293results 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 a photodynamic antibacterial fiber as well as a preparation method and application thereof. The preparation method of the photodynamic antibacterial fiber comprises the following steps: S1, preparing a bismuth sulfide / Michelene composite material; s2, mixing the bismuth sulfide / Michelene composite material with spinning slices, a coupling agent, a lubricant and a nucleating agent to obtain a mixture; and S3, carrying out melt electrostatic spinning on the mixture. The Bi2S3 / MXene composite material is prepared by coupling an n-type direct band gap semiconductor Bi2S3 with excellent photosensitivity and good absorption capability in a wide wavelength with MXene with excellent conductivity, relatively strong light absorption and conversion capability and good biocompatibility, so that the electron hole separation efficiency and the light absorption capability of the semiconductor can be effectively improved; the Bi2S3 / MXene composite material which can realize full-wave-band photodynamic antibiosis and has high ROS yield is constructed, so that the antibiosis efficiency of the prepared fiber is improved.

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 technical field of seedling raising substrates, and particularly relates to a seedling raising substrate based on straw and cow dung and a preparation method thereof.The seedling raising substrate based on straw and cow dung is prepared from, by weight, 20-40 parts of dry cow dung, 20-40 parts of straw segments, 10-20 parts of ferroferric oxide composite water-absorbent resin, 6-8 parts of EM bacteria and 40-60 parts of field soil. The preparation method comprises the following steps: grafting a silane coupling agent on the surface of ferroferric oxide, then carrying out polymerization reaction on the surface of the ferroferric oxide grafted with the silane coupling agent and acrylic acid to generate ferroferric oxide-sodium polyacrylate particles, and the ferroferric oxide-sodium polyacrylate particles are magnetic particles. And the surfaces of the ferroferric oxide-sodium polyacrylate particles have abundant carboxyl (-COOH) and sodium carboxylate (-COONa) functional groups. The functional groups can form hydrogen bonds or ionic bonds with water molecules, so that the hydrophilicity and water absorption of the surfaces of the particles are improved.

According to the system for machining the micro-hemispherical harmonic oscillator based on the carbon dioxide laser, the glass substrate is heated and softened through the carbon dioxide laser, and the energy utilization rate is higher. The horizontal displacement table drives the forming mold to move until the center coincides with the center of a laser spot, so that the positioning accuracy of a processing area is ensured; the diameter of the laser beam is adjusted through the beam expander, it is guaranteed that the diameter of a laser spot is larger than that of the to-be-machined micro-hemispherical harmonic oscillator, and the accuracy of a machining area is guaranteed. The forming mold and the glass substrate are driven to rotate through the rotating table, so that heat distribution of a processing area is relatively balanced, the size deviation of the micro-hemispherical harmonic oscillator caused by unbalanced heat distribution is avoided, and the processing quality of the micro-hemispherical harmonic oscillator is improved. Compared with a traditional method for softening the glass substrate through flame heating, all technological parameters in the machining process can be accurately controlled, the method has the advantages of being easy to operate and high in automation integration degree, and the micro-hemispherical harmonic oscillators high in forming precision and good in batch consistency can be machined.

The invention provides a hybrid rose inclusion and a preparation method thereof, and the inclusion comprises the following components in percentage by weight: 1-10% of simmondsia chinensis seed oil, 1-10% of meadowfoam seed oil, 1-10% of hydroxystearic acid, 1-10% of squalane, 1-10% of ebony seed oil, 1-10% of 1, 2-propylene glycol, 1-10% of 1, 3-propylene glycol, 1-10% of 1, 3-propylene glycol, 1-10% of 1, 3-propylene glycol, 1-10% The composition is prepared from the following components in percentage by weight: 0.4 to 1 percent of 1, 2-hexanediol, 0.4 to 1 percent of p-hydroxyacetophenone, 0.01 to 10 percent of oleic acid / linoleic acid / linolenic acid polyglycerol ester, 0.01 to 10 percent of adansonia digitata seed oil, 0.01 to 10 percent of silybum marianum seed oil, 0.01 to 10 percent of hybrid rose flower extract, 0.01 to 10 percent of palmitoyl tea extract, 0.01 to 10 percent of tamarind seed gum, 0.01 to 10 percent of tocopheryl acetate, 0.01 to 10 percent of tocopherol (vitamin E), 0.01 to 10 percent of tuber melanosporum extract, 0.01 to 10 percent of haematococcus pluvialis extract and 0.01 to 1 percent of EDTA (Ethylene Diamine Tetraacetic Acid) disodium. The preparation method disclosed by the invention is simple, and the prepared skin care product has the advantages of good stability, high utilization rate of active matters and good skin absorption effect.

