52 results about "Polymer insulation" patented technology

The invention discloses a composite copper foil current collector and a preparation method thereof, a negative electrode, a lithium ion battery and electric equipment, and belongs to the technical field of batteries. The composite copper foil current collector comprises a polymer composite layer which comprises a polymer layer and a conductive material layer, the polymer layer has two opposite surfaces, and the conductive material layer is attached to at least one surface of the polymer layer; the polymer composite layer is provided with a first surface and a second surface which are opposite; and the copper layer is attached to the first surface and the second surface of the polymer composite layer. The conductive material is introduced to the surface of the polymer base material and then copper plating is performed, so that the binding force is stronger compared with the binding force between the polymer and copper; meanwhile, the conductive material is compounded on the polymer base material and replaces part of the polymer insulating material to form a coherent conductive network, so that the composite copper foil current collector has higher conductivity; volume expansion hardly occurs in the charging and discharging process, active substances are prevented from falling off from the current collector, and the cycling stability of the battery is improved.

The invention discloses a polymer insulating material degradation evaluation method, a storage medium and computer equipment, and the method comprises the steps: obtaining an actual working condition of a to-be-evaluated polymer insulating material, determining a to-be-applied axial temperature gradient field based on a temperature change range, and determining a to-be-applied dynamic stress loading amount based on a stress change range; after simultaneously applying an axial temperature gradient field and a dynamic stress loading amount to the to-be-evaluated polymer insulating material, capturing an electrical tree image after the to-be-evaluated polymer insulating material is applied in real time; and based on the electrical tree image, calculating an accumulated damage value of the to-be-evaluated polymer insulating material, and taking the calculated accumulated damage value as an insulation degradation evaluation result of the polymer insulating material. The insulation deterioration degree of the polymer insulation material is represented by applying a multi-coupling scene of heat and mechanical stress and constructing an accumulated damage index based on the electric tree, and the deterioration degree evaluation precision is improved.

The invention provides a preparation method and device of a stretchable conductive interface. The method comprises the following steps: pouring a stretchable polymer solution or a precursor mixture of silica gel into a gradient polytetrafluoroethylene mold on a horizontal table, and standing to form a stretchable polymer film with a gradient thickness; covering the surface of the stretchable polymer film with an electrode patterning mask, and depositing a conductive circuit on the surface of the stretchable polymer film through vacuum thermal evaporation or magnetron sputtering to form a microcrack gold conductive layer covering the surface of the stretchable polymer film, so as to complete electrode patterning and obtain a gradient gradient flexible electrode; and after one end, with the large thickness, of the stretchable polymer film of the gradient gradient flexible electrode is connected with a flexible printed circuit board FPCB, the surface of the gradient gradient flexible electrode is covered with a polymer insulating layer film with the modulus matched with that of the substrate for packaging protection, and preparation of the stretchable conductive interface is completed. Stress can be effectively dispersed, and the mechanical stability and durability of a connector are improved.

The utility model relates to the technical field of polymer evaluation devices, and discloses a mold for evaluating the insulativity of a polymer, which comprises a first module, a second module, a conductive insert and an injection piece, according to the invention, the conductive insert is arranged in the cavity, so that the polymer can be directly formed on the outer surface of the extension part of the conductive insert, and the condition of an insulating layer when the polymer is formed on a product can be simulated; the conductive insert is provided with the first conductive part and the second conductive part, the conductive insert is provided with the first conductive part and the second conductive part, so that the power-on test in different aging environments can be carried out only by connecting the first conductive part and the second conductive part with the power supply, and the test efficiency is improved. Or the first conductive part and the polymer insulating layer are connected with the power supply to carry out the polar region power-on test, and the whole power-on test process is very convenient.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof, and belongs to the technical field of polymer insulation. The material is prepared from the following components in parts by weight: 75 to 99.5 parts of polypropylene and 0.5 to 25 parts of imidazole monomers. According to the material, the imidazole monomer is introduced into the polypropylene by a simple and practical technology, so that the batch production of the modified PP is realized; due to the introduction of the imidazole monomer, a charge trap can be constructed in a polypropylene matrix, the mechanical property of the polypropylene matrix is improved, and the high-voltage resistance of PP in a high-temperature environment is improved; the introduction of the polar monomer improves the polarity of the PP, enhances the dielectric property of the PP, and can well inhibit the loss so as to greatly improve the energy storage density. And putting the modified polypropylene particles into a melt extrusion casting film machine to prepare the modified polypropylene film for subsequent performance detection. The power capacitor film provided by the invention has excellent electrical properties, and has high-density deep charge trap, high direct current breakdown field strength, high energy storage density and low energy loss in a high-temperature environment.

