15 results about "Ion clusters" patented technology

A heating device and a mass spectrometry device of a nanoelectrospray source, the heating device comprising: a support body and a heating body arranged on the support body, the heating body being configured to apply a heating effect to an ion transmission path and being provided with an ion transmission channel for the passage of ions or charged droplets; an ion inlet of the ion transmission channel corresponding to an ion outlet of the nanoelectrospray source, and an ion outlet of the ion transmission channel corresponding to an ion inlet of the mass spectrometer. The heating device can significantly improve the atomization and desolvation capability of the nanoelectrospray source, improve the signal response and repeatability, reduce the ion cluster background noise formed by solvent molecules, improve the sensitivity, and avoid the spray stop and signal loss caused by the heat-sensitive drying of the nanoelectrospray ion source at the end of the spray needle.

The application discloses a branched polyarylpipeidine film containing a multi-aromatic ring unit and a preparation method and application thereof, and belongs to the technical field of fuel cells and anion exchange membranes for hydrogen production by water electrolysis. The branched polyarylpipeidine main chain is constructed by introducing a multi-aromatic ring branched unit with multiple reaction sites into a conventional linear polyarylpipeidine main chain, so that the packing density of the main chain is reduced, the formation of ion clusters is facilitated, and the membrane conductivity is improved. The branching degree can be controlled by flexibly adjusting the feeding of the multi-aromatic ring branched monomer. The conductivity of the branched polyarylpipeidine film is improved by more than 26% compared with that of the linear film, and the branched film has a lower swelling rate, a higher power density of a hydrogen-oxygen fuel cell and a higher water electrolysis hydrogen production performance.

The invention provides an ethylene-(methyl) acrylic acid ionomer and a preparation method and application thereof, the ethylene-(methyl) acrylic acid ionomer is formed by neutralizing part of carboxyl in an ethylene-(methyl) acrylic acid copolymer by cesium ions, and the neutralization degree of the ethylene-(methyl) acrylic acid ionomer is 10-50 mol%. According to the ethylene-(methyl) acrylic acid ionomer, cesium ions serve as neutralizing ions, and ion clusters which are properly dispersed and have strong interaction can be formed in cooperation with a specific neutralization degree, so that the ethylene-(methyl) acrylic acid ionomer has higher energy storage modulus and loss modulus and has more excellent performance in the aspects of mechanical viscoelasticity and damping performance; and excellent processing fluidity and thermodynamic stability are realized.

The invention relates to the technical field of metallocene polyethylene materials, in particular to an FFS heavy packaging film and a preparation method thereof. The problems of balance contradiction between rigidity and impact resistance of a traditional product and narrow heat-sealing window are solved. A finished product is prepared from modified metallocene polyethylene, POE grafted zinc salt ionomer, core-shell structure toughening particles, linear low-density polyethylene, functional filler and a processing aid. Polarization and ionization modification of metallocene polyethylene and POE are achieved through reactive extrusion, and the puncture resistance of the material is improved through the physical cross-linking effect of ion clusters and the multi-stage toughening effect of core-shell particles; and meanwhile, by virtue of the cooperation of the thermal reversibility of the ionomer and a specific film blowing process, the initial temperature of heat sealing is reduced, and the sealing safety problem in a dust environment is solved.

The invention belongs to the field of environmental catalysis and molecular sieve materials, and particularly relates to a copper-based SUZ-4 molecular sieve catalyst for N2O decomposition as well as a preparation method and application of the copper-based SUZ-4 molecular sieve catalyst. The preparation method comprises the following steps: preparing an HSUZ-4 molecular sieve with adjustable crystal size by regulating and controlling silicon source hydrolysis and aluminum source dissolution processes, carrying out hydrothermal post-treatment on the molecular sieve by adopting a mixed solution of nitric acid and copper salt, and preparing a Cu-HSUZ-4 precursor through acid etching, ion exchange and anchoring; and carrying out reduction treatment to realize controllable adjustment of the Cu < + > / Cu < 2 + > ratio, thereby obtaining the catalyst. Copper species in the catalyst mainly exist in the forms of monodisperse ions, Cu ion clusters and sub-nano CuxOy, a metal-acid synergistic active center is jointly constructed by the copper species and reserved Bronsted acid sites, breakage of N-O bonds is effectively promoted, efficient decomposition of N2O can be achieved within 350-500 DEG C, and the catalyst has excellent poison resistance.