The invention discloses a preparation method of a CuPt-CSTO nano composite material, which comprises the following steps: preparing a Cr-doped SrTiO3 material CSTO by using Sr (NO3) 2, TiO2, Cr (NO3) 3 and KOH as raw materials and deionized water as a solvent through a solvothermal method; cuCl2, H2PtCl6. 6H2O and CSTO are used as raw materials, a methanol aqueous solution is used as a solvent, a two-step photodeposition method is adopted to prepare the CuPt-CSTO nanocomposite hydrogen production photocatalyst, and the CuPt-CSTO nanocomposite hydrogen production photocatalyst has the advantages of being high in visible light response capacity, tight in interface bonding, stable in structure, rich in oxidation reduction active sites and high in reduction potential and hydrogen production activity and can be applied to solar energy and photocatalytic hydrogen production.

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 a two-dimensional organic / inorganic heterojunction photoelectric nerve component and a preparation method thereof, and belongs to the technical field of photoelectric devices. According to the invention, a TMDC material MoS2 is transferred to a substrate through a mechanical stripping method, then a film electrode is plated on a MoS2 layer through an electron beam lithography method, and finally a single-layer Me-PTCDI crystal is epitaxially grown on the MoS2 layer through a back-off method to form the heterojunction. Due to the formation of the MoS2 / Me-PTCDI heterojunction, the photoelectric nerve device has excellent photosensitivity and light adaptability, and can simulate reactions of retinal essential photosensitive ganglion cells under different illumination; the device can make current change under the stimulation of light pulses so as to simulate the generation and action of human melatonin, and can realize visual adaptation in bright and dark environments under the regulation and control of grid voltage, and the device has a wide application prospect in the field of automatic driving due to the corresponding characteristics.

The invention discloses a cation modified soft PVC membrane material and a preparation method thereof, and relates to the technical field of high polymer materials. When the cation modified soft PVC membrane material is prepared, pre-modified polyvinyl chloride and an allyl salicylaldehyde Schiff base ligand react to prepare modified polyvinyl chloride; the preparation method comprises the following steps: carrying out a reaction on 5-oxo-2, 3-dihydro-5H-thiazolo [3, 2-a] pyridine-3, 7-dicarboxylic acid and N-(2-ethoxyl) maleimide to prepare a bismaleimide ultraviolet absorbent; reacting the pre-modified zinc oxide with 2-chloromethyl furan to obtain modified zinc oxide; and mixing the modified polyvinyl chloride, the modified zinc oxide, a bismaleimide ultraviolet absorbent, zinc acetate, diisononyl phthalate, epoxidized soybean oil and calcium stearate, plastifying, calendering, cooling and rolling to prepare the cation modified soft PVC membrane material. The cation modified soft PVC membrane material prepared by the invention has excellent antibacterial, anti-aging and self-repairing properties.

The invention belongs to the technical field of photo-thermal catalysis and biomass resource utilization, and particularly relates to a sulfonated biochar PC-SO3H-1 catalytic material as well as a preparation method and application thereof. The preparation method comprises the following steps: performing NaOH aqueous solution ultrasonic pretreatment, washing, drying and grinding on cellulose to obtain pretreated cellulose powder, uniformly dispersing the pretreated cellulose powder, p-toluenesulfonic acid and citric acid in deionized water, fully stirring at room temperature, then transferring the solution into a high-pressure reaction kettle, reacting, cooling, washing and drying to obtain the cellulose-p-toluenesulfonic acid / citric acid composite material. And grinding to obtain the PC-SO3H-1 photo-thermal catalytic material. The catalyst disclosed by the invention can be used for performing efficient photothermal conversion, so that the generation of biodiesel can be quickly catalyzed under the condition of room temperature.

The invention belongs to the technical field of environmental protection, and particularly relates to a preparation method and application of diamine porous ionic liquid. The preparation method comprises the following steps: firstly, carrying out in-situ synthesis on an MEA-loaded zeolite imidazole framework MEA (at) ZIF-8 through a hydrothermal method; then synthesizing amine functionalized imidazole ionic liquid [Amim] [NTf2] which takes trifluoromethanesulfonyl imide as an anion through an ion exchange method; finally, on the basis of the principle of similar dissolvability, the [Amim] [NTf2] and the MEA (at) ZIF-8 are combined through a solvent dispersing and mixing method, and the diamine porous ionic liquid MEA (at) ZIF-8-Amim-PIL is prepared. The diamine porous ionic liquid prepared by the method retains excellent carbon capture performance of the ionic liquid and ZIF-8, realizes a synergistic effect of low-pressure CO2 high-density distribution of liquid pore channels and an efficient electrostatic effect of diamine groups, can be used for low-pressure flue gas carbon capture, and is high in regeneration efficiency, low in energy consumption and beneficial to environmental protection.