Described herein are devices for applying an alternating electric field to a living subject or an in vitro medium at a frequency between 100 kHz and 500 kHz. Also described herein are methods of using the described devices for applying an AC electric field to a target region comprising rapidly dividing cells, e.g., cells associated with a variety of disorders or conditions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

The application discloses a space charge distribution calculation method based on tunneling effect and hole extraction restriction, and belongs to the technical field of electrical engineering, and comprises the following steps: a one-dimensional finite element structure model is established, taking polymer material as a main body and electrodes as boundaries; a periodic polarity reversal voltage is applied at the electrode boundary by coupling Maxwell electromagnetic field theory and Nernst-Planck theory, and a recombination carrier injection model and a hole extraction restricted boundary condition are introduced, so that a polymer material space charge distribution model based on tunneling effect and hole extraction restriction mechanism is obtained; and the polymer material space charge distribution model is solved to obtain the space charge distribution and electric field distortion law of the polymer material under the conditions of strong electric field and polarity reversal. The method solves the problem that the existing space charge model cannot effectively depict the tunneling emission and hole extraction restriction effect at the electrode interface, and provides important support for the polymer insulation aging research under the conditions of strong electric field and polarity reversal.

This invention discloses a method and system for predicting the carrier mobility of polymer insulating materials. The method includes the following steps: obtaining an amorphous polymer insulating molecular dynamics model; calculating the recombination energy and free energy difference parameters of each polymer molecule; calculating the charge transfer integral parameters between each pair of adjacent polymer molecules; calculating the electron and hole transfer rates between each pair of adjacent polymer molecules according to classical Marcus theory; performing a dynamic Monte Carlo simulation on the polymer insulating molecular dynamics model, and calculating the carrier mobility of the polymer insulating material based on the obtained electron and hole transfer rates between adjacent polymer molecules. This invention solves the technical problems of existing technologies, such as susceptibility to external interference, the need for precision instruments, high testing costs, and the inability to distinguish the contributions of electrons and holes to mobility.

The utility model discloses a heat-preservation energy-saving aluminum-clad wood window heat-preservation structure, and belongs to the technical field of building doors and windows. The problems that a traditional window is prone to causing heat loss, energy consumption increase and water seepage are solved. A window sash is arranged in the window frame, glass is arranged in the window sash, the heat preservation layer is arranged in a gap between the window frame and the window sash, the sealing assembly is arranged on the contact edge of the window frame and the window sash, and the heat preservation layer comprises a macromolecule heat preservation foam layer, an air heat insulation layer and a reflecting layer which are sequentially arranged from inside to outside. The energy-saving and environment-friendly energy-saving window can reduce loss of indoor heat, can effectively prevent heat transfer, and has an excellent heat preservation effect. External air and moisture are effectively prevented from entering a room, and the air tightness and water tightness of doors and windows can be effectively improved. The window has excellent durability and corrosion resistance, and the service life of the window is prolonged. The window is simple in structure, attractive, practical and easy to install, the natural aesthetic feeling of wood is reserved, meanwhile, the functionality of the window is improved, and the double requirements of modern buildings for attractiveness and practicability are met.

To provide a flexible metal-clad laminate and a method for manufacturing a flexible copper-clad laminate by thermocompression molding an insulating layer made of a liquid crystal polymer and a copper foil having a surface root mean square gradient (Sdq) within a predetermined range, thereby achieving both sufficient peel strength between the liquid crystal polymer insulating layer and the copper foil, and solder heat resistance.SOLUTION: Provided is a flexible metal-clad laminate comprising an insulating layer made of a liquid crystal polymer and a metal layer laminated on one or both sides of the insulating layer, wherein the surface of the metal layer that overlaps the insulating layer has a root mean square gradient (Sdq) of 0.17 or more and 0.82 or less, measured in accordance with ISO 25178-2:2021, and a method for manufacturing the same is also provided.SELECTED DRAWING: None

Systems for catheter splines are disclosed herein. A catheter spline includes a body made of a superelastic conductive metal material, an insulating polymer jacket made of one or more chemically compatible polymer materials in layers, and an organosilane coupling material coupling the superelastic conductive metal material to the insulating polymer jacket. A catheter includes at least two catheter splines configured in forming a polymer-insulated basket structure with a plurality of individual electrodes and / or an electrode basket structure with splines being relatively large electrodes themselves.

