19results about How to "Improve surface wettability" patented technology

The invention discloses a preparation method of a polypropylene coarsened film, belongs to the technical field of preparation of electronic and electrical insulating materials, and particularly relates to preparation of the polypropylene coarsened film. The invention aims to solve the technical problem that the specific preparation process is difficult to regulate and control when the polypropylene coarsened film is prepared at present. By adjusting the heating temperature, the torque, the rotating speed of the motor, the gap between the die head and the machine lip, the temperature of the chilling roller, the casting rotating speed and the winding tension of each area of the extruder, the polypropylene coarsening film which is reasonable in surface appearance and thickness and excellent in dielectric property is obtained, the wettability of the obtained polypropylene coarsening film in insulating oil is good, the dielectric property is excellent, and the service life of the polypropylene coarsening film is prolonged. And the prepared oil-immersed capacitor has good energy storage performance. The polypropylene coarsened film prepared by the invention is mainly used for preparing metallized polypropylene films for oil-immersed capacitors and film capacitors.

The invention discloses a composite additive for a vanadium electrolyte and a preparation method of the composite additive, and relates to the technical field of vanadium batteries. The composite additive is applied to the electrolyte of the vanadium battery, the electrolyte is a positive electrode electrolyte and a negative electrode electrolyte, the concentration of the vanadium electrolyte can be improved, precipitation and crystallization of vanadium ions can be inhibited, and meanwhile, the electrochemical activity of the vanadium battery can be improved. The composite additive comprises a mixture formed by a first component and a second component, the first component comprises at least one of a fluorine-containing compound, oxyacid and oxysalt, and the second component is a surfactant.

The invention discloses a perovskite solar cell, and relates to the technical field of solar cells. The perovskite solar cell comprises a conductive substrate, a hole transport layer, a perovskite light absorption layer, an electron transport layer and a transparent conductive layer which are stacked in sequence, wherein the conductive substrate, the hole transport layer, the perovskite light absorption layer, the electron transport layer and the transparent conductive layer are stacked in sequence; wherein an ionic liquid layer is arranged between the hole transport layer and the perovskite layer, the ionic liquid layer comprises ionic liquid, the ionic liquid comprises imidazole cations and anions, the structural formula of the imidazole cations is shown as a formula I, R1 is selected from C4-C10 alkyl, R2 is selected from C4-C10 alkyl, and R3 is selected from C4-C10 alkyl. And anions are selected from any one of bis (trifluoromethanesulfonyl) imine radical, tetrafluoroborate radical, hexafluorophosphate radical and thiocyanate radical, so that the problem of limited performance improvement of the perovskite solar cell caused by energy level mismatching and interface defects between the hole transport layer and the perovskite layer in the prior art is solved.

This invention relates to the field of ion sieve technology, providing a titanium-based lithium-ion adsorbent, its preparation method, and its applications. The invention involves pyrolyzing NH2-MIL-125(Ti), then mixing it with lithium carbonate for calcination, granulating it using an ethylene-vinyl alcohol copolymer as a binder, and finally acid washing to obtain the titanium-based lithium-ion adsorbent. This invention integrates metal-organic framework (MOF)-derived carbon intercalation, nitrogen doping, and polymer-assisted granulation into a single process, preparing a particulate adsorbent with a hierarchical porous structure, strong hydrophilicity, and abundant active sites, showing great potential for industrial applications. Example results show that the adsorbent of this invention, under conditions of pH=12 and 25℃, exhibits a high Li-ion concentration of 24 h. + The adsorption capacity reached 33.95 mg / g. After five cycles of adsorption and desorption, the adsorption capacity could still reach 96.9% of the initial adsorption capacity, and the titanium dissolution loss in each cycle was only about 0.4%.

