16 results about "Ion permeation" patented technology

This invention relates to the field of marine engineering subgrade material preparation technology, and discloses a method for preparing high-performance subgrade materials based on fly ash modification. The method includes: spraying atomized activator onto the surface of fly ash particles, using inorganic acid to etch micro-pits on the surface and depositing mineral salts in situ; mixing activated fly ash with aggregates and an alkaline activator to prepare a subgrade mixture; applying high-frequency vibration pressure during compaction to inject the activating force into the micro-pits; and utilizing the osmotic pressure difference generated by the dissolution of mineral salts to drive the hydration products to grow outward from the micro-pits. This invention, through the concentration gradient generated by the mineral salt enrichment layer, causes the hydration products to form a reverse-growth interwoven structure within the pores, achieving a shift from passive barrier to active sealing defense, thereby improving the material's mechanical anchoring strength and resistance to ion penetration in high-salt marine environments.

An ion permeable membrane for selective permeation of a target ion, preferably lithium, through the membrane, the membrane comprising a target ion permeable composite comprises a target ion permeable ceramic and at least one organic polymer associated with the target ion permeable ceramic.

An ion-permeation energy conversion device and its control method based on light and magnetic energy regulation are disclosed. When the ion-permeation energy conversion device is in working condition, the magnetic field strength of the permanent magnet is adjusted to disperse the magnetic nanoparticles, and the concentrator is adjusted to heat the ion-permeation energy conversion device body with photothermal magnetic nanoparticles to improve power generation performance. When the ion-permeation energy conversion device is in non-working condition, the magnetic field strength of the permanent magnet is adjusted to distribute the magnetic nanoparticles at the interface between the nanoselective membrane and the low-concentration reservoir to prevent ion transport, and the concentrator is adjusted to make the light intensity on the nanoselective membrane exceed the threshold to form a reverse driving force, further hindering ion diffusion and synergistically solving the self-discharge problem of the ion-permeation energy conversion device body.

This invention discloses a cement-based two-component grouting material modified with nano-hexagonal boron nitride. The grouting material raw materials include component A and component B. Component A includes cement, retarder, micro-expansion agent, and nano-modified h-BN. Component B includes water glass. The nano-modified h-BN is obtained by ball milling and modification of h-BN. Non-ionic hydrophilic covalently grafted nano-hexagonal boron nitride is used as an external modified filler in the cement-water glass two-component grouting material. It works together with retarders, expansion agents, and other additives to improve the dispersion stability of nano-boron nitride in the cement-based grouting material slurry (high electrolyte environment), thereby improving the dispersion uniformity of nano-hexagonal boron nitride in the stone body. It can retain effective stone components, improve the overall density of the grout after molding, reduce slurry dissolution, inhibit ion permeation rate, reduce environmental damage during grouting, and help maintain ecological balance.

The utility model provides a kind of corrosion -resistant rare earth aluminium copper alloy grounding electrode, through the composite structure of multiple aluminum copper alloy round bar cooperation spiral connecting layer and micropore protective sleeve, significantly improve corrosion resistance, drainage efficiency and installation convenience;Aluminum copper alloy strip's spiral gap is used to guide soil moisture to discharge quickly along the axial direction, reduce the electrochemical corrosion caused by ponding, form complete drainage path in combination with bottom cover drain hole, so that average corrosion rate is effectively reduced;Aluminum copper alloy round bar supports the flexible splicing and depth extension of grounding electrode, avoids welding defects and reduces the construction complexity of conductive carbon fiber reinforced polymer micropore protective sleeve, balance ion permeation and corrosion medium barrier through micropore structure, while carbon fiber reinforced layer ensures overall resistivity, meets electrical performance requirement;The sealing and drainage of top cover and bottom cover are designed in coordination, further prevent external impurities from invading and optimize drainage efficiency.