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 invention relates to a preparation method of a calcium-based absorbent, the calcium-based absorbent and application of the calcium-based absorbent. The preparation method of the calcium-based absorbent comprises the following steps: 1) calcining a calcium-based raw material to obtain a raw material containing calcium oxide; 2) mixing the raw material containing calcium oxide with glycerol to obtain a mixture; 3) performing solvothermal modification on the mixture to obtain slurry; and 4) calcining the slurry to obtain the calcium-based absorbent. The calcium-based absorbent with the loose structure is prepared, the preparation process is simple, raw materials are cheap, and the calcium-based absorbent can be applied to large-scale production. The calcium-based absorbent disclosed by the invention has the advantages of high cycle conversion rate, stable pore structure, difficulty in sintering and inactivation, high efficiency, excellent performance, good pollutant treatment effect and the like, and can still keep good gas absorption capacity even if carbon dioxide and sulfur dioxide are circularly absorbed for multiple times.

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 discloses an organic amine-promoted phase separation solvent type carbon dioxide phase change absorbent and application thereof, and relates to the technical field of carbon dioxide capture and separation. The carbon dioxide phase change absorbent comprises a main absorbent, a phase-splitting accelerant and a solvent, the main absorbent is primary amine or secondary amine, the phase-splitting accelerant is tertiary amine or sterically hindered amine, the solvent is water, and a reaction product of the main absorbent and carbon dioxide is insoluble in the phase-splitting accelerant but soluble in the water. According to the organic amine-phase separation promoting solvent type carbon dioxide phase change absorbent, two kinds of organic amine are adopted as a main absorbent and a phase separation promoter respectively, the main absorbent has a main carbon dioxide loading function, and the phase separation promoter mainly plays a role in promoting liquid-liquid phase separation after the main absorbent absorbs carbon dioxide; the carbon dioxide absorption capacity is high, and meanwhile only a small amount of solution needs to be desorbed, so that sensible heat and latent heat of vaporization generated by water heating evaporation during desorption are reduced.

The invention discloses an amino-functionalized ionic liquid-alcohol amine compound absorbent for CO2 capture and a preparation method thereof, the compound absorbent is prepared from a main absorbent alcohol amine, an absorption promoter amino-functionalized ionic liquid and water, the mass concentration of the main absorbent in the compound absorbent is 15-26%, the mass concentration of the absorption promoter in the compound absorbent is 15-26%, and the mass concentration of the absorption promoter in the compound absorbent is 15-26%. The mass ratio of the main absorbent to the absorption enhancer is (1-5): 1. The preparation method comprises the following steps: respectively weighing the main absorbent alkylol amine and the absorption enhancer amino-functionalized ionic liquid according to the ratio, putting the main absorbent alkylol amine and the absorption enhancer amino-functionalized ionic liquid into a container, adding water into the container, uniformly stirring, sealing the container, and carrying out ultrasonic dispersion treatment for 4-6 minutes to obtain the compound absorbent. The preparation method is simple, and the prepared compound absorbent has good carbon capture capability and stability, is compatible with a carbon capture device in industrial operation at present, and has a wide industrial application prospect.

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 discloses lead-free halogen double perovskite near-infrared fluorescent powder and a preparation method thereof, and the chemical general formula of the fluorescent powder is Cs2M1-x-yCl6: xPt < 4 + >, yEr < 3 + >, wherein M is any one of Zr, Sn and Hf, and 0 lt; x is less than or equal to 0.02, 0lt; y < = 0.35. The preparation method comprises the following steps: adding an erbium acetate solution into a platinum tetrachloride solution, and sealing and stirring; adding the obtained solution into an MCl4 solution, and sealing and stirring at 50-70 DEG C; adding a cesium chloride solution, sealing and stirring at 40-60 DEG C, and after the solution is cooled to room temperature, carrying out centrifugal separation and centrifugal washing; and drying at 40-60 DEG C, and cooling. The emission peak of the obtained fluorescent powder Pt < 4 + > well covers the excitation peak of Er < 3 + >, energy is effectively transmitted to a light-emitting center Er < 3 + >, and the light-emitting efficiency of Er < 3 + > is remarkably improved; strong absorption is realized in ultraviolet, near ultraviolet and blue light areas.