In one aspect, an ion guide for use in a mass spectrometer is disclosed, which comprises a first plurality of conductive electrodes disposed on a first surface, a second plurality of conductive electrodes disposed on a second surface, wherein the two surfaces are positioned relative to one another and shaped so as to provide a passageway having an inlet for receiving an ion beam and an outlet through which target ions of interest exit the passageway. The ion guide further includes an orifice formed in at least one of those surfaces through which neutral species and / or large ion clusters, when present in the ion beam, exit the ion guide.

The invention discloses a hemostatic material, hemostatic gauze and a preparation method thereof, and belongs to the technical field of hemostasis. The hemostatic material comprises a multi-element metal organic framework material, the hemostatic gauze is gauze loaded with the hemostatic material; the hemostatic material is obtained by coordination of metal ions or metal ion clusters and ligands. The metal ions comprise aluminum ions and iron ions, and the ligands comprise multi-element ligands; through cooperation of two doped metal ions, multistage hydrophilic sites are constructed, and the hemostatic behavior of the hemostatic material is regulated and controlled; through matching of multi-element ligands, the pore structure of the hemostatic material is regulated and controlled, the water adsorption kinetics of the hemostatic material is improved, and the water adsorption capacity of the hemostatic material is improved. The hemostatic material and the hemostatic gauze have the characteristics of high hemostatic speed and good hemostatic effect. The preparation method has the characteristics of simplicity in operation and easiness in industrialization.

The application discloses an ion migration tube for improving peak separation degree of ion mobility spectrum. Two first and second ion gates are arranged in the ion migration tube, and the ion migration tube is divided into ionization area, migration area and compression area which are sequentially adjacent. A constant axial uniform direct current electric field is formed in the migration area, and ion clusters injected through the first ion gate are separated into multiple sheet-shaped ion clusters with different ion mobility K and transmitted to the second ion gate. The second ion gate is opened for a short time with multiple delays relative to the first ion gate, sheet-shaped ion clusters with different ion mobility K in the migration area are sequentially selected and injected into the compression area for compression correction of ion cluster time domain width, and then rapidly transmitted to an ion receiving electrode for detection. The ion migration tube disclosed by the application can improve the resolution of the ion migration tube and effectively improve the peak separation degree of the ion mobility spectrum.

The present application relates to the field of fluorescent sensing technology, and particularly relates to a Eu(III) metal organic framework crystalline material, a preparation method and application thereof. The Eu(III) metal organic framework crystalline material is formed by assembling a multi-nuclear Eu ion cluster and a polycarboxyl organic ligand, and an asymmetric structural unit thereof comprises a plurality of valence states of Eu ions, monodentate coordination water molecules and partially deprotonated H(DDODA) 3‑ ligands. The Eu(III) is in an octahedral coordination configuration, and the Eu(II) is in a nonahedral coordination configuration, and a trinuclear {Eu3(H2O)5(COO) 18} secondary structural unit is formed by chelation and bridging action of carboxyl oxygen atoms. The secondary structural unit is further connected to form a one-dimensional chain structure through bridging carboxyl of the ligand, and the one-dimensional chains are further connected through carboxyl not participating in bridging and pyridine / pyridine groups, and finally a stable three-dimensional metal organic framework structure is constructed. The Eu(III) metal organic framework crystalline material has good fluorescence properties and stability, and can be applied to the field of fluorescent sensing.