The present invention provides a photovoltaic cell and a method for making the same, the method comprising: making a hole transport layer on a conductive substrate, the hole transport layer being a metal oxide; setting a preset hydrophilic amino acid solution on the surface of the hole transport layer, and performing a first heating treatment so that the preset hydrophilic amino acid solution forms a modified layer above the hole transport layer; making a perovskite layer above the modified layer so that the amino acid molecules in the modified layer are connected to the perovskite layer through hydrogen bonds; making an electron transport layer and an electrode structure above the perovskite layer. In the present invention, the amino acid molecules in the modified layer can improve the surface wettability of the hole transport layer, reduce the pores and defects in the hole transport layer, reduce light scattering and change the refractive index of the film layer, improve the light transmittance of the photovoltaic cell and the crystallization quality of the perovskite layer, ensure the matching degree of the energy levels between the hole transport layer and the perovskite layer, facilitate the transmission and extraction of holes, and ensure the power generation efficiency of the photovoltaic cell.

The application discloses a kind of service concrete penetration type anti-freezing protective material and preparation method thereof, belong to concrete protection technical field.The composition of the protective material is: organic silicon modified penetration enhancement component 30~60 parts, nano-crystalline component 10~30 parts, microbial self-repairing component 5~20 parts, composite silane coupling agent 2~8 parts, penetration accelerator 1~5 parts, stabilizer 0.5~3 parts, defoaming agent 0.1~1 part, water 10~50 parts.The application constructs "hydrophobic barrier-crystallization densification-microbial self-repairing" triple synergistic protection system, solves the technical bottleneck that existing concrete protective material penetration depth is shallow, long-acting protection stability is poor, has no active crack repair capacity, construction is complicated, and on-site adaptability is poor.The application preparation process is simple, product performance is stable, cost-effective, can long-acting improve the frost resistance of concrete structure in severe cold area.

The application discloses a fireproof and extinguishing material and a preparation method and application thereof, and belongs to the technical field of fireproof and extinguishing materials. The fireproof and extinguishing material solves the problem of poor high-temperature resistance of the existing fireproof and extinguishing materials. The fireproof and extinguishing material is composed of the following components in parts by weight: fly ash 8-24 parts, modifier 0.1-0.5 parts, connecting agent 1-5 parts, inorganic mineral material 15-45 parts, foaming agent 3-8 parts, thickening agent 1-3 parts, flame retardant 0.5-2 parts and water 15-35 parts. The fireproof and extinguishing material can form a more compact structure during extinguishing, and has excellent extinguishing performance.

The application provides a modification method of nitrocellulose membrane and application thereof in preparation of microRNA nucleic acid test strips, and relates to the technical field of nucleic acid lateral chromatographic detection.The application provides a modification method of nitrocellulose membrane, which comprises the following steps: treating the nitrocellulose membrane under plasma conditions; the power of the plasma treatment is 25-80 W; the pressure of the plasma treatment is 35-70 Pa; and the time of the plasma treatment is 70-350 s.The modification method of the nitrocellulose membrane can effectively improve the surface performance of the nitrocellulose (NC) membrane, significantly enhance the surface wettability of the nitrocellulose membrane, make the nitrocellulose membrane have strong hydrophilicity, improve the loading capacity of probes, and enhance the stability of probe fixation, so that the cost is reduced and the sensitivity and specificity of the microRNA nucleic acid test strip are improved.

The invention discloses a preparation method of a coal rock polished section, which comprises the following steps: before mixing a coal sample which is crushed to a qualified particle size with an adhesive, carrying out pre-wetting treatment on the coal sample by using water or a dextrin solution, stirring to fully wet coal particles, carrying out suction filtration, drying in the shade, mixing the coal particles with the adhesive, putting the mixture into a mold, drying under a room temperature condition, and carrying out sintering to obtain the coal rock polished section. And grinding and polishing to prepare the coal rock polished section. Compared with a national standard method, the polished section prepared after the coal particles are pretreated through the pre-wetting method is more stable in quality, potholes are not formed in the polished surface, flatness is better, surface roughness is smaller, maceral boundaries are clearer, the method is high in operability, and coal rock properties cannot be affected. Water or a dextrin solution is used for pretreatment so as to eliminate air films on the surfaces of the coal particles, enhance the wettability of the surfaces of the coal particles and fundamentally avoid bubbles and pits in the polished section.