Described herein are devices for applying an alternating electric field to a living subject or an in vitro medium at a frequency between 100 kHz and 500 kHz. Also described herein are methods of using the described devices for applying an AC electric field to a target region comprising rapidly dividing cells, e.g., cells associated with a variety of disorders or conditions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Exemplary semiconductor processing chambers may include a chamber body defining a substrate processing region. The chambers may include a substrate support positioned within the substrate processing region. The substrate support may include a ceramic or polymeric insulator plate positioned between a cathode assembly and an electrostatic chuck assembly. The chambers may include an acoustic emission probe in contact with the insulator plate of the substrate support.

The invention discloses a direct-current cable factory joint insulation interface space charge suppression method based on electric field induction, and belongs to the technical field of cable insulation. The method comprises the following steps: heating a polymer insulating material to a molten state, injecting the polymer insulating material into a mold and pouring the polymer insulating material on an insulating surface of a cable body; an external electric field of 0.1-2 kV / mm is applied in the process of recovering insulation formation, and cooling is conducted at the speed of 0.1-10 DEG C / min after heat preservation induction; and when the temperature of the mold is reduced to 25-50 DEG C, the electric field is removed, and the factory joint with the interface space charge suppression performance is formed. The invention also relates to a direct-current cable factory joint structure prepared by adopting the method and a preparation device of the direct-current cable factory joint structure. According to the method, the interface structure between the recovery insulator and the body insulator is adjusted by applying the electric field, so that charge accumulation is effectively reduced, electric field distortion is reduced, and the electrical performance and reliability of the cable factory joint are improved. The method has the advantages of simple process, high controllability and easiness in practical engineering application.

The invention discloses a preparation method of an organic electronic device with visual detection packaging, and belongs to the technical field of electronic device packaging materials. The preparation method comprises the following steps: mixing an organic long afterglow material and a water-oxygen permeable polymer doped material in a solvent to prepare a visual marking solution, and introducing the visual marking solution to the surface of an organic electronic device to be packaged to form a visual marking layer; and introducing a polymer insulating material for isolating water and oxygen on the visual marking layer, and carrying out annealing treatment to form a packaging layer so as to obtain the organic electronic device with visual detection packaging. The packaging integrity of the device can be judged by observing whether the visual mark has afterglow or not: if the visual mark has afterglow, the packaging is complete, and no water and no oxygen permeate; and if no afterglow exists, the packaging is invalid, water and / or oxygen permeates into the packaging, and internal devices are possibly damaged. According to the preparation method, the packaging effect of the organic electronic device is convenient to observe.

This invention provides a simulation method for analyzing changes in the flame retardant properties of polymer insulation materials during aging based on intermolecular forces. The method involves three aspects: 1) simulating and analyzing microscopic parameters related to intermolecular forces during the aging process of polymer insulation materials; 2) analyzing the evolution of intermolecular forces during the aging process of polymer insulation materials; and 3) establishing a structure-activity relationship between intermolecular forces and flame retardant properties of polymer insulation materials. This method provides theoretical guidance for understanding the influence of intermolecular forces on the properties of polymer insulation materials during aging.

The invention discloses a polypropylene composition as well as a preparation method and application thereof, and belongs to the technical field of polymer insulation. The polypropylene composition is prepared from the following components in parts by weight: 1000 to 1005 parts of polypropylene, 1.5 to 2 parts of antioxidant, 5 to 6 parts of cyclic anhydride monomer, 2.5 to 10 parts of polybenzene ring compound and 3 to 4 parts of peroxide. According to the polypropylene composition, the cyclic anhydride monomer and the multi-benzene-ring compound are introduced into the polypropylene at the same time, the polar group of the cyclic anhydride monomer can inhibit injection and accumulation of space charges in the polypropylene and generation of electrical branches, and the multi-benzene-ring compound weakens damage of high-energy electrons to polymer molecular chains so as to store more electric energy; through the synergistic effect of the cyclic anhydride monomer and the polybenzene ring compound, the direct-current breakdown field strength and high-temperature resistance of the polypropylene composition and a thin film prepared from the polypropylene composition can be improved, and meanwhile, the energy density and the charge-discharge efficiency of the polymer capacitor thin film are improved, so that the requirements of high energy density, high charge-discharge efficiency and high-temperature resistance in industrial application are met.