This invention relates to a flexible, fillable, and rapidly assembled energy storage module and its manufacturing method. The module includes segmented energy storage units, with adjacent units physically connected via connecting components. Each energy storage unit is equipped with a flexible encapsulation assembly, which, when inflated, forms a casting cavity for filling functional materials. A flexible diaphragm bag assembly is located inside the encapsulation assembly. This flexible diaphragm bag assembly is ion-permeable and consists of multiple liquid-permeable flexible diaphragm bags with embedded flexible electrode sheets. Adjacent units are connected via a reconfigurable plug-in electrical connection device to achieve series-parallel logic switching. The functional material filling the energy storage unit is a fluidized solidified soil slurry incorporating ion-conducting electrolytes, possessing both ion conduction and mechanical load-bearing capabilities. This invention integrates flexible forming, filling construction, electrical reconfigurability, and long-term protection, solving the problems of complex installation, fixed electrical logic, and poor protection in irregularly shaped spaces for energy storage systems. It can effectively promote the deep integration of energy storage systems with civil engineering.

A battery separator and a preparation method therefor, and a secondary battery, relating to the technical field of battery separators. The battery separator comprises: a base film; and an inorganic coating provided on at least one surface of the base film. A contact ratio k of inorganic particles to the base film in the longitudinal section of the battery separator is 15-90%; and the relationship among the contact ratio k, air permeability A1 of the base film and air permeability A2 of the coating per unit thickness meets: A1×k≥A2. The separator is improved to a certain extent in peel strength, puncture strength and air permeability, and the battery separator with both safety and high ion permeability is provided.

The application provides a diaphragm for a vanadium redox flow battery and a preparation method thereof, and solves the problems of high vanadium ion permeation rate and high price of the current diaphragm Nafion117 membrane of the vanadium redox flow battery. First, polyether ether ketone particles are completely dissolved in concentrated sulfuric acid to make the two react and generate sulfonated polyether ether ketone, and in the process, the sulfonation degree of the sulfonated polyether ether ketone is controlled by changing the reaction time and the reaction temperature; then the obtained solution is poured into a container containing a large amount of ice water mixture, and stirring is continuously carried out during pouring; after standing, the obtained precipitate is washed to neutral, filtered and dried to obtain the sulfonated polyether ether ketone; and then the obtained sulfonated polyether ether ketone is dissolved in a DMF solution, spin-coated into a film, dried, shaped and peeled to obtain the diaphragm.

The application discloses a kind of low ion permeation amount composite ion conducting membrane and preparation method thereof.The preparation method includes: (1) preparing chitosan intermediate layer on porous membrane support layer, and preparing chitosan / porous membrane composite base film;(2) the aqueous solution containing polyamine monomer and salt, with the organic phase solution containing polyacyl chloride, with the obtained chitosan / porous membrane composite base film as support base film, polymerization reaction occurs at the interface of aqueous phase-organic phase, and then annealing treatment is carried out, to obtain composite nanofiltration ion conducting membrane.The application enhances the wettability of traditional base film, improves the uniformity of the pore size distribution of base film, and further improves the uniformity and compactness of polyamide functional layer, thereby improving the performance of composite nanofiltration ion conducting membrane, and having industrial application value.

The application relates to the technical field of wastewater treatment devices, in particular to a wastewater emission reduction and recovery device for ion-exchange membrane method alkali production wastewater treatment. The device comprises a pretreatment tank and an ion permeation assembly, the ion permeation assembly comprises first-stage, second-stage and third-stage permeation membranes which are sequentially connected in a head-to-tail mode, the water outlet of the pretreatment tank is communicated with the water inlet of the first-stage permeation membrane, the inside of the pretreatment tank is provided with a first-stage filter screen and a second-stage filter screen, the outside of the pretreatment tank is provided with two waste liquid tanks for respectively receiving impurities of the first-stage filter screen and the second-stage filter screen, the liquid outlet end of the waste liquid tank is communicated with the water inlet of the second-stage permeation membrane through a communicating pipe, the communicating pipe is provided with a third-stage filter screen, the communicating pipe is provided with a waste liquid tank for receiving impurities of the third-stage filter screen, the waste liquid tank is provided with a filter-pressing water pumping assembly, and the pretreatment tank and the communicating pipe are provided with a residue discharging assembly. The device can perform multi-stage filtration and recycling on the wastewater, improves the pure water outlet rate, and reduces the discharge amount of terminal concentrated brine.