This invention belongs to the field of photovoltaic technology and discloses a modification method and its application for improving the energy level matching of the evaporated copper phthalocyanine / perovskite interface. The method includes: laser etching a conductive glass substrate of a predetermined size; after laser etching, ultrasonically cleaning the conductive glass substrate sequentially with glass cleaning solution, copper propylene, and isopropanol; drying and storing for later use; subjecting the dried conductive glass substrate to ultraviolet-ozone treatment, followed by evaporation to obtain a copper phthalocyanine film; spreading a pre-prepared silane-modified nano-dispersion onto the copper phthalocyanine film, and then annealing to obtain the modified film. This invention utilizes the dehydration condensation reaction between silane hydroxyl groups and surface hydroxyl groups to improve the dispersibility and stability of nanoparticles, resulting in a dense, uniform, and highly covered modification layer on the surface of copper phthalocyanine with a wide bandgap.

The invention relates to the technical field of photosensitive resin and preparation thereof, in particular to 3D printing ceramic slurry with moisture-proof photosensitive resin and a preparation method of the 3D printing ceramic slurry, the 3D printing ceramic slurry comprises a hydrophobic monomer, the hydrophobic monomer comprises one or more of trimethylolpropane triacrylate, ethoxylated bisphenol A diacrylate and isobornyl methacrylate; the coating also comprises a diluting monomer, a photoinitiator, an auxiliary agent, a hydrophobic filler and ceramic powder. On one hand, by introducing the hydrophobic monomer, the moisture resistance of the photosensitive resin is remarkably improved, and the water absorption rate is reduced from the source; on the other hand, hydrophobic filler nano silicon dioxide is treated; nano silicon dioxide and a silane coupling agent are mixed and stirred to obtain modified silicon dioxide, so that the dispersity and hydrophobicity of the modified silicon dioxide in photosensitive resin slurry are enhanced. The surface wettability and dispersing performance of the ceramic powder are improved, powder agglomeration is reduced, and the uniformity of the slurry is improved.

The invention discloses a two-component polyurethane resin adhesive for circuit boards and a preparation process thereof, including an A-component adhesive and a B-component adhesive, wherein the A-component adhesive includes a fluoroacrylate monomer, a furan resin, N-(methoxymethyl)-2-acrylamide, hydroxypropyl acrylate, nano-alumina, a dispersant, and an organic solvent; and the B-component adhesive includes 1,3-diisocyanate, glycerol, 3-phenylbenzoic acid, an organic tin catalyst, polyethylene oxide, a defoamer, and an organic solvent. The invention can prepare a two-component polyurethane resin adhesive with high temperature resistance and good wetting and dispersion effect, solves the problems of poor high temperature resistance and unsatisfactory wetting and penetration effect of polyurethane resin, and realizes its application in circuit boards.

The application discloses a preparation method of lithium ion adsorption material and application thereof, and belongs to the technical field of lithium ion adsorption material. The method comprises the following steps: dissolving a spinning polymer in a solvent, adding nano lithium adsorbent powder, performing electrostatic spinning on the obtained spinning suspension liquid, placing the obtained fiber felt in water to perform homogenization, obtaining a nano short fiber dispersion liquid, adding an anionic surfactant to the nano short fiber dispersion liquid, stirring and foaming, adding a cationic polyacrylamide solution to perform flocculation after the foaming is completed, drying the obtained wet foam to obtain a fiber-based solid foam, immersing the fiber-based solid foam in a reinforcing liquid, and then performing filtration and heating drying, so as to obtain the lithium ion adsorption material.

The application discloses a three-dimensional zincophilic current collector composite negative electrode constructed by an electrochemical welding method.The negative electrode structure is connected by electrochemical welding of a copper base and ZnO / C fibers prepared by electrostatic spinning through pre-electrodeposition of zinc.The application is characterized in that zincophilic ZnO / C fibers are prepared by an electrostatic spinning process combined with high-temperature carbonization, and then ZnO / C and copper foil are subjected to "electrochemical welding" by using zinc electrochemical deposition technology, so that a Zn@ZnO / C-Cu negative electrode material is obtained.The application introduces zincophilic sites ZnO and a high-conductivity copper foil into a large specific surface area carbon fiber, and designs a negative electrode structure which is beneficial to higher efficiency of a zinc ion battery.The prepared negative electrode material improves the cycle and rate performance of the zinc ion battery, and promotes further development of the negative electrode material of the zinc ion battery.