The invention provides a surface damage self-diagnosis insulating material as well as a preparation method and application thereof. The surface damage self-diagnosis insulating material comprises a silicon rubber base material, microcapsules and an alkali reagent, wherein the microcapsules and the alkali reagent are dispersed in the silicon rubber base material; the microcapsule comprises a shell and a core material, the shell is a urea-formaldehyde resin polymer, and the core material comprises 2 ', 7'-dichlorofluorescein and ethyl phenylacetate. The mass fraction of the microcapsule in the silicone rubber matrix is 1-10%, and the mass fraction of the alkali reagent in the silicone rubber matrix is 1-10%. According to the surface damage self-diagnosis insulating material provided by the invention, the microcapsule component is added into an existing silicone rubber material, so that the composite material has a damage self-diagnosis function on the premise that the mechanical property and the insulating property are kept good, and red can be displayed as an indication after the material is damaged; the method is of great significance in detection of insulation damage of power equipment, early warning of faults and improvement of use safety and reliability of polymer insulation materials.

This invention provides a high-permeability multilayer flexible soft magnetic film, its preparation method, and its applications. The multilayer flexible soft magnetic film is composed of alternating layers of magnetic metal layers and polymer insulating dielectric layers. Each magnetic metal layer is precisely controlled to be 200–900 nm thick, and each polymer insulating dielectric layer is controlled to be 100–500 nm thick, with the total thickness of the magnetic metal layers accounting for 30%–80%. Through this structural design, the polymer insulating dielectric layer effectively blocks interlayer eddy current paths, significantly suppressing high-frequency eddy current losses. Simultaneously, the high proportion of magnetic layers provides sufficient magnetic flux and magnetic loss contribution, avoiding insufficient magnetic performance due to excessively thick insulating layers or exacerbated eddy current losses due to excessively thick magnetic layers. Therefore, the imaginary peak value of the film's effective permeability is greater than 400, exhibiting excellent high-frequency magnetic loss, wave absorption, and noise suppression capabilities. Furthermore, the structure is stable and flexible, making it suitable for high-frequency filtering, electromagnetic compatibility, and other applications.

Disclosed herein are systems for catheter-like leads. The catheter-like leads include a body made of a super-elastic conductive metallic material, an insulating polymeric sheath made layer-by-layer from one or more chemically compatible polymeric materials, and a silane coupling material that couples the super-elastic conductive metallic material to the insulating polymeric sheath. The catheter includes at least two catheter-like leads configured to form a polymeric-insulated basket structure with a plurality of individual electrodes and / or an electrode basket structure of leads that are themselves relatively large electrodes.

Described herein are electrically insulated metal products and methods for preparing electrically insulated metal products. The electrically insulated metal products can include a multilayer polymeric insulating structure, including a joining layer and a top polymer layer, disposed over a metal base layer to provide electrical insulation to the metal base layer, such as using a process of laminating the polymer film over the metal base layer. The multilayer polymeric insulation structure and metal base layer can be subjected to annealing after lamination to improve adhesion performance.

The invention discloses a 3D printing manufacturing method of a quadrupole rod mass analyzer for a QTRAP composite mass spectrum system, and belongs to the technical field of mass spectrometer core component manufacturing. Aiming at the problems of low machining and assembling precision, limited material performance, serious thermal mismatch, insufficient structural design freedom degree and the like in traditional quadrupole rod manufacturing, a metal electrode rod is printed by adopting a selective laser melting technology, and high-precision forming is realized through pre-deformation compensation and electrolytic polishing; printing a PEEK-like insulating support structure by adopting a photocuring technology to form functional structures such as self-concentric positioning, internal dot matrix, stress release and the like; and then precise assembly is carried out through a thermal compensation flexible fastening system. Integrated high-precision manufacturing of the metal electrode and the polymer insulation structure is achieved, the electric field uniformity, the structural reliability and the thermal stability are remarkably improved, and the strict requirements of a QTRAP system for ion transmission efficiency and quality analysis precision can be met.

This suppresses short circuits between electrodes that detect capacitance. [Solution] The problem is solved by a servo accelerometer that detects the displacement of a pendulum by capacitance, where the inertial force generated in the pendulum and the Lorentz force generated by the current flowing through the torque coil wrapped around the torque cup and the magnetic field passing through the yoke are in equilibrium, and the pendulum is equipped with a thin film electrode 10d for detecting capacitance, the yoke is equipped with electrode surfaces 15e and 16e that detect capacitance and are paired with the thin film electrode 10d, and the surface of the thin film electrode 10d is equipped with a polymer insulating layer 40 made of polymer material.