The invention discloses a yellowing-resistant and aging-resistant polyurethane resin coating material and a preparation method thereof, and belongs to the technical field of polyurethane resin coating materials, and comprises the following raw materials by weight: 80-100 parts of polyether polyols, 60-80 parts of diisocyanates, 50-70 parts of butyl acetate, 5-8 parts of modified titanium dioxide, 1-2 parts of defoamers, 12-18 parts of chain extenders, 0.2-0.4 parts of ultraviolet light absorbers, and 0.1-0.2 parts of stannous octoate. The coating material is mainly made of polyether polyether and aliphatic diisocyanates, and the aliphatic diisocyanates do not contain benzene rings, thereby improving the yellowing resistance of the polyurethane resin coating material, and adding ultraviolet light absorbers and modified titanium dioxide at the same time, titanium dioxide has extremely strong ultraviolet absorption and infrared reflection characteristics, and the ultraviolet light absorber can release ultraviolet radiation in the form of heat, and the two act synergistically, and can significantly improve the anti-ultraviolet ability of the polyurethane resin coating material, thereby effectively improving the yellowing resistance and aging resistance of the polyurethane material.

The invention provides a hydrogel fruit preservative capable of being sprayed and produced on a large scale as well as a preparation method and application of the hydrogel fruit preservative. The hydrogel fruit preservative comprises the following raw materials: a mixed solvent of polyvinyl alcohol, tannic acid, ethanol and deionized water. The hydrogel fruit preservative disclosed by the invention is simple in preparation method and raw material composition, low in cost, capable of being produced on a large scale, environment-friendly, easy to clean, recoverable, recyclable, capable of quickly forming a film (within 50s), uniform and smooth after film forming, high in mechanical strength, and has the characteristics of being antibacterial, antioxidant, uvioresistant, low in water oxygen transmission efficiency and the like.

The invention relates to the technical field of biomedical materials, in particular to a bionic polyether-ether-ketone dental implant material and a preparation method thereof. The preparation method of the bionic polyether-ether-ketone dental implant comprises the following steps: mixing polyether-ether-ketone, a modified material and glass fibers in ethanol, and drying to respectively obtain composite powder of the modified material and the glass fibers in gradient change; the preparation method comprises the following steps: respectively pressing glass fiber / modified material / polyether-ether-ketone composite powder with different contents into composite powder discs, then stacking layer by layer according to the sequence of the contents of the glass fiber materials from high to low and the sequence of the contents of the modified materials from low to high, and forming to obtain a composite material biscuit; and cutting the composite material biscuit by using CAD / CAM according to a designed implant model to obtain the bionic polyether-ether-ketone dental implant. The invention provides a precise bionic polyether-ether-ketone dental implant material which is gradually changed from neck to root mechanics and aesthetics and has osteogenesis promoting and antibacterial properties.

The invention relates to the field of disposable hygienic products, and provides a production process of an enhanced absorption core body, a paper diaper and pull-ups, and the production process comprises the steps of first polymer carrier conveying, wood pulp blanking, sap blanking, first water absorption particle blanking, second water absorption particle blanking and core body forming. The first water-absorbing particles and the second water-absorbing particles are arranged inside and on the top of the formed core body respectively, the first water-soluble films of the first water-absorbing particles and the second water-absorbing particles are dissolved when encountering water, the water-absorbing inner layer is released and makes contact with the water, water can be rapidly absorbed, the absorption speed and infiltration speed of urine can be greatly increased, and the core body is complex in structure and convenient to use. According to the technical scheme, multiple procedures are not needed for forming, forming is only conducted on the first macromolecule discharging device, the length of equipment is shortened, the production cost is greatly saved, the discharging accuracy of all material positions is improved, and the technical problem that the urine absorption speed of the core is low is solved.

The invention relates to a polyvinyl alcohol composite film of molybdenum diselenide coated WO3 nanosheet containing 1T-MoSe2, a preparation method and application, the molybdenum diselenide nanosheet containing 1T-MoSe2 synthesized by a hydrothermal method is combined with the (100) surface of the WO3 nanosheet to construct a composite material of a heterostructure, the composite material is dispersed in a 10wt% polyvinyl alcohol solution, pouring is performed to obtain a polymer film, and the polymer film is coated with the molybdenum diselenide coated WO3 nanosheet containing 1T-MoSe2. When the thickness of a composite film sample is 500m, the material with the optimal proportion shows effective shielding effectiveness (the shielding effectiveness is greater than or equal to 10dB) within the whole test range of 0.2-1.8 THz, the shielding effectiveness at 1.62 THz can reach 71.48 dB, and the average terahertz shielding effectiveness reaches 43.03 dB. The material has the advantages of light weight, ultra-thinness, strong absorption and the like, and has important value in the fields of terahertz signal shielding of microelectronic devices, stealth coatings and the like.

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.