A method for making a dental appliance configured to position at least one tooth of a patient includes printing a hard-enable liquid resin composition on a major surface of a polymeric material to form a pattern of discrete unhardened liquid regions thereon; at least partially hardening the unhardened liquid regions to form a corresponding array of structures on the major surface of the polymeric material, wherein the structures have a characteristic cross-sectional dimension of about 25 microns to about 1 mm, and a feature spacing of about 100 microns to about 2000 microns; forming an exterior layer comprising a ion-permeable polymeric material on the base polymeric material and the array of structures; and forming a plurality of cavities in the polymeric material to form the dental appliance including an arrangement of cavities configured to receive one or more teeth.

The invention relates to the technical field of biomedical materials, discloses a preparation method of a bone repair mineralized biological membrane capable of inducing gene expression and a product, and aims at solving the problems that an existing bone repair material HAP crystal is difficult to regulate and control, the mechanical activity and the biological activity are not matched, bone induction is weak, the process is complex and the like. The preparation method comprises the following steps: S1, preparing a decellularized small intestinal submucosa (SIS) membrane and sterilizing; s2, constructing a pDA-PAM (at) SIS composite membrane; s3, inducing directional growth of HAP through ion permeation biomimetic mineralization; and S4, cleaning and drying to obtain the HAP / SIS collagen mineralized biological membrane. The product contains an SIS collagen matrix and low-crystallinity nano HAP (the width is 4-20nm, the length is 31-105nm, and the product is oriented along a c axis), the tensile strength is greater than or equal to 13MPa, the elastic modulus is greater than or equal to 75MPa, the specific surface area is greater than or equal to 60m < 2 > / g, and osteogenic genes such as ALP, Runx2 and the like can be up-regulated by more than or equal to 2 times. The method is mild in process, easy to operate, good in biocompatibility, high in bone conduction and inductivity, suitable for large-scale production and capable of meeting the clinical bone defect repair requirement.

An apparatus for electroplating a metal on a semiconductor substrate with high control over plated thickness on a die-level includes an ionically resistive ionically permeable element (e.g., a plate with channels), where the element allows for flow of ionic current through the element towards the substrate during electroplating, where the element includes a plurality of regions, each region having a pattern of varied local resistance, and where the pattern of varied local resistance repeats in at least two regions. An electroplating method includes providing a semiconductor substrate to an electroplating apparatus having an ionically resistive ionically permeable element or a grid-like shield having a pattern correlating with a pattern of features on the substrate, and plating metal, while the pattern on the substrate remains spatially aligned with the pattern of the element or the grid-like shield for at least a portion of the total electroplating time.

The present application relates to the technical field of bioelectric signal monitoring, in particular to an implantable biological membrane wireless monitoring sensor and system based on AgCl / Ag impedance conversion, which comprises an anode integrated module, a cathode verification module, a frequency analysis module, a closed-loop control module and a packaging state evaluation module.In the present application, the implant closed-loop circuit current and biological membrane charge transfer resistance are directly collected to provide original interface information for subsequent analysis, the silver chloride resistivity change rate is detected, the silver / silver chloride antenna resonance frequency offset is synchronously measured, a high-sensitivity abnormality identification mechanism is constructed, the early interface instability or material degradation early warning capability is improved, the circuit phase angle and antenna Q value are extracted after identifying the abnormality, the frequency compensation coefficient is calculated by applying frequency domain least square fitting, the silver chloride / silver conversion rate is controlled, the wireless signal transmission is optimized, the packaging water vapor transmission rate and ion permeation flux are monitored, and the long-term reliability of the implanted device is ensured.