12results about How to "Barrier migration" patented technology

The invention discloses a preparation method of magnetic graphene capable of being oriented in a magnetic field. The method comprises the following steps: firstly, coating magnetic particles with tetraethyl orthosilicate, then grafting phenyl-containing siloxane, and combining the magnetic particles with graphene through a pi-pi stacking effect of a non-covalent bond between the phenyl and a benzene ring of the graphene to prepare the magnetic graphene. The magnetic graphene is sprayed on the surface of a concrete matrix after being combined with a coating, and can be oriented along the surface of the concrete matrix under the action of an electromagnetic field to form a dense graphene protective layer. Multiple protection effects are formed in a transverse space parallel to the plane of the base body and a longitudinal space perpendicular to the plane of the base body, the service life of the concrete is prolonged, and the maintenance cost of the concrete is reduced.

The invention belongs to the technical field of flow battery energy storage, and more specifically relates to a near-neutral total iron flow battery negative electrode electrolyte and a preparation method thereof, the negative electrode electrolyte is prepared from an iron salt, a chelating agent, a stabilizing agent, a supporting electrolyte and water at a certain temperature, the total iron concentration is 0.1-1.0 M, the molar ratio of the chelating agent to the iron salt is 1.2-2.0, the molar ratio of the stabilizing agent to the supporting electrolyte is 1.2-2.0, and the total iron concentration is 0.1-1.0 M. The molar ratio of the stabilizer to Fe is 0.25-1.0, the supporting electrolyte concentration is 0-2.0 mol / L, and the pH value is 7.0-8.5. The near-neutral negative electrode electrolyte for the total-iron flow battery is high in stability, can effectively inhibit generation of ferric hydroxide precipitates under a neutral condition, improves the stability of iron ions, greatly prolongs the cycle life of the total-iron flow battery, and can be widely applied to various aqueous flow batteries.

The invention relates to the technical field of electrochromic materials and glass preparation, in particular to a preparation method of sandwich type all-solid-state inorganic electrochromic glass which is formed by sequentially compounding a tempered glass layer, a film layer and an electrochromic film layer pile. The thickness of the tempered glass layer is 4 mm, and the film layer is a PVB film and is 0.76 mm thick. The electrochromic film layer stack takes sodium-calcium non-tempered glass with the thickness of 3mm as a substrate, and an anti-ion diffusion layer, a first conductive layer, a first resistive layer, a negative electrode color changing layer, a second resistive layer, a positive electrode color changing layer, a third resistive layer, a second conductive layer and an outermost protective layer are sequentially arranged on the surface of the substrate from inside to outside; the anti-ion diffusion layer is a silicon dioxide layer, and the thickness is 200 nm. According to the preparation method of the sandwich type all-solid-state inorganic electrochromic glass provided by the invention, through precise design of each film layer structure of the glass and gradient optimization of a preparation process, the comprehensive performance of a product is synergistically improved, and many problems in the prior art are effectively solved.

The invention provides a proton conduction composite membrane for a flow battery and a preparation method thereof, and the method comprises the following steps: dissolving polyvinylidene fluoride and a first modified additive in a first organic solvent, and stirring for the first time to obtain a first membrane casting solution; dissolving polybenzimidazole and a second modified additive in a second organic solvent, and stirring for the second time to obtain a second membrane casting solution; the preparation method comprises the following steps: coating a flat carrier surface with a first membrane casting solution, carrying out tape casting to form a first thin layer, carrying out first-time baking oven heating until the first thin layer is completely dried to obtain a base membrane, coating a second membrane casting solution on the base membrane surface, carrying out tape casting to form a second thin layer, and carrying out second-time baking oven heating until the second thin layer is completely dried. The membrane surface resistance is greatly reduced, the coulombic efficiency of the flow battery is improved, the stable operation life of the flow battery is prolonged, the production cost is low, the technological process is simple and controllable, the membrane performance is stable and reliable, the battery efficiency is remarkably improved, the technical industrialization amplification difficulty is low, and automatic continuous production can be realized.

The invention relates to a laser-carved automotive trim polyurethane synthetic leather and a preparation method thereof, a predetermined pattern is formed on the laser-carved automotive trim polyurethane synthetic leather through a laser-carved process, and the laser-carved automotive trim polyurethane synthetic leather sequentially comprises a surface treatment layer, a surface layer, a transparent barrier layer, a foaming layer and a base cloth layer from outside to inside. According to the invention, the transparent barrier layer is arranged on the foaming layer, so that color migration generated by laser etching in a high-temperature oxidation process can be effectively blocked, and stable colors of different batches of products after laser etching are ensured.

The invention provides water-based ink for PVC (polyvinyl chloride) wood-grained paper and an application method of the water-based ink, and the water-based ink for the PVC wood-grained paper comprises the following components in percentage by mass: 1%-5.5% of a coloring agent, 2.5%-12% of hot-melt polyurethane, 3%-9% of acrylic resin and 3%-5% of isocyanate. The acid value of the hot-melt polyurethane is 15-30 mgKOH / g, and the acid value of the acrylic resin is 15-60 mgKOH / g. The ink realizes ultrahigh and lasting adhesive force on PVC grainy paper, has strong stripping force with a protective film, keeps good printing fluency, and effectively resists intrinsic aging factors such as plasticizer migration and the like.