This invention provides a reversible crosslinked foam material, its preparation method, and its application. The method includes: (1) reacting zinc oxide with maleic anhydride to generate ion clusters; (2) grafting the ion clusters with a first batch of ethylene-vinyl acetate copolymer to obtain a reversible crosslinked component; (3) adding a second batch of ethylene-vinyl acetate copolymer, a foaming agent, and a chemical crosslinking agent, followed by mixing, cutting, and foaming to obtain the reversible crosslinked foam material. This reversible crosslinked foam material not only has excellent comprehensive mechanical properties but also exhibits uniform foaming, high porosity, and small average pore size, making it suitable for shoe sole materials. The ionic bonds can decompose under high temperature conditions and recombine at low temperatures, and the quality of the secondary foam material is comparable to that of the primary foam material, effectively improving the efficiency and product quality of EVA waste recycling.

The invention relates to a biodegradable film modified material as well as a preparation method and application thereof. The modified material comprises the following raw materials in parts by weight: 64-99.7 parts of a biodegradable material; 0.1-3 parts of a heat treatment sensitizer; 0.1 to 0.5 part of an antioxidant; 0.1 to 0.5 part of an anti-blocking agent; 0.1-30 parts of an inorganic substance; wherein a heat treatment sensitizer is calcium stearate. Calcium stearate is selected as a heat treatment sensitizer in the components of the modified material, and the calcium stearate has an ionic structure taking Ca < 2 + > as a core, so that after heat treatment, the calcium stearate can form an ion cluster with PBAT ester groups in the biodegradable material to serve as a heterogeneous nucleation site, and migration can be avoided due to high molecular weight and strong interface bonding force; and the compatibility can be optimized in cooperation with inorganic matters, so that the melt index of the modified material is reduced, the processing stability is improved, and the biodegradable film prepared based on the modified material has excellent mechanical properties.

The invention discloses an anion exchange membrane material containing norbornene dibenzocyclobutane polyaryl piperidine as well as a preparation method and application of the anion exchange membrane material, and relates to the field of anion exchange membrane materials for hydrogen production by electrolysis of water. According to the invention, norbornene bis-benzocyclobutane is introduced into a polymer main chain of aromatic hydrocarbon and piperidone to form a distorted and difficult-to-rotate space structure. By adopting the technical scheme, the structural rigidity and larger free volume of a polymer skeleton are improved, the formation of a large number of microporous structures is promoted, the agglomeration of ion clusters is facilitated, more phase separation structures are formed, and the ionic conductivity of the membrane material is improved through the synergistic effect of the two, so that the membrane material is more stable in performance. And meanwhile, the problem of relatively poor dimensional stability caused by excessive water absorption of the membrane material is inhibited, and the prepared anion exchange membrane has a wide application prospect in the field of hydrogen production by water electrolysis.

The embodiment of the invention provides a calcium phosphate ion cluster, a composite film, a hydrogel film and a preparation method and application thereof. The preparation method of the calcium phosphate ion cluster comprises the following steps: adding an adenosine-5 '-disodium triphosphate hydrate into a calcium chloride solution, adjusting the pH value to 9-11, then adding a disodium hydrogen phosphate dodecahydrate solution, maintaining the pH value to 9-11, and keeping for 1-3 hours under a stirring condition to obtain the calcium phosphate ion cluster. In the preparation process of the thin film, an inorganic matter calcium phosphate ion cluster and an organic matter polyvinyl alcohol form an organic-inorganic interpenetrating bicontinuous network structure, so that about 7750 times of heavy objects of own types can be lifted without fracture, and excellent fracture strength and fracture toughness are shown.

The present application relates to the collision of deuterium and the production of tritium. Two beams of deuterium plasma are injected into a rotating magnetic field in opposite directions, and two beams of laser are injected in opposite directions as well. The Lorentz force of the magnetic field on the positive and negative charges in the plasma is in opposite directions, and the effect of the laser tail wave field and the fact that the mass of the electron is much smaller than that of the deuterium nucleus cause the electrons to separate from the deuterium nuclei. The deuterium nuclei form ion clusters after separation, and the positive ion (deuterium nucleus) clusters will undergo a Coulomb explosion. Therefore, the deuterium nuclei are accelerated by the super-strong and super-fast laser in an explosive manner, and part of the deuterium nuclei collide to produce tritium nuclei or helium nuclei.