This application relates to a hole transport layer, a solar cell, a photovoltaic module, and a photovoltaic system. The hole transport layer includes: a hole transport polymer; and a coordination polymer, which is intertwined with the hole transport polymer to form a self-assembled mixed-phase structure. The hole transport layer provided in this application, on the one hand, allows the structural units of the coordination polymer to capture metal ions at the interface of the perovskite layer, improving the surface wettability of the perovskite solution in the hole transport layer and enhancing the crystallinity of the perovskite film, thereby improving the photoelectric conversion efficiency of the solar cell; on the other hand, the self-assembled mixed-phase structure formed by the intertwining of the coordination polymer and the hole transport polymer achieves lattice contact with the perovskite layer at the hole transport layer / perovskite layer interface, reducing the direct contact area between the hole transport layer and the perovskite layer, thereby reducing non-radiative recombination losses of charge carriers caused by contact and improving the device performance of the solar cell.

The invention belongs to the technical field of electronic materials and devices, and discloses an all-fiber structure vertical organic electrochemical transistor and a preparation method thereof.The all-fiber structure vertical organic electrochemical transistor is composed of a lower electrode layer, a semiconductor active layer and an upper electrode layer, and the upper electrode layer and the lower electrode layer are ion permeable electrode layers; the porous PAN / PVP nanofiber membrane is composed of a porous PAN / PVP nanofiber substrate and a metal conductive layer, the semiconductor active layer is an electrospun PEDOT: PSS / PAm nanofiber membrane treated by DMSO (dimethylsulfoxide); the preparation method comprises the following steps: firstly, respectively preparing the ion permeable electrode layer and the semiconductor active layer, and then assembling the upper electrode layer, the semiconductor active layer and the lower electrode layer into the all-fiber structure vertical organic electrochemical transistor. The vertical organic electrochemical transistor with the all-fiber structure is more compact in structure, higher in channel utilization rate and shorter in ion transport path, and the signal amplification performance and the time response performance of a device are greatly improved.

The invention provides a silver-based micro-nano structure protective quick-dry cleaning agent and a preparation and use method thereof, and belongs to the technical field of preparation and use of molded board cleaning agents. The cleaning agent is composed of isopropanol, ethyl acetate, a nonionic surfactant and a chelating agent. Wherein the mass ratio of the isopropanol to the ethyl acetate is 70: (10-30), the mass of the nonionic surfactant accounts for 5%-15% of the mass of the cleaning agent, and the mass of the chelating agent accounts for 5%-10% of the mass of the cleaning agent. According to the cleaning agent, a basic organic solvent system is reasonably constructed, and a proper amount of nonionic surfactant and complexing agent are introduced, so that organic dirt, adhesive residues and oxide layers are efficiently removed, and meanwhile, the surface appearance stability and reflection integrity of patterns of a silver-based micro-nano structure are maintained.

This invention relates to the field of solar cell technology, specifically to a hole transport layer containing betaine hydrochloride additive and its inverse wide-bandgap perovskite solar cell. The hole transport layer comprises a nickel oxide layer and a self-assembled molecular layer formed on its surface. The self-assembled molecular layer contains (4-(3,6-dimethyl-9H-carbazole-9-yl)butyl)phosphonic acid and betaine hydrochloride. The introduction of betaine hydrochloride improves the conductivity of the hole transport layer through the interaction of its carboxylic acid groups with nickel oxide, and inhibits its clustering behavior through interaction with the self-assembled molecules, thereby improving film uniformity and effectively passivating buried interface defects in the perovskite light-absorbing layer. The inverse wide-bandgap perovskite solar cell fabricated based on this hole transport layer exhibits significantly improved open-circuit voltage and fill factor, ultimately achieving a photoelectric conversion efficiency exceeding 21.7%. This invention provides an effective interface engineering strategy for fabricating efficient and stable wide-bandgap perovskite solar cells and tandem devices.