The invention provides a perovskite solar cell, a preparation method thereof and a perovskite photovoltaic module comprising the perovskite solar cell, the perovskite solar cell comprises a conductive substrate, a perovskite layer, an interface packaging layer and a metal electrode layer, and the interface packaging layer is adjacent to the metal electrode layer; the material of the interface encapsulation layer comprises functional groups which can form an anchoring effect with the metal electrode, and the functional groups comprise any one or a combination of at least two of a thiol group, a phosphino group, an amido group, an acylamino group or a cyano group. In the perovskite solar cell provided by the invention, the material of the interface encapsulation layer comprises a functional group which can form an anchoring effect with the metal electrode, and the material of the interface encapsulation layer can also interact with lead ions, so that migration of iodide ions and the metal electrode can be effectively blocked, and reaction caused by direct contact of the iodide ions and the metal electrode is avoided; and meanwhile, lead can be prevented from leaking to the external environment, so that the stability and the safety of the perovskite photovoltaic module are remarkably improved.

The utility model discloses a biogas slurry fertilizer making device based on double-membrane coupling. The device comprises a preheating unit, a feeding side membrane contactor, an absorption side membrane contactor, a gas circulation pipeline, a negative pressure gas pump and a rear end crystallization fertilizer making system. Hydrophobic microporous membrane components are respectively arranged in the feeding side membrane contactor and the absorption side membrane contactor; the gas circulation pipeline is communicated with the gas cavities on the two sides to form a closed loop, and gas circulation is driven by the negative pressure gas pump. And the rear-end crystallization fertilizer preparation system is communicated with the acid liquid cavity of the absorption side membrane contactor and is used for preparing the extracted nutrients into a solid fertilizer. According to the utility model, the closed circulating air flow is used as an intermediate medium, so that the direct contact between the biogas slurry and the acid absorbent is thoroughly avoided, the efficient separation of high-concentration ammonia nitrogen in the biogas slurry and the conversion of high-added-value fertilizer are realized on the premise of not additionally adding chemicals to adjust the pH value, and the system has excellent thermodynamic energy efficiency and energy self-sufficiency characteristic.

The invention discloses a composite coating as well as a preparation method and application of touch packaging paper, the composite coating comprises a waterproof coating and a touch coating: the waterproof coating comprises the following raw materials in parts by mass: 30-35 parts of first film-forming resin, 10-15 parts of a first ketone solvent, 40-50 parts of an aromatic hydrocarbon solvent, 4-6 parts of a second ketone solvent and 1-5 parts of a matting agent; the tactile paint comprises the following raw materials in parts by mass: 30-35 parts of second film-forming resin, 60-65 parts of a dispersing agent, 0.1-5 parts of a modifying agent and 0.1-5 parts of a sterilizing agent, and the waterproof paint and the tactile paint in the range are adopted to respectively form a waterproof layer and a tactile coating, so that on the premise of ensuring the processing feasibility, the tactile paint can be applied to the waterproof layer and the tactile coating. And excellent physical stability and high-end sensory quality are synchronously achieved, and the method is particularly suitable for electronic product inner packaging scenes with strict requirements for flatness, touch feeling and reliability.

The invention relates to a multifunctional sample reaction plate preparation platform. The multifunctional sample reaction plate preparation platform comprises a sample transfer module, a reagent adding module, a drying module and a heat sealing module. The sample pipetting mechanism is detachably connected with the sample liquid sucking and spraying driving mechanism through the pipetting head quick-changing equipment; the reagent adding module comprises a reagent pipetting mechanism, a reagent pipetting needle and a reagent pipetting chamber which are communicated, the reagent pipetting chamber is provided with a reagent pipetting structure, and the reagent pipetting structure can provide pressure for the reagent pipetting chamber, so that a reaction reagent in the reagent pipetting chamber is sprayed out through the reagent pipetting needle; the drying module is used for drying a biological sample in a sample plate of the drying preparation station, and / or drying a biological sample in a reaction plate of the drying preparation station; and the heat sealing module is used for sealing the reaction plate at the heat sealing station. The flux is not limited, the plate making speed is high, sample evaporation loss and aerosol-mediated cross contamination are avoided, and meanwhile, the concentration of a reaction reagent is not easy to dilute.

The present application belongs to the technical field of saline soil slope protection, and relates to an ecological slope protection structure of soybean enzyme-vegetation-anti-slide pile combined reinforcement of saline soil slope and a construction method thereof. The ecological slope protection structure comprises a vegetation layer, a soybean enzyme solidified coarse particle layer, a vegetation base layer, a soybean enzyme solidified fine particle layer, a gravel layer, an anti-slide pile and a saline soil slope body. The anti-slide pile passes through the soybean enzyme solidified coarse particle layer, the vegetation base layer and the soybean enzyme solidified fine particle layer from top to bottom in sequence, and is longitudinally embedded in the bearing layer of the saline soil slope body. The vegetation layer is formed by sowing plant seeds on the surface of the soybean enzyme solidified coarse particle layer and the growth of the plant seeds in the vegetation base layer. The anti-slide pile is nested with each soil layer, and is supplemented by the anchoring effect of the vegetation roots to form an overall frame structure slope protection system. The present application provides a saline soil slope ecological slope protection structure with reasonable structural mechanical properties, good integrity, impermeability, salt isolation capacity and conformity with the ecological development concept.

The invention discloses a high-activity, self-sodium-modified and self-crosslinked calcium bentonite-based barrier material as well as a preparation method and application thereof, and belongs to the technical field of geotechnical engineering materials. The calcium bentonite-based barrier material comprises the following raw materials: in-situ soil, calcium bentonite, sodium persulfate, ferrous sulfate, citric acid and carboxymethyl cellulose in a mass ratio of (80-90): (10-20): (2-4): (0.1-0.2): (0.02-0.04): (2-4). The calcium bentonite is directly used as a raw material, high activity, self-sodium modification and self-crosslinking effects can be realized, so that the anti-seepage performance is improved, a certain repairing and degrading effect is achieved, the whole preparation process is simple, direct and simple mixing is achieved, and complex processes such as high temperature and grinding are not needed.