Described herein are devices for applying an alternating electric field to a living subject or an in vitro medium at a frequency between 100 kHz and 500 kHz. Also described herein are methods of using the described devices for applying an AC electric field to a target region comprising rapidly-dividing cells, e.g., cells associated with a variety of disorders or conditions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

The invention discloses an RDL layer preparation method based on selective chemical plating, and belongs to the field of microelectronic integration. The implementation method comprises the following steps of: depositing a polymer insulating layer on the surface of a wafer; adopting a photoetching process to enable the photoresist to cover a non-copper interconnection line area on the polymer insulating layer; taking the photoresist as a mask, etching a groove required by the copper interconnection line on the insulating layer by using an oxygen plasma etching process, but not cleaning the photoresist to obtain the insulating layer with the groove; depositing a layer of catalyst on the surface of the insulating layer; the residual photoresist is stripped by acetone, so that the catalyst outside the groove and the residual photoresist are stripped together, and only the groove is internally provided with the catalyst; a chemical copper plating solution without a catalyst is used for soaking, only a reduction reaction occurs in an insulating layer groove to grow copper, and the copper does not grow outside the groove, so that the groove is filled with the copper, a copper interconnection line is formed, and the preparation of the RDL layer is realized. The method has the advantages of high process efficiency, low cost, high precision, no need of chemical mechanical polishing and the like.

The present invention belongs to the technical field of polymer insulation materials, and specifically discloses an epoxy insulation material with high toughness and high insulation strength and a preparation method thereof. The present invention constructs a side chain structure by grafting single-ended amine-terminated linear alkyl groups of different chain lengths at a specific molar ratio onto a fluorine-containing epoxy resin, and then adopts a step-curing process to form a three-dimensional cross-linked network with a curing agent under the action of a accelerator. The fracture toughness is significantly improved by utilizing the chain extension effect of the epoxy body during the side chain grafting process and the uniform microphase separation structure formed by the self-assembly of the long alkyl side chains during the curing process; at the same time, the steric hindrance of the short alkyl side chains and the synergistic effect of the fluorine atom charge trap inhibit the delocalized electron transmission of the conjugated structure of the benzene ring, and the insulation performance is simultaneously enhanced. Compared with traditional toughening technology, it effectively avoids the insulation degradation caused by toughening modification, and provides high-voltage electrical equipment with an epoxy resin material that has both mechanical reliability and insulation stability.

An insulator that supports a line from a pin includes a core that defines an opening configured to receive the pin, and includes a shell formed from a polymer disposed over an outer surface of the core. The insulator also includes a head formed from the core or the shell, and configured to support the line spaced from the pin.

The invention discloses a preparation method of a polyetherimide / metal organic framework composite medium with high insulating property, which comprises the following steps of: performing ligand exchange reaction on a Znsite with coordination capability in 2-methylimidazole zinc salt (ZIF-8) and a polyetherimide (PEI) monomer 4, 4 '-diaminodiphenyl ether (ODA) through thermal field activation in an imidization process of the polyetherimide (PEI), and performing thermal field activation to obtain the polyetherimide / metal organic framework composite medium with high insulating property. A cross-scale multi-site bonding network is formed, so that close combination of 2-methylimidazole zinc salt (ZIF-8) and a polyetherimide (PEI) matrix is realized on a molecular level; the problems of interface defects, uneven dispersion, weak bonding and the like in a traditional composite medium are effectively solved, the breakdown strength of the composite film is remarkably improved, leakage current and dielectric loss are inhibited, meanwhile, excellent frequency stability and high-temperature insulation performance are kept, and a new thought is provided for development of high-performance polymer insulation materials.

The present invention proposes a thermal wave tomography method and device for polymer insulating materials, which realize fast, non-destructive, high-resolution imaging of the internal structure of the material. The method mainly comprises: first, using the logarithmic frequency modulation method to perform photothermal excitation on the material, concentrating the low-frequency band energy to enhance the deep thermal wave energy. Then, using an infrared thermal imager to collect the infrared thermal image sequence of the thermal diffusion process, and obtain the thermal response signal. Then, by adjusting the stop frequency of the frequency scanning parameter, the frequency difference is introduced, the infrared thermal image sequence is processed, the phase information is calculated, the phase image of a specific frequency is selected as the tomogram, and the depth information is associated. Finally, a super-resolution algorithm is applied to deblur the characteristic thermal map, generate a three-dimensional tomogram, and realize high-resolution imaging. The thermal wave tomography of the present invention has the characteristics of fast, non-destructive, high-resolution, non-contact, large-area, and visualization, and is suitable for the detection of polymer insulating materials.