communication parties can immediately perceive the quantum state, and the risk of information leakage is fundamentally eliminated. According to the quantum key distribution system, through modulation of a heterodyne detector, a homodyne detector and a traveling wave parameter amplifier on a generated microwave dual-mode compression state and cooperation of detection of the heterodyne detector, the homodyne detector and the traveling wave parameter amplifier in the quantum key distribution system of the two communication parties, quantum key distribution based on a microwave state in a free space is achieved; the microwave state has stronger resistance to absorption, heat dissipation, turbulence and thermal noise of the air atmosphere, the efficiency and the propagation distance of quantum key distribution are enhanced, and the key management effect of the ad hoc network communication system is improved.

The present invention discloses a two-dimensional organic / inorganic heterojunction optoelectronic neuron device and a preparation method thereof, belonging to the technical field of optoelectronic devices. In the present invention, the TMDC material MoS is firstly peeled off by mechanical stripping. 2 Transferred to the substrate, and then on MoS 2 The thin film electrode is plated on the MoS layer, and finally the inverted method is used to 2 A single layer of Me-PTCDI crystal is grown epitaxially on the layer to form a heterojunction. MoS 2 The formation of the / Me‑PTCDI heterojunction makes the optoelectronic neuron device have excellent photosensitivity and light adaptability, and can simulate the response of the intrinsic photosensitive ganglion cells of the retina under different light conditions; the device can make current changes under the stimulation of light pulses, thereby imitating the production and action of human melatonin, and can achieve visual adaptation in bright and dark environments under gate voltage regulation. The corresponding characteristics make this device have broad application prospects in the field of autonomous driving.

The invention provides a general polymer modified sponge hydrophobic material and a preparation method thereof, the general polymer modified sponge hydrophobic material comprises a sponge and a general polymer anchored on the sponge, based on the total weight of the hydrophobic material, the loading capacity of the general polymer is 1-15 wt%, and the water contact angle of the hydrophobic material is 120-150 degrees. According to the present invention, by using the strong hydrophobic and oleophylic properties of the general polymer material, the general polymer material is anchored on the skeleton of the melamine sponge or the polyurethane sponge through repeated impregnation, such that the obtained hydrophobic material can achieve rapid and efficient oil-water separation, and has the oil substance adsorption capacity of 80-180 g / g, which is up to 167 times of the self weight;

The invention relates to the field of cosmetics, in particular to a plant sunscreen synergist as well as a preparation method and application thereof. The plant sunscreen synergist is composed of a scutellaria baicalensis extract, a tea leaf extract and a ligusticum wallichii extract, and when the weight ratio of the scutellaria baicalensis extract to the tea leaf extract to the ligusticum wallichii extract is 3: 1: 1, the synergist has the absorption effect of effective coverage of different UV wave bands, and the ultraviolet ray absorption effect is optimal.